Silicon-based polyurethane compositions

FIELD: chemistry.

SUBSTANCE: claimed group of compositions provides polyurethane silicon-based compositions. Polyurethane silicon-based composition is obtained by means of reaction of ingredients, containing polyisocyanate, aqueous silicate and alumosilicate to be hydrated, selected from metakaolin, fly ash and their mixtures, polyol and optionally inert filling agent. Method of obtaining said compositions contains stages of mixing alumosilicate to be hydrated with aqueous silicate and reaction of said mixture with polyisocyanate and/or polyisocyanate prepolymer optionally in presence of polyol and/or with introduction of inert filler. Application of said compositions as fireproof light materials with high mechanical loading for seats, wings, interior upholstery, steering wheel, door panel, encasing of luggage compartments and components of engine room, lamellar constructions, heat-insulating panels, bearing loading of roofing coverings and systems of covering, systems of repairing bridges and roads, stationary and mobile cooling units, insulating inflammation of materials, mattresses and upholstery fabric, building panels and systems of outer insulating covering, bearing high load in-situ of packing building elements with double walls.

EFFECT: obtaining fire-resistant light materials with high mechanical loadings.

11 cl, 8 ex

 

Present group of inventions relates to polyurethane compositions based on silicon, the method of their preparation and their application in various fields. More particularly, the present invention relates to polyurethane compositions based on silicon obtained by the reaction of isocyanates, alkali metal silicates and hydroceramic aluminosilicates.

In the production of polyurethane foaming reaction is initiated by a known quantity of water in the polyol component with the polyisocyanate. Allocated carbon monoxide leads to expansion of the polymer. Approaches to improving fire resistance include the addition of a halogenated and/or phosphorus additives, as well as halogenated polyols. However, there are environmental concerns regarding these ingredients.

Two-phase polyurethane-silicon system (FART) known in the art. The ratio in a mixture of organic and inorganic components can determine which forms a homogeneous liquid phase. If emulsion is formed oil-in-water, the organic isocyanate component forms the discontinuous phase and the material properties would be the display of the hardened inorganic compounds.

US-patent 3,607,794 describes a method of producing silica-containing refractory products, which consists mainly of the reaction between water� solution of alkali metal silicate and an organic polyisocyanate in the presence of inert material, selected from the group consisting of granular material, fibrous material, and mixtures thereof and in the absence of pre-formed polymer. The use of amine catalysts, blowing agents and foam stabilizers are recommended in the publication of a US patent.

Inversion of the emulsion produces materials with properties that reflect the continuous organic matrix, which then is more flammable. Isocyanatomethyl polymer hardens by reaction of-NCO with a basic aqueous solution, carbon dioxide is released from the resulting carbamino acid, which is then piped to the aqueous phase and causes hydration of the residues of silica gel. In turn, the released amine unit forms the polyurethane by reaction with isocyanate groups, while further the condensation reaction causes the formation of a network of silicon dioxide. The homogeneous two-phase mixture can be improved by including dispersing agents, wetting agents and emulsifiers.

Mutual penetration of crosslinking of polyisocyanates, modified by ions in combination with hydraulic binders such as quick-setting cement, was a method to improve the mechanical properties of the hybrid liquid glass - polyisocyanate, DE 2310559 A1 describes and claims a porous concrete, obtained by the reaction of a mixture of RA�down alkali metal silicate, the organic polyisocyanate and water-binding additives. These additives are described as hydraulic cements, preferably quick-setting cement, synthetic anhydrides, gypsum, quicklime, and the like. In the examples used were ion-modified polyisocyanates, emulsifiers, catalysts and foaming agents.

US-Patent 4,129,696 describes a method of producing an inorganic-organic plastic composites and the resulting products. Method, in General, involves the reaction of an aqueous solution of alkali metal silicate with liquid organic polyisocyanate that has a viscosity at 25°C of at least about 0.4 PA·s, the said reaction is conducted in the absence of inorganic water-binding fillers. It is recommended to use catalysts, foaming agents and emulsifying agents.

The way to ensure legkosbornogo a BUNCH of hybrid material of the Sol-gel reaction is described by combining liquid-glass-polyisocyanate hybrids, where the mutual penetration of crosslinks produced ion-modified polyisocyanates (GB 1,483,270, GB 1,385,605 and DE 2227147 A1). Lightweight materials were obtained by this method with the use of CFC blowing agents. In the above examples are described elevated temperature�RA processing > 30°C, or slow (over 40 minutes) the growth of foam.

In its broadest aspect the problem underlying the present invention is to mitigate the above drawbacks of the prior art. In particular, the required materials with a sufficiently wide range and good balance of properties, particularly light weight, high mechanical loadings, fire-resistant materials. Avoiding halogenated and/or phosphorus-containing additives, foam stabilizers, catalysts and/or foam-forming agents will have additional advantage.

In particular, in the field of insulation refrigeration equipment that is not flame retardant additives based on halogenated and/or phosphorus-containing additives, which are commonly used as these additives can migrate into the compartment for food storage and to be the subject of Toxicological risks. Insulation of refrigeration, therefore, often consists of combustible materials and carries a high load of ignition. Therefore, in engineering there was a practical need in halogen and/or not containing phosphorus insulating materials with low load ignition and reduced Flammability.

These and other problems that will become apparent to experts in the study of the present description and execution of the contained examples will be solved RVBR�the rotary signs of the independent claims. Dependent claims are directed on preferred embodiments.

The present invention relates to polyurethane compositions based on silicon, which is obtained by reaction of ingredients containing a) a polyisocyanate, (b) aqueous silicate, and (C) gidratiruyuschimi aluminosilicate. Preferably the reaction components further contain (d) a polyol, and/or (e) an inert filler.

The polyisocyanate according to the present invention is an aliphatic isocyanate, an aromatic isocyanate, or a combination of aliphatic/aromatic isocyanate having-NCO functional group predominantly ≥2.

Suitable polyisocyanates include tetramethylene the diisocyanate, hexamethylene the diisocyanate (HMDI), dodecamethyl a diisocyanate, 3-isocyanatomethyl-3,5,5-trimethylcyclohexyl isocyanate, i.e., the isophorone diisocyanate (IPDI), 4,4'-dicyclohexylmethane the diisocyanate (H12MDI), 1,4-cyclohexane the diisocyanate (CHDI), 4,4'-diisocyanatohexane-2,2-propane, p-a phenylene diisocyanate, 2,4 - and 2,6-toluene diisocyanate (TDI) or a mixture thereof, tolidin a diisocyanate, 2,2'-, 2,4'- and 4,4'-a diphenylmethane diisocyanate (MDI) or a mixture thereof, 1,2-naftilan the diisocyanate, xylylene a diisocyanate, tetramethylsilane the diisocyanate (TMTDI), and a mixture thereof.

The polyisocyanates containing heteroatoms in the fragments, linking the isocyanate groups are also su�ceived, i.e. polyisocyanates containing urea groups, urethane groups, biuret groups, allophanate groups, areidentified group, isocyanourate group, imide group, carbodiimide group, uretonimine group and the like.

Especially preferable to use a polymeric polyisocyanates based on diphenylmethanediisocyanate isomers (MDI), the so-called MDI-class and polymeric MDI (PMDI) which have an-NCO functionality of predominantly ≥2. For the purpose of the present invention suitable (polymer) polyisocyanates should have a viscosity of less than 20 PA·s, preferably less than 10 PA·s. the Content of-NCO should be in the range of 10-30 wt.%.

Aqueous silicate according to the present invention is an alkali metal silicate or ammonium silicate, preferably ammonium, lithium, sodium or potassium waterglass, or a combination, which has a (silicon) ratio, as defined by its SiO2:M2O molar ratio of 4.0-0.2, preferably 4.0 to 1.0, where M stands for a monovalent cation, and has a solids content of 10-70 wt.%, preferably 30-55 wt.%, and/or silicon content, calculated as SiO212-32 wt.%, preferably 18-32 wt.%. Sodium or potassium soluble glass is particularly preferred. The viscosity of RA�create glass should be in the range of 0.2-1.0 PA·s; higher viscosity must be reduced by the addition of aqueous solution of the corresponding alkali.

Suitable gidratirutmi aluminosilicates are dehydrated and/or dihydroxypropane forms of hydrated aluminum silicates, such as antigorite, chrysotile, lizardite; kaolinite, illite, sectiona clay, montmorillonite, vermiculite, talc, palygorskite, pyrophyllite, biotite, Muscovite, phlogopite, lepidolite, margarite, glauconite; chlorite; and zeolites. Preferential gidratirutmi aluminosilicates are selected from the group which includes digidrirovanny kaolinite, metakaolin, fly ash, pozzolana, zeolite and a mixture thereof. These materials do not possess cementitious properties. Metakaolin is especially preferred. During dehydration (100-200°C) aluminosilicate materials lose much of their properties to physically bind water. At higher temperatures there is a dehydroxylation, and the interlayer region of these minerals is destroyed. Kaolinite dihydroxypropane between 500-800°C leads to the formation of metakaolinite.

The polyol is a poly-functional alcohol that has-IT the functionality of preferably ≥2. Suitable polyols include, but are not limited to, ethylene glycol, 1,2 - and 1,3-propylene glycol, 2-methyl-1,3-propandiol, 1,2-, 1,3-, 1,4 - and 2,3-butanediol, 1,6-hexandiol, 1,8-OK�andiol, neopentylglycol, cyclohexanedimethanol, cyclohexane-1,4-diol, 1,4-bishydroxycoumarin, 1,5-pentanediol, 3-methyl-1,5-pentanediol, 1,12-dodecanediol, diethylene glycol, triethylene glycol, tetraethylene glycol, pentachlorphenol, dipropyleneglycol, dibutylamino; glycerol, sorbitol, trimethylolpropane, 1,2,4-butanetriol, 1,2,6-hexanetriol, pentaerythritol (all of which are potential raw materials for polyisocyanate prepolymers which have an-NCO functional groups > 2); the polyesters of aliphatic polyols and/or aromatic sources, such as polycaprolactone, alienate, esters terephthalate, polycarbonates; polyester polyols including polyethylene glycol, polypropylene glycol, polytetramethylene. Also suitable are polyhydroxylated natural oils or their derivatives, such as castor oil.

Preferably, at least part of the polyisocyanate and polyol primarily reacted to form the prepolymer of the polyisocyanate. A prepolymer of the polyisocyanate is a polymeric isocyanate, which has an-NCO functional group preferably ≥2. The polyisocyanate prepolymer is preferably synthesized from the above-mentioned MDI-types or PMDI.

As the inert fillers can be used�used the above-mentioned hydrated aluminosilicates, lump kaolin, white clay, barites, calcium carbonate, such as calcite, mica, perlite, pumice, silica, such as quartz, dolomite, wollastonite, aluminum oxide, iron oxides, do not link water zeolites or mixtures thereof. However, any other inert fillers known in the art can be applied.

In accordance with the present invention the weight percent ratios of ingredients can vary within a wide range. The following percentages are applied to the polyisocyanates, water silicates, gidratirutmi aluminosilicates and inert fillers:

10-80 wt.% the polyisocyanate,

2-80 wt.% aqueous silicate,

2-90 wt.% hydrotherapy aluminosilicate,

0-90 wt.% inert filler.

The preferred percentage includes:

20-65 wt.% the polyisocyanate,

5-55 wt.% aqueous silicate,

5-20 wt.% hydrotherapy aluminosilicate,

0-40 wt.% polyol,

0-40 wt.% inert filler.

In particular, embodiments of this invention include exceptionally high strength/high load bearing materials. Other embodiments of this invention include in particular porous materials with light weight. If you have used large quantities of aqueous silicates all the carbon dioxide obtained from the reaction of the polyisocyanate with water, usually used in with�silicate components for dewatering silicon sludge; the reaction mixture is not thereby to foam. On the other hand, when the small amount of aqueous silicates are obtained foam with light weight.

The compositions of the present invention are fireproof. Without binding to any particular theory, it is assumed that (re)hydrotherapy aluminosilicate component in contact with fire releases water, which helps to extinguish the flame. Thus, a clear advantage of the present invention is that the fire retardant properties can be achieved without the use of halogenated phosphorus-containing additives of the existing level of technology.

Despite the fact that in the composition of the present invention can be used conventionally used additives such as stabilizing agents, wetting agents, dispersing agents, catalysts and/or blowing agents, it is preferable to avoid these additives.

Silicon-based polyurethane composition of the present invention are mainly prepared by the following stepwise method of mixing, which includes the steps of mixing Gidrodinamika aluminosilicate with an aqueous silicate and reacting this mixture with the polyisocyanate and/or polyisocyanate prepolymer, optionally in the presence of a polyol and/elice the introduction of an inert filler. The materials are then allowed to ripen inside suitable auxiliary containers. The reaction typically is conducted at room temperature, and sufficient heat is generated in-situ curing of the contents of the reaction. A method of manufacturing a composition according to the present invention preferably further comprises a gas with a low pressure release, formed in the reaction of the polyisocyanate and/or polyisocyanate prepolymer with water, that is released by pressure controlled foaming.

The use of silicon-based polyurethane compositions of the present invention relates to the field of aviation; automotive assemblies, examples include, but are not limited to, seats, wings, interior upholstery, steering wheels, door panels, sheathing baggage compartments and components of the engine room; construction, examples include, but are not limited to, layered structure, the insulating panel carrying the load of roofing and flooring systems, system repair of bridges and roads; consumer products, examples include, but are not limited to, stationary and mobile cooling units; fire protection; examples include, but are not limited to, isolating the ignition of materials; furniture components, examples include, but are not limited to, mattresses and upholstery �Kan; and insulating materials, examples include, but are not limited to, construction panels and external insulation coating; shipbuilding and/or construction of windmills, examples include, but are not limited to, high load bearing in-situ gasket construction elements with double walls.

The present invention will be illustrated with reference to the following examples.

Examples

Testing of materials the apparatus was configured in accordance with DIN 196-1. Lupranat® MI (4,4'-of the diphenylmethane diisocyanate) was obtained from Elastogran GmbH, Desmophen® 3600 z (propylene glycol) was obtained from Bayer AG, Argical 1000 M (metakaolin) was obtained from AGS Mineraux, quartz sand (0.06 mm - 0.3 mm) was obtained from Carlo Bernasconi AG, potassium silicate K-45 M (silicon module 1.0, the solids content 40.5 wt.%) and Betol To 42 Tons (silicon module 2.9, the solids content of 40.0 wt.%) were received from Woellner GmbH, sodium liquid glass Inocot Na-4830 (silicon module 2.9, the solids content 44.9 wt.%) and potassium liquid glass Inobond K-4250 (silicon module 3.2, the solids content 41.3 wt.%) were obtained from van Baerle GmbH.

The synthesis of the Prepolymer

The prepolymer 1 was obtained by reacting 1000 g of commercial grade 4,4'-diphenylmethane diisocyanate (Lupranat® Ml), 863 grams of commercial grade propylene glycol (Desmophen® 3600 z) that HE has knowledge�Linux 56.0 mg/g KOH. The resulting prepolymer 1 has an-NCO content of 15.6 wt.% and a viscosity at 24°C 709 MPa·s.

Example 1

A-Component: Metakaolin, Argical 1000 M24.0 g
Quartz sand55.2 g
Potassium liquid glass, 45 M28.0 g
B-Component: Prepolymer 1133.91 g
P-Component: Sodium silicate, Inocot Na-483086.88 g

Components A and C were mixed for 30 seconds at 1000 rpm. Component b was added and mixed for 60 seconds at 600 rpm. Density after 7 days of storage at room temperature in Styropor® was 1.380 g/ml. the Material has passed the B2 test on ignition in accordance with DIN 4102. Maximum flame height of 20 mm was recorded after 20 seconds.

Example 2

A-Component: Metakaolin, Argical 1000 M4.19 g
Quartz sand4.41 g
Potassium liquid glass, Inobond K-4250B-Component: Prepolymer 1209.24 g
P-Component: Potassium water glass, Inobond K-4250132.19 g

Components A and C were mixed at 900 rpm for 60 seconds. Component b was added and mixed for 60 seconds at 600 rpm. The material was filled into a mold, and after 3 days the values of tensile strength, resistance to compression and bending 1.7 N/mm2, 9.4 N/mm and 63.3 N/mm2respectively were registered. During testing 4·4·4 cm3the unit demonstrated an unusual reaction to compression, since it was suppressed in the range of 21% from its original height under maximum pressure of 100 tons, but it was again expanded to more than 80% of its original height after pressure relief. During the measurement of tensile strength in bending 4·4·16 cm3the shape was deformed by 46% and as soon as the pressure was released and the material returned to its original shape. Density after 7 days of storage at room temperature in Styropor® was 1.036 g/ml.

Example 3

A-Component: Metakaolin, Argical 1000 M16.78 g
Quartz sand 38.59 g
Potassium liquid glass, Inobond K-425019.63 g
B-Component: Prepolymer 1167.39 g
P-Component: Potassium water glass, Inobond K-4250105.75 g

Components A and C were mixed at 800 rpm for 60 seconds. Component b was added and mixed for 60 seconds at 600 rpm. The material is poured into the form and allowed to set. Density after 7 days of storage at room temperature in Styropor® was 0.875 g/ml.

Example 4

A-Component: Metakaolin, Argical 1000 M13.43 g
Quartz sand30.87 g
Potassium liquid glass, Inobond K-425015.70 g
B-Component: Prepolymer 1133.92 g
P-Component: Potassium water glass, Inobond K-4250169.20 g

Components A and C were mixed at 800 rpm for 60 seconds. Component b was added and mixed for 60 seconds at 600 rpm minute. The material was filled into a mold, and after 3 days the values of tensile strength, resistance to compression and Flexural strength 1.5 N/mm2, 5.2 N/mm and 62.5 N/mm2respectively were registered. During testing 4·4·4 cm3the unit demonstrated an unusual reaction to compression, since it was suppressed in the range of up to 23% of its original height under maximum pressure of 100 tons, but it was again expanded to more than 80% of its original height after pressure relief. During the measurement of tensile strength in bending 4·4·16 cm3the shape was deformed by 48%, and as soon as the pressure was released, the material returned to its original shape. Density after 7 days of storage at room temperature in Styropor® was 0.987 g/ml. the Material has passed the B2 test on ignition in accordance with DIN 4102. Maximum flame height of 30 mm was recorded after 20 seconds.

Example 5

A-Component: Metakaolin, Argical 1000 M46.98 g
Quartz sand108.05 g
Potassium liquid glass, 45 M54.97 g
B-Component: Prepolymer 1156.23 g

�ingredienti component A were mixed at 1000 rpm for 60 seconds. Component b was added and mixed for 60 seconds at 600 rpm. The material was filled into a mold, and after 3 days the compressive strength was measured. The maximum values of the compressive strength of 3.2 N/mm2with 48% stretching was registered. Density after 7 days of storage at room temperature in Styropor® was 0.710 g/ml.

Example 6

A-Component: Metakaolin, Argical 1000 M44.74 g
Quartz sand102.91 g
Potassium liquid glass, Betol K42T52.35 g
B-Component: Prepolymer 1111.60 g

The ingredients of component A were mixed at 1000 rpm for 60 seconds, added to component b and mixed for an additional 60 seconds at 600 rpm. The material was filled into a mold, and after 3 days the values of tensile strength, resistance to compression and bending 1.7 N/mm2, 6.6 N/mm2and 62.5 N/mm2respectively were registered.

During testing 4·4·4 cm3the unit demonstrated an unusual reaction to compression, since it was suppressed in the range of up to 29% from its original height by� maximum pressure of 100 tons, but he was again expanded to more than 80% of its original height after pressure relief. During the measurement of tensile strength in bending 4·4·16 cm3the sample was deformed by 20%. Density after 7 days of storage at room temperature in Styropor® was 0.969 g/ml. the Material has passed the B2 test on ignition in accordance with DIN 4102. Maximum flame height of 20 mm was recorded after 20 seconds.

Example 7

A-Component: Metakaolin, Argical 1000 M40.27 g
Quartz sand92.62 g
Potassium liquid glass, Betol K42T47.11 g
In Component; the Prepolymer to 1133.92 g

The ingredients of component A were mixed at 1000 rpm for 60 seconds, added to component b and mixed for an additional 60 seconds at 600 rpm. The material was filled into a mold, and after 3 days the values of tensile strength, resistance to compression and bending 1.7 N/mm2, 8.1 N/mm2and 66.5 N/mm2respectively were registered.

During testing 4·4·4 cm3the unit demonstrated an unusual reaction to the compression�Kolka he was suppressed to within 25% of its original height under maximum pressure of 100 tons, but he was again expanded to more than 80% of its original height after pressure relief. During the measurement of tensile strength in bending 4·4·16 cm3the sample was deformed by 25%, and as soon as the pressure was released, the material returned to its original shape. Density after 7 days of storage at room temperature in Styropor® was 0.842 g/ml.

Example 8

A-Component: Metakaolin, Argical 1000 M35.85 g
Potassium liquid glass, 45 M11.30 g
B-Component: Prepolymer 1is at 45.40 g

The ingredients of component A are mixed at 2000 rpm for 60 seconds, component b was added and mixed for 30 seconds at 1000 rpm, and placed in 500 cm3the container for providing a controlled pressure relief. 10 seconds after sealing of the container was marked by the growth of the foam, and 20 seconds after the controlled pressure release from the container for 10 seconds was provided a stable porous material. Density after 7 days of storage at room temperature in Styropor® was 0.294 g/ml.

1. Polyurea composition on a silicon basis, yielding�may by reaction of ingredients contains
(a) a polyisocyanate,
(b) aqueous silicate and
c) hydrotherapy alumosilicate, which is metakaolin.

2. A composition according to claim 1, wherein the reaction ingredients additionally contain
(d) a polyol, and/or
(e) an inert filler.

3. A composition according to claim 2, where the reaction ingredients contain
20-65 wt.% the polyisocyanate,
5-55 wt.% aqueous silicate,
2-20 wt.% Gidrodinamika aluminosilicate,
0-40 wt.% polyol,
0-40 wt.% inert filler.

4. A composition according to claim 1 in which the polyisocyanate is an aliphatic isocyanate, an aromatic isocyanate or a mixture aliphatische/aromatic isocyanate, which has an-NCO functional group ≥2.

5. A composition according to claim 1 in which the aqueous silicate is an alkali metal silicate or ammonium silicate, preferably ammonium, lithium, sodium or potassium liquid glass, which has a module, as defined by SiO2:M2O molar ratio of 4.0-0.2, preferably 4.0 to 1.0, where M stands for a monovalent cation, and has the solids content is 10-70 wt.%, preferably 30-55 wt.%.

6. A composition according to claim 2 in which the polyol is a poly-functional alcohol that has an-OH functionality ≥2.

7. A composition according to claim 2, in which at least part of the polyisocyanate and polyol will be in first�u turn react to form the prepolymer of the polyisocyanate, which has an-NCO functional group ≥2.

8. A composition according to claim 7, which is not halogenated and/or phosphorus-containing additives are incorporated as the reaction ingredients.

9. A composition according to claim 7, in which not foam stabilizing agents, catalysts and/or foaming agents are contained as the reaction ingredients.

10. A method of producing the composition as defined in any preceding paragraph, which includes the steps of mixing Gidrodinamika of aluminosilicate, which is metakaolin, with the aqueous silicate and reacting this mixture with the polyisocyanate and/or polyisocyanate prepolymer, optionally in the presence of a polyol and/or with the introduction of the inert filler.

11. The use of the composition as defined in any one of claims.1-9 as fire-resistant lightweight materials with high mechanical loads for the seats, fenders, interior upholstery, steering wheel, door panels, sheathing baggage compartments and components of the engine room, the laminates, insulated panels that carry the load of roofing and flooring systems, systems, repair of bridges and roads, stationary and mobile cooling units, ignition of insulating materials, mattresses and upholstery fabrics, building panels and systems external insulation coating, high load bearing in-situ �of abuki building elements with double walls.



 

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2 tbl

FIELD: construction.

SUBSTANCE: invention relates to construction industry, to the method to produce glass haydite and porous ceramics. In the method to produce glass haydite and porous ceramics including preliminary grinding of silicon-containing mixture of fossil meal and silica clay and its subsequent mixing with an alkaline component - caustic soda, granulation of the produced mixture, swelling and sintering in a rotary furnace, the specified silicon-containing mixture is previously exposed to grinding to fraction of 3-5 mm with subsequent drying at temperature of 600°C to moisture of 10%, repeated grinding to produce powder of fraction of 0.315 mm, then the produced powder is serially exposed to granulation and chemicalisation in a turbulent granulating machine, where the power is supplied in a dosed manner, as well as caustic soda solution, with production of granules of fraction from 1.5 to 2.5 mm, then the produced granules are exposed to repeated granulation and chemicalisation in a plate granulating machine, where the produced granules are supplied in a dosed manner, the specified powder and caustic soda solution, with production of granules of final fraction from 5 to 7 mm with moisture of 45% by mass, which are exposed to drying, swelling and sintering to achievement of swelling coefficient from 2.2 to 5.5 depending on the specified formula, in a rotary hearth furnace with temperature of 740-760°C for 15-20 minutes, or thermal treatment of granules is carried out at an electric conveyor in process of their delivery to a consumer.

EFFECT: production of semi-dry granules of high strength with low water content in a solution for chemicalisation of components, combination of processes of chemicalisation and granulation.

FIELD: chemistry.

SUBSTANCE: claimed invention relates to artificial marble, which has translucent amorphous texture. Described is artificial marble, which has translucent amorphous texture, which contains matrix and texture component, where said texture component has specific density from approximately 1.6 to approximately 2.0 and contains solidified resin composition, which forms textures (A), which contains binding agent and acrylic polymerisable monomer, where said binding agent contains halogenated urethane acrylate, halogenated epoxy acrylate or their combination, where mentioned resin composition, which forms texture component (A), contains from approximately 50 to approximately 90 weight parts of binding agent and from approximately 10 to approximately 50 weight parts of acrylic polymerisable monomer basing on the total weight of resin composition, which forms texture component (A), where said resin composition, which forms texture component (A), further contains inorganic filler in quantity 30 weight parts or less basing on 100 weight parts of mixture of binding agent and acrylic polymerisable monomer to ensure good translucence, where said matrix is formed from suspension, which represents mixture of dissolved polyacrylate and acryl monomer. Also described is method of obtaining claimed artificial marble, in which polymerisable acryl monomer and inorganic filler are mixed with binding agent, which contains halogenated urethane acrylate, halogenated epoxy acrylate or their combination, with obtaining resin composition, which forms texture component (A); polyacrylate is dissolved in acryl monomer with obtaining suspension, which forms matrix (B); texture-forming resin composition (A), and matrix-forming suspension (B), is non-continuously supplied into mould and resin composition, which forms texture component (A), and matrix-forming suspension (B) are solidified.

EFFECT: obtaining artificial marble, which has translucent amorphous texture, good smoothness without emergence of concavity effect.

7 cl, 5 dwg, 1 tbl, 3 ex

FIELD: chemistry.

SUBSTANCE: invention relates to construction and specifically to a method of making paving for streets, roads and other surfaces of transportation structures. The method of making paving for streets, roads and other surfaces of transportation structures, wherein a mixture is obtained, which contains a mineral material and a polyurethane reaction mixture, and optionally other additives, said mixture is applied onto a base material, pressed using pressure of at least 5 N/cm2 and hardened, wherein treatment is carried out essentially without using solvents, and the polyurethane reaction mixture can be obtained by mixing: (a) isocyanates with (b) compounds which contain at least two hydrogen atoms which are active with respect to isocyanates, which contain a hydroxy-functional compound having hydrophobic groups, and optionally (c) chain elongation agents and/or polymer cross-linking agents, (d) catalysts and (e) common additives. Paving made using said method is also described.

EFFECT: obtaining paving which can be made and applied without polluting the environment, having high load bearing capacity and is not sensitive to ageing of the binding material.

13 cl, 1 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to marble chips, method of making said chips and artificial marble made from said chips. The marble chips are made from hardening a polymer composition which contains an acrylic monomer which forms cross bonds, and binding substance selected from a group consisting of halogenated urethane acrylate, halogenated epoxy acrylate and a mixture of said compounds. The method of obtaining the marble chips involves preparation of a polymer composition by adding an acrylic monomer, which forms cross bonds, to the binding substance, hardening the polymer composition and crushing the hardened article.

EFFECT: artificial marble containing marble chips disclosed by the invention may have appearance and texture similar to that of synthetic stone, as well as good thermal processability and mouldability, which are advantages of acrylic artificial marble.

21 cl, 1 tbl, 4 dwg, 10 ex

FIELD: construction materials industry; production of the plastic rods for reinforcement the concrete construction products.

SUBSTANCE: the invention is pertaining to the field of production of the construction materials, in particular, to manufacture of the plastic rods made out of the mineral fibers impregnated with the binding agent, which may be used as the reinforcement bars of the construction designation for reinforcement of the three-layered wall constructions, the monolithic concrete and precast structures, in the structural components of the buildings in the form of the separate rods, for reinforcement of the buildings and structures foundations grounds, etc. The technical result of the invention is the increased fire-resistance and heat resistance of the rod used for reinforcement of the concrete, simplification of the process of its manufacture at conservation of the rather high strength properties with the increased alkali resistance, reduction of the power inputs used for the binding agent due to the significant decrease of the temperature of the thermal treatment. The problem is being solved due to the fact that the rod made out of the fibrous roving impregnated with the binding agent. In capacity of the binding agent it has the hybrid binding agent containing polyisocyanate adhesive and sodium liquid glass with the modulus of 2-5. At that the curing is exercised by the step-by-step temperature mode: 1 stage: 65-80°C, 2 stage: 90-100°C, by pulling the fibrous roving impregnated with the binding agent through the chamber of the polymerization. At that the ratio of the fibrous roving and the binding agent is 65-85:15-35 mass % accordingly.

EFFECT: the invention ensures the increased fire-resistance and heat resistance of the rod used for reinforcement of the concrete, simplification of the process of the rod manufacture at conservation of the rather high strength properties with the increased alkali resistance; reduction of the power inputs used for the binding agent due to the significant decrease of the temperature of the thermal treatment.

2 tbl

FIELD: manufacture of building materials on base of polymer compositions; structural material for heat-insulated plates of poly-functional purpose, wall panels for example.

SUBSTANCE: proposed heat-insulating composition contains 70-90 mass-% of polyurethane and 10-30 mass-% of filler; used as filler are sol micro-spheres of combustion products of solid slag disposal with size of particles of 1-10 mcm, no more than 20 mass-%, with size of particles of 30-40 mcm, no less than 65 mass-% and with size of particles of 80-100 mcm, no more than 15 mass-%. Composition has density of 51 kg/m3, compressive strength of 1.36 Mpa and heat conductivity coefficient of 0.124 W/m*K.

EFFECT: enhanced efficiency.

1 tbl, 9 ex

The invention relates to heat insulating and water - proof material that protects, for example, steel pipes

The invention relates to polymer-mineral compositions, mainly for construction purposes, used, for example, during installation and repair of building structures and components on the basis of cement, concrete and other silicate materials, such as putties, for warmth and waterproofing of buildings, tanks and their individual parts, pipelines, etc

The invention relates to isocyanate - and polylateral reactive resin, and also to its use as a binder for granular material intended for the manufacture of molded products with open pores

FIELD: technological processes.

SUBSTANCE: invention relates to piping, namely, to materials applied onto the outer surface of pipes as a protective weighting coating. In the method to manufacture a protective weighting concrete coating of a pipeline, including mixing of cement, filler, plasticising additive and water, injection of the produced mix into the annular space created by the outer surface of the pipeline and a leave-in-place form installed on it with a gap, hardening of the produced coating, portland cement is supplied for mixing with account of its content in the mix from 8.8 wt % to 20.0 wt %, water is introduced in terms of water to cement ratio from 0.31 to 0.63, plasticising additive supplied for mixing is a plasticising agent and a defoaming agent in the amount of 1.0 kg/m3 to 3.0 kg/m3, the filler supplied for mixing with grain size not exceeding 10 mm is selected from barite or iron-containing ore, or gabbrodiabase, or granite in the mixture or separately, at the same time components are mixed to produce a mix having a flow index measured by flow equal to 55 - 75 cm, and the index of air content from 1% to 4% of the volume. The invention is developed in invention claims.

EFFECT: provision of density of a protective concrete material within 2600 - 3400 kg/m3.

3 cl, 2 tbl

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