Crude mixture for producing heat-insulating materials

FIELD: chemistry.

SUBSTANCE: invention relates to the industry of construction materials and specifically to compositions of mixtures for making heat-insulating articles used in building walls, floors and partition walls. The crude mixture for producing heat-insulating materials contains the following in wt %: wood aggregate 69.0 - 78.0, hydrolised lignin 1.0 - 2.0, ground thermoplastic wastes 20.0 - 30.0.

EFFECT: reduced toxicity of heat-insulating articles.

1 tbl

 

The invention relates to the construction materials industry, namely the composition of the raw material mixtures for the manufacture of insulation products used in the construction of walls, floors, partitions.

Famous raw mix for the production of insulation products containing, wt.%: wood filler to 58.9-77,2; phenol-formaldehyde resin 12,7-23,6; lignin 2,9-9,1; nephratonia waste weaving 7,2-13,2 [1].

The objective of the invention is to reduce the toxicity of insulation products.

Technical result is achieved by the fact that the raw mix for the production of insulation products, including wood filler, binder, lignin, as a binder contains shredded waste thermoplastic in the following ratio, wt.%: wood filler 69,0-78,0; lignin 1,0-2,0; shredded waste thermoplastic 20,0-30,0.

The table below shows the composition of the raw mix.

ComponentsComposition, wt.%
123
Wood filler78,0 73,569,0
Lignin2,01,51,0
Shredded waste
- polyethylene20,0--
- polypropylene-25,0-
- of polystyrene--30,0

Composition No. 1, 3: quality wood filler use chips.

Composition No. 2: as a wood filler use sawdust.

The following is an example for insulating products offered raw mixture.

The components are metered in the desired quantities.

Prepare wood filler (shredded, obtained from waste treatment pines). The aggregate is crushed to particle size of not more than 5 mm thermoplastic Waste plastics (polystyrene) is crushed to particle size of not more than 3 mm Wood filler, waste thermoplastic plastic, hydralisk the th lignin is mixed. The resulting mass is heated to a temperature of 100-105C and formed into the desired product configuration, which then utverjdayut to room temperature.

Products offered raw mixture durable, water-resistant, do not contain phenol-formaldehyde resin. Products are environmentally friendly.

Sources of information

1. USSR author's certificate No. 1131856, 1984.

Raw mix for the production of insulation materials, including wood filler, binder, lignin, characterized in that the binder contains shredded waste thermoplastic in the following ratio, wt.%:

wood filler69,0-78,0
lignin1,0-2,0
shredded waste thermoplastic plastic20,0-30,0



 

Same patents:

FIELD: process engineering.

SUBSTANCE: invention relates to woodworking and may be used in production of fireproof particle boards. Proposed composition comprises wood particles, amidophosphate as fire-retardant additive, binder including resin and formaldehyde solution as additive. Resin binder contains melamine-phenolic resin and, additionally, latent catalyst while outer layers binder contains melamine-phenolic resin, latent catalyst and surfactant.

EFFECT: high-efficiency composition, higher quality of particle boards, better manufacturability.

2 cl, 3 tbl, 1 ex

FIELD: chemistry.

SUBSTANCE: invention relates to a biodegradable thermoplastic composition. The composition contains polyethylene, wood flour and functional additives, such as concrete stone, polyvinyl alcohol, a compatibilising agent and nanoparticles. The compatibilising agent is primarily an ethylene and vinyl acetate copolymer and the nanoparticles are chemically deposited iron hydroxide or calcium sulphate nanoparticles.

EFFECT: use of cheap and readily available wood mechanical processing wastes, with high concentration thereof, as biodegradable material in the disclosed composition allows for normal use of articles in ordinary conditions, as well as the given rate of biodegradation in disposal conditions after use; wherein polyethylene in the composition can be used in form of manufacturing and/or household wastes.

3 cl, 1 tbl

FIELD: chemistry.

SUBSTANCE: rigid polyvinyl chloride (PVC) based wood-polymer composition contains a complex stabiliser, an impact strength modifier, wood flour and silicon sol as a binding agent, with the following ratio of components, pts.wt: polyvinyl chloride 100, impact strength modifier 4.8-9, complex heat stabiliser 4.5-7, wood flour 10-160, silicon sol 2-4.

EFFECT: obtaining highly filled rigid PVC compositions based on dispersed wood flour while preserving processing and operational characteristics.

1 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to wax dispersions in form of nanoparticles, used for hydrophobisation of lignocellulose- and/or cellulose-based materials. The wax dispersion contains water as a continuous phase, an emulsifying agent and wax which forms the dispersed phase. More than 85 wt % of the wax is made up of one or more long-chain hydrocarbons containing more than 20 carbon atoms on average, and the wax has hardening temperature ranging from higher than 40 to 150C. The dispersed wax in form of solid particles has mean particle diameter from 10 to less than 500 nm. The wax dispersion is obtained by heating a mixture containing water, an emulsifying agent and wax to temperature higher than the melting point of the wax, and the molten wax is emulsified using a dispersant and then cooling to temperature lower than the hardening temperature of the dispersed wax phase. Hydrophobisation of materials is carried out by bringing said materials into contact with said wax dispersion and then pressing the material.

EFFECT: obtained wax dispersions contain a large weight ratio of a dispersed wax phase, are stable during storage and are resistant to shearing stress, provide a high hydrophobic effect compared to standard wax dispersions with the same content of wax.

23 cl, 3 tbl, 6 ex

FIELD: chemistry.

SUBSTANCE: wood materials (i) contain polyamine as binder or binder different from polyamine. The wood materials additionally have polyamine inside or on their outer layer and the polyamine has average molecular weight of not less than 500 g/mol and has at least 6 primary or secondary amino groups per molecule of polyamine.

EFFECT: reduction of formaldehyde in ambient air.

6 cl, 1 tbl, 5 ex

FIELD: woodworking industry.

SUBSTANCE: formula of chip and glue composition for an internal layer in production of woodchip boards includes up to 40% of chips from wastes of rotting blanks with application of a binder based on a low-molar urea formaldehyde resin.

EFFECT: reduced material intensity of woodchip boards production, energy intensity of pressing process, increased efficiency of pressing equipment and reduced toxicity of produced boards.

3 tbl, 3 ex

FIELD: chemistry.

SUBSTANCE: described is a composition for obtaining a binding agent for soaking cellulose fibres. The composition contains polyolefin resin which reacts with 1.6-4.0% maleic anhydride. The composition has less than 1500 ppm free maleic anhydride. The resin has melt flow index at 190C and 2.16 kg ranging from approximately 0.1 to 500 g/10 min. The composition has yellowing index of 20-70. The polyolefin is polyethylene. Described also is a cellulose composite containing 10-90% cellulose fibre; a first polyolefin resin having melt flow index from 0.1 to 100 g/10 min; 0.1-10 wt % composition for obtaining the binding agent. The maleic anhydride is grafted on the polyethylene.

EFFECT: high binding efficiency of the binder.

12 cl, 8 tbl, 20 ex

FIELD: process engineering.

SUBSTANCE: invention relates to pulp of organic stuff particles for production of ligno-carbohydrate plastic. Said pulp comprises minced particles of conifer needle, coniferous branch bast peeling, timber and wastes of Siberian pine cones in various versions. Said pulp features improved extraction of active natural substances from said components to produced binder.

EFFECT: pulp of organic stuff particles for production of ligno-carbohydrate plastic at reduced temperature of thermal compaction.

11 cl, 11 tbl

FIELD: chemistry.

SUBSTANCE: polyvinyl chloride-based wood-polymer composition for profiled-trim moulding articles contains polyvinyl chloride, wood flour, a complex stabiliser, an acrylic modifier, polyethylene wax and a metal-containing lubricant. The metal-containing lubricant used in the composition is obtained by reacting higher monocarboxylic acids with glycerin at 130-230C at molar ratio 1:(1-2) in the presence of oxides of divalent metals Ca, Zn, Mg or their two-component mixtures in weight ratio 0.25-1.0:0.5-1.0 in amount of 0.5-2.0 wt % of the overall reaction mass, where the higher monocarboxylic acids used are VIK, oleic and stearic acid. The composition also uses polyethylene wax with melting point not higher than 100C. The complex stabiliser used is selected from: BAEROPAN R 9003 (produced by Baerlocher GmbH, Germany) or Naftosafe PEK 922 B (produced by Chemson, Austria). The acrylic modifier used is impact-resistant modifiers selected from: MB-87, DURASTRENGTH D320, DURASTRENGTH D300S (produced by Arkema, France), Metablen P-5500S (produced by Dangdong), Paraloid BTA 736H-S OS (produced by Rohm & Haac), Kane ACE F50 (produced by Kalek), Lariks on TU 2216-235-05757533-2000.

EFFECT: high quality of profiled-trim moulding articles, which is expressed by improved operational and technological parameters, specifically melt flow index, thermal stability, impact viscosity, low water absorption and environmental safety of the composition.

2 cl, 1 tbl

FIELD: chemistry.

SUBSTANCE: product contains the following in wt %: 1-50 modified hybrid resin based on natural fatty acids and 99-50 natural material selected from cellulose, wood, wood fibre, flax, hemp, starch and another natural fibre or combinations thereof. The product can contain 20-80 wt % thermoplastic, 30-70 wt % binder or natural adhesive. The hybrid resin is obtained via water-emulsion polymerisation of an acrylate monomer - butylacrylate, methyl methacrylate or butylacrylate, on an alkyde resin based on fatty acids in the presence of a radical initiator at 30-100C. Fatty acids are selected from tall oil, suberin fatty acids, cutin fatty acids, vegetable oils and mixtures thereof. The composite product is obtained by mixing acrylate hybrid and natural material or combination thereof. Further, the product is moulded and hardened under heat at 120-200C until a composite product of the given type is obtained.

EFFECT: invention enables to obtain composite plates with improved properties, good biodegradability and low toxicity; such properties of the plates are achieved by using modified hybrid resins in form of a stable aqueous emulsion as binding materials and compatibilisers.

22 cl, 1 tbl, 1 dwg, 9 ex

FIELD: chemistry.

SUBSTANCE: invention relates to a composition for concrete protective coating and can be used in protecting freshly laid concrete of roads and aerodromes from dehydration, as well as in hydraulic engineering and monolithic building construction. The composition for concrete protective coating contains latex, a paraffin component, C13 fatty acid, an alkaline component, a surfactant - OP-7 or OP-10, a thickener and water. The alkaline component is selected from triethanol amine and the paraffin component is paraffin wax, with the following ratio of components, wt %: latex 2-25, paraffin wax 3-25, C13 fatty acid 0.5-3,0, triethanol amine 0.3-5.0, said surfactant 0.1-0.5, thickener 0.1-0.5, water - the balance.

EFFECT: preparation of a composition with optimum viscosity which does not change during prolonged storage.

2 cl, 1 tbl

FIELD: chemistry.

SUBSTANCE: halogenated epoxy polymer reacts with methacrylic acid. Binder based on a halogenated epoxy acrylate polymer is diluted with a reactive monomer.

EFFECT: disclosed marble chips have abradability and hardness similar to corresponding characteristics of a matrix and have good matrix compatibility.

16 cl, 2 tbl, 3 ex

FIELD: chemistry.

SUBSTANCE: invention relates to composition of a nanostructuring binder for composite construction materials based on liquid glass and nanostructuring additives used for making acid-resistant concrete, putty and other compositions. The nanostructuring binder for composite construction materials contains liquid glass, tetrafurfuryl ester of orthosilicic acid and a hardener. A portion of the liquid glass is replace with organic alkaline liquid glass containing an organic cation 1,8-diazabicycloundecene-7 or 1,5-diazabicyclononene-5-2-4.

EFFECT: use of the nanostructuring binder enables to increase acid resistance, water resistance and strength of construction materials and widens their field of use.

2 cl, 4 tbl

FIELD: civil engineering.

SUBSTANCE: particular invention relates to structures of interior walls of building with application of its coating by compound and connective material. There are described structures of interior walls of building (versions), differs by that contains film coating of components of dry wall, including elements of dry wall, containing at least one layer of film coating on element of dry wall, herewith compound of film coating includes water, coupling medium, filler, including at least about 60% by weight CaCO3, and non-cellulose thickener, herewith specified non-cellulose thickener contains polyacrylate; and at least one connective material, connecting coating by film elements of dry wall, forming in essence flat outside surface. Also it is proposed method of creation of interior walls, compound of coating for dry walls and coated by film coating element of dry wall.

EFFECT: effectiveness increase of installation of dry walls and improvement of its texture, and also increasing of its qualitative characteristics.

56 cl, 2 tbl, 3 ex

FIELD: chemistry.

SUBSTANCE: ready-for-use composition of drying-type binding mix includes binding substance, thickening system, filler, water and biocide, with thickening system containing non-linked sodium carboxymethylcellulose (CMC) with bottom limit of degree of substitution (DS) of 0.76 and bottom limit of polymerisation degree (DP) of 1000 at amount of 0.01 to 0.6 wt % of the total composition weight. CMC with degree of carboxymethyl substitution (DCMS) over or equal to 0.76, optionally together with non-ionogenic thickening agent, or CMC with DCMS under 0.75 is used as modifier of rheological properties and partial clay substitute in binding compositions.

EFFECT: elimination of most negative properties of clay in binding substance.

38 cl, 3 tbl

Putty // 2327662

FIELD: construction.

SUBSTANCE: said utility invention relates to construction materials and may be used for levelling concrete plastered surfaces intended for painting with polystyrene paints. The putty contains the following components, % weight: ground chalk 58-62, 10% polystyrene lacquer 38-41.6, clay 0.07-0.12, surfactant 0.094-0.116.

EFFECT: increased adhesion strength and plastic properties.

2 tbl

FIELD: manufacture of building materials; raw mixes for manufacture of heat-insulating articles used for walls, floors and partitions.

SUBSTANCE: proposed raw mix for manufacture of heat-insulating articles contains wood filler, phenol formaldehyde resin, hydrolysis lignin and powder-like material obtained by grinding rejected compact disks to specific surface of 2000-2500 cm3/g at definite ratio of components.

EFFECT: enhanced strength of articles made from this mix.

1 tbl

FIELD: building material industry, particularly plastic material production and for heat-insulation and structural material manufacturing.

SUBSTANCE: mix comprises filler, grinded thermoplastic waste material, namely polyethylene terephthalate and polyethylene waste, as well as mineral component. The filler is burnt quartz sand. The mineral component is chalk and fine silicon oxide. All above components are taken in the following amounts (% by weight): burnt quartz sand - 30-40, polyethylene terephthalate waste - 60-50, polyethylene waste - 5.0-10, chalk - 2.5-3.5, fine silicon oxide - 2.5-2.0. Thermoplastic waste material used for mix production is preliminarily grinded along with thermomechanical treatment thereof in the presence of chalk and then is atomized in the presence of fine silicon oxide.

EFFECT: increased flexural strength and impact elasticity, as well as decreased water absorption capacity of article formed of above mix.

1 tbl, 3 ex

FIELD: building materials.

SUBSTANCE: composition for preparing heat-insulating materials comprises unfibered waste in textile and weaving manufacture as a fibrous component and/or waste in manufacture of nonweaven materials with unoriented fiber structure characterizing by average length 18-60 mm and average diameter 6-12 mm. As a binding agent the composition comprises 3-9% solutions of polystyrene foam and/or polystyrene waste in organic solvents, and ammonium bromide as an antipyrene in the following content of components, wt.-%: indicated binding agent, 14.5-28.3; indicated fibrous component, 66.0-82.1; ammonium bromide, 3.4-5.7. Heat-insulating material prepared on the proposed composition base shows the following properties: average density is 150-200 kg/m3, heat conductivity is 0.022-0.025 Wt/(m x K), bending strength limit is 0.2-0.4 MPa, rupture strength limit is 0.24-0.36 MPa, strength at 10% of deformation is 0.020-0.054 MPa. The composition shows biological stability and difficulty combustibility. Invention provides decreasing the coefficient of heat conductivity, cost of material and retaining its physical-mechanical indices. Invention can be used in preparing heat-insulating materials used in building industrial and municipal buildings and in rural building also.

EFFECT: improved and valuable properties of composition.

2 tbl

FIELD: building, particularly forming coating on sport ground and similar structures.

SUBSTANCE: method involves securing vertical rods in load-bearing layer, arranging zigzag heating wires connected with power source on load-bearing layer; connecting heating wires to vertical rods and applying coating material on load-bearing layer. Coating material is concrete of the following composition (% by weight): low-molecular oligodiene - 8-11; sulfur - 3-6.5; thiuram - 0.3-0.7; zinc oxide - 1.5 - 5.0; calcium oxide - 0.3-0.6; ash from heat power plant - 7-10; remainder - quartz sand. Uninsulated heating wire is used as coating layer reinforcement. Rod height corresponds to coating layer thickness. Electric power is supplied from power source for 55-56 min to obtain coating layer temperature of 85-95°C and then for 180-200 min to maintain 115-125° temperature thereof. Rate of temperature change may not exceed 1°C per minute.

EFFECT: reduced power inputs along with increased coating strength.

2 tbl, 2 dwg

FIELD: chemistry.

SUBSTANCE: invention relates to production of building materials and compositions of crude mixtures for making bricks, which can be used to build low-rise buildings. The crude mixture for making bricks contains the following in wt %: sawdust 10.0-15.0; quartz sand 59.75-69.85; portland cement 20.0-25.0; sulphide-yeast wash 0.149-0.248; calcium chloride 0.001-0.002, with at water/cement ratio equal to 1.

EFFECT: high water resistance of the brick made from said mixture.

1 tbl

Up!