Bitumen-polymer mastic and a method for manufacture thereof

FIELD: manufacture of building materials.

SUBSTANCE: bitumen-polymer mastic, which can be used for sealing joints and cracks in concrete and asphalt-concrete pavements, as well as in construction of industrial and civil buildings, is constituted by divinylstyrene thermoplastic elastomer, 3.0-12.0%, plasticizer, 1.0-50.0%, antioxidant, 0.05-5.0%, filler 3.0-50, and bitumen, the rest. Manufacturing method comprises component mixing stages and conditions of stages.

EFFECT: stabilized performance characteristics and shortened manufacture time.

3 cl, 2 tbl, 4 ex

 

The group of inventions relates to the field of composite construction materials, and in particular to methods of obtaining and compositions of bitumen-polymer resin which can be used for sealing joints and cracks in concrete and asphalt concrete pavement, as well as in the construction of industrial and civil structures.

Known bitumen-polymer mastic composition, wt.%: bitumen 72-85; DST-30 5-8 and hemihydrate phosphogypsum 10-20 and method of reception, including the filing in turbomeeting low-grade bitumen, heat and introduction to it with constant stirring finely dispersed filler - hemihydrate phosphogypsum waste production of phosphoric acid and polymer additives - divinylacetylene thermoplastic elastomer (RU, patent No. 2016019, C 08 L 95/00, 1994).

The disadvantage of this mastic is its stiffness, which limits its scope, in particular, for sealing joints and cracks in concrete and asphalt pavements need to be heated up to 180°that causes the decomposition of bitumen and polymer and degrades performance mastic, especially its low-temperature properties.

Closest to the technical nature of the proposed mastic mastic is bitumen-polymer "Transkor", which includes road viscous bitumen - 70-90 wt.%, divinition the first thermoplastic elastomer is 0.5 to 12 wt.%, plasticizer - 0.5 to 7.5 wt.%, rubber - 1-7 wt.%, the filler is 1.5-12 wt.% (RU, patent No. 2192579, F 16 L 58/12, 2002)

The disadvantage of mastic is limited to its use for application as insulation anti-corrosion coating of pipes, for the polymer of the roll of material.

The main component of the proposed bitumen-polymer mastic is a bitumen having different quality characteristics even within a particular brand of bitumen, which complicates the selection of qualitative and quantitative characteristics of other components of the mastic, as well as sequences and their mode of mixing.

The technical result from the use of the proposed bitumen-polymer mastic is to expand its functionality by improving operational properties.

The technical result is achieved due to the fact that bitumen-polymer mastic containing bitumen, definiltely a thermoplastic elastomer, a plasticizer and a filler further comprises an antioxidant in the following ratio, wt.%:

definiltely TPR3,0-12,0
the plasticizerfrom 1.0 to 50.0
antioxidant0,05-5,0
nab is lntel 3,0-50
bitumento 100

the antioxidant is preferably used polyethylsiloxane liquid.

A method of obtaining a bitumen-polymer mastics, according to which turbomeeting serves low-grade bitumen is heated to a temperature of 160-180°injected with constant stirring part of the fine filler of three-hydrate phosphogypsum, then the mixture is injected first portion of the butadiene-styrene thermoplastic elastomer to obtain a mixture with a ratio of: bitumen: polymeric additive: filler = 1:0,002:0,028, then within 5-10 min in equal parts download the rest of the polymer additive to obtain a mixture with a ratio of: bitumen: polymeric additive: filler = 1:0,058-0,110:0,028, the mixture is stirred for 40-60 min, then enter the remaining number of filler within 4-8 min, followed by final mixing for 10-30 min until complete homogenization of the composition in a ratio of components, wt.%: bitumen - 72-85, DST-30 - 5-8, hemihydrate phosphogypsum - 10-20. (RU, patent No. 2016019, C 08 L 95/00, 1994).

The disadvantage of this method is the inability to control the weight of the dispersion polymer, resulting in lower operational characteristics of the bitumen-polymer is astika.

The closest in technical essence and the achieved effect to the proposed method is a method for obtaining bitumen-polymer putty by mixing while heating thermoplastic elastomer, plasticizer, preheated bitumen and mineral filler, when this is mixed per 100 parts by weight of thermoplastic elastomer 10-20 parts by weight of plasticizer, 70-200 parts by weight of the pre-heated bitumen, 30-250 parts by weight of mineral filler and keep stirring at a temperature of 70-100°C for 10-15 min, the mixture obtained is homogenized at a temperature of 130-160°C for 10-15 min in a screw extruder, equipped with a granulating device, cooled by water having a temperature of 20-40°C, through which the composite mass, then the obtained pellets of the composition is dried and Packed. Granules bitumen-polymer composition is mixed with the preheated bitumen, mixing is carried out at a temperature of 160-180°C for one hour to dissolve granules (RU, patent No. 2177969, C 08 L 95/00, 2002)

The disadvantages of this method of obtaining a bitumen-polymer mastic enclosed in need double heat the product. To melt pellets are needed or long-term ageing at a temperature of 160-170°or a temperature increase of no less than up to 180°that leads to the deterioration operate the operating properties of mastic from going as is, and in other cases, thermal decomposition of the polymer and bitumen.

The task of this method is the increased functionality of the bitumen-polymer mastics and receipt of products with sustainable operational physico-mechanical properties, in particular low-temperature deformation.

The technical result is to reduce the time of production of mastic with a stable high operational properties.

The task and the technical result is achieved due to the fact that the method of obtaining a bitumen-polymer mastics, including the mixing of components is pre-heated bitumen, divinylacetylene thermoplastic elastomer and plasticizer, the original quantity of bitumen is divided into two parts, the first part of 10-60% of the initial amount of pre-heated bitumen to a temperature not lower than 90°With mixed using a high speed stirrer for 10-30 min, the mixture is reheated to 110°and enter definiltely thermoplastic elastomer, and an antioxidant, followed by processing equipment with high shear stress while heating to 130-165°received bitumen-polymer mixture is injected into the second part of 40-90% of the original quantity of bitumen and dispersed using low speed mixers and equipment with high the m shear stress to obtain a homogeneous mass, then enter the filler and when the stirrer, the mixture was fed to the equipment with high shear stress.

A method of obtaining a bitumen-polymer mastic is as follows.

For the preparation of bitumen-polymer mastics used:

as bitumen of various grades of bitumen, such as bitumen road viscous grades BND 60/90; BND 40/60; BND 90/130 - GOST 22245-90; bitumen roofing BNK 45/190 marks according to GOST 9548-74; bitumen insulation BNI IV according to GOST 9812-74;

as divinylacetylene thermoplastic elastomer - polymer linear structure - DST-30-01 on THE 38.103267-80 or branched structures - DST-R-01 on THE other 38.40327-98, as well as polymers imported type SBS (SBS) with a ratio of styrene/butadiene 30/70 and an average molecular weight MW 230000 (see patent 2103290) etc.;

as the plasticizer - industrial grade oil I-20A, AND 30A, AND 40A according to GOST 20799-88, vacuum gas oils, waxy TU 38.401-58-62-93, oil-softner neveplast on THE 38.101936-83 or raw materials for the production of viscous road bitumen in THE 38.101582-75 with am.1-6;

as antioxidant polyethylsiloxane liquid PES-3 PES-5 according to GOST 13004-77 "Liquid silicone PES -1,2,3,4,5, or Agidol-1 technical (trade name ionol) TU 38.5901237 with am.1, 2;

- as a filler is talc according to GOST 19729-74, chalk marks MTD on T the 21-RF-763-92, the mineral powder for asphalt-concrete mixtures according to GOST 12784-78, dolomite according to GOST 23672-79 and crushed crumb RD-05 TU 38-108-03597 or mixtures thereof.

The original quantity of bitumen is divided into two parts and placed in two reactors: 10-60% of the bitumen is placed in the first reactor, and the remainder in the second. In the first reactor with a heating jacket and a high-speed stirrer bitumen heated to a temperature of not lower than 90°and type plasticizer (e.g., vacuum gas oil) when the rotation speed of the stirrer 150-300 rpm for 10-30 minutes, after which, the mixture is reheated to 110°With, give it definiltely thermoplastic elastomer, and an antioxidant, heated to 130-165°and is pumped into the second reactor, containing the remainder of the original bitumen and is equipped with a slow stirrer, by passing through the equipment with high shear stress, for example, colloidal mill. The introduction of the antioxidant at the same time with divinylacetylene thermoplastic elastomer can improve the process of stabilization of the bitumen-polymer-masterii, by reducing thermal oxidative degradation of bitumen and blockcopolymer Preferably as an antioxidant to use polyethylsiloxane (PES), as it is environmentally safe with a preheated 130-165°With bitumen-polymer mixture or hot asphalt cm is sue it does not emit dangerous for human health products. In the second reactor, the mixture was dispersed by stirring with slow speed stirrer with a speed of 40 to 150 rpm and equipment with high shear until homogeneous, and then produce a selection of sample homogeneity. In the resulting bitumen-polymer composition is injected filler and running slow stirrer, the mixture was fed to the equipment with high shear stress.

The authors are not known composition and method for producing bitumen-polymer mastic similar proposed, which allows to make a conclusion on the conformity of the proposed solutions to the criterion "novelty".

Bitumen-polymer mastic experience in accordance with GOST R 52056-2003.

Example 1. In a reactor with a volume of 10 cubic meters of 5.05 download tons of bitumen BND 60/90 (20% of the original quantity of bitumen) at a temperature of 100°Since, when the heating and agitator load plasticizer - industrial oil - And-30 And in the amount of 3.5 tons. Simultaneously bitumen in quantities of 20, 22 tons (80% of the original quantity of bitumen) is loaded into the reactor with a capacity of 40 cubic meters a Mixture of bitumen and plasticizer in the reactor with a volume of 10 cubic meters is reheated to 110°With, then download definiltely TPR DST-30-01 in the amount of 1.05 tons and antioxidant PES-5 in the amount of 0.98 tons and stirred for 15 minutes with the mixer rotation speed of 200 rpm for uniform distribution of the poly the EPA in the reactor volume. All processes are temperature-controlled, preventing its increase above 165°C. Next, the contents of the reactor with a capacity of 10 cubic meters through the equipment with high shear stress (colloid mill) overload in the reactor with a capacity of 40 cubic meters, where the dispersed polymer-bitumen mixture in bitumen by mixing the low-speed stirrer (speed 50 rpm), as well as transmission of the content of the reactor recycle "himself" through a colloid mill at a temperature not exceeding 165°and not less than 130°C for 40 minutes and then take the test for homogeneity. Upon reaching the homogeneous state in a reactor with a volume of 40 cubic meters load fillers (a mixture of rubber crumb and chalk) in the amount of 3.5 tons and when operating the mixer contents of the reactor is passed into the recycling through a colloid mill for 40 minutes at a temperature of not higher than 165°and not less than 130°for uniform distribution of the filler in the reactor volume.

Examples 2, 3, and 4 are carried out under the conditions of example 1 and differ in the number of components and raw materials.

Formulation of polymer-bitumen mastics are shown in Table 1. The total time of mixing components of the composition until smooth (for batch release of about 30 tons) is 1 h 35 min, for the production of a uniform batch of the same amount in terms of the prototype, reproduced is the second data, you need about 4 hours with a minimum guarantee of complete dissolution of the polymer. Thus, the advantage of the proposed technical solution is including, and reduce the time of production of large quantities of the product (over 5 tons).

Introduction in the process of obtaining a bitumen-polymer mastic antioxidant simultaneously with divinylacetylene thermoplastic elastomer reduces thermal-oxidative degradation of bitumen and blockcopolymer, which results in obtaining a bitumen-polymer mastic with stable operating characteristics, particularly low-temperature properties.

Performance characteristics of the finished product obtained according to examples 1-4, as well as in terms of the prototype reproduced by the authors to the data given in Table 2.

Thus, getting offered by way of bitumen-polymer mastic claimed composition allows to obtain high-quality uniform product that can be used for sealing joints and cracks in concrete and asphalt concrete pavement, as well as in the construction of industrial and civil structures and allows to reduce the consumption of expensive original polymer, while reducing time of receipt of the bitumen-polymer putty.

Table 1

Formulation of polymer-bitumen mastic.
No.ComponentsNumber, wt.%
1234
1.BND 60/9072,2
2.BND 90/13063,0
3.BNK 45/190 marks39,95
4.IV30,0
5.And-30A10,01,0
6.Vacuum gas oils, waxy brand B5,0
7.Neveplastto 12.0
8.Raw materials for the production of viscous oil road bitumen45,0
9.DST R-017,0 to 12.0
10.DST 30-013,09,0
11.PAS2,80,05
12.PAS1,05,0
13.Crumb rubber7,045,03,0
14.Chalk5,0
15,Talcof 17.05,0

Table 2

Operational characteristics of mastic
# exampleName characteristics
To warmupAfter warming up*
T EXT., °Flexibility on the web., °The deformation at (-20)°,% T EXT., °Flexibility on the rod, °The deformation at (-20)°,%
Prototype60-2245 66-1735
1.78-5021580-50220
2.85-6030085-60300
3.88-5540086-55390
4.98-40115100-40110
*heating was carried out according to GOST 18180 "Bitumen oil. Method of determining weight changes after warming up".

1. Bitumen-polymer mastic containing bitumen, definiltely a thermoplastic elastomer, a plasticizer and a filler, characterized in that it further comprises an antioxidant in the following ratio, wt.%:

Definiltely TPR3,0-12,0
The plasticizerfrom 1.0 to 50.0
Antioxidant0,05-5,0
Filler3,0-50
Bitumen100

2. Bitumen-polymer mastic according to claim 1, characterized in that as antioxid Anta use of polyethylsiloxane the new fluid.

3. A method of obtaining a bitumen-polymer mastics, including the mixing of components is pre-heated bitumen, divinylacetylene thermoplastic elastomer, filler and plasticizer, wherein the initial quantity of bitumen is divided into two parts, the first part of 10-60% of the initial amount of pre-heated bitumen to a temperature not lower than 90°mixed with the plasticizer using a high-speed stirrer for 10-30 min, the mixture is reheated to 110°and enter definiltely thermoplastic elastomer, and an antioxidant, followed by processing equipment with high shear stress while heating to 130-165°With the obtained bitumen-polymer mixture is injected into the second part of 40-90% of the original quantity of bitumen and dispersed using a slow speed mixer and high shear stress to obtain a homogeneous mass, then injected the filler and when the stirrer, the mixture was fed to the processing equipment with high shear stress.



 

Same patents:

FIELD: manufacture of building materials.

SUBSTANCE: bitumen-polymer composition, which can be used in road building to create asphalt-concrete pavements, aerodrome and bridge surfaces, is constituted by divinylstyrene thermoplastic elastomer, 1.0-5.0%, plasticizer, 1.0-20.0%, antioxidant, 0.05-5.0%, and bitumen, the rest. Manufacturing method comprises component mixing stages and conditions of stages.

EFFECT: stabilized physicochemical performance characteristics and shortened manufacture time.

3 cl, 2 tbl, 4 ex

FIELD: corrosion protection.

SUBSTANCE: invention is designed for oil production and can also be used in mechanical engineering, instrumentation engineering, and other branches. Composition contains 6-10% low-grade lignosulfonates, 2-5% industrial oil (spindle oil, tall oil, or MS-20 oil), 60-65% production waste, and 24-28% additive, namely primary C8-C11-amines. Production waste is, in particular, vat residues from production of synthetic fatty C10-C-acids or solid petroleum hydrocarbons: asphaltene-tar-paraffin deposits formed during production and transportation of petroleum. Use of composition increases degree of protection of metallic objects against corrosion under atmospheric precipitate conditions owing to retained high adhesion of coating formed from composition to metal, reduced porosity of coating, and prolonged period of time before appearance of the first center of corrosion attack at lower thickness of coating.

EFFECT: improved anticorrosion characteristics, simplified composition preparation technology, reduced coating formation time, and reduced expenses due to utilized waste.

2 cl, 2 tbl

Pipeline coating // 2247135

FIELD: liquid conveyance, pipeline coating.

SUBSTANCE: claimed coating consists bitumen composition, obtained by blending of bitumen and premix additive, containing (wt %) I) 20-90 % at least one block copolymer of vinylaromatic hydrocarbon and conjugated diene; ii) 1-20 % of carbon black, and balance: iii) auxiliary mixing agent. Bitumen composition may optionally contain a filling. Pipelines having such coating and method for producing the same are also disclosed. Coated pipelines of present invention are useful in high-temperature liquid conveyance.

EFFECT: coated pipelines of improved high-temperature characteristics.

9 cl, 1 tbl, 5 ex

Paint // 2238290
The invention relates to paints, varnishes and lacquers, in particular for paints based on bituminous materials, and may find applications in areas that require materials with high moisture resistance, resistance to peeling and cracking

The invention relates to the composition of corrosion-resistant mastic used to protect metal surfaces from weathering

The invention relates to the field of construction, namely the construction of road pavement, and can be used in the construction of roads, airfields, sports grounds and roofs using bituminous binders

The invention relates to bituminous primers

The invention relates to compositions for the application of anticorrosion coatings on ferrous metals and can be used for corrosion protection of large metal containers, pipelines, under the influence of precipitation, air and water environments
Sealant // 2208032
The invention relates to bodegasanmarcos.com chemicals, reversible hardening with the cured state of a certain elasticity, keeping it for a long time, so you can use it as a sealant at a temperature of from 100 to -50oWith

FIELD: manufacture of building materials.

SUBSTANCE: bitumen-polymer composition, which can be used in road building to create asphalt-concrete pavements, aerodrome and bridge surfaces, is constituted by divinylstyrene thermoplastic elastomer, 1.0-5.0%, plasticizer, 1.0-20.0%, antioxidant, 0.05-5.0%, and bitumen, the rest. Manufacturing method comprises component mixing stages and conditions of stages.

EFFECT: stabilized physicochemical performance characteristics and shortened manufacture time.

3 cl, 2 tbl, 4 ex

FIELD: building industry, in particular production of bitumen emulsions for roof claddings, hydraulic insulating materials, binder for organomineral mixtures and cold blacktops.

SUBSTANCE: claimed emulsion contains (mass %) bitumen 47-50; mixture of cotton oil secondary reprocessing product with flotogoudron in ratio of (40-70):(60-30) 3.0-5.0; sodium hydroxide 0.6-1.0 or potassium hydroxide 0.3-0.8; and balance: water. Claimed emulsion is obtained by preparation of emulsifier from part of mixture of cotton oil secondary reprocessing product with flotogoudron (namely slop from distillation of vegetable oil fatty acids), when agitation with preheated sodium hydroxide or potassium hydroxide aqueous solution up to full mixture dissolution to produce finished emulsifier aqueous solution followed by introducing when agitation of heated bitumen being mixed with residual mentioned above mixture.

EFFECT: bitumen particles with decreased surface tension and coalescence; more active interaction between bitumen and emulsifier aqueous solution; stable emulsion with prolonged storage time.

2 cl, 2 tbl

FIELD: production of polyurethane-bitumen composition for encapsulants, hydraulic insulating and anticorrosion insulating coats for various surfaces (concrete, metal, etc).

SUBSTANCE: claimed composition contains (mass %): bitumen/shale mastic 70-95; prepolymer mixture 5-30. Said prepolymer mixture is based on polyoxypropylenetriols and isocyanate component, wherein the first prepolymer is based on mixture of polyoxypropylenetriols with molecular mass of 300-6000 and toluylenediisocyanate in ratio of (80-85):(20-15), respectively, and the second one is based on mixture of polyoxypropylenetriols with molecular mass of 300-6000 and hexamethylenediisocyanate in ratio of (65-80):(50-20), respectively, and mass ration of the first and second prepolymers in mixture is (80-50):(50-20).

EFFECT: material with increased elongation, tensile strength, decreased water adsorption, attrition, controllable coat hardness and elasticity.

7 ex, 1 tbl

FIELD: manufacture of road building materials.

SUBSTANCE: process comprises compounding lacquering bitumen (trade mark "G", 75-95%) with road bitumen (10-25%) characterized needle penetration depth 65-110 dmm (25°C) and stretchability 150 cm at 25°C. Bitumen of mark G is preliminarily reduced to fragments and compounding is carried out for 30-45 min at 170-180°C.

EFFECT: simplified bitumen manufacture technology and enabled control of quality of hot asphalt-concrete mixes.

4 tbl, 9 ex

FIELD: manufacture of road building materials.

SUBSTANCE: process comprises compounding commercial bitumen (92.5-97.5%) with petroleum processing product (2.5-7.5%), in particular bitumen converter, which is preliminarily obtained in the form of straight-run petroleum fraction from heavy low-paraffin naphthenic-base petroleum with kinematic viscosity 65-85 cSt at 50°C. Commercial bitumen is characterized by penetration at least 68 (25°C) and stretchability above 150 cm at 25°C.

EFFECT: improved performance characteristics of product and simplified manufacture technology.

4 tbl, 4 ex

FIELD: road, industrial and civil building, in particular sealing and hydraulic insulating material.

SUBSTANCE: invention relates to industrial method for production of modified bitumen mastic. Claimed bitumen-polymer material contains (mass %) oil bitumen 60-70; synthetic resin 2-10; oil solvent and/or black oil 18-30; sulfur-containing compounds 0.5-5.0; and additionally oxyethylated alkylphenol as surfactant 0.1-5.0. Sulfated mixture of oil bitumen, synthetic resin, oil solvent and/or black oil treated for sulfitation at 140-2300C is used as sulfur-containing compounds. Method for production of said material also is disclosed.

EFFECT: polymer-modified bitumen mastic and sealing of improved quality; method for production of increased capability; inexpensive raw materials; energy-conversation technology.

6 cl, 3 ex, 4 tbl, 1 dwg

FIELD: highway and aerodrome engineering, in particular binder for highway engineering.

SUBSTANCE: claimed binder contains (mass %): bitumen 95-98.5; propylene pentamers (waste from fractionation of propylene oligomers to produce propylene trimers and dimers).

EFFECT: decreased brittle point, improved adhesion, and increased elasticity.

1 ex, 3 tbl

Bitumen emulsion // 2244725

FIELD: road-building materials.

SUBSTANCE: pavement-intended bitumen emulsion contains, wt %: bitumen, 45-49; surfactant-type emulsifier in the form of amines, diamines, polyamines, and quaternary ammonium salts, 0.125-0.25; aqueous hydrochloric acid for neutralization of emulsifier, 1-2; additionally, polyalkylbenzene resin produced as by-product in isopropylbenzene production process, 1-15; and water, the balance.

EFFECT: increased resistance of bitumen component to oxidative ageing processes without losses in other performance characteristics.

2 tbl, 12 ex

FIELD: highway building and repair, in particular surface treatment of pavements.

SUBSTANCE: claimed emulsion contains (mass %) mineral material 83.5-87.5 and cation bitumen emulsion 11.5-14.5. Mineral material additionally contains cement 1.0-2.0; cation bitumen emulsion contains (mass %) bitumen 60/90 59.0-65.0; cation emulsifier 0.7-0.9; surfactant admixture 0.15-0.25; calcium chloride 0.07-0.13; hydrochloric acid 0.35-0.60; oxyethylated phenolic alcohol 0.65-0.80; and balance: water.

EFFECT: mixture with improved adhesive quality of binder with mineral acidic and basic rocks; improved strength characteristic, increased water resistance coefficient, enhanced emulsion decay time.

1 ex, 4 tbl

Bitumen emulsion // 2243245
The invention relates to cationic bitumen emulsions, which are used as the binder material for the device and repair the road surface, and can be used for rough-surface treatment and for patching pavement

FIELD: highway building and repair, in particular surface treatment of pavements.

SUBSTANCE: claimed emulsion contains (mass %) mineral material 83.5-87.5 and cation bitumen emulsion 11.5-14.5. Mineral material additionally contains cement 1.0-2.0; cation bitumen emulsion contains (mass %) bitumen 60/90 59.0-65.0; cation emulsifier 0.7-0.9; surfactant admixture 0.15-0.25; calcium chloride 0.07-0.13; hydrochloric acid 0.35-0.60; oxyethylated phenolic alcohol 0.65-0.80; and balance: water.

EFFECT: mixture with improved adhesive quality of binder with mineral acidic and basic rocks; improved strength characteristic, increased water resistance coefficient, enhanced emulsion decay time.

1 ex, 4 tbl

Up!