Waterproof frost-resistant road asphalt coat

FIELD: chemistry.

SUBSTANCE: invention relates to construction and can be used in road construction. The coating contains a polymer base - two liquid low-molecular weight rubbers with terminal epoxy and carboxyl functional groups, copolymerisable and three-dimensionally cross-linked by an agent. Said rubber is polydiene isoprene urethane rubber with terminal epoxy groups and polybutadiene rubber with terminal carboxyl groups. The coating also contains filler in form of polyfractional silicon dioxide and additionally contains processing additives which include a three-dimensionally cross-linking agent with epoxy functional groups which are antipodal with respect to carboxyl groups, a thixotropic booster and an elastomer pigment - technical carbon and a catalyst for three-dimensional cross-linking rubber. The ingredients are in the following ratio, wt %: two liquid low-molecular weight rubbers with terminal epoxy and carboxyl functional groups - 9.0-18.0, polyfractional silicon dioxide - 77.0-86.5, process additives - 4.5-5.0.

EFFECT: improved waterproofing properties and frost-resistance of road asphalt.

2 cl, 1 tbl, 2 ex

 

The invention relates to the field of construction and can be used for the construction of highways situated in the geographical latitudes of the Earth with sharply continental climate.

Known asphalt composition comprising naphthenic asphalt and block copolymer containing a diene group forming unit, characterized by a content of 1,2 vinyl component is at least 15 wt.% and less than 35 wt.% (patent RF №2397188 from 20.08.2010).

Known material for protective coatings for building structures, containing basic composition consisting of rubber waste and waste mixture of high-pressure polyethylene and waste thermoplastics, auxiliary additives and pigments. As the waste high-pressure polyethylene contains crushed listed waste, as waste thermoplastics - crushed waste of chlorosulfonated polyethylene or crushed polymer waste cable industry, as well as rubber waste - fine rubber powder (TIC), in the following the main components of the composition, parts by weight: the specified mix - 40-45, TIC - 55-60. In the above-mentioned mixture content of the waste chlorosulfonated polyethylene or polymer waste cable industry does not exceed 30 wt.%. The maximum particle size of TIC not exceed 0.3 mm, and the content of particles with a size of 0.3 mm is not less than 50 wt.% (patent RF №2237789 from 10.10.2004).

Known combined waterproofing coil coating comprising polymer-bitumen composition based on chlorosulfonated polyethylene "ANTICOR BCH-1", rubber sublayer "Unicron" based rubber and polyamide fabric with additional content in polymer-bitumen compositions as modifying additives chlorinated polyethylene with a chlorine content of 40 wt.%. Floor to extend the service further comprises the protective layers of plasticized polyvinyl chloride and corrosion of the enamel on the basis of chlorosulfonated polyethylene (RF patent No. 2232216 from 10.07.2004).

The General disadvantages of the known coatings is their low elasticity in the region of low temperatures and high creep in the range of high temperatures, does not reliably protect the asphalt from cracking, the phase transitions of water-ice-water.

Closest to the technical essence and the achieved result to the claimed technical solution is a polymeric composition for coating comprising polysulfide oligomer is liquid Thiokol" with srednekamennogo molecular weight 1700-5500 and a viscosity at 25°C 7.5 To 50 PA·s, the filler is chalk gidrofobizirovannym, plasticizer, di is xed manganese, 2,4,6-Tris-(dimethylaminomethyl)-phenol and optionally the adhesion additive - sililirovany amine selected from the group of N,N'-bis-(trimethylsilyl)-N,N'-dimethylethylenediamine, N,N"-bis-(trimethylsilyl)-N,N',N"-triethyltetramine and 1,3-dibutil-2-methyl-2-vinyl-1,3-diaza-2-silacyclopentane, in the following ratio of components, parts by weight:

Polysulfide oligomer100
Manganese dioxide9-15
Chalk gidrofobizirovannym40-50
The plasticizer30-60
2,4,6-Tris-(dimethylaminomethyl)-phenol0,2-0,6
Sililirovany Amin0,2-0,6

(patent RF №2327721 from 27.06.08). This flooring is made as a prototype.

The characteristics of the prototype matching the characteristics of the invention: polymer basis - low molecular weight rubber; a filler.

The disadvantages of the known coatings is its low elasticity in negative temperatures and creep in the range of positive temperatures. In addition, "ticoll" as a hydrogen sulfide-containing rubber characteristic is about the selection at positive temperatures of hydrogen sulphide the toxin.

The problem to which the invention is directed, - improving the frost resistance of asphalt roads due to its surface waterproofing elastic over a wide temperature range (-50°C to +50°C) blade, preventing ingress of water inside the cracks of the asphalt and the formation of winter ice, destroying it because of the volume expansion of the latter.

The task was solved by what is known waterproofing coating comprising a polymer base - low molecular weight rubber and a filler, as a polymer base contains two low-molecular liquid rubber with terminal functional groups, epoxy and carboxyl, copolymerizate and three-dimensional slivaushiesia agent, as such rubbers are used polyvinylpirrolidone rubber with terminal epoxy groups and polybutadiene rubber with terminal carboxyl groups, as filler contains molefractions silicon dioxide and further comprises processing AIDS, including a three-dimensional crosslinking agent with antipodal epoxy, relative to the carboxyl functional groups, thixotropic amplifier and pigment elastomer - carbon black, catalyst three-dimensional crosslinking of rubbers in the following ratio ingredient is in, wt.%:

two low-molecular liquid rubber with integral
functional groups of epoxy
and carboxyl9,0-18,0
poly fractional silicon dioxide77,0 is 86.5
technological additives4,5-5,0

As the catalyst of the three-dimensional crosslinking rubber floor contains acetyl-acetonate iron.

The characteristics of the proposed technical solution, distinctive features of the prototype, as the polymer base coating contains two low-molecular liquid rubber with terminal functional groups, epoxy and carboxyl, copolymerizate and three-dimensional slivaushiesia agent; as such rubbers are used polyvinylpirrolidone rubber with terminal epoxy groups and polybutadiene rubber with terminal carboxyl groups; as filler contains molefractions silicon dioxide; further comprises processing AIDS, including a three-dimensional crosslinking agent with antipodal epoxy, relative to the carboxyl, function and the regional groups, thixotropic amplifier and pigment elastomer - carbon black, catalyst three-dimensional crosslinking of rubbers; as a catalyst of the three-dimensional crosslinking of rubbers contains acetyl-acetonate iron; a different proportion of ingredients used.

Distinctive signs, in conjunction with the known, allow for a high degree of waterproofing to improve the frost resistance of asphalt roads.

As the polymer base used two low-molecular liquid rubber with terminal functional groups - SOPS-3B (epoxydodecane) and SKD-CTD (carboxyl-containing), copolymerizate and three-dimensional slivaushiesia agent.

As filler applied molefractions silicon dioxide in the form of a mixture of natural crystalline quartz and biogeneticists highly dispersed amorphous trademark "Aerosil", taken in a mass ratio of 70-75:30-25, respectively.

Technological additives: a three-dimensional crosslinking agent with antipodal (epoxy), relative to the carboxyl functional groups of the resin EET-1; thixotropic amplifier and pigment elastomer - carbon black (soot); the catalyst of the three-dimensional crosslinking of rubbers, such as acetyl-acetonate iron.

Use as a waterproofing coating filled elastomer specified ti is and provides elastic (reversible) deformation of the surface of the road in the temperature range from -50°C to +50°C what prevents the destruction of the asphalt at alternating temperatures and operational loads.

Enablement of the claimed invention, the following examples.

Example 1

To obtain resistant waterproofing coating asphalt roads used the following components:

polymer-based mixture (in the ratio 1:2) positioniterator rubber with terminal epoxy groups of the brand SOPS-3B and polybutadiene rubber with terminal carboxyl groups of the brand SKD-KTR (13.5 wt.%);

natural crystal quartz particle size of 500-1500 μm (57,4 wt.%) and superfine (30-40 nm) silicon dioxide trademark "Aerosil-380" (24.6 wt.%);

technological additives - thixotropic amplifier and pigment elastomer - carbon black dispersion 10-20 nanometers (3.0 wt.%), three-dimensional crosslinking agent is an epoxy resin brand EET-1 (1.45 wt.%), the catalyst of the three-dimensional crosslinking of rubbers - acetyl-acetonate iron (0,05 wt.%).

Example 2

To obtain coverage used the following components:

polymer-based mixture (in the ratio 2:3) positioniterator rubber with terminal epoxy groups of the brand SOPS-3B and polybutadiene rubber with terminal carboxyl groups of the brand SKD-KTR (11,25 mA is.%);

natural crystal quartz particle size of 500-1500 μm (58,8 wt.%) and superfine (30-40 nm) silicon dioxide trademark "Aerosil-380" (25,2 wt.%);

technological additives - thixotropic amplifier and pigment elastomer - carbon black dispersion 10-20 nanometers (3.16 wt.%), three-dimensional crosslinking agent is an epoxy resin brand EET-1 (1,536 wt.%), the catalyst of the three-dimensional crosslinking of rubbers - acetyl-acetonate iron (0,054 wt.%).

The components are mixed in the examples was carried out at a temperature of 55-60°C in the continuous mixer of the type CIS-75" with the subsequent formation of a width of 3.0 m and a thickness of a 0.012 m. Three-dimensional crosslinking polymer base material of the blade is held in the drum-type vulcanizer continuous operation at a temperature in the range of 170-180°C with a residence time in the apparatus 7-5 minutes respectively. Received and thumb with rolls (25 meters long each) on the asphalt, pre-smeared with liquid bitumen (oil), waterproofing cloth by the relative speed of uniaxial tension of 1.4·10-3with-1had the following mechanical properties (see table).

# exampleBreaking strain, %1at a temperature of minus 50°C21,001,30
at a temperature of + 50°C48,000,42
2at a temperature of minus 50°C23,001,20
at a temperature of + 50°C51,000,38

Note: discontinuous deformation of conventional asphalt at temperatures of minus 20-30°C is 0.1 to 0.2%.

These characteristics indicate increased frost resistance of the coating asphalt of the road and allow it to be used in a wide temperature range of operation (from -50°C to +50°C) for 10-15 years.

1. Waterproofing resistant coating asphalt of the road, including a polymer base - low molecular weight rubber and a filler, characterized in that as the polymer base it contains two low-molecular liquid rubber with terminal functional groups, epoxy and carboxyl, copolymerizate and three-dimensional Skyways is to be the agent, as such rubbers are used polyvinylpirrolidone rubber with terminal epoxy groups and polybutadiene rubber with terminal carboxyl groups, as filler contains molefractions silicon dioxide and further comprises processing AIDS, including a three-dimensional crosslinking agent with antipodal epoxy, relative to the carboxyl functional groups, thixotropic amplifier and pigment elastomer - carbon black, catalyst three-dimensional crosslinking of rubbers in the following ratio of ingredients, wt.%:

two low-molecular liquid rubber with integral
functional groups, epoxy and
carboxyl9,0-18,0
molefractions silicon dioxide77,0 is 86.5
technological additives4,5-5,0

2. The coating according to claim 1, characterized in that the catalyst of the three-dimensional crosslinking of rubbers contains acetyl-acetonate iron.



 

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18 cl, 4 tbl, 7 ex

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18 cl, 4 tbl, 7 ex

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15 cl, 2 tbl, 4 ex

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2 tbl

FIELD: special compositions.

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2 tbl

FIELD: chemical industry; production of polymeric compositions on the epoxy basis.

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4 cl, 12 ex, 3 tbl

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FIELD: chemistry.

SUBSTANCE: fire-resistant rubber mixture contains high-molecular weight methyl vinyl siloxane rubber, finely dispersed silicon dioxide, powder quartz, α,ω-dihydroxydimethyl siloxane, an organic peroxide and melamine cyanurate in ratio of 55-80 pts.wt per 100 pts.wt rubber and, optionally, a pigment. The organic peroxide used can ditertbutyl peroxy isopropyl benzene, 2,5-dimethyl-2,5-dibutylperoxy, or 2,4-dichlorobenzoyl peroxide.

EFFECT: invention reduces the cost of production of the material based on the rubber mixture owing to single-step curing, high fire-resistance with environmentally safe application thereof.

4 cl, 2 tbl

FIELD: chemistry.

SUBSTANCE: mixture contains a rubber component which contains a natural rubber component consisting of at least either natural rubber or epoxidated natural rubber. The mixture also contains inorganic filler containing at least silicon dioxide. Content of said inorganic filler ranges from 50 pts.wt to 80 pts.wt per 100 pts.wt said rubber component when the rubber mixture is used to obtain rubber for the clinch, and from 60 pts.wt to 100 pts.wt per 100 pts.wt said rubber component when the rubber mixture is used to obtain rubber for the sidewall filler. Content of soot in the rubber mixture ranges from 2 pts.wt to 5 pts.wt pr 100 pts.wt said rubber component. If the rubber mixture is used for the sidewall filler, the inorganic filler contains silicon dioxide and clay, the amount of clay in the mixture being equal to 5-40 pts.wt per 100 pts.wt rubber component and the total amount of silicon dioxide and clay is at least 65 pts.wt per 100 pts.wt rubber component. The result is reducing the amount of materials derived from oil resources when producing the rubber mixture.

EFFECT: improved operational characteristics.

8 cl, 1 dwg, 5 tbl, 16 ex

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