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A kind of preparation method of pavement fog sealing layer with hydrophobic anti-icing performance

A technology of fog sealing layer and performance, applied in building components, building insulation materials, buildings, etc., can solve the problems of small molecular weight of hydrophobic agent, insufficient hydrophobic performance, loss of snow melting function, etc., to achieve improved bonding performance, no heat consumption, The effect of improving wear resistance

Inactive Publication Date: 2018-07-03
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although part of it involves the idea of ​​hydrophobic anti-icing, the molecular weight of the simethicone oil hydrophobic agent used in it is small, and the hydrophobic performance is insufficient. With the loss of snow-melting agent, the snow-melting function is gradually lost

Method used

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  • A kind of preparation method of pavement fog sealing layer with hydrophobic anti-icing performance
  • A kind of preparation method of pavement fog sealing layer with hydrophobic anti-icing performance
  • A kind of preparation method of pavement fog sealing layer with hydrophobic anti-icing performance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Heat 964 parts of Karamay 90# asphalt to 170°C, add 35 parts of styrene-butadiene-styrene rubber block copolymer, stir and swell for 1 hour, use high-speed shearing machine to cut for 40 minutes, add 1 part of sulfur Continue to shear for 10 minutes, keep warm for 1 hour to obtain modified asphalt; heat 466 parts of water to 70 ° C, add 30.8 parts of surfactant, 1.5 parts of calcium chloride, 70 parts of water-based epoxy resin, shear and stir evenly, add Dilute hydrochloric acid until the pH value of the liquid is 3.5-4.5 to obtain soap liquid; slowly add 1000 parts of modified asphalt to 538.5 parts of soap liquid kept at 70°C, and use high-speed shearing machine to shear and disperse the modified asphalt in the soap liquid After all the modified asphalt is poured into the soap solution and cut evenly, add 40 parts of 703 room temperature vulcanized silicone rubber and continue to cut for 20 minutes to obtain emulsified asphalt with hydrophobic properties after demulsi...

Embodiment 2

[0024] Heat 1060 parts of SK90# asphalt to 170°C, add 38.5 parts of styrene-butadiene rubber block copolymer, stir and swell for 2 hours, use high-speed shearing machine to cut for 70 minutes, add 1.1 parts of sulfur and continue shearing for 20 minutes Minutes, heat preservation and development for 1 hour to obtain modified asphalt; heat 513 parts of water to 70 ° C, add 33.8 parts of surfactant, 1.7 parts of polyacrylamide, 130 parts of water-based epoxy resin, shear and stir evenly, add dilute hydrochloric acid to liquid The pH value is 3.5-4.5 to obtain soap liquid; slowly add 1100 parts of modified asphalt into 592.3 parts of soap liquid at 70°C, and at the same time use high-speed shearing machine to shear and disperse the modified asphalt in the soap liquid. After all the asphalt is poured into the soap solution and cut evenly, add 44 parts of 705 room temperature vulcanized silicone rubber and continue to cut for 20 minutes to obtain emulsified asphalt with hydrophobic ...

Embodiment 3

[0026] Heat 867.6 parts of SK90# asphalt to 170°C, add 31.5 parts of styrene-butadiene-styrene rubber block copolymer, stir and swell for 1.5 hours, use high-speed shears to cut for 60 minutes, add 0.9 parts of sulfur and continue Cut for 15 minutes, keep warm for 1 hour to obtain modified asphalt; heat 419 parts of water to 70 ° C, add 27.7 parts of surfactant, 1.4 parts of polyacrylamide, 98 parts of water-based epoxy resin, shear and stir evenly, add dilute Hydrochloric acid until the pH value of the liquid is 3.5 to 4.5 to obtain soap liquid; slowly add 900 parts of modified asphalt to 484 parts of soap liquid kept at 70°C, and use high-speed shearing machine to shear and disperse the modified asphalt in the soap liquid , After all the modified asphalt is poured into the soap solution and cut evenly, add 36 parts of 703 room temperature vulcanized silicone rubber and continue to cut for 20 minutes to obtain emulsified asphalt with hydrophobic properties after demulsificatio...

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Abstract

The invention discloses a production method of a hydrophobic anti-icing pavement fog seal layer. Fog seal layer emulsified asphalt that is demulsified to be hydrophobic and anti-icing is produced by combining low-surface-energy organic silicon rubber and emulsified asphalt through a specific shearing process, and the fog seal layer emulsified asphalt is spread to a pavement before a snowy season to form a hydrophobic anti-icing fog seal layer with a contact angle of greater than 130 degrees on the pavement; by adding waterborne epoxy resin adhesive, a mesh cross-linked structure is formed in the asphalt without excessive increase in the viscosity, improving the ability of the fog seal layer to resistant external force destruction, improving bonding performance of the fog seal layer with the pavement and thus enhancing wear resistance of the fog seal layer. It is possible to effectively reduce the strength of bonding of an ice layer with the pavement and reduce maintenance and deicing difficulty in the case of a thick ice layer. The hydrophobic emulsified asphalt demulsified hydrophobing agent used herein has certain self-assembly function, molecular long chains of the hydrophobing agent will self-assemble on the surface of an asphalt film, thus further enhancing and maintaining hydrophobicity of the fog seal layer.

Description

【Technical field】 [0001] The invention belongs to the field of road maintenance materials, and in particular relates to a method for preparing a road surface fog seal layer with hydrophobic and anti-icing properties. 【Background technique】 [0002] For road traffic in cold regions, road icing in winter is an important factor affecting road traffic safety. Under snowfall conditions, the snow on the road will be gradually compacted with the wheel load of the vehicle, and will freeze and thaw into ice in the cold and hot cycle, which will greatly weaken the anti-skid performance of the road surface and lead to frequent traffic accidents. Due to the structural depth of the road surface and the high surface energy, the ice layer on the road surface will be firmly frozen and stuck to the road surface, and it is difficult to remove it mechanically. Although the spraying of deicing agent can remove the ice accumulation on the road surface, it will cause environmental pollution and b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C08L53/02C08L63/00C08L83/04C08L33/26C08K3/06
CPCC08L95/00C08L2205/035C08L53/02C08L63/00C08L83/04C08K3/06C08L33/26
Inventor 陈华鑫吴永畅夏慧芸宋莉芳袁腾魏莘欣尹艳平
Owner CHANGAN UNIV
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