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Preparation method of low-temperature anti-displacement non-cured rubber asphalt

A non-curing rubber, anti-displacement technology, used in building insulation materials, building components, buildings, etc., can solve the problems of materials that cannot meet the requirements and are rarely mentioned, achieve good stability and durability, and ensure production and processing. , the effect of maintaining stability

Active Publication Date: 2021-04-02
HUBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, few mentions have been made about the performance stability of materials under extremely cold conditions.
Under extremely cold conditions, most of these materials cannot meet the requirements when faced with uneven settlement of buildings or large displacements of the base of the building caused by other reasons.

Method used

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  • Preparation method of low-temperature anti-displacement non-cured rubber asphalt

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Take 100 parts of anhydrous phosphogypsum whiskers with a length of 1 μm and an aspect ratio of 5:1, disperse them in 100 parts of ethyl acetate, and add 5 parts of aminosilane coupling agent Dow Corning 6020 under the condition of mechanical stirring, After reacting at room temperature for 2 hours, add 5 parts of sodium nitrite, 10 parts of hydrochloric acid with a mass concentration of 37% and 10 parts of polyetheramine D3000, continue the reaction with mechanical stirring at room temperature for 2 hours, fully wash with saturated sodium bicarbonate solution, and distill under reduced pressure , to obtain modified anhydrous phosphogypsum whiskers.

[0031] (2) Mix 100 parts of 70# asphalt, 10 parts of carboxyl-terminated liquid nitrile rubber NBR-1704 and 15 parts of engine oil, and shear and homogenize at 3000 rpm for 30 minutes at 170 ° C, add 5 parts of Triton 100, 10 parts of polyhydroxyalkanoate PHI 008 and 8 parts of BASF nylon PA6 in Germany were subjected ...

Embodiment 2

[0034] (1) Take 100 parts of anhydrous desulfurized gypsum whiskers with a length of 1 μm and an aspect ratio of 12:1, disperse them in 100 parts of butyl acetate, and add 10 parts of mercaptosilane coupling agent HD112 under the condition of mechanical stirring. After reacting for 4 hours, add 8 parts of sodium nitrite, 14 parts of hydrochloric acid with a mass concentration of 37% and 5 parts of polyetheramine ED900, continue the reaction with mechanical stirring at room temperature for 1 hour, fully wash with saturated sodium bicarbonate solution, and distill under reduced pressure. The modified anhydrous desulfurized gypsum whiskers are obtained.

[0035] (2) Mix 100 parts of 70# asphalt, 15 parts of carboxyl-terminated liquid nitrile rubber NBR-1704 and 10 parts of engine oil, and shear and homogenize at 3000 rpm at 150°C for 30 minutes, add 1 part of Tween 80, 4 One part of LE-6706 urethane acrylate and 4 parts of BASF nylon PA6 in Germany were sheared and homogenized at...

Embodiment 3

[0038] (1) Take 100 parts of anhydrous phosphogypsum whiskers with a length of 10 μm and an aspect ratio of 12:1, disperse them in 100 parts of ethyl acetate, and add 5 parts of epoxy silane coupling agent KH560 under the condition of mechanical stirring, After reacting at room temperature for 2 hours, add 7 parts of sodium nitrite, 12 parts of hydrochloric acid with a mass concentration of 37% and 5 parts of polyetheramine D3000, continue the reaction with mechanical stirring at room temperature for 1 hour, wash thoroughly with saturated sodium carbonate solution, and distill under reduced pressure. The modified anhydrous phosphogypsum whiskers were obtained.

[0039] (2) Mix 100 parts of 70# asphalt, 10 parts of carboxyl-terminated liquid silicone rubber LR5040 and 10 parts of engine oil, and shear homogenize at 3000 rpm at 150°C for 30 minutes, add 5 parts of Tween 80, 4 parts of polymer Hydroxyalkanoate PHI 008 and 4 parts of nylon PA66 from BASF in Germany were sheared an...

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Abstract

The invention discloses a preparation method of low-temperature anti-displacement non-cured rubber asphalt, and belongs to the field of waterproof materials. The method comprises the following steps:adding 100 parts of anhydrous gypsum whiskers and 5-10 parts of a silane coupling agent into an organic solvent, reacting for 2-4 hours, adding 5-8 parts of sodium nitrite, 10-14 parts of hydrochloricacid and 5-10 parts of polyether amine, continuously reacting for 1-2 hours, washing with a saturated weak base solution, and carrying out reduced pressure distillation to obtain modified anhydrous gypsum whiskers; mixing 100 parts of 70 # asphalt, 10-15 parts of liquid polymer rubber and engine oil, shearing and homogenizing, adding 1-5 parts of a surfactant, 4-10 parts of aliphatic dibasic acidester and 4-8 parts of low-temperature-resistant nylon, and continuing shearing and homogenizing to obtain modified asphalt A; and adding 5-10 parts of modified anhydrous gypsum whiskers into 100 parts of modified asphalt A, and mechanically stirring and homogenizing to obtain the non-cured rubber asphalt coating. The non-cured rubber asphalt disclosed by the invention is excellent in low-temperature base slippage stress resistance.

Description

technical field [0001] The invention belongs to the field of waterproof materials, and in particular relates to a preparation method of low-temperature displacement-resistant non-cured rubber asphalt. Background technique [0002] Non-curing rubber asphalt waterproof coating is a new type of waterproof material that is prepared by asphalt, rubber and other special functional components through a certain process. It maintains a viscous paste for a long time in the application state and never cures. It has good creep properties. , self-healing and grass-roots adaptability. Since entering the Chinese market in 2007, it has attracted the attention of many researchers. [0003] Uncured asphalt can be used alone as a waterproof sealing layer, or it can be used in combination with other waterproof membranes. In recent years, especially with the popularization of "composite waterproof layer" technology, non-cured asphalt has been rapidly promoted and applied as the coating waterpr...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08L13/00C08L83/04C08L77/02C08L77/06C08K9/06C08K9/02C08K9/04C08K7/08
CPCC08L95/00C08L2205/035C08K2201/004C08K2201/016C08L13/00C08L83/04C08L77/02C08L77/06C08K9/06C08K9/02C08K9/08C08K7/08
Inventor 江波陈顺苏英吴祥根储劲松胡军安曹奕鸣熊潇张真珠
Owner HUBEI UNIV OF TECH
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