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Preparation method of composite thermoplastic elastomer modified asphalt

A technology of thermoplastic rubber and modified asphalt, which is applied in building components, building insulation materials, buildings, etc., can solve the problems of reducing the performance of SBS modified asphalt, easy segregation of SBS modified asphalt, poor compatibility of asphalt, etc., to achieve enhanced Interfacial binding force, reduced temperature sensitivity, and good compatibility

Inactive Publication Date: 2018-02-02
蒋春霞
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a compound thermoplastic Preparation method of rubber modified asphalt

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0015] A preparation method of composite thermoplastic rubber modified asphalt, the preparation method comprises the steps of:

[0016] (1) According to the mass ratio of 1:3~4, mix fly ash and 1.2mol / L hydrochloric acid, let it stand for 30~40min, filter to obtain filter residue, wash the filter residue with water to obtain the washed filter residue, in parts by weight Count, take 10~15 parts of water, 7~8 parts of washed filter residue, 4~5 parts of absolute ethanol, 2~3 parts of silane coupling agent, put water and washed filter residue into a container and heat to 90 ~100°C, then add silane coupling agent and absolute ethanol for mixing, and stir at 300~400r / min for 1~2h to obtain a stirred mixture;

[0017] (2) Put styrene-butadiene rubber into a pulverizer to pulverize, and pass through a 100-200 mesh sieve to obtain the sieved product. In parts by weight, take 10-15 parts of the sieved product, 7-8 parts of the stirring mixture, 2~ 3 parts of thickening agent, 1~2 part...

example 1

[0020] The silane coupling agent is aminopropyltriethoxysilane.

[0021] The tackifier is coumarone resin.

[0022] A preparation method of composite thermoplastic rubber modified asphalt, the preparation method comprises the steps of:

[0023] (1) Mix fly ash and 1.2mol / L hydrochloric acid at a mass ratio of 1:3, let stand for 30 minutes, and filter to obtain a filter residue, wash the filter residue with water to obtain the washed filter residue, calculated in parts by weight, take 10 parts of water, 7 parts of washed filter residue, 4 parts of absolute ethanol, 2 parts of silane coupling agent, put water and washed filter residue in a container and heat to 90°C, then add silane coupling agent and absolute ethanol Mix and stir at 300r / min for 1h to obtain a stirred mixture;

[0024] (2) Put styrene-butadiene rubber into a pulverizer to pulverize, and pass through a 100-mesh sieve to obtain the sieved product. In parts by weight, take 10 parts of the sieved product, 7 parts...

example 2

[0027] The silane coupling agent is vinyltriethoxysilane.

[0028] The tackifier is coumarone resin.

[0029] A preparation method of composite thermoplastic rubber modified asphalt, the preparation method comprises the steps of:

[0030] (1) Mix fly ash and 1.2mol / L hydrochloric acid at a mass ratio of 1:4, let stand for 40 minutes, and filter to obtain a filter residue, wash the filter residue with water to obtain the washed filter residue, calculated in parts by weight, take 15 parts of water, 8 parts of washed filter residue, 5 parts of absolute ethanol, and 3 parts of silane coupling agent, put water and washed filter residue in a container and heat to 100°C, then add silane coupling agent and absolute ethanol Mix and stir at 400r / min for 2h to obtain a stirred mixture;

[0031] (2) Put styrene-butadiene rubber into a pulverizer to pulverize, and pass through a 200-mesh sieve to obtain the sieved product. In parts by weight, take 15 parts of the sieved product, 8 parts ...

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Abstract

The invention discloses a preparation method of a composite thermoplastic elastomer modified asphalt, and belongs to the technical field of a composite material. After immersing fly ash by hydrochloric acid, the anion spreading ability is strong, and the anion can cross through a hydration shell at the surface of the fly ash grain and actively react with the inner part to generate hydrated calciumaluminate, thus a coating layer is ruptured for the expansion of a hydrate, and its specific area is increased, and the adsorbability is stronger; polysulfide bond in the silane coupling agent is added to participate in vulcanization of butadiene styrene rubber, thus a crosslinking network is formed, and the interface bonding force between the fly ash and the rubber is enhanced; the tear intensity of butadiene styrene rubber is improved, and the compatibility with asphalt is good; moreover, the temperature sensitivity of the asphalt mortar is reduced. The preparation method has the advantagesof solving the problems that the performance of the SBS modified asphalt is reduced for the compatibility of modifier SBS and the asphalt applied at present is poor, and the SBS modified asphalt is easy to separate after thermal storage for a long time.

Description

technical field [0001] The invention relates to the technical field of composite materials, in particular to a preparation method of composite thermoplastic rubber modified asphalt. Background technique [0002] Asphalt modification is a natural or synthetic organic or inorganic material added to asphalt or asphalt mixture, which can be melted or dispersed in asphalt to improve or enhance the road performance of asphalt. With the development of the economy, road traffic has also undergone heavy load, high speed, and large traffic changes. Ordinary petroleum asphalt is brittle at low temperature and easy to soften at high temperature. Since the 1960s, many scholars at home and abroad have conducted a lot of research on the performance and structure of asphalt. However, due to the complexity of the composition and structure of asphalt materials and their sensitivity to environmental factors, although asphalt manufacturers continue to explore new asphalt production processes. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L9/06C08L45/02C08L45/00C08L1/28C08K9/02C08K9/04C08K9/06C08K7/26C08K5/12
CPCC08L95/00C08L2201/08C08L2205/035C08L2312/08C08L9/06C08L45/02C08L1/286C08K9/02C08K9/04C08K9/06C08K7/26C08K5/12C08L45/00
Inventor 蒋春霞刘蓉凤刘沁
Owner 蒋春霞
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