A kind of mesoporous molecular sieve modified anti-rutting agent and preparation method thereof

A technology of mesoporous molecular sieve and anti-rutting agent, which is used in building components, building insulation materials, buildings, etc., can solve the problems of physical migration and volatilization of anti-aging agents, reducing low-temperature performance of asphalt concrete, and limited anti-aging performance, etc. Anti-aging performance, improving anti-rutting performance and low temperature performance, the effect of not easy to rut

Active Publication Date: 2021-03-02
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the antioxidant is simply mixed with waste plastics, etc., causing problems such as easy volatilization and migration of the antioxidant, which affects the performance of its anti-aging performance
[0007] In summary, although the existing technology can improve the anti-rutting performance of asphalt concrete to a certain extent, there are problems of reducing the low-temperature performance of asphalt concrete and insufficient anti-aging performance
Although some technologies add antioxidants, they simply mix the anti-aging agent with the anti-rutting agent, which will cause physical migration and volatilization of the anti-aging agent, resulting in limited anti-aging performance

Method used

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  • A kind of mesoporous molecular sieve modified anti-rutting agent and preparation method thereof
  • A kind of mesoporous molecular sieve modified anti-rutting agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] (1) Mix 1 part by weight of MCM-41 mesoporous molecular sieve (with a specific surface area of ​​1000 m 2 / g), 3-aminopropyltrimethoxysilane accounting for 15wt% of MCM-41 mesoporous molecular sieve and γ-mercaptopropyltrimethoxysilane accounting for 4wt% of MCM-41 mesoporous molecular sieve were added to 20 parts by weight of toluene . Keep the temperature at 110°C, keep stirring, heat and reflux for 3 hours, filter after cooling, wash with a large amount of ethanol, and dry at 100°C for 5 hours to obtain a mesoporous molecular sieve grafted with aminosilane and mercaptosilane.

[0056] (2) Under nitrogen protection, add 1 part by weight of 3-(3,5-di-tert-butyl-4-hydroxyphenyl)acrylic acid and 1.4 parts by weight of thionyl chloride into 30 parts by weight of chloroform, at 50°C Heating and reacting for 8 hours, and distilling under reduced pressure to obtain 3-(3,5-di-tert-butyl-4-hydroxyphenyl)acryloyl chloride.

[0057] (3) Add 1 part by weight of mesoporous molec...

Embodiment 2

[0060] (1) 1 part by weight of SBA-15 mesoporous molecular sieve (with a specific surface area of ​​1100 m 2 / g), 3-aminopropyltriethoxysilane accounting for 10wt% of SBA-15 mesoporous molecular sieve and γ-mercaptopropyltriethoxysilane accounting for 6wt% of SBA-15 mesoporous molecular sieve were added to 20 parts by weight in toluene. Keep the temperature at 110°C, keep stirring, heat and reflux for 3 hours, filter after cooling, wash with a large amount of ethanol, and dry at 100°C for 5 hours to obtain a mesoporous molecular sieve grafted with aminosilane and mercaptosilane.

[0061] (2) Under nitrogen protection, add 1 part by weight of 3,5-di-tert-butyl-4-hydroxybenzoic acid and 1.3 parts by weight of thionyl chloride into 25 parts by weight of chloroform, heat at 50°C for 8 hours, and reduce Pressure distillation to obtain 3,5-di-tert-butyl-4-hydroxybenzoyl chloride.

[0062] (3) Add 1 weight part of mesoporous molecular sieve grafted with aminosilane and mercaptosila...

Embodiment 3

[0065] (1) 1.5 parts by weight of SBA-16 mesoporous molecular sieve (with a specific surface area of ​​900 m 2 / g), γ-aminopropylmethyldiethoxysilane accounting for 5wt% of SBA-16 mesoporous molecular sieve and γ-mercaptopropylmethyldiethoxysilane accounting for 10wt% of SBA-16 mesoporous molecular sieve were added To 20 parts by weight of toluene. Keep the temperature at 110°C, keep stirring, heat and reflux for 3 hours, filter after cooling, wash with a large amount of ethanol, and dry at 100°C for 5 hours to obtain a mesoporous molecular sieve grafted with aminosilane and mercaptosilane.

[0066] (2) Under nitrogen protection, 1 weight part of 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propionic acid and 1.2 weight part of thionyl chloride were added to 25 weight parts of chloroform, 50 The reaction was heated at ℃ for 7h, and then distilled under reduced pressure to obtain 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionyl chloride.

[0067] (3) Add 1.5 parts by weight of mesopor...

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Abstract

The invention discloses a mesoporous molecular sieve modified anti-rutting agent and a preparation method thereof, wherein the anti-rutting agent comprises the following raw material components by weight: 45-55 parts of high-density polyethylene, 45-55 parts of low-density polyethylene, 10-30 parts of styrene-butadiene rubber, 10-30 parts of polypropylene, and 5-8 parts of a modified mesoporous molecular sieve, wherein the modified mesoporous molecular sieve is a mesoporous molecular sieve modified with aminosilane, mercaptosilane and hindered phenol type antioxidant, and the hindered phenol type antioxidant contains a carboxyl group. According to the present invention, with the anti-rutting agent, the rutting resistance and the low temperature performance of the asphalt concrete are significantly increased, and the anti-aging performance of the asphalt concrete is improved so as to prolong the service life of the road.

Description

technical field [0001] The invention relates to an anti-rutting agent and a preparation method thereof, in particular to a mesoporous molecular sieve modified anti-rutting agent and a preparation method thereof. Background technique [0002] With the continuous increase of traffic flow on high-grade highways, as well as the increasingly heavy load of transport vehicles and the channelization of traffic flow, rutting has become the main form of road surface damage, which seriously affects the comfort of road driving and the service life of roads. The research and application of high-performance modified asphalt has become an urgent requirement for pavement construction. [0003] At present, it is an effective means to prevent rutting by increasing the stiffness modulus of asphalt mixture. The techniques used in this technology mainly include the use of high-viscosity hard asphalt binders and the addition of natural asphalt or polyolefin additives to the asphalt mixture. Bec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/06C08L9/06C08L23/12C08K9/06C08K9/04C08K7/26C08L95/00
CPCC08L23/06C08L95/00C08L2201/08C08L2205/02C08L2205/025C08L2205/035C08L2207/062C08L2207/066C08L9/06C08L23/12C08K9/06C08K9/04C08K7/26C08K13/06
Inventor 宋乐春陈保莲范思远张静宁爱民李志军程国香
Owner CHINA PETROLEUM & CHEM CORP
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