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Anti-stripping agent with resistance to ultraviolet aging for asphalt and preparation method of anti-stripping agent

A technology of anti-ultraviolet aging and anti-stripping agent, which is applied in the field of asphalt anti-stripping agent with anti-ultraviolet aging performance and its preparation field, can solve the problems of poor anti-ultraviolet aging performance and poor thermal stability of anti-stripping agent, and achieve improvement Anti-ultraviolet aging performance, improved anti-ultraviolet aging efficiency, and excellent light stability

Active Publication Date: 2019-11-15
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In summary, although the existing technology can improve the anti-stripping performance of asphalt to a certain extent, there are problems of poor thermal stability of the anti-stripping agent and poor anti-ultraviolet aging performance.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] (1) 100 parts by weight of MCM-41 mesoporous molecular sieve (with a specific surface area of ​​1000 m 2 / g), 5 parts by weight of γ-chloropropyltrimethoxysilane were added to 2000 parts by weight of toluene. Constant temperature at 110°C, continuous stirring, heating to reflux for 3h, cooling to room temperature, filtering, washing with ethanol, and drying at 100°C for 5h to obtain a mesoporous molecular sieve grafted with chlorosilane;

[0057] (2) Add the chlorosilane-grafted mesoporous molecular sieve obtained in step (1) and 9 parts by weight of 2,2,6,6-tetramethylpiperidinamine into 2000 parts by weight of ethanol, and keep the temperature at 78°C , continuously stirring, heating to reflux for 6 hours, cooling to room temperature, filtering, washing with ethanol, and drying at 100°C for 8 hours to obtain a light stabilizer-modified mesoporous molecular sieve;

[0058] (3) Add the light stabilizer modified mesoporous molecular sieve obtained in step (2) and 4.8 pa...

Embodiment 2

[0063] (1) 100 parts by weight of SBA-15 mesoporous molecular sieve (with a specific surface area of ​​1200 m 2 / g), 6 parts by weight of γ-chloropropyltriethoxysilane were added to 2000 parts by weight of toluene. Constant temperature at 115°C, stirring continuously, heating to reflux for 2.5h, cooling to room temperature, filtering, washing with ethanol, drying at 100°C for 3h, to obtain mesoporous molecular sieve grafted with chlorosilane;

[0064] (2) The chlorosilane-grafted mesoporous molecular sieve obtained in step (1) and 10 parts by weight of bis[2,2,6,6-tetramethyl-4-piperidinyl] sebacate were added to 2000 In ethanol by weight, keep the temperature at 85°C, keep stirring, heat and reflux for 7h, cool to room temperature, filter, wash with ethanol, and dry at 110°C for 8h to obtain a light stabilizer-modified mesoporous molecular sieve;

[0065] (3) Add the light stabilizer modified mesoporous molecular sieve obtained in step (2) and 6.4 parts by weight of the firs...

Embodiment 3

[0070] (1) 100 parts by weight of SBA-16 mesoporous molecular sieve (with a specific surface area of ​​1060 m 2 / g), 7 parts by weight of chloromethyltriethoxysilane were added to 3000 parts by weight of toluene. Constant temperature at 120°C, stirring continuously, heating to reflux for 2.5h, cooling to room temperature, filtering, washing with ethanol, and drying at 110°C for 4h to obtain mesoporous molecular sieve grafted with chlorosilane;

[0071] (2) The chlorosilane-grafted mesoporous molecular sieve obtained in step (1) and 11 parts by weight of bis[2,2,6,6-tetramethyl-4-piperidinyl]isophthalamide were added to In 2000 parts by weight of ethanol, keep the temperature at 80°C, keep stirring, heat and reflux for 7h, cool to room temperature, filter, wash with ethanol, and dry at 100°C for 8h to obtain a light stabilizer-modified mesoporous molecular sieve;

[0072] (3) Add the light stabilizer modified mesoporous molecular sieve obtained in step (2) and 6.2 parts by wei...

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Abstract

The invention discloses an anti-stripping agent with resistance to ultraviolet aging for asphalt and a preparation method of the anti-stripping agent. The anti-stripping agent for the asphalt comprises the following raw material components, in parts by weight: 100 parts of a mesoporous molecular sieve, 5-16 parts of a light stabilizer, 8-22 parts of an acyl chlorided antioxidant, 7-14 parts of aminosilane, 9-12 parts of long-chain organic silane and 4-9 parts of chlorosilane. The preparation method of the anti-stripping agent for the asphalt comprises the following steps: grafting the chlorosilane onto the surface of the mesoporous molecular sieve, and linking the light stabilizer to the surface of the mesoporous molecular sieve by reacting with the chlorosilane; and respectively graftingthe long-chain organosilane and the aminosilane onto the surface of the mesoporous molecular sieve, and respectively reacting the light stabilizer and the aminosilane with the acyl chlorided antioxidant to be linked to the surface of the mesoporous molecular sieve. The anti-stripping agent for the asphalt provided by the invention not only can significantly improve the anti-stripping performance of the asphalt, but also greatly improves the resistance to ultraviolet aging, enables the asphalt to have excellent photostability, and has very good compatibility with the asphalt.

Description

technical field [0001] The invention relates to an asphalt anti-stripping agent and a preparation method thereof, in particular to an asphalt anti-stripping agent with anti-ultraviolet aging performance and a preparation method thereof. Background technique [0002] Asphalt pavement is one of the most widely used traffic pavements at present, but with the increase of use time, different types of diseases will appear, among which water damage is one of the main forms of early damage to asphalt pavement, which seriously affects the performance of asphalt pavement. Improving the adhesion between asphalt and aggregates is an effective way to solve the water damage of asphalt pavement. At present, there are two main methods, one is to replace part of the mineral powder with slaked lime or cement, and the other is to add anti-stripping agent to the asphalt. Among them, adding slaked lime or cement needs to increase feeding and metering equipment, etc., which increases the complexi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/42C04B24/12C04B14/04C04B103/60
CPCC04B40/0039C04B14/047C04B24/128C04B24/42C04B2103/608
Inventor 宋乐春陈保莲范思远张静李臣泽程国香宁爱民李志军
Owner CHINA PETROLEUM & CHEM CORP