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High-performance asphalt composition and preparation method thereof

A kind of asphalt composition, high-performance technology, applied in the direction of building structure, building components, building insulation materials, etc., can solve the problems of asphalt pavement easy to become hard and brittle, less polyimide addition, freeze-thaw loose, etc., to achieve Effects of improving thermal and chemical stability, high temperature resistance and stability, and improving elastic recovery ability

Inactive Publication Date: 2019-01-22
WUXI CHUANGCAI OPTICAL MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the existing asphalt pavement materials have poor temperature stability. In winter and other cold weather, the asphalt pavement tends to become hard and brittle and then cracks. injury, reducing road safety
For this, the patent document CN107285674 provides a kind of epoxy asphalt concrete with high anti-cracking liquid expansion agent, but this scheme is still based on epoxy asphalt, and the components are complicated, and the improvement effect is limited, and this scheme uses polycarboxylic acid Type anti-slump agent, its anti-rutting property is poor
[0004] On the other hand, there have been reports such as patent document CN105131619 that polyimide is added to asphalt components as a flame retardant. Excellent mechanical properties of amine materials

Method used

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  • High-performance asphalt composition and preparation method thereof
  • High-performance asphalt composition and preparation method thereof
  • High-performance asphalt composition and preparation method thereof

Examples

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Effect test

preparation example

[0033] The self-terminated trapezoidal polysiloxane-modified polyimide powder was prepared according to the following steps (1)-(4), wherein the raw materials, proportions, and reaction conditions are shown in Table 1.

[0034] (1) Dissolve the dianhydride in the solvent to prepare a dianhydride solution with a mass concentration of 5-10%, and add dropwise a diamine solution of the same solvent with a mass concentration of 5-10% to the solution, where the dianhydride and the two The molar ratio of amine is 1.0-1.1:1 to obtain a polyamic acid solution;

[0035] (2) Add 0.1 to 5% of the mass of the polyamic acid solution of the amino-containing ladder-shaped organosiloxane to make the reaction fully;

[0036] (3) The product of step (2) is prepared into a 5-80 μm thick amino-containing ladder-shaped organosiloxane modified polyimide film by solution casting, salivation, or solution extrusion;

[0037] (4) Cut the film to powder with 400-500 mesh. Among them, the self-blocking ladder-sh...

Embodiment

[0043] The products Z-1 to Z-5 in the above production examples are used as polyimide powder raw materials to prepare a pitch composition. The components and ratios are shown in Table 2 below.

[0044] (1) Mix auxiliaries, enhancers, and mineral materials uniformly before use;

[0045] (2) Heat the petroleum pitch to 125°C (or 120°C, 130°C), add the polyimide powder and the mixture of step (1), and stir for 5-10 minutes;

[0046] (3) Cool down to 65°C (or 60°C, 70°C), add tackifier, elastomer and stir again to evenly cool down to 50°C (or 45°C, 55°C) before construction.

[0047] Table 2

[0048]

[0049] Among them, in Table 2, "A" represents a mixture of limestone powder and quartz sand powder with a mass ratio of 1:1; "B" represents a mixture of limestone powder and quartz sand powder with a mass ratio of 2:1; "C" represents limestone A mixture of powder and fly ash powder with a mass ratio of 3:1; "D" represents a mixture of limestone powder and fly ash powder with a mass ratio of ...

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Abstract

The present invention relates to a high-performance asphalt composition and a preparation method thereof, wherein the high-performance asphalt composition comprises petroleum asphalt and polyimide powder accounting for 5-15% of the weight of the petroleum asphalt, and the polyimide powder has a particle size of 400-500 mesh, and is self-end-capping trapezoidal polysiloxane modified polyimide powder. According to the present invention, the high-performance asphalt composition has advantages of crack resistance, rutting resistance and flame retardancy, and cannot produce penetration or crackingin a low temperature and humid environment.

Description

Technical field [0001] The invention relates to the technical field of asphalt materials, in particular to a high-performance asphalt composition and a preparation method thereof. Background technique [0002] Asphalt is a widely used pavement structure cementing material in road engineering. It can form asphalt pavements with different structures after being proportioned with different mineral materials. Compared with ordinary cement pavement, asphalt pavement greatly improves the resistance to damage of the pavement, makes the pavement smooth, less sand and dust, impervious to water, and the pavement has good flexibility and better shock absorption when it comes in contact with automobile tires. Therefore, the asphalt pavement has good driving comfort and low noise. Asphalt pavement is currently the most widely used high-grade pavement. [0003] However, the existing asphalt pavement materials have poor temperature stability. In cold weather such as winter, the asphalt pavement ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L79/08
CPCC08L95/00C08L2205/035C08L79/08
Inventor 周浪孔鹏飞赵子刚陈玉净
Owner WUXI CHUANGCAI OPTICAL MATERIALS
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