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A kind of preparation method of silane coupling agent modified road petroleum asphalt

A technology of road petroleum asphalt and silane coupling agent, which is applied in the direction of building components, building insulation materials, buildings, etc., can solve the problems of affecting the water stability of asphalt mixture, poor adhesion of acid stones, poor durability, etc., to achieve modification Effects of cohesiveness, increased consistency, and improved softening point

Inactive Publication Date: 2011-11-30
SHANDONG JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The main chemical components of petroleum asphalt are saturated, aromatic, colloid, asphaltenes and waxes. It has good temperature stability and climate stability, but it has the disadvantage of poor adhesion to acidic stone, which seriously affects the quality of asphalt mixture. Therefore, the durability of acidic stone mixed with petroleum asphalt as a pavement material is extremely poor

Method used

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  • A kind of preparation method of silane coupling agent modified road petroleum asphalt
  • A kind of preparation method of silane coupling agent modified road petroleum asphalt
  • A kind of preparation method of silane coupling agent modified road petroleum asphalt

Examples

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Effect test

Embodiment 1

[0024] A preparation method of silane coupling agent modified road petroleum asphalt, the raw materials are silane coupling agent and road petroleum asphalt; the steps are as follows:

[0025] The dosage of silane coupling agent is 0.25% of the asphalt mass, and it is added to the hot melt asphalt at 150 °C, mechanically stirred for 15 minutes with high-speed shearing equipment, the revolution is 10000 r / min, and then placed in an 80 °C oven for development 2 hours. Obtain modified road petroleum asphalt.

[0026] The obtained modified road petroleum asphalt was reheated to 150 ℃, and the adhesion test between the modified asphalt and granite stone was carried out. Test result: Adhesion grade reaches 4 + class.

Embodiment 2

[0028] A preparation method of silane coupling agent modified road petroleum asphalt, the raw materials are silane coupling agent and road petroleum asphalt; the preparation method is the same as that in Example 1, the difference is that the dosage of silane coupling agent is asphalt 0.30% of the mass, the test result: the adhesion level reaches 5. Scanning electron microscope (SEM) pictures of silane coupling agent-modified asphalt and granite fines mortar, via figure 2 photo with figure 1 The scanning electron microscope (SEM) photos of unmodified common matrix asphalt and granite fine material mortar show that the granite matrix asphalt mortar is loose and scattered in structure, with many pores, and the silane coupling agent modified granite asphalt mortar is filamentous entanglement. Structure, dense, few holes. It shows that the adhesion interface between silane coupling agent modified asphalt and granite is improved, which is beneficial to improve the road properties...

Embodiment 3

[0031] A preparation method of silane coupling agent modified road petroleum asphalt, the raw materials are silane coupling agent and road petroleum asphalt; the preparation method is the same as that in Example 1, the difference is that the dosage of silane coupling agent is: 0.35% of asphalt mass, test result: Adhesion grade up to 5 - class.

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Abstract

A preparation method of silane coupling agent modified road petroleum asphalt, adding 0.25% to 0.35% of asphalt quality silane coupling agent to 150°C hot-melt asphalt, then using high-speed shearing and stirring for 15 minutes, and placing it at 80°C Grow in an oven for 2 hours, or manually stir for 30 minutes and place in an oven at 80°C for 30 minutes, and so on. The total preparation time is 2 to 4 hours. The silane coupling agent modified road petroleum asphalt prepared by the invention can significantly improve the adhesion between granite and other acidic stones and the petroleum asphalt, and improve the adhesion level from 2 before modification to 5 after modification. The invention has the characteristics of simple preparation process and obvious improvement effect of road petroleum asphalt.

Description

technical field [0001] A preparation method of silane coupling agent-modified road petroleum asphalt belongs to the technical field of composite road asphalt. Background technique [0002] The main chemical components of petroleum asphalt are saturates, aromatics, colloids, asphaltenes and waxes, which have good temperature stability and climate stability, but have the disadvantage of poor adhesion with acid stones, which seriously affects the asphalt mixture. Therefore, the durability of acid stone mixed with petroleum asphalt used as pavement material is extremely poor. [0003] Coupling agent is a kind of surface modifier, which is mainly used in plastics, rubber, adhesives and other polymer material industries. The technology of adding coupling agent to resin or treating inorganic filler with coupling agent occupies a great place in the field of polymer matrix composite materials. very important position. In the study, we boldly borrowed the characteristics of coupling...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08K5/544C08K5/5435
Inventor 张爱勤宫本辉王彦敏李晶
Owner SHANDONG JIAOTONG UNIV
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