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Process for preparing SBS modified asphalt

A technology for modified asphalt and matrix asphalt, which is applied in the chemical processing of tar asphalt/petroleum asphalt/natural asphalt, building components, building insulation materials, etc. , recovery of high energy consumption, to achieve the effect of improving compatibility, easy operation, poor thermal storage

Active Publication Date: 2006-05-24
PETROCHINA CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Overcome the existing solvent method to prepare SBS modified asphalt, which has high recovery energy consumption and high manufacturing cost in the recovery of benzene solvents; due to solvent volatilization, it is harmful to human health and the environment; the prepared SBS modified asphalt is stored in heat lack of sex

Method used

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  • Process for preparing SBS modified asphalt

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Example 1 In a container with a stirrer, weigh 90 g of peptizer minus four-line extracted oil, 30 g of styrene-butadiene-styrene thermoplastic elastomer produced by Yueyang Petrochemical Company, and stir at 160 ° C for 4.5 h, Make a mortar mother liquor containing 25% SBS, then mix the mother liquor with 480g of base asphalt under stirring conditions at 160°C, heat up after mixing and stir at 210°C±5°C for 2.5h to obtain a uniform and stable colloidal structure SBS modified asphalt products.

[0018] See Table 2 for the formulations of Examples 1-5; see Table 3 for the property analysis of modified asphalt products of Examples 1-5.

[0019] sample

[0020] Sample

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Abstract

The invention belongs to manufacture process for SBS modificatioin asphalt. The feature is that: making SBS mucilage mother liquor and the raw materials are 10-20% sol solvent, 4-6% styrene-butadiene-styrene thermoplastic elastomer; adding the SBS mucilage mother liquor into ground substance asphalt that the temperature is 200-300 degree centigrade, fully whisking and making the SBS mucilage mother liquor to react with ground substance asphalt to finish the manufacture for storage modification asphalt. The effect is that: the compatibility of SBS and the asphalt would be improved; the harm to human health and environment would be conquered; and it could be directly used as the effective constituent of modification asphalt.

Description

technical field [0001] The invention relates to the production field of modified asphalt, in particular to a preparation method of SBS modified asphalt. Background technique [0002] Modification of asphalt is the requirement of asphalt pavement for the development of modern road traffic. Modern roads, especially high-grade roads, are characterized by large traffic volume, heavy load and fast speed, which put forward higher and higher quality requirements for asphalt. Ordinary petroleum asphalt is difficult to meet the requirements, so the petroleum asphalt must be modified. Modified asphalt is mainly composed of modifiers and base asphalt. Commonly used modifiers include styrene-butadiene-styrene thermoplastic elastomer (SBS), styrene-butadiene rubber (SBR), polyethylene (PE) and other types. Modifier. Since styrene-butadiene-styrene thermoplastic elastomer (SBS) has the characteristics of both rubber and resin modifiers, it can improve the high and low temperature perfor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10C3/02C08L25/10C08L95/00
Inventor 罗来龙李剑新蔺兰雄陶立新杨克红王金勤高华
Owner PETROCHINA CO LTD
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