A kind of preparation method of waste rubber pyrolysis conversion modified asphalt

A technology for modifying asphalt and waste rubber, used in building components, building insulation materials, buildings, etc., can solve the problems of large amount of asphalt mixing, difficult dispersion and settlement of rubber powder, and achieve excellent high and low temperature performance and improve compatibility. performance, improve performance
CN104830076BActive Publication Date: 2017-05-31JIANGYIN BAO LI ASPHALT CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
JIANGYIN BAO LI ASPHALT CO LTD
Publication Date
2017-05-31

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Abstract

The invention relates to a method for preparing rubber waste cracking converted modified asphalt. The method mainly comprises the following steps: allowing rubber waste powder to go through a normal pressure double helix device, carrying out high temperature processing at 260-360DEG C for 10-30min to realize cracking conversion of the rubber waste in order to form a viscous asphalt material, adding the viscous asphalt material to heavy duty asphalt, stirring to obtain a rubber waste cracking converted asphalt mother liquor, adding 1-6wt% of SBS, and carrying out shearing dispersion to obtain the high performance modified asphalt. An apparatus for preparing cracking converted rubber has the characteristics of low cost, high conversion efficiency, environmental protection and safety, and the modified asphalt obtained through cracking converted rubber and heavy duty asphalt mixing and SBS modification has the characteristics of stable heat storage, excellent high and low temperature performances and excellent ultraviolet resistance, and makes the rubber waste have good economic and environmentally-friendly benefits.
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Description

technical field

[0001] The invention relates to the field of road asphalt modification, in particular to a preparation method of waste rubber cracking conversion modified asphalt. Background technique

[0002] As a cementing material, asphalt has the advantages of waterproof, insulation, corrosion resistance, etc., and has a good bonding effect with stone ore materials. It has been widely used as road construction materials for a long time. In recent years, with the increase in traffic volume and traffic load, people have put forward more stringent requirements for road paving asphalt materials, but ordinary asphalt is prone to rutting at high temperature, easy to crack at low temperature, easy to age, and has a short life, which cannot fully meet the actual situation. need. Generally, polymers are added and dispersed into asphalt to prepare polymer-modified asphalt, which can effectively improve the high and low temperature performance of asphalt.

[0003] Among the polym...

Claims

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