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Preparation process of high-index SBS modified asphalt

A modified asphalt and preparation technology, which is applied in building components, building insulation materials, buildings, etc., can solve the problems of damaged asphalt quality and affecting the service life of asphalt, achieve high oil filling rate, overcome adverse effects, and inhibit segregation Effect

Inactive Publication Date: 2019-03-08
浙江威克新材料科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is an organic gelling material that is waterproof, moisture-proof and anti-corrosion. It is often used on concrete pavements. However, there are still many problems in the production of asphalt, which leads to damage to the quality of asphalt and affects the service life of asphalt.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The invention provides a high-index SBS modified asphalt preparation process, comprising the following steps:

[0025] A. Refining petroleum colloids through various petroleum refining processing equipment to obtain base asphalt;

[0026] B. Add waste rubber powder to base asphalt and mix, the mixing mass ratio of waste rubber powder and base asphalt is 1:20, then pass the mixed mixed asphalt into the agitator, and stir through the agitator;

[0027] C. Use styrene and butadiene as monomer raw materials, cyclohexane as solvent, n-BuLi as initiator, THF as activator, non-terminating anionic polymerization reaction, and SiCl4 as coupling agent. Anti-aging agent forms SBS modifier;

[0028] D. Put the SBS modifier through high-temperature mixing and colloid mill grinding, so that the modifier particles reach a smaller order of magnitude, and then pass it into the agitator through the electric pump, and strictly control the SBS modifier through the first switch valve. Con...

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PUM

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Abstract

The invention discloses a preparation process of high-index SBS modified asphalt. The preparation process includes the following steps: A, preparing matrix asphalt; B, mixing the asphalt; C, preparingan SBS modifier; D, preparing the SBS modified asphalt; E, putting the SBS modified asphalt in a culture tank; F, shearing the SBS modified asphalt into blocks by a high-speed shearing machine. The preparation process has the advantages that through strict control of the mass ratio of the SBS modifier to the mixed asphalt, the dosage is accurately controlled, the automation degree is high, the adverse effects brought by large bulk density change of the asphalt and manual weighing of the modifier are overcome, the temperature-adjustable culture tank is provided to enable the mixture to continuously develop at the most suitable temperature, and polymers are evenly distributed in a discrete phase state in a continuous-phase asphalt medium to form a stable and elastic network structure, so that the modification effect is improved, and segregation is suppressed.

Description

technical field [0001] The invention relates to asphalt preparation technology, in particular to high index SBS modified asphalt preparation technology. Background technique [0002] Asphalt is a dark brown complex mixture composed of hydrocarbons of different molecular weights and their non-metallic derivatives. It is a kind of high-viscosity organic liquid. It is liquid with a black surface and is soluble in carbon disulfide. It is an organic gelling material that is waterproof, moisture-proof and anti-corrosion. It is often used on concrete pavements. However, there are still many problems in the production of asphalt, which leads to damage to the quality of asphalt and affects the service life of asphalt. Contents of the invention [0003] The technical problem to be solved in the present invention is to overcome the defects of the prior art, provide a high-index SBS modified asphalt preparation process, strictly control the mass ratio of the SBS modifier to the mixed ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L53/02C08L19/00C08F297/04
CPCC08F297/04C08L95/00C08L2205/03C08L2207/24C08L53/02C08L19/003
Inventor 郭连桂张小钢
Owner 浙江威克新材料科技发展有限公司