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High-viscosity asphalt modifying agent, preparation method and preparation method of modified asphalt

An asphalt modifier and modified asphalt technology are applied in the fields of high-viscosity asphalt modifier, preparation, and preparation of modified asphalt, which can solve the problems of poor low-temperature stability, poor low-temperature performance, and low asphalt viscosity of modified asphalt. Achieve the effect of good solubility, low cost and improved service life

Inactive Publication Date: 2016-08-03
JIANGSU ZHONGLU NEW MATERIAL SCI & TECH DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patent CN200510023227.9 records a high-viscosity asphalt modifier, which is composed of SBS, petroleum resin, and diatomaceous earth. Although the high-temperature performance is improved, the low-temperature performance is poor
Although these technologies have solved the problems of high-viscosity asphalt to a certain extent, these asphalt modifiers or asphalt modification methods still cannot fully solve the problems of low viscosity of modifiers to asphalt and poor low temperature stability of modified asphalt

Method used

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  • High-viscosity asphalt modifying agent, preparation method and preparation method of modified asphalt

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Effect test

Embodiment 1

[0026] The composition of the high-viscosity asphalt modifier is as follows: 42 wt% of thermoplastic styrene-butadiene rubber polymer, which is a mixture of linear and star-shaped, with a weight-average molecular weight of 300,000; 26 wt% of modified styrene-butadiene rubber wherein polybutadiene Content 34%; Regenerated polyethylene 8wt%, is low-density linear polyethylene; Regenerated ethylene-vinyl acetate copolymer 18wt%, the content of vinyl acetate in regenerated ethylene-vinyl acetate copolymer is 48%; Sulfur crosslinking agent 3wt% and Diaryl secondary amine antioxidant stabilizer 3wt%.

[0027] The preparation method of high-viscosity asphalt modifier, comprises the steps:

[0028] (1) Mix each component evenly according to the corresponding proportion, add it to a pulverizer, select a liquid nitrogen tank to cool down with liquid nitrogen, and carry out low-temperature pulverization;

[0029] (2) Put the pulverized mixed components into the screw extruder through th...

Embodiment 2

[0042] The composition of the high-viscosity bitumen modifier is as follows: thermoplastic styrene-butadiene rubber polymer 50wt% part, thermoplastic styrene-butadiene rubber is two kinds of mixtures of linear and star, weight average molecular weight is 400,000; modified styrene-butadiene rubber 20wt% part, molecular weight 200,000, of which polybutadiene content is 40%; recycled polyethylene is 12wt%, recycled polyethylene is high-density linear polyethylene, recycled ethylene-vinyl acetate copolymer is 15wt%, and the content of vinyl acetate in recycled ethylene-vinyl acetate copolymer is The content is 60%; sulfur crosslinking agent 2wt% and p-phenylenediamine antioxidant stabilizer 1wt%.

[0043] The preparation method of high-viscosity asphalt modifier, comprises the steps:

[0044] (1) Mix each component evenly according to the corresponding proportion, add it to a pulverizer, select a liquid nitrogen tank to cool down with liquid nitrogen, and carry out low-temperature...

Embodiment 3

[0058] The composition of the high-viscosity asphalt modifier is as follows: thermoplastic styrene-butadiene rubber polymer 53wt% part, thermoplastic styrene-butadiene rubber is two kinds of mixtures of linear and star, the weight average molecular weight is 350,000; modified styrene-butadiene rubber 30wt% part, modified The molecular weight of styrene-butadiene rubber is 400,000, and the content of polybutadiene is 45%; the recycled polyethylene is 5wt%, and the recycled polyethylene is linear low-density linear polyethylene; the recycled ethylene-vinyl acetate copolymer is 8wt%, and the recycled ethylene-vinyl acetate The content of vinyl acetate in the copolymer is 50%, the sulfur crosslinking agent 2wt%, and the aldehyde-amine condensate type antioxidant stabilizer 2wt%.

[0059] The preparation method of high-viscosity asphalt modifier, comprises the steps:

[0060] (1) Mix each component evenly according to the corresponding proportion, add it to a pulverizer, select a l...

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Abstract

The invention discloses a high-viscosity asphalt modifier, a preparation method and a preparation method of modified asphalt, comprising the following components in mass fractions: 40-70 parts of thermoplastic styrene-butadiene rubber polymer, 15-45 parts of modified styrene-butadiene rubber 5-20 parts of recycled polyethylene, 10-45 parts of recycled ethylene-vinyl acetate copolymer, 0-5 parts of crosslinking agent and 0-5 parts of stabilizer. Through the specific ratio and processing technology of the present invention, the high-viscosity asphalt modifier obtained after compounding can improve the high and low temperature performance and aging resistance of the base asphalt, the preparation process is simple and economical, and it is further applied to the paving of drainage asphalt pavement It can prolong the service life of drainage asphalt pavement.

Description

technical field [0001] The invention relates to the preparation of an asphalt additive, in particular to a high-viscosity asphalt modifier, a preparation method and a preparation method of modified asphalt. Background technique [0002] Drainage asphalt pavement, also known as permeable asphalt pavement or porous asphalt pavement, refers to a new type of asphalt concrete surface layer with a void rate of about 15% to 25% after compaction and can form drainage channels inside the mixture. Its essence is a single particle size Open-graded asphalt mixture with skeleton-void structure is formed by crushed stones according to the mechanism of embedding and extrusion. Large-void asphalt mixture is used as the surface layer to penetrate the rainfall into the drainage functional layer and drain the rainwater horizontally through the layer, thus eliminating the belt The road surface water film that brings many adverse effects of driving can significantly improve the safety and comfor...

Claims

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Application Information

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IPC IPC(8): C08L9/06C08L23/08C08L23/06C08L31/04C08K3/06
CPCC08L9/06C08L2201/08C08L2205/025C08L2205/035C08L2207/062C08L2207/20
Inventor 潘友强李芳芳陈李峰耿磊
Owner JIANGSU ZHONGLU NEW MATERIAL SCI & TECH DEV CO LTD
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