Premix and copolymerization type asphalt mixture compound modifier and preparation method thereof

A compound modifier and asphalt mixture technology, which is applied in building insulation materials, building components, buildings, etc., can solve the problems of limited modification effect and high cost, and achieve the goals of improving compatibility, increasing anti-oxidation and reducing costs Effect

Inactive Publication Date: 2017-01-04
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Through the compounding of SBS, polyethylene and waste rubber, the problem of li

Method used

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  • Premix and copolymerization type asphalt mixture compound modifier and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The polyethylene particles (high-density polyethylene particles, low-density polyethylene particles, linear low-density polyethylene particles are mixed at a ratio of 1:1:1) and glycidyl methacrylate are weighed at a mass ratio of 100:5. Mechanically stir and mix evenly, and react at 90° C. for 1 hour to prepare modified polyethylene particles.

[0019] Mix waste rubber powder (ordinary waste tires ground into 50 mesh rubber powder) and naphthenic rubber oil at a mass ratio of 100:5, and mechanically stir at 90°C for 50 minutes to obtain activated modified waste rubber powder.

[0020] Preparation of premixed copolymerized asphalt mixture composite modifier (10Kg): weigh 70% of the above-mentioned modified polyethylene particles, 20% of activated modified waste rubber powder, and 10% of SBS asphalt modifier according to weight ratio. Mechanically mix evenly at room temperature, add to the twin-screw extruder, control the reaction temperature at about 180°C, melt and ext...

Embodiment 2

[0022] The polyethylene particles (high-density polyethylene particles, low-density polyethylene particles, linear low-density polyethylene particles are mixed at a ratio of 1:1:1) and glycidyl methacrylate are weighed at a mass ratio of 100:5. Mechanically stir and mix evenly, and react at 90° C. for 1 hour to prepare modified polyethylene particles.

[0023] Mix waste rubber powder (ordinary waste tires ground into 50 mesh rubber powder) and naphthenic rubber oil at a mass ratio of 100:5, and mechanically stir at 90°C for 50 minutes to obtain activated modified waste rubber powder.

[0024] Preparation of premixed copolymerized asphalt mixture composite modifier (10Kg): weigh 65% of the above-mentioned modified polyethylene particles, 25% of activated modified waste rubber powder, and 10% of SBS asphalt modifier according to weight ratio. Mechanically mix evenly at room temperature, add to the twin-screw extruder, control the reaction temperature at about 200°C, melt and ext...

Embodiment 3

[0026] The polyethylene particles (high-density polyethylene particles, low-density polyethylene particles, linear low-density polyethylene particles are mixed at a ratio of 1:1:1) and glycidyl methacrylate are weighed at a mass ratio of 100:5. Mechanically stir and mix evenly, and react at 100° C. for 1 hour to prepare modified polyethylene particles.

[0027] Mix waste rubber powder (ordinary waste tires ground into 100 mesh rubber powder) and naphthenic rubber oil at a mass ratio of 100:5, and mechanically stir at 100°C for 60 minutes to obtain activated modified waste rubber powder.

[0028] Preparation of premixed copolymerized asphalt mixture composite modifier (10Kg): weigh 65% of the above-mentioned modified polyethylene particles, 20% of activated modified waste rubber powder, and 15% of SBS asphalt modifier according to weight ratio. Mechanically mix evenly at room temperature, add to the twin-screw extruder, control the reaction temperature at about 200°C, melt and ...

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Abstract

The invention relates to a premix and copolymerization type asphalt mixture compound modifier. The compound modifier is prepared from, by weight, 50-70% of modified polyethylene particles, 20-30% of activated modified waste rubber powder and 10-20% of SBS asphalt modifier. The modified polyethylene particles are prepared by evenly mixing polyethylene particles and glycidyl methacrylate according to the mass ratio of 100:5 and conducting mechanical stirring reaction for 1 h at 90-100 DEG C; the activated modified waste rubber powder is prepared by mixing waste rubber powder and naphthenic rubber oil according to the mass ratio of 100:5 and conducting mechanical stirring for 50-60 min at 90-100 DEG C; the SBS asphalt modifier is a styrene-butadiene-styrene triblock copolymer. The problem that a simple polymer is simplex in modification effect is solved, all performance of the asphalt is comprehensively improved, and meanwhile the polymer modification cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of petrochemical industry, and relates to a compound modifier for premixed copolymerized asphalt mixture and a preparation method thereof. Background technique [0002] In recent years, with the continuous deepening of reform and opening up, the construction of high-grade highways in my country has developed at an unprecedented speed and has made remarkable achievements. By the end of 2015, the mileage of my country's highways opened to traffic reached 111,900 kilometers, achieving a historic breakthrough that ranked first in the world in mileage opened to traffic. And the data shows that more than 95% of the highways built in my country use asphalt pavement. Asphalt concrete material used in asphalt pavement is a typical viscoelastic-plastic material, and the influence of temperature and load on its mechanical properties is very significant. Therefore, for asphalt pavement, under the joint action of traffi...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08L51/06C08L19/00C08L91/00C08L53/02C08F255/02C08F220/32
CPCC08F255/02C08L51/06C08L95/00C08L2201/08C08L2205/035C08L2555/80C08L2555/84C08L19/003C08L91/00C08L53/02C08F220/325
Inventor 李相国笪俊伟刘卓霖胡赞明添尹轮任钊锋
Owner WUHAN UNIV OF TECH
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