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Waster rubber powder composite modified asphalt and preparation method thereof

A technology of composite modified asphalt and modified asphalt, which is applied in the direction of building components, building insulation materials, buildings, etc., can solve the problems of low mechanical properties, poor compatibility, poor stability, etc., to improve dispersion performance and wear resistance , the effect of preventing self-vulcanization process

Inactive Publication Date: 2017-08-18
ANHUI GVG NEW MATERIAL CO LTD
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Problems solved by technology

[0007] The purpose of the present invention is to make up for the defects of the prior art, to provide a waste rubber powder composite modified asphalt and a preparation method thereof, to solve the problem of poor compatibility, poor stability, and dispersion in the existing simple waste rubber powder modified asphalt. Defects such as poor performance and low mechanical properties

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  • Waster rubber powder composite modified asphalt and preparation method thereof
  • Waster rubber powder composite modified asphalt and preparation method thereof
  • Waster rubber powder composite modified asphalt and preparation method thereof

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Embodiment Construction

[0028] A waste rubber powder composite modified asphalt, the raw materials are composed of the following materials according to the weight ratio: waste rubber powder 18-32%, matrix asphalt 58-72%, carbon nanotubes 1-3%, white carbon black 5-10%, High-density polyethylene 3-7%, sulfur 2-4%, stearic acid 2-7%, zinc oxide 5-8%.

[0029] The particle size of waste rubber powder is 10-20 mesh, and the base asphalt is 90# asphalt.

[0030] A preparation method of waste rubber powder composite modified asphalt, comprising the following steps:

[0031] (1) The waste rubber powder recovered from waste tires and base asphalt are preliminarily mixed and preheated by a feeding device, and then put into a double-rotor continuous mixer equipped with a microwave generating device and subjected to high-speed shearing, stretching and microwave After desulfurization modified asphalt works together, waste rubber powder mixed modified asphalt is obtained;

[0032] (2) carbon nanotubes and white...

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Abstract

The invention discloses waster rubber powder composite modified asphalt and a preparation method thereof. The waster rubber powder composite modified asphalt is prepared from, by weight, 18-32% of waste rubber powder, 58-72% of matrix asphalt, 1-3% of carbon nanotubes, 5-10% of white carbon black, 3-7% of high-density polyethylene, 2-4% of sulfur, 2-7% of stearic acid and 5-8% of zinc oxide. The preparation method includes: mixing waste rubber powder with matrix asphalt to obtain waster rubber powder mixed matrix asphalt through treatment; subjecting carbon nanotubes and white carbon black to reaction to obtain modified white carbon black; subjecting an obtained product to treatment along with high-density polyethylene, delivering to a reactor, adding sulfur, zinc oxide and stearic acid, well mixing, and stably developing and treating for a period of time at a certain temperature to obtain the waster rubber powder composite modified asphalt. The waster rubber powder composite modified asphalt prepared according to the method is excellent in comprehensive performance and applicable to fields of waterproof coils, road asphalt, special rubber products and the like.

Description

[0001] Technical field: [0002] The invention relates to the technical field of rubber reuse, and mainly relates to waste rubber powder composite modified asphalt and a preparation method thereof. [0003] Background technique: [0004] An important purpose of the recycling of waste tires is to crush and separate them and grind them into rubber powder to modify asphalt. Since waste tires contain natural rubber, styrene-butadiene rubber and other high-molecular polymers and a large amount of carbon black, fillers, antioxidants, treatment oil, etc., and the rubber contained in them is a kind of high-molecular network structure material, under normal conditions It is an elastomer with huge cohesion. If it can be uniformly dispersed in asphalt, it can improve the compressive capacity of asphalt. Among them, carbon black and fillers can reinforce asphalt, and some additives such as antioxidants can resist oxidation of asphalt. , so the prepared rubber-modified asphalt can not only...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L19/00C08L23/06C08K13/06C08K9/10C08K3/36C08K3/06C08K5/09C08K3/22B29B7/00
CPCC08L95/00B29B7/002C08K2003/2296C08K2201/011C08L2205/03C08L2207/062C08L2207/24C08L2312/00C08L19/003C08L23/06C08K13/06C08K9/10C08K3/36C08K3/06C08K5/09C08K3/22
Inventor 葛九敢李婷蒋化瑜唐帆蒋水金
Owner ANHUI GVG NEW MATERIAL CO LTD
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