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A kind of waste car tire rubber powder modified asphalt and preparation method thereof

A technology for modifying asphalt and car tires, which is applied in building components, building insulation materials, buildings, etc., can solve the problems of environmental pollution of waste car tires, poor high temperature thermal storage stability of rubber powder modified asphalt, etc. Improve storage stability, solve the effect of black

Active Publication Date: 2018-05-29
TIANJIN HI TECH ENVIRONMENT DEV CO LTD
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AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to overcome the deficiencies of the prior art, and propose a waste car tire rubber powder modified asphalt and a preparation method thereof, which can not only solve the environmental pollution problem caused by waste car tires, but also solve the problem of rubber powder modified asphalt. The problem of poor thermal storage stability at high temperature

Method used

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  • A kind of waste car tire rubber powder modified asphalt and preparation method thereof
  • A kind of waste car tire rubber powder modified asphalt and preparation method thereof
  • A kind of waste car tire rubber powder modified asphalt and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1-6

[0043] 1. Preparation of catalytically activated rubber powder

[0044] Prepare the catalytic activation rubber powder of embodiment 1-6 according to the components listed in table 1 and the consumption thereof, premix according to the above steps, and carry out activation treatment under the microwave radiation power and radiation time listed in table 1 , to obtain modified rubber powder.

[0045]

[0046] 2. Preparation of rubber powder modified asphalt

[0047] The modified asphalts of Examples 1-6 were prepared using the asphalt and the modified rubber powder prepared in Table 1 according to the components and dosages listed in Table 2, respectively.

[0048]

[0049]Rapidly heat the base asphalt to 185-190°C through a heat exchanger, add a certain proportion of the activated rubber powder prepared in Examples 1-6 into it, keep warm and pre-mix for 15 minutes in a pre-mixing tank, and then grind through a colloid mill One time, then enter the mixing and developing ...

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Abstract

The invention relates to waste-car tyre rubber powder modified asphalt and a preparing method thereof. The modified asphalt comprises matrix asphalt, a crosslinking agent, waste car tyre rubber powder, a softener, an activator and an antireducer. By utilization of microwave radiation, proper polar branch chains are introduced to molecular chains of the waste car tyre rubber powder and a net structure is opened, thus achieving activation and modification of the waste car tyre rubber powder, improving compatibility of waste shoe sole rubber and the matrix asphalt and storage stability, and relieving easy softening point attenuation during high-temperature storage.

Description

technical field [0001] The invention relates to a road pavement material in the field of highway engineering, in particular to a waste car tire rubber powder modified asphalt and a preparation method thereof. Background technique [0002] In recent years, the technology of rubber powder modified asphalt has developed rapidly, and the source of tire rubber powder, the key raw material for the preparation of rubber powder modified asphalt, has also attracted much attention. Currently, most of the rubber powder used in rubber powder modified asphalt comes from waste heavy-duty radial tires. Tires, not waste radial tires—waste car tires are mostly used in local oil refining, causing waste of resources and environmental pollution. In order to promote the rational application of waste car tire resources in asphalt, it is particularly important to actively find environmentally friendly utilization methods. [0003] Heavy-duty radial tires are mainly composed of natural rubber and a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C08L19/00C08J11/28
CPCC08J11/28C08J2319/00C08L95/00C08L19/003Y02W30/62
Inventor 李翠红余强鄂志英
Owner TIANJIN HI TECH ENVIRONMENT DEV CO LTD
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