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Direct addition type rubber powder composite asphalt mixture modifier and preparation method thereof

A technology of composite asphalt and mixture, which can be used in building thermal insulation materials, building components, buildings, etc., and can solve the problem of difficulty in recycling waste polymers.

Inactive Publication Date: 2012-10-03
深圳市科中大交通建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The invention patent with the patent publication number CN102311592A proposes a preparation method of waste rubber powder and polyolefin blend material, which improves the high and low temperature performance and anti-rutting performance of modified asphalt, and solves the problem of difficult recycling of waste polymers

Method used

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  • Direct addition type rubber powder composite asphalt mixture modifier and preparation method thereof
  • Direct addition type rubber powder composite asphalt mixture modifier and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Mix 20% of 20-mesh waste rubber powder and 57% polyethylene in a high-speed mixer, then add 5% of natural asphalt and 15% of petroleum resin, and continue to mix evenly; finally add 3% of calcium carbonate, mix The homogeneous material is put into a twin-screw extruder, heated to 140-180°C to form a molten mixture and then extruded; during the water cooling process, it is kept in an environment of 120-140°C to pelletize to obtain a finished product.

Embodiment 2

[0023] Mix 20% of 40-mesh waste rubber powder and 57% polyethylene in a high-speed mixer, then add 5% of natural asphalt and 15% of petroleum resin, and continue to mix evenly; finally add 3% of calcium carbonate, mix The homogeneous material is put into a twin-screw extruder, heated to 140-180°C to form a molten mixture and then extruded; during the water cooling process, it is kept in an environment of 120-140°C to pelletize to obtain a finished product.

Embodiment 3

[0025] Mix 20% of 80-mesh waste rubber powder and 57% polyethylene in a high-speed mixer, then add 5% of natural asphalt and 15% of petroleum resin, and continue to mix evenly; finally add 3% of calcium carbonate, mix The homogeneous material is put into a twin-screw extruder, heated to 140-180°C to form a molten mixture and then extruded; during the water cooling process, it is kept in an environment of 120-140°C to pelletize to obtain a finished product.

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Abstract

The invention discloses a preparation method of a direct addition type rubber powder composite asphalt mixture modifier. The direct addition type rubber powder composite asphalt mixture modifier is prepared from the following raw materials in percentage by weight: 40-70 percent of one or mixture of polyethylene and polypropylene, 10-40 percent of waste tire powder, 15-30 percent of adhesive resin, 3-15 percent of asphalt material and 2-8 percent of inorganic filler. The preparation method of the direct addition type rubber powder composite asphalt mixture modifier comprises the following steps of: mixing, stirring, heating, milling, extruding and cutting the raw materials. The addition type rubber powder composite asphalt mixture modifier prepared by the method provided by the invention has the advantage of greatly improving the asphalt performances such as heat resistance, freezing resistance, tracking resistance and the like, and meanwhile a product has the advantages of environmental friendliness, energy conservation, low cost and the like, and can be used as an asphalt pavement mixture modifier.

Description

technical field [0001] The invention relates to the technical field of traffic pavement overlay materials, in particular to a direct-injection rubber powder composite asphalt mixture modifier and a preparation method thereof. Background technique [0002] With the in-depth research at home and abroad, waste tires have gradually begun to be used in the construction of highways, which has become one of the main treatment methods for solid waste such as tire rubber. With the development of the automobile industry, waste tire rubber was once regarded as a serious solid waste pollution, and became a headache for the government departments of various countries and must be dealt with. The application of waste rubber to highways can not only receive considerable environmental benefits, but also improve the performance of highways and prolong the service life of road surfaces. [0003] In recent years, in order to use waste tire rubber more scientifically and rationally, researchers...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L23/12C08L21/00C08L95/00C08L57/02C08K3/26
Inventor 张少高黄燕生曾小华
Owner 深圳市科中大交通建材有限公司
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