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High-thermal-conductivity rubber composite modified asphalt and preparation method thereof

A composite modified asphalt, high thermal conductivity technology, applied in building components, building insulation materials, buildings, etc., can solve problems such as poor thermal conductivity and inability to meet application requirements

Active Publication Date: 2022-05-27
贵阳市城市发展投资集团股份有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention intends to provide a high thermal conductivity rubber composite modified asphalt to solve the technical problem that the poor thermal conductivity of rubber asphalt in the prior art cannot meet the application requirements

Method used

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  • High-thermal-conductivity rubber composite modified asphalt and preparation method thereof
  • High-thermal-conductivity rubber composite modified asphalt and preparation method thereof
  • High-thermal-conductivity rubber composite modified asphalt and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0025] A high thermal conductivity rubber compound modified asphalt, in parts by weight, comprises the following raw materials: 2.5 parts of thermally conductive fillers, 13 parts of rubber, 1.5 parts of PE plastics, 83.15 parts of asphalt and 0.15 parts of stabilizers. Among them, carbon fiber T800 is specifically selected as the thermally conductive filler, and the mesh number of the carbon fiber is controlled to be 50-1000 mesh (100 mesh is used in this embodiment). Rubber comes from waste truck tires. In addition to truck tires, sole rubber, waste bicycle tires and car tires can also be used. The material of the rubber can be natural rubber, styrene-butadiene rubber, butadiene rubber, butyl rubber, etc. The main component of the rubber in the truck tire in this embodiment is natural rubber. The truck tires are pulverized into particles with a particle size of 30-40 meshes (30 meshes are used in this embodiment), and then the rubber particles are subjected to conventional d...

Embodiment 2

[0031] Example 2-Example 6 are basically the same as Example 1, the difference lies in the selection of the consumption of some raw material types, and the selection of process conditions, see Table 1 for details. In Example 2, the graphite is 300 mesh microcrystalline graphite powder, and the carbon content is 60%; in Example 3, the apparent specific volume (cm 3 / g) is 14-17, resistivity (Ω·m)≤2.5; in Example 5, the carbon nanotubes are walled carbon nanotubes, the purity is >95%, the length is 3-12 μm, the inner diameter is 3-5 nm, and the outer diameter is 3-5 nm. 8-15nm density 0.15g / cm 3 . In Examples 1-6, the particle size of the thermally conductive filler was maintained between 500-2000 nm.

[0032]Comparative Example 1-Example 6 are basically the same as Example 1, the difference lies in the selection of the consumption of some raw material types, and the selection of process conditions, see Table 2 for details. The performance test was carried out on the composit...

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Abstract

The invention relates to the technical field of asphalt modification, in particular to high-thermal-conductivity rubber composite modified asphalt and a preparation method thereof. The high-thermal-conductivity rubber composite modified asphalt is prepared from the following raw materials in parts by weight: 2.5 to 4.5 parts of thermal conductive filler, 13 to 18 parts of rubber, 1.5 to 4.5 parts of PE (Polyethylene) plastic, 72.6 to 82.85 parts of asphalt and 0.15 to 0.4 part of stabilizer, the heat-conducting filler comprises at least one of carbon fibers, graphite, acetylene black, aluminum oxide and aluminum nitride. By adding the heat-conducting filler into the rubber modified asphalt, the technical problem that the rubber asphalt in the prior art is poor in heat-conducting property and cannot meet application requirements is solved. According to the technical scheme, the heat-conducting property of the modified asphalt is improved, meanwhile, the influence of the heat-conducting material on various properties of the modified asphalt is small, the problems that rubber modified asphalt is difficult to heat on site, high in heating temperature and the like can be solved, and wide application prospects are achieved.

Description

technical field [0001] The invention relates to the technical field of asphalt modification, in particular to a high thermal conductivity rubber compound modified asphalt and a preparation method thereof. Background technique [0002] Modified asphalt refers to the asphalt binder mixed with external admixtures (modifiers) such as rubber, resin, polymer or other fillers, or the asphalt processing product obtained by taking measures such as mild oxidation processing of asphalt, so that asphalt performance is improved. As a result of the rapid development of my country's automobile industry and petrochemical industry, a large number of waste plastics and waste tires and other consumable materials are causing serious pollution to our living environment. Relevant road researchers began to add waste rubber powder as a modifier to asphalt, and use a specific process to prepare rubber-modified asphalt. From the perspective of modified asphalt performance, rubber-modified asphalt h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L23/08C08L7/00C08K7/06C08K3/04C08K3/22C08K3/28
CPCC08L95/00C08K2201/011C08K2003/2227C08K2003/282C08L23/0815C08L7/00C08K7/06C08K3/04C08K3/041C08K3/22C08K3/28
Inventor 林昌顺杨万林周刚徐明进罗继鸿梁茂然张丽陈恩茂刘叶叶吴才平杨择韩清岭
Owner 贵阳市城市发展投资集团股份有限公司
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