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Thermal-storage-stabilized rubber-powdery asphalt composition and its preparation

A heat storage stable, asphalt composition technology, applied in the direction of building construction, building components, building insulation materials, etc., to achieve the effect of stable storage

Active Publication Date: 2007-01-17
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0009] The purpose of the present invention is to provide a thermal storage stable rubber powder-asphalt composition and its preparation method on the basis of the prior art, to solve the problem of thermal storage stability of rubber powder asphalt

Method used

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Embodiment Construction

[0013] The rubber powder-asphalt composition provided by the invention comprises: 65-95% by weight of asphalt, 1-30% by weight of rubber powder, 0-30% by weight of compatibilizer, and 0.01-5% by weight of auxiliary agent. The calculation basis is the total weight of rubber powder-bitumen composition.

[0014] The asphalt mainly refers to petroleum asphalt, which is one or more mixtures selected from straight run asphalt, solvent deoiled asphalt, oxidized asphalt and petroleum residue with a distillation range greater than 300°C.

[0015] The rubber powder mainly refers to waste tire rubber powder, which is obtained by crushing waste tires composed of natural rubber, styrene-butadiene rubber, butadiene rubber and isoprene rubber. The particle size of the rubber powder is between 20 and 200 mesh.

[0016] The compatibilizer is selected from petroleum fractions, coal tar fractions, catalytic cracking oil slurry, deasphalted oil, solvent refining extracted oil, tar, tall oil and ...

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Abstract

A heat-stored stabilized rubber powder-asphalt composition and its production are disclosed. The composition consists of asphalt 65-95wt%, 1-30wt% rubber powder 1-30wt%, compatibilizer 0-30wt% and auxiliary 0.01-5wt%. The process is carried out by mixing asphalt with rubber powder and compatibilizer, reacting at 100-240degree under high-speed shear agitating or gel grinding action for 0.2-4hrs, adding into auxiliary and re-reacting for 0.3-6hrs.

Description

technical field [0001] The invention belongs to an asphalt material composition and a preparation method thereof, more specifically, to a storage-stable modified asphalt and a preparation method thereof. Background technique [0002] As a pavement material for roads, construction and water conservancy industries, asphalt has developed very rapidly. However, asphalt is highly sensitive to temperature. There are problems of high temperature flow in summer and low temperature cracking in winter. Therefore, it has brought certain restrictions to its application. [0003] In view of this, adding various modified materials to asphalt to improve the temperature sensitivity of asphalt has attracted more and more attention. At present, polymer modifiers are the most widely used, mainly including thermoplastic elastomers, such as: styrene-butadiene-styrene (SBS), styrene-isoprene-styrene (SIS), etc. ; Rubber, such as: butyl rubber, styrene-butadiene rubber, et...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08J3/20
Inventor 佘玉成王子军王翠红罗爱兰
Owner CHINA PETROLEUM & CHEM CORP
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