SBS (Styrene-Butadiene-Styrene)-modified asphalt and preparation method thereof

A technology of modified asphalt and modifier, which is applied in building components, building insulation materials, buildings, etc. It can solve the problems of too fast aging attenuation, softening point less than 75°C, etc., and achieve good stability

Inactive Publication Date: 2015-03-11
佛山市高明区生产力促进中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The company uses Marui oil and Poscan oil to produce modified asphalt, but the modified asphalt produced by using Marui oil and Poscan oil has problems such as softening point less than 75°C and aging decay too fast

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] Preferred embodiments of the present invention are described below, and it should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0020] A kind of SBS modified asphalt described in the present invention comprises the base asphalt obtained by straight distillation of Marui oil and Boscan oil, and by styrene-butadiene-styrene block copolymer (SBS) as modifying agent, Marui oil and Boscan oil are by weight percentage, Marui oil is 65%, and Boscan oil is 35%.

[0021] Add nano-calcium carbonate in the production process, which is 3-5% of the matrix asphalt. Nano-calcium carbonate increases the softening point of asphalt and reduces the penetration. Moreover, nano-calcium carbonate is adsorbed on SBS to increase the density of SBS and make SBS Suspended in asphalt, it plays a role of physical stability.

[0022] Add stabilizer, the stabilizer is ...

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PUM

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Abstract

The invention relates to SBS (Styrene-Butadiene-Styrene)-modified asphalt and a preparation method thereof. The SBS-modified asphalt comprises base asphalt produced by straight-run distillation of Merey oil and Boscan oil. A styrene-butadiene-styrene (SBS) block copolymer is adopted as a modifying agent. According to the weight percentage, the Merey oil accounts for 50-75% and the Boscan oil accounts for 25-50%. Various technical indicators of the SBS-modified asphalt are high. A softening point of the SBS-modified asphalt is higher than 75 DEG C. Through adding a stabilizing agent and an anti-aging agent, the SBS-modified asphalt has good stability and durability.

Description

technical field [0001] The invention relates to the technical field of modified asphalt, in particular to a SBS modified asphalt and a preparation method thereof. Background technique [0002] With the construction and development of expressways in my country, the improvement of road grades, the surge in traffic volume and the acceleration of driving speeds have put forward higher requirements for the quality of the road surface. Basic requirements of the road. At present, the asphalt used in the asphalt mixture used in high-grade roads is mostly modified asphalt mixed with modifiers and other fillers in ordinary asphalt. [0003] The modification of asphalt is a physical blending process. After the modifier polymer is added to the asphalt, it forms an elastic network structure in the asphalt through swelling and adsorption. This network structure has ideal elasticity, plasticity and extensibility, making the asphalt performance has been improved across the board. [0004]...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L53/02C08K13/02C08K3/26C08K5/42
Inventor 贺炳红
Owner 佛山市高明区生产力促进中心
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