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Compound SBS modified asphalt and preparation method thereof

A compound modified asphalt and asphalt pump technology, applied in building components, building thermal insulation materials, construction and other directions, can solve the problems of pollution, polluted air, tire corrosion resistance affecting the environment, etc., to enhance construction workability, improve product quality quality effect

Inactive Publication Date: 2011-03-16
中国禾森石化控股有限公司
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AI Technical Summary

Problems solved by technology

A large number of waste tires are produced every year. If the waste tires are discarded, the environment will be seriously affected for a long time due to the corrosion resistance of the tires; if the waste tires are burned, the air will be seriously polluted and cause public nuisance

Method used

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  • Compound SBS modified asphalt and preparation method thereof

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Embodiment Construction

[0021] Preparation Examples:

[0022] Petroleum asphalt is sent to a low-speed pre-shear mixer through an asphalt pump, a mass flow meter, and a rapid heating heat exchange system to 170-180°C; metered addition of SBS polymer, rubber powder, coal tar, and dimethylamino Pyridine and butaurium glue, complete the full swelling of petroleum asphalt on SBS polymer in the mixer; after the pre-mixing and swelling stages, the mixture enters the colloid mill through the asphalt pump and fully grinds to obtain the required dispersion and mixing state; The fully ground mixture is pumped into the development tank through an asphalt pump, added with dibutyltin dibenzoate as a stabilizer, and developed for 1 hour at a temperature of 180°C under low-speed stirring to become a qualified SBS composite modified asphalt product. The ratio is: 42.3% of petroleum asphalt; 35% of rubber powder; 15% of coal tar; 2% of SBS polymer; 3% of dimethylaminopyridine (catalyst);

[0023] Among them, SBS is:...

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Abstract

The invention provides compound SBS modified asphalt and a preparation method thereof. The method comprises the following steps: metering petroleum asphalt, rapidly heating the petroleum asphalt to 170-180 DEG C and sending the petroleum asphalt to a mixer; metering and adding SBS polymers, rubber powder, coal tar, dimethylamino pyridine and butyl americium rubbers, and after the substances are mixed and fully swollen in the mixer, fully grinding the mixture in a colloid grinder to reach the required disperse mixed melt state; sending the ground mixture to a development tank, adding a stabilizing agent dibenzoic acid dibutyl tin and developing the mixture for 1h under stirring at 180 DEG C and low speed, thus obtaining the qualified product. The asphalt is prepared by mixing 42.3% of petroleum asphalt, 35% of rubber powder, 15% of coal tar, 2% of SBS polymers, 3% of dimethylamino pyridine, 2.5% of butyl americium rubbers and 0.2% of dibenzoic acid dibutyl tin. The rubber powder can be added at high proportion and the high / low temperature performance value and the storage stability of the finished product are improved.

Description

technical field [0001] The invention relates to building waterproof and road building materials and a manufacturing method thereof, in particular to SBS composite modified asphalt and a preparation method thereof. Background technique [0002] With the progress of society and the improvement of living standards, the automobile industry has developed very rapidly. A large number of waste tires are produced every year. If the waste tires are discarded, the corrosion resistance of the tires will seriously affect the environment for a long time; if the waste tires are burned, the air will be seriously polluted and cause public nuisance. Therefore, the proper disposal of a large number of waste tires is a major problem that must be solved in today's society. [0003] Chinese patent documents CN200410040237.9, CN200810035847.8, etc. all desulfurize waste tires and modify asphalt for waste utilization. [0004] Chinese patent literature discloses a "desulfurized rubber powder mod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L21/00C08L53/02C08K5/3432C08K5/57E01C7/18
Inventor 管国全
Owner 中国禾森石化控股有限公司
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