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Rubber compound modified asphalt and preparation method thereof

A technology of composite modified asphalt and rubber, which is applied in the direction of building components, building insulation materials, construction, etc., can solve the problems of poor low temperature performance and easy softening, etc., and achieve the effect of improving product quality and enhancing construction workability

Inactive Publication Date: 2011-03-16
中国禾森石化控股有限公司
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Problems solved by technology

However, asphalt itself still has disadvantages such as poor low-temperature performance and easy softening at high temperature, so it is usually necessary to modify the asphalt

Method used

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  • Rubber compound modified asphalt and preparation method thereof

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Embodiment Construction

[0020] Preparation Examples:

[0021] Petroleum asphalt is transported through an asphalt pump, measured by a mass flow meter and heated to 170-180°C by a rapid heating heat exchange system; the heated asphalt, rubber powder and additives are measured in proportion and added to the mixer for stirring to mix and swell. Reaction time: 40 minutes. The ratio is: 39.3% of petroleum asphalt; 35% of rubber powder; 15% of coal tar; 5% of cement; 3% of dimethylaminopyridine (catalyst); .

[0022] Pump the mixture obtained in step b to the colloid mill for shearing and grinding; pump the sheared and ground mixture to the reaction storage tank for rapid re-swelling, then return to pumping to the colloid mill for shearing and grinding again to produce qualified rubber compound modified finished asphalt.

[0023] Performance characteristics of the finished product:

[0024] The invention has the characteristics of anti-rutting at high temperature, anti-cracking at low temperature, anti...

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Abstract

The invention provides rubber compound modified asphalt and a preparation method thereof. The method comprises the following steps: petroleum asphalt is conveyed by an asphalt pump, metered by a mass flowmeter and heated to 170-180 DEG C by a rapid heating heat exchange system; and the heated hot asphalt, rubber powder and additives are added to a mixer after being proportionally metered to be stirred for mixing and swelling, and the reaction time is 40min. The rubber compound modified asphalt is prepared by mixing 39.3% of petroleum asphalt, 35% of rubber powder, 15% of coal tar, 5% of cement, 3% of dimethylamino pyridine, 2.5% of butyl americium rubbers and 0.2% of dibenzoic acid dibutyl tin. Scrap tire rubber powder is added at high proportion; therefore, the rubber compound modified asphalt has great environmental protection significance, and at the same time, the wax content in the finished asphalt is reduced, the applicable scope of temperature is expanded to minus 40-90 DEG C and the 180 DEG C rotary viscosity value is kept between 1.5Pa.s and 2.5Pa.s, thus improving the construction workability.

Description

technical field [0001] The invention relates to building and road construction materials and a preparation method thereof, in particular to rubber composite modified asphalt and a preparation method thereof. Background technique [0002] Asphalt is an important building material, which is widely used in recording engineering and building waterproofing engineering. However, asphalt itself still has disadvantages such as poor low-temperature performance and easy softening at high temperature, so it is usually necessary to modify the asphalt. [0003] Chinese patent literature discloses a "desulfurized rubber powder modified asphalt" (ZL03118863.X), the modified asphalt is made of desulfurized rubber powder, asphalt and compatibilizer at high temperature through high-speed shear stirring or colloid mill grinding And it is prepared, wherein the asphalt accounts for 70-95% of the total weight of raw materials, the desulfurized rubber powder accounts for 5-30% of the total weight...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08L21/00C08K13/02C08K5/3432C08K5/57E01C7/18
Inventor 管国全
Owner 中国禾森石化控股有限公司
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