SBS (styrene-butadiene-styrene) modified asphalt waterproof coiled material filled with vitrified microbeads and preparation method thereof

Abstract

The invention relates to an SBS (styrene-butadiene-styrene) modified asphalt waterproof coiled material filled with vitrified microbeads and a preparation method thereof. The waterproof coiled material is prepared from the following raw materials in parts by weight: 30-50 parts of 90# asphalt, 10-20 parts of 10# asphalt, 5-8 parts of modifying agent SBS rubber, 3-5 parts of polypropylene resin, 8-12 parts of softening agent, 8-10 parts of rubber powder, 5-12 parts of hollow vitrified microbeads and 20-30 parts of light calcium carbonate. The preparation method comprises the following steps: sucking the asphalt and dewatered softening agent which are weighed into an asphalt preparing tank; melting, then heating to 175-185 DEG C, adding the modifying agent SBS rubber and polypropylene resin, further stirring and insulating heat for 1.5 hours until the SBS rubber and polypropylene resin are completely melted into the asphalt system; adding the rubber powder, hollow vitrified microbeads and light calcium carbonate which are weighed; and subsequently, carrying out production according to the equipment and process of the ordinary SBS modified asphalt waterproof coiled material. According to the invention, the SBS modified asphalt waterproof coiled material has the advantages of better high-temperature resistance and thermal insulation property because light hollow vitrified microbeads are added.

Description

technical field [0001] The invention relates to a building waterproof material, in particular to a SBS modified asphalt waterproof coiled material which is filled with hollow vitrified microspheres made of ordinary volcanic ash or perlite and has the function of heat preservation and heat insulation. Background technique [0002] At present, most of the SBS modified asphalt waterproofing membranes supplied in the market in our country generally use light calcium, heavy calcium, talcum powder or mica powder and other dense materials in the formulation design of the filler in the modified asphalt batch. Mineral powder usually accounts for about 30% of the total raw materials. Its function is to strengthen the hardness and tensile strength of the waterproof membrane, and improve the thermal stability and weather resistance of the waterproof membrane. However, there are certain shortcomings in the production of SBS modified asphalt waterproofing membranes with this type of miner...

AI Technical Summary

Problems solved by technology

For this reason, the comprehensive cost of the product has been increased accordingly;

[0004] 2. Great environmental pollution

Dust diffuses into the workshop and the air, polluting the environment and harmful to the health of production workers;

[0005] 3. High material density

The specific gravity of general mineral materials is 2000kg / m 3 Above, the area of ​​the SBS modified asphalt waterproofing membrane product obtained in the same proportion of the formula will be different, which will increase the material cost of the finished product accordingly

At the same time, it will also increase the transportation cost of the product and the labor intensity of the workers;

[0006] 4. Consume the country's non-renewable resources

[0007] 5. Existing SBS modified asphalt waterproofing membranes have serious heat absorption and poor thermal insulation

Because the black color of asphalt raw materials can easily absorb the heat of the sun, the surface temperature in summer can reach 70-80°C, which seriously affects the service life of SBS modified asphalt waterproof membrane and the living quality of the top floor of the building.

In winter, there is no thermal insulation performance, and the asphalt often cracks due to low temperature damage, causing roof leakage;

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