Heat-resistant anti-aging SBS modified asphalt waterproof coiled material

Abstract

The invention discloses a heat-resistant anti-aging SBS modified asphalt waterproof coiled material. The coiled material is prepared from, by weight, 100 parts of asphalt, 6-10 parts of SBS, 2-4 partsof ferric chloride, 10-18 parts of anti-aging agent, 20-30 parts of ceramic silicone rubber powder, 1-3 parts of polytetrafluoroethylene micro-powder, 15-25 parts of naphthenic oil, 0.4-1 part of silane coupling agent and 30-50 parts of white carbon black; the anti-aging agent is prepared from, by weight, 10 parts of modified magnesium-aluminum carbonate hydrotalcite, 1-2 parts of tetramethylpiperidine, 4-6 parts of butylated hydroxytoluene, 2-3 parts of 2,4'-dihydroxybenzophenone, 3-5 parts of 2,4,6-tri(2-hydroxy-4-butoxy-phenyl)-1,3,5-triazine and 0.6-1 part of nano titanium dioxide. According to the coiled material, the asphalt is modified through the synergy of SBS, the ceramic silicone rubber powder and the polytetrafluoroethylene micro-powder, the comprehensive performance of the waterproof coiled material is obviously improved, the produced waterproof coiled material can effectively block ultraviolet rays and eliminate free radicals, and has the excellent aging resistance, decontamination, acid resistance, alkali resistance and high temperature resistance.

Description

technical field [0001] The invention relates to the field of SBS modified asphalt waterproof coiled material, in particular to a heat-resistant and anti-aging SBS modified asphalt waterproof coiled material. Background technique [0002] SBS modified asphalt waterproofing membrane is made of SBS rubber modified petroleum asphalt as the impregnated covering layer, polyester fiber non-woven fabric, jute cloth, glass fiber mat, etc. as the base, and plastic film as the anti-adhesive isolation layer. , batching, co-melting, impregnation, composite molding, curling and other processes. In the existing technology, a single SBS is generally used to swell asphalt. When the amount of SBS exceeds a certain value, further swelling and modification cannot be performed, and agglomeration is prone to occur, resulting in unstable internal structure of the coil. In the northeast where the temperature difference between day and night in spring and autumn is as high as 25°C When it is used i...

AI Technical Summary

Problems solved by technology

In the existing technology, a single SBS is generally used to swell asphalt. When the amount of SBS exceeds a certain value, further swelling and modification cannot be performed, and agglomeration is prone to occur, resulting in unstable internal structure of the coil. In the northeast where the temperature difference between day and night in spring and autumn is as high as 25°C When used in regions and northwest regions, it is easy to cause stress concentration of waterproof building materials, coupled with external pressure and erosion of rain, snow, wind and sand, further accelerating the aging and structural breakage of waterproof coatings

[0003] The patent application number is CN201710750217.8, which discloses a preparation method of SBS modified asphalt waterproofing membrane, through SBS, butyl rubber, styrene-butadiene rubber composite modified asphalt, to avoid the agglomeration phenomenon caused by single SBS modification, and through Adding LDHs compound and di-tert-butyl-p-cresol to asphalt can further improve the aging resistance of asphalt, but only talcum powder is used as a filler, and its Mohs hardness coefficient is 1-1.5, which is the softest mineral, so it is waterproof The hardness and physical strength of the coating film are not good, and it is easy to cause the subsidence of the base surface at a high temperature above 40°C

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