Reactive SBS (styrene-butadiene-styrene) modified asphalt and self-adhesive waterproof coiled material prepared from same
A technology of modified asphalt and waterproof membranes, which is applied to roofs, building insulation materials, building components, etc. that use flexible materials. It can solve the problems that the thermodynamic incompatibility between rubber and asphalt cannot be covered, and it is difficult to form a stable system. , to achieve the effect of improving high and low temperature performance and aging resistance, strong viscosity and good creep
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[0010] Example 1
[0011] The reactive SBS modified asphalt is made from the following raw materials: 45 parts by weight of petroleum asphalt, 10 parts of maleic anhydride SBS rubber, 4 parts of EPDM, 3 parts of coumarone resin, 2 parts of terpene resin, 20 parts of active calcium carbonate. The maleic anhydride graft rate in the maleic anhydride SBS rubber is 1.5%.
[0012] The modified asphalt is obtained after mixing the above-mentioned raw materials at 150°C.
[0013] After the polyester base is impregnated with hot modified asphalt, one side is covered with a release film layer to obtain the self-adhesive waterproofing membrane.
Example Embodiment
[0014] Example 2
[0015] The reactive SBS modified asphalt is made of the following raw materials by weight: 50 parts of petroleum asphalt, 14 parts of maleic anhydride SBS rubber, 3 parts of EPDM, 4 parts of coumarone resin, 3 parts of terpene resin, 25 parts of active calcium carbonate. The maleic anhydride graft rate in the maleic anhydride SBS rubber is 1%.
[0016] The modified asphalt is obtained after mixing the above-mentioned raw materials at 160°C.
[0017] After the glass fiber base is impregnated with hot modified asphalt, a release film layer is covered on one side to obtain the adhesive waterproof membrane.
Example Embodiment
[0018] Example 3
[0019] The reactive SBS modified asphalt is made from the following raw materials: 56 parts by weight of petroleum asphalt, 12 parts of maleic anhydride SBS rubber, 5 parts of EPDM, 6 parts of coumarone resin, 2 parts of terpene resin, 30 parts of active calcium carbonate. The maleic anhydride graft rate in the maleic anhydride SBS rubber is 2%.
[0020] The above-mentioned raw materials are mixed at 165°C to obtain the modified asphalt.
[0021] Take two polypropylene fabric bases, respectively impregnate hot modified asphalt and compound them together to form a waterproof layer, and cover one side of the waterproof layer with a release film layer to obtain a self-adhesive waterproofing membrane.
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