High-temperature-resistant butyl pressure sensitive adhesive and preparation method
A high-temperature-resistant, pressure-sensitive adhesive technology, applied in adhesives, non-polymer adhesive additives, adhesive types, etc., can solve the heat resistance, soil stress and shear resistance of asphalt modified butyl pressure-sensitive adhesives Poor cutting ability, wrinkling and sagging, affecting the anti-corrosion service life of cold-wound tapes, etc., to achieve the effects of improving cohesive strength and soil shear resistance, improving aging resistance, and good heat resistance
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Embodiment 1
[0024] A kind of high temperature resistant butyl pressure-sensitive adhesive, its preparation process is as follows:
[0025] 1) In parts by weight, 20 parts of butyl rubber, 10 parts of polyisobutylene with a molecular weight of 70,000 to 100,000 and 39.5 parts of filler are put into a double-roll mill for mixing, and after mixing evenly, a film is produced;
[0026] 2) Add 15 parts of tackifying resin and 5 parts of SEBS into the kneader and stir, and gradually heat to 140-150°C, melt and mix the tackifying resin and SEBS to obtain mixture A;
[0027] 3) Add 10 parts of polyisobutylene with a molecular weight of 30,000 to 60,000 to the mixture A obtained in step 2), and further melt and mix it evenly at 140-150° C. to obtain mixture B;
[0028] 4) To the mixture B obtained in step 3), add the raw rubber sheet kneaded in step 1) and 0.5 parts of antioxidant in turn, stir at 140-150°C for 1 hour and discharge to obtain high temperature resistant butyl pressure sensitive glue...
Embodiment 2
[0031] A kind of high temperature resistant butyl pressure-sensitive adhesive, its preparation process is as follows:
[0032] 1) In parts by weight, 20 parts of butyl rubber, 12 parts of polyisobutylene with a molecular weight of 70,000-100,000 and 25 parts of fillers are put into a double-roll mill for mixing, and after mixing evenly, a film is produced;
[0033] 2) Add 20 parts of tackifying resin and 10 parts of SEBS into the kneader and stir, and gradually heat to 140-150°C, melt and mix the tackifying resin and SEBS to obtain mixture A;
[0034] 3) Add 12 parts of polyisobutylene with a molecular weight of 30,000 to 60,000 to the mixture A obtained in step 2), and further melt and stir at 140-150°C to obtain mixture B;
[0035] 4) To the mixture B obtained in step 3), add the raw rubber sheet kneaded in step 1) and 1 part of antioxidant in turn, stir at 140-150°C for 1 hour and discharge to obtain high temperature resistant butyl pressure sensitive glue.
[0036] Speci...
Embodiment 3
[0038] A kind of high temperature resistant butyl pressure-sensitive adhesive, its preparation process is as follows:
[0039] 1) In parts by weight, 20 parts of butyl rubber, 10 parts of polyisobutylene with a molecular weight of 70,000 to 100,000 and 20 parts of filler are put into a double-roll mill for mixing, and after mixing evenly, a film is produced;
[0040] 2) Add 20 parts of tackifying resin and 15 parts of SEBS into the kneader and stir, and gradually heat to 140-150°C, melt and mix the tackifying resin and SEBS to obtain mixture A;
[0041] 3) Add 13.5 parts of polyisobutylene with a molecular weight of 30,000 to 60,000 to the mixture A obtained in step 2), and further melt, stir and mix evenly at 140-150°C to obtain mixture B;
[0042] 4) To the mixture B obtained in step 3), add the raw rubber sheet kneaded in step 1) and 1.5 parts of antioxidant in turn, stir at 140-150°C for 1 hour and discharge to obtain high temperature resistant butyl pressure sensitive gl...
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