A kind of polyvinyl chloride elastomer and its preparation method and application
A polyvinyl chloride and elastomer technology, applied in the field of cross-linked polyvinyl chloride elastomer materials, to reduce migration, enhance thermodynamic properties, and improve product performance
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Embodiment 1
[0031] Embodiment 1 A kind of polyvinyl chloride elasticity and preparation method
[0032] In the first step, 100 parts of polyvinyl chloride, 30 parts of epoxidized soybean oil, 2.5 parts of calcium-zinc composite stabilizer, 0.5 part of mercaptan methyl tin stabilizer, 13 parts of hydroxyl-terminated polybutadiene-acrylonitrile, 0.3 part of Triethylenediamine, 0.3 parts of 1010 antioxidant, and 0.1 part of TNP antioxidant are mixed uniformly in a high-speed mixer, the mixing speed is 1000r / min, and the temperature condition is 80-90°C; the product obtained in step (1) is cooled. to below 25℃;
[0033] In the second step, 15 parts of diphenylmethane-4,4'-diisocyanate were added to the product of step one, and mixed at high speed;
[0034] In the third step, the uniformly dispersed product obtained in step 2 is heated to a temperature condition of 85-90° C., and fully reacted for 30-40 min to obtain a mixture of isocyanate-terminated prepolymer and polyvinyl chloride;
[00...
Embodiment 2
[0038] In the first step, 80 parts of polyvinyl chloride, 60 parts of epoxidized soybean oil, 4 parts of calcium zinc composite stabilizer, 10 parts of polytetrahydrofuran ether glycol, 0.5 parts of triethylene diamine, 0.2 parts of 1010 antioxidant, 0.1 part of TNP antioxidant, mixed evenly in a high-speed disperser, the temperature condition is 80-90 ℃;
[0039] In the second step, 20 parts of toluene diisocyanate are slowly added to the step one product of high-speed dispersion;
[0040] In the third step, the uniformly dispersed product obtained in step 2 is heated to a temperature condition of 80-90° C., and fully reacted for 20-30 min to obtain a mixture of isocyanate-terminated prepolymer and polyvinyl chloride;
[0041] In the fourth step, 8 parts of tetraethylene pentamine are slowly added to the product obtained in step 3, mixed at high speed, and the temperature condition is 85-90 ° C, 40min-50min, to obtain primary amine-terminated polyurethane prepolymer, epoxy plas...
Embodiment 3
[0044] In the first step, 120 parts of polyvinyl chloride, 180 parts of epoxy fatty acid octyl ester, 1 part of thiol methyl tin stabilizer, 4 parts of calcium zinc composite stabilizer, 0.6 parts of butyl titanate, 0.2 parts of triethylene diamine , 0.3 parts of 1076 antioxidant, 0.1 part of TBP antioxidant, mixed evenly in a high-speed disperser, and the temperature condition is 80-90 ℃;
[0045] In the second step, 15 parts of hexamethylene diisocyanate are slowly added to the step one product of high-speed dispersion;
[0046] In the third step, the uniformly dispersed product obtained in step 2 is heated to a temperature condition of 80-90°C, and the reaction is performed for 20min-30min;
[0047] The fourth step, slowly adding 30 parts of polyetheramine to the product of step three, mixing at a high speed, the temperature condition is 85-90 ° C, and the reaction time is 20-30 min, the reaction obtains the primary amine-terminated polyurethane prepolymer, epoxy plasticiza...
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