Preparation method of anti-migration thermoplastic polyurethane elastomer
A technology of thermoplastic polyurethane and elastomer, which is applied in the field of preparation of anti-migration thermoplastic polyurethane elastomer, can solve the problems of affecting product appearance, reducing the effectiveness of additives, affecting the performance of materials, etc., to extend the retention period of physical properties and the retention period of good physical properties , Improve the effect of microphase separation
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[0030] Example 1
[0031] Add antioxidant 1010 accounting for 4‰ of polyester polyol mass, stannous octoate accounting for 150ppm polyester polyol mass to the reaction kettle, composed of adipic acid, 1,4-butanediol and 1,3-butanediol. A polyester polyol with a number-average molecular mass of 2000 formed by the condensation of mixed alcohols, wherein the mass ratio of 1,3-butanediol to 1,4-butanediol is 1:7. After dehydration, melting and mixing under -0.1MPa vacuum for 5 hours, put it into the metering tank, open the metering tank and stir and evacuate to -0.085MPa, then stop the vacuum and fill with nitrogen to form component A for standby;
[0032] Diphenylmethane diisocyanate is melted at 43.5°C, pumped into a measuring tank with a vacuum, and formed into component B for later use;
[0033] 1,4-Butanediol was melted at 40°C, pumped into a metering tank with vacuum, dehydrated in a vacuum of -0.08~-0.1MPa for 4h, and formed component C for use;
[0034] Component A, Comp...
Example Embodiment
[0037] Example 2
[0038] Add antioxidant 1010 accounting for 4‰ of polyester polyol mass, stannous octoate accounting for 150ppm polyester polyol mass to the reaction kettle, composed of adipic acid, 1,4-butanediol and 1,3-butanediol. A polyester polyol with a number-average molecular mass of 2000 formed by the condensation of mixed alcohols, wherein the mass ratio of 1,3-butanediol to 1,4-butanediol is 1:7. After dehydration, melting and mixing under -0.1MPa vacuum for 5 hours, put it into the metering tank, open the metering tank and stir and evacuate to -0.085MPa, then stop the vacuum and fill with nitrogen to form component A for standby;
[0039] Diphenylmethane diisocyanate is melted at 43.5°C, pumped into a measuring tank with a vacuum, and formed into component B for later use;
[0040] 1,4-Butanediol was melted at 40°C, pumped into a metering tank with vacuum, dehydrated in a vacuum of -0.08~-0.1MPa for 4h, and formed component C for use;
[0041] Component A, Comp...
Example Embodiment
[0044] Example 3
[0045] Add antioxidant 1010 accounting for 4‰ of polyester polyol mass, stannous octoate accounting for 150ppm polyester polyol mass to the reaction kettle, composed of adipic acid, 1,4-butanediol and 1,3-butanediol. A polyester polyol with a number-average molecular mass of 2000 formed by the condensation of mixed alcohols, wherein the mass ratio of 1,3-butanediol to 1,4-butanediol is 1:9. After dehydration, melting and mixing under -0.1MPa vacuum for 5 hours, put it into the metering tank, open the metering tank and stir and evacuate to -0.085MPa, then stop the vacuum and fill with nitrogen to form component A for standby;
[0046] Diphenylmethane diisocyanate is melted at 43.5°C, pumped into a measuring tank with a vacuum, and formed into component B for later use;
[0047] 1,4-Butanediol was melted at 40°C, pumped into a metering tank with vacuum, dehydrated in a vacuum of -0.08~-0.1MPa for 4h, and formed component C for use;
[0048] Component A, Comp...
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