Millable polyurethane rubber for spinning cot and preparation method thereof
A technology of polyurethane compound rubber and kneading type polyurethane is applied in the field of polyurethane compound rubber for spinning rubber rollers and its preparation, which can solve the problems of different physical and mechanical properties of vulcanized rubber, difference in use effect and service life, etc., and achieve excellent elasticity , maintain stability and long service life
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Embodiment 1
[0028] Weigh 100 parts of mixing type polyurethane rubber, 10 parts of white carbon black, 20 parts of dioctyl phthalate, 5 parts of (3-lauryl amidopropyl) trimethylammonium methyl sulfate, dibutyldialkyltoluene 2 parts, 3 parts of pigment, 5 parts of dicumyl peroxide, 1.6 parts of N, N'-m-phenylene bismaleimide, 2 parts of mixture of fatty acid and isoalkane wax, add the above-mentioned weighed materials The rubber mixer is used for mixing, so that the materials are evenly dispersed to obtain the mixed rubber.
[0029] Extrude, vulcanize and form the rubber compound obtained above to obtain a spinning cot, and the hardness of the cot is measured to be 65±2 degrees (Shore A).
Embodiment 2
[0031] Weigh 100 parts of mixing polyurethane rubber, 25 parts of activated clay, 10 parts of dibutyl diglyceride adipate, 3 parts of composite surfactant AT-P5 (purchased from Jiannuo Polymer Materials Research Institute), styrene 2 parts of phenol, 3 parts of pigment, 2.5 parts of 1,1-bis(tert-butylperoxy)cyclohexane, 1.55 parts of triallyl cyanurate, 2 parts of stearic acid, the above-mentioned The materials are added to the rubber mixer for mixing, so that the materials are evenly dispersed to obtain the mixed rubber.
[0032] Extrude, vulcanize and form the rubber compound obtained above to obtain a spinning cot, and the hardness of the cot is measured to be 60±2 degrees (Shore A).
Embodiment 3
[0034] Weigh 100 parts of mixing type polyurethane rubber, 40 parts of activated clay, 25 parts of polyether plasticizer TP-90B (purchased from Rohm and Haas Company of the United States), 3082 parts of antistatic agent, 3 parts of dibutylene toluene, 5 parts of pigment, 5 parts of 1,4-bis-tert-butylperoxycumene, 5 parts of trimethylolpropane trimethacrylate, 0.5 part of stearic acid, add the above-mentioned materials into the rubber mixer Mixing is carried out so that the materials are uniformly dispersed to obtain a mixed rubber.
[0035] Extrude, vulcanize and form the rubber compound obtained above to obtain a spinning cot, and the hardness of the cot is measured to be 67±2 degrees (Shore A).
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