Process for preparing high-performance urethane elastomer

A technology of polyurethane elastomer and production method, which is applied in the production field of cast polyurethane elastomer, and can solve problems such as large heat generation, difficult to meet product application, large compression deformation, etc.
CN101319040AInactive Publication Date: 2008-12-10汕头市澄海区盐鸿工业胶辊有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
汕头市澄海区盐鸿工业胶辊有限公司
Publication Date
2008-12-10
Estimated Expiration
Not applicable · inactive patent
Patent Text Reader

Abstract

The invention discloses a method for producing a high-performance polyurethane elastomer, comprising the following steps in turn: (A). macromolecular polylol, diisocyanate (OCN-R-NCO) and micromolecular polylol are mixed according to the mass portion of 100 to 27-65 to 1-5 to synthesize a prepolymer; and (B). the prepolymer obtained in step A and chain extender micromolecular polylol generate chain extension crosslinking reaction according to the mass portion of 100 to 3-10, and then the polyurethane elastomer is produced through casting and sulfuration techniques. The polyurethane elastomer prepared according to the method has more superior comprehensive physical characteristics than a polyurethane elastomer synthesized by the prior formula, and has low interior heat build-up under the condition of dynamic abrasiveness and superior tear strength; and various physical characteristics of the polyurethane elastomer are all superior to the cast polyurethane elastomer prepared by the prior formula. The production process of the method is easy, practical, environment-friendly and energy-saving, and the production cost is low.
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Description

technical field

[0001] The technology of the invention relates to the production field of casting polyurethane elastomer. Background technique

[0002] The formula of traditional casting polyurethane elastomer is composed of diisocyanate <ocn-r-nco>Mix and react with hydroxyl-terminated macromolecular polyols (polyester polyols or polyether polyols) at specific temperatures and conditions to produce isocyanate-terminated prepolymers, and then prepare the prepolymers in specific conditions. Under temperature and conditions, it is fully mixed with small molecule polyol or small molecule polyamine (the amount of chain extender is calculated from the content of -NCO in the prepolymer) to carry out chain extension reaction, and after casting and vulcanization. High molecular polymers are produced, that is, polyurethane elastomers with urethane linkages or amine-substituted urea linkages.

[0003] However, when the cast polyurethane elastomer synthesized by traditional f...

Claims

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