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1. 发明授权

US4383072A Vulcanizable rubber mixture 失效
标题翻译：可硫化橡胶混合物
公开(公告)号：US4383072A
公开(公告)日：1983-05-10
申请号：US303092
申请日：1981-09-17
申请人： Klaus Thiel , Roland Stecher , Jochen Schnetger
发明人： Klaus Thiel , Roland Stecher , Jochen Schnetger
IPC分类号： C08L23/18 , C08L1/00 , C08L7/00 , C08L21/00 , C08L23/00 , C08L27/00 , C08L33/00 , C08L33/02 , C08L61/10 , C08L101/00
CPC分类号： C08L21/00
摘要： A vulcanizable rubber mixture for producing a leather-hard rubber, which mixture is suitable for use in making a composite profile produced by simultaneous extrusion and vulcanization of two different grades of rubber. The composite profile has a region of leather-hard rubber which serves as the clamping part, and a second zone made integrally therewith, of ordinary soft, rubber-elastic rubber. The vulcanizable rubber mixture for producing a leather-hard mixture contains 20 to 40 parts by weight of polar rubber, i.e. rubber which splits off acid groups under vulcanizing conditions, e.g. polychloroprene, and 60 to 80 parts non-polar rubber, i.e. will not split off said groups, e.g. nitrile rubber, 15 to 50 parts phenolformaldehyde reinforcement resin, 0.5 to 4 parts hexamethylene tetramine, and 0.5 to 3 parts sulfur. Conventional accelerators and zinc oxide are added. Excessive pore formation during the vulcanizing is repressed by the addition of the polar rubber which splits off acid groups under vulcanizing conditions. Other excellent properties are increased toughness in cutting and stamping, reduced splintering, low shrinkage, good injectability, and insignificant production of sulfur dioxide.
摘要翻译：一种用于生产皮革硬橡胶的可硫化橡胶混合物，该混合物适用于通过同时挤出和硫化两种不同等级的橡胶制备复合型材。复合型材具有普通软橡胶弹性橡胶作为夹紧部分的皮革硬橡胶区域和与其一体制成的第二区域。用于生产皮革硬混合物的可硫化橡胶混合物包含20至40重量份的极性橡胶，即在硫化条件下分解酸基的橡胶，例如硫酸橡胶。聚氯丁二烯和60至80份非极性橡胶，即不会分裂所述基团，例如，丁腈橡胶，15〜50份苯酚甲醛增强树脂，0.5〜4份六亚甲基四胺和0.5〜3份硫。加入常规的促进剂和氧化锌。通过加入在硫化条件下分解酸基的极性橡胶来抑制硫化过程中的孔形成过多。其他优异的性能是提高切割和冲压的韧性，减少分裂，低收缩率，良好的注射性和二氧化硫的微量生产。

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