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Fluorine rubber DR150 and MVQ used together

Time:2020/11/12 posted:Kehong Enterprises Co.,Ltd.

The combination of fluororubber and MVQ silicone rubber is a polymer elastomer with both inorganic and organic properties. Due to its molecular structure, the Si-O bond energy (451kJ/mol) of the molecular backbone is higher than that of the general rubber molecular backbone. Compared with general rubber, silicone rubber has excellent heat resistance, elasticity, cold resistance, excellent mold release, electrical properties, air permeability, and thermal conductivity. , Waterproof and good temperature stability. Combining silicone rubber and fluorine rubber can obtain a combined rubber that has the characteristics of both rubbers. Most silicone rubbers use peroxides as vulcanizing agents, and many fluororubbers using peroxides as vulcanizing agents have been developed so that peroxides can be used as co-vulcanizing agents for the two. When the volume ratio of fluorine rubber/silicone rubber is 80/20, the brittleness temperature is about 10℃ lower than FPM. There is almost no change in t50; when the volume ratio is 50/50, t50 can be reduced to -29.5°C, the low temperature performance is significantly improved, and the cost is reduced. Basic formula (parts by mass): Fluorine rubber 50; Silicone rubber 50; DCP 2.0; TAC 2.5; Ca(OH) 2.5. It is reported that the JSRJE-NIXF series fluororubber/silicone rubber combined rubber developed by Japan Synthetic Rubber Company has excellent heat resistance, cold resistance, oil resistance, water resistance and steam resistance, and the price is relatively low. Japan Shin-Etsu Chemical Co., Ltd. has also developed X36100U series fluororubber/silicone rubber combined with excellent dynamic fatigue performance and high-strength FE301U series fluororubber/silicone rubber with tensile strength greater than 13MPa and tear strength of 30-60kN/m. However, there are few basic research reports about the influence of the characteristics of silicone rubber and fluororubber on the compatibility, co-vulcanization, and mechanical properties of the combined rubber. Fluorine rubber/silicone rubber combined rubber is mainly used in the manufacture of automobile fuel supply diaphragm.


氟橡胶与MVQ并用 硅橡胶是一种兼具无机和有机性质的高分子弹性体,由于其分子结构的关系如分子主链的Si-O键键能(451kJ/mol)比一般橡胶分子主链的C-C键键能(355kJ/mol)高得多等原因,与一般橡胶相比,硅橡胶具有优异的耐热性、弹性、耐寒性,优良的脱模性、电气性、透气性、导热性、防水性及良好的温度稳定性。将硅橡胶与氟橡胶并用,可获得兼具两种橡胶特性的并用胶。 硅橡胶多以过氧化物为硫化剂,且现已开发出了不少用过氧化物作为硫化剂的氟橡胶,这样就可以用过氧化物作为二者的共硫化剂。当氟橡胶/硅橡胶的体积比为80/20时,脆性温度比FPM降低10℃左右。t50则几乎没有变化;体积比为50/50时,t50可降至-29.5℃,低温性能得到明显改善,且成本降低。 基本配方(质量份):氟橡胶50;硅橡胶50;DCP 2.0;TAC 2.5;Ca(OH)2.5。 据报道日本合成橡胶公司开发的JSRJE-NIXF系列氟橡胶/硅橡胶并用胶具有优良的耐热性、耐寒性、耐油性、耐水性和耐蒸汽性,且价格相对较低。日本信越化学公司也开发了动态疲劳性能优良的X36100U系列氟橡胶/硅橡胶并用胶及拉伸强度大于13MPa、撕裂强度为30~60kN/m的高强度FE301U系列氟橡胶/硅橡胶并用胶。但是,目前有关硅橡胶、氟橡胶本身的特性对并用胶的相容性、共硫化性、力学性能的影响等方面的基础研究报道不多。氟橡胶/硅橡胶并用胶主要用于汽车供油膜片的制造.

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