| 团状模塑料/丁苯橡胶/甲基乙烯基硅橡胶绝缘复合材料的性能研究 |
| Properties of Dough Moulding Compound/SBR/MVQ Electrically Insulating Composite |
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| DOI： |
| 中文关键词: 甲基乙烯基硅橡胶 丁苯橡胶 团状模塑料 复合材料 电绝缘性能 氧指数 |
| 英文关键词: MVQ SBR dough moulding compound composite electrically insulating property oxygen index |
| 基金项目: |
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| 中文摘要: |
| 制备玻璃纤维团状模塑料（DMC）/丁苯橡胶（SBR）/甲基乙烯基硅橡胶（MVQ）绝缘复合材料，并对其性能进行研究。结果表明：与采用顺丁橡胶、丁腈橡胶、丙烯酸酯橡胶和三元乙丙橡胶作相容剂相比，采用SBR作相容剂可以改善DMC和MVQ间的相容性，提高DMC/SBR/MVQ绝缘复合材料的性能，DMC/SBR/MVQ的最佳配比为60/25/75；DMC/SBR/MVQ绝缘复合材料最佳混炼工艺为分步法加入白炭黑、分批法加入DMC，分别将MVQ和SBR进行混炼，再将两种混炼胶共混均匀；最佳硫化条件为180 ℃/1.2 MPa×15 min。在此条件下制备的DMC/SBR/MVQ绝缘复合材料的电绝缘性能良好，阻燃性能达到电缆绝缘材料的要求。 |
| 英文摘要: |
| The dough moulding compound（DMC）/SBR/MVQ electrically insulating composites were prepared，and their properties were investigated.The results showed that，compared with BR，NBR，ACM and EPDM，when SBR was used as compatibilizer，the compatibility between DMC and MVQ was improved，the physical properties and oxygen index of DMC/SBR/MVQ insulating composite were increased，and the optimum mass ratio of DMC/SBR/MVQ was 60/25/75.The optimum mixing process was as follows: MVQ and SBR were mixed separately，silica was added in several mixing steps，DMC was added by batch method，and then the MVQ and SBR compounds were blended.The optimum mixing mode was that silica added by subsection method，DMC added by batch method，MVQ and SBR mixed respectively，and then blended.The optimum cure condition was 180 ℃/1.2 MPa×15 min.Under this process，DMC/SBR/MVQ composite possessed good electrically insulating property，and its flame retardancy reached the requirement of cable insulation material. |
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