制备不同乙烯基硅橡胶与苯基乙烯基硅橡胶配比的复合材料,探究不同苯基乙烯基含量的复合材料的力学性能、阻燃性能、耐湿热老化性能、耐低温压缩性能、耐低温拉伸性能变化。结果表明,随着苯基乙烯基硅橡胶含量的增加,复合材料阻燃级别由无级别逐渐上升至V0级;未添加苯基硅橡胶的复合材料经48h热氧老化后拉伸强度变化率为32.2%,而添加94份苯基乙烯基硅橡胶的复合材料的变化率下降至5.6%。在-75℃低温拉伸测试中,未添加苯基乙烯基硅橡胶的复合材料拉伸强度变化率为118%,添加94份苯基乙烯基硅橡胶的复合材料的变化率下降至38.6%。
Composites with different ratios of vinyl silicone rubber and phenyl vinyl silicone rubber were prepared,and the mechanical properties,flame retardancy,moisture-heat aging resistance,low-temperature compression resistance,and low-temperature tensile properties of the composites with different contents of phenyl vinyl silicone rubber were investigated.The results showed that with the increase of the content of phenyl vinyl silicone rubber in the composites,the flame retardancy level of the composites gradually increased from unrated level to V0 level.The tensile strength of the composites with no phenyl silicone rubber was 32.2% after 48h of thermo-oxidative aging,and the rate of change of the composites with 94 parts of phenyl vinyl silicone rubber was reduced to 5.6%.In the low-temperature tensile test at -75℃,the change in tensile strength was 118% for the composite with no added phenyl silicone rubber and decreased to 38.6% for the composite with 94 parts of phenyl vinyl silicone rubber.
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基金资助
宁波市青年科技创新领军人才计划(2023QL051);宁波市重大科技任务攻关项目(2022Z097);浙江省自然科学基金(LTGS23E030003);宁波市自然科学基金(2021J072)
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