填充油含量对丁苯橡胶1778和1723拉伸性能及1723硫化特性的影响

Shou-han ZHANG,Zhi-rong GUO,Yong-feng WANG,Feng-le WANG,Ji-cheng YING,Ye XIAO,Xu FENG

China Synthetic Rubber Industry（2020）

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Abstract

考察了填充油含量对丁苯橡胶(SBR) 1778和1723的拉伸性能及SBR 1723硫化特性的影响.结果表明,随填充油含量的增加,两种丁苯橡胶的定伸应力和拉伸强度均呈线性增大趋势,而扯断伸长率都线性下降,硫化时间均缩短.橡胶中的填充油质量分数每增加1％,两种丁苯橡胶的25,30,50 min的300％定伸应力分别增大0.025 MPa和0.028 MPa、0.063 MPa和0.053 MPa及0.023 MPa和0.019 MPa,拉伸强度分别提高0.069 MPa和0.079 MPa,扯断伸长率分别下降1.05％和1.13％;SBR1723的最大和最小转矩分别下降0.016 dN·m和0.023 dN·m,硫化时间t25、t50和t90分别缩短0.033 min、0.021 min和0.030 min.

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