结合苯乙烯质量分数对丁苯橡胶1778力学性能的影响
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摘要
以2种组分的丁苯橡胶(SBR)1778(门尼黏度为47、环烷油质量分数为27.14%的SBR-1和门尼黏度为49、环烷油质量分数为27.18%的SBR-2)为研究对象,考察了SBR 1778的结合苯乙烯质量分数对其25 min 300%定伸应力(M_(25))、35 min 300%定伸应力(M_(35))、50 min 300%定伸应力(M_(50))、拉伸强度及扯断伸长率的影响。结果表明,随着结合苯乙烯质量分数的升高,SBR 1778的M_(25)、M_(35)、M_(50)及拉伸强度均线性升高,但扯断伸长率线性下降。结合苯乙烯含量每升高1%,SBR-1的M_(25)、M_(35)及M_(50)分别增加0.07,0.04,0.05 MPa,拉伸强度增加约0.08 MPa,扯断伸长率降低约0.49%;SBR-2的M_(25)、M_(35)及M_(50)分别增加0.06,0.04,0.05 MPa,拉伸强度增加约0.08 MPa,扯断伸长率降低约0.57%。
Two components SBR 1778(SBR-1:Mooney viscosity 47, mass fraction of naphthene oil 27.14%.SBR-2:Mooney viscosity 49, mass fraction of naphthene oil 27.18%) were used as the research objects. The effects of mass fraction of bound styrene(B_s) of SBR 1778 on 25 min modulus at 300%(M_(25)), 35 min modulus at 300%(M_(35)), 50 min modulus at 300%(M_(50)), tensile strength and elongation at break were investigated. The results showed that M_(25), M_(35), M_(50) and tensile strength of SBR 1778 increased linearly with the increasing B_s, while the elongation at break decreased linearly. When the B_s increased by 1%, M_(25), M_(35) and M_(50) of SBR-1 increased 0.07, 0.04, 0.05 MPa, tensile strength increased 0.08 MPa and elongation at break decreased about 0.49%. And M_(25), M_(35) and M_(50) of SBR-2 increased 0.06, 0.04, 0.05 MPa, tensile strength increased about 0.08 MPa and elongation at break decreased about 0.57%.
Two components SBR 1778(SBR-1:Mooney viscosity 47, mass fraction of naphthene oil 27.14%.SBR-2:Mooney viscosity 49, mass fraction of naphthene oil 27.18%) were used as the research objects. The effects of mass fraction of bound styrene(B_s) of SBR 1778 on 25 min modulus at 300%(M_(25)), 35 min modulus at 300%(M_(35)), 50 min modulus at 300%(M_(50)), tensile strength and elongation at break were investigated. The results showed that M_(25), M_(35), M_(50) and tensile strength of SBR 1778 increased linearly with the increasing B_s, while the elongation at break decreased linearly. When the B_s increased by 1%, M_(25), M_(35) and M_(50) of SBR-1 increased 0.07, 0.04, 0.05 MPa, tensile strength increased 0.08 MPa and elongation at break decreased about 0.49%. And M_(25), M_(35) and M_(50) of SBR-2 increased 0.06, 0.04, 0.05 MPa, tensile strength increased about 0.08 MPa and elongation at break decreased about 0.57%.
引文
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[3]朱江涛. 国内环保橡胶油及环保充油丁苯橡胶的生产与应用现状[J]. 轮胎工业,2015,35(12):711-719.
[4]孙井侠,年成春,张戬,等. 辽河环保橡胶油系列产品的开发与应用[J]. 橡胶科技,2016,14(11):19-20.
[5]前文. 兰州石化工业化试生产环保充油丁苯橡胶[J]. 橡胶科技市场,2011,9(12):52.
[6]张守汉,王丰乐,阚成有,等.丁苯橡胶1778的门尼黏度对拉伸性能的影响[J].合成橡胶工业,2018,41(6):407-409.
[7]翁国文. 橡胶硫化[M]. 北京:化学工业出版社,2005:157.
[8]王艳秋. 橡胶塑炼与混炼[M]. 北京:化学工业出版社,2006:116.
[9]何曼君,陈维孝,董西侠. 高分子物理[M]. 上海:复旦大学出版社,1990:312-314.
[10]王晓琳,唐元晖,卢滇楠,译. 分子间力和表面力[M]. 北京:科学出版社,2014:98.