生胶门尼黏度对SBR1721和SBR1712性能的影响  

Effect of Mooney viscosity of raw rubber on properties of SBR1712 and SBR1721

作　　者：张守汉[1] 李昌根 邵婧 苟建军 刘金锁 郝岱宗 冯旭[1] 肖晔[1] ZHANG Shouhan;LI Changgen;SHAO Jing;GOU Jianjun;LIU Jinsuo;HAO Daizong;FENG Xu;XIAO Ye(Lanzhou Petrochemical Company,PetroChina,Lanzhou 730060,China)

机构地区：[1]中国石油兰州石化公司,甘肃兰州730060

出　　处：《弹性体》2021年第4期47-49,69,共4页China Elastomerics

摘　　要：研究了丁苯橡胶SBR1712(结合苯乙烯质量分数为23.5%)和SBR1721(结合苯乙烯质量分数为40.0%)的生胶门尼黏度(M)对混炼胶门尼黏度(M_(b))、硫化胶的35 min 300%定伸应力(σ)、拉伸强度(τ)及扯断伸长率(λ)的影响。结果表明,生胶的M增大,SBR1712和SBR1721的M_(b)、σ、τ和λ均呈线性升高,且M值每增加1个单位,SBR1712和SBR1721的M_(b)、σ、τ、λ分别升高0.12和0.19、0.03 MPa和0.32 MPa、0.06 MPa和0.32 MPa、3.05%和1.14%。M升高幅度相同时,SBR1712的M_(b)、σ、τ增长幅度低于SBR1721,而λ增长幅度高于SBR1721。In this paper,the effects of the raw rubber Mooney viscosity(M)on the properties of SBR1712(bound styrene at 23.5%)and SBR1721(bound styrene at 40.0%),such as blending rubber Mooney viscosity(M_(b)),modulus at 35 min(σ),tensile strength(τ)and elongation at break(λ),were investigated.The results show that as the raw rubber Mooney viscosity increases,M_(b),σ,τandλof SBR1712 and SBR1721 all increase linearly.For every 1 unit increase in M value,M_(b),σ,τandλof SBR 1712 and SBR1721 increase by 0.12 and 0.19,0.03 MPa and 0.32 MPa,0.06 MPa and 0.32 MPa,3.05%and 1.14%respectively.When M rises the same,the growth rates of M_(b),σandτof SBR1712 are lower than that of SBR1721,whileλis higher than SBR1721.

关 键 词：丁苯橡胶 门尼黏度 定伸应力 拉伸强度 扯断伸长率 

分 类 号：TQ333.1[化学工程—橡胶工业]