不同温度下杜仲胶/天然橡胶共混硫化胶性能研究  

Properties of Eucommia Ulmoides gum/natural rubber blends at different temperature

作　　者：宁永刚 王琎 康海澜 杨凤 方庆红 

机构地区：[1]三橡股份有限公司,辽宁沈阳110144 [2]沈阳化工大学材料科学与工程学院,辽宁沈阳110142

出　　处：《弹性体》2018年第1期30-34,共5页China Elastomerics

基　　金：国家重点研发计划课题资助项目(2017YF130306902)

摘　　要：将杜仲胶(EUG)与天然橡胶(NR)进行共混硫化,对EUG/NR共混硫化胶在不同温度下的力学性能和流变性能进行了研究。结果表明,在相同温度条件下,共混硫化胶的应力-应变曲线、抗拉强度和断裂伸长率都随着EUG含量的增加而下降;当EUG用量为10~30份时,抗拉强度和断裂伸长率较好。在不同温度下,共混硫化胶的抗拉强度、撕裂强度均随着温度的升高而逐渐降低;高温条件下,加入20~30份EUG时,断裂伸长率较高。在100℃以上且EUG用量较小时,EUG/NR共混胶的黏度、储能模量及损耗模量曲线呈上升趋势;在80℃以上且EUG用量超过30份时,随着EUG用量的增加,曲线呈下降趋势。In this article,Eucommia Ulmoides gum(EUG)and natural rubber(NR)were blended and vulcanizated.The vulcanizing properties,mechanical properties at high temperature and rheological properties were characterized.The results showed that at the same temperature,the tensile strength,elongation at break and stress-strain curves are decreased with the increase of EUG contents,when the amount of EUG is from 10 phr to 30 phr,the tensile strength,elongation at break are at high value.At the different temperature,the lower stress leads to the higher strain,the tensile strength and elongation at break are decreased because the temperature is increased.The temperature is higher,the elongation at break is higher when the EUG are 20 phr and 30 phr.The ratio of EUG is lower,and the complex visosity,storage modulus and loss modulus of EUG/NR blends are higher.Over 80 ℃ and over 30 phr EUG,the curves show the trend of decline.

关 键 词：杜仲胶 天然橡胶 硫化胶 共混胶 性能 

分 类 号：TQ332[化学工程—橡胶工业]