A nitrile functionalized graphene filled ethylene propylene diene terpolymer rubber composites with improved heat resistance

作者：Lei, Yajie^*; He, Jiangping; Zhao, Qi; Liu, Tao^*

来源：Composites Part B: Engineering , 2018, 134(Feb.): 81-90.

DOI：10.1016/j.compositesb.2017.09.051

• Functionalized graphene
• Ethylene propylene diene terpolymer rubber
• Heat resistance
• Mechanical properties

Ethylene propylene diene terpolymer rubber (EPDM) is susceptible to temperature, and heat can greatly increase the molecular mobility which degrades the mechanical properties of a rubber part. To overcome this problem, EPDM composites containing various nitrile functionalized graphene (GN-CN) were prepared and investigated for the effects of surface modification on the mechanical properties under low and high temperature. Results indicated that, the tensile strength of 3phr GN-CN filled EPDM composite reaches 11.8 and 6.0 MPa at 25 degrees C and 70 degrees C, respectively, which is 63.9% and 100% higher than that of unfilled one. Meanwhile, the strength loss of the EPDM/GN-CN composite under 70 degrees C is 49.1%, which is 9.2% lower than that of EPDM. It was demonstrated that, the reaction of the nitrile groups is benefit to the tensile strength and heat resistance improving of EPDM.

• 出版日期2018-2-1
• 单位中国工程物理研究院