超导炭黑/WRT填充EPDM性能研究  

Study on performance of superconducting carbon black/WRT filled EPDM

作　　者：王国志[1] 王悦 孔壮 周佳 Wang Guozhi;Wang Yue;Kong Zhuang;Zhou Jia(Xuzhou Vocational College of Industrial Technology,Xuzhou 221140,Jiangsu,China)

机构地区：[1]徐州工业职业技术学院

出　　处：《橡塑技术与装备》2019年第13期6-12,共7页China Rubber/Plastics Technology and Equipment

摘　　要：采用EPDM作为基体材料,填充了不同含量的胶粉和超导炭黑、对EPDM橡胶粉填充变量的性质进行了研究,并研究了不同含量的胶粉在EPDM中对机械性能的影响。随着胶粉从40份增加到80份,胶料A1、A2、A3最大伸长率从466%减少到267%,胶料B1、B2、B3最大伸长率从459%减小到293%。A1、A2、A3最大强度从4.58 MPa减小到2.82 MPa,B1.B2.B3橡胶强度从3.72MPa减小到2.06MPa。A1、A2、A3永久变形从32%减小到24%,B1、B2、B3橡胶永久变形从40%减小到32%,A1、A2、A3的100%定伸应力先减小到1.73 MPa后增加到2.00 MPa,B1、B2、B3橡胶的100%定伸应力先从1.62MPa增大到1.87MPa然后减小到1.55MPa。A1、A2、A3试片的撕裂强度从32.67kN/m减小到22.46kN/m,B1、B2、B3撕裂强度从26.43 kN/m增加到27.50 kN/m然后减小到17.50 kN/m。表面电阻从9×10^7Ω下降到3×10^7Ω,B1、B2、B3表面电阻从8×10^7Ω下降到2×10^7Ω。A1、A2、A3体积电阻从6×10^9Ω下降到2×10^9Ω,B1、B2、B3体积电阻从7×10^9Ω下降到1×10^9Ω。磨耗体积从1.30V减少到1.05V后增加到1.24 V。B1、B2、B3磨耗体积从1.19V减少到1.05V。胶料随着胶粉从40份增加到80份,屈挠5 000次A1胶无变化,A2胶有针孔,A3胶断裂;屈挠10 000次A1胶有针孔,A2胶有龟裂点,A3胶断裂。抗屈挠性能越来越差。B1、B2、B3同上。EPDM was used as the matrix material, filled with different content of rubber powder and superconducting carbon black. The properties of EPDM rubber powder filling variables were studied, and the effects of different content of rubber powder on mechanical properties in EPDM were studied. As the rubber powder increased from 40 to 80 phr, the maximum elongation of the rubber compound A1、A2、A3 decreased from 466% to 267%, and the maximum elongation of the rubber material B1、B2、B3 decreased from 459% to 293%.;A1、A2、A3 maximum intensity decreased from 4.58 MPa to 2.82 MPa, B1、B2、B3 rubber intensity decreased from 3.72 MPa to 2.06 MPa;A1、A2、A3 permanent deformation is reduced from 32% to24%, B1、B2、B3 permanent deformation is reduced from 40% to 32%;The 100% modulus of A1、A2、A3 is first reduced to 1.73 MPa and then increased to 2.00 MPa, the 100% modulus of B1、B2、B3 rubber increases from 1.62 MPa to 1.87 MPa and then decreases to 1.55 MPa;The tear strength of the A1、A2、A3 test piece decreased from 32.67 kN/m to 22.46 kN/m, and the B1、B2、B3 tear strength increased from 26.43 kN/m to 27.50 kN/m and then decreased to 17.50 kN/m;A1、A2、A3 surface resistance decreased from 9×10~7Ω to 3×107Ω, B1、B2、B3 surface resistance decreased from 8×10~7Ω to 2×10~7Ω;A1、A2、A3 volume resistance decreased from6×10~9Ω to 2 ×10~9Ω, B1、B2、B3 volume resistance decreased from 7×10~9 Ω to 1×10~9Ω. As the rubber powder is increased from 40 to 80 phr, when the rubber compound is flexed 5000 times, the A1 rubber compound has no change, the A2 rubber compound has pinholes, and the A3 rubber compound breaks;When the rubber compound is flexed 10000 times, the A1 rubber compound has pinholes, and the A2 rubber compound has crack points, A3 rubber compound breaks. The flexing resistance is getting worse,and B1、B2、B3 were the same as above.

关 键 词：EPDM 超导炭黑 表面电阻 胶粉 

分 类 号：TQ333[化学工程—橡胶工业]