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Enhanced mechanical and thermal properties of electrically conductive TPNR/GNP nanocomposites assisted with ultrasonication

机译:超声辅助的导电TPNR / GNP纳米复合材料的增强的机械和热性能

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摘要

Thermoplastic natural rubber (TPNR) was compounded with graphene nanoplatelets (GNP) via ultrasonication and melt blending. The effects of ultrasonication period (1-4 hours) and GNP weight fraction (0.5, 1.0, 1.5 and 2.0 wt.%) on the mechanical, thermal and conductivity properties were investigated. Results showed that the 3 hours of ultrasonic treatment on LNR/GNP gave the greatest improvement in tensile strength of 25.8% (TPNR/GNP nanocomposites) as compared to those without ultrasonication. The TPNR nanocomposites containing 1.5 wt.% GNP exhibited the highest strength (16 MPa for tensile, 14 MPa for flexural and 11 kJm-2 for impact) and modulus (556 MPa and 869 MPa for tensile and flexural, respectively). The incorporation of GNP had enhanced the thermal stability. It can be concluded that the GNP had imparted the thermally and electrically conductive nature to the TPNR blend.
机译:通过超声处理和熔融共混将热塑性天然橡胶(TPNR)与石墨烯纳米片(GNP)混合。研究了超声处理时间(1-4小时)和GNP重量分数(0.5、1.0、1.5和2.0 wt。%)对机械,导热和导电性能的影响。结果表明,与未超声处理相比,在LNR / GNP上进行3小时超声处理后,TPNR / GNP纳米复合材料的拉伸强度最大提高了25.8%。含1.5 wt。%GNP的TPNR纳米复合材料表现出最高强度(拉伸强度为16 MPa,弯曲强度为14 MPa,冲击强度为11 kJm -2 )和模量(拉伸强度和弯曲强度分别为556 MPa和869 MPa) , 分别)。 GNP的掺入提高了热稳定性。可以得出结论,GNP已赋予TPNR共混物导热和导电的特性。

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