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《工程塑料应用》 2019年第08期
DOI:10.3969/j.issn.1001-3539.2019.08.010
石墨烯对再生PVDF复合材料性能的影响
谭寿再1,刘彪2,李建钢1,卢恩尧1,林嘉定1,史智2
1.广东轻工职业技术学院,广东省高分子材料先进加工工程研究中心,广州 510300; 2.五邑大学智能制造学部,广东江门 529030 
Effect of Graphene on Performance of Recycled PVDF Composites
Tan Shouzai1, Liu Biao2, Li Jiangang1, Lu Enyao1, Lin Jiading1, Shi Zhi2
1. Advanced Research Center for Polymer Processing Engineering of Guangdong Province, Guangdong Industry Polytechnic, Guangzhou 510300, China; 2. School of Intelligent Manufacturing, Wuyi University, Jiangmen 529030, China 
摘要:利用新型非对称同向双螺杆挤出机制备再生聚偏氟乙烯(PVDF)/石墨烯复合材料,通过扫描电子显微镜、差示扫描量热仪、同步热分析仪、电阻率测试仪、电子万能试验机等手段对复合材料结构和性能进行表征测试。结果表明,石墨烯在PVDF基体中分散均匀,未见明显的团聚现象;在实验范围内,复合材料的导电性能随着石墨烯含量的增加而提高,添加5%质量分数石墨烯的复合材料体积电阻率为8.98×108 Ω·m,表面电阻率为1.18×1012 Ω,电导率由不加石墨烯时的2.34×10-14 S/m提高到1.68×10-9 S/m。复合材料试样的拉伸强度在石墨烯质量分数3%时有最大值30.2 MPa,比未加石墨烯的PVDF提高了22.6%,断裂伸长率则提高了80%。石墨烯能提高复合材料的热稳定性能,添加5%石墨烯试样的最大降解温度为383℃,比未加石墨烯的PVDF提高了16.1℃。 
Abstract:The recycled polyvinylidene fluoride(PVDF)/graphene composites were prepared by a new asymmetric co-rotating twin-screw extruder. The structure and the performance of the composites were characterized and tested by means of scanning electron microscope, differential scanning calorimeter, simultaneous thermal analyzer, resistivity tester and electronic universal testing machine. The results showed that graphene was evenly dispersed in PVDF matrix and no obvious agglomeration was observed. Within the scope of the experiment, the conductivity of PVDF/graphene composites increased with the increase of graphene content. The volume resistivity was 8.98×108 Ω·m, along with the surface resistivity of 1.18×1012 Ω, and the conductivity increased from 2.34×10-14 S/m to 1.68×10-9 S/m when the content of graphene was 5%. The maximum tensile strength of the composite samples reached 30.2 MPa when graphene was added at 3% content, 22.6% higher than that of PVDF without graphene, and 80% higher for elongation at break. Graphene could also improve the thermal stability of the composites. The maximum degradation temperature of 5% graphene samples was 383℃, 16.1℃ higher than that of PVDF without graphene. 
关键词:石墨烯;聚偏氟乙烯;复合材料;电性能;力学性能 
Keywords:graphene; polyvinylidene fluoride; composite; electrical property; mechanical property 
基金:广东省科技计划项目(2016A010103046),广东高校工程中心建设滚动项目(2013 CXZDB004) 
本文引用格式:
谭寿再,刘彪,李建钢,等.石墨烯对再生PVDF复合材料性能的影响[J].工程塑料应用,2019,47(8):48-53.
Tan Shouzai,Liu Biao,Li Jiangang,et al. Effect of graphene on performance of recycled PVDF composites[J]. Engineering Plastics Application,2019,47(8):48-53. 

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