Zhang Xingli, Zhang Jinglan, Wang Ruihong
College of Mechanical and Electrical Engineering, Northeast Forestry University, Harbin 150040, China.
Key Laboratory of Functional Inorganic Material Chemistry, Heilongjiang University, Harbin 150010, China.
Polymers (Basel). 2019 Aug 19;11(8):1365. doi: 10.3390/polym11081365.
Wood plastic composites (WPCs) incorporating graphene nano-platelets (GNPs) were fabricated using hot-pressed technology to enhance thermal and mechanical behavior. The influences of thermal filler content and temperature on the thermal performance of the modified WPCs were investigated. The results showed that the thermal conductivity of the composites increased significantly with the increase of GNPs fillers, but decreased with the increase of temperature. Moreover, thermogravimetric analysis demonstrated that coupling GNPs resulted in better thermal stability of the WPCs. The limiting oxygen index test also showed that addition of GNPs caused good fire retardancy in WPCs. Incorporation of GNPs also led to an improvement in mechanical properties as compared to neat WPCs. Through a series of mechanical performance tests, it could be concluded that the flexural and tensile moduli of WPCs were improved with the increase of the content of fillers.
采用热压技术制备了含有石墨烯纳米片（GNPs）的木塑复合材料（WPCs），以提高其热性能和力学性能。研究了热填料含量和温度对改性WPCs热性能的影响。结果表明，复合材料的热导率随GNPs填料含量的增加而显著提高，但随温度的升高而降低。此外，热重分析表明，偶联GNPs可使WPCs具有更好的热稳定性。极限氧指数测试还表明，添加GNPs可使WPCs具有良好的阻燃性。与纯WPCs相比，加入GNPs还可使力学性能得到改善。通过一系列力学性能测试可以得出结论，WPCs的弯曲模量和拉伸模量随填料含量的增加而提高。
