摘要
通过熔融共混制备聚乳酸/热塑性淀粉/氮化硼/碳纳米管(PLA/TPS/BN/CNT)复合材料,探究BN和CNT对复合材料力学性能、耐热性能和导热性能的影响。结果表明:随着BN含量的提高,复合材料的导热性能和耐热性能提高。加入CNT能够进一步提高复合材料的导热系数、拉伸强度和冲击强度。当加入50份BN和3份CNT,PLA/TPS/BN/CNT复合材料的综合性能良好,拉伸强度、缺口冲击强度和拉伸模量分别达到42.2 MPa、1.84 kJ/m^(2)和402 MPa,导热系数可以达到1.06 W/(m·K),初始热分解温度提高27.5℃。填充BN和CNT是提高PLA/TPS共混物导热性能的有效方法。
Polylactic acid/thermoplastic starch/boron nitride/carbon nanotube(PLA/TPS/BN/CNT) composites were prepared by melt blending. The effects of BN and CNT on the mechanical properties, thermal stability and thermal conductivity of the composites were investigated. The results show that with the increasing of BN content, the thermal conductivity and the initial thermal decomposition temperature of the composite are increased. The thermal conductivity,tensile strength and impact strength of the composites can further increase by adding CNT. When the content of BN and CNT are 50 phr and 3 phr, respectively, the PLA/TPS/BN/CNT composite has good comprehensive properties. The tensile strength, impact strength and tensile modulus of the composite can reach 42.2 MPa, 1.84 kJ/m^(2)and 402 MPa, respectively.The thermal conductivity of the composite can reach 1.06 W/(m·K) and the initial thermal decomposition temperature is increased by 27.5 ℃. Filling both BN and CNT is an effective method to increase the thermally conductivity of PLA/TPS blends.
作者
周熠成
张勇
王林达
霍文军
ZHOU Yi-cheng;ZHANG Yong;WANG Lin-da;HUO Wen-jun(School of Chemistry and Chemical Engineering,Shanghai Jiao Tong University,Shanghai 200240 China;Top Green World Biotechnology Co.,Ltd.,Shanghai 200240,China)
出处
《塑料科技》
CAS
北大核心
2022年第6期12-17,共6页
Plastics Science and Technology
关键词
聚乳酸
热塑性淀粉
氮化硼
碳纳米管
导热系数
Polylactic acid
Thermoplastic starch
Boron nitride
Carbon nanotube
Thermal conductivity
作者简介
联系人:张勇,yong_zhang@sjtu.edu.cn。
