摘要
以滑石粉为填料,采用熔融共混法制备了PBAT/滑石粉复合材料。利用力学性能测试、热重分析(TGA)、维卡软化温度测试和差示扫描量热分析(DSC)等测试方法,研究了滑石粉对复合材料性能的影响。结果表明,加入滑石粉后,PBAT/滑石粉复合材料的拉伸强度、断裂伸长率明显减小,而冲击强度显著提高。当滑石粉含量小于20%时,复合材料的初始分解温度、最大热分解速率温度的降低幅度较小,分别下降了0.7、2℃;当滑石粉含量为40%时,复合材料的维卡软化温度达到最大,其值为107.2℃。由于滑石粉具有异相成核作用,PBAT放热峰位置向高温区移动,当滑石粉含量为20%时,复合材料的结晶峰温度、初始结晶温度及结晶度均达到最大值,分别为83.92℃、92.65℃及15.83%,与纯PBAT相比得到明显提高。
PBAT matrix composite was prepared by melt blending which filled with talc powder.Changes of properties of composite were analyzed with mechanical property test,thermogravimetric analysis(TGA),Vicat soften temperature test and differential scanning calorimetry(DSC),respectively.The results demonstrated that talc powder reduced tensile strength and elongation at break,but increased impact strength efficiently.When the dosage of talc powder were less than 20%,the initial decomposition temperature,temperature of maximum degradation rate declined slightly,had reduced by 0.7,2.0 ℃ as compared with pure PBAT.When the dosage of talc powder were 40%,the composite reached the highest value,were 107.2 ℃.The talc powder had the effect of heterogeneous nucleation in crystallization,increased the exothermic peak temperature of PBAT,when the dosage of talc powder were 20%,the crystallization peak temperature,initial crystallization temperature and crystallinity of composite reached the highest value,were 83.92 ℃,92.65 ℃ and 15.83%,that improved obviously as compared with pure PBAT.
作者
熊煦
李娜
冯潮
马立波
李珊珊
陈晓松
XIONG Xu;LI Na;FENG Chao;MA Libo;LI Shanshan;CHEN Xiaosong(Institute of Chemical and Pharmaceutical Engineering,Changzhou Institute of Engineering Technology,Changzhou,Jiangsu 213164,China;School of Materials Science and Engineering,Changzhou University,Changzhou,Jiangsu 213164,China)
出处
《塑料》
CAS
CSCD
北大核心
2023年第4期50-53,136,共5页
Plastics
基金
常州工程职业技术学院卓越人才培养改革试点项目(ZY2019-01)。
关键词
PBAT
滑石粉
复合材料
力学性能
热性能
结晶熔融
PBAT
talc powder
composite
mechanical properties
thermal stability
crystallization and melting behavior
