摘要
以LDPE/EVA(质量比为90/10)为基材,添加SiO2制备了LDPE/SiO2复合膜,对该复合膜进行了力学性能,透气、透湿性能和结晶性能的测试.结果表明:添加SiO2后,LDPE/SiO2复合体系的力学性能有所下降;O2和CO2气体透过系数先增加后下降;水蒸气透过系数先增加后趋缓;LDPE复合体系的成核速率和结晶速率增加,结晶温度略有提高.形成的球晶尺寸变小,数量增多.
Based on LDPE/EVA（90/10）,SiO2 added of LDPE/SiO2 composite film was prepared. The tensile strength, elongation,gas and moisture permeability and crystallization properties of the LDPE composite films were investigated. The results show that with increasing content of SiO2 ,mechanical properties of LDPE composite are decreased. However,the gas permeability of LDPE composite film first get significantly enhanced then reduced,the moisture permeability first get significantly enhanced then easing up. Meanwhile,the crystal nucleation and crystallization rate of LDPE/SiO2 composite film get accelerated,and the crystallization temperature increased a little,the quantity of spherocrystal increased and lamellar thickness reduced.
出处
《天津科技大学学报》
CAS
2009年第4期40-44,共5页
Journal of Tianjin University of Science & Technology
关键词
LDPE
SIO2
透气
透湿
结晶
LDPE
SiO2
gas permeation
moisture permeation
crystallization
