紫外辐照对EVOH/纳米SiO_2复合材料性能的影响  

The Effect of UV-Irradiation on the Properties of EVOH/SiO_2 Nanocomposites

作　　者：范淑红[1] 刘亦武[1,2] 温乾[2] 段利艳[2] 

机构地区：[1]湖南工业大学包装与材料工程学院,湖南株洲412007 [2]湖南工业大学包装新材料与技术重点实验室,湖南株洲412007

出　　处：《包装学报》2010年第2期6-10,共5页Packaging Journal

基　　金：国家自然科学基金资助项目(10972076);湖南省科技计划基金资助项目(2009GK3127);湖南工业大学研究生创新基金资助项目(CX0903)

摘　　要：用硅烷偶联剂γ-氨丙基三乙氧基硅烷(KH550)对纳米SiO2进行改性,采用熔融共混法制备了含SiO2的质量分数为5%的乙烯-乙烯醇共聚物(EVOH)/纳米SiO2复合材料,并吹塑成薄膜,将复合膜进行不同时间、不同强度的紫外辐照处理。利用FTIR、TEM、SEM对纳米SiO2和复合材料进行了表征分析,测试了复合材料紫外辐照处理前后的阻隔性能和力学性能。结果表明:纳米SiO2与偶联剂KH550形成化学键合,经紫外辐照处理的EVOH/纳米SiO2复合膜的力学性能、阻隔性能得到了较大地提高。Nano-SiO2 modified by y -aminopropyl triethoxysilane（KH550） was used to prepare the ethylene-vinyl alcohol copolymer（EVOH）/nano-SiO2 composites through melt-compounding method and the composites were blown into films. The films were treated by UV irradiation with different treating time and intensity. Nano-SiO2 was characterized by FT-IR, TEM and SEM, the barrier properties and mechanical properties of treated and untreated composites were tested. The results showed that chemical bonds were formed between nano-SiO2 and silane coupling agent KH550, and the barrier properties, mechanical properties of the EVOH/nano-SiO2 composites were improved greatly.

关 键 词：EVOH 纳米SIO2 紫外辐照 阻隔性能 

分 类 号：TB33[一般工业技术—材料科学与工程] TB383