乙烯-乙烯醇共聚物纳米复合材料的辐射效应  

Radiation Effect of EVOH/Inorganic Nanocomposites

作　　者：李海红[1] 赫然[1] 柳美华[2] 窦艳丽[1] 张万喜[2] 邓鹏飏[2] 

机构地区：[1]吉林大学材料科学与工程学院,吉林长春130000 [2]中国科学院长春应用化学研究所,吉林长春130022

出　　处：《高分子材料科学与工程》2008年第6期108-111,116,共5页Polymer Materials Science & Engineering

摘　　要：采用5万CiCo-60源进行辐照,制备了乙烯-乙烯醇共聚物TiO2纳米复合材料、SiO2纳米复合材料、ZnO纳米复合材料和有机蒙脱土纳米复合材料。分析了纳米粒子对体系力学性能的影响,研究了辐照剂量、不同基体、不同纳米填料及改性剂等实验条件对体系力学性能的影响。结果表明,以EVOH-68(乙烯醇基含量为68%)为基体的纳米复合材料经过辐照,力学性能明显下降,且下降幅度大。以EVOH-56(乙烯醇基含量为56%)为基体的纳米复合材料经过辐照,在小辐照剂量下力学性能提高,大剂量下力学性能下降,且下降幅度较小。EVOH-56/纳米ZnO体系与EVOH-56/纳米TiO2体系相比表现的更耐辐照。EVOH/TiO2 nanocomposites, EVOH/SiO2 nanocomposites, EVOH/ZnO nanocomposites and EVOH/MMT nanocomposites were prepared by ^60Co. Effects of different radiation, different group, different nano-composites and different experiment conditions on the mechanical properties were discussed. It is found that mechanical properties of irradiated nanocomposites based on EVOH-68 decrease dramatically, while the mechanical properties of irradiated nano-composites based on EVOH-56 improve at low radiation doses and decrease at high radiation doses, and in general have small changes. For nano-composites with different nano-fillers, different systems have different reactions to radiation. EVOH-56/nano-ZnO system exhibits better endurance to radiation than EVOH-56/nano-TiO2 system.

关 键 词：乙烯-乙烯醇共聚物 纳米复合材料 辐射效应 

分 类 号：TB383[一般工业技术—材料科学与工程]