改性聚乙烯作为低红外辐射材料的研究  

Study of Modified Polyethylene Used as Low Infrared Radiation Material

作　　者：邵春明[1] 徐国跃[1] 郭腾超[1] 余慧娟[1] 李凤雷[1] 

机构地区：[1]南京航空航天大学材料科学与技术学院,江苏南京210016

出　　处：《红外技术》2008年第7期412-415,共4页Infrared Technology

基　　金：武器装备预研项目;国家自然科学基金重大研究计划(90505008);973项目(xxxxx03zt2-06-ZZT2)

摘　　要：采用正交实验法制备了不同接枝率的高密度聚乙烯接枝马来酸酐(HDPE-g-MAH)。测试了改性聚合物的红外透明性、红外发射率(8～14μm)、相变潜热及其涂膜的力学性能。结果表明,HDPE-g-MAH有较高的红外透明性;随着接枝率的增加,其发射率先减小后增大,涂膜力学性能先变好后变差,当接枝率为1.05%时,发射率最低为0.250,附着力为2级、铅笔硬度为5H;HDPE改性后相变潜热由141.5 J/g增大到202.8 J/g。根据极差分析得到了最优方案,制得的粘合剂可作为低红外发射率兼有控温功能的红外隐身材料。HDPE-g-MAH with different grafting rate is prepared by orthogonal test. The infrared transmittance of modified polyethylene is explored by FTIR. The infrared emissivities （8-14μm） of the coatings are measured by IR-2 infrared radiometer. Thermal property of HDPE-g-MAH is analyzed by DSC. Mechanical properties of the coatings are also tested. The results show that, HDPE-g-MAH has high infrared transmittance. The infrared emissivities of modified polyethylene reduce firstly and then increase as the increasing of the grafting rate, Mechanical properties are also changed for the increasing of grafting rate. Enthalpy of phase change increase from 141.5J/g to 202.8J/g. The optimum condition to prepare coatings are got by the analysis of range, which can be used as temperature-controlled material with low-emissivity.

关 键 词：聚乙烯 红外隐身 发射率 粘合剂 相变材料 

分 类 号：TQ325.12[化学工程—合成树脂塑料工业] TN976[电子电信—信号与信息处理]