研究了不同紫外光强下辐照的HDPE结构和性能变化.在相同的辐照环境温度和辐照时间下,引入HDPE分子链的C-O、C=O和C(=O)O等含氧基团数量随紫外光强提高而增加,提高紫外光强加快了HDPE的官能化,但辐照HDPE中的凝胶含量也有所增加.紫外辐照不影响HDPE的晶型和晶胞参数,但会引起它的熔融温度下降、结晶度提高以及亲水性的改善,其变化幅度随紫外光强提高而加大.辐照HDPE作为增容剂加到HDPE/PVA中,提高了复合材料的力学性能.较高紫外光强下辐照的HDPE表现出更好的增容作用.
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