通过凝胶含量测定、力学性能试验以及熔体流动性能测试等手段，研究了共混（反应）时间对密炼法和挤出法反应性PP/EPDM共混合金性能的影响及其机理。

The effect of blending time on the properties of reactive PP/EPDM alloy was studied via the analysis of gel content, mechanical properties, melt flow behaviour and morphology.

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通过反应挤出法对聚丙烯（PP）进行硅烷接枝交联改性获得高熔体强度PP（HMSPP），并对HMSPP的发泡性能及影响因素进行了研究。

The producing methods of HMSPP were discussed, including direct polymerization, radiation grafting and cross-linking, silane grafting and cross-linking, and so on.

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