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以双螺杆挤出机为反应器，制备了一系列硅烷接枝高密度聚乙烯。对接枝物的ＩＲ分析、熔体流动速率的测定、交联物凝胶含量及力学性能的测定，研究了引发剂（ＤＣＰ）及硅烷含量对接枝物的影响，结果表明：在实验研究ＤＣＰ用量范围内，ＨＤＰＥ／ＤＣＰ混合物的熔体挤出产物未出现可测凝胶；当ＤＣＰ为１４‰，硅烷含量为１６％时，接枝物的吸光度比达到最大值，其交联后的凝胶含量为７１％。力学性能测试结果表明，随着凝胶含量的增加，断裂伸长率下降，拉伸屈服强度较之ＨＤＰＥ有所增加。
A series of silane-grafted high-density polyethylene was prepared using a twin-screw extruder as reactor. IR analysis of the graft, the determination of the melt flow rate, gel content and mechanical properties of crosslinked products, the effects of initiator (DCP) and silane content on the graft were studied. The results showed that: in the experimental study In the range of DCP, there is no measurable gel in the melt extrusion products of HDPE / DCP mixture. When the DCP is 14 ‰ and the silane content is 16%, the absorbance ratio of the graft reaches the maximum, The gel content after crosslinking was 71%. Mechanical properties test results show that with the increase of gel content, the elongation at break decreases and the tensile yield strength increases compared with that of HDPE.