【摘要】 采用PVC树脂和木粉加入发泡剂制得PVC/木粉发泡复合材料。通过差示量热扫描分析(DSC)考察了偶氮二甲酰胺(AC)、NaHCO3及AC/NaHCO3/PVC稳定剂共混物的热分解特性。研究了木粉的不同粒径、AC发泡剂、NaHCO3、交联剂DCP和ACR的含量对复合材料力学性能的影响。结果表明:通过发泡能有效降低材料的密度;当AC含量为PVC用量的1%,木粉粒径为20目,NaHCO3与AC用量比为1∶1,DCP含量为PVC用量的0.4%,ACR含量为PVC用量的8%,所得的发泡复合材料综合性能较好。更多还原

【Abstract】 The foamed PVC/wood-flour composite（WPC） was prepared from PVC and rice husk powder with blowing agent.AC,NaHCO₃ and blends of AC/NaHCO₃/stabilizing agents were investigated by DSC.The effect of the dimension of wood flour,the effects of the contents of AC,NaHCO₃,DCP and ACR on the mechanical properties of WPC were studied.The results showed that the overall property of the composite was the optimum when the content of AC was 1% of PVC,the dimension of the wood flour was 20 mesh,the ratio of the NaHCO₃ and AC was 1∶1,the content of DCP was 0.4% of PVC,ACR was 8% of PVC and the content of CPE was 10% of PVC.And the foaming agent decreased the density of the composite effectively.更多还原