HDPE/杨木粉复合发泡材料的制备及其性能研究  

Preparation and Characterization of HDPE / Poplar-wood Foamed Composites

作　　者：曾广胜[1] 黄鹤[1] 张礼[1] 

机构地区：[1]湖南工业大学包装新材料与技术重点实验室,湖南株洲412008

出　　处：《塑料工业》2015年第10期66-70,共5页China Plastics Industry

基　　金：国家科技支撑计划(2014BAD02B06);国家自然科学基金(61174100);湖南省科技计划项目(2010JT4039);湖南省自然科学杰出青年基金(13JJ1024);湖南省普通高校产业化培育项目(12CY015)

摘　　要：以杨木粉为主要填充剂,偶氮二甲酰胺(AC)与氧化锌(ZnO)复配物为发泡剂,高密度聚乙烯(HDPE)为高分子基材,采用两步模压发泡法制备了HDPE/木粉复合发泡材料。研究了不同质量分数的木粉和不同含量的AC/ZnO复配发泡剂对复合发泡材料的发泡性能、回弹性能以及吸水性能的影响。结果表明,随着木粉或者发泡剂含量的增加,复合材料的发泡性能呈现出先变强后减弱的趋势,而吸水率则持续上升,一段时间后达到一个饱和值;当木粉质量分数为30%时,复合材料的表观密度和含气率达到最大值,当AC/ZnO复配发泡剂质量分数在15%时,复合发泡材料的表观密度、回弹性能表现出最优。With poplar-wood powder as filler, the mixture of azodicarbonamide （AC） and zinc oxide （ZnO） as foaming agent and high-density polyethylene （HDPE） as the polymer matrix, the HDPE/poplar- wood foamed composite was prepared by two-step molded method. The effects of poplar-wood flour and foaming agent （AC/ZnO） loadings foamed composites were explored on foaming performance, rebound resilience and water absorption of the All the results suggested that： with the increase of the wood powder or foaming agent loadings, the foaming performance of the composites had a trend of strengthening first and then weakening, and the water absorption kept rising for some time until it approached a saturation value. When the poplar-wood powder loading reached 30wt%, the apparent density and void fraction of the composite reached their peak. The apparent density and the resilience of the composite obtained the best values with the content of AC/ZnO mixture of 15wt%.

关 键 词：模压发泡 高密度聚乙烯/杨木粉复合材料 气泡 团聚 回弹性 吸水率 发泡性能 

分 类 号：TQ317[化学工程—高聚物工业] TB33[一般工业技术—材料科学与工程]