偶联剂对HDPE基竹塑复合材料性能的影响  

Effect of MAH-g-PP on properties of bamboo flour( BF) / high density polyethylene( HDPE) composites

作　　者：何文[1] 阮氏香江[1,2] 蒋身学[1] 张齐生[1] 

机构地区：[1]南京林业大学材料科学与工程学院,江苏南京210037 [2]越南林业大学林产加工学院,越南河内156204

出　　处：《南京林业大学学报（自然科学版）》2014年第6期110-114,共5页Journal of Nanjing Forestry University：Natural Sciences Edition

基　　金：南京林业大学高层次人才引进基金项目(163020097);"十二五"国家科技支撑计划(2012BAD30B01);江苏高校优势学科建设工程资助项目(PAPD)

摘　　要：以高密度聚乙烯(HDPE)、竹粉(BF)为原料,马来酸酐接枝聚丙烯(MAH-g-PP)作为偶联剂,通过混炼、平板热压成型制备竹粉/HDPE复合材料,研究了马来酸酐接枝聚丙烯添加量(0、2%、5%、8%)对竹粉/HDPE复合材料吸湿性、吸水性、弯曲强度、拉伸强度以及抗冲击强度等性能的影响。结果表明:MAH-g-PP能显著改善竹粉/HDPE复合材料的吸湿、吸水性能,明显提高复合材料的力学性能;当MAH-g-PP添加量为5%时,复合材料的吸湿、吸水率最低,静曲强度与弹性模量分别提高68%和30.4%,拉伸强度与抗冲击强度分别增长53.7%和75%;而当MAH-g-PP添加量为8%时,复合材料的力学性能在一定程度上有所降低。红外光谱(FTIR)分析显示,添加MAH-g-PP后竹粉的游离羟基与马来酸酐之间发生了酯化反应。In this work,maleic anhydride grafted polypropylenee（ MAH-g-PP） as coupling agent was added to high density polyethylene（ HDPE） and bamboo flour（ BF） composites which were processed by internal mixer and hot-pressing technology. The results showed that the properties of composites were significantly improved after adding MAH-g-PP. The optimum additive amount is 5%,at this level,the values of hygroscopicity and water absorption of composites were the smallest,and the values of modulus of rupture（ MOR） and modulus of elasticity（ MOE） were increased by 68% and30. 4%,respectively. The tensile strength and impact strength were increased by 53. 7% and 75%,respectively. However,when the additive amount of MAH-g-PP reached 8%,the values of MOR,tensile strength and impact strength decreased. Fourier transform infrared spectroscopy（ FTIR） confirmed that the grafting reaction happened between free hydroxyls of bamboo flour and acid anhydride of MAH-g-PP.

关 键 词：竹粉/高密度聚乙烯复合材料 马来酸酐接枝聚丙烯 吸湿性 酯化反应 

分 类 号：TS721[轻工技术与工程—制浆造纸工程]