改性处理对汉麻增强聚丙烯复合材料性能及挥发性有机化合物释放的影响  

Effect of Modification Treatment on the Properties and Volatile Organic Compounds Emission of Hemp Reinforced Polypropylene Composites

作　　者：鲍鑫 王春红[1,2,3] 任子龙[1,2,3] 左恒峰[3] BAO Xin;WANG Chun-hong;REN Zi-long;ZUO Heng-feng(School of Textile Science and Engineering,Tianjin Polytechnic University,Tianjin 300387,China;Key Laboratory of Advanced Textile Composite Materials,Tianjin Polytechnic University,Tianjin 300387,China;State Keylaboratory of Automotive Safety and Energy,Tsinghua University,Beijing 100084,China)

机构地区：[1]天津工业大学纺织科学与工程学院,天津300387 [2]天津工业大学教育部与天津市共建先进复合材料重点实验室,天津300387 [3]清华大学汽车安全与节能国家重点实验室,北京100084,China

出　　处：《塑料工业》2019年第12期83-87,96,共6页China Plastics Industry

基　　金：国家自然科学基金(11802205);清华大学汽车安全与节能国家重点实验室开放基金资助项目(FK1811)

摘　　要：为了降低汉麻增强聚丙烯(HF/PP)复合材料的挥发性有机化合物(VOC)释放量,分别以己二酸二酰肼、乙烯脲和三聚氰胺作为改性剂,通过热压成型工艺,制备了不同改性处理HF/PP复合材料。利用热重-质谱联用仪(TG-MS)等技术手段研究了不同试剂改性对HF/PP复合材料的VOC释放量、气味、力学性能和微观形貌的影响。研究表明,三种试剂改性后的HF/PP复合材料的VOC释放量均明显降低。其中,与未处理、己二酸二酰肼改性、乙烯脲改性相比,三聚氰胺改性HF/PP复合材料的VOC释放量最低,分别降低了43.90%、16.67%、3.61%,而甲醛、乙醛释放量相比未处理降低了25.25%、52.43%,同时HF/PP复合材料的气味降低了一个等级,为2级,有气味但无刺激性气味,力学性能也为最优,相较于未处理,拉伸强度、拉伸模量、弯曲强度和弯曲模量分别提高了43.8%、28.73%、23.13%和10.12%。In order to reduce the emission of volatile organic compounds( VOC) from hemp reinforced polypropylene( HF/PP)composites,it was modified with adipic acid dihydrazide,ethylene urea and melamine.Different modified HF/PP composites were prepared by a hot press forming process.The effects of different reagent modification on VOC emission,odor,mechanical properties and morphology of HF/PP composites were investigated by means of thermogravimetry-mass spectrometry( TG-MS).The results show that the VOC emission of the three modified HF/PP composites is reduced.Among them,melamine modified HF/PP composites have the lowest VOC emission content,and the total VOC emission is 43.90%,16.67%,and 3.61% lower than untreated,adipic dihydrazide modified and ethylene urea modified,respectively.The formaldehyde and acetaldehyde emission amount is reduced by 25.25% and 52.43% comparing with the untreated.And the melamine modified HF/PP composite has a lower odor,grade 2,no irritating odor.The mechanical property is also optimal.Comparing with untreated,tensile strength,tensile modulus,flexural strength and flexural modulus are increased by 43.8%,28.73%,23.13% and 10.12%,respectively.

关 键 词：改性 汉麻纤维 聚丙烯复合材料 挥发性有机化合物 

分 类 号：TB332[一般工业技术—材料科学与工程]