纳米增强竹浆纤维/环氧树脂复合材料的热解动力学  

Pyrolysis Kinetics of Bamboo Pulp Fiber Reinforced Epoxy Resin Composites Treated by Nano Particles

作　　者：王翠翠[1,2] 王朔 张双保 王戈[2] 陈政豪 程海涛 WANG Cuicui;WANG Shuo;ZHANG Shuangbao;WANG Ge;CHEN Zhenghao;CHENG Haitao(MOE Key Laboratory of Wooden Material Science and Application,Beijing Forestry University,Beijing 100083,China;International Centre for Bamboo and Rattan,Beijing 100102,China;School of Soil and Water Conservation, Beijing Forestry University,Beijing 100083,China)

机构地区：[1]北京林业大学木材科学与工程北京市重点实验室,北京100083 [2]国际竹藤中心,北京100102 [3]北京林业大学水土保持学院,北京100083

出　　处：《建筑材料学报》2018年第2期314-319,334,共7页Journal of Building Materials

基　　金：国家重点研发计划项目(2017YFD0600802);北京市教育委员会共建项目专项资助;国家自然科学基金资助项目(31670571);北京市自然科学基金资助项目(6162019);浙江省共建项目(CZXC201410)

摘　　要：采用纳米碳酸钙(CaCO_3)浸渍改性工艺对竹浆纤维(BPF)进行改性,并采用真空辅助树脂浸注(VARI)技术制备纳米浸渍改性竹浆纤维(IMBPF)/环氧树脂复合材料.利用热失重分析(TGA)方法研究了原材料和复合材料在氮气气氛下的热降解行为,采用Flynn-Wall-Ozawa(FWO)和Vyazovkin and Weight(VW)方法量化了复合材料的表观活化能.结果表明:IMBPF/环氧树脂复合材料出现300~400,400~450,600~700℃3个失重区,分别对应BPF、环氧树脂和纳米CaCO_3的热降解;采用FWO法和VW法测定的IMBPF/环氧树脂复合材料的表观活化能均高于对照样(未改性的BRF),且FWO法估算数值高于VW法;纳米CaCO_3对复合材料的热降解特性具有调控作用;FWO法和VW法处理的结果总体相差不大,但前者优于后者.Bamboo pulp fiber(BPF)was treated by nano CaCO3 impregnation modification(IM),and IMBPF/epoxy resin composites was prepared by means of vacumm-assisted resin infusion(VARI)technology.Thermal degradation behavior of raw materials and composites was studied by thermo-gravimetric method(TGA)under nitrogen atmosphere.Also,the apparent activation energy of the composite was quantified by Flynn-Wall-Ozawa(FWO)and Vyazovkin and Weight(VW)model.It turned out that IMBPF/epoxy resin composites have three weight loss stages at the temperature ranges:300 400,400 450 and 600 700℃,due to thermal decomposition of BPF,epoxy resin and nano CaCO3,respectively.The average activation energy of IMBPF/epoxy resin composites determined by two methods was higher than that of the control sample,and the value estimated by FWO method was higher than that by VW method.Nano CaCO3 has a regulatory effect on thermal degradation characteristics of composite.Meanwhile,there is only little difference between two methods which could provide theoretical support for the efficient utilization of plant fiber reinforced polymer composites.

关 键 词：真空辅助树脂浸注 纳米碳酸钙 浸渍改性 竹浆纤维/环氧树脂复合材料 热解动力学 

分 类 号：TB332[一般工业技术—材料科学与工程]