Al_(2)O_(3)增强环氧树脂基复合材料及其固化行为研究  

Study on Al_(2)O_(3) reinforced epoxy resin matrix composite material and its curing behavior

作　　者：陈勇 谭晓明 陈瑄琦 杜璇 刘盼 张广进 熊航行[1] 朱琼 Chen Yong;Tan Xiaoming;Chen Xuanqi;Du Xuan;Liu Pan;Zhang Guangjin;Xiong Hangxing;Zhu Qiong(College of Chemical Engineering and Pharmacy,Jingchu University of Technology,Jingmen 448000,Hubei,China;Jingmen Chemical Green Technology Research Institute,Jingmen 448000,Hubei,China;Hubei Benxin Environmental Protection Technologies Co.,Ltd.,Wuhan 430074,Hubei,China)

机构地区：[1]荆楚理工学院化工与药学院,湖北荆门448000 [2]荆门化工绿色技术研究院,湖北荆门448000 [3]湖北本心环保科技股份有限公司,湖北武汉430074

出　　处：《中国胶粘剂》2022年第2期30-35,41,共7页China Adhesives

基　　金：湖北省教育厅科学研究计划指导性项目(B2020198);荆楚理工学院科研项目(ZD202106);荆楚理工学院教学研究项目(JX2018-024);荆楚理工学院大学生创新创业训练项目(KC2021029)湖北省大学生创新创业训练项目(202011336022和202011336023)。

摘　　要：采用氧化铝(Al_(2)O_(3))对环氧树脂/聚酰胺复合材料进行增强改性,研究其力学性能、吸水吸油性能和热学性能等。研究结果表明:当w(Al_(2)O_(3))=10%时,材料的拉伸强度为28.25 MPa,比未添加时提高了8.72%;当w(Al_(2)O_(3))=1%时,材料的剥离强度为381.19 MPa,比未添加时提高了196.31%。为提高树脂的力学性能,不影响复合材料的成型工艺,最终选择w(Al_(2)O_(3))=1%。此时,材料的吸水率、吸油率分别为0.61%和1.24%,比未添加时降低了69.19%和39.51%,耐水和耐油性能增强;材料的热分解温度为343℃,比未添加时提高了9℃;改性前后材料的表观活化能分别为48.44和48.99 kJ/mol,指前因子分别为2.21×10^(4)和2.23×10^(4)s^(-1),反应级数分别为0.75和0.88。这说明添加Al_(2)O_(3)对复合材料的固化行为影响较小,确定了该反应的固化工艺为58℃/0.5 h+98℃/1 h+138℃/0.5 h。Epoxy resin/polyamide composite material was reinforced and modified with alumina(Al_(2)O_(3)),and its mechanical properties,water and oil absorption properties and thermal properties were studied.The research results showed that when w(Al_(2)O_(3))=10%,the tensile strength of material was 28.25 MPa,which was 8.72%higher than that without addition.When w(Al_(2)O_(3))=1%,the peel strength of material was 381.19 MPa,which was 196.31%higher than that without addition.In order to improve the mechanical properties of resin and not affect the molding process of composite material,w(Al_(2)O_(3))=1%was finally selected.At this time,the water absorption and oil absorption of material were 0.61%and 1.24%,respectively,which was 69.19%and 39.51%lower than that without addition,and water and oil resistance were also enhanced.The thermal decomposition temperature of material was343℃,which was 9℃higher than that without addition.Before and after modification,the apparent activation energies of materials were 48.44 and 48.99 kJ/mol,the pre-exponential factors were 2.21×10^(4)and 2.23×10^(4)s^(-1),and the reaction orders were 0.75 and 0.88,respectively.This indicated that the addition of Al_(2)O_(3)had little effect on the curing behavior of composite materials.The curing process of reaction was determined as 58℃/0.5 h+98℃/1 h+138℃/0.5 h.

关 键 词：非等温差示扫描量热法 环氧树脂 Al_(2)O_(3) 复合材料 固化动力学 

分 类 号：TQ323.5[化学工程—合成树脂塑料工业]