收藏我们   ENGLISH  
客服QQ
  点击这里给我发消息505255386
微信
  微信公共号
关键词查询
范围:  
提 交
《工程塑料应用》 2020年第06期
DOI:10.3969/j.issn.1001-3539.2020.06.002
氧化石墨烯包覆羟基氧化铁协同增强环氧树脂的断裂韧性
陈官1,马传国12,王静1,付泽浩1,戴培邦12
1.桂林电子科技大学材料科学与工程学院,广西桂林 541004; 2.广西信息材料重点实验室,广西桂林 541004 
Synergistic Strengthening of Fracture Toughness of Epoxy Resin With Graphene Oxide Coated With Hydroxyl Iron Oxide
Chen Guan1, Ma Chuanguo12, Wang Jing1, Fu Zehao1, Dai Peibang12
1. School of Material Science and Engineering, Guilin University of Electronic Technology, Guilin 541004, China; 2. Guangxi Key Laboratory of Information Materials, Guilin 541004, China 
摘要:采用静电自组装法制备了氧化石墨烯包覆针状羟基氧化铁的复合纳米粒子(GO@FeOOH),借助磁场使其在环氧树脂(EP)中发生取向,进而显著增强EP的断裂韧性。分别用X射线衍射、扫描电子显微镜、透射电镜及振动磁强计等对纳米粒子进行了表征,通过三点弯曲试验评估了EP/GO@FeOOH复合材料的临界应力强度因子(KIC),采用SEM分析了GO@FeOOH的增韧机理。实验结果表明:通过静电自组装,GO成功包覆在FeOOH表面,而非FeOOH负载在GO上。GO@FeOOH直径和长度分别为100 nm、1 μm左右,饱和磁化强度7.18 emu/g,在0.09 T的磁场下能够被取向。在磁场诱导下,EP/GO@FeOOH(0.5%含量)的KIC提高最显著,达到了3.2 MPa·m1/2,分别比EP和无磁场诱导的EP/GO@FeOOH提高了140%和70.6%,同时GO和FeOOH表现出明显的协同效应。该复合材料的增韧机理主要包括粒子的拔出、脱粘以及裂纹偏转和基体的局部塑性形变等形式。 
Abstract:Graphene oxide coated needle-like hydroxy iron oxide composite nanoparticles (GO@FeOOH) were prepared by electrostatic self-assembly method, which were oriented in epoxy resin (EP) with the help of magnetic field, thus achieving remarkable toughening of EP. The nanoparticles were characterized by x-ray diffraction (XRD), scanning electron micrograph (SEM), transmission electron micrograph (TEM) and vibration magnetometer. The critical stress intensity factor (KIC) of GO@FeOOH/EP composite was evaluated by three-point bending test, and the toughening mechanism of GO@FeOOH was identified by SEM. The results show that GO is successfully coated on FeOOH surface by electrostatic self-assembly to obtain GO@FeOOH rather than FeOOH loaded on GO. The diameter and length of GO@FeOOH are about 100 nm and 1 μm, respectively, and the saturation magnetization is 7.18 emu/g. The orientation of the nanoparticle can take place under the magnetic field of 0.09 T. Under the magnetic field, the KIC of EP/0.5% GO@FeOOH is increased the most significantly up to 3.2 MPa·m1/2, which is 140% and 70.6% higher than that of EP and GO@FeOOH/EP without magnetic field induction, respectively. Meanwhile, GO and FeOOH show significant synergistic effect on the toughening of EP. The toughening mechanism of the composite mainly includes the pull-out and debonding of the nanoparticle, crack deflection and local plastic deformation of the matrix. 
关键词:环氧树脂;断裂韧性;氧化石墨烯;羟基氧化铁;纳米粒子 
Keywords:epoxy resin; fracture toughness; graphene oxide; hydroxyl iron oxide; nanoparticle 
基金:国家自然科学基金项目(51763006),广西自然科学基金项目(2016JJA160040) 
本文引用格式:
陈官,马传国,王静,等.氧化石墨烯包覆羟基氧化铁协同增强环氧树脂的断裂韧性研究[J].工程塑料应用,2020,48(6):8-13.
Chen Guan,Ma Chuanguo,Wang Jing,et al. Synergistic strengthening of the fracture toughness of epoxy resin with graphene oxide coated with hydroxyl iron oxide[J]. Engineering Plastics Application,2020,48(6):8-13. 

原文:
 
相似文章:
  碳纳米管改性环氧树脂/碳纤维复合材料的界面性能
2020年第05期
  导热环氧树脂复合材料研究进展
2020年第04期
  短纤维层间增强碳纤维复合材料层板的力学研究
2020年第01期
  环氧改性硅酚醛树脂的制备与性能
2019年第11期
  电子封装用环氧树脂基复合材料研究进展
2019年第10期
  发泡工艺对环氧微孔发泡材料压缩性能的影响
2019年第10期
  氧化铝纳米化修饰对环氧复合材料性能的影响
2019年第10期
  溶剂热法原位制备抗菌EP/纳米TiO2复合材料
2019年第10期
  环氧树脂基体中圆柱夹杂引起的界面残余应力研究
2019年第08期
  具有紫外线吸收功能的PVDF/GO复合膜的制备及表征
2019年第07期
《工程塑料应用》杂志社 版权所有,未经授权禁止复制或者建立镜像
地址:山东省济南市天桥区田庄东路3号 邮编:250031
电话:0531-85878057 85878223 85878278 传真:0531-85947355
鲁ICP备05018524号-5