碳纤维增强不饱和聚酯自修复复合材料的制备及性能

发布时间：2018-04-12 19:13

本文选题：碳纤维 + 自修复　；参考：《现代化工》2017年06期

【摘要】：采用原位聚合法制备了以三聚氰胺-脲甲醛为壁材,环氧E-51为芯材的微胶囊(MUF),并将其应用到碳纤维(CF)增强不饱和聚酯(UP)复合材料中,详细探讨了CF质量分数和MUF质量分数对碳纤维/不饱和聚酯(CF/UP)复合材料和微胶囊/碳纤维/不饱和聚酯(MUF/CF/UP)复合材料热稳定性、力学性能和自修复性能的影响。通过OM和SEM观察MUF的表面形貌,FTIR对MUF、CF/UP复合材料和MUF/CF/UP复合材料的化学结构进行表征,TGA、悬臂梁冲击仪和万能拉力试验机对复合材料的热稳定性、冲击性能、拉伸性能和自修复性能进行测试。结果表明,CF和MUF质量分数均为1%时,MUF/CF/UP复合材料的热稳定性较佳,力学性能及自修复性能较优;其拉伸强度为3.99 MPa,弹性模量为229.58 MPa,断裂伸长率为2.12%,冲击强度为86.75 k J/m~2,自修复效率为62.02%。
[Abstract]:In situ polymerization method was used to prepare microencapsulated MUFF with melamine-urea formaldehyde as wall material and epoxy E-51 as core material, and it was applied to carbon fiber reinforced unsaturated polyester (UPU) composites.The effects of CF mass fraction and MUF mass fraction on the thermal stability, mechanical properties and self-repair properties of carbon fiber / unsaturated polyester / CF / UPU composites and microcapsule / carbon fiber / unsaturated polyester / MUFR / CF / UPU composites were discussed in detail.The surface morphology of MUF was observed by means of OM and SEM. The chemical structures of MUFG / up and MUF/CF/UP composites were characterized by FTIR. The thermal stability and impact properties of the composites were investigated by cantilever impact tester and universal tensile force tester.Tensile and self-repairing properties were tested.The results show that the thermal stability, mechanical properties and self-repair properties of CF / CF / UP composites are better when the mass fraction of CF and MUF is 1%.The tensile strength is 3.99 MPA, the elastic modulus is 229.58 MPA, the elongation at break is 2.12, the impact strength is 86.75 K / m ~ (2), and the self-repairing efficiency is 62.02%.
【作者单位】：陕西科技大学化学与化工学院;
【基金】：陕西省教育厅专项科研计划项目(16JK1110) 2016年陕西科技大学大学生创新创业训练计划(004)
【分类号】：TB332

【相似文献】