纺织高校基础科学学报2024，Vol.37Issue(3)：53-59,7.DOI:10.13338/j.issn.1006-8341.2024.03.006
埃洛石纳米管改性酚醛复合泡沫的性能研究
Properties of HNTs modified phenolic composite foams
摘要
Abstract
Properties of carbon foam composites were restricted by their precursor.In order to optimize the precursor of carbon foam composites,halloysite nanotubes(HNTs)modified phe-nolic composite foams were synthesized by compression molding and high-temperature curing treatment,with phenolic microspheres as dispersed phase,phenolic resin as matrix and HNTs as reinforcement.The microstructure,mechanical properties and thermal stability of the phenolic composite foams were characterized by scanning electron microscope(SEM),universal testing machine and thermogravimetric analyzer.The results show that the mechanical strength and frac-ture toughness improved significantly with the introduction of HNTs,due to the fact that phenolic microspheres'phase and HNTs phase effectively hinder crack propagation and consume crack propagation energy.The compressive strength and specific compressive strength achieved the maximum for the phenolic composite foam with 4％HNTs,15.4 MPa and 38.7 MPa·cm3·g-1,respectively,which were 65.6％and 59.3％higher than those of the pure phenolic composite foam.The modified phenolic composite foams showed good thermal stability.Their initial decom-position temperatures were all above 350 ℃.Because of the slow release of HNTs on the decom-position of the resin matrix and heat transfer,their carbon residue rates were more than 60.8％at 800 ℃,and even reached up to 68.3％.The current research of HNTs modified phenolic com-posite foams was helpful to improving comprehensive properties of carbon foams,which contrib-ute a lot to the application of carbon foams in the aerospace field.关键词
酚醛泡沫/埃洛石纳米管/前驱体/力学性能/热行为Key words
phenolic foam/halloysite nanotubes/precursor/mechanical properties/thermal be-havior分类
通用工业技术引用本文复制引用
王斌,薛功飞,俞慧,李颜靓,裴彤欣..埃洛石纳米管改性酚醛复合泡沫的性能研究[J].纺织高校基础科学学报,2024,37(3):53-59,7.基金项目
陕西省教育厅重点科学研究计划协同创新中心项目(20JY027) （20JY027）
陕西省科技厅重点研发计划项目(2024NC-YBXM-247) （2024NC-YBXM-247）
陕西省大学生创新创业训练计划项目(S202310709113) （S202310709113）
