多孔环氧树脂基固体电解质微观结构与性能
Microstructure and Properties of Porous Epoxy Resin Based Solid Electrolyte
孙小巍 1刘帅 1叶金蕊 2雷琴 2姬晓龙2
作者信息
- 1. 沈阳建筑大学材料科学与工程学院,辽宁沈阳 110168
- 2. 北京理工大学宇航学院,北京 100081;北京理工大学唐山研究院,河北唐山 063000
- 折叠
摘要
文中以聚乙二醇200为制孔剂、双酚A二缩水甘油醚为树脂基体、4,4'-二氨基二环己基甲烷(PACM)和聚醚胺(D230)为固化剂,使用反应诱导相分离法制备了多种多孔环氧树脂,研究了制孔剂比例与固化剂种类对多孔环氧树脂微孔结构的影响.结果表明,随着制孔剂比例增加,PACM体系多孔环氧树脂微孔结构由非贯通圆孔变为由环氧树脂小球连接的贯通结构,而D230体系多孔环氧树脂由独立小孔逐渐发展为三维骨架孔道.D230三维贯通骨架结构更利于制孔剂的去除和离子通道的形成,可在保留较完整树脂骨架的同时获得较高离子电导率(1.81 mS/cm);而PACM海绵状微孔更容易形成闭合孔道,在制孔剂与树脂质量比超过3∶1的情况下可获得较高离子电导率(2.02 mS/cm),但此时微观形貌表现为独立树脂小球,失去力学性能.此外,在制备的树脂固体电解质块体结构中,D230体系在更低的制孔剂比例下(制孔剂与树脂质量比为2∶1)测得离子电导率(0.35 mS/cm),表明大厚度条件下,D230体系三维网络结构对比PACM体系圆孔更有利于形成连续离子通道.
Abstract
A variety of porous epoxy resins were prepared by reaction-induced phase separation method with polyethylene glycol 200 as pore making agent,bisphenol A diglycidyl ether as resin matrix,4,4'-diaminodicyclohexylmethane(PACM)and poly ether amine(D230)as curing agent.The effects of pore making agent ratio and curing agent on the micropore structure of porous epoxy resins were studied.The results show that with the increase of the proportion of pore-making agent,the porous epoxy resin structure of PACM system changes from non-through round holes to through structures connected with epoxy resin pellets,while the porous epoxy resin of D230 system gradually develops from independent pores to three-dimensional skeleton pores.The D230 three-dimensional through skeleton structure is more conducive to the removal of pore-making agents and the formation of ion channels,and obtains higher ionic conductivity(1.81 mS/cm)while retaining more complete resin skeleton.PACM spongy micropores are more likely to form closed pores,and higher ionic conductivity(2.02 mS/cm)can be obtained when the mass ratio of pore-making agent and resin is over 3∶1,but at this time,the microscopic morphology is independent resin pellets,and the mechanical properties are lost.In addition,in the prepared resin solid electrolyte block structure,the ionic conductivity of D230 system was measured(0.35 mS/cm)at a lower pore-making agent ratio(mass ratio pore-making agent and resin of 2∶1),indicating that the three-dimensional network structure of D230 system is more conducive to the formation of continuous ion channels than that of PACM system under large thickness conditions.
关键词
制孔剂/固化剂/多孔环氧树脂/微观形貌Key words
pore-making agent/curing agent/porous epoxy resin/micromorphology引用本文复制引用
基金项目
国家自然科学基金资助项目(12172024)
出版年
2024
NETL
NSTL
万方数据