聚乙二醇改性热塑性环氧树脂及其可纺性  

Polyethylene glycol modified thermoplastic epoxy resin and its spinnability

作　　者：胡宝继 张巧玲 王旭 HU Baoji;ZHANG Qiaoling;WANG Xu(School of Fashion,Henan University of Engineering,Zhengzhou,Henan 451191,China)

机构地区：[1]河南工程学院服装学院,河南郑州451191

出　　处：《纺织学报》2023年第2期63-68,共6页Journal of Textile Research

基　　金：河南省科技攻关计划项目(172102310549)。

摘　　要：为拓宽热塑性环氧树脂在纺织材料领域的应用,以聚合-热压工艺制备了热塑性环氧树脂膜,进一步利用熔融分散工艺将聚乙二醇(PEG)分散至热塑性环氧树脂中制备环氧树脂/PEG粒料,并通过熔融-牵伸工艺制备环氧树脂/PEG长丝。探讨了环氧树脂/PEG的可纺性,分析了环氧树脂膜和环氧树脂/PEG长丝的力学与动态力学性能。结果表明:所制备的环氧树脂膜屈服应力为64.6 MPa,玻璃化转变温度可达100.2℃;PEG的加入使环氧树脂/PEG粒料的挤出力显著降低,当PEG质量分数为5%时,相比于纯环氧树脂挤出力降低了870 N;PEG对热塑性环氧树脂的纺丝温度具有调控作用,当PEG质量分数为7.5%时,相比于纯环氧树脂粒料,环氧树脂/PEG粒料的纺丝温度降低了30℃;经PEG改性后的环氧树脂长丝具有更小的直径和更优异的力学性能,相比于纯环氧树脂长丝,PEG质量分数为7.5%的环氧树脂/PEG长丝直径降低了50μm,PEG质量分数为2.5%的环氧树脂/PEG长丝的断裂应变与断裂应力分别增加了60%和20 MPa。Objective Thermoplastic epoxy resin has excellent mechanical properties and can be melted and reprocessed,but its melting processing temperature is relatively high which needs to be reduced.In order to develop thermoplastic epoxy resin as textile material and to reveal its potential application in the engineering field,on the basis of studying its mechanical and thermodynamic properties,the spinning temperature of thermoplastic epoxy resin needs to be regulated by melting dispersion polyethylene glycol(PEG).Method Thermoplastic epoxy resin film was prepared by polymerizing-hot pressing process.The pellets of thermoplastic epoxy resin/PEG were further developed by the process of PEG melt-dispersion,and the epoxy resin/PEG filament was prepared by the process of melt-drawing.The mechanical and thermodynamic properties of thermoplastic epoxy resin film were analyzed.The influence of PEG on the spinnability of thermoplastic epoxy resin was discussed,and the mechanical and thermodynamic properties of PEG modified epoxy resin/PEG filament were analyzed.Results The yield stress of the thermoplastic epoxy resin film is found to reach 64.6 MPa and the breaking strain 117.4%.The storage modulus of thermoplastic epoxy resin film at 25℃is found as high as 2296 MPa,and the glass transition temperatures 100.2℃.PEG significantly reduces the extrusion force of epoxy resin/PEG pellets.Compared with pure epoxy resin pellets,the extrusion force of epoxy resin/PEG pellets with 5%PEG content is reduced by 870 N at 300℃.The spinning temperature of pure thermoplastic epoxy resin pellets is as high as 300℃,and the extrusion force is about 1.92 kN at this spinning temperature.With the increase of PEG content,the extrusion force of epoxy resin/PEG pellets can reach about 1.9 kN during the spinning of pure epoxy resin pellets at lower temperature.Epoxy resin/PEG pellets with different PEG content can be spun into epoxy resin/PEG filament by melt-drawing process at the mixing temperature of 290℃(PEG content:2.5%),280℃(PEG conten

关 键 词：环氧树脂 聚乙二醇 热塑性 可纺性 熔融分散 熔融-牵伸工艺 环氧树脂长丝 

分 类 号：TQ342[化学工程—化纤工业]