一种自乳化水性环氧树脂上浆剂的制备与性能研究材料工程专业论文.docxVIP

北京化工大学硕士学位论文此法制备的上浆剂乳液粒径小，且均匀稳定无沉降，粘度值与相同固 北京化工大学硕士学位论文 此法制备的上浆剂乳液粒径小，且均匀稳定无沉降，粘度值与相同固 含量日本AK-8上浆剂近似。 将自乳化水性环氧树脂上浆剂与日本AK-8上浆剂分别稀释至体 积占比为3％的水性体系，对比两种上浆剂的粘度、pH值；并对未上 浆国产T800碳纤维进行上浆，分析比较不同上浆剂对碳纤维上浆后 的上浆率、耐水性、上浆后碳纤维表观形貌、层间剪切强度(ⅢLs) 等界面性能。结果表明，与使用日本AK-8上浆剂上浆碳纤维相比， 使用自乳化水性环氧树脂上浆剂上浆的碳纤维性能略低，但其上浆率 稳定，粘度适中，上浆剂在碳纤维单丝表面可以形成光滑且完整的浆 膜，能有效保护碳纤维起毛，有效发挥其过渡层作用，不仅提高树脂 基体与碳纤维间层剪强度，而且对于碳纤维在复合材料、编织纤维布 等领域的应用起到良好促进作用。 关键词：上浆剂，水性环氧树脂，碳纤维，蓖麻油聚氧乙烯醚，乳液 lI 万方数据 AbstractFABRICA：ⅡoN Abstract FABRICA：ⅡoN AND PRoPER-ⅧS oF A SELF—EM[ULSIFmD SIZING AGENT BASED oN Ⅵ么蜘[ERB oRNE EPoXY RESIN AB S’IRACT With the development of rap id industrialization,carbon fiber has become an essential strategic material in national defense industry and national economy,due to excellent high temperature res istance，hi曲 specific strength and modulus．Carbon胁瓯as one of the most important technology-intensive products，has been widely used in the field of astronautics，aeronautics，automobile，mechanical industry,electronics， chemical industry．However,the further application of carbon fiber is limited by its brittleness and lower elongation rate，which may cause broken filaments and fracture of monofilament，hindering the infiltration of resin matrix into carbon fiber bundles during the manufacture of fiber reinforced composites．In order to solve the above problems and improve the interfacial properties of composites，sizing agent with the thickness ranged from tens to hundreds nanometers is usually applied to the surface of carbon fibers．In this paper,a self-emulsifying sizing agent based on water-borne epoxy resin Was prepared and its properties were carefully smdied． III 万方数据 北京化工大学硕士学位论文We 北京化工大学硕士学位论文 We introduce epoxy groups into castor oil polyoxyethylene ether (EL-80)with strong hydmphilic property to prepare castor oil polyoxyethylene g驰idyl ether(COPEGE)us抽g chemical modification method．The effects of catalyst dosage，reaction temperature，reaction time and reactant ratio on the epoxy value were studied．Then COPEGE