高等学校化学学报 ›› 2026, Vol. 47 ›› Issue (11): 20260162.doi: 10.7503/cjcu20260162

• 高分子化学 • 上一篇    下一篇

自乳化环氧树脂上浆剂的制备及对碳纤维的表面改性

徐金尧1, 戴景富2, 陆书来1,2, 王长宇2, 周诗然1, 马晓坤1()   

  1. 1.吉林化工大学石油化工学院, 吉林 132021
    2.中国石油吉林石化公司研究院, 吉林 132023
  • 收稿日期:2026-04-20 出版日期:2026-11-10 发布日期:2026-09-11
  • 通讯作者: 马晓坤 E-mail:mxk-xshx@163.com
  • 基金资助:
    吉林省重大科技专项科研基金(YDZJ202203CGZH033)

Preparation of Self-emulsifying Epoxy Resin Sizing Agent and Surface Modification of Carbon Fibers

XU Jinyao1, DAI Jingfu2, LU Shulai1,2, WANG Changyu2, ZHOU Shiran1, MA Xiaokun1()   

  1. 1.School of Chemical Engineering,Jilin University of Chemical Technology,Jilin 132021,China
    2.Research Institute of Jilin Petrochemical Company,China National Petroleum Corporation,Jilin 132023,China
  • Received:2026-04-20 Online:2026-11-10 Published:2026-09-11
  • Contact: MA Xiaokun E-mail:mxk-xshx@163.com
  • Supported by:
    the Major Science and Technology Special Research Fund of Jilin Province, China(YDZJ202203CGZH033)

摘要:

以邻苯二甲酸酐接枝聚乙二醇(PA-g-PEG)与环氧树脂(EP)为单体, 采用共聚合方法制备了一种自乳化环氧树脂上浆剂(SEERS). SEERS的一端为亲水羟基基团, 另一端为疏水的环氧基团, 将羟基基团和环氧基团引入碳纤维(CFs)表面, 可增强CFs表面活性, 进而增强CFs与EP基体的化学结合作用. 将PA-g-PEG与EP按照摩尔比1∶1在110 ℃条件下反应4 h, 可得到粒径最小为101.71 nm的SEERS乳液, 该乳液具有良好的稳定性. 通过扫描电子显微镜观察到该上浆剂乳液将CFs均匀包裹, 改善了CFs与EP的结合界面. 将上浆后的CFs热压制备成碳纤维复合材料(CFCs), 在其断面中观察到上浆后CFs与EP的界面相容性较好, 表明CFs与EP具有良好的结合性. 与上浆前相比, 上浆后CFCs的0°拉伸强度、 0°压缩强度、 90°拉伸强度和层间剪切强度分别提升了33.84%, 26.09%, 68.45%和16.00%.

关键词: 自乳化, 上浆剂, 碳纤维复合材料, 力学性能

Abstract:

A self-emulsifying epoxy resin sizing agent(SEERS) was synthesized via the grafting reaction of phthalic anhydride-g-polyethylene glycol(PA-g-PEG) with epoxy resin(EP). The amphiphilic molecular architecture, bearing hydrophilic hydroxyl terminals and hydrophobic epoxy segments, enables surface functionalization of carbon fibers(CFs) and promotes interfacial chemical bonding with the EP matrix. Under optimized conditions[n(PA-g-PEG)/ n(EP)=1∶1, 110 ℃, 4 h], the SEERS emulsion attained a minimum particle size of 101.71 nm and favorable colloidal stability. Scanning electron microscopy revealed a uniform sizing layer on CF surfaces, thereby enhancing fiber-matrix interfacial compatibility. Fracture surface analysis of carbon fiber composites(CFCs) further confirmed strong interfacial adhesion between CFs and EP, manifesting in significant improvements in 0° tensile strength(26.09%), 0° compressive strength(33.84%), 90° tensile strength(68.45%), and interlaminar shear strength(16.00%) compared with unsized counterparts.

Key words: Self-emulsifying, Sizing agent, Carbon fiber composite material, Mechanical property

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