用聚乙二醇（PEG）在催化剂过硫酸钾作用下与环氧树脂反应，制得自乳化环氧树脂乳液。通过红外光谱表征改性环氧的结构，并比较不同实验方案下乳液的稳定性，探讨了反应原料、合成工艺等因素对实验结果的影响，确定了最佳实验方案；用热分析实验表征上浆剂的热稳定性，接触角测试表征上浆剂乳液的浸润性，单丝碎裂实验测定界面剪切强度。结果表明，使用双酚A环氧树脂及PEG1000在80～120℃反应制得的乳液稳定性最好，上浆剂的热稳定性和浸润性良好。用实验制得的乳液对碳纤维上浆，单丝界面剪切强度比上浆前提高33．48％，碳纤维毛丝量减少。
The epoxy was modified by polyethylene glycol （PEG） to synthesize self-emulsifying epoxy emulsion, which was characterized by FTIR to confirm its structure. The stability of the epoxy emulsion stemmed in different experimental circumstances was investigated to analyze the effects of the reactants, process and other factors on the final products, and to reveal the optimal process parameters. The thermal properties of the sizing agents were characterized by TG and DSC, the wetting property of the sizing agents were characterized through contact angle test, and the IFSS （interfacial shear strength） of a single fiber was characterized by a single fiber fragmentation test. The results show that the emulsion prepared by reaction of the epoxy and PEG- 1000 at 80-120 ℃ has the best stability. The sizing agents has good thermal stability and wetting property. The fuzz amount of carbon fiber decreases and the IFSS （interracial shear strength） increases by 33. 48% after sizing with the epoxy emulsion.
参考文献
| [1] | 立 早. 炭纤维增强复合材料[J]. 新型炭材料, 1999, 14(4): 78-79. |
| [2] | 杨 禹, 吕春祥, 王心葵, 等. 纳米SiO2改性碳纤维乳液上浆剂的性能评价 [J]. 复合材料学报, 2007, 24(2): 38-43. |
| [3] | Reis M J, Botelho Do Rego A M, Lopes Da Silva J D, et al. An XPS study of the fiber-matrix interface using sized carbon fibers as a model [J]. Journal of Materials Science, 1995, 30: 118-126. |
| [4] | Nursel D, Wightman J P. Surface analysis of unsized and sized carbon fibers [J]. Carbon, 1999, 37: 1105-1114. |
| [5] | 曹 霞, 温月芳, 张寿春, 等. 耐温型碳纤维乳液上浆剂 [J]. 新型炭材料, 2006, 21(4): 337-338. |
| [6] | Nakaoka Y, Makino O. Method of sizing carbon fibres: US Patent: US 005688554A . 1997-11-18. |
| [7] | Tang L G, Jonh L K. A review of methods for improving the interfacial adhesion between carbon fibre and polymer matrix [J]. Polymer Composites, 1997, 18(1): 100-113. |
| [8] | 王 进, 杜宗良, 李瑞霞, 等. 环氧树脂的水基分散体系的相反转乳化 [J]. 功能高分子学报, 2000, 13(2): 141-144. |
| [9] | 刘晓冬, 陈志明, 董 劲, 等. 单组份水性环氧乳液的合成研究 [J]. 应用化工, 2007, 36(1): 68-69. |
| [10] | 关蓉波, 杨永岗, 郑经堂, 等. 碳纤维乳液上浆剂 [J]. 新型炭材料, 2002, 17(3): 49-55. |
| [11] | Zhang Z Y. Huang Y H, Liao B, et al. Preparation of waterborne dispersions of epoxy resin by the phase-inversion emulsification technique: 1-Experimental study on the phase-inversion process [J]. European Polymer Journal, 2001, 37: 1207-1211. |
| [12] | 肇 研, 段跃新, 肖 何. 上浆剂对碳纤维表面性能的影响 [J]. 材料工程, 2007(S1): 121-123. |
| [13] | 吴志高, 李世荣, 卢军彩. 环氧值测定方法的改进 [J]. 武汉化工学院学报, 2006, 28(1): 5-7. |
| [14] | Nishimura I. Sized carbon fiber strand, and prepreg containing the carbon fiber as reinforcing fiber and its molded product: JP Patent, JP10266076 . 1998-10-06. |
| [15] | 夏新年, 刘玉堂, 熊远钦, 等. 水性环氧乳液的研制 [J]. 涂料工业, 2004, 34(2): 5-8. |
| [16] | 朱淮武. 有机分子结构波谱解析 [M]. 北京: 化学工业出版社, 2005, 45-55. |
| [17] | 贺 福, 王茂章. 碳纤维及其复合材料 [M]. 北京: 科学出版社, 1995: 175-226. |
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