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聚乙二醇改性环氧乳液碳纤维上浆剂的研制

DOI: CNKI:11-1801/TB.20110720.1337.008, PP. 80-85

Keywords: 上浆剂,环氧树脂乳液,聚乙二醇,碳纤维

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Abstract:

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。

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