合成纤维

2018, v.47;No.350(04) 37-40

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硅烷偶联剂改性超强聚乙烯纤维的性能表征
Performance Characterization of Silane Coupling Agent Modified Ultra-Strong Polyethylene Fiber

杨燕宁;孟家光;程燕婷;刘晓巧;
YANG Yan-ning;MENG Jia-guang;CHENG Yan-ting;LIU Xiao-qiao;College of Textile Science and Engineering, Xi'an Polytechnic University;

摘要(Abstract):

为充分发挥超强聚乙烯纤维作为复合材料增强体的补强作用,提高纤维与基体之间弱的界面黏结强度,采用硅烷偶联剂KH-550对超强聚乙烯纤维进行了表面改性。全自动单一纤维接触角测量发现改性后超强聚乙烯纤维的接触角减小了30.03%;场发射扫描电镜发现改性后超强聚乙烯纤维的表面由光滑变为粗糙且凹槽深度加深;傅里叶变换红外光谱测试发现改性后的超强聚乙烯纤维出现伯胺基团的弯曲振动和Si-O的特征吸收峰;X射线衍射测试发现改性后超强聚乙烯纤维的衍射峰位置略微发生了变化,且纤维的结晶度增大;热重同步分析发现改性后纤维的残炭率提高了0.56%。
In order to make full use of the reinforcing effect of the ultra-strong polyethylene fiber, improvethe weak interfacial bonding strength between the ultra-strong polyethylene fiber and the composite matrix,the silane coupling agent KH-550 was applied to modify the ultra-strong polyethylene fiber. The full automatic single fiber contact angle measurements show that the contact angle of ultra-strong polyethylene fibermodified by silane coupling KH-550 decreases by 30.03%. Field emission scanning electron microscopy results show that the modified surface of ultra-strong polyethylene fiber changes from smooth to rough andgroove depth. Fourier infrared spectrum test shows that the characteristic absorption peaks of primary aminegroup and Si-O of the modified fiber appeares. X ray diffraction test shows that the diffraction peaks of modified ultra-strong polyethylene fiber change slightly and the crystallinity of the fiber increases. Thermogravimetric analysis shows that the amount of carbon residue after the treatment increases by 0.56%.

关键词(KeyWords): 超强聚乙烯纤维;界面结合强度;硅烷偶联剂KH-550;表面改性
ultra-strong polyethylene fiber;interfacial bonding strength;silane coupling agent KH-550;surface modification

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作者(Author): 杨燕宁;孟家光;程燕婷;刘晓巧;
YANG Yan-ning;MENG Jia-guang;CHENG Yan-ting;LIU Xiao-qiao;College of Textile Science and Engineering, Xi'an Polytechnic University;

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