改性甲醛树脂增强粘胶纤维性能的研究  

Study on properties of viscose fiber reinforced by modified formaldehyde resin

作　　者：陈娟[1] CHEN Juan(Tongchuan Vocational and Technical College,Tongchuan 727031,China)

机构地区：[1]铜川职业技术学院,陕西铜川727031

出　　处：《化学工程师》2021年第5期76-79,75,共5页Chemical Engineer

摘　　要：针对普通粘胶纤维强度低,经水溶胀后尺寸稳定性差的问题,分别选取对二氨基苯、对苯二甲醛、戊二醛3种改性剂对三聚氰胺甲醛树脂进行改性。改性后的甲醛树脂再与粘胶溶液共混后凝固纺丝,制备出一种改性粘胶纤维。通过性能测试表明,改性粘胶纤维强度均有所提高,其中经戊二醛改性的粘胶纤维其断裂强度增加最多,达到1.03cN·(dTex)^(-1);通过红外光谱分析,发现经3种改性剂改性后的粘胶纤维在1578、1581、1589cm-1处存在明显吸收峰,说明改性制备成功;通过SEM表面结构和断面结构观察,发现改性后的粘胶纤维表面沟壑模糊,说明改性树脂与粘胶纤维存在良好的相容性;并且对氮含量进行测定,改性后的粘胶纤维氮含量明显高于普通粘胶纤维,经戊二醛改性粘胶纤维氮含量最高,为2.19%。由此说明,该试验方案制备成功,具有可行性。In view of the low strength and poor dimensional stability of ordinary viscose fiber after water swelling,the melamine formaldehyde resin was modified by p-phenylenediamine,p-benzaldehyde and glutaraldehyde.Then,the modified formaldehyde resin was blended with viscose solution to prepare a modified viscose fiber.Through the performance test,the strength of the viscose fiber was improved,and the breaking strength of glutaraldehyde increased the most,reaching 1.03cn·(dtex)^(-1);through the infrared spectrum analysis,it was found that the viscose fiber modified by three modifiers had obvious absorption peaks at 1578,1581 and 1589cm-1,indicating that the preparation was successful.At the same time,the surface structure and cross-section structure were observed by SEM The results showed that the modified viscose fiber had a good compatibility with the viscose fiber;the nitrogen content of the modified viscose fiber was significantly higher than that of the ordinary viscose fiber,and the nitrogen content of the glutaraldehyde modified viscose fiber was the highest(2.19%).Therefore,the above experimental scheme was successfully prepared and feasible.

关 键 词：甲醛树脂 粘胶纤维 对二氨基苯 相容性 戊二醛 

分 类 号：TQ342.94[化学工程—化纤工业]