聚四氟乙烯纤维中杂质分离技术研究  

Study on Removal Techniques for Impurities in Polytetrafluoroethylene Fiber

作　　者：任忠海[1] 李天宝[2] 钟月香 李丽华[2] 

机构地区：[1]广东检验检疫技术中心,广东广州510623 [2]江门出入境检验检疫局,广东江门529000

出　　处：《有机氟工业》2014年第2期12-14,共3页Organo-Fluorine Industry

基　　金：广东省科技计划项目(2011B010400019)

摘　　要：以HNO3+H2O2为消解液对载体纺丝法制得的聚四氟乙烯纤维进行微波消解,结果样品回收率约为97.91%,说明烧结残留的载体杂质含量约为2.09%,样品由棕色变为通体白色半透明,结合电镜图片证明杂质基本去除完全。处理后的纤维强度无明显变化,平均伸长率则明显提高。Taking HNO3 ＋ H2O2 as the digestion solution, polytetrafluoroethylene fiber that were prepared by carrier spinning method are digested by microwave. The sample recovery rate is 97.91% ; the carrier of sintering residual impurity content is about 2.09%. The samples＇ color change from brown to translucent white; and SEM pictures prove that the impurities had removed completely. For fiber strength , there was no significant difference between before and after microwave digestion, but the average elongation is improved obviously after treatment.

关 键 词：聚四氟乙烯纤维 微波消解 杂质去除 载体纺丝法 乳液纺丝法 

分 类 号：TQ342.711[化学工程—化纤工业]