中空酚醛纤维的熔纺研究及性能表征  

Melt-spinning and Characterization of HSollow Phenolic Fibers

作　　者：张东卿[1,2] 雷世文[1] 史景利[1] 郭全贵[1] 宋燕[1] 刘朗[1] 

机构地区：[1]中国科学院山西煤炭化学研究所,炭材料重点实验室,太原030001 [2]中国科学院研究生院

出　　处：《材料工程》2007年第z1期172-178,共7页Journal of Materials Engineering

基　　金：国家863项目(2006AA11A166);国家自然科学基金(50602046)

摘　　要：以提纯后的热塑性酚醛树脂为原料,用圆弧狭缝式喷丝板进行熔融纺丝,经过固化液固化和热处理一系列工艺,制备出了中空酚醛纤维。结果表明:树脂提纯后可纺性能大大提高,只有在适当的熔纺条件下圆弧狭缝式喷丝板才能纺出中空结构的酚醛纤维,改变的熔纺参数,还可以纺出C形和实心圆形另外两种截面的酚醛纤维。SEM,IR,TG-DSC和强度测试等分析结果表明,所制备的中空酚醛纤维和普通实心酚醛纤维一样,具有较高的固化交联度、分解温度和残炭率,同时具有更好的力学性能。Hollow phenolic fibers were successfully prepared by curing the hollow spun filaments derived from the melt-spinning the purified thermoplastic phenolic resin.Triple-arc-shaped spinneret was used in melt-spinning,and the hollow structure was formed in this process.C-shaped and round solid fibers could also be obtained when the parameters were changed.All these fibers were characterized by the SEM,IR,TG-DSC and tensile strength.The results show that the hollow phenolic fibers behave higher mechanics properties and slight lower degradation temperature and char-yield than the solid round ones because of the same curing extent.

关 键 词：中空酚醛纤维 圆弧狭缝式喷丝板 固化交联度 

分 类 号：TB3[一般工业技术—材料科学与工程]