高邻位硼酚醛纤维的合成及表征  

Preparation and Characterization of High-Ortho Boron-Containing Phenolic Fibers

作　　者：焦明立[1] 杨凯 曹健[1] 刘红燕[1] 张旺玺[1] 余木火[3] 

机构地区：[1]中原工学院材料与化工学院河南省功能性纺织材料重点实验室,河南郑州450007 [2]中原工学院服装学院,河南郑州450007 [3]东华大学材料学院东华大学纤维材料改性国家重点实验室,上海201620

出　　处：《高分子材料科学与工程》2016年第3期22-26,共5页Polymer Materials Science & Engineering

基　　金：国家自然科学基金资助项目(U1404507);国家留学基金项目(201308410358;201508410397)

摘　　要：以苯酚、甲醛及硼酸为原料,醋酸锌、硫酸双催化聚合得到高邻位硼酚醛树脂,经熔融纺丝制得初生纤维,然后在甲醛、盐酸水溶液中缓慢升温溶液固化,在N2气氛中240℃热固化,获得高邻位硼酚醛纤维。利用傅里叶变换红外光谱研究了硼酚醛纤维固化过程中的结构变化,热重分析表明硼酸的加入增加了酚醛纤维的残炭率,扫描电镜图显示热固化后,纤维结构均一化,韧性增加。通过与硼酸共聚及纤维热固化提高了纤维的热性能,解决了高邻位酚醛纤维固化不均匀,力学性能差的问题。The high-ortho boron-containing phenolic fibers （HBPFs） were prepared by the crosslinking of heat- meltable spun filaments derived from melt-spinning of the novolac resins copolymerized among phenol, formaldehyde and boric acid in the presence of zinc acetate and sulfuric acid cal;alyst, and cured in a combined mlution of formaldehyde and hydrochloric acid. The resulting fibers were thermocured in N2 at tiered temperature. IR, TGA, SEM and electrical tensile strength apparatus were employed to characterize the change of functional groups, thermal performance, distribution of crosslinkage in the interior and surface, mechanical properties, and microstructure of fibers. The results show that the addition of boron in the precursor resin can increase the content of phenol borate B- O linkage, and thermal stability and mechanical strength of HBPFs.

关 键 词：高邻位 硼酸 酚醛纤维 交联结构 热固化 

分 类 号：TQ342.791[化学工程—化纤工业]