摘要
经熔融共混法将纳米Al_2O_3掺杂到热塑性酚醛树脂中,熔融纺丝,制备酚醛纤维原丝,再经固化处理,得交联化的酚醛纤维;碳化,得酚醛基碳纤维。考察了掺杂纳米Al_2O_3对酚醛纤维固化反应、交联化酚醛纤维性质及酚醛基碳纤维性质的影响。结果表明,引入纳米Al_2O_3可提高固化速率,随纳米Al_2O_3掺量的不同,纤维的残碳及拉伸强度都有不同程度的改善;在纳米Al_2O_3掺量1. 5%时,纤维的残碳率提高13. 6%,纤维的拉伸强度提高了6. 91%;改性酚醛基碳纤维的比表面积高达630 m2/g,与未改性的酚醛基碳纤维相比,比表面积提高了53. 7%。
The nano-Al2O3 was doped into thermoplastic phenolic resin by melt blending method,the phenolic raw fiber was prepared by melt spinning,and the crosslinked phenolic fiber was cured by curing and carbonized phenolic based carbon fiber. The effects of doped nano-Al2O3 on curing reaction,crosslinking phenolic fiber properties and phenolic based carbon fiber properties of phenolic fibers were investigated.The results show that the introduction of nano-Al2O3 can improve the curing rate. With the different content of nano-Al2O3,the residual carbon and tensile strength of the fibers are improved in varying degrees.When the nano-Al2O3 content is 1. 5%,the residual carbon ratio of the fiber is increased by 13. 6%,the tensile strength of the fiber is increased by 6. 91%,and the specific surface area of the modified phenolic based carbon fiber is 630 m2/g,the specific surface area is increased by 53. 7% compared to the unmodified phenolic carbon fiber.
作者
云庆跃
卢建军
连丹丹
韩汶欣
沈国兵
YUN Qing-yue;LU Jian-jun;LIAN Dan-dan;HAN Wen-xin;SHEN Guo-bing(Key Laboratory of Coal Science and Technology,Taiyuan University of Technology,Taiyuan 030024,China)
出处
《应用化工》
CAS
CSCD
北大核心
2018年第12期2666-2669,共4页
Applied Chemical Industry
基金
山西省煤基重点科技攻关项目(152140041-S)
关键词
改性酚醛纤维
残碳
拉伸强度
酚醛基碳纤维
比表面积
modified phenolic fiber
residual carbon
tensile strength
phenolic carbon fiber
specific surface area
