纳米Al_2O_3改性酚醛基碳纤维的制备及性能研究
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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-Al_2O_3 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-Al_2O_3 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-Al_2O_3 can improve the curing rate. With the different content of nano-Al_2O_3,the residual carbon and tensile strength of the fibers are improved in varying degrees.When the nano-Al_2O_3 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.
The nano-Al_2O_3 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-Al_2O_3 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-Al_2O_3 can improve the curing rate. With the different content of nano-Al_2O_3,the residual carbon and tensile strength of the fibers are improved in varying degrees.When the nano-Al_2O_3 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.
引文
[1]周宏.美国高性能碳纤维技术发展史研究[J].合成纤维,2017,46(2):16-21.
[2]张东卿,史景利,郭全贵,等.炭化过程中中空酚醛纤维结构性能的变化[J].材料工程,2011(9):72-76.
[3]任东雪,焦明立,郑瑾,等.酚醛基活性炭纤维的研究进展[J].合成纤维工业,2017,40(5):62-67.
[4] Xie G,Chen Z,Ramakrishna S,et al. Orthogonal design preparation of phenolic fiber by melt electrospinning[J].Journal of Applied Polymer Science,2015,132(38):1-8.
[5]王迎,谢概,刘勇.静电纺丝法制备酚醛纤维研究进展[J].高分子通报,2016(3):1-5.
[6] Imaizumi S,Matsumoto H,Suzuki K,et al. Phenolic resinbased carbon thin fibers prepared by electrospinning:Additive effects of poly(vinyl butyral)and electrolytes[J]. Polymer Journal,2009,41(12):1124-1128.
[7]陈坤,李俊,唐强,等.酚醛基碳纤维制备方法研究进展[J].应用化工,2017,46(8):1624-1626.
[8]李辉,杜建华,王浩旭,等.碳纤维织物增强树脂基摩擦材料摩擦学性能研究[J].功能材料,2017,48(4):4100-4104.
[9] Xiao Xian,Hong Xia,Guo qi,et al. Effect of KCl on growth of carbon fibers during carbonization of phenolic resin[J].China’s Refractories,2016,25(2):7-11.
[10] Wang C Y,Li M W,Wu Y L,et al. Preparation and microstructure of hollow mesophase pitch-based carbon fibers[J]. Carbon,1998,36(12):1749-1754.
[11] Roczniak K,Biernacka T,Skar6)zyński M. Some properties and chemical structure of phenolic resins and their derivatives[J]. Journal of Applied Polymer Science,2010,28(2):531-542.
[12] Worasuwannarak N,Hatori S,Nakagawa H,et al. Effect of oxidation pre-treatment at 220 to 270℃on the carbonization and activation behavior of phenolic resin fiber[J].Carbon,2003,41(5):933-944.
[2]张东卿,史景利,郭全贵,等.炭化过程中中空酚醛纤维结构性能的变化[J].材料工程,2011(9):72-76.
[3]任东雪,焦明立,郑瑾,等.酚醛基活性炭纤维的研究进展[J].合成纤维工业,2017,40(5):62-67.
[4] Xie G,Chen Z,Ramakrishna S,et al. Orthogonal design preparation of phenolic fiber by melt electrospinning[J].Journal of Applied Polymer Science,2015,132(38):1-8.
[5]王迎,谢概,刘勇.静电纺丝法制备酚醛纤维研究进展[J].高分子通报,2016(3):1-5.
[6] Imaizumi S,Matsumoto H,Suzuki K,et al. Phenolic resinbased carbon thin fibers prepared by electrospinning:Additive effects of poly(vinyl butyral)and electrolytes[J]. Polymer Journal,2009,41(12):1124-1128.
[7]陈坤,李俊,唐强,等.酚醛基碳纤维制备方法研究进展[J].应用化工,2017,46(8):1624-1626.
[8]李辉,杜建华,王浩旭,等.碳纤维织物增强树脂基摩擦材料摩擦学性能研究[J].功能材料,2017,48(4):4100-4104.
[9] Xiao Xian,Hong Xia,Guo qi,et al. Effect of KCl on growth of carbon fibers during carbonization of phenolic resin[J].China’s Refractories,2016,25(2):7-11.
[10] Wang C Y,Li M W,Wu Y L,et al. Preparation and microstructure of hollow mesophase pitch-based carbon fibers[J]. Carbon,1998,36(12):1749-1754.
[11] Roczniak K,Biernacka T,Skar6)zyński M. Some properties and chemical structure of phenolic resins and their derivatives[J]. Journal of Applied Polymer Science,2010,28(2):531-542.
[12] Worasuwannarak N,Hatori S,Nakagawa H,et al. Effect of oxidation pre-treatment at 220 to 270℃on the carbonization and activation behavior of phenolic resin fiber[J].Carbon,2003,41(5):933-944.