Strong and Tough TPU Fibers with Orientedly Aligned CNTs Reinforced by Amorphous ZrO_(2)  

作　　者：LI Yangbei LIU Shaojia ZHAO Hewei GUO Lin 

机构地区：[1]School of Chemistry,Beihang University,Beijing,100191,P.R.China

出　　处：《Chemical Research in Chinese Universities》2022年第3期763-768,共6页高等学校化学研究（英文版）

基　　金：This work was supported by the National Key R&D Program of China(Nos.2020YFA0710403,2020YFA0710404);the National Natural Science Foundation of China(Nos.52073008,U1910208).

摘　　要：High strength and high toughness are vital for fibers’engineering applications,but are hard to simultaneously achieve.Herein,we synthesize a carbon nanotube(CNT)-thermoplastic polyurethanes(TPU)fiber reinforced by an amorphous ZrO_(2)layer through the wet-spinning method.The amorphous ZrO_(2)layer is in-situ grown on the surface of CNT and the hybrid nanowires are orientedly aligned with TPU to form the ternary fiber.The fiber possesses an excellent combination of high strength(84.6 MPa)and toughness(126.7 MJ/m^(3)),which is outstanding when compared with previously reported CNT-TPU fibers.The pull-out of nanowires attributed to the oriented alignment structure and the enhanced interface and restriction of deformation obtained from the amorphous ZrO_(2)layer are considered as the primary strengthening and toughening mechanisms.We anticipate that our fiber synthesis strategy gives a new path to design strong and tough fibers.

关 键 词：Strong and tough fiber Carbon nanotube Amorphous ZrO_(2) Orientated alignment WET-SPINNING 

分 类 号：TB383[一般工业技术—材料科学与工程]