碳纳米管喷涂层增韧玻璃纤维/环氧树脂基复合材料的制备与增韧机制  

Preparation and toughening mechanism of glass fiber/epoxy composites toughened by carbon nanotube sprayed layers

作　　者：赵红晨 欧云福 吴龙强 茅东升 ZHAO Hongchen;OU Yunfu;WU Longqiang;MAO Dongsheng(School of Material Science and Chemical Engineering,Ningbo University,Ningbo 315211,China;Ningbo Institute of Materials Technology and Engineering,Chinese Academy of Sciences,Ningbo 315201,China)

机构地区：[1]宁波大学材料科学与化学工程学院,宁波315211 [2]中国科学院宁波材料技术与工程研究所,宁波315201

出　　处：《复合材料学报》2024年第5期2364-2373,共10页Acta Materiae Compositae Sinica

基　　金：宁波市自然科学基金(2021J208);中国博士后科学基金(2022M713241);中科院“百人计划”(2021R01005);宁波市“甬江引才工程”(2021A-045-C)。

摘　　要：玻璃纤维增强树脂基复合板(GFRP)由于价格便宜、力学性能优异、耐疲劳等优点,广泛应用于风电叶片、运动器材等领域。但是上浆剂和树脂间的不良配合易导致层间分层破坏。本文通过在玻璃纤维织物表面喷涂碳纳米管(CNT)喷涂层,在不破坏面内性能的情况下,使双酚F型和双酚A型环氧树脂基体的玻璃纤维/树脂复合材料的层间I型断裂韧性分别提高了71.7%和23.4%。结果表明:CNT-丙酮分散液喷涂工艺在玻璃纤维上稳定地负载了CNT,成功改变了玻璃纤维表面形态,并通过机械锁合、拔出耗能、延长裂纹扩展路线和触发纤维桥接等机制,成功对不同树脂基体的GFRP实现增韧。Glass fiber reinforced polymer(GFRP)composites are widely used in the fields of wind turbine blades and sports equipment due to their low cost,excellent mechanical performance and fatigue resistance.However,poor compatibility between sizing agent and resin can easily lead to interlaminar delamination.In this paper,the mode I interlaminar fracture toughness of GFRP with bisphenol F and bisphenol A epoxy resin matrices is improved by 71.7%and 23.4%through spraying a carbon nanotube(CNT)spray layer on the surface of fiberglass fabrics without sacrificing in-plane properties.Experimental results show that the CNT/acetone dispersion spray process stably loads CNTs on fiberglass and successfully changes the surface morphology of fiberglass.Through mechanisms such as mechanical interlocking,pull-out energy consumption,extension of crack propagation path as well as triggering of fiber bridging,the GFRP with different resin matrices is successfully toughened.

关 键 词：碳纳米管 玻璃纤维复合材料 层间增韧 喷涂层 增韧机制 

分 类 号：TB332[一般工业技术—材料科学与工程]