仿竹结构多孔聚醚砜基碳纤维复合材料  

Bamboo structure like carbon fiber reinforced porous polyethersulfone matrix composites

作　　者：许培俊[1] 韩磊 王临江 郭新良 刘荣海 高尚林 XU Peijun;HAN Lei;WANG Linjiang;GUO Xinliang;LIU Ronghai;GAO Shanglin(School of Materials Science and Engineering,Chang'an University,Xi'an 710064,China;Electric Power Research Institute of Yunnan Power Grid CO.,LTD.,Kunming 650217,China;GZD,Dresden 01187,Germany)

机构地区：[1]长安大学材料科学与工程学院,西安710064 [2]云南电网有限责任公司电力科学研究院,昆明650217 [3]德国GZD公司,德累斯顿01187

出　　处：《复合材料学报》2023年第4期2049-2055,共7页Acta Materiae Compositae Sinica

基　　金：国家自然科学基金面上项目(51978072);陕西省重点研发计划项目(2022 GY-371);长安大学中央高校基本科研业务费专项资金资助(300102312404)。

摘　　要：竹子是以竹纤维为增强体、木质素为基体所构成的天然复合材料,其竹纤维赋予了竹材高强度的特点,多孔木质素结构赋予了竹材轻质、高韧性的特点。本文通过模仿竹子的结构特征,采用液相浸渍法和浸没沉淀相转化法在碳纤维表面沉积多孔聚醚砜聚合物,制备出兼具轻质、高韧性、高强度特点的仿竹结构多孔聚醚砜基碳纤维复合材料(CF/foam PES)。研究结果表明:与传统密实结构的聚醚砜基碳纤维复合材料(CF/condense PES)相比,本文制备出的聚醚砜基碳纤维复合材料的海绵状多孔聚醚砜结构降低了复合材料的表观密度,且CF/foam PES的比强度相对于CF/condense PES提高了234.5%,比模量提高了192.6%;多孔聚醚砜使CF/foam PES具有优异的吸能性能。Bamboo is a natural composite material,which is composed of bamboo fiber as reinforcement and lignin as matrix.The bamboo fiber structure endows bamboo with the characteristics of high strength,and the porous lignin structure endows bamboo with the characteristics of light and high toughness.In this paper,carbon fiber reinforced bamboo structure porous polyethersulfone matrix composites(CF/foam PES)were prepared by imitating the structural characteristics of bamboo,and porous polyethersulfone was deposited on the surface of carbon fiber by liquid immersion method and immersion precipitation phase transformation method.The results show that:compared with traditional carbon fiber reinforced dense polyethersulfone matrix composites(CF/condense PES),CF/foam PES prepared in this paper has low apparent density;the specific strength and specific modulus of CF/foam PES are 234.5%and 192.6%higher than those of CF/condense PES.Moreover,the porous polyethersulfone matrix enhances the energy absorption properties of CF/foam PES.

关 键 词：仿竹结构 多孔聚醚砜 比强度 比模量 吸能 碳纤维 

分 类 号：TB332[一般工业技术—材料科学与工程]