静电纺丝制备金刚石/聚丙烯腈杂化复合纤维  

Preparation and thermal properties of the diamond/polyacrylonitrile composite fibers generated from electrospinning

作　　者：张旺玺[1,2,3] 孙长红 王艳芝 成晓哲 梁宝岩[1,3] 秦琦 ZHANG Wangxi;SUN Changhong;WANG Yanzhi;CHENG Xiaozhe;LIANG Baoyan;QIN Qi(School of Materials and Chemical Engineering,Zhongyuan University of Technology,Zhengzhou 451191,China;He＇nan Province Collaborative Innovation Center of Textiles and Fashion,Zhengzhou 451191,China;School of Textiles,Zhongyuan University of Technology,Zhengzhou 451191,China;He＇nan Joint International Research Laboratory of Diamond Engineering Technology,Zhengzhou 451191,China)

机构地区：[1]中原工学院材料与化工学院,郑州451191 [2]河南省纺织服装协同创新中心,郑州451191 [3]河南省金刚石工具技术国际联合实验室,郑州451191 [4]中原工学院纺织学院,郑州451191

出　　处：《复合材料学报》2018年第11期2919-2926,共8页Acta Materiae Compositae Sinica

基　　金：国家自然科学基金(51602356);河南省高校科技创新团队项目(151RTSTHN004);教育厅重点项目(18A430035)

摘　　要：为了改善金刚石在聚合物中的均匀分散性,并提高导热性能,以不同粒度的金刚石和聚丙烯腈(PAN)共聚物为原料,采用静电纺丝方法制备得到金刚石/PAN杂化复合纤维。通过改变纺丝溶液中金刚石的添加量,研究了不同金刚石含量及不同粒度的金刚石对金刚石/PAN杂化复合纤维形态和热性能的影响。研究结果表明,静电纺丝可以有效解决微米级金刚石在PAN聚合物中的分散问题,金刚石的粒度对纺丝的稳定性和连续性影响很大,粒度为0.5～1μm的金刚石经过纺丝可以有效地包覆在纤维中。当金刚石的粒度大于1～2μm时,纺丝时稳定性差,纤维中很少或几乎没有包覆金刚石颗粒。当金刚石粒度为0.5～1μm、实际质量分数为38.5wt%时,金刚石/PAN杂化复合纤维热导率最高,达到1.923W/(m·K)。In order to increase the distribution of diamond particles and the thermal conductivity of polyacrylonitrile（PAN）copolymers,the diamond/PAN hybrid composite fibers were obtained via electrospinning using PAN and different sized diamonds as raw materials.The effects of different contents and various sizes of diamond on the morphology and thermal properties of diamond/PAN composite fibers were studied with changing the mass fraction of diamond addition.The results show that electrospinning can give the ability to deliver microdiamonds in the form of well-dispersed particles into the polymer matrix,and the stability and continuity of the spinning are greatly affected by the particle size of the diamonds.The size of diamond of 0.5-1μm can be effectively coated in the diamond/PAN fiber,and the thermal conductivity of diamond/PAN fibers reaches 1.923 W/（m·K）when the actual mass fraction of diamond is 38.5 wt%.However,when the size of diamond particles is greater than 1-2μm,the stability of the spinning is poor.As a result,it will lead to the diamond being little or not even appearing in the diamond/PAN fibers.

关 键 词：静电纺丝 聚丙烯腈共聚物 金刚石 复合纤维 导热率 有机无机杂化 

分 类 号：TQ164[化学工程—高温制品工业]