共查询到16条相似文献,搜索用时 187 毫秒
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以氨气为反应气体,对芳纶Ⅲ进行等离子体表面改性处理,研究了等离子体处理时间和处理功率对纤维表面性能的影响;采用X射线光电子能谱、场发射扫描电镜、接触角和微脱粘实验等测试方法对改性前后纤维表面元素组成、形貌、润湿能力以及界面粘结强度进行表征。结果表明:芳纶Ⅲ经过氨气等离子体改性后,表面含氮极性基团的含量增加,粗糙程度增大,润湿能力得到明显的改善;当氨气等离子体处理时间为15 min,功率为100 W时,芳纶Ⅲ与环氧树脂的界面粘结强度从处理前的12.9 MPa提高到18.2 MPa,与水的接触角由处理前的71.4°下降到46.8°。 相似文献
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芳纶表面改性研究进展 总被引:17,自引:1,他引:17
简单回顾了芳纶的发展历史,阐述了表面涂层法、化学改性、物理改性等几种芳纶表面改性方法的研究现状,同时介绍了3种常用来表征纤维复合材料界面结合强度的方法,最后指出芳纶表面改性技术的发展方向。 相似文献
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综述了近几年用于芳纶表面改性的物理方法的研究进展,重点介绍了表面涂层、等离子体处理、γ射线处理、超声波处理、紫外线辐射和超低温处理等改性方法的研究现状及优缺点,并对芳纶表面改性的发展趋势进行了展望。 相似文献
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Argon low‐temperature plasma modification of chopped aramid fiber and its effect on paper performance of aramid sheets 下载免费PDF全文
Chopped aramid fiber was modified by an argon low‐temperature plasma treatment to enhance the interfacial strength of aramid paper. The water contact angle of the aramid fiber and the tensile strength, tearing strength, and evenness of the aramid sheets were investigated under different conditions, and the parameters of the argon low‐temperature plasma modification, like gas pressure, discharge power, and discharge time, were optimized. The chemical structure and surface morphology of the fiber after plasma modification were characterized by X‐ray photoelectron spectroscopy, atomic force microscopy, and scanning electron microscopy. The strengthening mechanism of aramid paper by low‐temperature plasma modification was also studied. It was found that the argon low‐temperature plasma treatment introduced some new polar groups onto the fiber surface and increased the fiber surface wettability and roughness. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017 , 134, 45215. 相似文献
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我国芳纶纤维的发展概况 总被引:2,自引:0,他引:2
张蓓 《精细与专用化学品》2010,(10):6-9
介绍了芳纶纤维的种类、性能、应用以及发展概况,分析了我国芳纶纤维的供需现状及发展前景。2009年我国芳纶纤维的生产能力达到7600t/a,净进口量2125t,国内产量仍不能满足市场需求。目前,我国芳纶产业在技术、生产效率、生产能力、设备、应用等方面与国外还有一定差距,因此我国芳纶产业化的发展是非常必要和紧迫的。 相似文献
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我国芳纶产业发展现状 总被引:1,自引:0,他引:1
由于芳纶(芳香族聚酰胺)纤维具有优异的化学稳定性、热稳定性及高强、高模等特性,因此,作为高性能的特种纤维,已广泛应用于众多领域,得到了世界各国的广泛关注。本文主要综述了我国芳纶纤维产业的发展现状及其发展前景。 相似文献
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In this work, solutions of rare earth modifier (RES) and epoxy chloropropane (ECP) grafting modification method were used for the surface treatment of aramid fiber. The effect of chemical treatment on aramid fiber has been studied in a composite system. The surface characteristics of aramid fibers were characterized by Fourier transform infrared spectroscopy (FTIR). The interfacial properties of aramid/epoxy composites were investigated by means of the single fiber pull‐out tests. The mechanical properties of the aramid/epoxy composites were studied by interlaminar shear strength (ILSS). As a result, it was found that RES surface treatment is superior to ECP grafting treatment in promoting the interfacial adhesion between aramid fiber and epoxy matrix, resulting in the improved mechanical properties of the composites. Meanwhile, the tensile strengths of single fibers were almost not affected by RES treatment. This was probably due to the presence of reactive functional groups on the aramid fiber surface, leading to an increment of interfacial binding force between fibers and matrix in a composite system. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 102:4165–4170, 2006 相似文献