成都成立高性能纤维材料联盟

成都市高性能纤维及其复合材料产业技术创新联盟日前在成都市新材料产业功能区（新津县）正式成立。 该联盟的成立旨在提升成都市高性能纤维产业技术创新能力,促进各方优势互补和协同创新,加速技术推广和产业化应用,推动高性能纤维产业的发展。四川大学、中蓝晨光化工研究院、航天拓鑫玄武岩实业有限公司、得阳化学有限公司、成都市科学技术情报研究所等11家第一批成员单位,在启动会上签订了《成都市高性能纤维及复合材料产业技术创新联盟公约》。     

高性能纤维及其复合材料的研究与应用

本文概述了高性能纤维及其复合材料的特点与分类,重点介绍了碳纤维、芳纶纤维、超高分子量聚乙烯纤维的基本性能及其在航空航天、交通运输、能源工业、体育用品、及防护领域中的应用现状,还简要介绍PBO、玄武岩两种纤维的性能和应用。最后对未来高性能纤维及其复合材料的发展进行了展望。     

3种高性能纤维材料的研究进展

重点围绕国内外高性能纤维的发展水平及其在复合材料中的主要用途,介绍了目前广泛应用于树脂基复合材料的3种高性能纤维———碳纤维、芳纶及超高相对分子质量聚乙烯纤维,分析对比了这3种高性能纤维的国内外最新研究进展,并对今后的应用前景提出了展望。     

我国专项推动高性能纤维复合材料产业化

据报导,国家将于2008至2009年组织实施高性能纤维复合材料高技术产业化专项,以此推动我国新材料产业的快速发展。满足日益增长的市场需求。专项将重点支持碳纤维、芳纶纤维、高强聚乙烯纤维及其高性能复合材料的生产技术及关键装备的产业化示范。其中,将重点支持千吨级高性能碳纤维和聚丙烯腈原丝生产工艺技术,预氧化炉、碳化炉等大型关键设备,纺丝油剂、碳纤维上浆剂、     

高性能碳纤维产业化实现突破

<正>国家发改委于2008～2009年组织实施了高性能纤维复合材料高技术产业化专项,重点支持碳纤维、芳纶纤维、高强聚乙烯纤维及其高性能复合材料的生产技术及关键装备的产业化示范,主要目标是突破制约我国高性能纤维及复     

高性能纤维复合材料的研究及应用

高性能纤维复合材料是以高性能纤维作为增强材料,树脂作为基体,通过加工成型得到的复合材料,具有质轻、高强高模、抗疲劳、耐腐蚀、可设计性强、易加工成型等优异性能,得到广泛的应用。本文介绍了高性能纤维复合材料常用高性能纤维和常用树脂基体、复合材料界面和应用领域,并分析了国内高性能纤维复合材料发展存在的问题。     

高性能聚乙烯纤维及其复合材料的进展

本文介绍了高性能聚乙烯纤维的优点与不足及其一些改进方法。高性能聚乙烯纤维复合材料的种类及应用进展。     

成都成立高性能纤维材料创新联盟

<正>成都市高性能纤维及复合材料产业技术创新联盟日前在成都市新材料产业功能区(新津县)正式成立。该联盟的成立旨在提升成都市高性能纤维产业技术创新能力,促进各方优势互补和协同创新,加速技术推广和产业化应用,推动高性能纤维     

高性能聚乙烯纤维及其复合材料研究进展

作为新型有机纤维,高性能聚乙烯纤维的性能与应用研究是科研人员研究的热点之一。本文综述了近年来高性能聚乙烯纤维的制备、表面改性及其复合材料应用方面的研究进展。     

先进复合材料用高性能纤维发展概述

作为材料科学的一个重要分支,纤维增强复合材料以其优异的性能取得了飞速发展并且在社会各领域得到了越来越广泛的应用。在先进复合材料中,目前最常应用的高性能增强纤维有碳纤维、芳香族聚酰胺纤维以及超高分子量聚乙烯纤维等。本文即对这些纤维的发展及其在先进复合材料中的应用情况作一概述。     

新形势下对我国能源安全问题的思考

分析了目前我国能源安全形势与能源安全问题,认为当前我国能源形势基本稳定,能源供应总体安全,能源消费结构正向轻质化、清洁化和低碳化方向发展,但也存在一些问题,主要包括:能源需求总量增长过快,消费结构亟待调整;能源发展中的环境问题突出,CO_2减排压力加大;地缘政治影响不确定性因素增加,潜在影响我国能源安全;油气战略储备不足,应对突发事件风险能力较低;非化石能源消费占比低,替代能源发展较慢。在我国经济新常态下,应树立新的能源安全观,着力推动能源革命,构建适应我国经济社会发展需求的新型国家能源安全体系。     

Research and application prospect of short carbon fiber reinforced ceramic composites

With the advantage of high temperature resistance, low expansion, low density and excellent thermal stability, carbon fiber reinforced ceramic composites have a very wide range of applications in aerospace, military, energy, chemical industries and transportation. Short carbon fiber reinforced ceramic composites are characterized by simple processes, low manufacturing costs, short preparation times and automated production, can be used in fields such as friction materials and thermal protection system. This paper reviews the current status and recent advances in research on homogenization techniques, mechanical properties, thermal properties and frictional properties of short carbon fiber reinforce ceramic composites. Different processing routes for short carbon fiber reinforced ceramic composites, including reactive melt infiltration (RMI), hot pressing (HP), spark plasma sintering (SPS) and pressureless sintering, the advantages and drawbacks of each method are briefly discussed. The future development direction of low-cost manufacturing short carbon fiber reinforced ceramic composites is prospected.     

创新推动高性能纤维及其复合材料制品的发展

主要介绍了碳纤维及其复合材料的创新与发展动向,包括主要企业最新动态,以及中间相与通用级沥青基碳纤维、其他原丝的低成本碳纤维、对位和间位芳酰胺纤维、碳化硅和氧化铝陶瓷纤维的最新创新动向和扩大应用情况。指出高性能纤维及其复合材料的工艺技术创新,体现在生产工艺的高效化、产品的高性能化和低成本化以及应用领域的不断扩大,其中各种助剂起着重要作用。     

沥青基中空碳纤维的制备及其吸波性能

以中间相沥青为原料,采用氮压式纺丝机制备了不同炭化温度的中空截面沥青基碳纤维,通过SEM表征了其断面形貌,利用矢量网络分析仪研究了炭化温度对中空碳纤维电磁损耗性能的影响。结果显示,最佳的炭化温度为900 ℃时,中空碳纤维具有最大电磁损耗;研究了铺层方式对复合材料吸波性能影响,利用弓形法对复合材料的反射率进行了测试,结果显示,碳纤维交叉铺层时,吸波合格带宽为10 GHz,最大吸收峰在25 dB。     

Biopolyamide hybrid composites for high performance applications

This study focuses on the performance characteristics of wood/short carbon fiber hybrid biopolyamide11 (PA11) composites. The composites were produced by melt‐compounding of the fibers with the polyamide via extrusion and injection molding. The results showed that mechanical properties, such as tensile and flexural strength and modulus of the wood fiber composites were significantly higher than the PA11 and hybridization with carbon fiber further enhanced the performance properties, as well as the thermal resistance of the composites. Compared to wood fiber composites (30% wood fiber), hybridization with carbon fiber (10% wood fiber and 20% carbon fiber) increased the tensile and flexural modulus by 168% and 142%, respectively. Izod impact strength of the hybrid composites exhibited a good improvement compared to wood fiber composites. Thermal properties and resistance to water absorption of the composites were improved by hybridization with carbon fiber. In overall, the study indicated that the developed hybrid composites are promising candidates for high performance applications, where high stiffness and thermal resistance are required. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016 , 133, 43595.     

煤基石墨烯及复合材料在储能领域的应用

石墨烯及复合材料具有比表面积大、电导率高、导热性能和力学性能良好等优点,在电极材料、传感器、储氢材料等领域具有广泛的应用。但以高碳含量的天然资源煤为前体制备煤基石墨烯及复合材料达到煤炭清洁高效利用的研究目前报道有限,尤其是将其作为电极材料应用到储能领域的研究较少。本文重点总结了以不同煤质及衍生物为原料构建不同形貌和结构的煤基石墨烯及复合材料的方法以及存在的问题,详细介绍了煤基石墨烯及复合材料在储能领域,尤其是超级电容器、锂离子电池及钠离子电池领域的应用研究现状,最后提出了当前煤基石墨烯及复合材料的主要研究方向。该综述旨在为煤基新型石墨烯及复合材料的制备开发以及在储能领域的应用提供一定的思路。     

The Effect of Abrasion Surface Treatment on the Bonding Behavior of Various Carbon Fiber-Reinforced Composites

Abstract

In this paper we show that current abrasion surface preparation practices do not perform equally on all composite surfaces. The effect of abrasion on the adhesive bond strength of various carbon fiber (CF) composites was investigated. Cyanate ester composites were fabricated using a low, a high and an ultra high modulus carbon fiber (T300, M55J, K13C2U). XPS and contact angle measurements showed that the surface energy of all three composites increased due to the removal of contaminants as well as increased in surface roughness. However, the lap shear strength degraded sharply for a number of cases, irrespective of roughness, depending on the fiber used. Composites utilizing lower modulus carbon fibers increased in adhesive bond strength following abrasion in comparison to composites with higher modulus fibers. As the modulus of the fiber and the abrasive grit size increased, the degree of degradation caused by abrasion was shown to increase significantly. Scanning electron microscopy (SEM) and profilometry measurements showed the development of an abrasion-affected zone that was especially prevalent for higher stiffness composites. The failures for the higher modulus specimens were caused by subsurface damage located a few fiber diameters below the abraded surface. However, an alternate technique using atmospheric plasma surface treatment exhibited efficient removal of contaminants while showing no degradation of bond quality when treating these ultra high modulus composites.     

高模型碳纤维的发展现状及其在航天领域的应用

综述了国内外高模型碳纤维的发展现状及其上浆剂研制和应用情况,并基于高模型碳纤维性能特点对其在航天器结构上的应用进行了介绍,最后对我国高模型碳纤维产业的发展前景进行了展望。     

A review of the research progress on the interface between oxide fiber and oxide ceramic matrix

Oxide ceramics have excellent high temperature performance, superior thermal and chemical stability, which can be used in high temperature oxidizing environments, while oxide ceramics generally have low toughness and are prone to catastrophic damage... Oxide ceramics can be reinforced by high performance ceramic fibers to improve the fracture strength and fracture toughness, thus expanding its application in high-temperature components such as aero-engine combustion chambers and tail nozzles. The interface between fiber and matrix is an important factor that determines the performance of the composites. By tailoring the interface, the energy dissipation mechanisms such as fiber debonding and fiber pull-out can be brought into play to avoid the catastrophic damage of the composites. This review paper summarizes the recent research progress of the oxide fiber/oxide ceramic matrix composites interface. The mechanical properties of the interface and the design principles of the interface engineering are discussed, and types of interfaces and coating preparation methods are reviewed.     

Mechanisms of Deformation and Failure in Carbon-Matrix Composites Subject to Tensile and Shear Loading

The operative damage mechanisms in a series of C-matrix composites loaded in tension and shear have been investigated. The composites contained either C fibers or Nicalon fibers, both with and without a carbon coating. The matrix consisted primarily of ex-phenolic carbon with a final carbon layer introduced by chemical vapor infiltration. Some composites have a high fiber/matrix sliding stress. In these composites, failure is characterized by localized fiber pullout. Other composites have a low. Failure of these materials is characterized by stochastic fiber failure with a diffuse fracture surface. The operative damage mechanisms have been identified and used in conjunction with available models to rationalize composite performance in terms of constituent properties (fiber, matrix, interface). The properties emphasized include the inelastic strain, as well as the ultimate tensile and shear strengths.