高性能纤维的发展及其在先进复合材料中的应用

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。增强纤维作为纤维增强复合材料的一个重要组分,其性能如何将直接影响着复合材料的应用层次,而且高性能增强纤维作为高竞争性、高赢利性品种一直是世界各大生产商乐于巨额投资的研发项目品种,它的发展及其在先进复合材料中的适应程度在目前乃至将来都有许多值得探索的地方。在先进复合材料中,目前最常应用的高     

多相纤维协同增强尼龙基复合材料增材制造研究

连续纤维增强复合材料(C-FRP)具有杰出的力学性能,在航空航天、交通运输等领域得到了广泛的应用.熔丝制造(FFF)是应用最为广泛的增材制造技术,在连续纤维增强复合材料复杂构件制造中具有巨大的潜力.然而,熔丝制造技术制备的复合材料构件与传统工艺制造的复合材料构件间存在较大的力学性能差异,严重阻碍了此类先进复合材料构件的...     

剪切增稠液体增强纤维复合材料融合体育发展研究

剪切增稠液体是一种固液混合状态的胶体,介绍了剪切增稠液体及其增强纤维复合材料的制备工艺与流程,分析了剪切增稠液体增强纤维复合材料在体育领域的应用,旨在为体育产业应用先进材料提供借鉴.     

碳化硅纤维及其复合材料

碳化硅纤维及其复合材料是目前使用温度最高的增强材料和先进复合材料，本文简要介绍先驱体转换法和化学气相沉积法制备碳化硅纤维的工艺，不同工艺方法制备的碳化硅纤维的性能比较，碳化硅纤维及其复合材料的现状与应用。     

芳纶纤维增强复合材料的机械加工实例研究

在复合材料应用范围不断拓展的背景下,对复合材料加工性能提出了更高的要求。而芳纶纤维复合材料的应用,有望加强复合材料加工性能。因此,以芳纶纤维性质为切入点,阐述了芳纶纤维材料缺陷,分析了芳纶纤维增强复合材料优势,并以医疗床板中芳纶纤维增强复合材料加工为例,对芳纶纤维在增强玻璃布及树脂的机械加工性能进行了分析。     

PBO纤维与石英纤维混编增强氰酸酯树脂基复合材料的研究

结合PBO纤维增强树脂基复合材料优异的介电性能和石英纤维增强树脂基复合材料优异的力学性能,本文设计了石英纤维与PBO纤维体积比55∶45混合编织,同时采用空气气氛对混编纤维表面进行等离子体处理,等离子体处理工艺为400W/10min,制备的氰酸酯树脂复合材料力学性能较纯PBO纤维增强氰酸酯树脂复合材料具有更加优异的性能,弯曲强度提高了62%,层间剪切强度提升了231%,大大加快了PBO纤维复合材料在透波复合材料领域的应用步伐。     

纤维在水泥混凝土中的应用

本文概述了纤维在水泥混凝土中应用的历史和现状，简要阐述了纤维增强水泥混凝土材料的增强机理，综述了常用纤维类型及纤维在水泥混凝土复合材料中所起的作用，并展望了纤维增强水泥混凝土复合材料的发展前景。     

环氧基纤维增强复合材料应用面面观

进行了环氧基玻璃纤维覆铜箔板(电子玻璃纤维基板)、环氧基纤维增强复合材料用于航天航空结构材料、环氧基纤维复合材料在运动器材方面应用、环氧基纤维增强复合材料高压管道和压力容器、环氧乙烯基酯树脂在化工防腐中运用及环氧树脂运用于建筑结构工程补强等方面的调查。报告了环氧基纤维增强复合材料应用的情况。     

纤维增强复合材料及其在体育娱乐器材中的应用

主要介绍了纤维增强材料在体育娱乐器材中的应用。首先介绍了纤维增强复合材料的主要性能及其在体育器材领域内的优势,然后阐述了增强用纤维材料及织物结构和基体树脂,最后介绍了纤维增强复合材料在滑雪板、高尔夫球杆、自行车和网球拍中的应用。     

连续纤维增强热塑性复合材料的研究进展

综述了连续纤维增强热塑性复合材料的国内外研究状况及发展趋势,并介绍了先进的纤维分散技术。     

长玻璃纤维增强聚丙烯复合材料的高性能、低成本化技术

本文通过直接挤出混炼的方法制备了长玻璃纤维增强聚丙烯复合材料,研究了长纤维增强聚丙烯复合材料高性能、低成本化的方法。通过与连续玻璃纤维增强聚丙烯织物的组合,获得了力学性能超过玻璃纤维毡增强聚丙烯复合材料的高性能复合材料。在树脂基体中掺混廉价的填料及回收的聚丙烯树脂,结合适当的填料表面处理方法及废弃回收树脂的增韧及抗老化改性,在力学性能保持一定水平的基础上,可有效降低材料的成本。     

Progress in Carbon Fiber and Its Polypropylene- and Polyethylene-Based Composites

Due to their lightweight and excellent toughness, carbon fiber (CF) and its reinforced thermoplastic composites are suitable for high-performance applications such as aerospace, aviation, automotive and sport equipments. In this study, comprehensive detail is provided on the production of carbon fiber, its various forms and geometry and their corresponding effects on the mechanical properties of CF and its reinforced polypropylene (PP) and polyethylene (PE) composites. Here we discuss extensively various methods reported in literature on improving the interfacial fiber-matrix adhesion and dispersion in order to achieve better mechanical properties for such composites.     

Thermotropic polyester amide-carbon fiber composites

Liquid crystal polymers (LCP) have been developed for the first time as a thermoplastic matrix for high-performance composites. A successful melt impregnation method has been developed that results in the production of continuous carbon fiber (CF)-reinforced LCP prepreg tape. Subsequent layup and molding of prepreg into laminates has yielded composites of good quality. Tensile and flexural properties of LCP-CF composites are comparable to those of epoxy-CF composites. LCP-CF composites have better impact resistance than the latter, although epoxy-CF composites possess superior compression and shear strength. LCP-CF composites have good property retention until 200°F (67% of room temperature value). Above 200°F, mechanical properties are found to decrease significantly. Experimental results indicate that the poor compression and shear strength may be due to the poor interfacial adhesion between the matrix and carbon fiber.     

Tribological behavior and applications of carbon fiber reinforced ceramic composites as high-performance frictional materials

Due to the favorable tribological, mechanical, chemical, and thermal properties, carbon fiber reinforced ceramic composites, especially carbon fiber reinforced carbon and silicon carbide dual matrix composites (C/C–SiC), has been considered as high-performance frictional materials. In this paper, current applications and recent progress on tribological behavior of C/C–SiC composites are reviewed. The factors affecting the friction and wear properties, including the content of silicon carbide and carbon matrix, carbon fiber preform architecture, as well as the matrix modification by alloy additives and C/C–SiC composites under various test conditions are reviewed. Furthermore, based on the current status of researches, prospect of several technically available solutions for low-cost manufacturing C/C–SiC composites is also proposed.     

Low-temperature fast curable behavior and properties of bio-based carbon fiber composites based on resveratrol

Environmentally friendly materials are an integral part of sustainable chemistry, and bio-based polymer composites are an important class of materials. The manufacture of composites is expected to reduce or even eliminate the use of adjuvants, considering the importance of reducing energy consumption and avoiding health and environmental risks. In this study, a phenyl-containing, polyfunctional, bio-based epoxy resin (TGER) was synthesized, and carbon fiber-reinforced, bio-based epoxy resin composites were fabricated by vacuum-assisted resin infusion using two aromatic amine curing agents, 4,4′-diaminodiphenylmethane (DDM) and 3,3′-diethyl-4,4′-diaminodiphenylmethane (DEDDM). Curing reactions and rheological behavior studies showed that TGER had higher curing reactivity toward DDM and DEDDM than to diglycidyl ether of bisphenol A (DGEBA) and possessed good processability. The results indicated that the resveratrol-based epoxy resin displayed low-temperature fast curing properties. The evaluation of the mechanical properties of the carbon fiber composites showed that the flexural strengths of CF/TGER/DDM and CF/TGER/DEDDM were 520 and 628 MPa, respectively. The initial decomposition temperature of CF/TGER composites is above 200°C. Furthermore, the carbon fiber–reinforced biopolymers possess excellent heat resistance. Therefore, carbon fiber-reinforced, resveratrol-based epoxy resin composites are promising candidates as alternatives to petroleum-based high-performance carbon fiber composites.     

Effect of KH550 on the Preparation and Compatibility of Carbon Fibers Reinforced Silicone Rubber Composites

Silicone rubber has good heat resistance, but its mechanical properties are poor. To improve the mechanical properties of the silicone rubber, the carbon fiber / silicone rubber composites were prepared in this paper, in which the silicone rubber was used as the matrix, the high-performance carbon fiber (CF) treated with coupling agent is used as the reinforcement. The best composite formulation, the types and content of coupling agent are determined by testing mechanical properties of the composites. The morphology structures of the composites were observed by scanning electron microscope (SEM), the compatibility between carbon fiber and silicone rubber was studied by infrared spectrum analysis (IR), dynamic thermal mechanical analysis (DMA) and X-ray photoelectron spectroscopy (XPS). The results show that the best composite formulation is silicone rubber of 100 phr, carbon fiber of 12 phr, coupling agent KH550 of 2.5 phr. The best first curing conditions are at 175 ^°C under 10 MPa for 30 min, the postcuring conditions are at 200 ^°C for 2h. The compatibility between carbon fiber treated with KH550 and silicon rubber is the best by SEM, IR, DMA and XPS analysis, and confirm that the coupling agent KH550 plays a compatilizer role in the preparation process of the carbon fiber/silicone rubber composites.     

Improvement of interfacial interactions in CF/PEEK composites by an s-PSF/graphene oxide compound sizing agent

The interfacial interactions of carbon fiber (CF)-reinforced polymer composites is a key factor affecting the overall performance of the material. In this work, we prepared a sulfonated poly(ether sulfone)–graphene oxide mixed sizing agent to modify the interface of CF/PEEK composites and improve the interfacial properties between the PEEK matrix and CF. Results showed that the mechanical and interfacial properties of CF/PEEK composites are improved by the sizing agent. Specifically, the flexural strength, flexural modulus and interlaminar shear strength of the materials reached 847.29 MPa, 63.77 GPa, and 73.17 MPa, respectively. Scanning electron microscopy confirmed markedly improved adhesion between the resin matrix and fibers. This work provides a simple and effective method for the preparation of high-performance CF/PEEK composites, which can improve the performance of composites without degrading the mechanical property of pristine CF.     

聚苯硫醚/氧化锌晶须复合材料的研究

研究了制备聚苯硫醚/氧化锌晶须复合材料的方法，探讨了经表面处理后的氧化锌晶须与聚苯硫醚在熔融剪切状态下的共混工艺条件，并对复合材料的力学性能和电学性能及微观结构进行了表征。结果表明，氧化锌晶须含量、偶联剂的选择及复合材料制备工艺对复合材料的性能有较大影响；由导电型氧化锌晶须制得的聚苯硫醚/氧化锌晶须复合材料可用作高性能抗静电材料。     

炭纤维增强中间相炭微球制备炭/炭复合材料

以中间相炭微球为炭源,沥青基磨切炭纤维为同质增强相,采用冷模压成型和气氛低温烧结制备出高性能炭/炭复合材料。研究了炭纤维表面处理对界面结合强度的作用机制和改善效果,分析了不同球磨时间下原始粉料的微观形貌。结果表明：炭纤维的添加有利于坯体各向均匀收缩,降低了总体积收缩率,使得复合材料密度下降;同时大幅度提升了复合材料的机械强度;添加10%（质量分数）炭纤维时弯曲强度最高,达到123.5MPa。     

Adhesion Improvement of Bio-Based Epoxy in Environmentally Friendly and High-Performance Natural Fiber-Reinforced Composites

Developing robust bio-based epoxy against petroleum-derived epoxy is necessary for environmentally friendly and high-performance natural fiber-reinforced composites. A bio-based vanillin epoxy (VE) is synthesized from the lignin-derived vanillin, and a thermoset resin is prepared after mixing it with a 4,4′-diaminodiphenyl methane (DDM) hardener. Further, it is infused in high-cellulose-containing alkali-treated jute fiber (TJF) mats through a simple approach to enhance the adhesion between the VE-DDM and TJF. Bio-based VE-DDM resin shows better compatibility with TJF than petroleum-derived bisphenol A diglycidyl ether (DGEBA) epoxy. The bio-based VE-DDM/TJF composite demonstrates the T_gis ≈165 °C, tensile strength is ≈83.12 ± 3.80 MPa, and Young's modulus is ≈2.86 ± 0.10 GPa with excellent flexural strength (138.72 ± 3.81 MPa) and flexural modulus (8.01 ± 0.11 GPa). It also shows merits regarding hydrophobicity, reduced water absorption ability, durability, and chemical resistance in an acidic medium. The natural fiber-reinforced VE composites pave the way to produce environmentally friendly and high-performance composites for structural applications.