玻璃纤维增强热塑性塑料在航空航天领域中的应用

研究了玻璃纤维增强热塑性塑料（GRTP）的分类,短玻纤增强热塑性塑料（SFT）,玻纤毡增强热塑性塑料（GMT）,长纤维增强热塑性塑料（LFT）3种类型的特性和制备方法。介绍GRTP在军用飞机和民用飞机等航空航天领域的应用情况。总结了未来纤维增强热塑性复合材料的发展方向。     

关于新型玻纤增强基材及应用的讨论

玻璃纤维作为增强基材,是当今纤维增强塑料（FRP）的主导材料。FRP制品有很强的结构性,材料性质和结构与制品工艺有十分密切的关系。介绍了颇具发展潜力的5种玻纤增强基材即玻纤薄毡、增强热塑性塑料用玻纤、玻纤经编织物、玻纤预浸渍产品和玻纤预成型体的发展概况,意在和玻纤复材制品行业交流,促进上下产业链的共同发展。     

走江苏特色的玻纤发展之路

介绍了目前江苏省玻璃纤维与玻璃钢的发展状况和形势、产业结构、在全国领先的特纤、电子布、增强基材、产业织物等产品、玻纤树脂复合材料、SMC/BMC模塑料、风力发电用FRP叶片和机罩、覆铜板、玻纤增强热塑性复合材料、FRP制品等情况。分析江苏省各项产业优点与不足,指明今后玻璃纤维发展方向。     

热塑性复合材料研究及其在航空领域中的应用

本文介绍了热塑性复合材料的分类与组成,并简述了短纤维粒料(SFT)、长纤维粒料(LFT)、玻璃纤维毡增强热塑性片材(GMT)、织物预浸料和单向连续纤维增强热塑预浸料(CFRTP)的各自优点,连续纤维增强热塑性树脂的预浸料的主流制备工艺。结合高性能热塑性复合材料在国外航空领域中的应用,展望了其在我国的发展方向。     

高性能玻璃纤维增强材料

本文简要评述了国内外高性能玻纤增强材料如高强度、高模量、高硅氧、抗辐照、抗碱、空心玻璃纤维等的研究进展与现状；同时评述了高新玻纤制品的现状及其应用，如连续原丝毡、针织缝编毡、３Ｄ织物、复铜板薄毡、膨体纱系列产品、增强热塑性塑料玻纤基材等。     

美国推出长波纤增强塑料用高性能玻纤粗纱

美国南卡罗来纳州Aiken的高强玻璃纤维和玻纤粗纱生产厂AGY公司推出长玻纤增强热塑性塑料（LFT）用高性能玻纤粗纱新产品S—1 Glass（S-1玻纤）。S-1 Glass也可切断为短纤维．用于一般玻纤填充增强聚合物。     

我国玻纤增强基材的发展

连续玻璃纤维主要用作塑料增强基材,本文讨论涉及到的增强基材范围包括:各种增强热固性塑料和增强热塑性塑料以及增强电子电器用层压绝缘材料的玻璃纤维基材,不包括玻纤制品直接或经涂覆而使用的基材。 1 数量有大幅增长近20年我国玻璃纤维工业有了大的发展,作为主体产品的玻纤增强基材的发展则更快一些,目前我国已成为世界玻纤第2大生产国,行业产业结构也趋于国际化并具有自己特色。从我国玻纤增长情况(见表1)可实在地     

热塑性复合材料研究进展

综述热塑性复合材料的优点、国内外热塑性复合材料的概况、国内玻纤增强聚丙烯(PP)、增强尼龙(PA)、玻纤增强聚对苯二甲酸丁二酯(PBT)等热塑性复合材料研究情况、热塑性复合材料在汽车工业、航空航天、军事领域等的应用情况,并预测了应用前景。     

玻璃纤维增强热塑性塑料——短纤维粒料和长纤维粒料

介绍了玻璃纤维复合材料及玻璃纤维增强热塑性塑料的发展,玻璃纤维增强热塑性塑料基材性能、纤维增强材料性能、界面状态、模具结构及注塑工艺等性能影响因素,短纤维粒料、长纤维粒料主要生产方法及特点.分析了短纤维粒料与长纤维粒料结构和性能,与长纤维粒料生产技术关键,概述了玻纤预热及特殊切粒机.     

长玻纤增强热塑性塑料的市场应用前景

本文介绍了长玻纤增强热塑性复合材料国内外的发展现状,长玻纤增强热塑性复合材料国外典型牌号以及在汽车领域的应用及市场前景。     

A simple method for the measurement of compaction and corresponding transverse permeability of composite prepregs

Process simulation is of great importance in the development of processes for cost‐effective fabrication of composite structures, particularly for thermoset matrix composites. For the simulation of autoclave or hot press process, it requires knowledge of the compaction behavior and the saturated transverse permeability of fiber reinforcements. In this paper, a simple method without any sophisticated equipment is shown, which can simultaneously measure the compaction curve and the saturated transverse permeability as a function of fiber volume fraction. The method was used to measure the properties of S‐2 glass rovings and T700S carbon rovings prepregs. The effects of the impregnating fluid variety, the initial fiber volume fraction of prepreg, and the lay‐up type on the compaction behavior were investigated. The transverse permeability was also studied as a function of fiber content for various lay‐up types. The results indicate that Gutowski's compaction model and the modified Kozeny‐Carman equation proposed by Gutowski, which are important input parameters for the resin flow model, can be used to adequately fit the experimental data. POLYM. COMPOS. 28:61–70, 2007. © 2007 Society of Plastics Engineers     

玻璃纤维增强热塑性塑料的发展概况

根据玻璃纤维增强热塑性塑料的发展过程分别介绍了短纤维增强热塑性塑料、玻璃纤维毡增强热塑性塑料、玻璃纤维/热塑性塑料复合纤维、长纤维增强热塑性塑料和热塑性拉挤产品的制造方法、特性和应用。     

Continuous glass-fiber reinforced nylon 6 by using a new impregnation die

This paper describes a process for the manufacture of thermoplastic composites reinforced with continuous fibers and the equipment for producing such a product. The process makes it possible to expand and reconsolidate the fibers of rovings by passing them into the impregnation die filled with molten thermoplastic. The die consists of three rollers and numerous pins fixed on the roller surfaces over which the roving is drawn under tension. The material chosen to illustrate the die process is a glass-fiber reinforced nylon-6, PA6. The void content and mechanical properties were measured to investigate the influence of processing variables on properties. These process experiences indicated that poor fiber resin impregnation and fiber damage, due to harsh prepreg fabrication, result in low values for longitudinal tensile strength and impact properties. However, the composites manufactured by this technique show a significant improvement in mechanical properties over conventionally prepared thermoplastic composites.     

高性能玻纤多轴向织物在兆瓦级风电叶片中的应用

为提高风能资源利用效率,降低风力发电成本,在传统E玻纤多轴向织物的基础上,玻纤增强材料供应商泰山玻纤开发了新型高性能玻纤及其多轴向织物。本文主要探讨兆瓦级风电叶片对玻纤增强材料的选择。     

Mechanical properties of phenolic composites reinforced with jute/cotton hybrid fabrics

Mechanical properties (tensile, flexural, impact, and dynamic mechanical thermal analysis) of novolac type phenolic composites reinforced with jute/cotton hybrid woven fabrics were investigated as a function of fiber orientation and roving/fabric characteristics. Scanning electron microscopy (SEM) was carried out to investigate the fiber‐matrix adhesion. Results showed that the composite properties are strongly influenced by test direction and rovings/fabric characteristics. The anisotropy degree was shown to increase with test angle and to strongly depend on the type/architecture of fabric used, i.e., jute rovings diameter, relative fiber content, etc. It was possible to obtain composites with higher mechanical properties and lower anisotropy degree by producing cross‐ply laminates. Best overall mechanical properties were obtained for the composites tested along the jute rovings direction. Composites tested at 45° and 90° with respect to the jute roving direction exhibited a controlled brittle failure combined with a successive fiber pullout, while those tested in the longitudinal direction (0°) exhibited a catastrophic failure mode. Our results indicate that jute promotes a higher reinforcing effect and cotton avoids catastrophic failure. Therefore, this combination of natural fibers is suitable to product composites for lightweight structural applications. POLYM. COMPOS., 26:1–11, 2005. © 2004 Society of Plastics Engineers.     

我国复合材料工业的发展概况

回顾了我国复合材料发展历史。通过列举玻璃纤维、ACM用特种纤维等增强材料和不饱和聚酯树脂、环氧树脂、酚醛树脂等基体材料以及复合材料机械化成型进展情况,纤维缠绕管道与贮罐、压力容器、SMC／BMC、拉挤型材等技术产品开发情况,介绍了我国复合材料的发展。     

Moisture uptake and resulting mechanical response of bio‐based composites. II. composites

The durability of entirely bio‐based composites with respect to the exposure to elevated humidity was evaluated. Different combinations of bio‐based resins (Tribest, EpoBioX, Envirez) and cellulosic fibers (flax and regenerated cellulose fiber rovings and fabrics) were used to manufacture unidirectional and cross‐ply composite laminates. Water absorption experiments were performed at various humidity levels (41%, 70%, and 98%) to measure apparent diffusion coefficient and moisture content at saturation. Effect of chemical treatment (alkali and silane) of fibers as protection against moisture was also studied. However, fiber treatment did not show any significant improvement and in some cases the performance of the composites with treated fibers was lower than those with untreated reinforcement. The comparison of results for neat resins and composites showed that moisture uptake in the studied composites is primarily due to cellulosic reinforcement. Tensile properties of composites as received (RH = 24%) and conditioned (RH = 41%, 70%, and 98%) were measured in order to estimate the influence of humidity on behavior of these materials. Results were compared with data for glass fiber reinforced composite, as a reference material. Previous results from study of unreinforced polymers showed that resins were resistant to moisture uptake. Knowing that moisture sorption is primarily dominated by natural fibers, the results showed that some of the composites with bio‐based resins performed very well and have comparable properties with composites of synthetic epoxy, even at elevated humidity. POLYM. COMPOS., 36:1510–1519, 2015. © 2014 Society of Plastics Engineers     

Thermoplastic vs. thermosetting structural composites

High performance composites are normally fabricated from continuous fiber and fabric reinforcements embedded in a thermosetting resin. Currently, thermoplastics are receiving considerable attention as matrix materials in structural composites. These thermoplastic composites can be fabricated by novel techniques which are less cumbersome and potentially faster than curing in an autoclave. In this paper, fabrication techniques and physical properties of thermosetting composites will be compared. Applications where thermoplastic composites are particularly well suited will be presented.