工程塑料增强改性用玻璃纤维及其发展动向？

介绍了玻璃纤维增强改性工程塑料的发展概况;讨论了玻璃纤维表面处理剂、玻璃纤维在树脂中的分散性和长径保留比、玻璃纤维含量等对玻璃纤维增强改性工程塑料的影响,以及双螺杆挤塑用长玻璃纤维、短切玻璃纤维、LFT用长玻璃纤维的特性。指出了工程塑料增强改性用玻璃纤维的选用原则及方法。双螺杆挤塑用短切玻璃纤维和LFT用长玻璃纤维具有良好的市场前景。     

高强度,高弹性玻璃纤维——日东纺“T玻璃”

1.概述玻璃纤维作为热固性树脂及热塑性树脂的增强用纤维,从开始使用至今已有50年以上历史.特别在最近,开发出能耐碱性的玻璃纤维,其用途逐渐推广到电气、电子材料、汽车、建筑材料、体育用品等多方面.现在市售的增强用玻璃纤维种类及其组分见表1.表1 玻璃纤维的组分     

玻璃纤维浸润剂的分析与表征技术进展

玻璃纤维增强树脂材料是应用最为广泛的工程复合材料。自20世纪末以来，玻璃纤维与基体树脂之间的界面结合越来越被关注，浸润剂是玻璃纤维表面处理的功能性复合涂层，是玻璃纤维生产与使用顺畅性的重要保障，也是构建玻璃纤维与树脂界面结合的重要“化学桥梁”。然而浸润剂配方具有高度保密性，行业内也缺乏系统可靠的浸润剂技术数据库，限制了人们对浸润剂知识及其作用的理解。通过对已经公开发表的相关文献进行广泛对比分析，本文对玻璃纤维浸润剂目前的表征与分析方法进行综述。首先对浸润剂的基础知识进行了简单概括，随后介绍了浸润剂的典型表征与分析技术，最后对浸润剂表征技术的发展现状、行业难点进行总结与展望，从而帮助复合材料行业的研发与生产人员更好地理解玻璃纤维浸润剂在增强复合材料中的作用。     

GFRP填料塔的设计

以双酚A型不饱和聚酯，胶衣树脂为基体树脂，玻璃纤维表面毡，玻璃布，短玻璃纤维毡为增强材料，制备了玻璃纤维增强塑料（GFRP）填料塔。论述了基体树脂，增强材料的选择，GFRP塔的结构设计，强计计算和手糊成型，组装的工艺要求。应用结果表明，该GFRP填料完全可满足硫酸生产净化工艺的使用要求。     

沙伯推出高流动性树脂

沙伯基础创新塑料宣布，他们提供的玻璃纤维填充型超高流动性Valox SHF树脂，其流动性是传统玻璃纤维填充型PBT树脂的两倍，可以帮助电气与汽车零件制造商随心所欲地进行设计。     

高强度SMC模塑料的研制

本文主要介绍了电气用高强度SMC的研制，通过选用高强度树脂，适当的填料及玻璃纤维，在保证电气性能不变的前提下，提高其机械性能。     

玻璃纤维及复合材料耐酸性能研究

针对两种不同的玻璃纤维进行了耐酸性能研究,并对两种不同的玻璃纤维制备的复合材料的耐酸性能进行了试验。研究结果表明：LB玻璃纤维的耐酸侵蚀性能大大提高,同条件下的酸侵蚀失重仅为普通无碱玻璃纤维的1/10。对耐酸玻璃纤维增强树脂材料的酸侵蚀性能研究表明,使用耐酸玻璃纤维增强的玻璃钢复合材料的耐侵蚀性能大大提高,其在酸性环境下的使用寿命可以明显延长。     

玻璃纤维夹砂树脂涵管

玻璃纤维夹砂树脂涵管，其管壁结构为交替的树脂玻纤布缠绕层和树脂夹砂层，涵管一端具有外锥段，该外锥段的表面具有密封圈嵌槽，涵管的另一端具有与所述外锥段相对。     

砂轮网片生产与存在问题诌议

前言玻璃纤维增强树脂砂轮网片是以玻璃纤维网格布为基材,经浸渍树脂、烘干、切裁后,用于高速切割树脂砂轮(PB)和高速磨削树脂砂轮(JB)的增强,以提高砂轮的回转速度和抗冲击强度.在玻璃纤维网布的规格确定之后,浸渍树脂的性能及浸渍工艺对网片起主要的作用.以前国内通用的浸渍树脂是热固性酚醛,基本适用于砂轮手工生产冷压成型的工艺,但存在着包装后网片之间相互粘联,存放期短,以及制成砂轮抗冲     

树脂切割砂轮

本实用新型涉及切割砂轮,尤其是整体成型固化、用于切割金属材料的树脂切割砂轮。本实用新型呈圆盘形,中心开孔,由磨料、有机树脂、玻璃纤维网布和短玻璃纤维丝构成,磨料和短玻璃纤维丝都均匀分布于有机树脂内,玻璃纤维网布平行于两端面沿轴向均匀分布于有机树脂内,磨料露出两个端面之上;有机树脂选用酚醛树脂,     

Effects of glass fibers and polypropylene/glass fiber hybrid fibers on the kinetics and mechanical properties of epoxy composites

Curing reactions of diglycidyl ether of bisphenol F (DGEBP‐F) and pre‐catalyzed methyltetrahydrophthalic anhydride (MTHPA) with benzyl triethyl ammonium chloride (BTEAC) were studied and effects of glass fibers evaluated. The influence on the kinetics of glass fibers and a hybrid blend of maleated polypropylene + glass fibers is studied. Isothermal and dynamic kinetic parameters are determined by differential scanning calorimetry (DSC). Applicability of the autocatalytic model is investigated. The model serves well in the range of degrees of conversion between 25 and 80%. At high conversion rates the diffusion control becomes apparent. Glass fibers accelerate the curing, shortening the time needed to reach the maximum reaction rate; this is reflected in lower activation energies for curing in comparison to the neat resin. The effects observed can be explained by a reaction between the amine group present on the fiber surfaces and the epoxy glycidyl groups. The result of both isothermal and non‐isothermal curing of resin + glass fibers commingled with polypropylene are close to those for the neat resin. The reinforcement increases the elastic modulus 12 times, the tensile strength 2 times, and the impact strength 285 times. The glass fibers + commingled polypropylene reinforcement provides comparable mechanical properties as glass fibers alone when normalized with respected to the density fraction of the fibers.     

车用玻璃纤维增强塑料及其应用

玻璃纤维增强塑料是由玻璃纤维毡、玻璃纤维物与合成树脂(如聚酯树脂、环氧树脂等)复合而成的新型材料。介绍了其功能、种类、成分和性能特点;在交通、车辆制造等方面的应用;并指出了玻璃纤维增强塑料行业的发展动态及趋势。     

Matrix–size interactions in epoxy–glass fibers composites in relation to mechanical relaxations and effects of thermal aging

A study was carried out to examine the effect of removing the size from the surface of glass fibers in order to determine its role with respect to thermoxidative aging. Dynamic mechanical relaxation data have revealed that mechanical losses were always greater than the calculated upper bound values. The effects of removing the size from the surface glass fibers for epoxy matrix composites were found to be completely different when a fluoroligomer was used to modify the resin. Contrary to the case of the conventional epoxy resin, the characteristics of the composites containing fluoroligomer-modified resin were found to be insensitive to the removal of the size from the glass fibers surface. The presence of the size on the surface of the fibers provides an interlayer that degrades through the formation of more lightly crosslinked products than the matrix, thereby providing a large increase in dynamic mechanical losses after thermal aging. © 1995 John Wiley & Sons, Inc.     

玻璃纤维增强酚醛摩阻材料

针对玻璃纤维增强酚醛摩阻材料存在的问题，研究分析了不同类型玻纤维增强酚醛树脂、玻纤增强橡胶改性酚醛树脂、下纤增强三聚氰胺腰果壳油改性酚醛树以及混杂纤维增强酚醛树脂摩阻材料的性能，并对摩阻复合材料的发展提出建议。     

A Novel Route to Modify the Interface of Glass Fiber-Reinforced Epoxy Resin Composite via Bacterial Cellulose

A simple and novel method to modify the surface of glass material with Acetobacter xylinum bacteria to deposit bacterial cellulose (BC) around glass material during the process of fermentation was described. The modified glass material with more hydrophobic and rougher surface was characterized by FTIR, SEM, XPS, peeling experiments, and water/air contact angle. It was found that heat treatment at 140 ～ 150°C was able to improve the interaction between BC and glass material owing to the increase in chemical bonds between them. The biological modified glass fibers were compounded with epoxy resin. The influence of incubation time and high temperature on the interfacial shear strength (IFSS) between glass fibers and epoxy resin was identified by Microbond Test. The strongest IFSS could be obtained with incubation time of 1 hour and temperature of 140°C, which then offers a biological approach to improve the interface of silicates materials and resin matrix.     

几种大型风力发电叶片用环氧树脂复合材料的对比分析

将风电叶片用真空灌注型环氧树脂体系MERICAN 3311A/B与同类两款产品进行了对比分析,研究了三种树脂体系对玻纤的浸润性;采用真空导入成型技术制备了复合材料板,并对复合材料的力学性能进行了研究。结果表明,MERICAN3311A/B粘度低、浸润性良好、FRP力学性能高,与纤维的匹配性良好,达到甚至某些方面已超越国内外同类进口产品的水平,能够满足风电叶片对树脂的性能要求。     

电子玻纤布生产过程中的开纤

对电子玻纤布开纤后能提高其与树脂的浸透性、PCB的耐热性、PCB的可靠性进行分析；总结了在电子玻纤布的生产过程中，如何进行电子玻纤布开纤的方法。     

新型炭黑填充抗静电和导电聚丙烯复合材料

以炭黑为导电填料,在聚丙烯中加入适量的环氧树脂和玻璃纤维,制备了新型的抗静电和导电聚丙烯复合材料。测定了不同复合体系的渗滤阈值,用扫描电镜(SEM)对相形貌进行了观察,并研究了环氧树脂和玻璃纤维用量对体积电阻率的影响。SEM照片表明在新型复合材料中,炭黑优先分布在环氧树脂中,环氧树脂包覆在玻璃纤维表面,通过玻璃纤维间的搭接形成导电通路。这种独特的结构使该复合材料的渗滤阈值低于聚丙烯/炭黑和聚丙烯/环氧树脂/炭黑复合体系的渗滤阈值。玻璃纤维和环氧树脂含量分别需要达到约10%,复合材料才能具有抗静电和导电作用。     

Evaluation of surface treatments for glass fibers in composite materials

The thermomechanical stability of a number of organosilane surface treatments for glass fibers was evaluated for use in a fiber reinforced epoxy resin. All of the silane coatings were found to improve the tensile strength of E-glass filaments, particularly at large gauge lengths. A phenylamino silane and an amino silane were particularly effective in this regard. The fiber/matrix interface was evaluated as a function of temperature and after exposure to boiling water using a single-fiber composite test. All silane coatings transmitted a higher interfacial shear stress than obtained in composites with no coatings, and in all cases the shear stress transmission was considerably higher than would be expected from the yield properties of the resin. Measurements of the glass transition temperature of the epoxy resin, as well as Fourier-Transform Infra-Red analysis, indicated modification of resin properties in a zone around the glass fibers. Each of the silane coatings provided more stable thermomechanical properties than those obtained with uncoated glass, at least until the silanes were irreversibly degraded by boiling water. A phenylamino silane provided the most thermally stable properties. Finally, unidirectional E-glass fiber reinforced laminae were fabricated and the measured values of longitudinal strength were compared favorably to theoretical predictions.