玻璃纤维织物单位面积质量精细控制方法探讨

对专用玻璃纤维织物单位面积质量精细控制的方法进行了研究,根据织物单位面积质量的范围区间要求,通过合理的数学计算,设计织物所用的玻璃纤维纱线管纱的质量控制范围,再通过定长生产控制,对定长的纱线,按照计算好的质量范围区间,在电子秤上进行称重均化调配,符合质量范围的作为一个组合放置在纱车上用于后道并捻,有效地解决了因为原丝线密度波动带来的织物单位面积质量波动范围大的问题,实现了织物单位面积质量的精细控制,满足了复合材料基材单位面积质量高均匀性要求.     

SMC玻璃纤维质量特性及其生产工艺控制

介绍了SMC玻璃纤维的关键质量特性,主要包含成带性、分散性、集束性、切割性、静电性、浸润性、颜色等,将其与SMC玻璃纤维生产工艺过程相对应,介绍如何控制并提高这些特性,以生产出更高品质的SMC玻璃纤维,满足用户需求。     

一种红外微晶玻璃纤维布及其制备方法

一种红外微晶玻璃纤维布及其制备方法,它由红外微晶玻璃纤维、浆料和纱线组成,其特征是红外微晶玻璃纤维占总重量的质量分数80％-98％,浆料占总重量的质量分数1.0％-2.5％,纱线占总重量的质量分数0-20％。本发明的技术效果是：避免了传统有机聚合物红外纤维和红外交织物由于陶瓷粉含量过高而造成的强度低、韧性差,     

玻璃纤维缝纫线用纱生产简介

我厂为适应玻璃纤维过滤布袋的生产,决定开始生产玻璃纤维缝纫线.其工艺是采用经增强型浸润剂处理的原丝退、并制成合格的纱线,再经纱线处理机做被覆处理而成.本文只介绍玻璃纤维缝纫线用纱的制备生产情况.一、玻璃纤维缝纫线用纱的技术要求1.产品规格及主要物理机械性能     

2004年玻璃纤维质量分析和标准化工作进展

本文简述了我国玻璃纤维工业发展概况,分析了玻璃纤维产品的质量状况,介绍了玻璃纤维标准化工作的进展.     

一种适于玻璃纤维的成膜剂、包含该成膜剂的浸润剂及该浸润剂的制备方法和应用

本发明涉及浸润剂技术领域,公开了一种适于玻璃纤维的成膜剂、包含该成膜剂的浸润剂及该浸润剂的制备方法和应用,所述成膜剂包括乳化的双酚A型环氧树脂和聚酯类聚氨酯,通过表面活性剂的乳化作用,降低了体系的界面能,提高了环氧树脂乳液的稳定性,有利于其发挥更佳性能;聚酯类聚氨酯的成膜剂,其分子量较大,对纱线的包覆性强,易使玻璃纤维表面形成致密膜,将玻璃纤维与外界隔离,有效阻止水分进入玻璃纤维微裂纹,有利于提高纱线的弹性及耐磨性,提升纱线的耐疲劳性能;同时,其具有较高的集束力,可以有效降低纱线自然悬垂及张力不均。     

漏板温度补偿对细纱线密度的影响规律及其设定方法

分析了在玻璃纤维细纱生产中,当拉丝中断并重新恢复时,纱线线密度的波动原因及影响因素。为了减小波动,采用漏板温度补偿方式,介绍了漏板温度补偿的作用机理并根据漏板控制阀位的变化,提出了如何合理设定漏板温度补偿方法,保证纱线线密度的均匀性。     

纤维直径对玻璃纤维直接纱物理性能的影响

研究了不同纤维直径对玻璃纤维直接纱的主要物理性能的影响,并通过光学显微镜对玻璃纤维形貌进行研究。结果表明,纤维直径的大小直接影响到玻璃纤维产品的物理性能,且为关键影响因素,其中与纱线断裂强度、毛羽和膨化率呈负相关性,与纱线耐热性和纱线在树脂中的浸透速度呈正相关性。     

高平整度玻璃纤维覆膜滤料基布的生产技术探讨

介绍了高平整度玻璃纤维覆膜滤料基布的生产技术,研究了捻线工艺、整经工艺和织造工艺对玻璃纤维覆膜滤料基布平整度和力学性能的影响.得出结论:选用积极退解大卷装捻线机、一次整经机和刚性剑杆织机组成的生产线能满足高平整度玻璃纤维覆膜滤料基布的质量要求.     

风机叶片用±45°双轴向玻璃纤维经编织物性能研究

选用不同的织物结构设计和不同的纱线材质,制备了3种不同的±45°双轴向玻璃纤维经编织物,研究了0°和90°的添加和纱线材质对织物的树脂渗透率和纤维增强树脂基复合材料的力学性能的影响。研究结果表明:0°和90°纱线的添加对±45°双轴向玻璃纤维经编织物的树脂浸透率和0°方向的拉伸强度、模量起到积极的作用,但是对±45°方向和0°、90°方向的面内剪切性能产生的一定的减弱效应。从不同材质的0°和90°纱线角度出发,混杂纱线较玻璃纤维纱线对树脂浸透率的提升效果更佳,但面内剪切性能较玻璃纤维纱线稍差。为开发具备快速浸透和性能优异的±45°双轴向玻璃纤维经编织物提供了一定的思路,在风电叶片行业中具有广泛的工程应用价值。     

Hybrid carbon-glass fiber vinyl ester resin composites

Hybrid carbon-glass fiber composites of novolak epoxy-based vinyl ester resins have been investigated. The chemical resistance, the thermo-oxidative stability and the mechanical properties such as tensile strength and tensile modulus, as well as flexural strength and flexural modulus, interlaminar shear strength (ILSS) and impact strength have also been estimated. The combination of glass and carbon fibers in the hybrid turns out to be an excellent mix. These composites have good tensile and flexural properties as well as the good chemical resistance of the carbon fibers and the high impact strength of the glass fibers and also the thermo-oxidative stability of highly aromatic vinyl ester resins based on novolak epoxy.     

浅谈高强玻璃纤维的发展和应用

介绍了高强玻璃纤维和普通无碱玻璃纤维相比具有的拉伸强度高、弹性模量高、抗冲击性能好、化学稳定性好、耐高温、抗疲劳性好等优良特征,高强玻璃纤维在国内外发展的情况,高强玻璃纤维及其制品纱及织物的主要技术性能,它在航空航天、国防工业、一般工业、体育休闲器材等高性能的增强材料方面的广泛应用。     

四种烧蚀复合材料用纤维的对比

对比了T–700碳纤维(T–700 CF),高硅氧玻璃纤维(HSGF),S–2高强玻璃纤维(S–2高强GF),连续玄武岩纤维(CBF)4种纤维的密度和拉伸性能,并采用扫描电子显微镜、X射线荧光光谱,差示扫描量热及热重等测试技术对这4种纤维的表面形貌、化学组成、比热容及热稳定性进行了表征和对比。结果表明,T–700 CF,HSGF,S–2高强GF和CBF 4种纤维的密度由小到大的顺序为T–700 CFHSGFS–2高强GFCBF,拉伸强度由小到大的顺序为HSGFS–2高强GFCBFT–700 CF,T–700 CF的拉伸弹性模量最高,而S–2高强GF的断裂伸长率最高。T–700 CF的直径最小,CBF的表面最粗糙。在相同温度下,200℃以前T–700 CF和CBF的比热容基本一致,200℃以后4种纤维的比热容由小到大的顺序为S–2高强GFHSGFCBFT–700 CF。在相同温度下,4种纤维的失重率由小到大的顺序为CBFS–2高强GFHSGFT–700 CF。     

建筑用玻璃纤维网布性能的研究

从对无碱、中碱和耐碱玻璃基本性能的试验研究出发,阐述了玻璃成分对玻璃纤维力学性能、化学稳定性和脆性的影响。结合建筑外墙外保温工程的要求,对中碱和耐碱玻璃纤维网布拉伸断裂强度、耐碱性、断裂伸长率和涂覆量进行了试验研究。通过对试验结果的分析,提出了无碱和中碱玻璃纤维网布的拉伸强度大于耐碱玻璃纤维网布约30%左右;经涂覆处理的中碱玻璃纤维网布用于聚合物基的外墙外保温系统是可靠的;耐碱玻璃纤维由于本身具有一定的耐碱性,再经过涂覆处理,增加了表面保护层,耐强碱的能力优于中碱玻璃纤维网布的观点。     

Use of wood fibers in thermoplastic composites: VI. Isocyanate as a bonding agent for polyethylene–wood fiber composites

Linear low density (LLDPE) and high density (HDPE) polyethylenes were reinforced with wood fibers of aspen chemithermomechanical (CTMP) pulp. The different isocyantes: (i) polymethylene (polyphenyl isocyanate), (ii) tolene –2–4-diisocyanate, (iii) 1–6 hexamethylene-diisocyanate, and (iv) ethyl isocyanate used as bonding agents improved the tensile properties of the composites. HDPE performed better in comparison with LLDPE composites. Also, shorter fibers (mesh size 60) produced higher tensile strength and modulus in HDPE. The comparison of HDPE reinforced with aspen, mica, and glass fibers showed the effectiveness of wood fibers in terms of their cost and performance.     

Characterization of Short Glass Fiber–Reinforced Castor Oil–Based Polyurethane Polystyrene Interpenetrating Networks

ABSTRACT

Chopped strand glass fiber–reinforced particle-filled castor oil–based polyurethane polystyrene composites with varying weight fractions of glass fibers were investigated for morphology, tensile strength, and absorption of various chemicals. The short glass fiber fraction was varied from 1% to 16% (by wt.) of the total composite system. The tensile strength of these composites was much higher than that of unfilled IPNs for the same concentration of polystyrene. The tensile strength of the IPN composites increases with the increase in fiber content up to a fiber percentage of 9%. After that, there is a sharp decline in tensile modulus as well as elongation at break. The chemical absorption showed an increase with increasing glass fiber content.     

The Effect of Environmental Treatments on Fiber Surface Properties and Tensile Strength of Sugar Palm Fiber-Reinforced Epoxy Composites

Fiber glass has been used widely in manufacturing industries, especially marine industries, because of low cost and high strength. However, glass fiber can cause acute irritation to the skin, eyes, and upper respiratory tract. This study looked at the possibility of substituting glass fiber with natural fiber in composite materials. The surface properties of sugar palm fiber (Arenga pinnata) were modified using seawater and freshwater as treatment substances. This led to biological, chemical, and water degradation of the sugar palm fiber. Morphological and structural changes in the fibers were investigated using a scanning electron microscope (SEM). A series of tensile tests based on ASTM D638-99 was carried out on epoxy composites with 15% sugar palm fiber by volume. It was found that seawater and freshwater treatments improved the surface properties of the sugar palm fiber and thus resulted in better adhesion quality as compared to untreated fiber. An improvement in tensile strength also supported this finding. Treatment with seawater for 30 days proved to be the best, with 67.26% increase in tensile strength.     

重碱品质对配合料质量的影响

通过对不同品质的重碱成分、粒度、微观形态的比较和分析,确定重碱品质对配合料均匀性及对玻璃质量的影响.     

Synthetic fibers and thermoplastic short‐fiber‐reinforced polymers: Properties and characterization

Among the synthetic fibers, glass fibers (GF) are most widely used in thermoplastic short‐fiber‐reinforced polymers (SFRP), as they offer good strength and stiffness, impact resistance, chemical resistance, and thermal stability at a low price. Carbon fibers (CF) are applied instead of GF, when highest stiffness is required. Other types of synthetic fibers like aramid (AF), basalt (BF), polyacrylonitrile (PAN‐F), polyethylene terephthalate (PET‐F), or polypropylene fibers (PP‐F) are rarely used in SFRP, although they offer some advantages compared with GF. The aim of this article is, to give an overview of various fiber types with regard to their mechanical properties, densities, and prices as well as the performance of their thermoplastic composites. The mechanical properties are presented as Ashby plots of tensile strength versus tensile modulus, both in absolute and specific (absolute value divided by density) values. This overview also focuses on modification of fiber/matrix interaction, as interfacial adhesion has a huge impact on composite performance. A summary of established methods for characterization of fibers, polymers, and composites completes this article. POLYM. COMPOS., 35:227–236, 2014. © 2013 Society of Plastics Engineers     

Polymerization compounding composites of nylon‐6,6/short glass fiber

Nylon‐6,6 was grafted onto the surface of short glass fibers through the sequential reaction of adipoyl chloride and hexamethylenediamine onto the fiber surface. Grafted and unsized short glass fibers (USGF) were used to prepare composites with nylon‐6,6 via melt blending. The glass fibers were found to act as nucleating agents for the nylon‐6,6 matrix. Grafted glass fiber composites have higher crystallization temperatures than USGF composites, indicating that grafted nylon‐6,6 molecules further increase crystallization rate of composites. Grafted glass fiber composites were also found to have higher tensile strength, tensile modulus, dynamic storage modulus, and melt viscosity than USGF composites. Property enhancement is attributed to improved wetting and interactions between the nylon‐6,6 matrix and the modified surface of glass fibers, which is supported by scanning electron microscopy (SEM) analysis. The glass transition (tan δ) temperatures extracted from dynamic mechanical analysis (DMA) are found to be unchanged for USGF, while in the case of grafted glass fiber, tan δ increases with increasing glass fiber contents. Moreover, the peak values (i.e., intensity) of tan δ are slightly lower for grafted glass fiber composites than for USGF composites, further indicating improved interactions between the grafted glass fibers and nylon‐6,6 matrix. The Halpin‐Tsai and modified Kelly‐Tyson models were used to predict the tensile modulus and tensile strength, respectively.