未来国内玻璃丝网印刷行业将会再次腾飞

玻璃丝网印刷行业是夹缝产业,和终端消费品相比,玻璃丝网印刷产品的利润丰厚,进入门槛儿低,积累快。伴随着经济的发展,我国玻璃丝网印刷行业进入了日新月异的发展期,玻璃丝网印刷行业几乎覆盖了所有在国内飞速发展的行业。     

玻璃丝形状尺寸对玻璃软化点温度测量影响研究

通过机械拉丝工艺法制备不同直径(Φ0.50~Φ0.90 mm)、不同圆柱度(ΔΦ0.01~ΔΦ0.06mm)和不同圆度(ΔΦ0.01~ΔΦ0.2 mm)3种形态的玻璃丝,采用Littleton法测试玻璃软化点温度,探究玻璃丝直径、圆柱度和圆度对软化点测量结果的影响作用规律。研究结果表明:随着玻璃丝直径增大,测试的玻璃软化点温度逐渐降低;对于不同圆柱度的玻璃丝,上下两端直径差ΔФ增大,软化点温度变化量增大;对于不同圆度的玻璃丝,其软化点温度取决于玻璃丝断面最小直径,最小直径一定时,随着最大直径增大,软化点温度变化不大。     

工业埋地管道环氧煤沥青玻璃丝布防腐工程施工经验谈

从环氧煤沥青玻璃丝布施工方法及材料入手,分析了在防腐施工中应注意的问题,强调了过程控制的重要性。     

玻璃丝负载TiO2光催化剂回收金属银和铜

本文以玻璃丝为载体，用溶胶-凝胶法和粉末法制得玻璃丝负载TiO2光催化剂，并用来光催化还原回收水溶液中的金属银和铜。研究了光照时问以及溶液酸碱度对反应性能的影响，探讨了光催化反应机理。     

耐酸耐碱轻型输送带

正一种耐酸耐碱轻型输送带。其中间层为无碱玻璃丝,无碱玻璃丝两侧为芳纶层,芳纶层外为环氧树脂材料组成的覆盖胶层,芳纶层外的两侧覆盖胶层内设有尼龙聚酯网眼布组成的缓冲层。耐酸耐碱轻型输送带的表层耐酸耐碱,内部含有     

滚筒法拉丝原理的分析

滚筒法拉丝是当前生产玻璃纤维薄毡和毛纱的工艺方法之一。它的过程基本如下:在图1中,漏咀流出的玻璃液在其出口处形成液珠(或玻璃棒的下端被加热熔化形成液珠),液珠的自重使其垂直落下。此时液珠的尾端带出一根细的玻璃丝。液珠触及Ⅰ~#挡板后,则沿此挡板的斜面住下运动,而玻璃丝则向滚筒表面靠近,玻璃丝趋近至一定的距离时,由于滚筒旋转造成的负压而吸附在滚筒表面,玻璃液珠则被除渣辊打脱或被Ⅱ~#挡板的进口所折断落入地坑。玻璃丝随滚筒运动,通过挡板而到达刮刀处。由于Ⅱ~#挡板出口逐渐收缩,气流速度增加和渐趋均匀,纤维贴附滚筒的力量减弱,且气流受刮     

聚四氟乙烯分散液的应用及发展方向

介绍了分散液生产玻璃丝布的设备、工艺及其发展方向。     

关于电感应炉的制做和改进

我厂于一九七八年学习河北内丘县化肥厂的经验,并根据《小氮肥》上介绍的资料制造了电感应炉进行变换触媒升温。当时线圈的绕制是采用逐层缠绕法。如下图:即第一层绕满整个线圈全长后,包几层玻璃丝布做层间绝缘再绕第二层,直至绕够应绕的匝数。这个电感应炉在升温过程中多次发生绝缘击穿现象。究其原因,我们认为是线圈层间电压太高,以及高温下玻璃丝布绝缘性能下降所致。     

酸化槽和废酸贮槽耐酸衬里的施工工艺

我厂乳化液站的酸化槽为深6.6米、直径6.6米的砼结构槽,其内侧与槽底的面积为172米~2;废酸贮槽为深3.56米、直径2.6米的砼结构槽,其内侧与槽底面积为34米~2。根据两槽内含酸浓度的大小,要求酸化槽贴两层玻璃丝布,废酸贮槽贴三层玻璃丝布。在油漆师傅的密切配合下,经过查资料和施工前的操作试验,找到了贴玻璃丝布用胶的合适配比。施工中由于采用了“刷浆贴布法”,减少了砼拆模后的面层找平工序,因而大大地缩短了工期,节约了材料,降低了造价。现简介如下: 一、采用的材料及性能要求环氧树脂:环氧树脂为主要胶粘材料,一般采用E-44。三乙烯四胺:固化剂,每次掺入环氧树     

手拉废丝制片剂瓶取得成效

手拉废玻璃丝的处理是玻纤企业的老大难问题。目前国内已有不少解决办法如:重新制球或拉丝,吹制玻璃棉,制压廷玻璃、沥清砖,拉玻璃棒,磨玻璃粉等,这些方法都因地制宜地波采用,收到了效果。杭州半山金星玻璃厂是一个队办企业,厂房紧挨着杭州玻璃厂。他们用杭州玻璃厂的手拉废玻璃丝做原料,生产黄料片剂瓶获得成功,这种瓶子已由医药公司包销。手拉废丝制瓶的方法概述如下:     

XPS analysis of the coverage and composition of coatings on glass fibres

For a fundamental approach to glass fibres for composite applications, it is essential to develop efficient methods to analyse the composition and distribution of the sizing layer on the glass filaments. We have been investigating the use of X-ray photoelectron spectroscopy (XPS) as a tool for the rapid characterization of the sizing and interphase in glass fibre reinforcements. In this report we present and discuss a model, based on a patchy sizing overlayer hypothesis, to assist the data reduction of XPS spectra from glass fibres coated with organic sizings. We show how plots of atomic ratios can be used to estimate the surface coverage of the sizing on glass fibres and to obtain information on the stoichiometry of the sizing. The results generated using this model are in good agreement with previously published data. Using this model, we show that XPS results combined with the weight fraction of the sizing give a quantitative value for the coverage of the fibre surface by the sizing.     

刚性光纤元件芯皮玻璃的酸溶性

五个系统玻璃试样置于不同酸溶液中浸泡不同时间,然后测量其浸泡前后厚度、重量及分光光谱透过率。结果表明:玻璃的酸溶性与时间、温度和酸浓度以及玻璃的组成有关;碱硼硅酸盐和铅硅酸盐玻璃在酸或碱溶液中浸泡后几乎无变化,适于作微通道板和凹陷面板皮玻璃;镧硼硅酸盐、镧钡硼硅酸盐和镧钡硼酸盐玻璃在酸溶液中有不同程度的重量损失。只要选用合适的酸溶液配方,就能设计出相应的微通道板和凹陷面板芯玻璃。     

Degradation action of water on S-glass

Glass fiber reinforced composites have been used to an increasing extent as structural components because of their high strength at relatively low densities. They are more resistant to moisture and weathering than most other structural materials. However, under environments of high humidity and temperature, glass fiber composites with an epoxy or polyester matrix lose a considerable fraction of their.strength- after a relatively short time. For high strength glass reinforced composites, the glass filaments are mostly of the S-glass and E-glass types. This investigation reports the solvent effect of water on S-glass rovings (filament strands) and powders. S-glass is the strongest silicate glass developed in the past decade, the composition of which in weight percent is: A1₂O₃/MgO/SiO₂ = 25/10/65. In the temperature range covered (30 to 50°C), analyses of aluminum, magnesium, and silicon in water after different time periods indicate that magnesium is preferentially leached out of S-glass, either as filaments or as powders, by water. The concentrations of magnesium and silicon in the water reached 2 mg/litre or more depending on the temperature and length of contact time, while the aluminum concentration reached no more than 0.2 mg/litre. Decomposition products of the ingredients present in a composite, including the coupling and curing agents, could further complicate the degradation process. Rate relations are proposed and discussed based on the dissolution data.     

废醋纤(WCA)再生烟滤嘴纤维研究——第3报 再生CA纤维的结构性能

用扫描量热(DSC),X-射线衍射和电子显微镜等方法,研究了含有增塑剂的再生二醋酸纤维素(CA)的热性能,结晶结构,表面结构和纤维的物理机械性能。研究结果表明,增塑剂与CA是相溶均相,CA的葡萄构象能、玻璃化温度(T_g)、结晶温度(T_c)、纤维物性随着增塑剂含量增加而下降,但对结晶结构影响甚微,再生CA纤维的表面与商品CA纤维一样光滑,经处理可得裂纹。     

硅酸盐玻璃的风化

综述影响浮法玻璃、压延玻璃、光学玻璃、晶质玻璃和器皿玻璃的耐风化性因素，风化产物的形貌和风化过程。导出了玻璃表面风化析碱量和环境条件如温度、湿度和时间的关系：玻璃样品的析碱量随风化温度、湿度和时间而增加。风化产物的形貌和成分用SEM，WDS，EPMA和XPS来检测。结果表明：钠钙硅酸盐玻璃风化表面产物主要为钠和钙的碳酸盐。如玻璃发生分相，玻璃的耐风化性不仅与玻璃成分有关，还与分相形貌有关。富硅滴状结构易风化，风化程度随富硅相液滴的数量而增加。在相同条件下，富硅相的连通结构降低玻璃的风化程度。还阐述了玻璃风化机理及如何防止风化的方法，并对改善玻璃耐风化性指出了研究方向。     

抗静电增强尼龙6的研制

以非离子和阴离子型抗静电剂组成复合抗静电体系，用玻璃纤维为增强剂，研制成具有良好的抗静电和机械性能的抗静电增强尼龙６，研究了抗静电复合体系构成，玻璃纤维含量对抗静电增强尼龙６性能的影响，并对其流变性能进行了考察。     

A METHOD FOR MEASURING THE SOFTENING TEMPERATURE OF GLASSES1

For the purpose of measurement the softening point of glasses is defined as that temperature at which a uniform thread of glass .65 mm to 1 mm in diameter suspended in a vertical position in an electric furnace of specified characteristic will elongate at the rate of 1 mm per minute. The measurements on a given glass are reproducible to within 1 to 2°C. This method has been found useful as control of glass composition in melting units as well as a point of reference to distinguish between different glasses. Data are given showing the variation in softening point of a tank glass and a pot glass over an interval of time.     

THE MANUFACTURE OF FUSED BIFOCAL SPECTACLE LENSES1

I. The process of making fused bifocal spectacle lenses is based on patents taken out about 1906. Such lenses are made by fusing a crown glass with an index of refraction of 1.5230 with a lead glass having indexes of refraction of 1.616, 1.66, and 1.69. 11. Problems in making satisfactory glass involved thermal expansion, surface crystallization, surface bubbles, and the softening temperatures of the glasses. The effect of composition of the glass in curing these defects is discussed and satisfactory compositions are given. Testing methods for control are given. III. A later development is the so-called colorless fused bifocal in which a barium glass replaces the lead glass of the normal lens. The use of barium glass introduces new problems, especially the quality of the glass and the tarnishing of the surface. The relative softening temperatures of the barium and crown glass as well as the thermal expansion had to be controlled.     

THE INDEX OF REFRACTION OF SOME SODA-LIME-SILICA GLASSES AS A FUNCTION OF THE COMPOSITION1

Twenty-one soda-silica and twenty-one soda-lime-silica glasses were made in platinum crucibles and the index of refraction and chemical compositioii of each glass were determined. From the data obtained equations were derived and a diagram was prepared showing the relations between index of refraction and composition of these glasses. The diagram makes it possible to predict with considerable accuracy (1) the index of refraction of any glass in the range of compositions considered, from its composition. and (2) the cwpositions of the various glasses which have the same index of refraction. Some evidence is presented indicating that index of refraction of the soda-silica glasses may be a simple function of certain soda-silica compounds which may be present in glass.     

REVIEW OF THE RELATION OF DENSITY AND REFRACTIVE INDEX TO THE COMPOSITION OF GLASS: I *

The density, refractive index, and specific refractivity and their relationship to the composition of glass are discussed. The subject is treated from the standpoint of additive properties based on composition both as to linear and collective or complex functions. Not only are these applied in the rapid checking of constancy of composition in practice but also from the standpoint of possible changes in properties through partial changes of individual components. There is the further possibility of tying up constitution with composition so that a structural analysis may result. The article serves as a review of existing literature and elaborates the possibility of expansion of published data.