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该文研究了生物胶乳取代一定比例的丁苯胶乳对涂料性能及其对涂布纸成纸指标的影响.结果显示:生物胶乳能部分替代丁苯胶乳在涂料中使用,但随着生物胶乳替代丁苯胶乳比例的增大,涂布纸成纸的主要指标基本上呈逐渐下降的趋势.在保证涂布纸主要指标的前提下,生物胶乳最多能替代30%的丁苯胶乳. 相似文献
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YH-05羧基丁苯胶乳粘合剂在铜版纸中的应用 总被引:2,自引:0,他引:2
讨论了羧基丁苯胶乳物化性能对铜版纸涂布性能的影响,对比了YH-05、Dow-675、SD-656三种羧基丁苯胶乳的成纸性能.结果表明,燕化公司研究院研制生产的YH-05羧基丁苯胶乳各项性能指标与Dow-675、SD-656相当. 相似文献
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以中等亮度原纸为基材,通过优化涂料配方,调整颜料配比、涂布量和胶黏剂等参数,制得高亮度铜版纸,并对成纸亮度、光泽度、粗糙度和表面强度等性能进行分析评价。实验结果显示:当底涂层和面涂层中的颜料配比(研磨碳酸钙比高岭土)均为80/20,总涂布量为(30±2)g·m-2,即底涂和面涂各为(15±1)g·m-2,生物胶乳以1:1的取代比例分别替代底涂层和面涂层中3份羧基丁苯胶乳时,成纸亮度、光泽度、印刷光泽度及干拉毛速度均可达到亚光型铜版纸一等品的国家标准(GB/T 10335.1-2005)要求;研究还发现二次涂布纸的光泽度与粗糙度之间不存在反相关性,同时还分析了生物胶乳在面涂中应用的可能性。 相似文献
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使用涂布淀粉部分取代羧基丁苯胶乳,进行了涂布自卡纸的中试.中试过程中,在涂布白卡纸的背涂涂料中使用3份淀粉替代2份胶乳,连续生产,涂布白卡纸没有出现质量问题,并逐渐使用6份涂布淀粉替代4份胶乳,涂布白卡纸的有关性能没有出现明显波动,符合涂布白卡纸的质量要求.中试结果表明,使用涂布淀粉部分替代胶乳方案可行,并能有效降低生产成本. 相似文献
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在铜版纸、涂布白纸板等产品的涂料配方中,合成胚乳已经成为主要胶粘剂得到了广泛应用。由于合成胚乳的性质与涂料流变性、涂层强度、抗水性能、涂布纸光泽度、印刷适印性等密切相关,同时,合成胚乳价格一般不菲,因此,铜版纸厂家在选定胶乳品牌时都十分慎重。对于中小型铜版纸厂,一般都不具备从涂料制备。涂布、压光到印刷适性测定等一整套试验室试验装置和手段,不可能通过系统的试验来选择合成胶乳的品牌。我们在实践中摸索出了一套能快速判断合成胶乳能否适用于制备涂料的测试方法,现介绍如下。1合成胶乳的测试方法1.1固含量在扁… 相似文献
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丁苯胶乳在造纸工业中的应用 总被引:1,自引:0,他引:1
在20世纪40年代,丁苯胶乳在国外就开始作为涂料胶粘剂用于加工纸的生产。纸加工用的丁苯胶乳约占了苯胶乳产量的60%,我国丁苯橡胶胶乳的生产始于1960年,是由前苏联引进技术设备,在兰州化学工业公司合成橡胶厂建成投产。随着印刷设备的进步,更新和高速化,对纸涂料粘合剂的性能也提出了越来越高的要求。 相似文献
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涂布纸工业中的羧基丁苯胶乳 总被引:7,自引:0,他引:7
从1960年开始,羧基丁苯胶乳已开始被应用于纸和纸板的涂布.今天,由于其优良的性能和经济性,羧基丁苯胶乳被涂布纸工业大量和广泛地采用.纸张和纸板涂布的主要原因是改进其外观并创造一个适合于印刷的表面.纸的涂布改进了平滑度、光泽度和不透明度,并使得表面具有均一的油墨接收性和高的油墨光泽度.胶乳较之蛋白和淀粉胶粘剂有很多优越性.这些优越性包括高固含量而低粘度,对涂料的粘度影响很小;在高固含量下具有优良的上机运行性;高纸张光泽度和油墨光泽度;高纸张表面强度.本文综述了胶乳对纸张性质的影响,这些内容不论对涂布纸工厂和印刷厂都是很重要的. 相似文献
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以双端丙烯酰氧基聚醚聚硅氧烷(diAp-PDMS)和双端丙烯酰氧基丙基聚硅氧烷(diAOp-PDMS)为有机硅改性单体,通过半连续预乳化方法,分别改性聚丙烯酸酯乳液,并应用于涂料印花.研究了不同有机硅改性单体对改性胶膜的影响,并测定了2种改性乳液涂料印花的性能.结果表明:采用有机硅改性聚丙烯酸酯胶膜具有较低的吸水率和较高的断裂功,涂料印花织物具有较好的色牢度和柔软性.与双端丙烯酰氧基聚醚聚硅氧烷改性聚丙烯酸酯相比,双端丙烯酰氧基丙基聚硅氧烷改性聚丙烯酸酯胶膜具有较好的疏水性和拉伸性能,相应地,涂料印花具有较好的耐湿摩擦牢度. 相似文献
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In the first of two experiments, efficacy of a latex teat sealer product was tested under field conditions on 32 cows that had one side of the udder dipped with the test product and the other left as the control. Number of new coliform, staphylococcal, or streptococcal infections in treated quarters was not reduced from controls. In a second experiment, effectiveness of this product as a protective sealer was investigated on six cows dip challenged with a broth containing 1 million Escherichia coli/ml. On sealed teats the challenge was applied on top of the dried film. The challenge organism was recovered from 33% of treated quarters and 42% of control quarters 6 h after exposure. Organisms were recovered from none of the quarters by 31 h postchallenge. 相似文献
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Joanna R Topping John Haines Sian Kneller Pradip Patel 《Journal of the science of food and agriculture》2006,86(12):1826-1832
Commercial FITkits? ELISAs for four major latex allergens (Hev b1, Hev b3, Hev b5 and Hev b6.02) were modified to enable semi‐quantitative measurement of the allergens at low concentrations (5–10 ng mL?1). The recovery of latex allergens from foods spiked with a latex cold seal adhesive was determined using one sample from each of the following food groups: confectionery/chocolate, fruit/vegetables, fruit juices, ice cream, cheese, meat and pastry. Cheese and pastry samples proved problematic owing to their high fat content. When these samples were excluded, the overall recovery for Hev b6.02 was 98 ± 12% (mean ± SD) and for Hev b5 80 ± 17%. In general, Hev b1 and Hev b3 allergens were difficult to extract from all the foods tested. Of 21 food contact materials tested, the assays detected one or more latex allergen in seven of the samples. Commercial foods associated with these wrappers were tested to determine possible transfer of the allergens to the foods. Transfer of Hev b3 or Hev b5 to food was identified at low levels in three samples, with the highest level being found in a chocolate biscuit (approximately 17 ng mL?1 extract). Copyright © 2006 Society of Chemical Industry 相似文献
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Two thiol-activated proteinases with isoelectric points (pIs approximately 9–9·5) were purified from sodom-apple latex by chromatography on Q-Sepharose and Superdex 200. Proteinase I had an estimated molecular weight of approximately 25 000 and proteinase II one of about 30 000. The proteinases degraded casein and azocoll, proteinase I having a lower specific activity than proteinase II. Proteinase I was most active at pH 8–10, with the optimum at about pH 8. Proteinase II was most active at pH 6–8, with the optimum at about pH 7. 相似文献
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对非石棉胶乳抄取板中填料的功能与分类、填料的选用原则、常用填料和填料的补强机理作了简要概述,并展望了非石棉胶乳抄取板中填料的发展方向。 相似文献