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合成聚合物表面施胶剂AGP 总被引:3,自引:0,他引:3
本文介绍了合成聚合物表面施胶剂AGP在胶版印刷纸和牛皮箱纸板生产中的应用试验,结果表明用AGP进行表面施胶能较大程度地提高纸的抗水性能,并可减少浆内施胶剂的用量。 相似文献
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分散松香胶施胶机理和应用 总被引:1,自引:0,他引:1
l前言施胶是使纸和纸板取得抗水性能的一种加工程序。如包装用纸和纸板、书写纸、胶版印刷纸等均需要进行一定程度的施胶。施胶过程就是在纸浆中加入一些抗水性物质,它能给于纸张一定的抗水性能。这种物质就是我们通常所说的施胶剂。施胶剂分为内部施胶剂和表面施胶剂。内部施胶剂可分为:松香系列施胶剂、合成施胶剂。松香施胶剂又可分为,皂化松香施胶剂、强化松香施胶剂、乳液游离分散松香胶。前两种施胶剂通过纯碱(Na2CO3)皂化熬制而成,施胶效果不甚理想、成纸的PH值过低,纸张脆性增加。国内于90年代初期开始研制与生产分散松香… 相似文献
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通过表面施胶改善纸的性能是提高产品质量的重要手段之一。合理使用表面施胶剂,不仅可以提高施胶效果及纸的表面强度,而且可以减少内部施胶剂用量,从而最大限度地降低成本。 相似文献
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新型纳米表面施胶剂的合成与应用 总被引:3,自引:0,他引:3
采用自制的纳米表面施胶剂DS-SS610与氧化淀粉配制成表面施胶液进行表面施胶,探讨了表面施胶剂用量、离子环境、淀粉种类等条件对表面施胶效果的影响。结果表明,当DS-SS610与氧化淀粉的质量比为2%时,应用效果好,性价比高。在阴离子环境、中性环境、弱阳离子环境下及与阳离子淀粉匹配时应用效果最好。 相似文献
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使用α-淀粉酶制备了高浓度、低黏度的淀粉胶液,用作轻型纸表面施胶剂。最佳制备工艺条件为:α-淀粉酶加入量0.02%(对绝干淀粉);温度80℃时保温20 min;快速升温到98℃,保温30 min。所得产品固含量为9.0%,60℃时黏度5.5~6.5 mPa·s。用于60 g/m2轻型纸表面施胶时,成纸表面强度提高23.2%,施胶成本吨纸节约33.67元。 相似文献
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A new method to measure in vivo human skin hydrophobia 总被引:2,自引:0,他引:2
Elkhyat A Agache P Zahouani H Humbert P 《International journal of cosmetic science》2001,23(6):347-352
Until now, the wettability of the skin has been only estimated through the measurement of its critical surface tension (Zisman), or surface free energy. These methods give information on the behaviour of the surface with water, but cannot quantify its behaviour with other polar liquids. In this paper we propose to express both the hydrophilia of the skin (Hi) by the ratio of its critical surface tension (gamma(c)) to the water surface tension (gamma(H(2)O)), and its hydrophobia (Ho) by the ratio of the difference between the critical surface tension (gamma(c)), and the value of the water surface tension (gamma(H(2)O)) normalized by the latter. By using this proposed parameter, it should be possible to classify skin surfaces according to their affinities to water, which is of major importance in Cosmetology as well as in biology. We also discuss the relationship between surface hydrophilia (Hi) and polarity (P) as defined by Wu, and water adhesion tension (tau(o)) as described by Vogler. The gamma(c) of untreated skin was 27.3 +/- 3.6 mJ m(-2), confirming previous data, and consequently basal Hi was 38%. Either cleaning with ether or hydration by occlusion induced a diminution of the wetting capacity of the surface and consequently a decrease of Hi to 29% and 33%, respectively. In contrast, washing the skin surface with soap and water increased surface Hi to 43%. 相似文献
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单分子膜研究的方法及现状 总被引:3,自引:0,他引:3
单分子膜一般是将两亲性物质溶解在铺展溶剂中制成铺展溶液,然后铺展在底液上而得的。在其性质的研究中,测定表面压-面积关系曲线是最基本、也是最重要的一种研究手段。但是,仅有表面压-面积曲线所能了解的信息是远远不够的,因此必须结合另一些手段进行研究,测定表面粘度就是其中很重要的一种。而随着现代光谱仪器的更新、发展,光学方法已日益成为单分子膜研究的一个重要途径。 相似文献