共查询到20条相似文献,搜索用时 93 毫秒
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高效液相色谱法检测26 %辛·高效氯氟氰菊酯乳油含量 总被引:1,自引:0,他引:1
建立了高效液相色谱法测定26%辛·高效氯氟氰菊酯乳油中辛硫磷和高效氯氟氰菊酯含量的方法.方法的准确度高、精密度好,变异系数为辛硫磷0.09 %,高效氯氟氰菊酯0.97 %,回收率为辛硫磷99.2 %~101.2 %,高效氯氟氰菊酯99.2 %~100.2 %.方法快速、简便、准确. 相似文献
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文章简要回顾了近年来的新型高效混凝土减水剂研究现状,阐述了包括多环芳烃、氨基磺酸、聚羧酸及改性木质素磺酸盐等几种主要类型的新型高效减水剂的合成技术、性能特点及应用现状,结合目前国内高效减水剂的研究现状,展望了高效减水剂的发展方向,认为开发减水率更高、性能更优异、经济性更好的新产品是今后高效混凝土减水剂发展的主要方向. 相似文献
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较详细地介绍了在羊毛洗涤剂中添加碳酸胍对洗涤剂洗涤能力的影响,及其对洗涤后羊毛织物性能的影响。 相似文献
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制备出了一种新型的环保低泡精练剂HD,并对其进行了应用实验。结果表明,具有良好的性价比、较高的毛效、白度及退棉籽壳率。 相似文献
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Optimisation of a low-temperature combined scouring and bleaching process for polyester/cotton fabric using triethanolamine hydrochloride-activated sodium chlorite as bleaching agent and a self-emulsifiable solvent composition as scouring agent has been carried out. The effect of various parameters, namely bleaching agent concentration, time and temperature of treatment, has been investigated by a factorial design methodology. 相似文献
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以异辛醇聚氧乙烯醚、P2O3为主要原料,合成异辛醇聚氧乙烯醚磷酸酯。其钠盐具有优良的耐碱性及高温耐碱渗透性,可作为性能优良的精练剂,经其处理过的织物有较好的润湿性和自度。 相似文献
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表面活性剂的复配及其在煮练中的应用研究 总被引:2,自引:0,他引:2
研究了不同类型的表面活性剂,有机溶剂和无机助剂的复配问题,并把复配表面活性剂应用于煮练中。通过测定织物煮练后的白度和毛效,采用正交实验的方法,确定出最佳的复配比较,并把复配精练剂和进口精练剂在应用性能上进行对比实验,表明复配精练剂是一种新型的,性能较好的精练剂,并且能有效地去除棉籽壳。 相似文献
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A commercial serine‐type protease preparation (Alcalase) was examined as a scouring agent for cotton fabrics. Application of the enzyme induced moderate changes in the composition of fibers that were mainly associated with the removal of protein and waxes. The relationship between the compositional modifications and structural transformations, which were reflected in the crystallinity index of the bioscoured cotton fibers, was demonstrated. The protease‐treated textiles displayed superior whiteness and outstanding compressional resilience but exhibited a poor hydrophilicity and dyeing capacity. One‐step scouring at neutral conditions, where proteolytic activity was supported by multienzyme combinations, could generate textiles with sufficient water absorbency and advanced performance. The implementation of the appropriate scouring conditions (concentration and combination of enzymes) could form fabrics with the desired physicochemical and micromechanical properties. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2009 相似文献
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Ahmad Niaz Qaiser Jawed Malik Sher Muhammad Tahir Shamim Shoaib Asghar 《Coloration Technology》2011,127(4):211-216
A study on bioscouring of cotton yarn with the pectinase enzyme was carried out and the results compared with the usual alkali scoured material. The results indicate that the bioscoured yarn has lower percentage of non‐cellulosic constituents (impurities), higher tenacity, higher absorbency and the same whiteness after hydrogen peroxide bleaching as compared with the Solomatic bleached yarn. A similar study on cotton fabric indicates that a combined desizing and bioscouring is not feasible at least at ambient temperature. More work, however, is required to compare bioscouring followed by bleaching with the Solomatic or two step scouring and bleaching methods. One interesting finding is that the efficiency of washing of the desized fabric improves on adding ethylene diamine tetraacetic acid sequestrating agent in the wash liquor. Additional advantages of bioscouring are lower energy cost and more easily biodegradable effluent in comparison to alkali scouring. 相似文献
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D301树脂分离衣康酸的工艺研究 总被引:1,自引:0,他引:1
采用弱碱性阴离子交换树脂D301对发酵法生产的衣康酸进行了分离研究。通过静态交换实验,研究了D301树脂对衣康酸的静态交换动力学,确定了传质机制和影响因素;通过动态交换实验,研究了以硫酸为洗脱剂,以氨水为再生剂的工艺过程,确定了主要工艺参数。 相似文献