新荧光增白剂BBU用量与助剂的配伍性研究

新荧光增白剂BBU广泛用于棉纤维、粘胶纤维的增白,根据现有的条件介绍新荧光增白剂BBU特点性能进行实验,探讨160×80,50×50平纹全棉丝光白布,在使用新荧光增白剂BBU用量与白度、色光、水洗牢度的变化关系,研究与现阶段使用酸、渗透剂的配伍性,为改善工艺提供依据。     

The effect of additives on zinc electrodeposition from deep eutectic solvents

The electrodeposition of metals using ionic liquids has received considerable attention during the last ten years. Recent developments have taken these novel electrolytes from laboratory to commercial scale. One of the factors limiting the development into practical plating systems is the understanding of how brighteners function. In this study we describe the addition of three polar additives and their effect upon the nucleation mechanism of zinc and the resultant morphology. It is shown that the structure of the zinc deposits is controlled by double layer properties and it is proposed that the brightening effect of ethylene diamine and ammonia are caused by their ability to inhibit the adsorption of chloride at the electrode surface. The deposition of most metals using ionic liquids results in apparently amorphous deposits, which tend to be actually nano-crystalline. The additives used in this study produce macro-crystalline deposits, which resemble those obtained from aqueous solutions.