共查询到20条相似文献,搜索用时 93 毫秒
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1 前言 珠光颜料的初期用途主要是作为珍珠和钮扣等特殊的装饰用材料。这些用途中的珠光颜料是由鱼鳞中提取、精制而得的天然珠光颜料和由合成的优质能大量生产的碱式碳酸铅、氯氧化铋等片状晶体所成的珠光颜料开发发展而来的。 一方面,无毒的化学和机械稳定的云母系珠光颜料被开发,从光泽角度讲比前述的合成片状品体差,但由于能处理成粉末状态、易分散性、在热塑性塑料混炼时粒子也不被破坏等优点, 相似文献
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新型珠光颜料的研究和应用进展 总被引:9,自引:0,他引:9
综合介绍了云母珠光颜料的发展概况和技术动态,进一步阐述了云母珠光颜料的制备工艺、性能测定及其应用。云母珠光颜料以其独有的优异性能,应用于越来越多的领域。 相似文献
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虹彩型云母钛珠光颜料的制备与表征 总被引:3,自引:0,他引:3
本文研究了虹彩型云母钛珠我颜料的制备方法。通过电子能谱,光谱反射率,色度值,涂覆率及比表面积等的测试,表征了颜料的组成及颜色,归纳出涂层的光学厚度与虹彩效应,光学性能的关系及周期性递变规律的机理。 相似文献
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云母钛颜料珠光光泽的探讨 总被引:1,自引:0,他引:1
本文在研究云母钛颜料光学性质的基础上,提出用光反射法测定样品的折射率,由折射率的大小评价云母钛颜料的珠光光泽,具有一定的理论和实际意义。 相似文献
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本文研究了不同的云母钛珠光颜料液相沉积剂的制备工艺。根据钛的含氧酸盐和无氧酸盐的理化性质、水解机理的不同,分别配制了4种不同的钛盐溶液(①Ti(SO4)2 H2SO4,②Ti(SO4)2加热分解 H2SO4,③TiCl4 HCl,④TiCl4 H2SO4)作为制备云母钛珠光颜料的液相沉积剂。实验结果表明:以第③种方案配制的钛盐溶液在云母表面进行液相包膜后,所得云母钛珠光颜料的质量较好。 相似文献
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银白色云母钛珠光颜料的制备及性能研究 总被引:4,自引:0,他引:4
本文论述了银白色云母钛珠光颜料的制备方法与机理,并通过XRD、SEM、光谱反射率及涂覆率的测试,着重研究了珠光颜料的光学性能与锻烧条件和晶体构型之间关系。 相似文献
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异晶型TiO2/云母珠光颜料的制备及性能研究 总被引:12,自引:0,他引:12
本文着重研究了涂层为锐钛和金红石两种晶型的云母钛珠光颜料的制备方法,晶型转化的影响因素及各自的性能特征:工艺参数,涂层结构与光学性能之间的关系。 相似文献
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It is no secret that the pharmaceutical industry is undergoing rapid
and revolutionary change. The impact of managed care and threatened pricing caps by the US Congress on new products has caused many companies to re-evaluate their short and long term business and research strategies. In too many cases, this has resulted
in down-sizing by both lay-offs and attrition. For most analytical laboratories, this has meant doing more with less resources. There are several major ‘realities’ that are having a significant influence on the amount and type of analytical support required to bring a new product to the market place in today''s regulatory climate. They are pre-approval inspections, the Barr decision and the proposed ICH guidelines. Other realities of the 1990s are also influencing the operation of the analytical laboratory. To cope with these realities, wise use of resources is mandatory. The strategies employed by each company differ, but laboratory automation is usually one of the important elements of the equation. Other elements include contract laboratories, consultants and temporaries. Each of these elements provides part of the solution to doing more with less, but each has its own positives and negatives which must be considered. This paper looks at the relationships between these factors and their impact on the analytical laboratory. 相似文献
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