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首页> 外文期刊>Paintindia >Water Based Coatings Extenders - Calcite Mr Veeramani shares his knowledge in this Column devoted exclusively to Water Based Coatings
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Water Based Coatings Extenders - Calcite Mr Veeramani shares his knowledge in this Column devoted exclusively to Water Based Coatings

机译：水性涂​​料增效剂-方解石Veeramani先生在本专栏专门介绍水性涂料的专栏中分享他的知识

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IN the last chapter we saw the introduction on Extenders. Now let us see the Extenders one by one in detail like, source, crystal structure, their properties and how it is used in the Paint matrix. This will give a good insight, to the readers and they can understand the choice and function of each extender in the paint matrix. Let us start with CALCITE also known as CALCIUM CABONATE and their derivatives/variants. Mineral additives in paint constitute anywhere from 20 to 50 % of the paint formulation. Particularly, water based paint formulations utilize maximum quantities of mineral extenders particularly titanium dioxide (Rutile) calcite, mica, clay minerals (thickeners), quartz, barytes and pigments. In the present paper, the effect of calcined kaolin and calcite as an extender and substitute for TiO2. One of the most expensive pigments in paint formulations has been revealed. The quality of paint was compared with the properties based on both wet and dry paints such as viscosity, density, opacity, gloss and fineness of fillers and pigments. The paint recipe prepared with calcined kaolin and calcite showed improved in physical properties especially, because the mineral particles effectively filled the gaps among TiO2 particles and kept them apart via physical interactions. Overall, a new paint formulation has been developed with low cost and good quality.
机译：在上一章中，我们看到了有关扩展器的介绍。现在，让我们详细地逐一查看扩展器，例如源，晶体结构，它们的属性以及它在Paint矩阵中的使用方式。这将为读者提供一个很好的见解，他们可以了解涂料基体中每种增量剂的选择和功能。让我们从也被称为钙碳酸钙的钙钙石及其衍生物/变体开始。涂料中的矿物添加剂占涂料配方的20％至50％。特别地，水基涂料配方利用最大量的矿物增量剂，特别是二氧化钛（金红石）方解石，云母，粘土矿物（增稠剂），石英，重晶石和颜料。在本文中，煅烧高岭土和方解石作为增量剂和替代TiO2的作用。已经揭示出涂料配方中最昂贵的颜料之一。将涂料的质量与基于干湿涂料的性能进行了比较，例如粘度，密度，不透明度，光泽度和填料和颜料的细度。用煅烧的高岭土和方解石制备的涂料配方显示出物理性能的改善，特别是因为矿物颗粒有效地填充了TiO2颗粒之间的间隙，并通过物理相互作用将它们分开。总体而言，已经开发出了一种低成本，高质量的新型涂料配方。

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