Building and sanitary ceramics pigment choice and simple recipe – ceramics, pigment, paint – building ceramics industry
Ceramic pigment and glaze, as is building and sanitary ceramics products decorative coat. Ceramic products with closely integrated matrix and glazes, decorative landscaping play the role of building and sanitary ceramics products, so that the ceramic product into a colorful world. Now in the ceramics industry has entered a new era of color glazes, building and sanitary ceramics products decorative increasingly inclined to direct the glaze using a variety of colors, in order to build an array of new products to meet the different needs of domestic and international markets. Therefore, the skilled master the use of ceramic glaze pigment technology, for improving product grade, extensive product variety and types of enterprises of great importance. Pigment use of technology, including a pigment used in ceramic glazes all the technological aspects of products, primarily using the process conditions have pigment problems; pigment color problems; pigment particle size selection; pigment compatibility problems with rejection Several technical characteristics and technical requirements. Pigment of the problem is actually one of Frontier Science, which also involves in other relevant disciplines, such as color science, physical chemistry and ceramic technology issues. Ceramic pigment selection and use of technology significant, direct impact on the quality of products related to the enterprise. In the past, the name refers to ceramic paint ceramic decoration applied to the coloring materials [including high temperature and low temperature], broad coverage; the term pigment refers only to low firing ceramics decorative paint, only is a type of ceramic pigment only. Now, however, most of academia and business in the ceramic, either pigment or pigments, has been customary to name the two interchangeable, staggered to use, not hinder.
1, ceramic pigment adaptation conditions. In ceramic production enterprise, different ceramic products used in a variety of pigment and paint, should be able to meet the actual requirements of production process, can form the desired decorative effect, improve the product grade. The current building and sanitary ceramics products use ceramic pigment and ceramic pigments, ceramics and other household to be more than the rich. Building and sanitary ceramics products decorative ornaments methods in color, has been divided into the glaze color, glaze, glaze color, color porcelain body, glaze and color make-up of soil and other aspects. However, the pigment Although many types of decorative techniques, the use of effects and the advantages and disadvantages of each choice, when in use should be strictly selected. Such as color material is for underglaze underglaze color decoration, then covered with a layer of transparent glaze above, color decoration in underglaze flower face, with a good sense of decorative glass. However, the high firing temperature [1200-1320 degrees], optional pigment but a narrow range of varieties; glaze color sucked pigment painted in glazed surface, using low-temperature firing, the pigment attached to the enamel surface , due to the low color temperature baking [650-830 °], with the use of pigment for a wide range of advantages.
However, because of its pigment in the glaze on, easy to produce pigment in the leaching of metal compounds; glaze technology sector in the glaze color and glaze color between the [firing temperature of 1100-1200 degrees], pigment particles in the glaze layer in the middle, forming a hazy beauty of tone, but the use of pigment types is subject to certain restrictions; coloring porcelain body used to pigment blending into the blanks, so that the ceramic product formed excellent results, porcelain body surface generally transparent glaze; glaze is applied in paint pigment and glaze, the glaze to form a glaze [firing temperature of 1150-1280 degrees]; there is a will to pigment insoluble in kaolin, pottery made clothing [also known as make-up of soil] for the ceramics decoration, called the color make-up of soil, soil makeup can cover such a dirty brick tiles, play a significant role. Make-up still needed in the pigment layer of transparent glaze soil surface Zaishi [firing temperature of 1150-1250 degrees], increased protection and light effects.
In actual use, ceramic pigment and pigment have different firing range, the temperature is too high and too low will bring adverse effects to the fineness. Some pigment firing range is wide, such as chrome-tin pink, blue Haibi like. Both can be used for high-temperature firing underglaze color glaze color can also be used in low temperature firing, their results are good Condition. The scope of some pigment fineness fixed, use a lot of taboo, as lead antimony acid pigment, it can only be used to glaze color and low-temperature glaze decoration products, if more than temperature, the loss of color. In addition to firing temperature, there are a lot of pigment and paint flames on the firing in the kiln atmosphere is very sensitive, such as copper oxide pigments, when present in the oxidation flame green, and in the reduction flame will have to show when the red color change is very great.
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