Concrete Pigment Iron Oxide Red for Color Concrete Paver Road Brick Block

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FULLN CHEMICAL ceramic pigment red FU-1808 is a synthetic zirconium silicate inorganic ceramic pigment made of cadmium sulfide, selenium, quartz, zirconium dioxide and other raw materials by mixing, calcining and other processes. It's the product of high temperature calcination. According to different concentrations of cadmium sulfide and cadmium selenide, the color changes to different tones such as bright yellow, orange, red, bright red and dark red.

With the compound of the zirconium silicate crystal, the inclusion colors are more stable under high temperature.

FULLN CHEMICAL ceramic pigment red products are suitable for oxidizing atmosphere, and have good color effect in reducing atmosphere.

Inclusion Red FU-1808 is an inorganic pigment renowned for its vibrant red color, which surpasses the capabilities of conventional glaze pigments. This pigment is widely utilized in high-value ceramic products such as daily-use ceramics and artistic ceramics.
Inclusion Red FU-1808 delivers a bright and vivid red hue that enhances the aesthetic appeal of ceramic items. This pigment is designed to withstand high firing temperatures, ensuring consistent color performance during the ceramic manufacturing process. Non-Toxic and Harmless. It is safe to use, as it is non-toxic and poses no harm to human health.

This series of ceramic inclusion color products can be also used in ceramic bodies. Color effect should be tested before production.

Product fineness: 400 mesh;moisture ≦0.3%.

The fineness of the colorant should be controlled during the usage of this series. The complex inorganic color pigment can be added after the ball grinding of the glaze.

Wide Application: Its superior color properties make it ideal for a range of high-value ceramic products, adding significant value to the finished goods. FU-1808 is the preferred choice for ceramic manufacturers seeking a reliable, high-quality red pigment that ensures both performance and safety in their products.

This series of ceramic inclusion color products can present bright colors in transparent glazes with high gloss and have high stability in glazes with ZnO, B and Pb. The color effect in matte glaze will be weakened, and the glaze with excessive CaO is not conducive to the stability of color.

 

CODE NO.	COLOR NAME	COLOR	COMPONENTS	Firing Temperature	CAS CODE	DESCRIPTIONS
CERAMIC INCLUSION COLORS						CICP,Complex Inorganic Color Pigment
FU-1808	INCLUSION RED		Zr-Si-Cd-Se	1050-1300℃	102184-95-2	Suitable in glaze with ZnO content.

APPLICATION:

Ceramic arts

Ceramic wall tiles

 

Why Inclusion pigments are invented?

 

Ceramic colors are known for their unique stability in glazes and ceramic body at high temperatures. The stable temperature range of different colors in the glaze is 800~1300℃. The maximum firing temperature depends on the composition of the colors. According to the temperature range and other properties of color stability. It is suitable for hard enamel, soft enamel, wall tile glaze or sanitary enamel respectively. The stable temperature range of color in the body is 1100~1400℃. The specific temperature depends on the composition of the pigments.

It is found by electron microscope that uniform color is formed by fine particles with average particle size of micron. In order to improve the ability and stability of colorant, a basic requirement is to reduce the solubility of colorant particles in glazed glass as much as possible. Tin oxide (SnO2), zirconia (ZrO2) and zirconium silicate are all opacifiers in glass fluxes. Therefore, they have the basic conditions to be used as color coating.

However,the stability of the CdS/CdSe color in the glaze at high temperature is very poor. It usually break down above 800℃. By wrapping these colors in stable ZrSiO4 crystals, a stable color can be produced up to 1400 ℃.

High temperature stability

When ZrSiO4/Cd(S,Se) is applied to the glaze, the high temperature viscosity of the molten base glaze has a great influence on its color stability.

The very soft and flowing glaze will dissolve in the CdS/Se ZrSiO4 protective layer. Which causing the unstable Cd(SxSe1-x) colors to decompose. And this will cause the color of the coating to change. The stability of the inclusion color is to maintain its color stability in the glaze at the longest firing cycle and the highest firing temperature.

In order to test the high temperature stability of the inclusion pigment material, the colorimetric analysis is carried out by means of the ladder temperature method. The specific method is as follows: Take a long and narrow ceramic chip (50mm × 400mm). Evenly coat the surface of the chip with a layer of colored glaze. Then put the chip into the tube ladder furnace. The temperature gradient in the furnace can be controlled. There is 200C temperature difference along the length of the furnace, such as 950~1150℃, 900~1100℃. The ladder temperature strip is obtained after the sample is burned in the ladder temperature furnace. The range of firing temperature can be determined by color contrast along the length of the strip. When the color difference △E=0.9NBS, the corresponding temperature range is the firing temperature range.

 

 

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