tidoxe's creative blog on DashBurst. In 2007 we imported the very first Indian titanium concentrate, which was one of the earliest companies to import Indian titanium concentrates, and successfully spread the Indian ilmenite into Chinese market. So far Shanghai Zhongjing is still the largest importer of Indian ilmenite ore in China. Headquartered in Shanghai Hongqiao we are the leading supplier and service provider of titanium industry chain in China. - tidoxe

In 2007 we imported the very first Indian titanium concentrate, which was one of the earliest companies to import Indian titanium concentrates, and successfully spread the Indian ilmenite into Chinese market. So far Shanghai Zhongjing is still the largest importer of Indian ilmenite ore in China. Headquartered in Shanghai Hongqiao we are the leading supplier and service provider of titanium industry chain in China.

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tidoxe October 14

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1. What is Food Grade Titanium Dioxide?

Edible titanium dioxide is commonly known as white pigment, with a molecular formula of TiO2, which is the abbreviation of food grade titanium dioxide. Titanium dioxide is used as a coloring agent and food whitening agent. It is non-toxic, tasteless, white powder, and sometimes it is made into liquid for easy dispersion. Titanium dioxide is widely used in the pharmaceutical, food and cosmetic industries, and titanium dioxide white pigment is one of the most widely used pigments.

2. Application of Titanium Dioxide in Food

Titanium dioxide is mainly used in foods in meat products, surimi products, candies, baked goods, cheese, icing, seasonings and food supplements. In addition to the whitening effect, food grade TiO2 can make the color softer if used in conjunction with other pigments.

At present, titanium dioxide is used as diluent in bread, noodles, steamed bread and other improvers. The purpose is to make enzyme preparations (such as fungal α - amylase, noodle browning inhibitor, etc.) used in bread, noodles and steamed bread improver can be evenly added into flour, so as to improve the dispersion of products. It can replace calcium carbonate (limestone) and calcium sulfate (gypsum) which are permitted to be used in flour. The amount of titanium dioxide used in the modifier is generally about 30%. The content of titanium dioxide added to flour in this kind of improver is generally not more than one ten thousandth, which is far below the relevant regulations. The use of titanium dioxide not only makes flour have good flowability, but also has good safety.

3. Relevant Regulations for titanium dioxide As a Food Additive

The international food hygiene and food additives competent organizations JECFA, CAC, FDA, EFSA stipulate that titanium dioxide can be widely used in food in the regulations on the use of food additives.

In the process of food processing and production, in order to improve the quality of food color, aroma and taste, as well as for the needs of anti-corrosion and processing technology, the titanium dioxide added in food is safe and reliable for consumers as long as it meets the relevant regulations of the international food health organization.

Shanghai Zhongjing International Trade Co., Ltd. is a professional titanium dioxide inc, we provide tio2 titanium dioxide, tio2 titanium dioxide and etc. Want to know more? Please contact us.

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tidoxe October 14

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The plastics industry is the second largest user of titanium dioxide and the fastest growing field in recent years. Titanium dioxide plastic can not only make use of its high covering power, high achromatic power and other pigment properties, but also improve the heat resistance, light resistance and weather resistance of plastic products, so as to protect plastic products from UV light, so as to improve the mechanical and electrical properties of plastic products.

Most of the titanium dioxide particles used in plastics are fine. The particle size of titanium dioxide used in coatings is usually 0.2 ~ 0.4 μm, while the TiO2 particle size of plastic is 0.15 ~ 0.3μM. In this way, a blue background phase can be obtained, which can shield most resins with yellow phase or those prone to yellowing. Titanium dioxide for ordinary plastics generally does not undergo surface treatment. The reason is that it usually uses conventional hydrated alumina inorganic coated titanium dioxide. When the relative humidity is 60%, the adsorption equilibrium water is about 1%. When the plastic is extruded at high temperature, the evaporation of water will cause pores on the smooth plastic surface. This kind of titanium dioxide that is not coated with inorganic substances generally has to undergo organic surface treatment (polyol, silane or siloxane). Because titanium dioxide plastic is different from titanium dioxide for coatings, the former is processed and mixed in a low-polar resin through shearing force. The organic surface-treated titanium dioxide can be better dispersed under proper mechanical shearing force.

With the continuous expansion of the application range of plastic products, many external plastic products, such as plastic doors and windows, building materials and other outdoor plastic products, also have high requirements for weather resistance. In addition to the rutile titanium dioxide must be used, surface treatment is also required. This surface treatment generally does not add zinc, but only adds silicon, aluminum, zirconium and so on.

According to the above introduction, the quality requirements for titanium dioxide used in plastic are summarized as follows:

1. Hiding power: Titanium dioxide with good hiding power makes the plastic products lighter and thinner;
2. Whiteness: It determines the appearance of light-colored or white plastic products;
3. Dispersibility: It affects the production cost of plastic products. The poorly dispersed titanium dioxide in plastic products will affect the smoothness and brightness of the products;
4. Weather resistance: Plastic products used outdoors and plastic doors as well as windows must ensure the weather resistance of titanium dioxide.

Shanghai Zhongjing International Trade Co., Ltd. is a professional national titanium dioxide company limited, we provide tio2 titanium dioxide, titanium dioxide and etc. Want to know more? Please contact us.

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tidoxe October 14

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Studying the modification of titanium dioxide plastic and its mechanism, revealing the structure-performance relationship of modified rutile titanium dioxide nanoparticles, is of great significance to the design and development of high-value-added as well as high-weatherability plastic products.

1. Using aluminum sulfate, sodium silicate and zirconium oxychloride as the coating agent, sodium hexametaphosphate (SHMP) as the dispersant, the inorganic coated and modified rutile titanium dioxide nanoparticles were prepared. By improving the composition of the coating agent and the orthogonal experiment design, with the particle size, potential and degree of dispersion as evaluation indicators, the preparation process of modified rutile titanium dioxide nanoparticles was optimized. The modified coated rutile titanium dioxide nanoparticles can be applied to PVC plastics and their anti-degradation as well as weather resistance properties can be studied.

2. Aluminum oxide, silicon dioxide, and zirconium dioxide are used to coat the surface of rutile titanium dioxide nanoparticles to form ZrO2, SiO2 and Al2O3 coated rutile titanium dioxide nanoparticles. The research results show that the average particle size of the coated particles is about 450nm, the dispersion performance is good, and the coating is dense and uniform; After ZrO2 coated rutile titanium dioxide, the loss of gloss and oil absorption decreased the most, the whiteness increased the most, the loss of gloss decreased from 70% to 25%, the oil absorption decreased from 21.5g/100g to 17.5g/100g, and the whiteness decreased from 86.7% increased to 88.5%; However, the coating of aluminum, silicon, and zirconium has little effect on the hiding power of rutile titanium dioxide.

3. According to the difference in the coating ability of ZrO2, SiO2 and Al2O3 coated rutile titanium dioxide, ZrO2/Al2O3 coated rutile titanium dioxide nanoparticles were designed and prepared. The double layer structure of ZrO2/Al2O3 coated rutile titanium dioxide nanoparticles not only increases the whiteness, but also effectively reduces the amount of ZrO2, which greatly reduces the cost of modified rutile titanium dioxide nanoparticles.

4. In order to further improve the performance and reduce the cost, an improved sol-gel method is adopted. A kind of ternary coated rutile titanium dioxide nanoparticles with outer layer of aluminum oxide, middle layer of silicon dioxide and inner layer of zirconia was designed and prepared. A new synthesis process of rutile titanium dioxide coated with ZrO2 / SiO2 / Al2O3 was developed. Compared with ZrO2/Al2O3 coated nanoparticles, it has the advantages of good dispersion performance, low loss rate, low oil absorption and high whiteness, and lower raw material cost. This will be more effectively used to improve the physical and chemical properties of titanium dioxide plastic.

The above shows some methods for modification of titanium dioxide plastic use. If you have any questions about the above information, please feel free to contact us.

Shanghai Zhongjing International Trade Co., Ltd. is a professional titanium dioxide powder suppliers, we provide tio2 titanium dioxide, titanium oxide coating and etc. Want to know more? Please contact us.

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