Coating standard: titanium dioxide related test standard

The core tip: titanium dioxide, the main component of titanium dioxide (TiO2) white pigment Its scientific name is titanium dioxide, and its molecular formula is TiO2 It is a kind of polycrystalline compound Its particles are arranged regularly and have lattice structure The application of GR composite titanium dioxide pigment in coating system can be limited to the same or similar performance index as titanium dioxide; GR composite titanium dioxide pigment can be widely used in coating system to improve the performance of coating and greatly reduce the use cost of materials (001) (14.01.26) Titanium dioxide Paint knowledge | precautions for wall paint color selection Recommended introduction: when painting the wall, the owner sometimes has difficulty in choosing what color of the wall paint to paint In fact, there is no ugly color in the wall paint, only the disharmonious color matching The use of wall color contains the knowledge of health Too strong color will stimulate people's perception, make people have a sense of fidgety, affect people's mental health Grasp the basic principles of wall color and paint a colorful space 1、 Wall paint color selection notice 1 Light color is generally used for the top surface Light colors make people feel light, dark colors make people feel heavy Usually, the treatment of rooms is from top to bottom, from shallow to deep For example, the ceiling and walls of rooms are white and Home of coatings news: titanium dioxide, the main component of titanium dioxide (TiO2) white pigment Its scientific name is titanium dioxide, and its molecular formula is TiO2 It is a kind of polycrystalline compound Its particles are arranged regularly and have lattice structure The application of GR composite titanium dioxide pigment in coating system can be limited to the same or similar performance index as titanium dioxide; GR composite titanium dioxide pigment can be widely used in coating system to improve the performance of coating and greatly reduce the use cost of materials (001) (14.01.26) The main application fields of titanium dioxide are coating and plastics , ink, paper, of which coating accounts for 60%, plastic accounts for 20%, paper accounts for 14%, and other (including cosmetics, chemical fiber, electronics, ceramics, enamel, welding rod, alloy, glass and other fields) accounts for 6% Titanium dioxide is not only used as colorant in rubber industry, but also has the functions of reinforcement, anti-aging and filling Titanium dioxide is added to white and colored rubber products, which is resistant to sunlight, cracking, discoloration, high elongation and acid and alkali Titanium dioxide for rubber is mainly used for automobile tires, rubber shoes, rubber floors, gloves, sports equipment, etc generally, it is of sharp titanium type But for the production of automobile tires, a certain amount of rutile products are often added to enhance the ozone and UV resistance Titanium dioxide is widely used in cosmetics Because titanium dioxide is nontoxic and superior to lead white, almost all kinds of powders use titanium dioxide to replace lead white and zinc white Only 5% - 8% titanium dioxide can be added to the perfume powder to get permanent white, making the fragrance more greasy, with adhesion, absorption and covering power Titanium dioxide can reduce greasy and transparent feeling in water powder and cold cream Titanium dioxide is also used in various other spices, sunscreen, soap, white soap and toothpaste 1、 Cosmetics titanium dioxide is divided into oily and aqueous titanium dioxide Because of its stable chemical properties, high refractive index, high opacity, high hiding power, good whiteness, and no toxicity, it is widely used in the field of cosmetics and has the effect of beauty and whitening Titanium dioxide related test standard (physical properties) 1) relative density in common white pigments, titanium dioxide relative density is the smallest, the same quality of white pigments, titanium dioxide surface area is the largest, pigment volume is the highest 2) The melting point and boiling point of anatase titanium dioxide are virtually nonexistent because the anatase will change into rutile at high temperature Only rutile titanium dioxide has melting point and boiling point The melting point of rutile titanium dioxide is 1850 ℃, the melting point in air is (1830 ± 15) ℃, and the melting point in oxygen enriched is 1879 ℃ The melting point is related to the purity of titanium dioxide The boiling point of rutile titanium dioxide is (3200 ± 300) ℃, and titanium dioxide is slightly volatile at this high temperature 3) Due to the high dielectric constant of titanium dioxide, it has excellent electrical properties In the determination of some physical properties of titanium dioxide, the crystal direction of titanium dioxide crystal should be considered The dielectric constant of anatase titanium dioxide is relatively low, only 48 4) The conductivity of titanium dioxide has the properties of semiconductor, its conductivity increases rapidly with the rise of temperature, and it is also very sensitive to hypoxia The dielectric constant and semiconductor properties of rutile titanium dioxide are very important to the electronic industry, which can be used to produce electronic components such as ceramic capacitors 5) According to the scale of Mohs hardness, rutile titanium dioxide is 6-6.5, anatase titanium dioxide is 5.5-6.0 Therefore, anatase titanium dioxide is used to avoid abrasion of spinneret holes in chemical fiber extinction 6) Although hygroscopic titanium dioxide has hydrophilicity, its hygroscopicity is not very strong, and rutile type is smaller than sharp titanium type The hygroscopicity of titanium dioxide is related to its surface area The surface area is large and hygroscopicity is high 7) Thermal stability titanium dioxide is a kind of material with good thermal stability 8) The particle size distribution of titanium dioxide is a comprehensive index, which seriously affects the performance of titanium dioxide pigment and the application performance of the product Therefore, the discussion of covering power and dispersion can be directly analyzed from the particle size distribution The factors that affect the particle size distribution of titanium dioxide powder are more complex The first is the size of the original particle size By controlling and adjusting the hydrolysis process conditions, the original particle size is within a certain range The second is the calcination temperature In the calcination process of metatitanic acid, the particles go through a crystal transformation period and a growth period Control the appropriate temperature to make the growth particles in a certain range Finally, the product is crushed Usually, the remoulding of Raymond mill and the adjustment of the speed of analyzer are used to control the grinding quality At the same time, other grinding equipment can be used, such as universal mill, air flow mill and hammer mill Test standard: Hg / t2225-2010 industrial aluminum sulfate HS / t3-2006 identification method of rutile titanium dioxide treated by silicon aluminum Sn / t0564.1-2013 titanium dioxide Part 1: Determination of Fe2O3 content Atomic Absorption Method Sn / t0564.2-2012 titanium dioxide Part 2: Determination of lead, mercury and soluble arsenic content coating family focuses on coating, diatom mud, paint coating, coating process, News and information of fire retardant coating, coating, diatom mud, paint coating, coating technology, decoration knowledge and decoration effect map of fire retardant coating,