What is barium sulfate?
Barium sulfate is an X-ray dual contrast agent. It is a high-density gastrointestinal contrast agent, which can be used alone in different proportions, but is usually used together with low-density gas to achieve the purpose of double contrast. Commonly used in gastrointestinal radiography, according to reports, uneven thickness of barium sulfate, is better than fine and uniform barium sulfate. Caution for intestinal fistula tube formation and prone to perforation of certain intestinal diseases, such as appendicitis, diverticulum, ulcerative enteritis, parasitic infections.
The role of barium sulfate
In medical treatment, barium sulfate is mainly used for radiological examination because it can absorb X-rays in the gastrointestinal tract and make it develop, so it is mainly used as a gastrointestinal contrast agent. In industry, it can be used as raw material or filler for paint, ink, plastic, rubber and battery, surface coating agent for printing paper and copper plate paper, sizing agent for textile industry. Glass products are used as a fining agent, which can defoaming and increase gloss. It can be used as a protective wall material for radiation protection. Also used in ceramics, enamel, spices and pigments and other industries. It is also a raw material for the manufacture of other barium salts.
Use of barium sulfate
1. The application of barium sulfate in paint is superior to most other filling powders. It has the characteristics of low cohesion, low light dispersion and fine particles. It is especially suitable for pigment topcoat, varnish, spray paint, etc., with chemical resistance and weather resistance. Its inert, insoluble in water, acid, alkali and other organic intermediary, excellent gloss and particle fineness makes the long-term exposure of the topcoat to be maintained. Barium sulfate is recommend used in topcoats to increase surface hardness and color stability.
Barium sulfate has high filling and can be applied to all coating series, such as primers, thick paste coatings and other types. Its low specific surface area and particle size distribution and easy fluidity make barium sulfate have low abrasion during processing. Barium sulfate is recommend used for automatic primer surface layer, and even high filling also maintains good uniformity and smoothness.
2. Barium sulfate is used in latex paint, which is called "acid-resistant" latex paint. Acid resistance even when exposed. The chemical properties of barium sulfate can be increased by its easy dispersion, optical retention and easy fluidity.
3, barium sulfate for powder coating can improve its gloss, fluidity, filling and compatibility with various pigments.
4. In the application of pigments, barium sulfate is used as a gasket for titanium dioxide and pigments in plastics, which can reduce the addition of pigments and save about 10% of the cost. Light reflection can maintain the integrity of pigments.
5. The titanium dioxide or pigment particles in the coating are usually not completely dispersed, and the particles will gather together to cause the scattering rate and hiding power to decrease, making these titanium dioxide agglomerates a great waste. The average particle size of MICROBARI submicron barium sulfate is about 1.3um, which is about twice that of titanium dioxide particles (average particle size is about 0.3μm). When MICROBARI submicron barium sulfate is added, the mesoscopic microcrystal particles can separate the agglomerated titanium dioxide particles. Each submicron barium sulfate particle has sufficient surface energy, and 4-10 titanium dioxide particles can be adsorbed around it, effectively realizing spatial separation, thus maximizing the scattering rate of each titanium dioxide particle. The MICROBARI sub-micron barium sulfate as a body pigment used in thin spray powder coatings, electrophoretic coatings, high gloss coatings and other high-end products, can make your products more competitive in technology and price.
6, barium sulfate in silicone rubber, mixed rubber, as a filler, can increase the hardness of silicone rubber, reduce its elasticity.
In the application of printing inks, barium sulfate's low abrasion, high gloss and color stability, low cohesion, combined with its easy fluidity, make it suitable for high-quality printing inks.
8. Barium sulfate is used in the production of paper coatings. The introduction can increase its gloss and fluidity, such as art paper and medium-white transparent color paper. The titanium dioxide part can be replaced by double barium sulfate without losing its gloss.
9, barium sulfate is particularly suitable for elastomers, which does not contain any heavy metal pollution or rubber gas, so it is particularly suitable for food and drugs, and can provide its stability and anti-aging performance.
10. In the application of thermoplastics, the thermal conductivity and fluidity of barium sulfate can reduce the injection molding time, and barium sulfate can be used as a nucleating agent to improve its strength and thermal stability.