Barium sulfate powder coating is a new solvent-free with 100% solid powder coating. It has two broad categories: thermoplastic powder coatings and thermosetting powder coatings. Paint is formed by the special resin, pigments and fillers, curing agents and other additives, in a certain proportion of mixing, and then hot extrusion and crushing and other processes prepared. They are at room temperature with stable storage, by electrostatic spraying or fluidized bed dip coating, and then heated baking melt curing, so that the formation of flat and bright permanent coating, to achieve the purpose of decoration and corrosion.
The characteristics of barium sulfate powder coating:
The product is non-toxic, solvent-free and non-volatile toxic substances, so no poisoning, no fire, no "three wastes" emissions and other pollution problems, in full compliance with national environmental law requirementsPART 02
High utilization of raw materials, over-spray powder can be recycled, the utilization rate can reach 99% or morePART 03
After the coating pretreatment, one-time construction, without primer, you can get a sufficient thickness of the coating, easy to achieve automated operation, high production efficiency, and can reduce costsPART 04
Coating density, adhesion, impact strength and toughness are good, high corners coverage, with excellent resistance to chemical corrosion and electrical insulation properties.PART 05
Powder coating easy storage, transportation safety and convenience.
Barium sulfate is the standard for measuring whiteness; barium carbonate is an important raw material for optical glass, which introduces BaO into the glass, thereby increasing the refractive index of the glass and improving other optical properties; used in ceramics to prepare glaze; Barium is an agricultural pesticide; barium nitrate used in fireworks and glass industry; barium permanganate is a green pigment. Precipitated barium sulfate is increasingly equipped with the characteristics of additives. In the production of special precipitation of barium sulfate, the key technologies such as precipitation, physical or chemical secondary treatment are adjusted to achieve the desired, from about a few tenths of a micron to a nanoparticle size distribution, to obtain an inorganic coating or Decentralized.
Barium sulfate in the soluble barium salt such as barium chloride added barium sulfate solution, the resulting precipitate washed, filtered, dried, crushed, sieved into a product. Precipitated barium sulfate is fine and delicate, with high whiteness, acid, alkali, light, heat and chemical properties.Precipitated barium sulfate density of 4.35 g / cm3, oil absorption of 10 to 15%, the refractive index of 1.64. Made of powder coating film high gloss, good leveling, powder coating is currently the largest amount of varieties. Precipitated barium sulfate particle size is small and uniform, good fluidity, generally used for more high-grade powder coating products.
Barite powder is also called natural barium sulfate, natural barite ore by crushing, washing, drying, screening and become a product. The purity of natural products is relatively low, between 85 ~ 95%, the density is 4.47 g / cm3, the refractive index is 1.64, the oil absorption is 6 ~ 12%, the particle size distribution is wide and can be used for low cost powder coating.There are also powder manufacturers with higher fineness of barium sulfate instead of precipitated barium sulfate for powder coatings in the natural barium sulfate if the particle size of about 3000 mesh, but also can replace part of the precipitation of barium sulfate. So that the powder coating to achieve the requirements of the various indicators, but also greatly reduce the cost of raw materials.
1. Impurity removal process of soluble sulfate, barium carbonate and sulfideWeighing 0.5000g sample in 50mL High type beaker, add $number hydrochloric acid solution 10mL, after the low temperature furnace on the micro-boiling 30min, and then add 10% nitric acid solution 10mL to continue to micro-boiling after the 20min, slightly cold after the filter with slow quantitative filter, collect precipitation.
2.Sodium carbonate-zinc oxide semi-melting process to decompose specimenTransfer the above-mentioned precipitation and filter paper to 30mL porcelain crucible, and after the low temperature is fully ashing in muffle furnace, then increase the temperature to 700 ℃, add 5 grams of sodium carbonate-zinc oxide ($number) mixed solvents, stir evenly, and then cover 2 grams of mixed solvents, into muffle furnace, starting from the low-temperature temperature to 800 ℃, and keep burning 1hour.
3.leaching process of sulfate root in semi-molten matterTake the crucible out slightly cooler, place in 250mL beaker, add 100mL hot water immersion, wash out the crucible with hot 20% sodium carbonate solution, heat with slow filter paper in 500 ml beaker, then wash and precipitate 6-8 times with hot 20g/l sodium carbonate solution. The funnel is deposited together with the filter paper and transferred to the original beaker for standby
4.The precipitation and determination process of sulfate rootWith 50% hydrochloric acid solution and to red and excess 3mL, water to regulate the volume of filtrate to 300mL, boiling to remove carbon dioxide, add 100G/L barium chloride solution 25 ml, evenly stirring 1min after continuing to boil for several minutes, and heat preservation for half an hour, and then static overnight. Filter the precipitation with slow ration filter paper, move it into the 30mL porcelain crucible which is burnt to constant weight before low temperature ashing in 800 ℃ and then weigh after burning to constant weight. The total content of sulfur in barium sulfate, strontium sulfate, lead sulfate and silver sulfate
5.The removal process of sulphate interference of strontium, lead and silverA 50mL ($number) Hydrochloric acid solution was added to the precipitation collected during leaching of the semi-molten matter, in the low temperature electric furnace, the leachate is transferred to 250mL capacity bottle, and the content of SR, Pb and AG in the solution is detected by icp-oes and converted into each of strontium sulfate, the amount of sulphur in the presence of lead sulfate and silver sulfate, the total content of sulphur in the previous link is deducted from the sulphur content measured in this section, then the sulphur content of barium sulfate in barite and the amount of barium sulfate.
PLASTIC INDUSTRYBarites mineral is widely used in plastic industry. It is used as the filling of plastic ABC to create beautiful colorful plastics. It is also very effective in improving the stiffness, intensity and abrasive strength to it thereby making it stronger in strength and beautiful in appearance.
PAPER-MAKING INDUSTRYThis mineral is also used in the papermaking industry. Because of its clean whiteness, the high-refined barites powder is also used for filling white paperboards and coat paper with it. This improves improve the whiteness of the product and also increases the percentage of coverage thereby giving it a clean white look.
PAINTING IDUSTRYBarytes is a wonderful replacement to expensive materials used in dope and painting. It is an amazing replacement to basofor, crypton, titanium dioxide, activity and monox which are used for filling. It is very effective in controlling the viscosity of the paint. It is also very effective in increasing the stability of the paint and adding more brightness to the paint. It has a clean whiteness which makes it very effective as an extender for primers. It is highly effective in providing chemical resistance to the walls and smoothness to the undercoats thereby promising beautiful and smooth walls. It is also used as heavy inert filler. It is insoluble in water, has high refractive index, has high resistance to acids and alkalies and high bulk density which makes it all the more useful in the paint industry.
RUBBER INDUSTRYIf you are looking for saving costs in the rubber industry then you can always use the barites mineral of less than 500 mesh for filling the rubber products. This is very effective in making the product water proof. It also improves the intensity of the product and makes it acid proof and alkali proof. This increases the life of the product thereby making it more durable.
PHARMACEUTICAL INDUSTRYBarytes is also used in pharmaceutical industry. It is used as barium meal material for the intestines and stomach reflections. Another important usage of barites in pharmaceutical industry includes the usage for filling of plaster and dope in order to extend the time limit of the plaster. It is also used in diagnostic medical tests. Barites are also very effective in blocking x-rays and gamma-rays emission.
COSMETICS INDUSTRYBarytes is very popular in the cosmetics industry because of its gentle and mild effect on the skin. It is a wonderful substitute to titanium dioxide. It is widely used in the cosmetics. These are different industrial applications of barytes mineral. Surely it is widely used in different industries for different reasons, with each one of them mentioned above。
The effect of sand substitution by barite powder on concrete has been examined.
1.Limestone skeleton should be conserved to reduce the compressive strength loss.
2.The use of barite induces a reduction of elasticity modulus around 20%.
3.Replacing sand by barite reduces the tensile strength of concrete to half.
4.Barite powder does not affect the concrete swelling but reduces shrinkage.
5.Barite concrete is a kind of density is larger, the x-ray shielding ability of concreteBarite (BaSO4) is a mineral commonly used as aggregates to produce heavyweight concrete. The applications concern radiations shielding in hospitals and nuclear facilities. In this work, the use of Tunisian barite powder form in the composition of concrete was investigated, substituting sand partially or totally. Investigation was carried out on five groups of concrete samples with density (2.31–2.48) corresponding to the mass of barite’s percentages ranging from 0% to 25%. The effect of barite ratio on the physical and mechanical properties such as compressive strength, tensile strength, density, shrinkage, swelling, and elastic modulus have been measured and compared to ordinary concrete as a control. Although the tensile strength has been reduced up to 50%, it has been shown that is possible to produce a barite-based concrete with a minor effect on the main mechanical parameters: the compressive strength at 28 days has decreased only by 10% and the elastic modulus at one year of age by 20%. This was possible by conserving the initial limestone skeleton and using barite in size (0–100 μm). The new designed mixture containing barite in powder form can be used for structural concrete.
What is barium sulfate? Barium sulfate,as X-ray double contrast agent.The high density gastrointestinal contrast agent can be made into different proportional suspensions, but it is usually used with low density gas to achieve double contrast. Commonly used in digestive tract radiography, according to domestic users reported that the thickness of barium sulfate, better than fine and uniform barium sulfate. For intestinal fistula formation and prone to perforation of certain intestinal diseases, such as appendicitis, diverticulum, ulcerative enteritis, parasitic infections. Barium sulfate be used as filler in the industrial production of plastic. Barium sulfate unique excellent performance, so that it is widely used in plastic products and as one of the new functional modification materials. Barium sulfate has the characteristics of improving the chemical corrosion resistance, heat tolerance and product appearance of the plastic products. Barium sulfate can be used for pp. Abs. Pa. Pet and other resin production of home appliances shell, mechanical parts, automotive parts, air-conditioning panels, electric kettle shell and so on. Barium sulfate can also increase the proportion of plastic products, improve the wear resistance of plastics, anti-aging, improve the luminous effect, and expand the application of plastic products. The characteristics of barium sulfate in plastics The natural ore (barite) is made of barite powder (also called heavy barium sulfate) after crushing, washing and drying, and is white or gray powder, with a density of 4.3~4.6g/cm3. Barite heated to 1100 Shan reduction to produce soluble barium sulfide, and then the role of sulfuric acid or sodium sulfate precipitated barium sulfate (also known as light barium sulfate), fine particle size, whiteness can up to 92 degrees above. Barium sulfate has many characteristics with large proportion, good luster, good thermal stability and excellent processing performance and so on.