Yuan Lei's Little Knowledge | Advantages of Barium Sulfate

Release time:

2024-01-29 09:34

The physical and chemical properties of barium sulfate: barium sulfate is white or off-white crystalline powder, is an important barium-containing mineral, with strong chemical inertness, good stability, acid and alkali resistance, high density, moderate hardness, high specific gravity, high whiteness, can absorb harmful rays (X-rays and Y-rays) and other advantages. It has the luster of glass, non-magnetic and non-toxic. And environmentally friendly materials, so widely used in a variety of coatings, high-grade ink, rubber, paper, ceramics and other fields. Refined barium sulfate is also used in high-grade paint, engineering plastics (home appliance shell, building materials plastic), high-grade insulation rubber, rubber products, battery cathode expansion rod, can also be used for ceramics, enamel glaze materials.

Precipitated barium sulfate is used as filler, brightening agent and weighting agent in rubber, plastic, paper making, paint, ink, coating and other industries. Barium sulfate for interior and exterior wall decoration can effectively shield X-ray and Y-ray, can effectively prevent the leakage of blocking ray.

Barium sulfate acts on titanium dioxide and pigments in the plastic gasket can reduce the amount of pigment added and save about 10% of the cost.

Barium sulfate (about 25%) is applied to PP surface like ABS, and does not affect the existing characteristics of PPV, providing gloss and high hardness surface.

Barium sulfate can reach 80% of its weight filling rate, used in drainage pipes, speakers, sound can effectively isolate noise, noise, barium sulfate used in curtains can increase the weight. For household electrical appliances shell can improve the luster, good hue, surface scratch resistance, good size stability and other advantages.



Barium sulfate in the coating is used as a body pigment in the coating, to improve the coating thickness, wear resistance, water resistance, heat resistance, surface hardness, impact resistance plays a very important role. In addition, barium sulfate has high reflectivity in the wavelength range of 300-400 microns, which can protect the paint film from light aging, and is an effective and inexpensive white inorganic light stabilizer. Because of its low oil absorption and high filling volume, it can reduce the cost of coatings and can be used for water-based coatings, primers, intermediate paint coatings, oil-based coatings, etc. Using it to replace 10%-25% of titanium dioxide in water-based coatings, the whiteness increased the hiding rate did not decrease.

Lacquer and Thick Paste CoatingsBarium sulfate has high filling property and can be applied to all coating series, such as primer, thick paste coating and other types. Its specific surface area, particle size fraction and easy fluidity make barium sulfate have low abrasion property during processing. Barium sulfate is recommended to be used for automatic primer surface layer, and even maintain good uniformity and smoothness when filling high.

TopcoatBarium sulfate is superior to most other fillers, especially in chemical resistance coating. It is inert, insoluble in water, acid, alkali and organic intermediary, excellent gloss and particle fineness, which can protect the topcoat from long-term exposure. Barium sulfate is recommended for topcoat, which can increase surface hardness and color stability.

latex paintDue to weight, barium sulfate can only be used for latex paint, mainly for high luminosity and silk grain paint, and is known as "acid-resistant" latex paint, even when exposed, it also has acid resistance. Barium sulfate's easy dispersion, optical activity preservation and easy retention can increase its chemical properties, and barium sulfate can be used for the same high-gloss paint and latex paint.

Wood Products and PaintBarium sulfate has the characteristics of low cohesion, low light dispersion and fine particle holding, especially suitable for pigment topcoat, varnish, spray paint, etc. According to the study of barium sulfate with chemical resistance and weather resistance.

powder coatingIn powder coatings, barium sulfate can improve its gloss, fluidity, filling and compatibility with various pigments.

Barium sulfate, used, paint, filled, with, ray, pigment, application, gloss

Yuan Lei's Little Knowledge | Performance Requirements and Types of Fillers for Coatings


Fillers in coatings are usually white or slightly colored pigments with a refractive index less than 1.7. It has the basic physical and chemical properties of pigments used in coatings, but due to its refractive index being similar to the film-forming material, it is transparent in coatings and does not have the coloring and covering power of coloring pigments. It is an indispensable pigment in coatings.

Yuan Lei's Little Knowledge | Application Effects of Different Mineral Powder Materials in Coatings


In architectural coatings, commonly used mineral materials include barium sulfate, calcium carbonate, kaolin, mica powder, talc powder, quartz powder, silica micro powder, transparent powder, glass powder, wollastonite powder, etc. Reasonable application of various mineral materials can effectively improve or enhance the performance of coatings. Let's take a look at the application of different mineral materials in coatings.

Yuan Lei's Little Knowledge | Characteristics of Mineral Materials


Mineral materials refer to the material products obtained by processing and transforming natural minerals (mainly non-metallic minerals) or rocks as the main raw materials, or minerals or rocks that can be directly used as materials and aim to utilize their main physical and chemical properties. This meaning mainly includes the following four aspects: first, natural minerals and rocks that can be directly utilized or processed to be utilized; Secondly, finished or semi-finished materials made mainly from natural non-metallic minerals and rocks through physical and chemical reactions; Thirdly, artificially synthesized minerals or rocks; Fourthly, the direct utilization targets of these materials are mainly their own physical or chemical properties, not limited to individual chemical elements.