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Yuan Lei's Little Knowledge | Take You to Know Nano Barium Sulfate

Release time:

2024-01-29 09:34

Nano barium sulfate has the advantages of good stability, acid and alkali resistance, moderate hardness, high specific gravity, high whiteness, and can absorb harmful rays. It is a material with environmental protection function, so it is widely used in various coatings, medium and high-grade inks, pharmaceutical synthesis Chemical industry, rubber, paper, ceramics, cosmetics and other fields.

 

 

Scope of application

1. Plastic industry

Nano barium sulfate can be added to the polymer (such as polyethylene, polypropylene, polylactic acid, etc.) to obtain high strength, high toughness composite materials. For most polymer composite materials, with the increasing amount of modifier, the strength and toughness of the composite material will increase first and then decrease, and the small amount of modifier will increase the defect of the connection interface between nano-barium sulfate and polymer, resulting in the reduction of the mechanical properties of the composite material. In addition to the influence of the modifier, the amount of barium sulfate is also a certain factor. When the content of nano barium sulfate is too high, it is due to the agglomeration phenomenon in the composite material and the addition of inorganic particles to increase the defects of the matrix, making the composite material more prone to fracture, thus making the mechanical properties of the composite material worse. Therefore, the addition of barium sulfate must be carried out within the scope of its appropriate mechanical properties.

 

2. Coatings industry

Barium sulfate is widely used as an extender pigment in coatings, which plays an important role in improving the thickness, wear resistance, water resistance, heat resistance, surface hardness and impact resistance of the coating film. Because of its low oil absorption and high filling capacity, it can reduce the cost of coatings and replace 10% ~ 25% titanium dioxide in water-based coatings. The results show that the whiteness is improved and the hiding power is not decreased.

The characteristics of ultra-fine barium sulfate for coatings are: fine particle size and narrow particle size distribution; Dispersion in resin liquid has transparency; Good dispersion in coating base material; Cooperating with organic coloring pigments has the function of dispersing additives; Can improve physical properties.

3. Paper industry

Barium sulfate has the advantages of good physical and chemical stability, moderate hardness, high whiteness, and can absorb harmful rays, so it is often used in the paper industry.

 

4. Chemical fiber industry

Nano-barium sulfate has good nano-effect, while viscose fiber is antistatic, easy to dye, good moisture absorption and easy to textile processing. Nano-barium sulfate/regenerated cellulose blend fiber made of the two as raw materials is a new type of composite fiber, which can maintain the unique properties of each component, and can make up for the shortcomings of a single material through the "synergy" between each other, showing the new properties of composite materials.

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