How does barium sulfate control the transparency of plastics

Barium sulfate used in titanium dioxide and pigment plastic gaskets can reduce the amount of pigment added and can save about 10% of the cost. The application of barium sulfate (about 25%) to PP can make the surface of PP like ABS, without affecting the existing characteristics of PP, providing a high gloss and high hardness surface.

Barium sulfate can reach 80% of its weight filling rate, applied to drainage pipes, speakers, speakers can effectively isolate noise, noise, applied to curtains can increase weight for household appliances shell can provide high gloss, good color, scratch resistance, good dimensional stability and other advantages.

Barium sulfate itself is a non-toxic and harmless inert substance, usually people eat gastroscopy barium meal is the same type of substance used, because it is insoluble in water and lipids, so it will not be absorbed by the gastrointestinal mucosa, so basically non-toxic to the human body. At the same time, it is widely used in the paint industry, such as automotive paint brighter reason is also the effect of barium sulfate, now barium sulfate in the form of particle production, the application of it in the blowing film industry to create greater value.

Barium sulfate is not only non-toxic and harmless, but it contains the following functions:
1, high transparency, transparency is much higher than the traditional filling material, in the field of transparency in the relatively small impact, barium sulfate itself determines its good luster, because it has good reflective property, dispersion is also very good;
2, increase the amount of extrusion per unit time to improve the production efficiency of the protective film;
3, in terms of mechanics, the addition of barium sulfate not only does not affect the transverse force, longitudinal tension, but can improve the mechanical properties, for example: the original plastic bag can hold 10 kilograms, after adding barium sulfate can hold 11 to 12 kilograms of weight;
4, reduce the cost, because compared with raw materials, there is still a certain difference in which;
5, non-corrosive, no damage to the screw, die head.

When adding barium sulfate, the high pressure is between 150-170 degrees, it is recommended to add 5%-10%, the transparency is relatively high, the low pressure is between 150-200 degrees, the low pressure is recommended to add 15%-20%, and the quality requirements of the film should be seen in the specific operation. The physical properties of barium sulfate are presented in the form of a parabola, with a highest point, and the amount added to the blown film is generally 30%-35%, which has reached the apex, and beyond this point, the performance of all aspects will decline, affecting the quality of the film.