Modified barium sulfate has eight advantages in the plastics industry!

Barium sulfate has a wide range of applications due to its unique and excellent properties, and has become one of the new functional modification materials for plastic products. Barium sulfate has the characteristics of improving the chemical corrosion resistance and heat resistance of plastic products and improving the appearance of products. Barium sulfate can be used in home appliance shells, mechanical parts, automobile parts, air conditioning panels, electric kettle shells, etc. produced from resins such as PP. ABS. PA. PET. Barium sulfate can also increase the specific gravity of plastic products, improve the wear resistance and aging resistance of plastics, improve the brightening effect, etc., and expand the application field of plastic products.

Modified barium sulfate usually has the following eight advantages when used in the plastics industry:

1. Reduce costs

Fillers are usually cheaper than resins, so adding fillers can greatly reduce the cost of plastics and has significant economic benefits. This is also the main reason why plastic filling modification is widely used.

2. Improve the heat resistance of plastics

Generally, plastics have low heat resistance, such as ABS, whose long-term use temperature is only about 60°C, while most fillers are inorganic substances with high heat resistance, so these fillers can significantly improve the heat resistance of plastics after being added to plastics. For example, when PP is not filled, its heat deformation temperature is about 110°C, but after filling with 30% talcum powder or barium sulfate, its heat deformation temperature can be increased to more than 130°C.

3. Improve the rigidity of plastics

Generally, plastics have poor rigidity. For example, the flexural modulus of pure PP is about 1000MPa, which is far from meeting the application requirements of some components. After adding 30% barium sulfate or talcum powder, its flexural modulus can reach more than 2000MPa. It can be seen that talcum powder has a significant rigidity-enhancing effect.

4. Improve the molding processability of plastics

Some fillers can improve the processability of plastics, such as barium sulfate, glass beads, etc., which can increase the fluidity of the resin and thus improve its processability.

5. Improve the dimensional stability of plastic products

Some plastics shrink greatly during crystallization, which results in a large shrinkage rate for their products. They are easily deformed after coming out of the mold and their dimensions are unstable. However, adding fillers can greatly reduce the shrinkage rate of the plastic and further improve the dimensional stability of plastic products and components.

6. Improve the hardness of plastic surface

Generally, plastic has a low hardness and is easily scratched, which affects its appearance, and then affects its surface function and decorativeness. The hardness of inorganic fillers is higher than that of plastics. After adding inorganic fillers, the surface hardness of plastics can be greatly improved.

7. Improve plastic strength

The tensile strength of general-purpose plastics is not high. After adding inorganic fillers, within the appropriate range of filling amount, the tensile strength and flexural strength of the plastics can be improved, thereby improving the engineering applicability of the plastics.

8. Increase the added value of plastic products

Some fillers can give plastics some functions. For example, adding barium sulfate, talcum powder and calcium carbonate to PP can improve the antistatic and printing properties of PP; adding hollow glass microspheres to plastics can improve the thermal insulation function of plastics; adding metal particles to plastics can enhance the thermal and electrical conductivity of plastics.