Increased Density

Barium sulfate is significantly denser than most plastic resins. When incorporated into a plastic formulation, it increases the overall density of the material. Higher density often correlates with increased rigidity and stiffness.

Particle Size and Distribution

The particle size and distribution of barium sulfate fillers can be controlled to achieve the desired level of reinforcement in the plastic matrix. Smaller particle sizes and uniform distribution can lead to better reinforcement and improved rigidity.

Reduced Shrinkage

Barium sulfate fillers can help mitigate the shrinkage that occurs during the cooling phase of plastic processing. By minimizing shrinkage, the dimensional stability of the plastic is improved, leading to enhanced rigidity.


Abrasive Properties

Barium sulfate particles are hard and abrasive, which means they can act as micro-fillers within the plastic matrix. These particles can create a reinforcing network that strengthens the surface of the plastic, increasing its hardness.

Enhanced Wear Resistance

The presence of barium sulfate fillers can improve the wear resistance of plastics. When incorporated into the polymer matrix, these fillers create a barrier against abrasion and friction, reducing surface wear and maintaining hardness over time.

Improved Scratch Resistance

The addition of barium sulfate can enhance the scratch resistance of plastics, making the surface more resistant to damage from external factors such as handling, cleaning, or environmental exposure.

Chemical Inertness

Barium sulfate is chemically inert, which means it does not react with the plastic matrix. This inertness ensures stability in the final plastic product, maintaining surface hardness even in challenging environments.