Adding an appropriate amount of talcum powder to plastic products can bring certain changes to the molding shrinkage rate, plastic hardness, flexural modulus, tensile strength, impact strength, and heat distortion temperature of plastics, as follows:

Adding an appropriate amount of talcum powder to plastic products can change the surface properties and reduce the overall material molding shrinkage rate. Talcum powder can also act as a nucleating agent for PP, which can affect the structure and function of PP, prevent the formation of large spherulites in PP, and at the same time reduce the crystallinity.

Adding talcum powder to polyethylene and polypropylene plastics can effectively improve the surface hardness and surface scratch resistance of products.

The flexural modulus is what we usually call rigidity. It is a relatively important indicator for plastic products in use and is more important for engineering plastic products. The white flake-structured product, when added to any kind of plastic, can increase the flexural modulus.

The improvement of the tensile strength of plastic materials by products is relatively limited. Only when the talc content is within a certain range can the tensile strength of plastics be increased. If the talc content continues to increase, the tensile strength will decrease.

For the impact strength of plastic materials, the fineness of various mineral additives has a relatively large impact on the impact toughness. We need that when the content is unchanged, the finer the fineness, the better the toughness of the material.

Talcum powder has a relatively obvious influence on the heat distortion temperature of plastic materials. It will increase the heat distortion temperature of various plastics and make the heat resistance of plastics greater.

The influence on the molding process of plastic materials is that it will improve the fluidity and molding shrinkage rate of plastic materials, make the product more stable, and effectively improve the product quality.