Application and Research Progress of Talc in Reinforced Modification of Plastics

The reinforcing and modifying effect of talc originates from its lamellar structure, and it is mainly used for the reinforcement and modification of polypropylene plastics in the automotive and home appliance industries.

The “four properties” of talc—purity, whiteness, fineness, and lamellarity—are the key factors determining the modification performance.

Ultrafine talc powder is increasingly applied in thin-walled, high-stiffness modified plastic products.

In the future, the unit consumption of talc will decrease while product performance will continuously improve, achieving higher efficiency with less dosage.

There are two ways to enhance the reinforcing and modifying effect: improving fineness and increasing the aspect ratio.

The sand milling process can not only further increase fineness but also better preserve the lamellar structure and aspect ratio of talc, making it the development direction for the processing of high-performance talc powders.