Plastic-grade talcum powder is particularly valued in the industrial use of plastics for their toughness and wear resistance. Plastics are generally hard, resembling horn, with good wear resistance and high dimensional stability. These properties can be further enhanced by fillers or reinforcing agents. Plastic 66 boasts high hardness, stiffness, wear resistance, and heat deflection temperature among plastics; Plastic 6 is renowned for its high toughness; Plastic 610 has lower water absorption, thus improving its dimensional stability; and Plastic 11 exhibits high impact strength among plastics.
In various fillers, plastic-grade talc with layered structure enhances the inherent good properties of plastics, and improving wear resistance is crucial. Compared to unfilled modified plastics, which have a lower elastic modulus, lower tensile and creep strength, and mechanical properties that are significantly temperature-dependent, plastics contain hydrophilic groups with high water absorption rates. This leads to swelling and deformation of the products when in use, as well as incomplete crystallization during processing and cooling, resulting in ongoing crystallization during use, which causes deformation and even cracking. The aforementioned shortcomings of plastics can be greatly improved by adding ultra-fine plastic-grade talc masterbatch. Plastic-grade talc acts as a nucleating agent, increasing the crystallization rate and crystallinity of plastics. Therefore, it particularly improves plastic toughness, mechanical strength, hardness, thermal stability, dimensional stability, and product surface quality and deformation behavior. It also has a positive impact on moisture absorption, electrical properties, and chemical characteristics.