Polymeric compounds are the result of combining polymer and necessary additives to strengthen their properties and prepare them for use in various industries. Polymer compounds are raw materials along with the required additives (pre-combined) to produce the final product.
Polypropylene-talc compound is one of the widely used compounds in the polymer industry. The addition of talc to polypropylene causes a significant increase in stiffness and improves the performance of the part at high temperatures. Among its other advantages are the reduction of shrinkage in the production process and possibly producing parts with low thickness.
Some applications of these compounds are:
Under-the-hood automotive parts ( High-temperature environments)
Home Appliances
Packing
Thermoforming includes microwaveable products
Tacochem
The main reason for mixing polypropylene with talc is to increase its elastic modulus. The degree of increase in stiffness depends on:
The amount of talc powder in the mixture
The aspect ratio of talc powder
The mesh of the talc powder
Also, talc acts as a nucleating agent in polypropylene and increases its crystallization rate. In the presence of talc, crystallization occurs at a relatively higher temperature, and the impact resistance increases. This increase in impact resistance is due to the increase in polypropylene’s crystallinity, and the talc’s mechanical properties do not affect it. The presence of nucleating agents increases the elastic modulus and, consequently, the stiffness in polypropylene. Of course, it should be noted that adding a suitable amount of talc powder increases the impact resistance of polypropylene.
Tacochem is a group of polypropylene-talc mixtures with different talc content (10-40%) in the form of polypropylene homopolymer produced for use in injection parts.
The difference in the amount of talc in the mixture allows this material to be used in a wide range of general and special applications, such as speaker frames, pump housings, fan blades, and car engine parts.