Talc masterbatch is a kind of plastic modified filler. Its main contents are talc powder, composed of granules mixed with polymer or other carrier. It is mainly used for the improvement of functions such as rubber and plastic resin, and can significantly improve the stiffness, high temperature creep resistance, heat resistance and other functions of the filler. Compared with talcum powder, talc masterbatch has a good processing function and improves the problem of talcum powder dispersion.

Talc is an aqueous, silicate deposit with a layered structure. Chemical formula: Mg3(Si4O10)(OH)2. Its chemical composition: MgO is 31.8%, SiO2 is 63.37%, H2O is 4.7%, often contains a small amount of Fe, A1 and other elements. The density of talc is 2.7~2.8g/cm, and the hardness is the smallest one in the mineral deposit. The Mohs hardness is 1, and it has a soft and smooth feeling. Its color is white, gray green, milk white, light red, light blue, light gray, etc., with pearl or fat luster. The association water can be lost at 380 to 500 ° C, and the water of crystallization is lost at 800 ° C or higher. Talc is slightly alkaline in water and has a pH of 9.0 to 9.5.

The talc has a layered structure, and the adjacent two layers are combined by a weak van der Waals force. In the case of external force effects, slippage or detachment between two adjacent layers is highly prone to occur. Therefore, the basic shape of the talc particle structure is flake or scale.

The flaky structure of talc powder has greatly improved some functions of talc-filler plastic. Some people regard talc as a reinforcing filler. Primarily talc is able to improve the stiffness of the filling material and the ability to resist creep at high temperatures. When the talcum powder particles are placed along the direction of material movement during processing, according to the principle of minimum resistance, the arrangement is basically in the form of a sheet, and the small pieces are connected into a large piece. Therefore, the data stiffness can be significantly improved in a specific direction. Secondly, talc powder can significantly improve the heat resistance of the filling material. The heat distortion temperature used to measure the heat resistance of the data refers to the temperature at which the sample bends to a certain extent under the load effect, and the flaky talc powder can improve the heat distortion temperature of the data in a specific direction.

In the silicon-containing guess, the talcum powder is the cheapest and can reduce costs.

Qingyun Xinyang New Materials Co., Ltd.

Mr. Zhou

Email: sales1@xy-masterbatch.com

Tel: +86-0531-88995327