The invention discloses a talcum
powder-
polypropylene filled master batch. The talcum
powder-
polypropylene filled master batch comprises the following components in percentage by weight: 75-85% of talcum powders, 10-15% of
polypropylene materials, 0.5-0.7% of antioxidants and 1-5% of
processing agents. Production equipment of the talcum
powder-polypropylene filled master batch comprises a high-speed mixer, a feeding
machine, a double-screw
extrusion machine, a
caterpillar track conveying and cooling device and a hob granulator, wherein the high-speed mixer is arranged above the feeding
machine, a material outlet of the feeding machine is connected with a material inlet of the double-screw
extrusion machine, a material outlet of the double-screw
extrusion machine is connected with a material inlet of the
caterpillar track conveying and cooling device, and a material outlet of the
caterpillar track conveying and cooling device is connected with a material inlet of the hob granulator. Compared with the technology that an internal mixer is used for producing the superfine talcum powder master batch, the production equipment provided by the invention has the following advantages: the proper
raw material formula, the forcing of the feeding machine, the double-screw extrusion with a deep spiral groove and a caterpillar track conveying and cooling
granulation mode are adopted, so that the low-stacking-density powder can be fed into the double-screw extrusion machine with high efficiency; as the talcum powder-polypropylene filled master batch contains high inorganic powder content and the adopted spiral groove is deep, the talcum powder-polypropylene filled master batch can be conveyed conveniently; the plasticized dispersing efficiency of the talcum powder-polypropylene filled master batch is high; and the talcum powder-polypropylene filled master batch is not easy to break when adopting a water-cooling brace to granulate; and the normal
granulation can be ensured.