Ultrafine talcum powder and polypropylene filling color masterbatch and preparation method thereof

Abstract

The invention relates to ultrafine talcum powder and polypropylene filling color masterbatch and a preparation method thereof. The ultrafine talcum powder and polypropylene filling color masterbatch comprises the following raw materials by weight percent: 0.05-5% of pigment, 50-80% of ultrafine talcum powder, 10-40% of polypropylene, 2-10% of fatty glyceride and 0.5-2% of porous inorganic silicon. The production efficiency and the dispersion performance of the ultrafine talcum powder and polypropylene filling color masterbatch are improved, and the ultrafine talcum powder and polypropylene filling color masterbatch is applied to a polypropylene product to endow the product with high luster degree, good heat resistance and characteristics of no smell and dust absorption prevention.

Description

technical field [0001] The invention relates to the technical field of plastic-filled color masterbatches, in particular to an ultrafine talcum powder polypropylene-filled color masterbatch and a preparation method thereof. Background technique [0002] Ultrafine talc powder is a cheap inorganic filler commonly used in the plastics industry. It can effectively improve the rigidity, modulus and dimensional stability of the material, and greatly reduce the cost; therefore, ultrafine talc powder is used in plastic modification. widely used in the industry. However, the bulk density of ultrafine talc powder is small, and it is easy to generate dust during the production process of plastic modification, which pollutes the production workshop and seriously affects the health of production employees. In addition, ultra-fine talc powder has a large specific surface area and high surface energy, and it is easy to "agglomerate" the particles, resulting in clogging the filter screen a...

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Problems solved by technology

The invention patent with the patent number CN101955604A discloses "a polyolefin-based nanoscale ultra-fine talcum powder functional masterbatch and its manufacturing method and equipment". The composition and weight percentage of the filled masterbatch are: polyolefin plastic 100 wt. 300-500 parts by weight of nano-scale ultrafine talc powder, 0.5-2.5 parts by weight of anti-thermal oxygen aging stabilizer and 0.2-1.2 parts by weight of surface-modified coupling agent; Talc powder master batch and its preparation method", the composition and weight percentage of the filler master batch are: ultrafine talc powder 75-84%, ethylene octene copolymer 15-25%, antioxidant 0.3-0.6%, Lubricant 0.3-0.6%; in the above two patents, banburying is first used, then extruded by a screw extruder, and finally the manufacturing method is formed by hot-cutting granulation on the die surface; the production is produced by an internal mixer, and the material is seriously flying , causing environmental pollution and the automation of the entire production line is low, the labor intensity of employees is high, and the production efficiency is low

The Chinese invention patent with the patent number CN1966562A discloses a filler masterbatch for polypropylene wire drawing and its preparation method. In this paper, a high-speed mixer plus a twin-screw extruder is used for the production method, but since the bulk density of calcium carbonate is ultrafine talc Three times the bulk density of the powder, therefore, the coating problem of this type of powder can basically be solved by twin-screw mixing

Because this method requires the materials to be stirred at high speed to 100°C to 130°C first, and the temperature of the high-speed mixer is difficult to control, some materials with a melting point of about 100°C among the raw materials of the product have the risk of agglomeration, which is harmful to the normal operation of the high-speed mixer. Unloading has a serious impact

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