Low-odor masterbatch and preparation method thereof

Abstract

The invention discloses a low-odor masterbatch and a preparation method thereof, wherein the raw materials comprise 20-30% of polypropylene, 70-80% of an inorganic filler, 0.3-1.5% of an antioxidant,0.6-1% of a lubricant, 0.3-5% of an odor treatment agent, and 1-5% of a modifier. The preparation method comprises: preparing polypropylene, an inorganic filler, an antioxidant and a lubricant according to a certain ratio, stirring for 5-10 min in a high speed stirrer, completely mixing, pouring the mixing material into a mixer when the temperature is 120-130 DEG C, mixing, adding an odor treatment agent and a modifier when the temperature of the mixing material in the mixer is 150-190 DEG C, pouring the obtained mixture into a twin-screw extruder when the temperature is 160-210 DEG C, and extruding to prepare the product. According to the present invention, with the low-odor masterbatch, the easily volatile organic matters in polypropylene plastic can be effectively treated without the changing of the properties of the plastic product, such that the plastic product achieves the desired low odor level requirements.

Description

technical field [0001] The invention relates to a masterbatch and a preparation method thereof, in particular to a low-odor masterbatch and a preparation method thereof. Background technique [0002] Polypropylene plastic products are more and more used in automobile manufacturing, such as interior materials, bumpers and so on. Its main advantages are low odor, waterproof and corrosion resistance, good mechanical properties and impact resistance. Although polypropylene plastic has many advantages, it has a big disadvantage that when the temperature is high, the additives or small molecular impurities in the polypropylene plastic in the car will decompose and volatilize harmful substances, which will harm the people in the car. bodily harm. Therefore, how to reduce or suppress volatile substances in polypropylene plastics, or to find harmless alternatives has become the key to solving this problem. Patent CN200910221208.5 discloses a low emission modified polypropylene com...

AI Technical Summary

Problems solved by technology

Although polypropylene plastic has many advantages, it has a big disadvantage that when the temperature is high, the additives or small molecular impurities in the polypropylene plastic in the car will decompose and volatilize harmful substances, which will harm the people in the car. bodily harm

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