Filler masterbatch used for increasing polarity of polypropylene and preparation method thereof

Abstract

The invention discloses a filler masterbatch used for increasing the polarity of polypropylene and a preparation method thereof. The filler masterbatch is characterized by comprising the following components by weight percent: 50%-79% of inorganic filler, 15%-30% of carrier, 5%-17% of polar additive and 1%-3% of processing additive; and the polar additive is one or more of thermoplastic polyurethane resin (TPU), maleic anhydride grafted polypropylene, epoxy resin, ethylene acrylate, ethylene vinyl acetate, polyether amine and polybutylene polyol. In the preparation method of the invention, the added carrier can not improve the polarity of polypropylene, the inorganic filler is used to increase the rigidity of the material; the key is to introduce the polar additive with high unipolarity, thus the filler masterbatch used for increasing the polarity of polypropylene can be prepared; when the filler masterbatch is combined with the polypropylene material for production, the surface polarity of the filled and modified polypropylene material can be increased, the surface energy of the filled and modified polypropylene can be reduced, the dimension stability can be increased, the modified polypropylene material can have good paint adhesion and the material can be used to form exterior trimming parts such as bumpers and interior trimming parts such instrument panels.

Description

technical field [0001] The invention belongs to the technical field of modified materials, and in particular relates to a filler masterbatch for improving the polarity of polypropylene. Background technique [0002] Usually, in the process of plastic processing, inorganic fillers such as talcum powder, calcium carbonate, etc. are mixed with carrier resins to make masterbatches, which have many advantages, such as good stability of plastic products, and easy dosing and blending operations in production , Purify the working environment, etc. While preparing filler masterbatches, we can also prepare filler masterbatches that can improve some functions of polypropylene materials by adding functional additives. [0003] At present, modified polypropylene materials are widely used due to their outstanding advantages such as wide sources, low density, good mechanical balance, chemical corrosion resistance, easy processing and low price, especially in the development and applicatio...

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Problems solved by technology

[0006] The above methods can improve the polarity of PP, but these production processes are relatively complicated, and because the modified polypropylene materials used in automobiles are mostly filled products, the uniformity of blanking in actual production will be affected