Plastic filling master batch and preparation method thereof

Abstract

The invention discloses plastic filling master batch which is prepared from the following components in parts by weight: 85 to 90 parts of padding, 0.5 to 1 part of lubricating agent, 0.5 to 1 part of coupling agent, 6 to 13 parts of binding agent and 0.1 to 0.5 part of curing agent; the binding agent is liquid bisphenol A-type ethoxyline resin, and the curing agent is maleic anhydride, phthalic anhydride, methyl tetrahydrophthalic anhydride or methylhexahydrophthalic anhydride; the invention also discloses the preparation method of the plastic filling master batch. Compared with the prior art, the plastic filling master batch provided by the invention has the characteristics of high purity, easiness in fluidity, high dispersion, no floating and environment friendliness. The method for preparing the master batch has the advantages of short flow, less energy consumption, and less dust during a production process.

Description

technical field [0001] The invention relates to the field of masterbatch production, in particular to a plastic filling masterbatch and a preparation method thereof. Background technique [0002] Mineral powder-filled modified plastics is one of the most important ways to modify plastics at present. It can not only achieve functional modification, but also greatly reduce material costs and improve market competitiveness. Commonly used fillers include talcum powder, calcium carbonate, barium sulfate and mica powder, etc. They have different shapes and particle sizes, but the common technical difficulty of their modified plastics is: how to smoothly add them to the matrix resin and distribute them evenly , At the same time, it can minimize the dust in the working environment. [0003] The traditional method is to add powder to the plastic through the side feeding method of the extruder, but there are problems in this method: a large amount of powder floats during the plastic ...

AI Technical Summary

Problems solved by technology

[0003] The traditional method is to add powder to the plastic through the side feeding method of the extruder, but there are problems in this method: a large amount of powder floats during the plastic processing process and it is difficult to clean the machine and change production

But this method also has great defects, the main defect comes from the manufacture of filler masterbatch

In the prior art, preheating, melting, plasticizing, kneading, cooling and other processes are required to manufacture filler masterbatches, resulting in a large waste of energy and high manufacturing costs; and the mixture must be in a melt state before it can be granulated, which limits the amount of fillers. The content is below 80%, which is not as high as the traditional way of adding powder; at the same time, this kind of masterbatch is only suitable for adding to filling products compatible with the masterbatch carrier resin, and the versatility is very poor

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