Formula of modified polypropylene composite material with low shrinking percentage and production method thereof

Abstract

The invention discloses a formula of a modified polypropylene composite material with low shrinking percentage. The formula comprises the components in parts by weight as follows: 50-70 parts of polypropylene, 10-15 parts of polyethylene, 10-20 parts of POE (Polyolefin Elastomer), 20-30 parts of opal, 1-3 parts of silane coupling agent, 2-5 parts of talcum powder and 1-3 parts of assistant. According to the invention, opal is added into the formula to modify the surface of the opal through the silane coupling agent and the talcum powder, so that inorganic filler in the composite material not only has the weight increasing effect, but also enables the modified polypropylene composite material to have lower shrinking percentage and low price and cost. Other performances of the composite material are not affected, and the appearance quality is not affected, so that the material is very suitable for application.

Description

technical field [0001] The invention relates to a formula of a modified polypropylene composite material and a production method thereof, in particular to a formula of a modified polypropylene composite material with a lower shrinkage rate and a production method thereof, and belongs to the technical field of chemical industry. Background technique [0002] For a long time, polypropylene composite materials have been widely used because of their low density, rigidity, insulation, and corrosion resistance. The shrinkage of polypropylene is a very important performance parameter of modified polypropylene. At present, the most effective methods to improve the shrinkage of polypropylene are as follows: [0003] 1. Adding mineral powder: the shrinkage improvement effect of this method is not very obvious; [0004] 2. Add glass fiber: it can effectively reduce the shrinkage rate, but it will destroy the toughness of polypropylene, and the appearance quality will be significantly...

AI Technical Summary

Problems solved by technology

[0003] 1. Adding mineral powder: the shrinkage improvement effect of this method is not very obvious;

[0004] 2. Add glass fiber: it can effectively reduce the shrinkage rate, but it will destroy the toughness of polypropylene, and the appearance quality will be significantly reduced;

[0005] 3. Prepared by rubber blending method: this method can effectively reduce the shrinkage rate, but it is expensive and will greatly increase production costs, which is not conducive to market competition