Filled polypropylene composite material applied to rapid forming component

Abstract

The invention discloses a filled polypropylene composite material applied to a rapid forming component, comprising the following ingredients in parts by weight: 60-88 parts of polypropylene, 1-25 parts of a toughener, 10-30 parts of a mineral powder filler, 1-5 parts of nanofiller master batches, 0.3-0.5 part of a nucleator, 0.1-1.0 part of heat stabilizer DSTP, 0.1-1.0 part of antioxidant 1010, and 0.1-0.5 part of antioxidant 168. The filled polypropylene composite material applied to a rapid forming component provided by the invention has the advantages of being good in material flowability, low in shrinking rate, good in dimensional stability, and capable of reducing apparent defects such as tiger skin strips; and moreover, a process for preparing the filled polypropylene composite material applied to a rapid forming component is simple and low in cost.

Description

technical field [0001] The invention relates to a polymer material, more specifically, to a polypropylene composite material. Background technique [0002] Polypropylene (PP) is one of the fastest growing varieties in the plastics industry. It has the advantages of good mechanical properties, light specific gravity, non-toxicity, corrosion resistance, easy processing, etc., and the raw materials are easy to obtain and low in price, so it has been widely used in the fields of home appliances, automobiles, and packaging. At present, the market competition of modified polypropylene materials is fierce, and many researchers improve their competitiveness by improving production efficiency, that is, increasing the injection molding rate of materials. However, there are not many reports in this area at present. Some reports disclose high-gloss rapid prototyping polypropylene and its preparation method. It increases the molding rate by adding a nucleating agent; Qilu Branch of Chin...

AI Technical Summary

Problems solved by technology

Although the addition of a nucleating agent increases the crystallization temperature and half-crystallization time, making the crystallization of the material more uniform, the parts are shaped better under the same cooling time, and the gap between the parts and the gauge is improved by more than 50%, but the addition of the nucleating agent The shrinkage rate of the material is increased, and the product is about 0.6mm smaller at one SPC point, and it is easy to deform

In addition, the viscoelasticity of polymer materials causes the faster the injection speed, the worse the flow stability of the material. When injection molding large parts such as automobile bumpers, instrument panels, and door panels, tiger skin patterns are prone to appear.