Modified PP automobile special material and production method thereof

Abstract

The invention discloses a modified PP (polypropylene) automobile special material which comprises the formula of resin matrixes PPH and PPB, reinforcing filler talcum powder, high-density polyethylene HDPE, toughening agent EOC, age resister, compatilizer and master batch according to the parts by weight: 5-10 pats of PPH (homo polypropylene), 90-95 parts of PPB (co-polypropylene), 20-40 parts ofactive talcum powder or talc grain, 5-10 parts of HDPE (high-density polyethylene), 2-8 parts of EOC (flexibilizer), 0.3-0.6 part of age resister, 2-8 parts of PP-g-MA (compatilizer) and 2-4 parts of master batch. In the above formula, the sum of PPH (homo polypropylene) and PPB (co-polypropylene) is equal to 100 parts, and the PPH (homo polypropylene) and PPB (co-polypropylene) are both granular substance; the active talcum powder or talc grain is processed by silane coupling agent, and liquid paraffin is added; the age resister mainly comprises master antioxidant, slave antioxidant and uvioresistant agent which are all powdery substance; the color of the master batch is determined according to product requirements, and the master batch is granular substance. The invention utilizes the principle that solubility parameters are similar; other polymers and various auxiliary agents, such as age resister, compatilizer, flexibilizer, fillers and the like are added into the PP material and carry out molten mechanical mixing at certain temperature so as to obtain a new material applied on lorry parts.

Description

technical field [0001] The invention relates to the technical field of polymer modification, in particular to a formulation design technology and a production method of modified PP (polypropylene) special materials for automobiles. Background technique [0002] In China, commercial vehicles are currently the main models of brands with independent knowledge. The purpose of commercial vehicles is to transport goods, and the operating environment is far worse than that of passenger vehicles. At the same time, domestic commercial vehicles are facing industrial upgrading and price pressure. Under such realistic conditions, plastic is widely used as a material with a high degree of design freedom and easy processing in the development of new car bodies and the modification of old car bodies. [0003] The latest feature of the development of plastic products for commercial vehicles is product enlargement and assembly integration. At present, in the body plastic products, the pro...

AI Technical Summary

Problems solved by technology

[0008] 2. Ordinary polypropylene has problems such as high low-temperature brittleness and poor dimensional stability caused by post-crystallization

[0009] 3. Ordinary polypropylene is a non-polar material, which has poor color adhesion and is not easy to paint, and its own color stability is also poor

Images