Coating-free metal-color polypropylene plate and preparation method thereof

Abstract

The invention discloses a coating-free metal-color polypropylene plate and a preparation method thereof. The polypropylene plate comprises a surface decoration layer and a base material layer, whereinthe surface decoration layer is prepared from the following raw materials in parts by weight. The material is prepared from, by weight, 90-98 parts of low-melt-index impact-resistant co-polypropyleneresin, 0.02-2 parts of aluminum silver powder, 0.5-8 parts of pearl powder, 0.1-2 parts of UV absorbent, 0.1-0.8 part of antioxidant 1010 and 0.2-0.8 part of antioxidant 168; the base material layeris prepared from the following raw materials in parts by weight: 95-99 parts of low-melt-index impact-resistant co-polypropylene resin, 0.5-8 parts of titanium dioxide, 0.1-2 parts of a light stabilizer, 0.1-0.8 part of an antioxidant 1010 and 0.2-0.8 part of an antioxidant 168. Firstly, a surface decoration layer and a base material layer are prepared respectively, and then the surface decorationlayer and the base material layer are guided into a three-roller press to be subjected to rolling extrusion molding. The appearance effect of the decorative layer on the surface of the plate reachesthe coating effect, the coating process is omitted, the cost is greatly reduced, VOC emission of coating is reduced, and the plate is more environmentally friendly.

Description

technical field [0001] The invention relates to the technical field of polypropylene sheet preparation, in particular to a metallic-color-free polypropylene sheet and a preparation method thereof. Background technique [0002] Polypropylene, referred to as PP, is a colorless, odorless, non-toxic, translucent solid substance. Polypropylene is a thermoplastic synthetic resin with excellent performance, which has been widely developed and applied in many fields such as machinery, automobile, electronic appliances, construction, textile, packaging, agriculture, forestry, fishery and food industry. [0003] With the rapid development of my country's consumer market, consumers have higher and higher requirements for the appearance of polypropylene products. At present, the appearance of polypropylene products is mainly modified by painting. Due to the low polarity of the surface of ordinary polypropylene materials, the bonding force between the coated surface paint layer and the ...

AI Technical Summary

Problems solved by technology

Due to the low polarity of the surface of ordinary polypropylene materials, the bonding force between the coated surface paint layer and the polypropylene substrate is very low, which greatly limits the application range of polypropylene materials

At present, the mature coating process adopts the baking paint process, but the cost is high, and it also pollutes the environment greatly.