Recycled modified PP and PE automotive trim special material and preparation method thereof

Abstract

The invention discloses a recycled modified PP and PE automotive trim special material and a preparation method thereof. The recycled modified PP and PE automotive trim special material comprises thefollowing raw materials in parts by weight: 80-100 parts of recycled particles, 40-45 parts of a reinforcing agent, 0.2-0.4 part of isophthalic acid, 4-6 parts of bis(triazinyl)aminostilbene, 1-3 parts of an antioxidant and 1-3 parts of a light stabilizer. The preparation method comprises the following steps: 1, adding the recycled particles, the reinforcing agent, the isophthalic acid, the bis(triazinyl)aminostilbene, the antioxidant and the light stabilizer into a high-speed mixer, and conducting mixing for 15 minutes to obtain a premix; and 2, pouring the premix into a hot mixing machine, discharging the premix to a cold mixing machine when the premix is subjected to hot mixing to 100-110 DEG C, then starting cold mixing to room temperature to obtain a dry mixture, and carrying out meltblending on the dry blend at 145-155 DEG C, conducting treatment through a twin-screw extruder, and conducting granulating to obtain the recycled modified PP and PE automotive trim special material.

Description

technical field [0001] The invention belongs to the technical field of special materials for automotive interior decoration, and in particular relates to a regeneration-modified PP and PE special material for automobile interior decoration and a preparation method thereof. Background technique [0002] The interior of many cars is composed of polypropylene (PP) and polyethylene (PE), which is commonly known as plastic. The peculiar smell that usually comes out mainly comes from PP, and these unpleasant smells can be called VOC, which is volatile organic compound. In the industrial production process, propylene is polymerized by a catalyst to become polypropylene. For the convenience of transportation, it needs to be extruded into plastic particles, and this VOC is produced during granulation. Waste plastic waste is light and bulky, with stable chemical properties, and it is difficult to be eliminated by the environment after being discarded. With the extensive use of plasti...

AI Technical Summary

Problems solved by technology

Waste plastic waste is light and bulky, with stable chemical properties, and it is difficult to be eliminated by the environment after being discarded. With the extensive use of plastics, waste plastic waste can be seen everywhere, and landfill is usually used to deal with plastic waste. Landfilling waste plastic waste will Occupying a large amount of land resources, plastic waste is relatively stable in nature and difficult to degrade. If it stays in the soil for a long time, it will damage the soil structure, cause soil compaction, prevent crops from breathing and absorbing nutrients, and even reduce production; in addition, incineration will produce a lot of toxic gases. will cause air pollution

[0003] Generally speaking, the current technology and process cannot guarantee a 100% success rate of the polymerization reaction, so those substances that cannot be polymerized will move in a volatile manner, so an unpleasant smell is produced. The raw materials of special materials contain aromatic hydrocarbons and olefins, which are the main sources of unpleasant odors in automotive interiors