Soft TPO material for automobile interior decoration as well as preparation method thereof

Abstract

The invention provides a soft TPO material for automobile interior decoration as well as a preparation method thereof. The soft TPO material comprises a back coating, a foaming agent, a soft TPO layerand a water-based coating layer sequentially from bottom to top, wherein the back coating is a polyurethane type coating agent or a polyolefin coating agent; the foaming agent is a polypropylene foamlayer; the soft TPO layer comprises the following components in parts by weight: 20 to 60 parts of TPO, 10 to 40 parts of ethylene propylene diene monomer rubber, 5 to 20 parts of polyolefin elastomer, 5 to 15 parts of modified polypropylene, 0 to 5 parts of light stabilizer, 0 to 5 parts of heat stabilizer and 4 to 8 parts of pigment; and the water-based coating agent is a water-based polyurethane coating agent. The preparation method of the soft TPO material for automobile interior decoration comprises the following steps: extruding soft TPO skin by an extruding method, performing surface treatment, compounding the foaming agent and finally preparing the soft TPO material. The soft TPO material prepared by the method has soft hand feeling and soft touch feeling, is comfortable to use, has the advantages of low odor and low VOC, and is recoverable, green and environmentally-friendly.

Description

technical field [0001] The invention relates to the technical field of automobile interior decoration, in particular to a soft TPO material used for automobile interior decoration and a preparation method thereof. Background technique [0002] In the interior design of automobiles, in order to achieve a certain feel and aesthetic effect on the instrument panel and door panels, some treatments are usually done on the skeleton. At present, the mainstream methods are: slush molding, polyurethane spraying or direct use of ABS skin. Taking the interior material of the instrument panel as an example, the soft material can be slush-molded polyvinyl chloride, polyolefin elastomer material, etc. In terms of texture and appearance, polypropylene injection molded parts are far from soft materials. On the other hand, the mold life of slush-molded PVC is generally short, and the interior materials contain halogens and plasticizers, which are not environmentally friendly; polyolefin elas...

AI Technical Summary

Problems solved by technology

On the other hand, the mold life of slush-molded PVC is generally short, and the interior materials contain halogens and plasticizers, which are not environmentally friendly; polyolefin elastomer materials are recyclable, lightweight and environmentally friendly, and have become a new type of automotive interior. Decorative materials, providing domestic automakers with new solutions for automotive interior materials, but compared with slush-molded PVC products, its feel is harder and the hardness is higher

ABS is a commonly used hard plastic. Although the PVC-based slush molding process is cheap, it can also bring a good feel to the door panel and instrument panel, but the process control is poor and the odor is large, and high VOC is also difficult to solve. question

Polyurethane spraying also tends to cause uneven thickness; the ABS surface is used as the interior skin, which has the problem of poor hand feeling

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