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

An automotive interior and soft technology, applied in the field of soft TPO material and its preparation, can solve the problems of poor process control, short mold life, high VOC, and achieve the effects of simple and controllable method, excellent performance and comfortable use

CN109159513AInactive Publication Date: 2019-01-08SUZHOU RUIGAO NEW MATERIAL CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2019-01-08
Estimated Expiration
Not applicable · inactive patent

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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.
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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...

Examples

Embodiment 1

[0025] A soft TPO material for automotive interiors, including from bottom to top:

[0026] Back coat: the back coat is a polyurethane type finish or a polyolefin finish;

[0027] Foam layer: the foam layer is a polypropylene foam layer;

[0028] Soft TPO layer: the soft TPO layer includes the following components in parts by weight: TPO: 20 parts; EPDM rubber: 10 parts; polyolefin elastomer: 5 parts; modified polypropylene: 5 parts; Light stabilizer: 0.1 part; Heat stabilizer: 0.1 part; Pigment: 5 parts;

[0029] Water-based finishing layer: the water-based finishing layer is a water-based polyurethane finishing agent.

[0030] A preparation method for a soft TPO material for automotive interiors, comprising the steps of:

[0031] 1) Put the components in the soft TPO layer into a high-speed mixer according to the ratio for stirring, the stirring speed is 1200 rpm, melt and extrude the mixture through an extruder to obtain a cast film to form a soft TPO layer, extrude The...

Embodiment 2

[0039] A soft TPO material for automotive interiors, including from bottom to top:

[0040] Back coat: the back coat is a polyurethane type finish or a polyolefin finish;

[0041] Foam layer: the foam layer is a polypropylene foam layer;

[0042] Soft TPO layer: the soft TPO layer includes the following components in parts by weight: TPO: 45 parts; EPDM rubber: 28 parts; polyolefin elastomer: 12 parts; modified polypropylene: 8 parts; Light stabilizer: 3.5 parts; Heat stabilizer: 1.5 parts; Pigment: 6 parts;

[0043] Water-based finishing layer: the water-based finishing layer is a water-based polyurethane finishing agent.

[0044] A preparation method for a soft TPO material for automotive interiors, comprising the steps of:

[0045] 1) Put the components in the soft TPO layer into a high-speed mixer according to the ratio for stirring, the stirring speed is 1300 rpm, melt and extrude the mixture through an extruder to obtain a cast film to form a soft TPO layer, extrude ...

Embodiment 3

[0053] A soft TPO material for automotive interiors, including from bottom to top:

[0054] Back coat: the back coat is a polyurethane type finish or a polyolefin finish;

[0055] Foam layer: the foam layer is a polypropylene foam layer;

[0056]Soft TPO layer: the soft TPO layer includes the following components in parts by weight: TPO: 60 parts; EPDM rubber: 40 parts; polyolefin elastomer: 20 parts; modified polypropylene: 15 parts; Light stabilizer: 5 parts; Heat stabilizer: 5 parts; Pigment: 8 parts;

[0057] Water-based finishing layer: the water-based finishing layer is a water-based polyurethane finishing agent.

[0058] A preparation method for a soft TPO material for automotive interiors, comprising the steps of:

[0059] 1) Put the components in the soft TPO layer into a high-speed mixer according to the ratio for stirring, the stirring speed is 1200 rpm, melt and extrude the mixture through an extruder to obtain a cast film to form a soft TPO layer, extrude The ...