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Modified polypropylene for automotive interiors and preparation method of modified polypropylene

A polypropylene and high-impact polypropylene technology, which is applied in the field of modified polypropylene for automotive interiors and its preparation, can solve the problems of easy aging and decomposition, poor stability of rubber additives, and impact on the health of users.

Pending Publication Date: 2022-02-11
QINGDAO GON TECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these rubber additives can reduce the glossiness of the polypropylene material itself, due to the poor stability of the rubber additives, they are easy to age and decompose when the temperature is high, and then generate volatile organic gases (VOC), which affects the use. physical health

Method used

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  • Modified polypropylene for automotive interiors and preparation method of modified polypropylene
  • Modified polypropylene for automotive interiors and preparation method of modified polypropylene
  • Modified polypropylene for automotive interiors and preparation method of modified polypropylene

Examples

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preparation example

[0027] A method for preparing a low-gloss material masterbatch, comprising the following steps,

[0028] 1) Weigh raw materials according to the following parts by weight: 50 parts of conventional polypropylene, 10 parts of polyolefin elastomer, 0.3 part of antioxidant, 0.5 part of lubricant,

[0029] Polyolefin elastomer, metallocene catalyzed polyethylene, antioxidant and lubricant are added to the high-speed mixer and mixed evenly to form a mixed raw material;

[0030] 2) Put the above-mentioned raw materials into an internal mixer for internal mixing, and the internal mixing temperature of the internal mixer is set to 190° C.;

[0031] 3) Add the raw materials after banburying to a single-screw extruder, and set the temperature of the single-screw extruder to 185° C.; extrude, air-cool, and granulate the raw materials after banburying through the single-screw extruder, and then Form low gloss material masterbatch.

Embodiment 1

[0034] A method for preparing modified polypropylene for automobile interior decoration, comprising the following method steps:

[0035] Step S1, weighing raw materials according to the following parts by mass: 20 parts of conventional polypropylene, 20 parts of high-impact polypropylene, 8 parts of inorganic filler, 5 parts of low-gloss material masterbatch, 5 parts of deodorant, and 3 parts of antioxidant , 3 parts of light stabilizer, 3 parts of acid binding agent, 3 parts of lubricant.

[0036] Add the above raw materials to the twin-screw extruder for extrusion and granulation; the temperature of the twin-screw extruder is set to 200°C; the speed of the twin-screw extruder is set to 400 rpm; the vacuum degree of the twin-screw extruder is set to 0.1MPa;

[0037] Step S2, drying the raw material particles extruded by the twin-screw extruder, and drying at 100°C for 4 hours;

[0038] Step S3, putting the dried raw material particles into an injection molding machine for i...

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Abstract

The invention relates to modified polypropylene for automotive interiors and a preparation method of the modified polypropylene. The key point of the technical scheme is that the modified polypropylene is prepared from the following components in parts by mass: 20-50 parts of conventional polypropylene, 20-50 parts of high-impact polypropylene, 8-20 parts of inorganic filler, 5-20 parts of low-gloss material master batch, 0-5 parts of a deodorant, 0-3 parts of an antioxidant, 0-3 parts of a light stabilizer, 0-3 parts of an acid-binding agent and 0-3 parts of a lubricant. The modified polypropylene provided by the invention has good stability, and generates less volatile organic compounds in daily use compared with traditional modified polypropylene for automotive interiors.

Description

technical field [0001] The invention relates to the technical field of automobile interior materials, in particular to a modified polypropylene for automobile interior decoration and a preparation method thereof. Background technique [0002] Cars are a common means of transportation in people's daily life. Car interiors are usually made of polypropylene (PP). In order to change the characteristics of polypropylene, other additives are usually added to conventional polypropylene to make it more Excellent characteristics, so as to better meet people's needs. Modified polypropylene for automotive interiors usually needs to meet two conditions, namely low gloss, thereby reducing the impact of interior reflection on the driver; low volatile organic compounds, thereby reducing the adverse effects on the driver's body . [0003] In order to reduce the glossiness of the polypropylene material itself, usually when preparing modified polypropylene, rubber with poor compatibility wi...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L23/10C08L23/08C08L23/06C08J3/22
CPCC08L23/12C08L23/10C08J3/226C08J2423/12C08J2423/08C08J2423/06C08L23/0815C08L23/06
Inventor 张杰王丽丽王龙李艳白建雷黄培元李庆文王爱国
Owner QINGDAO GON TECHNOLOGY CO LTD
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