Flame-treatment-free polypropylene composition for automobile bumper and preparation method of flame-treatment-free polypropylene composition

A polypropylene composition and the technology of the composition are applied in the field of polypropylene composition for automobile bumpers and its preparation, which can solve the problems that the addition of a large amount of polar modifier on the surface of oligomers affects the mechanical properties, etc., and achieve the improvement of paint Molecular weight, excellent surface polarity, and the effect of overcoming precipitation defects

Pending Publication Date: 2021-04-20
JIANGSU KINGFA SCI & TECH ADVANCED MATERIALS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a special polypropylene composition for flame-free treatment of automobile bumpers, which has extremely high surface polarity, overcomes the precipitation problem of traditional small molecule surface polarity modifiers, and oligomers The addition of a large amount of surface polar modifier affects the mechanical properties. Its performance is especially suitable for the requirements of automotive exterior parts such as bumpers that require painting.

Method used

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  • Flame-treatment-free polypropylene composition for automobile bumper and preparation method of flame-treatment-free polypropylene composition
  • Flame-treatment-free polypropylene composition for automobile bumper and preparation method of flame-treatment-free polypropylene composition
  • Flame-treatment-free polypropylene composition for automobile bumper and preparation method of flame-treatment-free polypropylene composition

Examples

Experimental program
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Effect test

Embodiment 1

[0028] According to the weight ratio shown in Table 1, 59.5 parts by weight of polypropylene PP M2600R, 8 parts by weight of ionic polymer Surlyn 8920, 2 parts by weight of polyetheramine JM-9000, 15 parts by weight of talcum powder TYT-899, and 15 parts by weight of elastomer POE8842, 0.1 weight part of hindered phenolic primary antioxidant Irganox 1010, 0.1 weight part of phosphite secondary antioxidant Irganox 168, 0.3 weight part of processing aid zinc stearate ZN-ST were mixed evenly, and passed through 56:1 long Diameter ratio twin-screw extrusion granulation, the extrusion temperature is 200 ℃.

Embodiment 2

[0030] According to the weight ratio shown in Table 1, 59.5 parts by weight of polypropylene PP M2600R, 8 parts by weight of ionic polymer Surlyn 8920, 2 parts by weight of polyether polyol JC-9000, 15 parts by weight of talcum powder TYT-899, 15 parts by weight of elastic Body POE8842, 0.1 weight part of hindered phenolic primary antioxidant Irganox 1010, 0.1 weight part of phosphite secondary antioxidant Irganox 168, 0.3 weight part of processing aid zinc stearate ZN-ST are mixed uniformly, passed 56:1 Aspect ratio twin-screw extrusion granulation, the extrusion temperature is 200 ℃.

Embodiment 3

[0032] According to the weight ratio shown in Table 1, 59.5 parts by weight of polypropylene PP M2600R, 8 parts by weight of ionic polymer Surlyn 8920, 1 part by weight of polyetheramine JM-9000, 1 part by weight of polyether polyol JC-9000, 15 parts by weight Talc powder TYT-899, 15 parts by weight of elastomer POE 8842, 0.1 part by weight of hindered phenolic primary antioxidant Irganox 1010, 0.1 part by weight of secondary phosphite antioxidant Irganox 168, 0.3 part by weight of processing aid stearic acid Zinc ZN-ST is mixed evenly, and granulated by twin-screw extrusion with a length-to-diameter ratio of 56:1, and the extrusion temperature is 200°C.

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Abstract

The invention relates to a flame-treatment-free polypropylene composition for an automobile bumper and a preparation method of the flame-treatment-free polypropylene composition, and the flame-treatment-free polypropylene composition comprises the following components in parts by weight: polypropylene, an ionic polymer, polyether amine / polyether polyol, an elastomer, talcum powder, a heat stabilizer and a processing aid. The polypropylene composition provided by the invention can obviously improve the surface polarity and coating molecular weight of the material, and ensures the application of the polypropylene material in parts such as automobile bumpers without flame treatment.

Description

technical field [0001] The invention belongs to the field of high molecular polymer processing, and in particular relates to a special polypropylene composition for automobile bumpers and a preparation method thereof. Background technique [0002] Due to its cost-effective advantages, polypropylene has gradually replaced ABS, PC / ABS and other engineering plastics and has been widely used in automotive exterior parts such as bumpers. Due to aesthetic requirements, car bumpers need the same paint as metal bodywork. Polypropylene materials are chemically inert on the surface due to their semi-crystalline and non-polar characteristics, making it difficult to paint. The traditional treatment method is to use flames to pre-treat the surface. Under the action of the high temperature generated by the flame and the oxygen in the air, a large number of polar groups are generated on the surface of the bumper, and these polar groups react with the chemical groups in the paint primer of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/14C08L23/08C08L71/00C08L79/02C08K3/34
Inventor 陈延安孙刚李国明李志平杨波罗忠富
Owner JIANGSU KINGFA SCI & TECH ADVANCED MATERIALS CO LTD
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