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A kind of high-gloss piano black pp/pmma alloy resin composition and preparation method thereof

A technology of alloy resin and piano black, which is applied in the field of high-gloss piano black PP/PMMA alloy resin composition and its preparation, which can solve the problems of poor compatibility between PP and PMMA, lower transmittance of PP/PMMA, and inability to obtain piano black materials, etc. problem, achieve the effect of reducing spherulite size, accelerating PP crystallization and improving compatibility

Active Publication Date: 2022-06-07
SHANGHAI KUMHOSUNNY JINSHAN PLASTICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the PP / PMMA alloy obtained by the above-mentioned technical scheme can only be dyed to obtain high-gloss or matte materials of ordinary black or other colors, and cannot obtain piano black materials.
The reason is that maleic anhydride cannot react with PMMA, the problem of poor compatibility between PP and PMMA has not been completely solved, and the content of polyethylene grafted maleic anhydride (n=1.51-153) with a different refractive index from PP / PMMA is too high , reaching 2 to 15%, will significantly reduce the transmittance of PP / PMMA
Therefore, the effect of high-gloss piano black cannot be obtained

Method used

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  • A kind of high-gloss piano black pp/pmma alloy resin composition and preparation method thereof
  • A kind of high-gloss piano black pp/pmma alloy resin composition and preparation method thereof
  • A kind of high-gloss piano black pp/pmma alloy resin composition and preparation method thereof

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Experimental program
Comparison scheme
Effect test

preparation example Construction

[0051] Described PP resin master batch preparation method comprises the following steps:

[0052](1) take by weighing 90-94 parts of PP resin, 3-5 parts of polypropylene grafted maleic anhydride resin, 3-5 parts of styrene-methyl methacrylate-maleic anhydride terpolymer by the aforementioned parts by weight parts, 0.2-0.6 parts of hexamethylene diamine and 0.5-1 part of PP transparent nucleating agent, mix well to obtain a premix;

[0053] (2) adding the premix into a twin-screw extruder, melt extrusion, cooling and pelletizing to obtain PP resin masterbatch.

[0054] In step (2), the extrusion temperature of the melt extrusion is 200-220° C., and the rotational speed of the screw is 200-500 rpm.

[0055] The refractive index of the PMMA is 1.49, and the transmittance is ≥85%;

[0056] The toughening agent is a core-shell toughening agent ACR resin with polybutyl acrylate as the core and methyl methacrylate as the shell, and the refractive index of the toughening agent is 1....

Embodiment 1

[0078] The present embodiment provides a high-gloss piano black PP / PMMA alloy resin composition, and its raw material composition is as follows:

[0079]

Embodiment 2

[0081] The present embodiment provides a high-gloss piano black PP / PMMA alloy resin composition, and its raw material composition is as follows:

[0082]

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Abstract

The invention relates to a high-gloss piano black PP / PMMA alloy resin composition and a preparation method thereof. The PP / PMMA alloy resin composition comprises the following components in parts by weight: 17-40 parts of polypropylene PP resin masterbatch, polypropylene 60-75 parts of methyl methacrylate PMMA resin, 0-8 parts of toughening agent, 0.3-2.0 parts of black toner, 0.1-1.5 parts of antioxidant, 0.2-1.5 parts of weather resistance agent. The PP / PMMA alloy resin obtained by the invention has the appearance of high-gloss piano black, and meanwhile, it also takes into account the excellent scratch resistance, weather resistance and dimensional stability of PMMA, and the excellent fatigue resistance and chemical resistance of PP. The obtained PP / PMMA has a high-gloss piano black appearance, and has excellent weather resistance, scratch resistance, chemical resistance and impact resistance. It is very suitable for the selection of paint-free piano black for automotive exteriors.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and relates to an alloy resin composition and a preparation method thereof, in particular to a high-gloss piano black PP / PMMA alloy resin composition and a preparation method thereof. Background technique [0002] The appearance of high-gloss piano black is more and more favored by automobile design, especially the design effect of high-gloss piano black for automotive exterior parts such as grille body, pillar panel, tailgate trim panel and other parts. The spray-free high-gloss piano black material has the characteristics of high efficiency, low cost and environmental protection. At present, the materials commonly used for these parts include: PMMA / ASA alloy, PMMA / ACR alloy, ASA, and weather-resistant PC resin. Since it is a paint to replace piano black, the weather resistance and scratch resistance of the material are particularly demanding. ASA and PC materials are difficult to mee...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L33/12C08L23/12C08L51/06C08L35/06C08L51/04C08K5/17C08K5/1515
CPCC08L33/12C08L2205/08C08L2201/10C08L2205/24C08L2207/53C08L23/12C08L51/06C08L35/06C08L51/04C08K5/17C08K5/1515
Inventor 查超周霆辛敏琦
Owner SHANGHAI KUMHOSUNNY JINSHAN PLASTICS CO LTD
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