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A high-gloss spray-free environmentally friendly flame-retardant polycarbonate material and preparation method thereof

A technology for flame-retardant polycarbonate and polycarbonate resin, which is applied in the field of environment-friendly flame-retardant polycarbonate materials and its preparation, can solve problems such as surface fogging, and achieve the effects of good high-gloss performance and great market application prospects.

Active Publication Date: 2018-11-09
SHANGHAI KUMHO SUNNY PLASTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But at present, it is still difficult for such materials to achieve high-gloss spray-free coating, and the surface often has the problem of fogging

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A high-gloss spray-free environment-friendly flame-retardant polycarbonate composition and a preparation method thereof, the method comprising the following steps:

[0032] (1) Feed ABS resin from the feed port, feed water with a high-pressure pump at the side feed port, the pressure is 7MP, melt and extrude at 200-260°C, the screw extruder speed is 500rpm, and the pressure is 2MPa, After melting and extruding, the over-water ABS particles are obtained.

[0033] (2) Weigh each component by weight: PC: 100, water-treated ABS particles: 40, flame retardant: 20, PMMA: 5, toughening agent: 5, antioxidant 245: 0.1, antioxidant 168 : 0.1, lubricant PETS: 0.3.

[0034] (3) Feed the raw material from the feeding port, melt and extrude at 200-280°C, the screw extruder rotates at 500rpm, and the pressure is 2MPa, melts and extrudes, and granulates to obtain the product.

[0035] (4) The screw diameter of the extruder is 35 mm, and the aspect ratio is 32.

Embodiment 2

[0037] A high-gloss spray-free environment-friendly flame-retardant polycarbonate composition and a preparation method thereof, the method comprising the following steps:

[0038] (1) Feed ABS resin from the feed port, feed water with a high-pressure pump at the side feed port, the pressure is 7MP, melt and extrude at 200-260°C, the screw extruder speed is 500rpm, and the pressure is 2MPa, After melting and extruding, the over-water ABS particles are obtained.

[0039] (2) Weigh each component by weight: PC: 100, water-treated ABS particles: 15, flame retardant: 10, PMMA: 10, toughening agent: 10, antioxidant 245: 0.1, antioxidant 168 : 0.1, lubricant PETS: 0.3.

[0040] (3) Feed the raw material from the feeding port, melt and extrude at 200-280°C, the screw extruder rotates at 500rpm, and the pressure is 2MPa, melts and extrudes, and granulates to obtain the product.

[0041] (4) The screw diameter of the extruder is 35 mm, and the aspect ratio is 32.

Embodiment 3

[0064] Adopt the same preparation method as Example 1 or Example 2, the difference is that the raw materials used are different, specifically as follows:

[0065] Aromatic polycarbonate resin: 100;

[0066] ABS resin: 25;

[0067] Polyaryl phosphate: 15;

[0068] Ethylene-methyl acrylate: 8;

[0069] PMMA: 8;

[0070] Antioxidant 1076:1;

[0071] Ethylene bis stearamide: 0.1.

[0072] Among them, the molecular weight of the aromatic polycarbonate resin is 25,000, the molecular weight of the ABS resin is 150,000, and the molecular weight of the polymethyl methacrylate is 50,000.

[0073] After testing, the prepared polycarbonate material has high light performance and good flame retardancy.

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Abstract

The invention relates to a high-gloss spray-free environment-friendly flame-retardant polycarbonate (PC) material and a preparation method thereof. The composition comprises the following components in parts by weight: 100 parts of PC resin, 15-40 parts of acrylonitrile-butadiene-styrene (ABS) resin, 10-20 parts of flame retardant, 5-10 parts of polymethyl methacrylate (PMMA), 0.1-1 part of antioxidant and 0.1-1 part of lubricant. The preparation method comprises the following steps: (1) granulating the ABS resin to obtain ABS granules; and (2) mixing the ABS granules with the rest raw materials, and extruding to obtain the product. Compared with the prior art, the flame retardant is free of halogens, so the PC composition provided by the invention is an environment-friendly flame-retardant high-polymer material. The ABS resin is granulated to eliminate small-molecule volatile matters in the ABS resin, thereby preventing the small molecules from aggregating on the material surface and from influencing the high-gloss spray-free effect. Meanwhile, the PMMA is added to obtain the high-surface-quality high-gloss spray-free environment-friendly flame-retardant PC composition.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a high-gloss, spray-free, environment-friendly flame-retardant polycarbonate material and a preparation method thereof. Background technique [0002] Due to the high pollution, high cost and great harm to the human body caused by the spraying of plastic parts, high-gloss spray-free materials have become the focus of the market. In particular, high-gloss spray-free materials based on polycarbonate are widely used for their excellent physical properties and strong impact resistance. [0003] However, due to the poor processability of polycarbonate materials, an alloy material of polycarbonate and styrene-butadiene-acrylonitrile (ABS) is widely used. In order to meet the fire protection requirements in the actual use of PC / ABS, research on environmentally friendly flame-retardant PC / ABS alloys has become the focus of this field. But at present, it is still difficult for such mater...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L69/00C08L55/02C08L33/12B29B9/06B29C47/76B29C48/76
CPCB29B9/06B29C48/763B29C48/766C08L69/00C08L2201/02C08L2205/035C08L55/02C08L33/12
Inventor 祝彤李强罗明华辛敏琦
Owner SHANGHAI KUMHO SUNNY PLASTICS
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