Transparent scratch-resistant PC/PMMA (Poly Carbonate/Polymethyl Methacrylate) alloy material and preparation method thereof

An alloy material and scratch-resistant technology, which is applied in the field of transparent scratch-resistant PC/PMMA alloy material and its preparation, can solve the problems such as the scratch resistance of alloy materials that are not mentioned, and achieve the effect of high transparency

Active Publication Date: 2014-10-08
SHANGHAI KUMHO SUNNY PLASTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Chinese patent document CN201210353339.0 discloses a transparent polycarbonate alloy material, but the document does not mention wheth

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0027] Example 1 Preparation of the transparent scratch-resistant PC / PMMA alloy material of the present invention (1)

[0028] (A) Weigh each component in parts by weight: 40 parts L1250Y, 60 parts PMMA205, 0.1 part antioxidant 1010, 0.1 part antioxidant 168, 1 part pentaerythritol ester.

[0029] (B) Add L1250Y, antioxidant 1010, antioxidant 168 and pentaerythritol ester into a mixing mixer for mixing, and feed the resulting mixture through the main feed port of the twin-screw extruder.

[0030] (C) After the PMMA205 is melted, high-pressure inert gas is introduced, and the high-pressure injection pump is used to inject from the side feeding port of the extruder, blending and granulating, the extrusion temperature is 250~300℃, and the screw extruder speed is 600~900rpm , After melt extrusion, granulation to obtain transparent scratch-resistant PC / PMMA alloy material. Wherein, the inert gas is carbon dioxide; the temperature of the inert gas exceeds 31°C, and the pressure is between...

Example Embodiment

[0031] Example 2 Preparation of the transparent scratch-resistant PC / PMMA alloy material of the present invention (2)

[0032] (A) Weigh each component by weight: 95 parts of L1250Y, 5 parts of PMMA205, 0.5 parts of antioxidant 1010, 0.5 parts of antioxidant 168, and 0.1 parts of ethylene bis-stearamide.

[0033] (B) Add L1250Y, antioxidant 1010, antioxidant 168 and ethylene bis-stearamide into the mixing mixer for mixing, and feed the resulting mixture through the main feed port of the twin-screw extruder.

[0034] (C) After the PMMA205 is melted, high-pressure inert gas is introduced, and the high-pressure injection pump is used to inject from the side feeding port of the extruder, blending and granulating, the extrusion temperature is 250~300℃, and the screw extruder speed is 600~900rpm , After melt extrusion, granulation to obtain transparent scratch-resistant PC / PMMA alloy material. Wherein, the inert gas is nitrogen; the temperature of the inert gas exceeds 31°C, is between 3...

Example Embodiment

[0035] Example 3 Preparation of the transparent scratch-resistant PC / PMMA alloy material of the present invention (3)

[0036] (A) Weigh each component by weight: 80 parts of PC-1220, 20 parts of PMMA205, 0.1 part of antioxidant 245, 0.1 part of antioxidant 168, and 0.3 part of ethylene bis-stearamide.

[0037] (B) Add L1250Y, antioxidant 245, antioxidant 168 and ethylene bisstearamide into a mixing mixer for mixing, and feed the resulting mixture through the main feed port of the twin-screw extruder.

[0038] (C) After the PMMA205 is melted, high-pressure inert gas is introduced, and the high-pressure injection pump is used to inject from the side feeding port of the extruder, blending and granulating, the extrusion temperature is 250~300℃, and the screw extruder speed is 600~900rpm , After melt extrusion, granulation to obtain transparent scratch-resistant PC / PMMA alloy material. Wherein, the inert gas is carbon dioxide and argon; the temperature of the inert gas exceeds 31°C, is...

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Abstract

The invention relates to a transparent scratch-resistant PC/PMMA (Poly Carbonate/Polymethyl Methacrylate) alloy material which is prepared from the following raw materials in parts by weight: 40-95 parts of polycarbonate, 5-60 parts of polymethyl methacrylate, 0.1-1 part of an antioxidant and 0.1-1 part of a lubricant. A preparation method comprises the following steps: mixing the polycarbonate, the antioxidant and the lubricant in a stirrer; feeding the mixture through a main feed inlet of a twin-screw extruder; and introducing a high pressure inert gas into fused polymethyl methacrylate, injecting from a side feed inlet of the extruder by using a high pressure injection pump, and blending and prilling. According to the invention, the PC phase and the PMMA phase are better dispersed and blended and compatibilized by introducing the high pressure inert gas into the PMMA melt, controlling the gas pressure to be higher than 7.4MPa and using the extruder with great draw ratio. The prepared PC/PMMA alloy material is high in transparency and scratch-resistant.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a transparent scratch-resistant PC / PMMA alloy material and a preparation method thereof. Background technique [0002] Polycarbonate resin has excellent impact resistance, heat resistance and transparency, wide temperature range, high dimensional stability, good creep resistance, and is widely used in automobiles, electronic appliances, glass lenses and medical devices, etc. field. The light transmittance of polycarbonate is as high as 90% in 1mm thickness, and the refractive index is high, so it can be used as a good optical material. However, polycarbonate has poor scratch resistance and low hardness, which limits the application of polycarbonate. At present, the commonly used method to improve the hardness and wear resistance of polycarbonate is to cover the surface of polycarbonate with a high-hardness coating or add a scratch-resistant agent after molding. These methods ca...

Claims

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Application Information

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IPC IPC(8): C08L69/00C08L33/12
Inventor 柏莲桂李强罗明华辛敏琦
Owner SHANGHAI KUMHO SUNNY PLASTICS
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