Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

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
View PDF3 Cites 36 Cited by
  • 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 whether the alloy material has scratch resistance
There is no report about the PC / PMMA alloy material with good transparency and scratch resistance

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

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

[0028] (a) Weigh each component by weight: 40 parts of L1250Y, 60 parts of PMMA205, 0.1 part of antioxidant 1010, 0.1 part of antioxidant 168, and 1 part of 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 feeding port of the twin-screw extruder.

[0030] (c) After melting PMMA205, feed high-pressure inert gas, use high-pressure injection pump to inject from the side feeding port of the extruder, blend and granulate, the extrusion temperature is 250-300°C, and the screw extruder speed is 600-900rpm , after melt extrusion and granulation, a transparent scratch-resistant PC / PMMA alloy material can be obtained. Wherein, the inert gas is carbon dioxide; the inert gas temperature exceeds 31°C, between 31-40°C, and the pressure is...

Embodiment 2

[0031] Example 2 Preparation of 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 part of antioxidant 1010, 0.5 part of antioxidant 168, 0.1 part of ethylene bis stearamide.

[0033] (b) Add L1250Y, Antioxidant 1010, Antioxidant 168 and Ethylene Bis-Stearamide into a mixing mixer for mixing, and feed the resulting mixture through the main feeding port of the twin-screw extruder.

[0034] (c) After melting PMMA205, feed high-pressure inert gas, use high-pressure injection pump to inject from the side feeding port of the extruder, blend and granulate, the extrusion temperature is 250-300°C, and the screw extruder speed is 600-900rpm , after melt extrusion and granulation, a transparent scratch-resistant PC / PMMA alloy material can be obtained. Wherein, the inert gas is nitrogen; the inert gas temperature exceeds 31°C, between 31-40°C, and the pressure is 7.4...

Embodiment 3

[0035] Example 3 Preparation of 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, 0.3 part of ethylene bis stearamide.

[0037] (b) Add L1250Y, Antioxidant 245, Antioxidant 168 and Ethylene Bis-Stearamide into a mixing mixer for mixing, and feed the obtained mixture through the main feeding port of the twin-screw extruder.

[0038] (c) After melting PMMA205, feed high-pressure inert gas, use high-pressure injection pump to inject from the side feeding port of the extruder, blend and granulate, the extrusion temperature is 250-300°C, and the screw extruder speed is 600-900rpm , after melt extrusion and granulation, a transparent scratch-resistant PC / PMMA alloy material can be obtained. Wherein, the inert gas is carbon dioxide and argon; the inert gas temperature exceeds 31°C, between 31-40°C, and the ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Screw diameteraaaaaaaaaa
Melt indexaaaaaaaaaa
Melt fingeraaaaaaaaaa
Login to View More

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C08L69/00C08L33/12
Inventor 柏莲桂李强罗明华辛敏琦
Owner SHANGHAI KUMHO SUNNY PLASTICS
Features
  • Generate Ideas
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com