Transparent toughened light-diffusion polymethylmethacrylate material and preparation method for same

A technology of polymethyl methacrylate and light diffusion, which is applied in the field of polymer materials, can solve the problems of PMMA resin such as low extensibility, poor toughness, difficult to balance toughness and transparency, and achieve high transparency and expand the application range.

Inactive Publication Date: 2012-07-25
SHENZHEN KEJU NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, due to the low elongation and poor toughness of PMMA resin, its further application is limited. It is difficult to balance toughness and transparency with general blending and toughening modification, and the haze and light transmittance of some optical parts are different. There are special requirements, so the development of transparent and toughened light-diffusing PMMA has become one of the development directions of modified PMMA

Method used

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  • Transparent toughened light-diffusion polymethylmethacrylate material and preparation method for same
  • Transparent toughened light-diffusion polymethylmethacrylate material and preparation method for same
  • Transparent toughened light-diffusion polymethylmethacrylate material and preparation method for same

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Embodiment 1

[0018] The transparent and toughened light-diffusing polymethyl methacrylate material in this embodiment is composed of the following components by weight percentage:

[0019] PMMA resin 85%, toughening agent 13.5%, light diffusing agent (MS05) 0.5%, antioxidant 0.3%, lubricant 0.7%.

[0020] Its preparation method is as follows:

[0021] Step 1, each component is weighed by the above-mentioned percentage by weight;

[0022] Step 2, each component that takes by weighing is mixed 3min in the high-speed mixer, and the high-speed mixer rotating speed is 800 rpm;

[0023] Step 3, the mixed material is placed in a twin-screw extruder, melted and reacted, extruded and granulated; the process conditions of the twin-screw extruder are:

[0024] The temperature in the first zone is 190°C, the temperature in the second zone is 200°C, the temperature in the third zone is 210°C, the temperature in the fourth zone is 200°C, the melt pressure is 8MPa, and the vacuum degree is -0.03MPa.

Embodiment 2

[0026] The transparent and toughened light-diffusing polymethyl methacrylate material in this embodiment is composed of the following components by weight percentage:

[0027] PMMA resin 75%, toughening agent 23%, light diffusing agent (MS05) 1%, antioxidant 0.3%, lubricant 0.7%.

[0028] Its preparation method is as follows:

[0029] Step 1, each component is weighed by the above-mentioned percentage by weight;

[0030] Step 2, mixing each component weighed in a high-speed mixer for 5min, and the speed of the high-speed mixer is 800 rpm;

[0031] Step 3, the mixed material is placed in a twin-screw extruder, melted and reacted, extruded and granulated; the process conditions of the twin-screw extruder are:

[0032] The temperature in the first zone is 200°C, the temperature in the second zone is 210°C, the temperature in the third zone is 220°C, the temperature in the fourth zone is 210°C, the melt pressure is 10MPa, and the vacuum degree is -0.06MPa.

Embodiment 3

[0034] The transparent and toughened light-diffusing polymethyl methacrylate material in this embodiment is composed of the following components by weight percentage:

[0035] PMMA resin 65%, toughening agent 32.5%, light diffusing agent (MS05) 1.5%, antioxidant 0.3%, lubricant 0.7%.

[0036] Its preparation method is as follows:

[0037] Step 1, each component is weighed by the above-mentioned percentage by weight;

[0038] Step 2, mixing each component weighed in a high-speed mixer for 4min, and the speed of the high-speed mixer is 800 rpm;

[0039] Step 3, the mixed material is placed in a twin-screw extruder, melted and reacted, extruded and granulated; the process conditions of the twin-screw extruder are:

[0040] The temperature in the first zone is 200°C, the temperature in the second zone is 205°C, the temperature in the third zone is 215°C, the temperature in the fourth zone is 210°C, the melt pressure is 12MPa, and the vacuum degree is -0.04MPa.

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Abstract

The invention discloses a transparent toughened light-diffusion polymethylmethacrylate material and a preparation method for the same. Components of the transparent toughened light-diffusion polymethylmethacrylate material comprise, in weight percentage, 65-85% of PMMA (polymethylmethacrylate) resin, 10-34% of toughening agent, 0.02-2% of light diffusing agent, 0.1-1% of antioxidant and 0.5-3% of lubricant. The transparent toughened light-diffusion polymethylmethacrylate material is high in toughness, transparency and haze, and is capable of meeting comprehensive requirements of optical parts on toughness, transparency and haze, and application range of PMMA is widened.

Description

[technical field] [0001] The invention relates to the field of polymer materials, in particular to a transparent and toughened light-diffusing polymethyl methacrylate material and a preparation method thereof. [Background technique] [0002] PMMA (PolymethylMethacrylate, polymethyl methacrylate) is a rigid, hard, colorless and transparent material with a small refractive index of about 1.49, a light transmittance of 92%, and a haze of no more than 2%. It is a high-quality organic transparent material with weather resistance Excellent, widely used in aerospace, automobile industry, household appliances, electronic instrument industry. [0003] However, due to the low elongation and poor toughness of PMMA resin, its further application is limited. It is difficult to balance toughness and transparency with general blending and toughening modification, and the haze and light transmittance of some optical parts are different. There are special requirements, so the development of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L33/12C08L51/00C08K5/524C08K5/13C08K5/098B29B9/06B29C47/92B29C48/92
CPCB29C48/04B29C48/40B29C48/875B29C48/92B29C2948/92514B29C2948/92704B29C2948/92895
Inventor 徐东徐永安林林
Owner SHENZHEN KEJU NEW MATERIAL
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