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High flame resistance transparent light diffusion polycarbonate and preparation method thereof

A light diffusion and high flame retardant technology, applied in the field of high flame retardant transparent light diffusion PC and its preparation, can solve the problems of reducing the light transmission performance and haze of PC, and achieve good flame retardant effect, good dispersion, and small amount of addition Effect

Inactive Publication Date: 2011-06-08
SHENZHEN KEJU NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the existing flame retardant system, there are mainly two types of phosphorus-based flame retardants and bromine-based flame retardants. These two types of flame retardants are used in PC. Reduced light transmittance and haze of PC

Method used

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  • High flame resistance transparent light diffusion polycarbonate and preparation method thereof
  • High flame resistance transparent light diffusion polycarbonate and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Mix the diffusing agent 0.3% diffusing agent, EBS diffusing powder 0.3% and flame retardant 0.2% in a plastic container by weight, and then mix PC engineering plastics 98.4%, white oil 0.2% and color protection agent 0.2% in another Mix the plastic container evenly, then put the mixed scattering agent, engineering plastic and blue powder 0.4% into the high-speed mixing container, and mix at high and low speed for 3-5min at room temperature. Afterwards, the mixed materials are put into the hopper of the twin-screw extruder, melted and blended, extruded and granulated to form a composite material. Among them, the processing temperature settings of each zone of the screw are: the temperature of the first zone is 160-180°C, the temperature of the second zone is 240-260°C, the temperature of the third zone is 270-280°C, the temperature of the fourth zone is 270-280°C, the temperature of the fifth zone is 270-280°C, The temperature of the sixth zone is 270-280°C, the temperat...

Embodiment 2

[0030] Mix the diffusing agent 0.5% diffusing agent, EBS diffusing powder 0.3% and flame retardant 0.3% in a plastic container by weight, and then mix PC engineering plastics 98.1%, white oil 0.2% and color protection agent 0.3% in another Mix the plastic container evenly, then put the mixed light-dispersing agent, engineering plastic and blue powder 0.3% into the high-speed mixing container, and mix at high and low speed for 3-5min at room temperature. Afterwards, the mixed materials are put into the hopper of the twin-screw extruder, melted and blended, extruded and granulated to form a composite material. Among them, the processing temperature settings of each zone of the screw are: the temperature of the first zone is 160-180°C, the temperature of the second zone is 240-260°C, the temperature of the third zone is 270-280°C, the temperature of the fourth zone is 270-280°C, the temperature of the fifth zone is 270-280°C, The temperature of the sixth zone is 270-280°C, the te...

Embodiment 3

[0032] Mix the diffusing agent 0.8% diffusing agent, EBS diffusing powder 0.4% and flame retardant 0.4% in a plastic container by weight, and then mix PC engineering plastics 97.3%, white oil 0.2% and color protection agent 0.4% in another Mix the plastic container evenly, then put the mixed light-dispersing agent, engineering plastics and blue powder 0.5% into the high-speed mixing container, and mix at high and low speed for 3-5min at room temperature. Afterwards, the mixed materials are put into the hopper of the twin-screw extruder, melted and blended, extruded and granulated to form a composite material. Among them, the processing temperature settings of each zone of the screw are: the temperature of the first zone is 160-180°C, the temperature of the second zone is 240-260°C, the temperature of the third zone is 270-280°C, the temperature of the fourth zone is 270-280°C, the temperature of the fifth zone is 270-280°C, The temperature of the sixth zone is 270-280°C, the t...

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Abstract

The invention discloses high flame resistance transparent light diffusion polycarbonate (PC) and a preparation method thereof. The PC comprises the following components by weight percent: 97-99% of engineering plastic, 0-1% of light diffusion agent, 0.3-0.7% of dispersant, 0.2-0.6% of color protectant, 0.2-0.6% of fire retardant and 0.2-0.8% of other additives. The PC uses engineering plastic PC as main body; and the light diffusion agent of organic resin microsphere, fluoride fire retardant, color protectant and other additives are added in the main body to perform melting and blending, and extruding and granulating. The prepared high flame resistance transparent light diffusion PC can be used to prepare various transparent optical products in the optical field, the PC is environmentally friendly and has flame resistance, high safety performance and excellent physical mechanical propertics. The preparation method of the high flame resistance transparent light diffusion PC comprises the following process steps: firstly mixing the raw materials according to a certain ratio, secondly sending the mixture in a plastic extruder, and controlling the temperature to 250-300 DEG C to granulate.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a highly flame-retardant transparent light-diffusing PC and a preparation method thereof. Background technique [0002] At present, the environmentally friendly light-diffusing polycarbonate that does not use bromine-based or phosphorus-based flame retardants has strong flame retardancy, but if it is to be made into thinner optical products, it needs to further improve its flame-retardant performance. [0003] In the existing flame retardant system, there are mainly two types of phosphorus-based flame retardants and bromine-based flame retardants. These two types of flame retardants are used in PC. Although they can greatly enhance the flame-retardant performance of PC, they are greatly It reduces the light transmission performance and haze of PC. [0004] On the premise of not reducing the light transmittance and various physical properties of PC, finding a high-effic...

Claims

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Application Information

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IPC IPC(8): C08L69/00C08L33/12C08K5/103C08K5/20B29C47/92B29C48/92
CPCB29C48/04B29C48/875B29C48/92B29C2948/92514B29C2948/92561B29C2948/92704B29C2948/92895B29C2948/92904
Inventor 徐东徐永刘洁
Owner SHENZHEN KEJU NEW MATERIAL
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