Low-temperature-resistance flame-retardant photodiffusion polycarbonate composite material and preparation method thereof

A polycarbonate and composite material technology, which is applied in the field of low temperature resistant flame retardant light diffusing polycarbonate composite materials and its preparation, can solve the problems of application limitation, impact resistance reduction, mechanical properties change, etc., and achieves high haze and Mechanical properties, excellent low temperature properties, the effect of improving low temperature properties

Active Publication Date: 2014-04-16
SHANGHAI CHANGWEI JINCI ENG PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although polycarbonate resin has a certain flame retardancy, it is only UL94V-2. Ordinary light-diffusing PC cannot meet the flame-retardant requirements of thinner optical products, so its flame-retardant performance needs to be further improved
At present, there have been many studies on improving the flame retardant level by adding flame retardants to light-diffusing PC, but the addition of most types of flame retardants sacrifices the high light transmission of light-diffusing PC while improving flame retardancy. High rate, high haze characteristics, the application is gr

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Embodiment 1, preparation of low temperature resistant flame retardant light diffusion polycarbonate composite material

[0031] The following components in parts by weight: 973 parts of PC model 2805, 4 parts of silicone microbead resin TSR-9002, 10 parts of potassium perfluorobutane sulfonate FRMB5010, 2 parts of antioxidant 168, 1 part Antioxidant 1076, 5 parts of long-chain fatty acid polyfunctional ester, 2 parts of light-stabilized 770, 2 parts of ultraviolet absorber UV234 and 1 part of toner are mixed in a high-speed mixer for 3 minutes, and put into the hopper of the twin-screw extruder , through melt extrusion and granulation, the granulation process is as follows: Twin-screw extruder zone 1 temperature 160-180°C, zone 2 temperature 220-240°C, zone 3 temperature 250-270°C, zone 4 temperature 250-270°C, The temperature of the fifth zone is 250-270°C, the temperature of the sixth zone is 250-270°C, the temperature of the seventh zone is 250-270°C, the temperatur...

Embodiment 2

[0032] Embodiment 2, preparation of low temperature resistant flame retardant light diffusion polycarbonate composite material

[0033] The following components in parts by weight: 823 parts of PC of type 2805, 150 parts of silicone copolymerized PCEXL1414T, 4 parts of silicone microbead resin TSR-9002, 10 parts of potassium perfluorobutane sulfonate FRMB5010, 2 parts Antioxidant 168, 1 part of antioxidant 1076, 5 parts of long-chain fatty acid polyfunctional esters, 2 parts of light stabilized 770, 2 parts of ultraviolet absorber UV234 and 1 part of toner were mixed in a high-speed mixer for 3 minutes, and put into double The feeding hopper of the screw extruder is granulated by melt extrusion. The granulation process is as follows: the temperature of the first zone of the twin-screw extruder is 160-180°C, the temperature of the second zone is 220-240°C, the temperature of the third zone is 250-270°C, and the temperature of the fourth zone is 250-270°C. Zone temperature 250-2...

Embodiment 3

[0034]Example 3, Preparation of low temperature resistant flame retardant light diffusing polycarbonate composite material

[0035] The following components in parts by weight: 723 parts of PC of type 2805, 250 parts of silicone copolymerized PCEXL1414T, 4 parts of silicone microbead resin TSR-9002, 10 parts of potassium perfluorobutane sulfonate FRMB5010, 2 parts Antioxidant 168, 1 part of antioxidant 1076, 5 parts of long-chain fatty acid polyfunctional esters, 2 parts of light stabilized 770, 2 parts of ultraviolet absorber UV234 and 1 part of toner were mixed in a high-speed mixer for 3 minutes, and put into double The feeding hopper of the screw extruder is granulated by melt extrusion. The granulation process is as follows: the temperature of the first zone of the twin-screw extruder is 160-180°C, the temperature of the second zone is 220-240°C, the temperature of the third zone is 250-270°C, and the temperature of the fourth zone is 250-270°C. Zone temperature 250-270℃,...

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PUM

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Abstract

The invention discloses a low-temperature-resistance flame-retardant photodiffusion polycarbonate composite material and a preparation method thereof. The polycarbonate composite material comprises the following components in parts by weight: 400-900 parts of polycarbonate resin, 100-500 parts of organosilicone copolymer PC (polycarbonate) resin, 0.5-20 parts of sulfonate flame retardant, 1-20 parts of photo-diffusant, and 5-50 parts of an auxiliary. The preparation method comprises the following steps: uniformly mixing polycarbonate resin, organosilicone copolymer PC resin, a sulfonate flame retardant, a photo-diffusant and an auxiliary in a high-speed mixer; putting the mixture in a feed hopper of a double-screw extruder; and melting, extruding and granulating. The low-temperature-resistance flame-retardant photodiffusion polycarbonate composite material prepared by the method can fulfill high light transmittance, high haze of photodiffusion PC, various processing requirements and mechanical performance, has high flame retardance and excellent low temperature performance, and can be applied to various transparent products in the optical field, in particular applicable to products applied in a rigorous environment.

Description

technical field [0001] The invention relates to the technical field of polycarbonate composite materials, in particular to a low-temperature-resistant flame-retardant light-diffusing polycarbonate composite material and a preparation method thereof. Background technique [0002] At present, the whole society is advocating low-carbon, environmental protection, and energy saving. LED lights will gradually replace incandescent and fluorescent lights due to their power-saving features, but the light emitted by the lamp beads is too strong, which is easy to damage the eyes. Therefore, there is an urgent need for a light-diffusing lampshade to hide lamp erosion and ensure high brightness. Polycarbonate (PC) is a thermoplastic engineering plastic with superior comprehensive performance. It is widely used in Electric lighting and other fields. Therefore, LED light-diffusing lampshades tend to use light-diffusing polycarbonate (PC) resin, which is the future development trend. [...

Claims

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Application Information

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IPC IPC(8): C08L69/00C08L33/12C08L83/04C08K5/42B29C47/92B29B9/06B29C48/92
CPCB29C48/04B29C48/40B29C48/92B29C2948/9259B29C2948/92704B29C2948/92885B29C2948/92895
Inventor 赵志刚朱爱华程方清张剑虞志诚
Owner SHANGHAI CHANGWEI JINCI ENG PLASTIC
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