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Plastic heat-dissipation light-scattering master batch and preparation method thereof

A kind of astigmatism and plastic technology, which is applied in the field of light diffusion materials, can solve the problem that plastic astigmatism masks cannot dissipate heat, and achieve the effect of improving heat conduction and heat dissipation and luminous effect

Active Publication Date: 2014-09-17
KUNSHAN YUNCHENG PLASTIC IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The heat dissipation and astigmatism of the LED point light source directly affect the efficiency of using the light source. In view of the defect that the plastic astigmatism mask of the existing LED light source cannot dissipate heat, the present invention proposes a plastic heat dissipation and astigmatism masterbatch. The plastic heat dissipation and astigmatism masterbatch not only has the function of dispersing the light source effect, and can greatly improve the heat conduction and heat dissipation effect of the plastic mask. The plastic heat dissipation masterbatch is added with PS (polystyrene), PMMA (polymethyl methacrylate), PC (polycarbonate), PP (polypropylene ) and other resins with high light transmittance can be directly thermoformed to prepare various heat dissipation plates and films

Method used

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  • Plastic heat-dissipation light-scattering master batch and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] 1) Prepare 25% of the heat-conducting composition into a slurry with deionized water and add it to a vacuum reactor. The ratio of tin dioxide, zinc oxide, and boric acid in the heat-conducting composition is 10:3:1, and then add 50% of fumed white Carbon black, under the condition of temperature of 70-80°C and vacuum degree of -0.2 MPa, high-speed mixing, stirring and adsorption for 0.5 hours, and then discharging and drying;

[0040] 2) Melt and roast the adsorbent obtained in step 1) in a rotary calciner at a temperature of 800-950°C for 3 minutes to obtain a binary microsphere with high thermal conductivity and astigmatism;

[0041] 3) Put the binary microspheres obtained in step 2), 5% dispersant, and 2% lubricating aid into the disperser mixer, and disperse at a high speed for 10 minutes at 80-100°C, then add 20% matrix resin, and continue Stir for 3min, discharge;

[0042] 4) Send the mixture obtained in step 3) into a screw extruder, melt and disperse through th...

Embodiment 2

[0045] 1) Prepare 30% of the heat-conducting composition into a slurry with deionized water and add it to a vacuum reactor. The ratio of tin dioxide, zinc oxide, and boric acid in the heat-conducting composition is 15:2:0.5, and then add 45% of fumed white carbon black , at a temperature of 70-80°C and a vacuum of -0.2 MPa, high-speed mixing, stirring and adsorption for 1 hour, and then discharge and dry;

[0046] 2) The adsorbent obtained in step 1) was melted and roasted in a rotary calciner at a temperature of 800-950°C for 5 minutes to obtain a binary microsphere with high thermal conductivity and astigmatism;

[0047] 3) Add the binary microspheres obtained in step 2), 5% dispersant, and 1% lubricating aid to the disperser mixer, and disperse at a high speed for 15 minutes at 80-100°C, then add 17% matrix resin, 1 % antioxidant, anti-aging agent, continue to stir for 5min, discharge;

[0048] 4) Send the mixture obtained in step 3) into a screw extruder, melt and dispers...

Embodiment 3

[0051] 1) Prepare 35% of the heat-conducting composition into a slurry with deionized water and add it to a vacuum reactor. The ratio of tin dioxide, zinc oxide, and boric acid in the heat-conducting composition is 12:2.5:0.5, and then add 40% of fumed silica , at a temperature of 70-80°C and a vacuum of -0.2 MPa, high-speed mixing, stirring and adsorption for 0.5 hours, and then discharge and dry;

[0052] 2) Melt and roast the adsorbent obtained in step 1) in a rotary calciner at a temperature of 800-950°C for 3 minutes to obtain a binary microsphere with high thermal conductivity and astigmatism;

[0053] 3) Put the binary microspheres obtained in step 2), 5% dispersant, and 3% lubricating aid into the disperser mixer, disperse at a high speed for 10-20min at 80-100°C, and then add 16.5% K resin SL-803, 0.5% antioxidant and anti-aging agent, continue to stir for 5 minutes, and discharge;

[0054] 4) Send the mixture obtained in step 3) into a screw extruder, melt and dispe...

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Abstract

The invention discloses a plastic heat-dissipation light-scattering master batch and a preparation method thereof. The master batch is composed of the following components in percentage by weight: 40-55% of gas-phase white carbon black, 20-35% of heat-conducting composition, 10-20% of matrix resin, 3-5% of dispersing agent, 1-3% of lubricating assistant and 0-1% of other assistant. The preparation method comprises the following steps: attaching the heat-conducting composition into micropores of the gas-phase white carbon black, sintering to obtain light-scattering two-element microspheres with high heat conductivity, grinding and dispersing with a sand mill, and carrying out melt dispersion and granulation of the high-melting-index K resin to obtain the plastic heat-dissipation light-scattering master batch. The master batch has the heat dissipation effect; and since the light-transmitting heat-conducting composite material is adsorbed and molten in the pores of the gas-phase white carbon black, so that the original light-reflection low-light-transmittance gas-phase white carbon black has light transmittance and higher light scattering performance.

Description

technical field [0001] The invention relates to the field of light-diffusing materials, in particular to a masterbatch with heat dissipation and light-scattering functions for LED light source diffusion and a preparation method thereof. Background technique [0002] LED lighting is a new type of high-efficiency solid light source with light-emitting diodes as the light source. Its power consumption is only 1 / 10 of that of incandescent lamps, and its service life is 100 times that of incandescent lamps. It is energy-saving, long-life, environmentally friendly, and maintenance-free. Features such as easy control, etc., have been fully applied in general lighting, traffic signals, indicator lights, LCD TVs and other fields, and are recognized as one of the most promising lighting energy-saving technologies in the 21st century. However, there are still certain defects in the use of LED light sources, mainly in how to dissipate heat and astigmatism. [0003] LED lamps will gene...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L53/02C08K13/06C08K9/00C08K3/36C08K3/22C08K3/38C08J3/22C08L25/06C08L33/12C08L69/00C08L23/12
Inventor 陈庆曾军堂
Owner KUNSHAN YUNCHENG PLASTIC IND CO LTD
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