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A heat-shrinkable tube, its preparation method and its application in LED filament packaging

A technology of heat-shrinkable tubes and parts by weight, which is applied in applications, household appliances, tubular objects, etc., can solve the problems of high material quality requirements, difficult control of product consistency, and high price, so as to improve the color rendering index and protect Color stability, effect of reducing shear force

Active Publication Date: 2016-06-01
大连欧思特科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This process has extremely high requirements on the quality of the silica gel material, so the price is expensive. Generally, there are two or three phosphors mixed with the silica gel. Once the mixing is uneven, the consistency of the product is difficult to control, resulting in a large amount of waste products.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Take 100kg of sarin resin (melt index: 2.8g / 10min), 18kg of fluorescent powder mixture (among them red nitride phosphor powder with emission peak wavelength at 640nm accounts for about 2.7 kg; orange red nitride phosphor powder with emission peak wavelength at 600nm Phosphor powder accounts for about 0.9 kg; yellow-green aluminate phosphor powder with emission peak wavelength of 525nm accounts for about 14.4 kg), silicone masterbatch 5 kg, antioxidant 0.3 kg (antioxidant 1010), light stabilizer Add 0.15kg and 0.8kg of paraffin oil into the high-speed mixer in turn, and mix at a high speed for 20 minutes under the condition that the temperature of the material does not exceed 80°C; then put the mixed masterbatch into the twin-screw granulator, and make it Granules, the material is stored in a homogenizing storage tank with a stirring device. After the whole batch of material is ready, the masterbatch is put into the twin-screw granulator for the second time, and then gran...

Embodiment 2

[0030]Take 100kg of sarin resin (melt index is 2.8g / 10min), 18kg of fluorescent powder mixture (among them red nitride phosphor powder with emission peak wavelength at 640nm accounts for about 1.44 kg; orange red nitride phosphor powder with emission peak wavelength at 600nm Phosphor powder accounts for about 1.8 kg; yellow-green aluminate phosphor powder with emission peak wavelength of 525nm accounts for about 14.76 kg), silicone masterbatch 5 kg, antioxidant 0.3 kg (antioxidant 1010), light stabilizer Add 0.15kg and 0.8kg of paraffin oil into the high-speed mixer in turn, and mix at a high speed for 20 minutes under the condition that the temperature of the material does not exceed 80°C; then put the mixed masterbatch into the twin-screw granulator, and make it Granules, the material is stored in a homogenizing storage tank with a stirring device. After the whole batch of material is ready, the masterbatch is put into the twin-screw granulator for the second time, and then g...

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PUM

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Abstract

The invention discloses a thermal shrinkable tube and a preparation method thereof as well as an application of the thermal shrinkable tube in LED filament packaging. The thermal shrinkable tube is prepared from such raw materials as a high-molecular polymer, a fluorescent powder, silicone master-batch, an antioxidant and a lubricant by virtue of the steps of mixing and pelletizing, extrusion molding, irradiation crosslinking, expanding and setting, slitting and the like. The thermal shrinkable tube is applied to the filament packaging field to replace the production process of thermocuring by use of fluorescent powder mixed silica gel for the LED filament of a bulb lamp in the prior art, and therefore, the cost can be greatly reduced; meanwhile, the problems of high rejection rate of packaged filaments, secondary screening required and the like due to uneven mixing of the fluorescent powder mixed silica gel in the prior art can be effectively solved.

Description

technical field [0001] The invention relates to a polymer material, in particular to a heat-shrinkable tube, a preparation method and an application in LED filament packaging. Background technique [0002] In the more than 100 years since Edison invented the incandescent lamp, the lamp has undergone many "evolutions". Today in the market we can buy incandescent lamps, energy-saving lamps and LED lamps as home lighting. The incandescent lamp heats the filament to an incandescent state, and uses thermal radiation to emit visible light. The light color and light collection performance of the incandescent lamp are good, but only 10% of the energy of the incandescent lamp will become light, and 90% will be converted into heat energy. Due to the high temperature of the filament, the evaporation is also fast, so the life is short. In recent years, countries around the world have successively formulated a road map for phasing out incandescent lamps. In the 1970s, energy-saving la...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/08C08L83/04C08K13/02C08K3/28C08K3/24C08K5/134C08J3/24B29D23/00B29C47/00H01L33/48H01L33/56
CPCB29C48/00C08J3/24C08J3/28C08J2323/08C08L23/0876C08L2203/206C08L2205/03H01L33/56C08L83/04C08L91/06C08K13/02C08K5/1345C08K3/28C08K3/24
Inventor 王睿
Owner 大连欧思特科技有限公司