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Heat-conducting nylon composite special for injection molding-grade LED lamps and preparation method thereof

A nylon composite material, LED lamp technology, applied in heat exchange materials, chemical instruments and methods, etc., can solve the problems of weak thermal conductivity, large amount of thermally conductive fillers, complicated processing technology, etc., to achieve improved thermal conductivity and excellent thermal conductivity. Conductive ability, the effect of simple preparation method

Active Publication Date: 2017-03-08
ZHEJIANG XINLI NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the heat dissipation system of LED lighting products mainly uses aluminum as the heat-conducting substrate. However, aluminum has problems such as heavy weight, low safety performance, and complicated processing technology. It is gradually replaced by heat-conducting plastics. LED lighting products use heat-conducting plastics and traditional aluminum materials. In comparison, it has the advantages of light weight, environmental protection and safety, high degree of design freedom, convenient processing, simpler starting system, and reduced system cost.
However, the current heat-conducting plastics have weak thermal conductivity, the surface of the heat-conducting filler material needs to be treated or modified, the operation is more troublesome, and the amount of heat-conducting filler added is large, there are problems such as complicated process and rising cost.

Method used

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  • Heat-conducting nylon composite special for injection molding-grade LED lamps and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The composition ratio of the preparation of a thermally conductive nylon composite material for injection molding grade LED lamps:

[0025] Attapulgite / alumina 20.0 parts, 5.0 parts of Japanese Kao EBS as dispersant, 1.0 part of fumed silica as dispersant, 1.0 part of nano-silica with an average particle size of 600nm as other additives, 1.0 part of nano-silica with an average particle size of 600nm, and PA6 Huajian nylon 73.0 parts.

[0026] First, vacuum dry PA6 at 120°C for 4 hours, then physically mix the raw materials according to the above ratio, and then extrude and granulate with twin-screw, the processing temperature is 255°C, and the rotation speed is 250r / min.

Embodiment 2

[0028] The composition ratio of the preparation of a thermally conductive nylon composite material for injection molding grade LED lamps:

[0029] Attapulgite / alumina 25.0 parts, 5.0 parts of Japanese Kao EBS as dispersant, 1.0 part of fumed silica as auxiliary dispersant, 1.0 part of nano-silica with an average particle size of 600nm as other additives, and 1.0 part of nano-silica with an average particle size of 600nm, PA6 Huajian nylon 68.0 parts.

[0030] First, vacuum dry PA6 at 120°C for 4 hours, then physically mix the raw materials according to the above ratio, and then extrude and granulate with twin-screw, the processing temperature is 255°C, and the rotation speed is 250r / min.

Embodiment 3

[0032] The composition ratio of the preparation of a thermally conductive nylon composite material for injection molding grade LED lamps:

[0033] Attapulgite / alumina 30.0 parts, 5.0 parts of Japanese Kao EBS as dispersant, 1.0 part of fumed silica as auxiliary dispersant, 1.0 part of nano-silica with an average particle size of 600nm as other additives, 1.0 part of nano-silica with an average particle size of 600nm, and PA6 Huajian nylon 63.0 parts.

[0034] First, vacuum dry PA6 at 120°C for 4 hours, then physically mix the raw materials according to the above ratio, and then extrude and granulate with twin-screw, the processing temperature is 255°C, and the rotation speed is 250r / min.

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Abstract

The invention discloses heat-conducting nylon composite special for injection molding-grade LED lamps and a preparation method thereof. The preparation method comprises the following steps: carrying out twin-screw extrusion on 5-50 parts by weight of attapulgite / aluminum oxide composite, 5-10 parts by weight of a dispersant, 0.5-5 parts by weight of a dispersant, 0-3 parts by weight of other aids and 75-85 parts by weight of matrix PA6; and granulating to obtain the heat-conducting nylon composite special for injection molding-grade LED lamps. The composite has excellent heat conductivity, is up to 1.0-2.2 W / M.K in inter-board heat conductivity coefficient, and is up to 10-25 W / M.K in inter-board heat conduction rate coefficient.

Description

technical field [0001] The invention relates to a special heat-conducting nylon composite material for injection molding grade LED lamps and a preparation method thereof. Background technique [0002] When LED lighting products are in use, the heat generated by the light source must be exported in time, otherwise the temperature rise of the LED junction will affect the light efficiency and service life of the lamp. Once the junction temperature of the LED exceeds the maximum critical temperature that the device can withstand, the LED’s The light output characteristics will be permanently degraded. At present, the heat dissipation system of LED lighting products mainly uses aluminum as the heat-conducting substrate. However, aluminum has problems such as heavy weight, low safety performance, and complicated processing technology. It is gradually replaced by heat-conducting plastics. LED lighting products use heat-conducting plastics and traditional aluminum materials. In com...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/02C08K13/04C08K7/10C08K3/34C08K3/22C08K5/20C08K3/36C09K5/14
CPCC08K3/22C08K3/346C08K3/36C08K5/20C08K7/10C08K13/04C08K2003/2227C08K2201/011C08L2203/20C09K5/14C08L77/02
Inventor 陈培陈小鹏叶耀挺
Owner ZHEJIANG XINLI NEW MATERIAL CO LTD
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