CN105524445A - PC-PET-based LED heat dissipation material containing modified nano diatomite-carbon nanotubes, and preparation method thereof - Google Patents
PC-PET-based LED heat dissipation material containing modified nano diatomite-carbon nanotubes, and preparation method thereof Download PDFInfo
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- CN105524445A CN105524445A CN201610009117.5A CN201610009117A CN105524445A CN 105524445 A CN105524445 A CN 105524445A CN 201610009117 A CN201610009117 A CN 201610009117A CN 105524445 A CN105524445 A CN 105524445A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L69/00—Compositions of polycarbonates; Compositions of derivatives of polycarbonates
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/64—Heat extraction or cooling elements
- H01L33/641—Heat extraction or cooling elements characterized by the materials
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
- C08L2203/206—Applications use in electrical or conductive gadgets use in coating or encapsulating of electronic parts
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Abstract
The invention discloses a PC-PET-based LED heat dissipation material containing modified nano diatomite-carbon nanotubes, and a preparation method thereof. According to the composite plastic, high-molecular materials such as PC and PET are compounded to form a thermally conductive plastic base material; and fillers such as glass fibers and nano silicon nitride are doped in the base material, such that material comprehensive mechanical performance is improved, and material thermal resistance and ageing resistance are better. With the doped ionic-liquid-modified nano diatomite and carbon nanotube composite powder, nano-powder surface energy can be reduced, the binding and dispersion properties of carbon nanotubes and diatomite can be improved, diatomite thermal conductivity can be improved, and production cost can be reduced. The composite high-thermal-conductivity powder has good compatibility with the high-molecular base material. In combination with a stepwise feeding process, the composite material with an interpenetrating thermal-conductive network structure is prepared. The material has good thermal conductivity and good heat dissipation effect, and has a wide application space in LED packaging.
Description
Technical field
The present invention relates to heat conduction engineering plastics technical field, particularly relate to a kind of PC-PET base LED heat sink material containing modified Nano diatomite-carbon nanotube and preparation method thereof.
Background technology
LED is as the novel light source of a generation, there is efficient, energy-saving and environmental protection, long service life, be easy to safeguard etc. advantage, by the pre-third generation light source for incandescent light and luminescent lamp can be replaced, the working temperature of the light extraction efficiency of LED and life-span and chip has direct relation, heat dissipation problem is the subject matter that restriction packaged LED product improves power and luminous efficiency, the effective means solving LED heat dissipation problem be exactly utilize high heat conduction, high insulation, high permeability material heat is passed fast.
The heat sink material that current LED is commonly used is mainly metal aluminium or stupalith, all there are some defects in actual use in these materials, although such as aluminium base heat sink material has comparatively excellent heat-sinking capability, but its exist the moulding process cycle long, itself there is electroconductibility and the problem such as moulding is single, and although stupalith insulate, but higher than great, shaping difficulty, be unfavorable for batch production, its application is also restricted.
Composite heat-conducting plastics start to be paid close attention in the industry in recent years gradually, first plastics itself have the advantages such as good insulation, lightweight, inexpensive, various shapes, comparatively satisfied thermal conductivity can be obtained after adding the filler of high thermal conductivity wherein, it is lighter than aluminium base heat sink material quality, shaping cycle is shorter, because the filler unit price of high thermal conductivity is more expensive, and existing preparation technology makes the utilization ratio of heat conductive filler low, further increase production cost, therefore, improve existing technique, the utilization ratio improving raw material is the problem that bandit treats result.
Summary of the invention
The object of the invention is exactly the defect in order to make up prior art, provides a kind of PC-PET base LED heat sink material containing modified Nano diatomite-carbon nanotube and preparation method thereof.
The present invention is achieved by the following technical solutions:
A kind of PC-PET base LED heat sink material containing modified Nano diatomite-carbon nanotube, this composite plastic is made up of the raw material of following weight part: PC40-50, PET8-10, styrene-butadiene block copolymer 4-5, Calcium Fluoride (Fluorspan) 0.1-0.2, nano diatomite 8-10, nano-silicon nitride 15-18, glass fibre 4-5, nano-sized iron oxide 1-2, nano ceric oxide 0.1-0.2, low molecule PE wax 2-3, hexafluorophosphate glyoxaline ion liquid 1-1.5, multi-walled carbon nano-tubes 5-6, silane coupling agent 1-2, oxidation inhibitor 0.5-0.6, photostabilizer 0.1-0.2, deionized water 30-40.
Described a kind of PC-PET base LED heat sink material containing modified Nano diatomite-carbon nanotube and preparation method thereof, described preparation method is:
(1) first hexafluorophosphate glyoxaline ion liquid is mixed with deionized water, and oil bath is heated to 50-60 DEG C, constant temperature is uniformly mixed 25-30min subsequently, be warming up to 70-80 DEG C subsequently, drop into nano diatomite, multi-walled carbon nano-tubes, thermostatic ultrasonic stirs 3-4h, stirs after terminating and gained material complete drying is removed moisture, namely obtain ion liquid modified nano diatomite/carbon nano-tube composite powder after gained powder grinding distribution;
(2) drop into granulation in twin screw extruder together after the silane coupling agent high-speed stirring of PC, PET, styrene-butadiene block copolymer, nano-silicon nitride, glass fibre, nano ceric oxide, low molecule PE wax, oxidation inhibitor, photostabilizer and 0.8-1 weight part being mixed, obtain a granulation material for subsequent use;
(3) silane coupling agent of composite granule, other leftover materials and the residual content step (1) prepared is uniformly mixed for subsequent use;
(4) granulation material step (2) prepared is dropped in forcing machine by main spout, and the composite granule of step (3) adds in forcing machine by side spout, and extruding pelletization, cooling obtain the composite heat conducting material for injection moulding.
Advantage of the present invention is: the present invention is with PC, the macromolecular material compounds such as PET are as heat-conducting plastic base-material, and blending glass fibre wherein, the fillers such as nano-silicon nitride, not only increase the comprehensive mechanical property of material, its thermotolerance, ageing resistance is better, and wherein blending through ion liquid modified nano diatomite, carbon nano-tube composite powder can not only reduce nano powder surface energy, improve carbon nanotube and diatomaceous associativity and dispersiveness, improve diatomaceous thermal conductivity, reduce production cost, this compound high conduction powder and polymer base-material also have good consistency, the technique reinforced in conjunction with distribution has finally made the matrix material with IPN heat conduction network structure, possesses good heat transfer, radiating effect, it has wide application space in LED.
Embodiment
This matrix material is made up of the raw material of following weight part: PC40, PET8, styrene butadiene block copolymer 4, Calcium Fluoride (Fluorspan) 0.1, nano diatomite 8, nano-silicon nitride 15, glass fibre 4, nano-sized iron oxide 1, nano ceric oxide 0.1, low molecule PE wax 2, hexafluorophosphate glyoxaline ion liquid 1, multi-walled carbon nano-tubes 5, silane coupling agent 1, oxidation inhibitor 0.5, photostabilizer 0.1, deionized water 30.
The preparation method of this composite plastic is:
(1) first hexafluorophosphate glyoxaline ion liquid is mixed with deionized water, and oil bath is heated to 50 DEG C, constant temperature is uniformly mixed 25min subsequently, be warming up to 70 DEG C subsequently, drop into nano diatomite, multi-walled carbon nano-tubes, thermostatic ultrasonic stirs 3h, stirs after terminating and gained material complete drying is removed moisture, namely obtain ion liquid modified nano diatomite/carbon nano-tube composite powder after gained powder grinding distribution;
(2) drop into granulation in twin screw extruder together after the silane coupling agent high-speed stirring of PC, PET, styrene butadiene block copolymer, nano-silicon nitride, glass fibre, nano ceric oxide, low molecule PE wax, oxidation inhibitor, photostabilizer and 0.8 weight part being mixed, obtain a granulation material for subsequent use;
(3) silane coupling agent of composite granule, other leftover materials and the residual content step (1) prepared is uniformly mixed for subsequent use;
(4) granulation material step (2) prepared is dropped in forcing machine by main spout, and the composite granule of step (3) adds in forcing machine by side spout, and extruding pelletization, cooling obtain the composite heat conducting material for injection moulding.
The performance test results of the composite heat conducting material obtained by the present embodiment is:
| Project | Index |
| Tensile strength (MPa) | 72.4 |
| Flexural strength (MPa) | 194.5 |
| Thermal conductivity (w/mk) | 5.8 |
| Flame retardant rating | UL94-V0 |
| Volume specific resistance (Ω .cm) | ＞10 13 |
Claims (2)
1. the PC-PET base LED heat sink material containing modified Nano diatomite-carbon nanotube, it is characterized in that, this composite plastic is made up of the raw material of following weight part: PC40-50, PET8-10, styrene-butadiene block copolymer 4-5, Calcium Fluoride (Fluorspan) 0.1-0.2, nano diatomite 8-10, nano-silicon nitride 15-18, glass fibre 4-5, nano-sized iron oxide 1-2, nano ceric oxide 0.1-0.2, low molecule PE wax 2-3, hexafluorophosphate glyoxaline ion liquid 1-1.5, multi-walled carbon nano-tubes 5-6, silane coupling agent 1-2, oxidation inhibitor 0.5-0.6, photostabilizer 0.1-0.2, deionized water 30-40.
2. a kind of PC-PET base LED heat sink material containing modified Nano diatomite-carbon nanotube and preparation method thereof as claimed in claim 1, it is characterized in that, described preparation method is:
(1) first hexafluorophosphate glyoxaline ion liquid is mixed with deionized water, and oil bath is heated to 50-60 DEG C, constant temperature is uniformly mixed 25-30min subsequently, be warming up to 70-80 DEG C subsequently, drop into nano diatomite, multi-walled carbon nano-tubes, thermostatic ultrasonic stirs 3-4h, stirs after terminating and gained material complete drying is removed moisture, namely obtain ion liquid modified nano diatomite/carbon nano-tube composite powder after gained powder grinding distribution;
(2) drop into granulation in twin screw extruder together after the silane coupling agent high-speed stirring of PC, PET, styrene-butadiene block copolymer, nano-silicon nitride, glass fibre, nano ceric oxide, low molecule PE wax, oxidation inhibitor, photostabilizer and 0.8-1 weight part being mixed, obtain a granulation material for subsequent use;
(3) silane coupling agent of composite granule, other leftover materials and the residual content step (1) prepared is uniformly mixed for subsequent use;
(4) granulation material step (2) prepared is dropped in forcing machine by main spout, and the composite granule of step (3) adds in forcing machine by side spout, and extruding pelletization, cooling obtain the composite heat conducting material for injection moulding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610009117.5A CN105524445A (en) | 2016-01-04 | 2016-01-04 | PC-PET-based LED heat dissipation material containing modified nano diatomite-carbon nanotubes, and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610009117.5A CN105524445A (en) | 2016-01-04 | 2016-01-04 | PC-PET-based LED heat dissipation material containing modified nano diatomite-carbon nanotubes, and preparation method thereof |
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| CN105524445A true CN105524445A (en) | 2016-04-27 |
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| CN201610009117.5A Pending CN105524445A (en) | 2016-01-04 | 2016-01-04 | PC-PET-based LED heat dissipation material containing modified nano diatomite-carbon nanotubes, and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110922735A (en) * | 2019-11-11 | 2020-03-27 | 天津金发新材料有限公司 | Filled PC composition and preparation method thereof |
| CN113563659A (en) * | 2021-08-24 | 2021-10-29 | 胜利油田胜机石油装备有限公司 | Polyethylene composite material and application thereof in preparation of high-temperature-resistant lining oil pipe |
| CN114773731A (en) * | 2022-04-29 | 2022-07-22 | 苏州润佳高分子材料有限公司 | Antistatic polypropylene plastic and preparation method thereof |
| CN115322641A (en) * | 2022-08-25 | 2022-11-11 | 北京星驰恒动科技发展有限公司 | High-absorptivity stray light inhibition coating and preparation method and application thereof |
Citations (2)
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| CN102585558A (en) * | 2012-01-18 | 2012-07-18 | 大连天宝化学工业有限公司 | Method for preparing high-dispersion high-thermal-conductivity white carbon black by modifying with ionic liquid in supercritical state |
| CN103497411A (en) * | 2013-09-27 | 2014-01-08 | 杭州师范大学 | Flexible high-thermal-conductivity insulating polymer composite and preparation method thereof |
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2016
- 2016-01-04 CN CN201610009117.5A patent/CN105524445A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102585558A (en) * | 2012-01-18 | 2012-07-18 | 大连天宝化学工业有限公司 | Method for preparing high-dispersion high-thermal-conductivity white carbon black by modifying with ionic liquid in supercritical state |
| CN103497411A (en) * | 2013-09-27 | 2014-01-08 | 杭州师范大学 | Flexible high-thermal-conductivity insulating polymer composite and preparation method thereof |
Non-Patent Citations (1)
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| 邱志豪等: "高导热性PC/PET复合材料性质之研究", 《远东科技大学机构典藏》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110922735A (en) * | 2019-11-11 | 2020-03-27 | 天津金发新材料有限公司 | Filled PC composition and preparation method thereof |
| CN113563659A (en) * | 2021-08-24 | 2021-10-29 | 胜利油田胜机石油装备有限公司 | Polyethylene composite material and application thereof in preparation of high-temperature-resistant lining oil pipe |
| CN114773731A (en) * | 2022-04-29 | 2022-07-22 | 苏州润佳高分子材料有限公司 | Antistatic polypropylene plastic and preparation method thereof |
| CN115322641A (en) * | 2022-08-25 | 2022-11-11 | 北京星驰恒动科技发展有限公司 | High-absorptivity stray light inhibition coating and preparation method and application thereof |
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Application publication date: 20160427 |