CN102977599B - Thermal conductive material used for light-emitting diode (LED) and preparation method thereof - Google Patents
Thermal conductive material used for light-emitting diode (LED) and preparation method thereof Download PDFInfo
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Abstract
The invention discloses thermal conductive material used for a light-emitting diode (LED) and a preparation method of the conductive material used for the LED. The material comprises, by weight, 40-70% of nylon 66, 10-30% of aluminum nitride powder, 1-10% of aluminum powder, 10-15% of fire retardant, 2-4% of silane coupling agents, 0.2-0.5% of lubricant, and 0.2-0.5% of antioxidants. The invention further relates to the preparation method for the conductive material used for the LED. The preparation method includes the following steps: throwing the nylon 66 and the aluminum nitride powder into a high mixing machine, adding the silane coupling agents and then mixing evenly; adding the aluminum powder, the fire retardant, the lubricant and the antioxidants and mixing evenly; extruding prilling through a double-screw extruder at temperature of 240-260 DEG C. The thermal conductive material used for the LED is low in cost and good in thermal conductivity and thermal dissipation. Meanwhile, filling of the aluminum powder is adopted, and thus the thermal conductivity coefficient is greatly promoted, heat resistant temperature is substantially increased compared with heat resistant temperature of acrylonitrile butadiene styrene (ABS), the cost is substantially lowered compared with the cost of material including polyphenylene sulfite (PPS), and application prospects are good.
Description
Technical field
The invention belongs to insulating heat-conduction material field, be specifically related to a kind of for LED thermal conducting material and preparation method thereof.
Background technology
Along with the development of the civilian and commercial illumination of LED, with plastics replace the production efficiency of cast aluminium and economic worth more and more obvious.LED is when opto-electronic conversion, and more than 85% is all converted into heat energy, only has sub-fraction to be converted into light, for illumination.LED PN junction carries out opto-electronic conversion, and PN junction can not bear this part heat at all, and special technique need be adopted to solve the outlet of LED light source heat.There are some researches show, LED junction temperature often raises 2 DEG C, and device reliability decline 10%, LED junction temperature reaches 120 DEG C, and luminous intensity just declines about 35%, so LED junction temperature must control within 110 DEG C.
Dispel the heat outside the associated materials that relates to for LED component, except crystal-bonding adhesive, substrate, conductive resin, most important has been exactly LED light source or light fixture radiating shell material., although lighter weight, thermal conductivity are good, all there is great deficiency in housing insulativity, flame retardant resistance, deformation resistance, erosion resistance in the Aluminium Radiator at present after main employing anodizing.
Heat conduction and the insulation effect of current heat-conducting plastic are not satisfactory, and adopt the Cost Problems of the base materials such as PA46, PPS, adopt the problem such as heat-resisting of ABS substrate all to govern application and the popularization of heat-conducting plastic.Heat conduction ABS adopts ABS base-material and aluminium nitride powder and auxiliary agent blended, sees " insulating heat-conductive ABS composite material of doped aluminum nitride and preparation method thereof " patent (CN102408663A).Overcome the problem that the thermal conductivity of thermally conductive material in the market and insulation effect restrict contradiction mutually, heat-conducting effect and insulation effect improve simultaneously, and cost is controlled preferably, can better promote to mould the application for aluminium.
Prior art is compared, and the present invention has following beneficial effect: low cost of the present invention, thermal conductivity are high, can meet the cooling requirements of differing materials.The thermal conductivity of common plastics is generally at below 0.5W/m.k, KISCOM Company Material of Japan thermal conductivity reaches 3W/m.k, and synergy can be played within the scope of each component and certain content thereof in the present composition, create beyond thought technique effect, make thermally conductive material thermal conductivity of the present invention to reach 10W/m.k; Meanwhile, the present invention adopts aluminium powder to fill, and improves thermal conductivity significantly, and plastic grain product can be used for the injection moulding of LED heat radiating cup, and heat resisting temperature comparatively ABS significantly improves, and the cost comparatively material such as PPS significantly reduces, and has good application prospect.
Summary of the invention
Object of the present invention is exactly the deficiency existed to overcome above-mentioned prior art, provides a kind of for LED thermally conductive material and preparation method thereof.The present invention, by adding aluminum nitride powder, aluminium powder composition and the allotment to two components, improves the thermal conductivity of material, thus will improve electricity and be converted to the ratio of light, improves the utilization ratio of light.Cost of the present invention is low, and step is simple, easily operates, energy-conserving and environment-protective, has broad application prospects.
First aspect, the present invention relates to a kind of thermal conducting material for LED, comprises each component of following weight percent:
Nylon66 fiber 40 ~ 70%,
Aluminium nitride powder 10 ~ 30%,
Aluminium powder 1 ~ 10%,
Fire retardant 10 ~ 15%,
Silane coupling agent 2 ~ 4%,
Lubricant 0.2 ~ 0.5%,
Oxidation inhibitor 0.2 ~ 0.5%.
Preferably, the described thermal conducting material for LED comprises each component of following weight percent:
Nylon66 fiber 45 ~ 59%,
Aluminium nitride powder 15 ~ 30%,
Aluminium powder 4 ~ 6%,
Phosphorus flame retardant 10 ~ 15%,
Silane coupling agent 2 ~ 4%,
Lubricant 0.2 ~ 0.5%,
Oxidation inhibitor 0.2 ~ 0.5%.
Preferably, the described thermal conducting material for LED comprises each component of following weight percent:
Nylon66 fiber 46%,
Aluminium nitride powder 30%,
Aluminium powder 4%,
Phosphorus flame retardant 15%,
Silane coupling agent 4%,
Lubricant 0.5%,
Oxidation inhibitor 0.5%.
Preferably, described fire retardant is the OP1230 of brominated epoxy, TDE or Clariant Corporation.Described OP1230 is halogen-free flame retardants, this halogen-free flame retardants is produced by German Clariant Corporation (Clariant AG), model is ExolitOP1230, chemical structure is phosphorus contained multicomponent alcohols, this fire retardant does not contain halogen, flame-retardant V 0-stage, more environmental protection, can according to the performance requriements allotment nylon content of product, the LED radiator meeting different capacity uses; Product rigidity and toughness have better balance, have higher cost performance and wider use range; Very environmental protection simultaneously, has better consistency with all the other materials, and the mechanical property of material is better, best results.Brominated epoxy and TDE contain halogen, and flame retarding efficiency is higher.
Preferably, described silane coupling agent is KH560, KH570 or KH792.Described KH560 is γ-(2,3-epoxy third oxygen) propyl trimethoxy silicane, and this molecular formula is CH
2-CH (O) CH
2-O (CH
2) 3Si (OCH
3)
3; Described KH570 is γ-methacryloxypropyl trimethoxy silane, for inorganic filler surface process, improve mineral filler, ground and resin bounding force to improve its physicals, especially the performance such as physical strength, water-repellancy, electric property, thermotolerance of matrix material, and under hygrometric state, have higher conservation rate; Described KH792 is N-(β mono-aminoethyl)-γ-aminopropyl front three (second) TMOS.
Preferably, described lubricant is ethylene bis stearamide, oleylamide or butyl stearate.Lubricant can improve plastic working mobility, and improve product surface smooth finish, the soft and smooth degree of luminance brightness and surface and article removal, enhance productivity.
Preferably, described oxidation inhibitor is antioxidant 1010 or irgasfos 168.Described antioxidant 1010 is four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester, described irgasfos 168 is three [2.4-di-tert-butyl-phenyl] phosphorous acid ester, and the effect of oxidation inhibitor can prevent from being oxidized during materials processing causing performance degradation.
Second aspect, the invention still further relates to a kind of method preparing the aforementioned thermal conducting material for LED, comprise the steps: nylon66 fiber, aluminium nitride powder drops into high mixer, add after silane coupling agent mixes, add aluminium powder again, after fire retardant, lubricant, oxidation inhibitor mixes, under 240 ~ 260 DEG C of conditions, use twin screw extruder extruding pelletization.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in detail.Following examples will contribute to those skilled in the art and understand the present invention further, but not limit the present invention in any form.It should be pointed out that to those skilled in the art, without departing from the inventive concept of the premise, some distortion and improvement can also be made.These all belong to protection scope of the present invention.
comparative example 1-2
The preparation method that comparative example 1-2 each provides thermal conducting material comprises the steps: to get each component respectively according to the weight percent shown in each table of following comparative example, by nylon66 fiber, aluminium nitride powder drops into high mixer, add after silane coupling agent mixes, add aluminium powder again, after fire retardant, lubricant, oxidation inhibitor mixes, under 240 ~ 260 DEG C of conditions, use twin screw extruder extruding pelletization.
Table 1
| Comparative example 1 | Component | Concrete material | Content |
| 1 | Nylon66 fiber | The sub-24FE2K in sieve ground | 80 |
| 2 | Aluminium nitride powder | Tieling moral contains Destek020MS | 9 |
| 3 | Aluminium powder | Star platinum connection 6300 | 0.1 |
| 4 | Fire retardant | Clariant OP1230 | 9 |
| 5 | Silane coupling agent | Nanjing is chemical industry KH560 forward | 1.7 |
| 6 | Lubricant | Samsung B-50 | 0.1 |
| 7 | Oxidation inhibitor | Antioxidant 1010 | 0.1 |
Table 2
| Comparative example 2 | Component | Concrete material | Content |
| 1 | Nylon66 fiber | The sub-24FE2K in sieve ground | 20 |
| 2 | Aluminium nitride powder | Tieling moral contains Destek020MS | 38 |
| 3 | Aluminium powder | Star platinum connection 6300 | 15 |
| 4 | Fire retardant | Clariant OP1230 | 20 |
| 5 | Silane coupling agent | Nanjing is chemical industry KH560 forward | 5 |
| 6 | Lubricant | Samsung B-50 | 1 |
| 7 | Oxidation inhibitor | Antioxidant 1010 | 1 |
embodiment 1-6
Embodiment 1 ~ 6 each provides the thermal conducting material for LED, each component is got respectively according to the weight percent content shown in table each in embodiment, comprise the steps: nylon66 fiber for the preparation method of the thermal conducting material of LED in each embodiment, aluminium nitride powder drops into high mixer, add after silane coupling agent mixes, add aluminium powder again, after fire retardant, lubricant, oxidation inhibitor mixes, under 240 ~ 260 DEG C of conditions, use twin screw extruder extruding pelletization.
The Samsung B-50 that embodiment 1 ~ 6 adopts is a ethylene bis stearamide of Samsung chemical production, chemical name N, N '-ethylene bis stearamide, this compound is hard and crisp white high melting-point wax, its industrial goods are the fine particle of yellowish, nontoxic, have no side effect to human body, be insoluble to most of solvent under normal temperature, soda acid and water medium are stablized.
Table 3
| Embodiment 1 | Component | Concrete material | Content |
| 1 | Nylon66 fiber | The sub-24FE2K in sieve ground | 40 |
| 2 | Aluminium nitride powder | Tieling moral contains Destek020MS | 30 |
| 3 | Aluminium powder | Star platinum connection 6300 | 10 |
| 4 | Fire retardant | Clariant OP1230 | 15 |
| 5 | Silane coupling agent | Nanjing is chemical industry KH560 forward | 4 |
| 6 | Lubricant | Samsung B-50 | 0.5 |
| 7 | Oxidation inhibitor | Antioxidant 1010 | 0.5 |
Table 4
| Embodiment 2 | Component | Concrete material | Content |
| 1 | Nylon66 fiber | The sub-24FE2K in sieve ground | 70 |
| 2 | Aluminium nitride powder | Tieling moral contains Destek020MS | 10 |
| 3 | Aluminium powder | Star platinum connection 6300 | 7.6 |
| 4 | Fire retardant | Oil of SPC TDE | 10 |
| 5 | Silane coupling agent | Nanjing is chemical industry KH560 forward | 2 |
| 6 | Lubricant | Samsung B-50 | 0.2 |
| 7 | Oxidation inhibitor | Antioxidant 1010 | 0.2 |
Table 5
| Embodiment 3 | Component | Concrete material | Content |
| 1 | Nylon66 fiber | The sub-24FE2K in sieve ground | 45 |
| 2 | Aluminium nitride powder | Tieling moral contains Destek020MS | 29 |
| 3 | Aluminium powder | Star platinum connection 6300 | 6 |
| 4 | Fire retardant | Clariant OP1230 | 15 |
| 5 | Silane coupling agent | Nanjing is chemical industry KH560 forward | 4 |
| 6 | Lubricant | Samsung B-50 | 0.5 |
| 7 | Oxidation inhibitor | Antioxidant 1010 | 0.5 |
Table 6
| Embodiment 4 | Component | Concrete material | Content |
| 1 | Nylon66 fiber | The sub-24FE2K in sieve ground | 59 |
| 2 | Aluminium nitride powder | Tieling moral contains Destek020MS | 24.6 |
| 3 | Aluminium powder | Star platinum connection 6300 | 4 |
| 4 | Fire retardant | Clariant OP1230 | 10 |
| 5 | Silane coupling agent | Nanjing is chemical industry KH560 forward | 2 |
| 6 | Lubricant | Samsung B-50 | 0.2 |
| 7 | Oxidation inhibitor | Antioxidant 1010 | 0.2 |
Table 7
| Embodiment 5 | Component | Concrete material | Content |
| 1 | Nylon66 fiber | The sub-24FE2K in sieve ground | 46 |
| 2 | Aluminium nitride powder | Tieling moral contains Destek020MS | 30 |
| 3 | Aluminium powder | Star platinum connection 6300 | 5 |
| 4 | Fire retardant | Oil of SPC TDE | 14 |
| 5 | Silane coupling agent | Nanjing is chemical industry KH570 forward | 4 |
| 6 | Lubricant | Samsung B-50 | 0.5 |
| 7 | Oxidation inhibitor | Irgasfos 168 | 0.5 |
Table 8
| Embodiment 6 | Component | Concrete material | Content |
| 1 | Nylon66 fiber | The sub-24FE2K in sieve ground | 70 |
| 2 | Aluminium nitride powder | Tieling moral contains Destek020MS | 15 |
| 3 | Aluminium powder | Star platinum connection 6300 | 1 |
| 4 | Fire retardant | Brominated epoxy | 10.2 |
| 5 | Silane coupling agent | Nanjing is chemical industry KH792 forward | 3 |
| 6 | Lubricant | Samsung B-50 | 0.4 |
| 7 | Oxidation inhibitor | Irgasfos 168 | 0.4 |
implementation result
Carried out the test of thermal conductivity to the result of above embodiment and comparative example, it the results are shown in Table shown in 9:
Table 9
In sum, material thermal conductivity of the present invention can reach 10W/m.k, is greatly better than the same type of material of prior art; Adopt aluminium powder to fill in the preparation, thermal conductivity improves greatly, and be the method that current all thermally conductive materials do not adopt, heat resisting temperature comparatively ABS significantly improves simultaneously, and the cost comparatively material such as PPS significantly reduces.
Above specific embodiments of the invention are described.It is to be appreciated that the present invention is not limited to above-mentioned particular implementation, those skilled in the art can make various distortion or amendment within the scope of the claims, and this does not affect flesh and blood of the present invention.
Claims (5)
1. for a thermal conducting material of LED, it is characterized in that, comprise each component of following weight percent:
described fire retardant is the OP1230 of brominated epoxy, TDE or Clariant Corporation; Described silane coupling agent is KH560, KH570 or KH792; Described lubricant is ethylene bis stearamide, oleylamide or butyl stearate.
2., as claimed in claim 1 for the thermal conducting material of LED, it is characterized in that, comprise each component of following weight percent:
3., as claimed in claim 1 for the thermal conducting material of LED, it is characterized in that, comprise each component of following weight percent:
4., as claimed in claim 1 for the thermal conducting material of LED, it is characterized in that, described oxidation inhibitor is antioxidant 1010 or irgasfos 168.
5. prepare as claimed in claim 1 for the method for the thermal conducting material of LED for one kind, it is characterized in that, comprise the steps: nylon66 fiber, aluminium nitride powder drops into high mixer, add after silane coupling agent mixes, add aluminium powder again, after fire retardant, lubricant, oxidation inhibitor mixes, under 240 ~ 260 DEG C of conditions, use twin screw extruder extruding pelletization.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102174254A (en) * | 2010-12-27 | 2011-09-07 | 东莞劲胜精密组件股份有限公司 | Highly heat-conducting insulation engineering plastic and preparation method thereof |
| CN102260413A (en) * | 2010-05-28 | 2011-11-30 | 合复新材料科技(无锡)有限公司 | Composite material component with high flame retardation performance and high heat conduction performance, and its manufacture method |
| CN102372918A (en) * | 2010-08-12 | 2012-03-14 | 湖南华曙高科技有限责任公司 | Nylon/aluminum powder composite powdery material based on selective laser sintering |
| CN102399442A (en) * | 2011-11-24 | 2012-04-04 | 上海日之升新技术发展有限公司 | Antiflaming heat-conduction PA66 (Polymide 66) composite material and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102260413A (en) * | 2010-05-28 | 2011-11-30 | 合复新材料科技(无锡)有限公司 | Composite material component with high flame retardation performance and high heat conduction performance, and its manufacture method |
| CN102372918A (en) * | 2010-08-12 | 2012-03-14 | 湖南华曙高科技有限责任公司 | Nylon/aluminum powder composite powdery material based on selective laser sintering |
| CN102174254A (en) * | 2010-12-27 | 2011-09-07 | 东莞劲胜精密组件股份有限公司 | Highly heat-conducting insulation engineering plastic and preparation method thereof |
| CN102399442A (en) * | 2011-11-24 | 2012-04-04 | 上海日之升新技术发展有限公司 | Antiflaming heat-conduction PA66 (Polymide 66) composite material and preparation method thereof |
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