CN102977599A - 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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- CN102977599A CN102977599A CN201210451828XA CN201210451828A CN102977599A CN 102977599 A CN102977599 A CN 102977599A CN 201210451828X A CN201210451828X A CN 201210451828XA CN 201210451828 A CN201210451828 A CN 201210451828A CN 102977599 A CN102977599 A CN 102977599A
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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 the insulating heat-conduction material field, be specifically related to a kind of for LED thermal conducting material and preparation method thereof.
Background technology
The development of and commercial illumination civilian along with LED replaces production efficiency and the economic worth of cast aluminium more and more obvious with plastics.LED is converted into heat energy more than 85% when opto-electronic conversion, only have sub-fraction to be converted into light, is used for illumination.LED carries out opto-electronic conversion with PN junction, and PN junction can not bear this part heat at all, needs to adopt special technique to solve the outlet of led light source heat.There are some researches show, 2 ℃ of the every risings of LED junction temperature, device reliability decline 10%, LED junction temperature reaches 120 ℃, and luminous intensity just descends about 35%, so the LED junction temperature must be controlled in 110 ℃.
Outside the associated materials that heat radiation relates to for the LED device, 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 the present main Aluminium Radiator that adopts after the anodizing in housing insulativity, flame retardant resistance, deformation resistance, erosion resistance.
At present heat conduction and the insulation effect of heat-conducting plastic are not satisfactory, and adopt the problem such as heat-resisting of Cost Problems, the employing ABS base material of the base materials such as PA46, PPS all restricting application and the popularization of heat-conducting plastic.Heat conduction ABS adopts ABS base-material and aluminium nitride powder and auxiliary agent blend, sees " insulating heat-conductive ABS matrix material of doped aluminum nitride and preparation method thereof " patent (CN102408663A).Overcome the in the market thermal conductivity of thermally conductive material and the problem that insulation effect restricts contradiction mutually, heat-conducting effect and insulation effect improve simultaneously, and cost controlled preferably, can better promote to mould the application for aluminium.
Summary of the invention
Purpose of the present invention is exactly the deficiency that exists in order to overcome above-mentioned prior art, provides a kind of for LED thermally conductive material and preparation method thereof.The present invention reaches the allotment to two components by adding aluminum nitride powder, aluminium powder composition, has improved the thermal conductivity of material, thereby will improve the electric ratio that is converted to light, has improved the utilization ratio of light.Cost of the present invention is low, and step is simple, easily operation, and energy-conserving and environment-protective have 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:
Nylon 66 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, described thermal conducting material for LED comprises each component of following weight percent:
Nylon 66 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, described thermal conducting material for LED comprises each component of following weight percent:
Nylon 66 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 company.Described OP1230 is halogen-free flame retardants, this halogen-free flame retardants is produced by German Clariant company (Clariant AG), model is ExolitOP1230, chemical structure is the phosphorus contained multicomponent alcohols, this fire retardant does not contain halogen, flame-retardant V 0-stage, more environmental protection, can be according to the performance requriements allotment nylon content of product, the LED scatterer that satisfies different capacity uses; Product rigidity and toughness have better balance, have higher cost performance and wider use range; Simultaneously very environmental protection 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 the third oxygen) propyl trimethoxy silicane, and this molecular formula is CH
2-CH (O) CH
2-O (CH
2) 3Si (OCH
3)
3Described KH570 is γ-methacryloxypropyl trimethoxy silane, being used for inorganic filler surface processes, improve the bounding force of mineral filler, ground and resin to improve its physicals, especially performances such as the physical strength of matrix material, water-repellancy, electric property, thermotolerance, and higher conservation rate is arranged under hygrometric state; Described KH792 is N-(β one aminoethyl)-γ-aminopropyl front three (second) TMOS.
Preferably, described lubricant is ethylene bis stearamide, oleylamide or butyl stearate.Lubricant can improve the plastic working flowability, improves product surface smooth finish, and luminance brightness and surperficial soft and smooth degree and goods release property are enhanced productivity.
Preferably, described oxidation inhibitor is antioxidant 1010 or irgasfos 168.Described antioxidant 1010 is four [β-(3, the 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 oxidation caused performance degradation when the effect of oxidation inhibitor can prevent materials processing.
Second aspect, the invention still further relates to a kind of method for preparing aforementioned thermal conducting material for LED, comprise the steps: nylon 66, aluminium nitride powder drops into high mixer, after the adding silane coupling agent mixes, add again after aluminium powder, fire retardant, lubricant, oxidation inhibitor mix, under 240～260 ℃ of conditions, use the twin screw extruder extruding pelletization.
Prior art is compared, and the present invention has following beneficial effect: the present invention is low-cost, thermal conductivity is high, can satisfy the heat radiation requirement of differing materials.The thermal conductivity of common plastics is generally below 0.5W/m.k, Japan KISCOM Company Material thermal conductivity reaches 3W/m.k, and can bring into play synergy in each component and the certain content scope thereof in the present composition, thermally conductive material thermal conductivity of the present invention produced beyond thought technique effect, so that can reach 10W/m.k; Simultaneously, the present invention adopts aluminium powder to fill, and has improved significantly thermal conductivity, and the plastic grain product can be used for the injection moulding of LED heat radiating cup, and heat resisting temperature significantly improves than ABS, and cost significantly reduces than materials such as PPS, and preferably application prospect is arranged.
Embodiment
The present invention is described in detail below in conjunction with specific embodiment.Following examples will help those skilled in the art further to understand the present invention, but not limit in any form the present invention.Should be pointed out that to those skilled in the art, without departing from the inventive concept of the premise, can also make some distortion and improvement.These all belong to protection scope of the present invention.
Comparative Examples 1-2
Comparative Examples 1-2 provides respectively the preparation method of thermal conducting material to comprise the steps: to get respectively each component according to the weight percent shown in each table of following Comparative Examples, with nylon 66, aluminium nitride powder drops into high mixer, after the adding silane coupling agent mixes, add again after aluminium powder, fire retardant, lubricant, oxidation inhibitor mix, under 240～260 ℃ of conditions, use the twin screw extruder extruding pelletization.
Table 1
| Comparative Examples 1 | Component | Concrete material | Content |
| 1 | Nylon 66 | The inferior 24FE2K in sieve ground | 80 |
| 2 | Aluminium nitride powder | The Tieling moral is contained 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 Examples 2 | Component | Concrete material | Content |
| 1 | Nylon 66 | The inferior 24FE2K in sieve ground | 20 |
| 2 | Aluminium nitride powder | The Tieling moral is contained 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 provides respectively the thermal conducting material that is used for LED, get respectively each component according to the weight percent content shown in each table among the embodiment, the preparation method who is used for the thermal conducting material of LED among each embodiment comprises the steps: nylon 66, aluminium nitride powder drops into high mixer, after the adding silane coupling agent mixes, add again after aluminium powder, fire retardant, lubricant, oxidation inhibitor mix, under 240～260 ℃ of conditions, use the 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 slightly yellowy fine particle, and are nontoxic, and human body is had no side effect, be insoluble to most of solvents under the normal temperature, stable to soda acid and water medium.
Table 3
| Embodiment 1 | Component | Concrete material | Content |
| 1 | Nylon 66 | The inferior 24FE2K in sieve ground | 40 |
| 2 | Aluminium nitride powder | The Tieling moral is contained 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 | Nylon 66 | The inferior 24FE2K in sieve ground | 70 |
| 2 | Aluminium nitride powder | The Tieling moral is contained Destek020MS | 10 |
| 3 | Aluminium powder | Star platinum connection 6300 | 7.6 |
| 4 | Fire retardant | The 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 | Nylon 66 | The inferior 24FE2K in sieve ground | 45 |
| 2 | Aluminium nitride powder | The Tieling moral is contained 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 | Nylon 66 | The inferior 24FE2K in sieve ground | 59 |
| 2 | Aluminium nitride powder | The Tieling moral is contained 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 | Nylon 66 | The inferior 24FE2K in sieve ground | 46 |
| 2 | Aluminium nitride powder | The Tieling moral is contained Destek020MS | 30 |
| 3 | Aluminium powder | Star platinum connection 6300 | 5 |
| 4 | Fire retardant | The 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 | Nylon 66 | The inferior 24FE2K in sieve ground | 70 |
| 2 | Aluminium nitride powder | The Tieling moral is contained 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
The result of above embodiment and Comparative Examples has been carried out the test of thermal conductivity, and 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, greatly is better than the same type of material of prior art; Adopt in the preparation simultaneously aluminium powder to fill, thermal conductivity improves greatly, is the method that present all thermally conductive materials do not have employing, and heat resisting temperature significantly improves than ABS, and cost significantly reduces than materials such as PPS.
More than specific embodiments of the invention are described.It will be appreciated that the present invention is not limited to above-mentioned particular implementation, those skilled in the art can make various distortion or modification within the scope of the claims, and this does not affect flesh and blood of the present invention.
Claims (8)
1. a thermal conducting material that is used for LED is characterized in that, comprises each component of following weight percent:
Nylon 66 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%.
2. the thermal conducting material for LED as claimed in claim 1 is characterized in that, comprises each component of following weight percent:
Nylon 66 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%.
3. the thermal conducting material for LED as claimed in claim 1 is characterized in that, comprises each component of following weight percent:
Nylon 66 46%,
Aluminium nitride powder 30%,
Aluminium powder 4%,
Phosphorus flame retardant 15%,
Silane coupling agent 4%,
Lubricant 0.5%,
Oxidation inhibitor 0.5%.
4. the thermal conducting material for LED as claimed in claim 1 is characterized in that, described fire retardant is the OP1230 of brominated epoxy, TDE or Clariant company.
5. the thermal conducting material for LED as claimed in claim 1 is characterized in that, described silane coupling agent is KH560, KH570 or KH792.
6. the thermal conducting material for LED as claimed in claim 1 is characterized in that, described lubricant is ethylene bis stearamide, oleylamide or butyl stearate.
7. the thermal conducting material for LED as claimed in claim 1 is characterized in that, described oxidation inhibitor is antioxidant 1010 or irgasfos 168.
8. method for preparing the thermal conducting material for LED as claimed in claim 1, it is characterized in that, comprise the steps: nylon 66, aluminium nitride powder drops into high mixer, after the adding silane coupling agent mixes, add again after aluminium powder, fire retardant, lubricant, oxidation inhibitor mix, under 240～260 ℃ of conditions, use the twin screw extruder extruding pelletization.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105086431A (en) * | 2015-08-18 | 2015-11-25 | 四川中物材料股份有限公司 | Thermally conductive insulating flame retardant nylon alloy used for LED (light-emitting diode) and preparation method thereof |
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| 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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Patent Citations (4)
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| 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 |
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| 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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| CN105086431A (en) * | 2015-08-18 | 2015-11-25 | 四川中物材料股份有限公司 | Thermally conductive insulating flame retardant nylon alloy used for LED (light-emitting diode) and preparation method thereof |
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