CN104829983A - Teflon-based calcium niobate-doped heat radiation material for LED light source and preparation method thereof - Google Patents
Teflon-based calcium niobate-doped heat radiation material for LED light source and preparation method thereof Download PDFInfo
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- CN104829983A CN104829983A CN201510160421.5A CN201510160421A CN104829983A CN 104829983 A CN104829983 A CN 104829983A CN 201510160421 A CN201510160421 A CN 201510160421A CN 104829983 A CN104829983 A CN 104829983A
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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
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/12—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C08L27/18—Homopolymers or copolymers or tetrafluoroethene
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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
- C08K2201/002—Physical properties
- C08K2201/003—Additives being defined by their diameter
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- 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
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- C08K2201/011—Nanostructured additives
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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Abstract
The invention relates to a LED heat radiation material and especially relates to a Teflon-based calcium niobate-doped heat radiation material for a LED light source and a preparation method thereof. The Teflon-based calcium niobate-doped heat radiation material is prepared from 5-8 parts by weight of alumina powder of 400-600 meshes, 2-3 parts by weight of nanometer carbon fibers, 0.2-0.3 parts by weight of calcium niobate, 5-6 parts by weight of silica sol with solid content of 20-25%, 4-5 parts by weight of active bentonite, 30-40 parts by weight of an ethanol aqueous solution with content of 5%, 1-2 parts by weight of cellulose ether, 3-5 parts by weight of sodium silicate, 20-25 parts by weight of aluminum nitride micro-powder of 400-600 meshes, 40-50 parts by weight of Teflon micro-powder of 200-300 meshes and 2-3 parts by weight of an assistant. The LED heat radiation material has the advantages of high efficiency, uniform and stable thermal conductivity, environment corrosion resistance, light aging resistance, cleanliness, stain resistance, safety, insulation and cutting easiness and is an ideal LED lamp heat radiation material.
Description
Technical field
The present invention relates to LED heat sink material, be specifically related to base and doped calcium niobate heat sink material of a kind of LED light source tetrafluoroethylene and preparation method thereof and production method thereof.
Background technology
LED is the abbreviation of photodiode, be a kind of be the semiconductor electronic component of luminous energy by electric energy conversion, there is volume little, life-span is long, current consumption is low, speed of response is fast, luminous efficiency is high, the advantages such as energy-conserving and environment-protective, it is the product of the most competitive power of the conventional light source as an alternative of generally acknowledging in the industry, also be widely used in real life, still there is many problems in current LED product, wherein heat dissipation problem is the most important thing always, common heat sink material mostly is high-thermal conductive metal, high heat conduction inorganic materials and the composite sintering of these materials form, it is large to there is excision forming difficulty in these materials, cost is higher, be subject to the shortcomings such as environmental corrosion, and with plastics and the composite heat sink material made of heat conductive filler, good radiating effect can be played, the environmental compatibility of material can be improved again, reach the use properties of efficient stable.
Tetrafluoroethylene has high temperature resistant, resistance to chemical attack, the plurality of advantages such as easy to clean, is described as the king of plastics; Aluminium nitride good heat conductivity, thermal expansivity is little, and the heat sink material being base-material mixed sintering with both can make up the defect that traditional LED dispels the heat, and has outstanding use properties.
Summary of the invention
The object of the invention is to, provide base and doped calcium niobate heat sink material of a kind of LED light source tetrafluoroethylene and preparation method thereof, to achieve these goals, the technical solution used in the present invention is as follows:
Base and doped calcium niobate heat sink material of a kind of LED light source tetrafluoroethylene and preparation method thereof, it is characterized in that, material of the present invention is made up of the raw material of following weight part: the alumina powder jointed 5-8 of 400-600 order, carbon nano fiber 2-3, calcium niobate 0.2-0.3, solid content are silicon sol 5-6, the active bentonite 4-5 of 20-25%, 5% aqueous ethanolic solution 30-40, ether of cellulose 1-2, water glass 3-5,400-600 order aluminium nitride micro mist 20-25,200-300 order ptfe micropowder 40-50, auxiliary agent 2-3.
Described auxiliary agent is made up of the raw material of following weight part: silane coupling agent kh550 6-8, potassium methyl silicate 1-2, titanium acetylacetone (25% isopropanol water solution) 1-3, nano silicon 3-4, sodium hydroxide 0.1-0.2, water 20-25, preparation method is: be first dissolved in by sodium hydroxide in appropriate water, be mixed with the solution that pH value is 10-11, add nano silicon subsequently, ultrasonic immersion 40-50min, powder after alkaline purification is washed to neutral rear dry, and add water and be mixed with colloidal sol, again other leftover materials are mixed with the silicon dioxide gel of preparation subsequently, high-speed stirring dispersion 60-80min, obtain.
Described base and doped calcium niobate heat sink material of a kind of LED light source tetrafluoroethylene and preparation method thereof, its preparation method is:
(1) first carbon nano fiber is dropped in silicon sol, ultrasonic disperse 40-50min makes carbon nano fiber dispersed in colloidal sol, add calcium niobate more subsequently, after being uniformly mixed, thermal treatment 2-3h under 100-120 DEG C of condition, by mixture grinding distribution 20-30min after thermal treatment terminates, gained powder is for subsequent use;
(2) water glass, ether of cellulose are dropped in aqueous ethanolic solution, after stirring makes material dissolve dispersion completely, drop into ptfe micropowder, continue dispersed with stirring 40-50min, then step (1) gained material and other leftover materials are added, mixed grinding dispersion 2-3h, compression moulding after material mixes completely, shaping rear base substrate blowing 15-20h under 50-60 DEG C of condition, remove moisture completely, gained base substrate fires 30-40min under 350-380 DEG C of condition, is cooled to room temperature subsequently, to obtain final product.
The invention has the advantages that: using water glass, ether of cellulose-aqueous ethanolic solution as binding agent, improve the surface wettability of polytetrafluoroethylpowder powder, more easily bond with other raw material, the material dispersiveness in base-material obtained after high-temperature heat treatment through carbon nano fiber and the calcium niobate of the coated process of silicon sol improves, improve the photo-thermal effect of material, improve the thermal conductivity of material, the auxiliary agent of interpolation helps effect that raw material is compatible, help sintering; Tetrafluoroethylene prepared by the present invention-aluminium nitride compound plastic base heat sink material has efficient, even, stable thermal conductivity, environmental corrosion resisting, light aging resisting, and cleaning bears dirty, safe insulation, and being easy to processing and cutting, is a kind of desirable LED lamp heat sink material.
Embodiment
Embodiment
The present embodiment heat sink material is made up of following raw material: 400 orders are alumina powder jointed 8, carbon nano fiber 3, calcium niobate 0.2, solid content are 25% silicon sol 6, active bentonite 5,5% aqueous ethanolic solution 40, ether of cellulose 2, water glass 5,600 order aluminium nitride micro mist 24,300 order ptfe micropowder 50, auxiliary agent 3.
Described auxiliary agent is made up of the raw material of following weight part: silane coupling agent kh550 8, potassium methyl silicate 1, titanium acetylacetone (25% isopropanol water solution) 2, nano silicon 4, sodium hydroxide 0.2, water 25, preparation method is: be first dissolved in by sodium hydroxide in appropriate water, be mixed with the solution that pH value is 10.5, add nano silicon subsequently, ultrasonic immersion 50min, powder after alkaline purification is washed to neutral rear dry, and add water and be mixed with colloidal sol, again other leftover materials are mixed with the silicon dioxide gel of preparation subsequently, high-speed stirring dispersion 65min, obtain.
Described base and doped calcium niobate heat sink material of a kind of LED light source tetrafluoroethylene and preparation method thereof, its preparation method is:
(1) first carbon nano fiber is dropped in silicon sol, ultrasonic disperse 50min makes carbon nano fiber dispersed in colloidal sol, add calcium niobate more subsequently, after being uniformly mixed, thermal treatment 2.5h under 100-120 DEG C of condition, by mixture grinding distribution 30min after thermal treatment terminates, gained powder is for subsequent use;
(2) water glass, ether of cellulose are dropped in aqueous ethanolic solution, after stirring makes material dissolve dispersion completely, drop into ptfe micropowder, continue dispersed with stirring 50min, then step (1) gained material and other leftover materials are added, mixed grinding dispersion 2.5h, compression moulding after material mixes completely, shaping rear base substrate blowing 16h under 50-60 DEG C of condition, remove moisture completely, gained base substrate fires 40min under 350-380 DEG C of condition, is cooled to room temperature subsequently, to obtain final product.
It is as follows that material obtained by the present embodiment tests according to relevant criterion the performance index obtained:
Tensile strength is: 48.6MPa; Elongation at break: 0.38%; Dielectric strength: 15.8KV/mm; Thermal conductivity is 3.8W/m.k; Thermal diffusivity is 20.2mm
2/ s; The more single tetrafluoroethylene of thermal linear expansion coefficient reduces 88%; Illumination aging resisting performance grade: 4.5 grades.
Claims (2)
1. base and doped calcium niobate heat sink material of LED light source tetrafluoroethylene and preparation method thereof, it is characterized in that, this material is made up of the raw material of following weight part: the alumina powder jointed 5-8 of 400-600 order, carbon nano fiber 2-3, calcium niobate 0.2-0.3, solid content are silicon sol 5-6, the active bentonite 4-5 of 20-25%, 5% aqueous ethanolic solution 30-40, ether of cellulose 1-2, water glass 3-5,400-600 order aluminium nitride micro mist 20-25,200-300 order ptfe micropowder 40-50, auxiliary agent 2-3;
Described auxiliary agent is made up of the raw material of following weight part: silane coupling agent kh550 6-8, potassium methyl silicate 1-2, titanium acetylacetone (25% isopropanol water solution) 1-3, nano silicon 3-4, sodium hydroxide 0.1-0.2, water 20-25, preparation method is: be first dissolved in by sodium hydroxide in appropriate water, be mixed with the solution that pH value is 10-11, add nano silicon subsequently, ultrasonic immersion 40-50min, powder after alkaline purification is washed to neutral rear dry, and add water and be mixed with colloidal sol, again other leftover materials are mixed with the silicon dioxide gel of preparation subsequently, high-speed stirring dispersion 60-80min, obtain.
2. base and doped calcium niobate heat sink material of a kind of LED light source tetrafluoroethylene as claimed in claim 1 and preparation method thereof, its preparation method is:
(1) first carbon nano fiber is dropped in silicon sol, ultrasonic disperse 40-50min makes carbon nano fiber dispersed in colloidal sol, add calcium niobate more subsequently, after being uniformly mixed, thermal treatment 2-3h under 100-120 DEG C of condition, by mixture grinding distribution 20-30min after thermal treatment terminates, gained powder is for subsequent use;
(2) water glass, ether of cellulose are dropped in aqueous ethanolic solution, after stirring makes material dissolve dispersion completely, drop into ptfe micropowder, continue dispersed with stirring 40-50min, then step (1) gained material and other leftover materials are added, mixed grinding dispersion 2-3h, compression moulding after material mixes completely, shaping rear base substrate blowing 15-20h under 50-60 DEG C of condition, remove moisture completely, gained base substrate fires 30-40min under 350-380 DEG C of condition, is cooled to room temperature subsequently, to obtain final product.
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| CN201510160421.5A CN104829983A (en) | 2015-04-07 | 2015-04-07 | Teflon-based calcium niobate-doped heat radiation material for LED light source and preparation method thereof |
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| CN201510160421.5A CN104829983A (en) | 2015-04-07 | 2015-04-07 | Teflon-based calcium niobate-doped heat radiation material for LED light source and preparation method thereof |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102822279A (en) * | 2010-04-07 | 2012-12-12 | 电气化学工业株式会社 | Heat dissipating resin composition for led lighting housing and heat dissipating housing for led lighting |
| CN103214910A (en) * | 2013-04-03 | 2013-07-24 | 上海三思电子工程有限公司 | Radiation heat dissipation coating for reducing light-emitting diode (LED) chip junction temperature and preparation method thereof |
| CN103547644A (en) * | 2011-06-17 | 2014-01-29 | 日本瑞翁株式会社 | Thermally conductive pressure-sensitive adhesive sheet-like molded body, method for producing same, and electronic device |
| CN103555087A (en) * | 2013-09-25 | 2014-02-05 | 天长市天泰光电科技有限公司 | Fluororesin heat radiation paint for LED lamp and preparation method thereof |
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2015
- 2015-04-07 CN CN201510160421.5A patent/CN104829983A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102822279A (en) * | 2010-04-07 | 2012-12-12 | 电气化学工业株式会社 | Heat dissipating resin composition for led lighting housing and heat dissipating housing for led lighting |
| CN103547644A (en) * | 2011-06-17 | 2014-01-29 | 日本瑞翁株式会社 | Thermally conductive pressure-sensitive adhesive sheet-like molded body, method for producing same, and electronic device |
| CN103214910A (en) * | 2013-04-03 | 2013-07-24 | 上海三思电子工程有限公司 | Radiation heat dissipation coating for reducing light-emitting diode (LED) chip junction temperature and preparation method thereof |
| CN103555087A (en) * | 2013-09-25 | 2014-02-05 | 天长市天泰光电科技有限公司 | Fluororesin heat radiation paint for LED lamp and preparation method thereof |
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Inventor after: Zhang Yingcai Inventor before: Zhang Yingcai Inventor before: Liu Deshi |
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Effective date of registration: 20170310 Address after: 239400 Anhui Province Jian Xi Zhen Zhu Gang Cun, Mingguang City Applicant after: Mingguang Taiyuan Security Technology Co. Ltd. Address before: 239000, Chuzhou Province, East Garden Road, No. 555, Konka industrial transfer park, building No. 8, No. Applicant before: Anhui Bo Chang electronics technology limited-liability company |
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