CN104829996A - Teflon-based modified glass fiber doped heat dissipation material for LED light source and preparation method thereof - Google Patents
Teflon-based modified glass fiber doped heat dissipation material for LED light source and preparation method thereof Download PDFInfo
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- CN104829996A CN104829996A CN201510168867.2A CN201510168867A CN104829996A CN 104829996 A CN104829996 A CN 104829996A CN 201510168867 A CN201510168867 A CN 201510168867A CN 104829996 A CN104829996 A CN 104829996A
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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
- C08K2201/011—Nanostructured additives
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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
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Abstract
The invention relates to LED heat dissipation material, and more specifically a teflon-based modified glass fiber doped heat dissipation material for an LED light source and a preparation method thereof. The material consists of the following raw materials by weight: 2-3 parts of sodium silicate, 5-8 parts of glass fiber, 2-4 parts of bentonite, 3-5 parts of nano-silica hydrosol with solid content of 20-25%, 1-2 parts of a silane coupling agent, 1-2 parts of glucose, 6-8 parts of silicon rubber powder, 1-2 parts of a room temperature foaming-free surfactant, 30-40 parts of water, 20-25 parts of aluminum nitride micropowder of 400-600 mesh, 40-50 parts of teflon powder of 200-300 mesh and 2-3 parts of an additive. The heat dissipation material provided by the invention has the advantages of efficient, uniform, and stable thermal conductivity, resistance to environmental corrosion, resistance to light-heat aging, clean surface, soiling resistance, good dimension stability, light weight, insulation and easiness to processing cutting, and is an environment-friendly efficient heat dissipation material for LED light fixture.
Description
Technical field
The present invention relates to LED heat sink material, be specifically related to heat sink material of a kind of LED light source polytetrafluoroethylene (PTFE) base doping vario-property glass fibre 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 heat sink material of a kind of LED light source polytetrafluoroethylene (PTFE) base doping vario-property glass fibre and preparation method thereof, to achieve these goals, the technical solution used in the present invention is as follows:
Heat sink material of a kind of LED light source polytetrafluoroethylene (PTFE) base doping vario-property glass fibre 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: water glass 2-3, glass fibre 5-8, wilkinite 2-4, solid content are nano silica hydrosol 3-5, the silane coupling agent 1-2 of 20-25%, glucose 1-2, silicon rubber powder 6-8, normal temperature bulb-less surface activity agent 1-2, water 30-40,400-600 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: sodium polyacrylate 1-3, aluminium secondary butylate 0.1-0.2, aluminate coupling agent 6-8, nano aluminium oxide 3-5,0.05% phosphoric acid solution 4-5, Sodium dodecylbenzene sulfonate 1-2, water 25-30, preparation method is: first drop in phosphoric acid solution by nano aluminium oxide, ultrasonic immersion 20-30min, powder after acid treatment is washed to neutral rear dry, and be hybridly prepared into alumina sol with water, finally again other leftover materials are mixed with colloidal sol, high-speed stirring dispersion 50-60min, obtains auxiliary agent.
Heat sink material of described a kind of LED light source polytetrafluoroethylene (PTFE) base doping vario-property glass fibre and preparation method thereof, its preparation method is:
(1) first glass fibre is mixed with nano silica hydrosol, ultrasonic disperse 40-50min makes fiber dispersed in colloidal sol, subsequently by mixture thermal treatment 1-2h under 100-120 DEG C of condition, gained material and silane coupling agent mixed grinding disperse 20-30min, and gained material is for subsequent use;
(2) water glass, glucose, normal temperature bulb-less surface activity agent are dropped in water, 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 the mixed aqueous solution of water glass, glucose and tensio-active agent as binding agent, improve polytetrafluoroethylpowder powder wettability of the surface, improve the viscosifying power between raw material, glass fibre after the coated and thermal treatment of nano silicon dioxide sol more easily disperses in base-material, effectively raise the capacity of heat transmission of material, reduce the thermal expansivity of plastics, and safer environmental protection, effect that the auxiliary agent of interpolation has short raw material compatible; Tetrafluoroethylene prepared by the present invention-aluminium nitride compound plastic base heat sink material has efficient, even, stable thermal conductivity, environmental corrosion resisting, resistance to light-heat aging, clean surface bears dirty, and lightweight insulate, being easy to processing cut, is a kind of LED lamp heat sink material of environment-friendly high-efficiency.
Embodiment
Embodiment
The present embodiment heat sink material is made up of following raw material: water glass 3, glass fibre 8, wilkinite 3, solid content are nano silica hydrosol 5, silane coupling agent 2, glucose 2, silicon rubber powder 6, normal temperature bulb-less surface activity agent 2, water 40,600 order aluminium nitride micro mist 24,300 order ptfe micropowder 48, the auxiliary agent 3 of 25%.
Described auxiliary agent is made up of the raw material of following weight part: sodium polyacrylate 2, aluminium secondary butylate 0.1, aluminate coupling agent 7, nano aluminium oxide 4,0.05% phosphoric acid solution 5, Sodium dodecylbenzene sulfonate 1.6, water 28, preparation method is: first drop in phosphoric acid solution by nano aluminium oxide, ultrasonic immersion 30min, powder after acid treatment is washed to neutral rear dry, and be hybridly prepared into alumina sol with water, finally again other leftover materials are mixed with colloidal sol, high-speed stirring dispersion 55min, obtains auxiliary agent.
Heat sink material of described a kind of LED light source polytetrafluoroethylene (PTFE) base doping vario-property glass fibre and preparation method thereof, its preparation method is:
(1) first glass fibre is mixed with nano silica hydrosol, ultrasonic disperse 50min makes fiber dispersed in colloidal sol, subsequently by mixture thermal treatment 2h under 100-120 DEG C of condition, gained material and silane coupling agent mixed grinding disperse 30min, and gained material is for subsequent use;
(2) water glass, glucose, normal temperature bulb-less surface activity agent are dropped in water, 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 18h under 50-60 DEG C of condition, remove moisture completely, gained base substrate fires 35min 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: 50.5MPa; Elongation at break: 0.41%; Dielectric strength: 18.6KV/mm; Thermal conductivity is 4.4W/m.k; Thermal diffusivity is 22.3mm
2/ s; The more single tetrafluoroethylene of thermal linear expansion coefficient reduces 84%; Illumination aging resisting performance grade: 4 grades.
Claims (2)
1. LED light source heat sink material of polytetrafluoroethylene (PTFE) base doping vario-property glass fibre and preparation method thereof, it is characterized in that, this material is made up of the raw material of following weight part: water glass 2-3, glass fibre 5-8, wilkinite 2-4, solid content are nano silica hydrosol 3-5, the silane coupling agent 1-2 of 20-25%, glucose 1-2, silicon rubber powder 6-8, normal temperature bulb-less surface activity agent 1-2, water 30-40,400-600 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: sodium polyacrylate 1-3, aluminium secondary butylate 0.1-0.2, aluminate coupling agent 6-8, nano aluminium oxide 3-5,0.05% phosphoric acid solution 4-5, Sodium dodecylbenzene sulfonate 1-2, water 25-30, preparation method is: first drop in phosphoric acid solution by nano aluminium oxide, ultrasonic immersion 20-30min, powder after acid treatment is washed to neutral rear dry, and be hybridly prepared into alumina sol with water, finally again other leftover materials are mixed with colloidal sol, high-speed stirring dispersion 50-60min, obtains auxiliary agent.
2. the heat sink material and preparation method thereof of a kind of LED light source polytetrafluoroethylene (PTFE) base doping vario-property glass fibre as claimed in claim 1, its preparation method is:
(1) first glass fibre is mixed with nano silica hydrosol, ultrasonic disperse 40-50min makes fiber dispersed in colloidal sol, subsequently by mixture thermal treatment 1-2h under 100-120 DEG C of condition, gained material and silane coupling agent mixed grinding disperse 20-30min, and gained material is for subsequent use;
(2) water glass, glucose, normal temperature bulb-less surface activity agent are dropped in water, 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510168867.2A CN104829996A (en) | 2015-04-11 | 2015-04-11 | Teflon-based modified glass fiber doped heat dissipation material for LED light source and preparation method thereof |
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| CN201510168867.2A CN104829996A (en) | 2015-04-11 | 2015-04-11 | Teflon-based modified glass fiber doped heat dissipation material for LED light source and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105957951A (en) * | 2016-07-26 | 2016-09-21 | 黄宇 | Novel heat sink material for semiconductors |
| CN106129239A (en) * | 2016-07-26 | 2016-11-16 | 黄宇 | A kind of novel high-performance heat sink material |
| CN106129238A (en) * | 2016-07-26 | 2016-11-16 | 黄宇 | A kind of high-performance heat sink material |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005042107A (en) * | 2003-07-09 | 2005-02-17 | Toray Ind Inc | Resin composition, tablet, molded product, and chassis or enclosure |
| CN103319824A (en) * | 2013-05-28 | 2013-09-25 | 山东瑞特新材料有限公司 | Method for preparing modified and enhanced polytetrafluoroethylene composite material |
| CN103571111A (en) * | 2012-07-22 | 2014-02-12 | 上海利隆化工化纤有限公司 | Polytetrafluoroethylene sealing gasket and preparation method thereof |
| CN104250414A (en) * | 2013-06-28 | 2014-12-31 | 曹建林 | Manufacturing method of wear-resistant Teflon membrane material |
-
2015
- 2015-04-11 CN CN201510168867.2A patent/CN104829996A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005042107A (en) * | 2003-07-09 | 2005-02-17 | Toray Ind Inc | Resin composition, tablet, molded product, and chassis or enclosure |
| CN103571111A (en) * | 2012-07-22 | 2014-02-12 | 上海利隆化工化纤有限公司 | Polytetrafluoroethylene sealing gasket and preparation method thereof |
| CN103319824A (en) * | 2013-05-28 | 2013-09-25 | 山东瑞特新材料有限公司 | Method for preparing modified and enhanced polytetrafluoroethylene composite material |
| CN104250414A (en) * | 2013-06-28 | 2014-12-31 | 曹建林 | Manufacturing method of wear-resistant Teflon membrane material |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105957951A (en) * | 2016-07-26 | 2016-09-21 | 黄宇 | Novel heat sink material for semiconductors |
| CN106129239A (en) * | 2016-07-26 | 2016-11-16 | 黄宇 | A kind of novel high-performance heat sink material |
| CN106129238A (en) * | 2016-07-26 | 2016-11-16 | 黄宇 | A kind of high-performance heat sink material |
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Application publication date: 20150812 |