CN104877280A - Polytetrafluoroethylene-based magnetic efficient heat dissipation material for LED light source and preparation method of polytetrafluoroethylene-based magnetic efficient heat dissipation material - Google Patents
Polytetrafluoroethylene-based magnetic efficient heat dissipation material for LED light source and preparation method of polytetrafluoroethylene-based magnetic efficient heat dissipation material Download PDFInfo
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- CN104877280A CN104877280A CN201510168925.1A CN201510168925A CN104877280A CN 104877280 A CN104877280 A CN 104877280A CN 201510168925 A CN201510168925 A CN 201510168925A CN 104877280 A CN104877280 A CN 104877280A
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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
- 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
- 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
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Abstract
The invention relates to LED heat dissipation materials and particularly relates to a polytetrafluoroethylene-based magnetic efficient heat dissipation material for an LED light source and a preparation method of the polytetrafluoroethylene-based magnetic efficient heat dissipation material. The polytetrafluoroethylene-based magnetic efficient heat dissipation material is prepared from the following raw materials in parts by weight: 0.1-0.2 part of polybenzimidazole, 5-8 parts of aluminum oxide, 0.1-0.2 part of 400-600-mesh neodymium iron boron micro-powder, 2-3 parts of silica sol with the solid content of 15%-20%, 12-15 parts of an organic silicon resin emulsion with the solid content of 15%-20%, 1-2 parts of a normal-temperature foamless surfactant, 2-3 parts of sodium silicate, 16-20 parts of water, 1-2 parts of calcium stearate, 20-25 parts of 400-600-mesh aluminum nitride micro-powder, 40-50 parts of 200-300-mesh polytetrafluoroethylene micro-powder and 2-3 parts of an aid. The heat dissipation material has the advantages of high efficient, uniform and stable thermal conductivity, environment corrosion resistance, stability in forming, good heat stability, clean and antifouling surface, safety, insulation and easiness in machining and cutting and is an environmental-friendly and efficient heat dissipation material for LED lamps.
Description
Technical field
The present invention relates to LED heat sink material, be specifically related to a kind of LED light source polytetrafluoroethylene (PTFE) base magnetic high efficiency and heat radiation material 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 a kind of LED light source polytetrafluoroethylene (PTFE) base magnetic high efficiency and heat radiation material and preparation method thereof, to achieve these goals, the technical solution used in the present invention is as follows:
A kind of LED light source polytetrafluoroethylene (PTFE) base magnetic high efficiency and heat radiation material 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 silicone resin emulsion 12-15 that the silicon sol 2-3 that polybenzimidazole 0.1-0.2, aluminum oxide 5-8,400-600 order neodymium iron boron micro mist 0.1-0.2, solid content are 15-20%, solid content are 15-20%, normal temperature bulb-less surface activity agent 1-2, water glass 2-3, water 16-20, calcium stearate 1-2,400-600 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.
Described a kind of LED light source polytetrafluoroethylene (PTFE) base magnetic high efficiency and heat radiation material and preparation method thereof, its preparation method is:
(1) first mixed with silicon sol by neodymium iron boron micro mist, ultrasonic disperse 20-30min, make neodymium iron boron micro mist dispersed in colloidal sol, subsequently by itself and silicone resin emulsion mix and blend 30-40min, gained material is for subsequent use;
(2) water glass, 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, tensio-active agent as binding agent, improve the surface wettability of polytetrafluoroethylpowder powder, improve the cohesive force between each raw material, magnetic neodymium iron boron micro mist through silicone resin emulsion and the coated process of silicon sol more easily disperses in the substrate, it effectively accelerates the radiant heat transfer speed that material produces LED, dispel the heat more even fast, 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, forming materials are stable, Heat stability is good, clean surface bears dirty, safe insulation, 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: the silicone resin emulsion 14 that the silicon sol 3 that polybenzimidazole 0.1, aluminum oxide 8,400 order neodymium iron boron micro mist 0.1, solid content are 20%, solid content are 20%, normal temperature bulb-less surface activity agent 2, water glass 3, water 20, calcium stearate 2,600 order aluminium nitride micro mist 23,300 order ptfe micropowder 50, auxiliary agent 3.
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.
Described a kind of LED light source polytetrafluoroethylene (PTFE) base magnetic high efficiency and heat radiation material and preparation method thereof, its preparation method is:
(1) first mixed with silicon sol by neodymium iron boron micro mist, ultrasonic disperse 30min, make neodymium iron boron micro mist dispersed in colloidal sol, subsequently by itself and silicone resin emulsion mix and blend 40min, gained material is for subsequent use;
(2) water glass, 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 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: 52.3MPa; Elongation at break: 0.43%; Dielectric strength: 16.8KV/mm; Thermal conductivity is 5.3W/m.k; Thermal diffusivity is 30.4mm
2/ s; The more single tetrafluoroethylene of thermal linear expansion coefficient reduces 83%; Illumination aging resisting performance grade: 4.5 grades.
Claims (2)
1. LED light source polytetrafluoroethylene (PTFE) base magnetic high efficiency and heat radiation material and preparation method thereof, it is characterized in that, this material is made up of the raw material of following weight part: the silicone resin emulsion 12-15 that the silicon sol 2-3 that polybenzimidazole 0.1-0.2, aluminum oxide 5-8,400-600 order neodymium iron boron micro mist 0.1-0.2, solid content are 15-20%, solid content are 15-20%, normal temperature bulb-less surface activity agent 1-2, water glass 2-3, water 16-20, calcium stearate 1-2,400-600 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. a kind of LED light source polytetrafluoroethylene (PTFE) base magnetic high efficiency and heat radiation material as claimed in claim 1 and preparation method thereof, its preparation method is:
(1) first mixed with silicon sol by neodymium iron boron micro mist, ultrasonic disperse 20-30min, make neodymium iron boron micro mist dispersed in colloidal sol, subsequently by itself and silicone resin emulsion mix and blend 30-40min, gained material is for subsequent use;
(2) water glass, 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.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510168925.1A CN104877280A (en) | 2015-04-11 | 2015-04-11 | Polytetrafluoroethylene-based magnetic efficient heat dissipation material for LED light source and preparation method of polytetrafluoroethylene-based magnetic efficient heat dissipation material |
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| CN201510168925.1A CN104877280A (en) | 2015-04-11 | 2015-04-11 | Polytetrafluoroethylene-based magnetic efficient heat dissipation material for LED light source and preparation method of polytetrafluoroethylene-based magnetic efficient heat dissipation material |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105086666A (en) * | 2015-09-30 | 2015-11-25 | 桂林健评环保节能产品开发有限公司 | Radiation cooling paint for LED radiator surfaces |
Citations (3)
| 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 |
| CN1865384A (en) * | 2006-04-21 | 2006-11-22 | 兰州理工大学 | Polytetrafluoroethylene sealing ring material and its preparation method |
| CN103725153A (en) * | 2013-11-25 | 2014-04-16 | 铜陵天河特种电磁线有限公司 | Epoxy self-bonding paint with cooling function and preparation method of epoxy self-bonding paint |
-
2015
- 2015-04-11 CN CN201510168925.1A patent/CN104877280A/en active Pending
Patent Citations (3)
| 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 |
| CN1865384A (en) * | 2006-04-21 | 2006-11-22 | 兰州理工大学 | Polytetrafluoroethylene sealing ring material and its preparation method |
| CN103725153A (en) * | 2013-11-25 | 2014-04-16 | 铜陵天河特种电磁线有限公司 | Epoxy self-bonding paint with cooling function and preparation method of epoxy self-bonding paint |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105086666A (en) * | 2015-09-30 | 2015-11-25 | 桂林健评环保节能产品开发有限公司 | Radiation cooling paint for LED radiator surfaces |
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