CN104832895A - Polytetrafluoroethylene-doped ferrocene radiating material for LED light source and preparation method thereof - Google Patents

Abstract

The invention relates to an LED radiating material, in particular to a polytetrafluoroethylene-doped ferrocene radiating material for an LED light source and a preparation method thereof. The material is prepared by the following raw materials in parts by weight: 0.1-0.2 of vanadium dioxide, 2-3 of zirconium oxide sol with a solid content of 10-15%, 2-3 of pseudo-boehmite powder of 400-600 meshes, 1-2 of ferrocene, 5-8 of aluminum oxide, 3-5 of sodium silicate, 1-2 of polyethylene glycol, 1-3 of gamma-aminopropyl triethoxysilane, 30-40 of water, 0.2-0.3 of N-methyl pyrrolidone, 20-25 of aluminum nitride micropowder of 400-600 meshes, 40-50 of polytetrafluoroethylene micropowder of 200-300 meshes, and 2-3 of assistants. The radiating material is efficient, uniform and stable in heat conductivity, resists the environmental corrosion and the light ageing in use, has clean surface, resists the dirt, is safe and environment-friendly, is easy to be machined and cut, and is a novel energy-saving LED lamp radiating material.

Description

Heat sink material of the base and doped ferrocene of a kind of LED light source polytetrafluoroethylene (PTFE) and preparation method thereof

Technical field

The present invention relates to LED heat sink material, be specifically related to heat sink material of the base and doped ferrocene of a kind of LED light source polytetrafluoroethylene (PTFE) and preparation method thereof and production method thereof.

Background technology

LED is the abbreviation of light emitting diode, be a kind of be the semiconductor electronic component of luminous energy by electric energy conversion, there is volume little, life-span is long, power consumption is low, reaction speed is fast, luminous efficiency is high, the advantages such as energy-conserving and environment-protective, it is the product of the most competitiveness 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 material 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 filling, good radiating effect can be played, the environmental suitability of material can be improved again, reach the serviceability of efficient stable.

Polytetrafluoroethylene (PTFE) 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 coefficient of expansion 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 serviceability.

Summary of the invention

The object of the invention is to, provide heat sink material of the base and doped ferrocene of a kind of LED light source polytetrafluoroethylene (PTFE) and preparation method thereof, to achieve these goals, the technical solution used in the present invention is as follows:

Heat sink material of the base and doped ferrocene of a kind of LED light source polytetrafluoroethylene (PTFE) and preparation method thereof, it is characterized in that, material of the present invention is made up of the raw material of following weight portion: vanadium dioxide 0.1-0.2, solid content are zirconia sol 2-3,400-600 order boehmite powder 2-3 of 10-15%, ferrocene 1-2, aluminium oxide 5-8, sodium metasilicate 3-5, polyethylene glycol 1-2, gamma-aminopropyl-triethoxy-silane 1-3, water 30-40,1-METHYLPYRROLIDONE 0.2-0.3,400-600 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 portion: polyether silicone oil 1-3, silane coupler kh550 4-5, beta-diketon 1-2, 1-phenyl-5-mercapto tetrazole 0.1-0.2, lanthanum aluminate 0.01-0.02, carbon whisker 12-15, solid content is the Nano silica sol 20-25 of 10-15%, preparation method is: first by beta-diketon, 1-phenyl-5-mercapto tetrazole, lanthanum aluminate drops in Ludox, rapid stirring makes material dispersed in colloidal sol, add carbon whisker more subsequently, be uniformly mixed rear drying at room temperature removing moisture, dried material mixes with other residual components, grinding distribution 20-30min, obtain.

Heat sink material of the described base and doped ferrocene of a kind of LED light source polytetrafluoroethylene (PTFE) and preparation method thereof, its preparation method is:

(1) first ferrocene, vanadium dioxide are dropped in zirconia sol, ultrasonic disperse 40-50min makes powder dispersed in colloidal sol, add aluminium oxide more subsequently, under 60-80 DEG C of condition, 4-5h is processed after being uniformly mixed, again itself and gamma-aminopropyl-triethoxy-silane mixed grinding are disperseed 20-30min subsequently, gained material is for subsequent use;

(2) sodium metasilicate, polyethylene glycol, 1-METHYLPYRROLIDONE 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, it is compressing 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 such as sodium metasilicate, polyethylene glycol as binding agent, effectively improve polytetrafluoroethylpowder powder surface property, improve the compatibility between raw material, ferrocene after the coated heat treatment of zirconia sol, vanadium dioxide more easily disperse in base-material, the heat conduction and heat radiation ability that improve material of stability and high efficiency, the auxiliary agent of interpolation is improved effect of dimension stability; Polytetrafluoroethylene (PTFE) 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 in use, clean surface bears dirty, safety and environmental protection, being easy to processing cut, is a kind of LED lamp heat sink material of novel energy-conserving.

Detailed description of the invention

Embodiment

The present embodiment heat sink material is made up of following raw material: vanadium dioxide 0.1, solid content are zirconia sol 3,600 order boehmite powder 3, ferrocene 2, aluminium oxide 7, sodium metasilicate 4, polyethylene glycol 2, gamma-aminopropyl-triethoxy-silane 3, water 38,1-METHYLPYRROLIDONE 0.2,600 order aluminium nitride micro mist 23,200 order ptfe micropowder 48, the auxiliary agent 3 of 12%.

Described auxiliary agent is made up of the raw material of following weight portion: polyether silicone oil 2, silane coupler kh550 5, beta-diketon 1,1-phenyl-5-mercapto tetrazole 0.1, lanthanum aluminate 0.01, carbon whisker 15, solid content is the Nano silica sol 25 of 10%, preparation method is: first drop in Ludox by beta-diketon, 1-phenyl-5-mercapto tetrazole, lanthanum aluminate, rapid stirring makes material dispersed in colloidal sol, add carbon whisker more subsequently, be uniformly mixed rear drying at room temperature removing moisture, dried material mixes with other residual components, grinding distribution 30min, to obtain final product.

Heat sink material of the described base and doped ferrocene of a kind of LED light source polytetrafluoroethylene (PTFE) and preparation method thereof, its preparation method is:

(1) first ferrocene, vanadium dioxide are dropped in zirconia sol, ultrasonic disperse 50min makes powder dispersed in colloidal sol, add aluminium oxide more subsequently, under 60-80 DEG C of condition, 5h is processed after being uniformly mixed, again itself and gamma-aminopropyl-triethoxy-silane mixed grinding are disperseed 30min subsequently, gained material is for subsequent use;

(2) sodium metasilicate, polyethylene glycol, 1-METHYLPYRROLIDONE are dropped in water, after stirring makes material dissolve dispersion completely, drop into ptfe micropowder, continue dispersed with stirring 45min, then step (1) gained material and other leftover materials are added, mixed grinding dispersion 2.5h, compressing 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 indications obtained:

Hot strength is: 50.1MPa; Elongation at break: 0.45%; Dielectric strength: 23.5KV/mm; Thermal conductivity factor is 4.3W/m.k; Thermal diffusion coefficient is 27.6mm ²/ s; The more single polytetrafluoroethylene (PTFE) of thermal linear expansion coefficient reduces 84%; Illumination aging resisting performance grade: 4.5 grades.

Claims (2)

1. the heat sink material and preparation method thereof of the base and doped ferrocene of LED light source polytetrafluoroethylene (PTFE), it is characterized in that, this material is made up of the raw material of following weight portion: vanadium dioxide 0.1-0.2, solid content are zirconia sol 2-3,400-600 order boehmite powder 2-3 of 10-15%, ferrocene 1-2, aluminium oxide 5-8, sodium metasilicate 3-5, polyethylene glycol 1-2, gamma-aminopropyl-triethoxy-silane 1-3, water 30-40,1-METHYLPYRROLIDONE 0.2-0.3,400-600 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 portion: polyether silicone oil 1-3, silane coupler kh550 4-5, beta-diketon 1-2, 1-phenyl-5-mercapto tetrazole 0.1-0.2, lanthanum aluminate 0.01-0.02, carbon whisker 12-15, solid content is the Nano silica sol 20-25 of 10-15%, preparation method is: first by beta-diketon, 1-phenyl-5-mercapto tetrazole, lanthanum aluminate drops in Ludox, rapid stirring makes material dispersed in colloidal sol, add carbon whisker more subsequently, be uniformly mixed rear drying at room temperature removing moisture, dried material mixes with other residual components, grinding distribution 20-30min, obtain.

2. the heat sink material and preparation method thereof of the base and doped ferrocene of a kind of LED light source polytetrafluoroethylene (PTFE) as claimed in claim 1, its preparation method is:

(1) first ferrocene, vanadium dioxide are dropped in zirconia sol, ultrasonic disperse 40-50min makes powder dispersed in colloidal sol, add aluminium oxide more subsequently, under 60-80 DEG C of condition, 4-5h is processed after being uniformly mixed, again itself and gamma-aminopropyl-triethoxy-silane mixed grinding are disperseed 20-30min subsequently, gained material is for subsequent use;

(2) sodium metasilicate, polyethylene glycol, 1-METHYLPYRROLIDONE 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, it is compressing 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.