CN103571201B - Heat-conducting silica gel sheet for solar inverter and preparation method thereof - Google Patents
Heat-conducting silica gel sheet for solar inverter and preparation method thereof Download PDFInfo
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- CN103571201B CN103571201B CN201210254261.7A CN201210254261A CN103571201B CN 103571201 B CN103571201 B CN 103571201B CN 201210254261 A CN201210254261 A CN 201210254261A CN 103571201 B CN103571201 B CN 103571201B
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Abstract
The invention discloses a kind of heat-conducting silica gel sheet for solar inverter and preparation method thereof, the described heat-conducting silica gel sheet for solar inverter, it is composited by following component by weight: methyl vinyl phenyl silicone rubber 30-40 part, heat filling 50-80 part, dimethicone 2-6 part and coupling agent, the consumption of described coupling agent is the 0.5-2% of heat filling weight.Described heat filling is the mixture that aluminium sesquioxide, aluminium nitride and four nitrogenize Tritanium/Trititanium.Further, described heat filling is made up of by weight following component: aluminium sesquioxide 10-20 part, aluminium nitride 40-50 part and four nitrogenize Tritanium/Trititanium 10-20 part.The heat-conducting silica gel sheet for solar inverter of the present invention, effectively contacts with heat generating component and radiating subassembly, reduces the thermal contact resistance between heat generating component and radiating subassembly, has higher heat conductivity.
Description
Technical field
The present invention relates to a kind of silica gel piece and preparation method thereof, particularly relate to a kind of heat-conducting silica gel sheet for solar inverter and preparation method thereof.
Background technology
Solar energy alternating current power-generating system is to be collectively constituted by solar panel, charge controller, inverter and accumulator；Solar DC electricity generation system does not then include inversion.Inverter is a kind of power supply change-over device, and inverter can be divided into auto-excitation type vibration inversion and separated exciting vibration inversion by energisation mode.Major function is that the DC inverter of accumulator is become alternating current.By full-bridge circuit, being generally adopted SPWM processor through ovennodulation, filtering, boosting etc., the sinusoidal ac obtaining matching with lighting load frequency, rated voltage etc. is for system terminal user.There is inverter, so that it may use direct-flow storage battery to provide alternating current for electrical equipment.
Heat-conducting silica gel sheet is with silica gel for base material, add the various auxiliary materials such as metal-oxide, by a kind of heat-conducting medium material that special process synthesizes, in industry, it is also called thermal conductive silicon rubber cushion, heat conduction silica gel sheet, soft heat conductive pad etc., it is produce exclusively for the design utilizing gap transmission heat, can blind, complete the heat transmission of heating position and radiating part interdigit, also act as insulation simultaneously, damping, the effects such as sealing, disclosure satisfy that the designing requirement of device miniaturization and ultrathin, it is great manufacturability and usability, and thickness is applied widely, it it is a kind of splendid conductive filler material.
Summary of the invention
For above shortcomings in prior art, one of the technical problem to be solved is to provide a kind of heat-conducting silica gel sheet for solar inverter.
The preparation method that the two of the technical problem to be solved are to provide a kind of heat-conducting silica gel sheet for solar inverter.
The technical problem to be solved, is achieved by the following technical solution:
A kind of heat-conducting silica gel sheet for solar inverter, it is composited by following component by weight: methyl vinyl phenyl silicone rubber 30-40 part, heat filling 50-80 part, dimethicone 2-6 part and coupling agent, the consumption of described coupling agent is the 0.5-2% of heat filling weight.
Described heat filling is the mixture that aluminium sesquioxide, aluminium nitride and four nitrogenize Tritanium/Trititanium.Further, described heat filling is made up of by weight following component: aluminium sesquioxide 10-20 part, aluminium nitride 40-50 part and four nitrogenize Tritanium/Trititanium 10-20 part.
Described coupling agent is the one in 3-TSL 8330, vinyltrimethoxy silane, isopropyl three (dodecyl benzenesulfonyl) titanate esters, sec.-propyl three (dioctyl phosphoric acid acyloxy) titanic acid ester and tetra isopropyl two (dioctyl phosphito acyloxy) titanate esters, distearyl acyl-oxygen aluminum isopropoxide acid esters coupling agent or its mixture.
Heat-conducting silica gel sheet for solar inverter of the present invention, it is possible to adopt following method to be prepared from:
(1) with coupling agent, heat filling being carried out surface modification treatment: by heat filling under high velocity agitation, rotating speed is 1500-3000r/min, sprays into coupling agent, then proceedes to stirring 5-15 minute, obtains modified heat filling；
(2) by methyl vinyl phenyl silicone rubber, modified heat filling and dimethicone at stirrer for mixing l-3 hour, put in vulcanizing press tabletting and solidify.
The effect for the heat-conducting silica gel sheet of solar inverter of the present invention is in that: insulation, heat conduction, wear-resisting, fire-retardant, filling gap, incompressible, buffering etc..Concrete:
1) reduce the thermal contact resistance produced between heat source surface and radiating element contact surface, the gap of contact surface can well be filled for the heat-conducting silica gel sheet of solar inverter,
2) due to the non-conductor that air is heat, can seriously hinder heat transmission between contact surface, and between pyrotoxin and radiator, install the heat-conducting silica gel sheet for solar inverter additional air can be extruded contact surface,
3) there is supplementing of the heat-conducting silica gel sheet for solar inverter, it is possible to make the contact surface between pyrotoxin and radiator better be fully contacted, be truly realized aspectant contact. the reaction in temperature can reach the as far as possible little temperature difference,
4) scope for the heat conductivity of the heat-conducting silica gel sheet of solar inverter is big and degree of stability good,
5) making up for the heat-conducting silica gel sheet of solar inverter structurally technique work difference, reduces the technique work difference requirement of radiator and radiator structure part,
6) there is the performance of insulation for the heat-conducting silica gel sheet of solar inverter,
7) effect of damping sound-absorbing is had for the heat-conducting silica gel sheet of solar inverter,
8) for the heat-conducting silica gel sheet of solar inverter, there is installation, test, reusable convenience.
The heat-conducting silica gel sheet for solar inverter of the present invention, effectively contacts with heat generating component and radiating subassembly, reduces the thermal contact resistance between heat generating component and radiating subassembly, has higher heat conductivity.
Detailed description of the invention
Below by specific embodiment, the invention will be further described, but the present invention is not limited by following example.
Embodiment 1
(1) weigh aluminium sesquioxide 15 kilograms, aluminium nitride 45 kilograms and four nitrogenizes Tritanium/Trititanium 15 kilograms, is uniformly mixed, and prepares mixing heat filling.
(2) with coupling agent, heat filling is carried out surface modification treatment: take above-mentioned 65 kilograms of mixing heat fillings under high velocity agitation, rotating speed is 2000r/min, spray into 0.65 kilogram of coupling agent 3-TSL 8330, then proceed to stirring 10 minutes, obtain modified heat filling；
(2) by 35 kilograms of methyl vinyl phenyl silicone rubber, above-mentioned whole modified heat filling and 4 kilograms of dimethicones stirrer for mixing 2 hours, put in vulcanizing press tabletting and solidify.
Comparative example 1
(1) with coupling agent, heat filling is carried out surface modification treatment: 65 kilograms of aluminium sesquioxide are under high velocity agitation, rotating speed is 2000r/min, spray into 0.65 kilogram of coupling agent 3-TSL 8330, then proceed to stirring 10 minutes, obtain modified heat filling；
(2) by 35 kilograms of methyl vinyl phenyl silicone rubber, above-mentioned whole modified heat filling and 4 kilograms of dimethicones stirrer for mixing 2 hours, put in vulcanizing press tabletting and solidify.
Comparative example 2
(1) with coupling agent, heat filling is carried out surface modification treatment: under high velocity agitation, rotating speed is 2000r/min to 65 kilograms of aluminium nitride, spray into 0.65 kilogram of coupling agent 3-TSL 8330, then proceed to stirring 10 minutes, obtain modified heat filling；
(2) by 35 kilograms of methyl vinyl phenyl silicone rubber, above-mentioned whole modified heat filling and 4 kilograms of dimethicones stirrer for mixing 2 hours, put in vulcanizing press tabletting and solidify.
Comparative example 3
(1) with coupling agent, heat filling is carried out surface modification treatment: 65 kilogram four nitrogenizes Tritanium/Trititanium under high velocity agitation, rotating speed is 2000r/min, spray into 0.65 kilogram of coupling agent 3-TSL 8330, then proceed to stirring 10 minutes, obtain modified heat filling；
(2) by 35 kilograms of methyl vinyl phenyl silicone rubber, above-mentioned whole modified heat filling and 4 kilograms of dimethicones stirrer for mixing 2 hours, put in vulcanizing press tabletting and solidify.
Test case:
| Embodiment 1 | Comparative example 1 | Comparative example 2 | Comparative example 3 | |
| Heat conductivity, W/m.k | 1.68 | 1.24 | 1.28 | 1.22 |
| Thickness, mm | 3 | 3 | 3 | 3 |
Heat conductivity adopts ASTMD5470 standard to test.The present invention adopts aluminium sesquioxide, aluminium nitride and four to nitrogenize three kinds of composite uses of heat filling of Tritanium/Trititanium as can be seen from the above table, and its heat conductivity is substantially better than only with single heat filling.
The above; it is only the specific embodiment of the present invention; but protection scope of the present invention is not limited thereto; any those of ordinary skill in the art are in the technical scope that disclosed herein; the change can expected without creative work or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with claims protection defined.
Claims (3)
1. the heat-conducting silica gel sheet for solar inverter, it is characterized in that being composited by following component by weight: methyl vinyl phenyl silicone rubber 30-40 part, heat filling 50-80 part, dimethicone 2-6 part and coupling agent, the consumption of described coupling agent is the 0.5-2% of heat filling weight；
Described heat filling is made up of by weight following component: aluminium sesquioxide 10-20 part, aluminium nitride 40-50 part and four nitrogenize Tritanium/Trititanium 10-20 part.
2. the heat-conducting silica gel sheet for solar inverter as claimed in claim 1, it is characterised in that: described coupling agent is the one in 3-TSL 8330, vinyltrimethoxy silane, isopropyl three (dodecyl benzenesulfonyl) titanate esters, sec.-propyl three (dioctyl phosphoric acid acyloxy) titanic acid ester and tetra isopropyl two (dioctyl phosphito acyloxy) titanate esters, distearyl acyl-oxygen aluminum isopropoxide acid esters coupling agent or its mixture.
3. for the preparation method of the heat-conducting silica gel sheet of solar inverter as according to any one of claim 1-2, it is characterised in that adopt following method to be prepared from:
(1) with coupling agent, heat filling being carried out surface modification treatment: by heat filling under high velocity agitation, rotating speed is 1500-3000r/min, sprays into coupling agent, then proceedes to stirring 5-15 minute, obtains modified heat filling；
(2) by methyl vinyl phenyl silicone rubber, modified heat filling and dimethicone at stirrer for mixing l-3 hour, put in vulcanizing press tabletting and solidify.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210254261.7A CN103571201B (en) | 2012-07-22 | 2012-07-22 | Heat-conducting silica gel sheet for solar inverter and preparation method thereof |
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| CN201210254261.7A CN103571201B (en) | 2012-07-22 | 2012-07-22 | Heat-conducting silica gel sheet for solar inverter and preparation method thereof |
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| CN103571201A CN103571201A (en) | 2014-02-12 |
| CN103571201B true CN103571201B (en) | 2016-07-06 |
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| CN104403330B (en) * | 2014-11-24 | 2017-01-18 | 深圳德邦界面材料有限公司 | Low oil leakage type radiating silica gel pad and preparation method thereof |
| CN105368376A (en) * | 2015-12-22 | 2016-03-02 | 常熟市锐思电子设备有限公司 | Switching power supply for electrical equipment |
| CN107083169B (en) * | 2017-05-31 | 2020-03-17 | 青岛海信电器股份有限公司 | Coating, preparation method thereof, two-component coating containing coating and component |
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