CN103568402A - Heat-conductive silica gel sheet with glass fiber and preparation method thereof - Google Patents
Heat-conductive silica gel sheet with glass fiber and preparation method thereof Download PDFInfo
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- CN103568402A CN103568402A CN201210255833.3A CN201210255833A CN103568402A CN 103568402 A CN103568402 A CN 103568402A CN 201210255833 A CN201210255833 A CN 201210255833A CN 103568402 A CN103568402 A CN 103568402A
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Abstract
The invention discloses a heat-conductive silica gel sheet with glass fiber and a preparation method thereof. The heat-conductive silica gel sheet with glass fiber comprises glass fiber cloth, the two faces of the glass fiber cloth are coated with heat-conductive silica gel, wherein the heat-conductive silica gel is prepared by compounding the following components in parts by weight: 30-40 parts of methyl vinyl silicone rubber, 50-80 parts of a heat-conductive filling material, 2-6 parts of promoter TMTD and a coupling agent accounting for 0.5-2% by weight of the heat-conductive filling material, and the heat-conductive filling material is a mixture of silicon carbide, aluminium powder and boron nitride. The heat-conductive silica gel sheet with glass fiber is capable of reducing the contacting thermal resistance between a heating assembly and a heat-dissipating assembly by effectively contacting the heating assembly and the heat-dissipating assembly, and has relatively high heat conductivity coefficient.
Description
Technical field
The present invention relates to a kind of silica gel piece and preparation method thereof, relate in particular to a kind of band glass heat-conducting silica gel sheet and preparation method thereof.
Background technology
Heat-conducting silica gel sheet is to take silica gel as base material, add the various auxiliary materials such as metal oxide, a kind of heat-conducting medium material synthesizing by special process, in industry, be called again thermal conductive silicon rubber cushion, heat conduction silica gel sheet, soft heat conductive pad etc., special in utilizing the design of gap transferring heat to produce, can blind, complete the heat transmission of heating position and radiating part interdigit, also play insulation simultaneously, damping, the effects such as sealing, can meet the designing requirement of device miniaturization and ultrathin, to have manufacturability and usability, and thickness is applied widely, it is a kind of splendid heat conduction packing material.
Summary of the invention
For above shortcomings in prior art, one of technical problem to be solved by this invention is to provide a kind of band glass heat-conducting silica gel sheet.
Two of technical problem to be solved by this invention is to provide a kind of preparation method with glass heat-conducting silica gel sheet.
Technical problem to be solved by this invention, is achieved by the following technical solution:
A kind of band glass heat-conducting silica gel sheet, comprise glass fabric, the coated on both sides of described glass fabric has heat conductive silica gel, described heat conductive silica gel is composited by following component by weight: methyl vinyl silicone rubber 30-40 part, heat filling 50-80 part, Vulcanization accelerator TMTD 2-6 part and coupling agent, the consumption of described coupling agent is the 0.5-2% of heat filling weight, and described heat filling is the mixture of carborundum, aluminium powder and boron nitride.
Further, described heat filling consists of by weight following component: carborundum 10-20 part, aluminium powder 40-50 part and boron nitride 10-20 part.
Described Vulcanization accelerator TMTD, chemical name is curing two (thiocarbonyl group dimethylamine), No. CAS: 137-26-8.
This coupling agent is that titanium is that coupling agent and aluminium are at least one in coupling agent, this titanium is that coupling agent comprises isopropyl triisostearoyltitanate, isopropyl tri(dioctylpyrophosphato)titanate, (N-aminoethyl one aminoethyl isopropyl titanate, two (two 13 ester groups of phosphoric acid) metatitanic acid four monooctyl esters, two (two 13 ester groups of phosphoric acid) metatitanic acid four (2, 2--allyloxy methyl isophthalic acid-butyl) ester, two (dioctyl pyrophosphoryl oxygen base) oxo acetic acid titanium, two (dioctyl pyrophosphoryl oxygen base) metatitanic acid vinyl acetate, three caprylyl isopropyl titanates, different diisobutylene acyl group iso stearate base isopropyl titanate, three (dodecyl benzoyloxy group) isopropyl titanate, the different hard ester group isopropyl titanate of two acryloxies, isopropyl tri(dioctylphosphato)titanate, three cumic aldehyde methyl isopropyl titanates, with at least one in two (dioctyl pyrophosphoryl oxygen base) tetraisopropyl titanate, this aluminium is that coupling agent is isopropyl distearyl acyl-oxygen base Aluminate.
Band glass heat-conducting silica gel sheet of the present invention, can adopt following method to be prepared from:
(1) with coupling agent, heat filling is carried out to surface modification treatment: under high-speed stirred, rotating speed is 1500-3000r/min, sprays into coupling agent by heat filling, then continue to stir 5-15 minute, obtain modification heat filling;
(2) by methyl vinyl silicone rubber, modification heat filling and Vulcanization accelerator TMTD at stirrer for mixing 1-3 hour, make heat conductive silica gel;
(3) two sides of glass fabric is all coated with and is covered with heat conductive silica gel, can make band glass heat-conducting silica gel sheet of the present invention.
The thickness of the heat conductive silica gel that described glass fabric applies is 1-3mm.
Effect with glass heat-conducting silica gel sheet of the present invention is: insulation, heat conduction, wear-resisting, fire-retardant, fill gap, incompressible, buffering etc.Concrete:
1) reduce the thermal contact resistance producing between thermal source surface and radiating element contact-making surface, with glass heat-conducting silica gel sheet, can well fill the gap of contact-making surface,
2) because air is hot non-conductor, can seriously hinder the transmission of heat between contact-making surface, and install band glass heat-conducting silica gel sheet additional between pyrotoxin and radiator, air can be extruded to contact-making surface,
3) having had with the supplementing of glass heat-conducting silica gel sheet, can make the better fully contact of contact-making surface between pyrotoxin and radiator, really accomplished aspectant contact. the reaction in temperature can reach the little temperature difference of trying one's best,
It is 4) large with the scope of the thermal conductivity factor of glass heat-conducting silica gel sheet and stability good,
5) with structurally poor the making up of technique work of glass heat-conducting silica gel sheet, reduce the poor requirement of technique work of radiator and radiator structure part,
6) with glass heat-conducting silica gel sheet, there is the performance of insulation,
7) with the effect of glass heat-conducting silica gel sheet tool damping sound-absorbing,
8) band glass heat-conducting silica gel sheet has installation, test, reusable convenience.
Band glass heat-conducting silica gel sheet 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 thermal conductivity factor.
The specific embodiment
By embodiment, the invention will be further described, but the present invention is not limited by following examples.
Embodiment 1
(1) take 15 kilograms of 15 kilograms, carborundum, 45 kilograms of aluminium powders and boron nitride, be uniformly mixed, make mixing heat filling.
Described carborundum, aluminium powder and boron nitride, used Powdered or graininess, its shape can be amorphous, spherical or any shape, and preferably adopting average grain diameter is 0.1-100 micron.
(2) with coupling agent, heat filling is carried out to surface modification treatment: get above-mentioned 65 kilograms and mix heat filling under high-speed stirred, rotating speed is 2000r/min, spray into 0.65 kilogram of coupling agent isopropyl tri(dioctylpyrophosphato)titanate, then continue to stir 10 minutes, obtain modification heat filling;
(2) by 35 kilograms of methyl vinyl silicone rubbers, above-mentioned whole modification heat filling and 4 kilograms of Vulcanization accelerator TMTDs stirrer for mixing 2 hours, make heat conductive silica gel.
(3) two sides of glass fabric is all coated with and is covered with heat conductive silica gel, can make band glass heat-conducting silica gel sheet of the present invention.The thickness of the heat conductive silica gel that described glass fabric applies is 2mm.
Comparative example 1
(1) with coupling agent, heat filling is carried out to surface modification treatment: 65 kilograms of carborundum are under high-speed stirred, rotating speed is 2000r/min, spray into 0.65 kilogram of coupling agent isopropyl tri(dioctylpyrophosphato)titanate, then continue to stir 10 minutes, obtain modification heat filling;
(2) by 35 kilograms of methyl vinyl silicone rubbers, above-mentioned whole modification heat filling and 4 kilograms of Vulcanization accelerator TMTDs stirrer for mixing 2 hours, make heat conductive silica gel.
(3) two sides of glass fabric is all coated with and is covered with heat conductive silica gel.The thickness of the heat conductive silica gel that described glass fabric applies is 2mm.
Comparative example 2
(1) with coupling agent, heat filling is carried out to surface modification treatment: 65 kilograms of aluminium powders are under high-speed stirred, rotating speed is 2000r/min, spray into 0.65 kilogram of coupling agent isopropyl tri(dioctylpyrophosphato)titanate, then continue to stir 10 minutes, obtain modification heat filling;
(2) by 35 kilograms of methyl vinyl silicone rubbers, above-mentioned whole modification heat filling and 4 kilograms of Vulcanization accelerator TMTDs stirrer for mixing 2 hours, make heat conductive silica gel.
(3) two sides of glass fabric is all coated with and is covered with heat conductive silica gel.The thickness of the heat conductive silica gel that described glass fabric applies is 2mm.
Comparative example 3
(1) with coupling agent, heat filling is carried out to surface modification treatment: 65 kilograms of boron nitride are under high-speed stirred, rotating speed is 2000r/min, spray into 0.65 kilogram of coupling agent isopropyl tri(dioctylpyrophosphato)titanate, then continue to stir 10 minutes, obtain modification heat filling;
(2) by 35 kilograms of methyl vinyl silicone rubbers, above-mentioned whole modification heat filling and 4 kilograms of Vulcanization accelerator TMTDs stirrer for mixing 2 hours, make heat conductive silica gel.
(3) two sides of glass fabric is all coated with and is covered with heat conductive silica gel.The thickness of the heat conductive silica gel that described glass fabric applies is 2mm.
Test case:
| Embodiment 1 | Comparative example 1 | Comparative example 2 | Comparative example 3 | |
| Thermal conductivity factor, W/m.k | 1.63 | 1.24 | 1.28 | 1.20 |
Thermal conductivity factor adopts ASTM D5470 standard to test.The present invention adopts carborundum, aluminium powder and three kinds of composite uses of heat filling of boron nitride as can be seen from the above table, and its thermal conductivity factor is obviously better than only adopting 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 to this; any those of ordinary skill in the art are in the disclosed technical scope of the present invention; the variation that can expect without creative work or replacement, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain that claims were limited.
Claims (4)
1. be with glass heat-conducting silica gel sheet for one kind, it is characterized in that comprising glass fabric, the coated on both sides of described glass fabric has heat conductive silica gel, described heat conductive silica gel is composited by following component by weight: methyl vinyl silicone rubber 30-40 part, heat filling 50-80 part, Vulcanization accelerator TMTD 2-6 part and coupling agent, the consumption of described coupling agent is the 0.5-2% of heat filling weight, and described heat filling is the mixture of carborundum, aluminium powder and boron nitride.
2. band glass heat-conducting silica gel sheet as claimed in claim 1, is characterized in that: described heat filling consists of by weight following component: carborundum 10-20 part, aluminium powder 40-50 part and boron nitride 10-20 part.
3. band glass heat-conducting silica gel sheet as claimed in claim 1 or 2, it is characterized in that: described coupling agent is isopropyl tri(dioctylpyrophosphato)titanate, (N-aminoethyl one aminoethyl isopropyl titanate, two (two 13 ester groups of phosphoric acid) metatitanic acid four monooctyl esters, two (two 13 ester groups of phosphoric acid) metatitanic acid four (2, 2--allyloxy methyl isophthalic acid-butyl) ester, two (dioctyl pyrophosphoryl oxygen base) oxo acetic acid titanium, two (dioctyl pyrophosphoryl oxygen base) metatitanic acid vinyl acetate, three caprylyl isopropyl titanates, different diisobutylene acyl group iso stearate base isopropyl titanate, three (dodecyl benzoyloxy group) isopropyl titanate, the different hard ester group isopropyl titanate of two acryloxies, isopropyl tri(dioctylphosphato)titanate, three cumic aldehyde methyl isopropyl titanates, two (dioctyl pyrophosphoryl oxygen base) tetraisopropyl titanate, with a kind of or its mixture in isopropyl distearyl acyl-oxygen base Aluminate.
As described in any one in claim 1-3 with the preparation method of glass heat-conducting silica gel sheet, it is characterized in that, adopt following method to be prepared from:
(1) with coupling agent, heat filling is carried out to surface modification treatment: under high-speed stirred, rotating speed is 1500-3000r/min, sprays into coupling agent by heat filling, then continue to stir 5-15 minute, obtain modification heat filling;
(2) by methyl vinyl silicone rubber, modification heat filling and Vulcanization accelerator TMTD at stirrer for mixing 1-3 hour, make heat conductive silica gel;
(3) two sides of glass fabric is all coated with and is covered with heat conductive silica gel.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109411115A (en) * | 2018-09-04 | 2019-03-01 | 苏州泰吉诺新材料科技有限公司 | A kind of high torque heat-conduction insulation spacer material and its production technology |
| CN111057483A (en) * | 2019-12-09 | 2020-04-24 | 上海纪航电子科技有限公司 | Silica gel belt |
| CN111690333A (en) * | 2020-06-11 | 2020-09-22 | 东莞市兆科电子材料科技有限公司 | Heat-conducting gasket and preparation method and application thereof |
| CN114854208A (en) * | 2022-04-26 | 2022-08-05 | 苏州阳池科技有限公司 | Heat-conducting silica gel gasket composite material and preparation method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109411115A (en) * | 2018-09-04 | 2019-03-01 | 苏州泰吉诺新材料科技有限公司 | A kind of high torque heat-conduction insulation spacer material and its production technology |
| CN109411115B (en) * | 2018-09-04 | 2020-02-28 | 苏州泰吉诺新材料科技有限公司 | High-torque heat-conducting insulating gasket material and production process thereof |
| CN111057483A (en) * | 2019-12-09 | 2020-04-24 | 上海纪航电子科技有限公司 | Silica gel belt |
| CN111690333A (en) * | 2020-06-11 | 2020-09-22 | 东莞市兆科电子材料科技有限公司 | Heat-conducting gasket and preparation method and application thereof |
| CN114854208A (en) * | 2022-04-26 | 2022-08-05 | 苏州阳池科技有限公司 | Heat-conducting silica gel gasket composite material and preparation method thereof |
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Application publication date: 20140212 |