CN102756528B - Preparation method of metal-fluororubber composite sealing plate - Google Patents
Preparation method of metal-fluororubber composite sealing plate Download PDFInfo
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- CN102756528B CN102756528B CN201110103455.2A CN201110103455A CN102756528B CN 102756528 B CN102756528 B CN 102756528B CN 201110103455 A CN201110103455 A CN 201110103455A CN 102756528 B CN102756528 B CN 102756528B
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- 229920001973 fluoroelastomer Polymers 0.000 title claims abstract description 22
- 238000002360 preparation method Methods 0.000 title claims abstract description 22
- 238000007789 sealing Methods 0.000 title abstract description 18
- 239000002131 composite material Substances 0.000 title abstract description 11
- 229910052751 metal Inorganic materials 0.000 claims abstract description 41
- 239000002184 metal Substances 0.000 claims abstract description 41
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 27
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 17
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 14
- 239000012046 mixed solvent Substances 0.000 claims abstract description 13
- ZFVMWEVVKGLCIJ-UHFFFAOYSA-N bisphenol AF Chemical compound C1=CC(O)=CC=C1C(C(F)(F)F)(C(F)(F)F)C1=CC=C(O)C=C1 ZFVMWEVVKGLCIJ-UHFFFAOYSA-N 0.000 claims abstract description 12
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims abstract description 11
- 239000000920 calcium hydroxide Substances 0.000 claims abstract description 11
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims abstract description 11
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 claims abstract description 10
- 150000001875 compounds Chemical class 0.000 claims description 38
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 27
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 claims description 16
- 238000002156 mixing Methods 0.000 claims description 16
- 230000008719 thickening Effects 0.000 claims description 15
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 14
- 239000008119 colloidal silica Substances 0.000 claims description 14
- 229910052731 fluorine Inorganic materials 0.000 claims description 14
- 239000011737 fluorine Substances 0.000 claims description 14
- 239000003517 fume Substances 0.000 claims description 14
- 238000010073 coating (rubber) Methods 0.000 claims description 13
- 239000004215 Carbon black (E152) Substances 0.000 claims description 10
- 229930195733 hydrocarbon Natural products 0.000 claims description 10
- 150000002430 hydrocarbons Chemical class 0.000 claims description 10
- 239000006229 carbon black Substances 0.000 claims description 7
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 10
- 239000011248 coating agent Substances 0.000 abstract description 9
- 238000000576 coating method Methods 0.000 abstract description 9
- 239000003973 paint Substances 0.000 abstract description 9
- 229920001971 elastomer Polymers 0.000 abstract description 7
- 239000000463 material Substances 0.000 abstract description 7
- 239000002245 particle Substances 0.000 abstract description 4
- 238000004073 vulcanization Methods 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 2
- 241000872198 Serjania polyphylla Species 0.000 abstract 1
- 229910021485 fumed silica Inorganic materials 0.000 abstract 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 abstract 1
- 239000006235 reinforcing carbon black Substances 0.000 abstract 1
- 238000001914 filtration Methods 0.000 description 7
- 238000012360 testing method Methods 0.000 description 7
- 230000006835 compression Effects 0.000 description 6
- 238000007906 compression Methods 0.000 description 6
- 238000002485 combustion reaction Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 239000000295 fuel oil Substances 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- 239000012744 reinforcing agent Substances 0.000 description 4
- 229920002449 FKM Polymers 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000009172 bursting Effects 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 239000008393 encapsulating agent Substances 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 230000030279 gene silencing Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
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- 230000005540 biological transmission Effects 0.000 description 1
- 238000005282 brightening Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000008199 coating composition Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 230000002939 deleterious effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 238000003618 dip coating Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000003502 gasoline Substances 0.000 description 1
- 239000010711 gasoline engine oil Substances 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000013008 thixotropic agent Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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- Sealing Material Composition (AREA)
- Gasket Seals (AREA)
Abstract
The invention belongs to the field of metal-fluororubber composite materials, and specifically relates to a preparation method of a metal-fluororubber composite sealing plate. According to the invention, a tackifying accelerating agent, a fluororubber primer paint, and a fluororubber surface coating are sequentially coated on a surface-cleaned metal plate; the materials are subjected to high-temperature vulcanization for 1-3h under a temperature of 185-250 DEG C, such that a product is obtained. The method is characterized in that the fluororubber primer paint is prepared through the steps that: 100 parts by weight of 26-type fluororubber raw rubber, 1-6 parts by weight of fumed silica with a specific surface area of 150-400m<2>/g, 15-40 parts by weight of semi-reinforcing carbon black with an average particle size of 50-80mum and a specific surface area of 80-150m<2>/g, 2-15 parts by weight of magnesium oxide, 0-10 parts by weight of calcium hydroxide, and 0.4-2.0 parts by weight of zinc stearate are well mixed in an open mill/Banbury mixer; a mixed solvent with a weight 2-4 times that of the mixed rubber is added; the mixed rubber is sufficiently dissolved, and the solution is filtered, such that the fluororubber primer paint is prepared. When in use, 2-6 parts by weight of a bisphenol AF vulcanization agent are added to the paint. The method is advantaged in simple process, and convenient operation. The product is advantaged in conquassation resistance, good adhesion, and excellent sealing effect.
Description
Technical field: the preparation field that the invention belongs to metal and fluorubber composite, be specifically related to a kind of be used in high temperature and chemical mediator environment under make the preparation method of the metal fluorubber compound seal plate of sealing gasket.
Background technology: fluorubber, due to the combination property of its excellence, widely uses in automobile heating/cooling system, fuel oil/emission control system, engine/transmission system etc., normally provides with product forms such as fluorubber sealing gasket, sealing ring, fluorine rubber-pipes.Along with the raising of automobile driving speed and engine are to miniaturization, the operating temperature of internal combustion engine is more and more higher; Be the reply oil progressively exhausted global energy crisis caused, biological gasoline/diesel oil is added in vehicle fuel, and traditional cylinder liner encapsulant can not meet instructions for use simultaneously.Abroad brought into use metal fluorubber compound seal plate to make the cylinder liner material of the higher internal combustion engine of the requirements such as sedan limousine, truck, motorcycle from last century Mo, domestic from the beginning of this century carry out the research work of this respect and have relevant bibliographical information and invention disclosed patent.The articles such as the University Of Nanchang Liu Jie Master's thesis of 2007 " research of new viton coating metal sealing gasket for internal combustion engine use ", the East China University of Science Qian Yinguo Master's thesis of 2009 " development of washing fluorubber sealing plate material ", describe the preparation of fluororubber coating, the selection of vulcanizing agent, the various factors affecting fluorine rubber coating performance and the obtained service condition of metal fluorubber composite plate in automobile engine in detail.Haishan Packing Material Co., Ltd., Zhoushan City executes the patent " sealing and damping and silencing material and preparation method thereof of sheet metal coating rubber " (CN200410052794.2.) of central scroll, relate to the rubber seal and damping and silencing material and preparation method thereof of the coating of a kind of sheet metal, this material comprises sheet metal, the coat of metallizing thin plate, it is made up of rubber, filler and compounding ingredient, compensate for the temperature tolerance of other nonmetallic materials, the deficiency of fatigue resistance and creep properties and asbestos base encapsulant to the deleterious aspects of human body.The patent " preparation technology of new viton coating metal sealing gasket for internal combustion engine use " (CN200710105734.6.) of University Of Nanchang Qiu Zu Min etc., relate to a kind of preparation technology of new viton coating metal sealing gasket for internal combustion engine use, its advantage to adopt spraying and serigraphy two kinds of technique fluorubber to carry out constructing and not needing primary coat.
The metal fluorubber composite plate of above-mentioned pertinent literature and patent report has the performances such as high temperature resistant, resistance to fuel oil, ageing-resistant, sealing, by primary coat or add the methods such as coupling agent make fluorine rubber coating have good adhesive force to metallic plate in fluororubber coating formula Design, but all exist adhesive force not, fluorine rubber coating is under the high temperature conditions by problems such as conquassation.
Summary of the invention
The object of the invention is to overcome fluorine rubber coating in prior art high temperature, fuel oil, press condition under easily lost the technological deficiency of sealing effectiveness by conquassation, provide that a kind of technique is simple, easy to operate, product resistance to compression is burst, the preparation method of the metal fluorubber compound seal plate of strong adhesion, sealing effectiveness excellence.
The object of the invention is to be realized by following technical proposals.
The preparation method of metal fluorubber compound seal plate of the present invention, apply thickening promoter successively on the clean metallic plate of surface clean, fluorubber subbing, fluorubber investment precoat, within high temperature vulcanized 1 ~ 3 hour, product is obtained through 185 ~ 250 DEG C, be characterized in that wherein said fluorubber subbing is by 26 type crude fluororubber, 100 parts of (weight portions, as follows), fume colloidal silica 1 ~ 6 part, carbon black 15 ~ 40 parts, magnesia 2-15 part, 0 ~ 10 part, calcium hydroxide, zinc stearate 0.4 ~ 2.0 part, in on a mill until/banbury mixing evenly after, add the mixed solvent of elastomeric compound parts by weight 2 ~ 4 times, filter rear obtained after abundant dissolving, during use, add the bisphenol AF vulcanizing agent of 2 ~ 6 parts.
In such scheme, the Mooney viscosity of 26 type crude fluororubber in described fluorubber subbing preferably 35 ~ 600,000.
White carbon in the subbing of fluorubber described in such scheme is antisettling agent, be specific area is 150 ~ 400m
2the fume colloidal silica of/g.
Carbon black in the subbing of fluorubber described in such scheme is reinforcing agent, is average grain diameter 50 ~ 80um, specific area is 80 ~ 150m
2the semi-reinforcing hydrocarbon black of/g.
Magnesia in the subbing of fluorubber described in such scheme, calcium hydroxide are acid-acceptor, and its average grain diameter is 0.5 ~ 5.5um.
Mixed solvent in the subbing of fluorubber described in such scheme by ethyl acetate and butyl acetate by 1: 0.5 ~ 1.5 weight ratio mix.
White carbon in the subbing of fluorubber described in such scheme is better specific area is 300 ~ 380m
2the fume colloidal silica of/g.
Magnesia described in such scheme is better 5 ~ 10 parts.
The curing temperature of fluorine rubber coating described in such scheme is better 220 DEG C ~ 240 DEG C, and cure time is better 1.5 ~ 2.5 hours.
Concrete preparation process of the present invention is: after the metal steel strap one or two sides clean through surface clean applies special thickening promoter, heating makes its surface drying, then fluorubber subbing is applied by modes such as roller coat, spraying, showering or dip-coatings, after drying tunnel heating makes paint solvent volatilize and reaches primary solidification, apply fluorubber investment precoat again, again investment precoat solvent is made to volatilize and reach primary solidification by drying tunnel, last scumbling one deck antitack agent, proceeds to high temperature post vulcanization in convection oven and namely obtains metal fluorubber compound seal plate by composite plate.Apply thickening promoter principal security fluorine rubber coating and between metallic plate, reach reliably bonding, fluorubber subbing provides the crush resistance of composite plate excellence, investment precoat provides surface-brightening, sealing property, and outermost layer release coating ensures that metal fluorubber compound seal plate is coated with interlayer adhesion in weight situation; And fluorubber itself has high temperature resistant, the excellent properties such as oil resistant, chemical-resistant resistance, weather-resistant, radiation hardness.Therefore this metal fluorubber compound seal plate has high temperature resistant, excellent air-tightness, solvent resistant (automobile oil 10w/30), fluorine rubber coating and the Good All-around Property such as substrate bonding is firm and resistance to compression is burst, and metal fluorubber compound seal plate is deposited in process and can not be produced adhesion because of weight each other.
The present invention is the technical scheme of inventor by practical exploration science practicality out, the compression of common fluorubber is larger, fluorine rubber coating high temperature, fuel oil, press condition under easily lost sealing effectiveness by conquassation, the semi-reinforcing hydrocarbon black that the present invention adopts particle diameter larger makes reinforcing agent, fume colloidal silica makes thixotropic agent, by optimization of C/C composites and preparation technology, coordinate bisphenol AF vulcanizing agent, obtained fluorubber subbing, its compression is low, crush resistance good, can ensure that primary coating technique obtains thicker film and film crush resistance is excellent.But because carbon black particle used is thicker, make bottom paint film rough surface, tarnish, therefore on its face, scumbling one deck makes reinforcing agent, good leveling property, the curing system fluorubber investment precoat consistent with subbing with the carbon black that particle diameter is thinner, and the fluorine rubber coating simultaneously after complete cure is fine and smooth, level and smooth, bright.Therefore the present invention is ensured film thickness by subbing, is solved the bursting property of resistance to compression of paint film, investment precoat ensures outward appearance, the solution atmospheric pressure sealed of paint film, by the method that fluorubber subbing, investment precoat combine, well solve the conquassation of fluorine rubber coating high temperature and normal temperature sealing, surface smoothing light contradiction.This metal fluorubber compound seal plate has:
(1) outward appearance: bright, level and smooth;
(2) paint film adhesion: cut edge is completely level and smooth, and none lattice comes off (cross-hatching);
(3) temperature tolerance: after 250 DEG C × 12h, without anomalies such as foaming come off;
(4) oil resistant: after 170 DEG C of gasoline engine oil 10W/30 soak 70h, without foaming obscission;
(5) resistant to liquid corrosivity: in 100 DEG C of water and antifreezing agent 1:1 after 72h, without coming off;
(6) bursting property of resistance to compression: torsion 28N.m × 230 DEG C × 1h, conquassation area≤5%;
(7) air-tightness: chamber pressure 0.40 ~ 0.45MPa, 10min in water, bubble-free;
(8) antistick characteristic: under weight (30N.m × 96h × 80 DEG C) situation, composite plate is each other without adhesion.
Composite plate of the present invention is made up of sheet metal and fluorine rubber coating, is applicable to manufacturing various automobile and motorcycle IC engine cylinder gasket, import/exhaust manifold spacer refrigerant condenser sealing gasket and disc type and stops sheet beam etc.
The invention is further illustrated by the following examples, and the present invention is not limited only to described embodiment.
Detailed description of the invention:
Embodiment one
Take Mooney viscosity preferably 400,000 26 type crude fluororubber 100 parts (weight portion, as follows), specific area is 380m
2the fume colloidal silica of/g 2 parts, average grain diameter 58um, specific area 100m
2the semi-reinforcing hydrocarbon black of/g 20 parts, average grain diameter is 6 parts, 6.5um magnesia, average grain diameter is 4 parts, 3.5um calcium hydroxide, zinc stearate 0.5 part, on a mill until mixing evenly after, add the ethyl acetate by 1: 1.3 part by weight mixing and the n-butyl acetate mixed solvent of elastomeric compound parts by weight 3.5 times, abundant dissolving, obtained fluorubber subbing after filtering, then on the clean metallic plate of surface clean, thickening promoter is applied successively, be added with the above-mentioned fluorubber subbing of 4.5 parts of bisphenol AF vulcanizing agents, fluorubber investment precoat, within high temperature vulcanized 1.5 hours, metal fluorubber compound seal panel products is obtained through 230 DEG C, the properties test result of this product is in table 1.
Embodiment two
Take Mooney viscosity preferably 500,000 26 type crude fluororubber 100 parts (weight portion, as follows), specific area is 300m
2the fume colloidal silica of/g 3 parts, average grain diameter 65um, specific area 105m
2the semi-reinforcing hydrocarbon black of/g 24 parts, average grain diameter is 5 parts, 2.5um magnesia, average grain diameter is 5 parts, 3.0um calcium hydroxide, zinc stearate 0.65 part, on a mill until mixing evenly after, add the ethyl acetate by 1: 1 part by weight mixing and the n-butyl acetate mixed solvent of elastomeric compound parts by weight 3.1 times, abundant dissolving, obtained fluorubber subbing after filtering, then on the clean metallic plate of surface clean, thickening promoter is applied successively, be added with the above-mentioned fluorubber subbing of 4 parts of bisphenol AF vulcanizing agents, fluorubber investment precoat, within high temperature vulcanized 1.5 hours, metal fluorubber compound seal panel products is obtained through 235 DEG C, the properties test result of this product is in table 1.
Embodiment three
Take Mooney viscosity preferably 450,000 26 type crude fluororubber 100 parts (weight portion, as follows), specific area is 200m
2the fume colloidal silica of/g 5 parts, average grain diameter 75um, specific area 85m
2the semi-reinforcing hydrocarbon black of/g 35 parts, average grain diameter is 9 parts, 3.5um magnesia, average grain diameter is 2 parts, 5.0um calcium hydroxide, zinc stearate 1.0 parts, on a mill until mixing evenly after, add the ethyl acetate by 1: 0.8 part by weight mixing and the n-butyl acetate mixed solvent of elastomeric compound parts by weight 3.8 times, abundant dissolving, obtained fluorubber subbing after filtering, then on the clean metallic plate of surface clean, thickening promoter is applied successively, be added with the above-mentioned fluorubber subbing of 5.5 parts of bisphenol AF vulcanizing agents, fluorubber investment precoat, within high temperature vulcanized 1.5 hours, metal fluorubber compound seal panel products is obtained through 220 DEG C, the properties test result of this product is in table 1.
Embodiment four
Take Mooney viscosity preferably 550,000 26 type crude fluororubber 100 parts (weight portion, as follows), surface area is 150m
2the fume colloidal silica of/g 3.5 parts, average grain diameter 62um, specific area 130m
2the semi-reinforcing hydrocarbon black of/g 28 parts, average grain diameter is 7 parts, 2.6um magnesia, average grain diameter is 3 parts, 3.3um calcium hydroxide, zinc stearate 0.75 part, on a mill until mixing evenly after, add the ethyl acetate by 1: 1.2 part by weight mixing and the n-butyl acetate mixed solvent of elastomeric compound parts by weight 3.8 times, abundant dissolving, obtained fluorubber subbing after filtering, then on the clean metallic plate of surface clean, thickening promoter is applied successively, be added with the above-mentioned fluorubber subbing of 4.5 parts of bisphenol AF vulcanizing agents, fluorubber investment precoat, within high temperature vulcanized 1.5 hours, metal fluorubber compound seal panel products is obtained through 230 DEG C, the properties test result of this product is in table 1.
Embodiment five
Take Mooney viscosity preferably 420,000 26 type crude fluororubber 100 parts (weight portion, as follows), specific area is 380m
2the fume colloidal silica of/g 2.8 parts, average grain diameter 63um, specific area 130m
2the semi-reinforcing hydrocarbon black of/g 22 parts, average grain diameter is 6 parts, 3.5um magnesia, average grain diameter is 3.5 parts, 3.0um calcium hydroxide, zinc stearate 0.55 part, on a mill until mixing evenly after, add the ethyl acetate by 1: 0.9 part by weight mixing and the n-butyl acetate mixed solvent of elastomeric compound parts by weight 3.1 times, abundant dissolving, obtained fluorubber subbing after filtering, then on the clean metallic plate of surface clean, thickening promoter is applied successively, be added with the above-mentioned fluorubber subbing of 5.0 parts of bisphenol AF vulcanizing agents, fluorubber investment precoat, within high temperature vulcanized 1.2 hours, metal fluorubber compound seal panel products is obtained through 240 DEG C, the properties test result of this product is in table 1.
Embodiment six
Take Mooney viscosity preferably 450,000 26 type crude fluororubber 100 parts (weight portion, as follows), specific area is 300m
2the fume colloidal silica of/g 4.0 parts, average grain diameter 75um, specific area 115m
2the semi-reinforcing hydrocarbon black of/g 32 parts, average grain diameter is 9 parts, 3.8um magnesia, zinc stearate 0.65 part, on a mill until mixing evenly after, add the ethyl acetate by 1: 0.65 part by weight mixing and the n-butyl acetate mixed solvent of elastomeric compound parts by weight 4 times, abundant dissolving, obtained fluorubber subbing after filtering, then on the clean metallic plate of surface clean, thickening promoter is applied successively, be added with the above-mentioned fluorubber subbing of 5 parts of bisphenol AF vulcanizing agents, fluorubber investment precoat, within high temperature vulcanized 2.5 hours, metal fluorubber compound seal panel products is obtained through 210 DEG C, the properties test result of this product is in table 1.
Embodiment seven
Take Mooney viscosity preferably 540,000 26 type crude fluororubber 100 parts (weight portion, as follows), specific area is 300m
2the fume colloidal silica of/g 2.3 parts, average grain diameter 64um, specific area 90m
2the semi-reinforcing hydrocarbon black of/g 26 parts, average grain diameter is 6.5 parts, 4.2um magnesia, average grain diameter is 3.5 parts, 3.8um calcium hydroxide, zinc stearate 0.75 part, in banbury mixing evenly after, add the ethyl acetate by 1: 0.75 part by weight mixing and the n-butyl acetate mixed solvent of elastomeric compound parts by weight 3.5 times, abundant dissolving, obtained fluorubber subbing after filtering, then on the clean metallic plate of surface clean, thickening promoter is applied successively, be added with the above-mentioned fluorubber subbing of 4.6 parts of bisphenol AF vulcanizing agents, fluorubber investment precoat, within high temperature vulcanized 1.5 hours, metal fluorubber compound seal panel products is obtained through 225 DEG C, the properties test result of this product is in table 1.
The investment precoat that the fluorubber investment precoat of above embodiment and thickening promoter can adopt existing metal fluorubber compound seal plate general and thickening promoter.As the investment precoat general fluororubber compounded rubber that can to adopt with N990 carbon black be reinforcing agent adds the bisphenol AF vulcanizer of 3 ~ 4 times of above-mentioned mixed solvents, 3 ~ 5 parts (weight portions), the CH607 that thickening promoter can adopt Lord Corp. of the fluorubber special tackifier U.S. to produce, but be better the special fluorubber investment precoat of metal fluorubber compound seal plate and the HT-103 thickening promoter that adopt the supporting development of Guilin Jin Gu new material Co., Ltd.
The metallic plate for compound that the present invention adopts is corrosion resistant plate/band, steel spring plate, low carbon steel plate, low alloy steel plate, various hot-rolled and cold-rolled sheet iron and various non-ferrous metal thin, and thickness is 0.2 ~ 1.0mm preferably.
There is the problem of mutual adhesion when pile in the present invention, by fluorine rubber coating surface scumbling layer of surface antitack agent or brush thin layer graphite on its surface or take to separate with paper or the method for mmic package solves in order to solve metal fluorubber compound seal plate.
Claims (8)
1. the preparation method of a metal fluorubber compound seal plate, apply thickening promoter successively on the clean metallic plate of surface clean, fluorubber subbing and fluorubber investment precoat, within high temperature vulcanized 1 ~ 3 hour, product is obtained through 185 ~ 250 DEG C, it is characterized in that wherein said fluorubber subbing is by 26 type crude fluororubber 100 weight portions, fume colloidal silica 1 ~ 6 weight portion, carbon black 15 ~ 40 weight portion, magnesia 2-15 weight portion, calcium hydroxide 0 ~ 10 weight portion and zinc stearate 0.4 ~ 2.0 weight portion, in on a mill until/banbury mixing evenly after, add the mixed solvent of elastomeric compound parts by weight 2 ~ 4 times, filter rear obtained after abundant dissolving, during use, add the bisphenol AF vulcanizing agent of 2 ~ 6 weight portions, carbon black in described fluorubber subbing is average grain diameter 50 ~ 80um, specific area is 80 ~ 150m
2the semi-reinforcing hydrocarbon black of/g.
2. the preparation method of metal fluorubber compound seal plate according to claim 1, the Mooney viscosity that it is characterized in that 26 type crude fluororubber in described fluorubber subbing preferably 35 ~ 600,000.
3. the preparation method of metal fluorubber compound seal plate according to claim 1, the white carbon that it is characterized in that in described fluorubber subbing is specific area is 150 ~ 400m
2the fume colloidal silica of/g.
4. the preparation method of metal fluorubber compound seal plate according to claim 1, is characterized in that magnesia, the calcium hydroxide in described fluorubber subbing, and its average grain diameter is 0.5 ~ 5.5um.
5. the preparation method of metal fluorubber compound seal plate according to claim 1, it is characterized in that mixed solvent in described fluorubber subbing by ethyl acetate and butyl acetate by 1: 0.5 ~ 1.5 weight ratio mix.
6. the preparation method of metal fluorubber compound seal plate according to claim 1, the white carbon that it is characterized in that in described fluorubber subbing is specific area is 300 ~ 380m
2the fume colloidal silica of/g.
7. the preparation method of metal fluorubber compound seal plate according to claim 1, is characterized in that described magnesia is 5 ~ 10 weight portions.
8. the preparation method of metal fluorubber compound seal plate according to claim 1, it is characterized in that described fluorine rubber coating curing temperature is 220 DEG C ~ 240 DEG C, cure time is 1.5 ~ 2.5 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110103455.2A CN102756528B (en) | 2011-04-25 | 2011-04-25 | Preparation method of metal-fluororubber composite sealing plate |
Applications Claiming Priority (1)
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| CN103016730B (en) * | 2012-12-10 | 2015-09-30 | 成都宇都密封制品有限公司 | Fluorine rubber coating steel plate |
| CN103450753B (en) * | 2013-09-17 | 2016-03-16 | 烟台石川密封科技股份有限公司 | A kind of fluororubber coating and preparation method thereof |
| CN103694810B (en) * | 2013-11-26 | 2017-02-08 | 岱山县同道密封件厂 | Manufacturing method for coating on surface of cylinder ring |
| CN103804825A (en) * | 2014-03-13 | 2014-05-21 | 苏州市相城区明达复合材料厂 | Antibacterial rubber roll |
| CN106752442A (en) * | 2016-12-09 | 2017-05-31 | 南阳天密封股份有限公司 | A kind of fluorubber composite metal plate and preparation method thereof |
| CN107351415B (en) * | 2017-04-26 | 2021-02-02 | 东莞市长润家居制品有限公司 | Silica gel bonding process |
| CN108841261A (en) * | 2018-03-12 | 2018-11-20 | 长春蓝天高新技术密封材料有限责任公司 | The preparation method of modified fluorubber metal composite sealing plate |
| JP7385215B2 (en) * | 2020-02-13 | 2023-11-22 | 日本製鉄株式会社 | Composite, gasket, method of manufacturing composite and painted metal plate |
| CN111497387A (en) * | 2020-04-22 | 2020-08-07 | 咸阳海龙密封复合材料有限公司 | Metal rubber composite sealing plate and solid state manufacturing method thereof |
| CN111534124B (en) * | 2020-05-07 | 2022-05-24 | 北京宇航系统工程研究所 | High-temperature rubber-generating thermal protection material and preparation method thereof |
| CN112126347B (en) * | 2020-09-23 | 2022-02-22 | 长春蓝天密封技术开发有限公司 | Preparation method of molybdenum disulfide coating |
| CN115895146A (en) * | 2022-12-19 | 2023-04-04 | 四川道弘新材料有限公司 | Low-temperature-resistant modified binary fluororubber gross rubber and preparation method and application thereof |
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Effective date of registration: 20160527 Address after: 541003 407, 409, University of science and technology, Qixing Road, Qixing District, Guilin, the Guangxi Zhuang Autonomous Region Patentee after: Guilin Jingu New Material Co. Ltd. Address before: 541001 Guilin Road, Diecai District, Guangxi, 3 Patentee before: Tang Gan |