CN106752442A - A kind of fluorubber composite metal plate and preparation method thereof - Google Patents
A kind of fluorubber composite metal plate and preparation method thereof Download PDFInfo
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- CN106752442A CN106752442A CN201611125218.5A CN201611125218A CN106752442A CN 106752442 A CN106752442 A CN 106752442A CN 201611125218 A CN201611125218 A CN 201611125218A CN 106752442 A CN106752442 A CN 106752442A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D127/00—Coating compositions based on 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; Coating compositions based on derivatives of such polymers
- C09D127/02—Coating compositions based on 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; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
- C09D127/12—Coating compositions based on 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; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/10—Materials in mouldable or extrudable form for sealing or packing joints or covers
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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
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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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- Life Sciences & Earth Sciences (AREA)
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Abstract
The invention provides a kind of fluorubber composite metal plate and preparation method thereof, it is related to encapsulant.A kind of fluorubber composite metal plate, including metal substrate, the two sides of the metal substrate set fluorine rubber coating, and the fluorine rubber coating is made up of the raw material of following mass parts：100 parts of fluorubber, 1 ~ 10 part of magnesia, 2 ~ 10 parts of calcium hydroxide, 2 ~ 10 parts of vulcanizing agent, 0.5 ~ 5 part of accelerator, 20 ~ 40 parts of carbon black, 1 ~ 5 part of modified alta-mud, 1 ~ 10 part of auxiliary agent.The compression ratio that the present invention develops fluorubber composite metal plate is 21 ~ 32%, rebound degree ＞ 65%, creep relaxation rate ＜ 5%, sealing ml/hr≤0.02, oil seal No leakage；Oil resistivity, winter resistance and its heat resistance are good, and aggregate performance goes out excellent rebound degree, creep-resistant property and heatproof oil resistance etc., and resultant effect is very prominent.
Description
Technical field
The invention belongs to encapsulant technical field, more particularly to a kind of fluorubber composite metal plate and preparation method thereof.
Background technology
Fluorubber is a kind of synthetic rubber that the extremely strong fluorine atom of electronegativity is connected on carbon atom on main chain or side chain, by
In C-F bond energys are big, fluorine atom covalent radius is small, therefore fluorubber has the incomparable excellent properties of other rubber, and it has
The performance such as heat-resisting, ageing-resistant, resistance to concentrated acid, alkaline-resisting and in oils, hydro carbons, solvent volume sweell(ing) be small, while also having good
Good physical and mechanical properties and electrical insulation capability and radiation resistance, are widely used in space flight, aviation, oil, automobile and family expenses
The fields such as electrical equipment.
With the raising of automobile driving speed and Engine Downsizing development, temperature in use is improved therewith, especially vapour
Car fuel oil adds the change of ethanol, and traditional metallic packing and asbestos collecting plate-composite metal plate sealing gasket can not expire
The so harsh requirement of foot.Foreign countries just have started to make sedan limousine, load-carrying card using metal fluorubber composite plate in last century Mo
The requirement such as car, motorcycle cylinder of internal combustion engine cushion material higher, because technical difficulty is big, the metal fluorubber that domestic manufacturer uses
Composite plate relies primarily on import at present.Due to developing rapidly for Domestic Automotive Industry, high-performance metal fluorubber compound seal plate
Demand it is increasing, correlative study has been increasingly becoming the focus of fluorubber application.Current fluorine rubber coating is attached with metal
Put forth effort that requirement can not be met；The crush resistance and air-tightness of fluorine rubber coating do not reach the requirement of high-performance enginer；And
Because gasket seal is complex-shaped, the roughness and flatness of sealing surface are relatively low, and bolt load is difficult to be uniformly distributed, and having all is
HTHP position, therefore the encapsulant at position must have compression ratio and rebound degree higher like this, while these set
Standby to be typically located among vibration and temperature fluctuation, bolt load easily relaxes, but equipment service life require it is very long,
Therefore the creep resistant relaxation ability of encapsulant is also even more important in selection.
A kind of preparation method of metal fluorubber compound seal plate of patent of Application No. 201110103455.2, is in table
Coating thickening accelerator, fluorubber subbing, fluorubber investment precoat successively on the metallic plate that face cleans up, through 185 ~
250 DEG C obtain product in high temperature vulcanized 1 ~ 3 hour, are characterized in wherein described fluorubber subbing by 26 type crude fluororubbers 100
Part (weight portion, as follows), specific surface area is 1 ~ 6 part of the fume colloidal silica of 150 ~ 400m2/g, 50 ~ 80um of average grain diameter, ratio
Surface area is 15 ~ 40 parts of the semi-reinforcing hydrocarbon black of 80 ~ 150m2/g, magnesia 2-15 parts, 0 ~ 10 part of calcium hydroxide, zinc stearate 0.4
~ 2.0 parts, be mixed on a mill/banbury it is even after, add the mixed solvent of 2 ~ 4 times of elastomeric compound parts by weight, fully dissolving
Be obtained after filtering afterwards, be when using, the characteristics of add 2 ~ 6 parts of bisphenol AF vulcanizing agent, the method process is simple, it is easy to operate,
Product resistance to compression is burst, adhesive force is strong, sealing effectiveness is excellent.Tang Gan etc.（Tang Gan, king grinds as people's metal fluorubber compound seal plates
Make and apply [J] specific rubber products, 2011,32 (5):39-41）By studying carbon black and vulcanizing system to fluororubber coating
The influence of combination property, prepares a fluororubber coating for metal fluorubber compound seal plate, and describe metal fluorine
The preparation method of rubber combined sealing plate and its applicable cases on cylinder lining of internal combustion engine.Above-mentioned fluorubber compound seal plate is equal
The sealing that can be used for the industries such as automobile, motorcycle is used, while continuing to develop with all trades and professions technology, such composite plate
Performance requirement also more and more higher, existing fluorubber composite plate need at the aspect such as sealing property and its creep resistant relaxation ability
Further improve.
The content of the invention
In view of this, the technical problems to be solved by the invention are to provide a kind of fluorubber composite metal plate, for vapour
The sealing of car, motorcycle, industrial sewing machine etc., to improve its compression, rebound performance, while strengthening its creep resistant relaxation ability.
In order to solve the above technical problems, the technical solution adopted by the present invention is：
A kind of fluorubber composite metal plate, including metal substrate, the two sides of the metal substrate set fluorine rubber coating, the fluorine
Rubber coating is made up of the raw material of following mass parts：100 parts of fluorubber, 1 ~ 10 part of magnesia, 2 ~ 10 parts of calcium hydroxide, vulcanizing agent
2 ~ 10 parts, 0.5 ~ 5 part of accelerator, 20 ~ 40 parts of carbon black, 1 ~ 5 part of modified alta-mud, 1 ~ 10 part of auxiliary agent.
Preferably, the vulcanizing agent is in penylene BMI, urethanes between bisphenol AF, N, N'-
Plant or two or more compositions.
Preferably, the accelerator is benzyl triphenyl phosphonium chloride phosphine, tetramethylthiuram disulfide, N- cyclohexyl -2- benzene
And the composition of one or more in thiazolesulfenamide.
Preferably, the carbon black is N990 carbon blacks or spray carbon black.
Preferably, the modified alta-mud is sodium bentonite.
Preferably, the auxiliary agent is one or more the combination in paraffin oil, methyl-silicone oil, carboxymethyl chitosan
Thing.
A kind of preparation method of fluorubber composite metal plate, the fluorubber composite metal plate includes metal substrate, described
The two sides of metal substrate sets fluorine rubber coating, comprises the following steps：
Step S1：Metal substrate is eliminated rust and ungrease treatment successively, surface impurity, the Metal Substrate after being processed is removed
Plate, metal substrate two sides after the treatment is respectively coated with adhesive；
Step S2：Fluorubber, magnesia, carbon black, calcium hydroxide, vulcanizing agent, accelerator, modified alta-mud and auxiliary agent are thrown successively
Mixing obtains elastomeric compound 2 ~ 3 times in entering banbury, after standing 20 ~ 24 hours, stirs more than 30 minutes, is well mixed, and roller coating is in institute
The surface of adhesive is stated, is stood to surface drying；Carried out in vulcanizing press high temperature vulcanized, obtain final product fluorubber composite metal plate.
Preferably, described adhesive is one or more the group in adhesive RA, phenolic resin, silane coupler
Compound.
Preferably, the high temperature vulcanized technological parameter is：Curing temperature be 180 ~ 220 DEG C, cure time be 15 ~
24min。
Preferably, the preparation method of the fluorubber composite metal plate, also including step S3：It is multiple in the fluorubber metal
Soft graphite the powder more than mesh of surface spraying 800 of plywood.
Compared with prior art, the beneficial effects of the invention are as follows：
The present invention by above-mentioned technical proposal provide a kind of excellent combination property fluorubber composite metal plate, the composite plate by
Metal substrate and its fluorine rubber coating composition of lower surface is coated on, its sealing property is excellent, and creep resistant relaxation ability is dashed forward
Go out.
The present invention is made improvements with fluorubber as primary raw material, so that its advantage becomes apparent from, defect is obtained effectively more
Mend.Magnesia as rubber materials important activity agent, it is added to improving the heat conductivility of product, anti-wear performance and its machine
Tool performance etc. mainly has the effect for promoting the vulcanization of rubber and its reinforcement with important influence, in the present invention its, strengthens sulphur
Change process, shortens cure time, improves the mechanical performance of coating.Although its beneficial effect is a lot, but its consumption is also not got over
Much better, improperly using can cause that the vulcanization effect of product is insufficient, and coating leveling is bad, under causing sealing property
Drop.The present invention determines that the addition of magnesia is 1 ~ 10 weight portion, is worked well through repetition test, is 5 weights especially in addition
Effect is optimal during amount part.
Under the action of heat, with fluorubber there is vulcanization crosslinking in vulcanizing agent, and accelerator then promotes the generation of the vulcanization reaction
And development, so that the rubber molecule of wire is cross-linked with each other reticulates structure, improve the stability of fluorubber molecular structure, enhancing
The mechanical performance and its chemical property of rubber.Vulcanizing agent, makes crosslink material form vulcanizate；Accelerator, promotes the vulcanization of material,
Association reaction and its Expected Results, on the basis of magnesia addition, determine the consumption of vulcanizing agent for 2 ~ 10 weight portions, and
It is preferred that one or more the composition between bisphenol AF, N, N'- in penylene BMI, urethanes；Really
The consumption of accelerator is determined for 0.5 ~ 5 weight portion, and preferably benzyl triphenyl phosphonium chloride phosphine, tetramethylthiuram disulfide, N- rings be
One or more composition in base -2-[4-morpholinodithio sulfenamide, coordinated between raw material can obtain effect and dash forward
The fluorine rubber coating for going out.
Fluorubber is because belonging to amorphism amorphous polymer, and intensity itself is relatively low, it is necessary to real by just having after reinforcement
With value.Can there are the materials such as carbon black, white carbon, magnesia, calcium carbonate, different reinforcing materials as fluorubber reinforcing agent at present
Material and its consumption have different influences to the performance of bipeltate coating.The present invention determines through repetition test, with respect to 100 weight
For the fluorubber of part, the carbon black of 20 ~ 40 weight portions of single addition can be carried dramatically as supporting material of the invention
The hardness and its adhesive force of high-foaming rubber coating, while pliability is also more satisfactory, and using the N990 charcoals of 25 weight portions
Black effect is best, and flow leveling also more preferably, is easy to coating to construct.
The compression ratio that the present invention develops fluorubber composite metal plate is 21 ~ 32%, rebound degree ＞ 65%, creep relaxation rate ＜
5%, sealing ml/hr≤0.02, oil seal No leakage；5 hours weightening ＜ 2% of the B of resistance to fuel oil room temperatures, thicken ＜ 3%；Resistance to ASTM3
150 DEG C of 5h weightening ＜ 3% of number oil, thicken ＜ 2%；100 DEG C × 22h of resistance to anti-icing fluid weightening ＜ 2%, thicken ＜ 3%；Heat-resisting 120 DEG C ×
22h weightenings -2 ~ 2, thicken -2 ~ 2.Aggregate performance goes out excellent rebound degree, creep-resistant property and heatproof oil resistance etc., comprehensive
Effect is very prominent.
Specific embodiment
With reference to embodiment, the invention will be further described, but the present invention is not limited only to these examples, for de-
On the premise of present inventive concept, carried out by it is any improvement be within the scope of the present invention.
Embodiment 1
A kind of fluorubber composite metal plate, including metal substrate, the two sides of the metal substrate set fluorine rubber coating, the fluorine
Rubber coating is made up of the raw material of following mass parts：100 parts of fluorubber, 4 parts of magnesia, 6 parts of calcium hydroxide, 4 parts of vulcanizing agent, rush
Enter 2 parts of agent, 25 parts of carbon black, 2 parts of modified alta-mud, 5 parts of auxiliary agent.
Wherein, carbon black is N990 carbon blacks；Modified alta-mud is sodium bentonite.
Accelerator is the composition of benzyl triphenyl phosphonium chloride phosphine and tetramethylthiuram disulfide, and both weight ratios are 5：
1。
Auxiliary agent is the weight portion of paraffin oil 2 and the weight portion of carboxymethyl chitosan 3.
Vulcanizing agent is raw materials used and its consumption is as shown in the table：
。
A kind of this group of preparation method of fluorubber composite metal plate of embodiment, the fluorubber composite metal plate includes metal
Substrate, the two sides of the metal substrate sets fluorine rubber coating, comprises the following steps：
Step S1：Metal substrate is eliminated rust and ungrease treatment successively, surface impurity, the Metal Substrate after being processed is removed
Plate, metal substrate two sides after the treatment is respectively coated with adhesive RA；
Specifically, ungrease treatment is by 20 times of degreasing agent dilute with water, metal substrate is cleaned, remove surface grease；
Step S2：Fluorubber, magnesia, carbon black, calcium hydroxide, vulcanizing agent, accelerator, modified alta-mud and auxiliary agent are thrown successively
Mixing obtains elastomeric compound 2 times in entering banbury, after standing 24 hours, stirs 30 minutes, is well mixed, and roller coating is in described adhesive
Surface, stands to surface drying；Carried out in vulcanizing press high temperature vulcanized, obtain final product fluorubber composite metal plate；
Wherein, the high temperature vulcanized technological parameter is：Curing temperature is 200 DEG C, and cure time is 18min.
Embodiment 2
A kind of fluorubber composite metal plate, including metal substrate, the two sides of the metal substrate set fluorine rubber coating, the fluorine
Rubber coating is made up of the raw material of following mass parts：100 parts of fluorubber, 1 part of magnesia, 2 parts of calcium hydroxide, 2 parts of vulcanizing agent, rush
Enter 0.5 part of agent, 20 parts of carbon black, 1 part of modified alta-mud, 1 part of auxiliary agent.
Wherein, carbon black is N990 carbon blacks；Modified alta-mud is sodium bentonite.
Vulcanizing agent is bisphenol AF.
Auxiliary agent is paraffin oil.
Accelerator is raw materials used and its consumption is as shown in the table：
。
A kind of this group of preparation method of fluorubber composite metal plate of embodiment, the fluorubber composite metal plate includes metal
Substrate, the two sides of the metal substrate sets fluorine rubber coating, comprises the following steps：
Step S1：Metal substrate is eliminated rust and ungrease treatment successively, surface impurity, the Metal Substrate after being processed is removed
Plate, metal substrate two sides after the treatment is respectively coated with adhesive；Described adhesive is adhesive RA and phenolic resin
Composition, both weight ratios are 2：1；
Step S2：Fluorubber, magnesia, carbon black, calcium hydroxide, vulcanizing agent, accelerator, modified alta-mud and auxiliary agent are thrown successively
Mixing obtains elastomeric compound 3 times in entering banbury, after standing 20 hours, stirs 40 minutes, is well mixed, and roller coating is in described adhesive
Surface, stands to surface drying；Carried out in vulcanizing press high temperature vulcanized, obtain final product fluorubber composite metal plate；
Wherein, the high temperature vulcanized technological parameter is：Curing temperature is 220 DEG C, and cure time is 15min.
Embodiment 3
A kind of fluorubber composite metal plate, including metal substrate, the two sides of the metal substrate set fluorine rubber coating, the fluorine
Rubber coating is made up of the raw material of following mass parts：100 parts of fluorubber, 10 parts of magnesia, 10 parts of calcium hydroxide, vulcanizing agent 10
Part, 5 parts of accelerator, 40 parts of carbon black, 5 parts of modified alta-mud, 10 parts of auxiliary agent.
Wherein, carbon black is N990 carbon blacks；Modified alta-mud is sodium bentonite.
Vulcanizing agent is the composition of bisphenol AF and urethanes, and both weight ratios are 7：1.
Accelerator is the composition of benzyl triphenyl phosphonium chloride phosphine and tetramethylthiuram disulfide, and both weight ratios are 5：
1。
Auxiliary agent is raw materials used and its consumption is as shown in the table：
。
A kind of preparation method of fluorubber composite metal plate, the fluorubber composite metal plate includes metal substrate, described
The two sides of metal substrate sets fluorine rubber coating, comprises the following steps：
Step S1：Metal substrate is eliminated rust and ungrease treatment successively, surface impurity, the Metal Substrate after being processed is removed
Plate, metal substrate two sides after the treatment is respectively coated with adhesive；Described adhesive is silane coupler；
Step S2：Fluorubber, magnesia, carbon black, calcium hydroxide, vulcanizing agent, accelerator, modified alta-mud and auxiliary agent are thrown successively
Mixing obtains elastomeric compound 2 times in entering banbury, after standing 24 hours, stirs more than 30 minutes, is well mixed, and roller coating is in the bonding
The surface of agent, stands to surface drying；Carried out in vulcanizing press high temperature vulcanized, obtain final product fluorubber composite metal plate；
Wherein, the high temperature vulcanized technological parameter is：Curing temperature is 180 DEG C, and cure time is 24min.
Embodiment 4
A kind of fluorubber composite metal plate, including metal substrate, the two sides of the metal substrate set fluorine rubber coating, the fluorine
Rubber coating is made up of the raw material of following mass parts：100 parts of fluorubber, 2 parts of magnesia, 3 parts of calcium hydroxide, 3 parts of vulcanizing agent, rush
Enter 3 parts of agent, 30 parts of carbon black, 3 parts of modified alta-mud, 2 parts of auxiliary agent.
Wherein, carbon black is spray carbon black；Modified alta-mud is sodium bentonite；
Vulcanizing agent is penylene BMI between N, N'-；
Accelerator is the composition of benzyl triphenyl phosphonium chloride phosphine and tetramethylthiuram disulfide, and both weight ratios are 6：1；
Auxiliary agent is paraffin oil.
A kind of preparation method of fluorubber composite metal plate, the fluorubber composite metal plate includes metal substrate, described
The two sides of metal substrate sets fluorine rubber coating, comprises the following steps：
Step S1：Metal substrate is eliminated rust and ungrease treatment successively, surface impurity, the Metal Substrate after being processed is removed
Plate, metal substrate two sides after the treatment is respectively coated with adhesive RA；
Step S2：Fluorubber, magnesia, carbon black, calcium hydroxide, vulcanizing agent, accelerator, modified alta-mud and auxiliary agent are thrown successively
Mixing obtains elastomeric compound 3 times in entering banbury, after standing 24 hours, stirs more than 30 minutes, is well mixed, and roller coating is in the bonding
The surface of agent, stands to surface drying；Carried out in vulcanizing press high temperature vulcanized, obtain final product fluorubber composite metal plate；
Wherein, the high temperature vulcanized technological parameter is：Curing temperature is 200 DEG C, and cure time is 18min；
Step S3：Soft graphite powder more than the mesh of surface spraying 800 of the fluorubber composite metal plate.
Step S3 can avoid surface that bonding phenomenon occurs in the method, and greasy property is more preferable.
Embodiment 5
A kind of fluorubber composite metal plate, including metal substrate, the two sides of the metal substrate set fluorine rubber coating, the fluorine
Rubber coating is made up of the raw material of following mass parts：100 parts of fluorubber, 8 parts of magnesia, 8 parts of calcium hydroxide, 8 parts of vulcanizing agent, rush
Enter 4 parts of agent, 35 parts of carbon black, 4 parts of modified alta-mud, 8 parts of auxiliary agent.
Wherein, carbon black is spray carbon black；Modified alta-mud is sodium bentonite；
Vulcanizing agent is the composition of bisphenol AF and urethanes, and both weight ratios are 6：1；
Accelerator is the composition of benzyl triphenyl phosphonium chloride phosphine and tetramethylthiuram disulfide, and both weight ratios are 6：1；
Auxiliary agent is paraffin oil.
Effect assessment
The fluorubber composite metal plate developed of the present invention is compressed rebound performance, creep relaxation performance, medium-resistance,
Sealing property etc. is tested, and test result average value is listed in the table below：
Connect table：
。
To sum up, the compression ratio that the present invention develops fluorubber composite metal plate is 21 ~ 32%, rebound degree ＞ 65%, creep pine
Relaxation rate ＜ 5%, sealing ml/hr≤0.02, oil seal No leakage；5 hours weightening ＜ 2% of the B of resistance to fuel oil room temperatures, thicken ＜ 3%；
150 DEG C of 5h weightening ＜ 3% of resistance to ASTM3 oil, thicken ＜ 2%；100 DEG C × 22h of resistance to anti-icing fluid weightening ＜ 2%, thicken ＜ 3%；It is heat-resisting
120 DEG C × 22h weightenings -2 ~ 2, thicken -2 ~ 2.Excellent rebound degree, creep-resistant property and heatproof oil resistance etc. are shown,
Resultant effect is very prominent.
Finally illustrate, the above embodiments are merely illustrative of the technical solutions of the present invention and it is unrestricted, this area is common
Other modifications or equivalent that technical staff is made to technical scheme, without departing from technical solution of the present invention
Spirit and scope, all should cover in the middle of scope of the presently claimed invention.
Claims (10)
1. a kind of fluorubber composite metal plate, including metal substrate, the two sides of the metal substrate sets fluorine rubber coating, described
Fluorine rubber coating is made up of the raw material of following mass parts：100 parts of fluorubber, 1 ~ 10 part of magnesia, 2 ~ 10 parts of calcium hydroxide, vulcanization
2 ~ 10 parts of agent, 0.5 ~ 5 part of accelerator, 20 ~ 40 parts of carbon black, 1 ~ 5 part of modified alta-mud, 1 ~ 10 part of auxiliary agent.
2. fluorubber composite metal plate as claimed in claim 1, it is characterised in that：The vulcanizing agent is between bisphenol AF, N, N'-
One or more composition in penylene BMI, urethanes.
3. fluorubber composite metal plate as claimed in claim 1, it is characterised in that：The accelerator is benzyl triphenyl phosphonium chloride
One or more composition in phosphine, tetramethylthiuram disulfide, N- cyclohexyls -2-[4-morpholinodithio sulfenamide.
4. fluorubber composite metal plate as claimed in claim 1, it is characterised in that：The carbon black is N990 carbon blacks or spraying charcoal
It is black.
5. fluorubber composite metal plate as claimed in claim 1, it is characterised in that：The modified alta-mud is Na-bentonite
Soil.
6. fluorubber composite metal plate as claimed in claim 1, it is characterised in that：The auxiliary agent be paraffin oil, methyl-silicone oil,
One or more composition in carboxymethyl chitosan.
7. a kind of preparation method of fluorubber composite metal plate, it is characterised in that：The fluorubber composite metal plate includes metal
Substrate, the two sides of the metal substrate sets fluorine rubber coating, comprises the following steps：
Step S1：Metal substrate is eliminated rust and ungrease treatment successively, surface impurity, the Metal Substrate after being processed is removed
Plate, metal substrate two sides after the treatment is respectively coated with adhesive；
Step S2：Fluorubber, magnesia, carbon black, calcium hydroxide, vulcanizing agent, accelerator, modified alta-mud and auxiliary agent are thrown successively
Mixing obtains elastomeric compound 2 ~ 3 times in entering banbury, after standing 20 ~ 24 hours, stirs more than 30 minutes, is well mixed, and roller coating is in institute
The surface of adhesive is stated, is stood to surface drying；Carried out in vulcanizing press high temperature vulcanized, obtain final product fluorubber composite metal plate.
8. a kind of preparation method of fluorubber composite metal plate as claimed in claim 7, it is characterised in that：Described adhesive is
One or more composition in adhesive RA, phenolic resin, silane coupler.
9. a kind of preparation method of fluorubber composite metal plate as claimed in claim 7, it is characterised in that：It is described high temperature vulcanized
Technological parameter be：Curing temperature is 180 ~ 220 DEG C, and cure time is 15 ~ 24min.
10. the preparation method of a kind of fluorubber composite metal plate as described in any one of claim 7 ~ 9, it is characterised in that：Institute
The preparation method of fluorubber composite metal plate is stated, also including step S3：In the surface spraying 800 of the fluorubber composite metal plate
Soft graphite powder more than mesh.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111087650A (en) * | 2019-12-25 | 2020-05-01 | 浙江加诚新材料有限公司 | Vulcanizing agent system for fluororubber, fluororubber compound and application |
| CN112592547A (en) * | 2020-12-16 | 2021-04-02 | 江苏赛尔密封科技股份有限公司 | Anti-aging rubber sealing composite board and preparation method thereof |
| CN114395297A (en) * | 2022-03-05 | 2022-04-26 | 浙江柏德密封科技有限公司 | Sealing gasket coated with fluororubber and production process thereof |
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| CN111087650A (en) * | 2019-12-25 | 2020-05-01 | 浙江加诚新材料有限公司 | Vulcanizing agent system for fluororubber, fluororubber compound and application |
| CN112592547A (en) * | 2020-12-16 | 2021-04-02 | 江苏赛尔密封科技股份有限公司 | Anti-aging rubber sealing composite board and preparation method thereof |
| CN114395297A (en) * | 2022-03-05 | 2022-04-26 | 浙江柏德密封科技有限公司 | Sealing gasket coated with fluororubber and production process thereof |
| CN114395297B (en) * | 2022-03-05 | 2022-09-23 | 浙江柏德密封科技有限公司 | Sealing gasket coated with fluororubber and production process thereof |
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