CN108727918A - Corrosion-resistant finishes, the sealing element and its manufacturing method for being coated with the coating - Google Patents
Corrosion-resistant finishes, the sealing element and its manufacturing method for being coated with the coating Download PDFInfo
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- CN108727918A CN108727918A CN201810626596.4A CN201810626596A CN108727918A CN 108727918 A CN108727918 A CN 108727918A CN 201810626596 A CN201810626596 A CN 201810626596A CN 108727918 A CN108727918 A CN 108727918A
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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
- C09D127/18—Homopolymers or copolymers of tetrafluoroethene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/0427—Coating with only one layer of a composition containing a polymer binder
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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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
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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
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2309/00—Characterised by the use of homopolymers or copolymers of conjugated diene hydrocarbons
- C08J2309/06—Copolymers with styrene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/16—Ethene-propene or ethene-propene-diene copolymers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2427/00—Characterised by the use of 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; Derivatives of such polymers
- C08J2427/02—Characterised by the use of 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; Derivatives of such polymers not modified by chemical after-treatment
- C08J2427/12—Characterised by the use of 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; Derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C08J2427/18—Homopolymers or copolymers of tetrafluoroethylene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2251—Oxides; Hydroxides of metals of chromium
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2289—Oxides; Hydroxides of metals of cobalt
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Abstract
The invention discloses a kind of corrosion-resistant finishes, it is coated with the sealing element and its manufacturing method of the coating, is related to coated article processing technique field, solves the technical issues of existing sealing element cannot take into account high resiliency and corrosion resistance simultaneously.Corrosion-resistant finishes includes following weight percentage components：Polytetrafluoroethylene (PTFE) concentrates dispersion liquid 50-55%；Diethylene glycol (DEG) 1-3%；Butyl acetate 6-8%；Soluble dyes 10-15%；FoamasterIII antifoaming agent 0.5-1.5%；620 levelling agent 0.5-1.5% of Levelling；Deionized water complements to 100%.Corrosion-resistant finishes in the present invention can follow glue elastomer to deform upon together, not influence the elasticity of rubber elastomer, and have good binding force with rubber elastomer；By controlling the thickness of corrosion-resistant finishes, the hardness of sealing element is not influenced；And all kinds of corrosive environments can be born, corrosion resistance is significantly larger than General Purpose Rubber elastomer；While ensureing rubber elastomer high resiliency and highly corrosion resistant, the cost of sealing element is reduced.
Description
Technical field
The present invention relates to coated article processing technique field, more specifically, it relates to a kind of corrosion-resistant finishes, be coated with
The sealing element and its manufacturing method of the coating.
Background technology
Sealing element mostly uses greatly rubber EPDM, rubber NBR, fluorubber, silicon rubber, PTFE (polytetrafluoroethylene (PTFE)) material at present
Matter, wherein rubber EPDM and rubber NBR classes have excellent elasticity, and good seal performance is at low cost, but corrosion resistance is not excellent enough
Show is not suitable for the environment for having compared with strong corrosive medium；Fluorubber, silicone rubber kinds have excellent elasticity and leakproofness, corrosion-resistant
Property is equally excellent, but cost is very high.
It is close that a kind of modified Teflon in low creep is disclosed in the Chinese invention patent of Publication No. CN1687223A
Sealing, composition and mass percent are：Polyflon 50%~90%, remaining is barium sulfate.
Above-mentioned teflon seal has highest corrosion resistance, but surface is bad compared with hard elastics, is not suitable for
The high environment of seal request.Therefore, it is necessary to develop a kind of inexpensive, high resiliency while the sealing element for being resistant to strong corrosive environment.
Invention content
In view of the deficienciess of the prior art, the purpose of the present invention one is to provide a kind of corrosion-resistant finishes, by using
The polytetrafluoroethylene (PTFE) of excellent corrosion resistance is prepared into coating, solves the above problems, with excellent corrosion resistance and caoutchouc elasticity
Body, which combines, has the advantages that excellent adhesive force.
To achieve the above object one, the present invention provides following technical solutions：
A kind of corrosion-resistant finishes, including following weight percentage components：
Polytetrafluoroethylene (PTFE) concentrates dispersion liquid 50-55%；
Diethylene glycol (DEG) 1-3%；
Butyl acetate 6-8%；
Soluble dyes 10-15%；
FoamasterIII antifoaming agent 0.5-1.5%；
Levelling620 levelling agents 0.5-1.5%；
Deionized water complements to 100%.
By using above-mentioned technical proposal, polytetrafluoroethylene (PTFE) by tetrafluoroethene it is aggregated made of high-molecular compound, tool
There are excellent chemical stability, corrosion resistance, sealing property, high lubrication, non-stickiness, electrical insulation and good anti-aging endurance,
Insoluble in strong acid, highly basic and organic solvent.It is configured to be easy the coating of spraying using above-mentioned formula, and is sprayed on rubber
After surface of elastomer, the elasticity of rubber elastomer is not influenced, and there is good binding force with rubber elastomer.
Diethylene glycol (DEG) concentrates the solvent of dispersion liquid as polytetrafluoroethylene (PTFE), and butyl acetate is for dissolving pigment and and other components
It dissolves each other, to form the coating of stable homogeneous.
Wherein, FoamasterIII antifoaming agent is purchased from BASF joint-stock company, and 620 levelling agents of Levelling are purchased from Henkel
Limited liability company.
Further preferably, any one of the soluble dyes in carbon black, cobalt oxide, chromium oxide, titanium dioxide.
By using above-mentioned technical proposal, make coating that there is different colors.
The purpose of the present invention two is to provide a kind of sealing element, the corrosion resistant in the surface spraying purpose one of rubber elastomer
There is excellent corrosion resistance, coating to have good binding force with rubber elastomer for erosion resisting coating, obtained sealing element.
To achieve the above object two, the present invention provides following technical solutions：
A kind of sealing element, the sealing element include rubber elastomer, and the surface spraying of the rubber elastomer is just like in purpose one
The corrosion-resistant finishes, the color of the corrosion-resistant finishes is different from the color of rubber elastomer, the corrosion-resistant finishes
Thickness is 20-30 μm.
By using above-mentioned technical proposal, it is found through experiment that, when corrosion-resistant finishes thickness is less than 20 μm, coating surface shape
Fine and close film is not become, the corrosion resistance of coating is influenced；When corrosion-resistant finishes thickness is more than 30 μm, rubber elastomer can be reduced
Elasticity, therefore, the thickness of corrosion-resistant finishes is preferably 20-30 μm.
The color of corrosion-resistant finishes is different from the color of rubber elastomer, sealing element in use can aging, when close
When abrasion or rupture occur for the corrosion-resistant finishes of seal surface, internal caoutchouc elasticity, which is known from experience, to be exposed, and people is made to be easy hair
It is now abnormal, to be replaced.
Wherein, rubber elastomer is ethylene propylene diene rubber or nitrile rubber.
The purpose of the present invention three is to provide a kind of manufacturing method for the sealing element being coated with corrosion-resistant finishes, using the party
Sealing element low cost, the elastic good, excellent anti-corrosion performance of method manufacture.
To achieve the above object three, the present invention provides following technical solutions：
A kind of manufacturing method for the sealing element being coated with corrosion-resistant finishes, includes the following steps：
Step 1, by polytetrafluoroethylene (PTFE) concentration dispersion liquid be dispersed with stirring uniformly, addition diethylene glycol (DEG), butyl acetate, deionized water, can
Insoluble pigment is mixed evenly, and is slowly added to FoamasterIII antifoaming agent, stirs evenly, is slowly added to Levelling
620 levelling agents, stir evenly, and obtain coating；
Step 2, it is using neutral detergent that the surface clean of rubber elastomer is clean, it degreases and impurity；
The rubber elastomer of washes clean is placed on drying in oven, must have circulated air to ensure in case in baking oven by step 3
Temperature heating uniformity；
Rubber elastomer after drying is cooled to room temperature by step 4, using the gravity type rock field air spray of 0.8-1.0mm bores
Coating of the rifle with 0.3-0.5MPa pressure in the surface spraying step 1 of rubber elastomer forms corrosion-resistant finishes；
The rubber elastomer of sprayed coating is positioned in the baking oven not higher than 100 DEG C, is to slowly warm up to 120-150 by step 5
DEG C, it maintains 20-30 minutes, must have circulated air in baking oven to ensure the temperature inside the box heating uniformity；
Step 6 opens chamber door, makes corrosion-resistant finishes cooled to room temperature, obtain the sealing element for being coated with corrosion-resistant finishes.
By using above-mentioned technical proposal, corrosion-resistant finishes is set to form fine and close film on rubber elastomer surface, even if rubber
Glue elastomer will not be cracked when deforming upon and peels off breakpoint；Corrosion-resistant finishes thickness is thin, does not influence rubber elastomer
Elasticity and hardness, with rubber elastomer have good binding force.
Further preferably, it is 2 that the neutral detergent in the step 2, which includes mass ratio,:1:1:1:15 succinic acid two
Dioctyl sodium sulfosuccinate, sodium sulfate of polyethenoxy ether of fatty alcohol, Brij sodium sulfonate, ethyl alcohol, deionized water.
By using above-mentioned technical proposal, neutral detergent can not only remove the greasy dirt on rubber elastomer surface and miscellaneous
Matter, and rubber elastomer will not be destroyed, avoid the mechanical property for influencing rubber elastomer.
Further preferably, the temperature dried in the step 3 is 100-120 DEG C, and drying time is 10-15 minutes.
By using above-mentioned technical proposal so that rubber elastomer dry tack free is conducive to corrosion-resistant finishes and is attached to it
Surface.
Further preferably, the distance on surface of the spray gun away from rubber elastomer in the step 4 is 300-400mm, is walked
Rifle speed is 0.03-0.04m/s.
By using above-mentioned technical proposal, by control rifle away from enhancement speed, ensure coating layer thickness at 20-30 μm.
Further preferably, the thickness of corrosion-resistant finishes is 20-30 μm in the step 4.
By using above-mentioned technical proposal, when corrosion-resistant finishes thickness is less than 20 μm, coating surface does not become densification
Film influences the corrosion resistance of coating；When corrosion-resistant finishes thickness is more than 30 μm, the elasticity of rubber elastomer can be reduced, therefore,
The thickness of corrosion-resistant finishes is preferably 20-30 μm.
In conclusion compared with prior art, the invention has the advantages that：
(1) present invention is prepared into coating using the polytetrafluoroethylene (PTFE) of excellent corrosion resistance, and after being sprayed on rubber elastomer surface,
Coating can follow glue elastomer to deform upon together, not influence the elasticity of rubber elastomer, and have with rubber elastomer
Good binding force；
(2) by controlling the thickness of corrosion-resistant finishes, the hardness of sealing element is not influenced；
(3) sealing element produced by the present invention can bear all kinds of corrosive environments, and corrosion resistance is significantly larger than General Purpose Rubber elastomer；
(4) while ensureing rubber elastomer high resiliency and highly corrosion resistant, the cost of sealing element is reduced.
Description of the drawings
Fig. 1 is the sectional axonometric drawing of the sealing element in embodiment 6.
Reference numeral：1, rubber elastomer；2, corrosion-resistant finishes.
Specific implementation mode
With reference to the accompanying drawings and examples, the present invention will be described in detail.
Embodiment 1：A kind of corrosion-resistant finishes, each component and its corresponding weight percent are as shown in table 1, soluble dyes
Using cobalt oxide, wherein FoamasterIII antifoaming agent is purchased from BASF joint-stock company, and 620 levelling agents of Levelling are purchased from
Henkel Co., Ltd.
Embodiment 2-5：A kind of corrosion-resistant finishes, difference from example 1 is that, each component and its corresponding weight
Percentage is as shown in table 1.
Wherein, the soluble dyes in embodiment 2 use carbon black, and the soluble dyes in embodiment 3 use chromium oxide, real
The soluble dyes applied in example 4 and 5 are all made of titanium dioxide.
Each component and its weight percent in 1 embodiment 1-5 of table
Embodiment 6：As shown in Figure 1, a kind of sealing element, including circular rubber elastomer 1, rubber elastomer 1 is using white
Nitrile rubber is made, and the surface spraying of rubber elastomer 1 has corrosion-resistant finishes 2 as described in example 1 above, corrosion-resistant finishes 2
Color be blue, the thickness of corrosion-resistant finishes 2 is 20 μm.
Embodiment 7：A kind of sealing element, difference from example 1 is that, the thickness of corrosion-resistant finishes is 25 μm.
Embodiment 8：A kind of sealing element, difference from example 1 is that, the thickness of corrosion-resistant finishes is 30 μm.
Embodiment 9：A kind of sealing element, difference from example 1 is that, rubber elastomer is using white EPDM
Rubber is made.
Embodiment 10：A kind of manufacturing method for the sealing element being coated with corrosion-resistant finishes, the caoutchouc elasticity in the present embodiment
Body is made of white nitrile rubber, and the proportioning of corrosion-resistant finishes is same as Example 1, and manufacturing method includes the following steps：
Step 1, by polytetrafluoroethylene (PTFE) concentration dispersion liquid be dispersed with stirring uniformly, addition diethylene glycol (DEG), butyl acetate, deionized water, can
Insoluble pigment is mixed evenly, and is slowly added to FoamasterIII antifoaming agent, stirs evenly, is slowly added to Levelling
620 levelling agents, stir evenly, and obtain coating；
Step 2, it is using neutral detergent that the surface clean of rubber elastomer is clean, it degreases and impurity, neutral detergent
It is 2 including mass ratio:1:1:1:15 aerosol OT, sodium sulfate of polyethenoxy ether of fatty alcohol, oleyl alcohol polyoxy second
Alkene ether sulfonic acid sodium, ethyl alcohol, deionized water；
The rubber elastomer of washes clean is placed on drying in oven, must have circulated air to ensure in case in baking oven by step 3
The temperature of temperature heating uniformity, drying is 100 DEG C, and drying time is 15 minutes；
Rubber elastomer after drying is cooled to room temperature by step 4, use the gravity type rock field air gun of 0.8mm bores with
Coating of the 0.3MPa pressure in the surface spraying step 1 of rubber elastomer, the distance on surface of the spray gun away from rubber elastomer are
300mm, it is 0.03m/s to walk rifle speed, forms corrosion-resistant finishes, the thickness of corrosion-resistant finishes is 20 μm；
The rubber elastomer of sprayed coating is positioned in the baking oven not higher than 100 DEG C by step 5, is to slowly warm up to 130 DEG C, dimension
It holds 25 minutes, must have circulated air in baking oven to ensure the temperature inside the box heating uniformity；
Step 6 opens chamber door, makes corrosion-resistant finishes cooled to room temperature, obtain the sealing element for being coated with corrosion-resistant finishes.
Embodiment 11：A kind of manufacturing method for the sealing element being coated with corrosion-resistant finishes, the difference with embodiment 10
It is, the temperature dried in step 3 is 120 DEG C, and drying time is 10 minutes.
Embodiment 12：A kind of manufacturing method for the sealing element being coated with corrosion-resistant finishes, the difference with embodiment 10
It is, the temperature dried in step 3 is 110 DEG C, and drying time is 13 minutes.
Embodiment 13：A kind of manufacturing method for the sealing element being coated with corrosion-resistant finishes, the difference with embodiment 10
It is, step 4 specifically includes：Rubber elastomer after drying is cooled to room temperature, using the gravity type rock field of 0.8mm bores
Coating of the air gun with 0.5MPa pressure in the surface spraying step 1 of rubber elastomer, table of the spray gun away from rubber elastomer
The distance in face is 400mm, and it is 0.04m/s to walk rifle speed, forms corrosion-resistant finishes, the thickness of corrosion-resistant finishes is 25 μm.
Embodiment 14：A kind of manufacturing method for the sealing element being coated with corrosion-resistant finishes, the difference with embodiment 10
It is, step 4 specifically includes：Rubber elastomer after drying is cooled to room temperature, using the gravity type rock field of 1.0mm bores
Coating of the air gun with 0.4MPa pressure in the surface spraying step 1 of rubber elastomer, table of the spray gun away from rubber elastomer
The distance in face is 350mm, and it is 0.035m/s to walk rifle speed, forms corrosion-resistant finishes, the thickness of corrosion-resistant finishes is 30 μm.
Embodiment 15：A kind of manufacturing method for the sealing element being coated with corrosion-resistant finishes, the difference with embodiment 10
It is, step 5 specifically includes：The rubber elastomer of sprayed coating is positioned in the baking oven not higher than 100 DEG C, is slowly heated up
It to 120 DEG C, maintains 30 minutes, must have circulated air in baking oven to ensure the temperature inside the box heating uniformity.
Embodiment 16：A kind of manufacturing method for the sealing element being coated with corrosion-resistant finishes, the difference with embodiment 10
It is, step 5 specifically includes：The rubber elastomer of sprayed coating is positioned in the baking oven not higher than 100 DEG C, is slowly heated up
It to 150 DEG C, maintains 20 minutes, must have circulated air in baking oven to ensure the temperature inside the box heating uniformity.
Comparative example 1：A kind of sealing element is made of white nitrile rubber, does not spray corrosion-resistant finishes.
Comparative example 2：A kind of sealing element is made of white ethylene propylene diene rubber, does not spray corrosion-resistant finishes.
Comparative example 3：A kind of sealing element, the difference is that, the thickness of corrosion-resistant finishes is 10 μm with embodiment 6.
Comparative example 4：A kind of sealing element, the difference is that, the thickness of corrosion-resistant finishes is 40 μm with embodiment 6.
Test corrosion resistance test
Test method：Using the sealing element manufactured in the sealing element and embodiment 10-16 obtained in embodiment 6-9 as test sample
Test specimen and control sample are put into 35 DEG C by product simultaneously using the sealing element obtained in comparative example 1-4 sample as a contrast
Soak Test, testing time point are carried out in acetone, toluene, bromine (anhydrous), sodium hydroxide (50%), nitric acid (70%), hydrofluoric acid
Wei not be 7 days, 7 days, 7 days, 5 days, 5 days, 5 days, sample variation situation is observed and recorded after taking-up.
Test result：The corrosion resistance test result of embodiment 6-16 and comparative example 1-4 is as shown in table 2.As shown in Table 2,
Sealing element in embodiment 6-16 does not occur exception under various corrosive environments, and comparative example 1 and 2 is in 6 kinds of corrosive environments
Under there is Swelling, after comparative example 3 sprays 10 μm of corrosion-resistant finishes, volume Magnification is less than comparative example 1 and 2, explanation
After sealing element spraying corrosion-resistant finishes in the application, all kinds of corrosive environments can be born, corrosion resistance is significantly larger than common
The sealing element of corrosion-resistant finishes is not sprayed.
The corrosion resistance test result of table 2 embodiment 6-16 and comparative example 1-4
Test the test of two adhesive force
Test method：
1, basis《The cross cut test of GB/T9286-1998 paint and varnish paint films》Specified in method to embodiment 6-16 and right
Ratio 3-4 carry out test adhesive force grade, 0 grade：Cut edge is completely smooth, none lattice falls off, 1 grade：Have in notch infall
A little coating shedding, but cross-cut area is impacted cannot be significantly greater than 5%.
2, after embodiment 6-16 and comparative example 3-4 being elongated 150%, face coat is observed under the microscope, observes coating
Whether it is cracked and peel off breakpoint.
Test result：The corrosion resistance test result of embodiment 6-16 and comparative example 3-4 is as shown in table 3.As shown in Table 3,
After sealing element in embodiment 6-16 elongates 150%, face coat is observed under the microscope, coating is with rubber elastomer shape
Become, without cracked and peel off breakpoint, comparative example 3 is cracked and peels off breakpoint, the sealing element in embodiment 6-16 it is attached
It is 0 to put forth effort grade, and corrosion-resistant finishes described above has good binding force with rubber elastomer, when corrosion-resistant finishes thickness is low
When 20 μm, cracking is easy when sealing element deformation.
The corrosion resistance test result of table 3 embodiment 6-16 and comparative example 3-4
| Embodiment/comparative example number | Adhesive force grade | Appearance of coat after stretching |
| Embodiment 6 | 0 | Not cracked and peeling breakpoint |
| Embodiment 7 | 0 | Not cracked and peeling breakpoint |
| Embodiment 8 | 0 | Not cracked and peeling breakpoint |
| Embodiment 9 | 0 | Not cracked and peeling breakpoint |
| Embodiment 10 | 0 | Not cracked and peeling breakpoint |
| Embodiment 11 | 0 | Not cracked and peeling breakpoint |
| Embodiment 12 | 0 | Not cracked and peeling breakpoint |
| Embodiment 13 | 0 | Not cracked and peeling breakpoint |
| Embodiment 14 | 0 | Not cracked and peeling breakpoint |
| Embodiment 15 | 0 | Not cracked and peeling breakpoint |
| Embodiment 16 | 0 | Not cracked and peeling breakpoint |
| Comparative example 3 | 1 | Cracked and peeling breakpoint |
| Comparative example 4 | 1 | Not cracked and peeling breakpoint |
Test three hardness tests
Test method：Hardness inspection is carried out to the surface of the sealing element in embodiment 6-16 and comparative example 1-4 using Shore A durometer
It surveys.
Test result：The hardness test result of embodiment 6-16 and comparative example 1-4 are as shown in table 4, as shown in Table 4, implement
The hardness of example 6-8,10-16 there is no that variation, the hardness of embodiment 9 are not sent out compared with comparative example 2 compared with comparative example 1
Changing, illustrating the corrosion-resistant finishes in the application not influences the hardness of sealing element, by the hardness of embodiment 6 and comparative example 1, right
Ratio 3 is compared with 4, when corrosion-resistant finishes thickness is more than 30 μm, can be increased the hardness of sealing element, be reduced the elasticity of sealing element.
The hardness test result of table 4 embodiment 6-16 and comparative example 1-4
| Embodiment/comparative example number | Shore hardness/HA |
| Embodiment 6 | 65 |
| Embodiment 7 | 66 |
| Embodiment 8 | 67 |
| Embodiment 9 | 55 |
| Embodiment 10 | 64 |
| Embodiment 11 | 67 |
| Embodiment 12 | 66 |
| Embodiment 13 | 66 |
| Embodiment 14 | 67 |
| Embodiment 15 | 66 |
| Embodiment 16 | 66 |
| Comparative example 1 | 65 |
| Comparative example 2 | 55 |
| Comparative example 3 | 63 |
| Comparative example 4 | 74 |
The above is only a preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-described embodiment,
All technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art
For those of ordinary skill, several improvements and modifications without departing from the principles of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (8)
1. a kind of corrosion-resistant finishes, which is characterized in that including following weight percentage components：
Polytetrafluoroethylene (PTFE) concentrates dispersion liquid 50-55%；
Diethylene glycol (DEG) 1-3%；
Butyl acetate 6-8%；
Soluble dyes 10-15%；
FoamasterIII antifoaming agent 0.5-1.5%；
620 levelling agent 0.5-1.5% of Levelling；
Deionized water complements to 100%.
2. corrosion-resistant finishes according to claim 1, which is characterized in that the soluble dyes be selected from carbon black, cobalt oxide,
Any one in chromium oxide, titanium dioxide.
3. a kind of sealing element, which is characterized in that the sealing element includes rubber elastomer（1）, the rubber elastomer（1）Table
Face is coated with corrosion-resistant finishes as described in claim 1（2）, the corrosion-resistant finishes（2）Color and rubber elastomer（1）
Color it is different, the corrosion-resistant finishes（2）Thickness be 20-30 μm.
4. a kind of manufacturing method for the sealing element being coated with corrosion-resistant finishes, which is characterized in that include the following steps：
Step 1, by polytetrafluoroethylene (PTFE) concentration dispersion liquid be dispersed with stirring uniformly, addition diethylene glycol (DEG), butyl acetate, deionized water, can
Insoluble pigment is mixed evenly, and is slowly added to FoamasterIII antifoaming agent, stirs evenly, is slowly added to Levelling
620 levelling agents, stir evenly, and obtain coating；
Step 2, it is using neutral detergent that the surface clean of rubber elastomer is clean, it degreases and impurity；
The rubber elastomer of washes clean is placed on drying in oven, must have circulated air to ensure in case in baking oven by step 3
Temperature heating uniformity；
Rubber elastomer after drying is cooled to room temperature by step 4, using the gravity type rock field air spray of 0.8-1.0mm bores
Coating of the rifle with 0.3-0.5MPa pressure in the surface spraying step 1 of rubber elastomer forms corrosion-resistant finishes；
The rubber elastomer of sprayed coating is positioned in the baking oven not higher than 100 DEG C, is to slowly warm up to 120-150 by step 5
DEG C, it maintains 20-30 minutes, must have circulated air in baking oven to ensure the temperature inside the box heating uniformity；
Step 6 opens chamber door, makes corrosion-resistant finishes cooled to room temperature, obtain the sealing element for being coated with corrosion-resistant finishes.
5. the manufacturing method of the sealing element according to claim 4 for being coated with corrosion-resistant finishes, which is characterized in that the step
Neutral detergent in rapid two includes that mass ratio is 2:1:1:1:15 aerosol OT, fatty alcohol polyoxyethylene ether
Sodium sulphate, Brij sodium sulfonate, ethyl alcohol, deionized water.
6. the manufacturing method of the sealing element according to claim 4 for being coated with corrosion-resistant finishes, which is characterized in that the step
The temperature dried in rapid three is 100-120 DEG C, and drying time is 10-15 minutes.
7. the manufacturing method of the sealing element according to claim 4 for being coated with corrosion-resistant finishes, which is characterized in that the step
The distance on surface of the spray gun away from rubber elastomer in rapid four is 300-400mm, and it is 0.03-0.04m/s to walk rifle speed.
8. the manufacturing method of the sealing element according to claim 4 for being coated with corrosion-resistant finishes, which is characterized in that the step
The thickness of corrosion-resistant finishes is 20-30 μm in rapid four.
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| CN109735052A (en) * | 2019-01-12 | 2019-05-10 | 厦门家和兴钻石工具有限公司 | A kind of diamond resin grinding material and preparation method thereof |
| CN110903715A (en) * | 2019-12-04 | 2020-03-24 | 齐耐润工业设备（上海）有限公司 | Protective coating for sealing element and preparation method thereof |
| CN115895355A (en) * | 2021-09-30 | 2023-04-04 | 中集安瑞环科技股份有限公司 | Tank container and tank body thereof and preparation process of tank body |
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Application publication date: 20181102 |