CN109957270A - A kind of aluminum alloy surface high-performance coating - Google Patents
A kind of aluminum alloy surface high-performance coating Download PDFInfo
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- CN109957270A CN109957270A CN201910268697.3A CN201910268697A CN109957270A CN 109957270 A CN109957270 A CN 109957270A CN 201910268697 A CN201910268697 A CN 201910268697A CN 109957270 A CN109957270 A CN 109957270A
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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
- C09D4/00—Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16
- C09D4/06—Organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond in combination with a macromolecular compound other than an unsaturated polymer of groups C09D159/00 - C09D187/00
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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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/16—Antifouling paints; Underwater paints
- C09D5/1656—Antifouling paints; Underwater paints characterised by the film-forming substance
- C09D5/1662—Synthetic film-forming substance
- C09D5/1668—Vinyl-type polymers
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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
- C09D5/16—Antifouling paints; Underwater paints
- C09D5/1687—Use of special additives
Abstract
The invention discloses a kind of aluminum alloy surface high-performance coatings, are made of following component: polyacrylate dispersion, dimethylethanolamine, isopropanol, 2- hydroxyethyl methacrylate phosphate, modified Nano diatomite, coupling agent, high-performance carbon fibre, three oxidation of nanometer, fluorocarbon resin, levelling agent;Coating prepared by the present invention effectively can prevent corrosive medium from contacting with aluminum alloy surface by the shielding action of the fine and close surface covering of formation, shield the circulation of the corrosion factors such as water, oxygen, ion, coating has separated the access of corrosion cell, resistance is increased, to play good anti-corrosion effect to aluminium alloy.
Description
Technical field
The invention belongs to field of aluminum alloys, and in particular to a kind of aluminum alloy surface high-performance coating.
Background technique
The density of aluminium alloy is lower, corrosion resistance and good, specific strength is high, is easily worked molding, so that Al-alloy products exist
Marine environment and aviation field are widely used, and in normal atmospheric corrosive environment, aluminum alloy surface is capable of forming densification
Oxide film and there is preferable corrosion resistance, but under coastal and inland hygrothermal environment, due to containing chlorine in environment
The unwanted corrosions medium such as compound, sulfide, aluminium alloy structure has very strong corrosion susceptibility, and compared with other materials, aluminium is closed
The etching problem of golden material is especially prominent, and in marine environment, aluminium alloy is easy to that pitting corrosion occurs, mainly due to aluminium alloy
The regional area on surface will receive the corrosion function of chloride ion, and the passivating film of aluminum alloy surface densification ruptures, and occur inside
The aperture of portion's development, and other parts corrosion is more slight, therefore, how preferably to protect aluminium alloy is required just solution
Technical problem, existing coating are general to aluminum alloy surface coating processing corrosion resistance, while containing a large amount of micro- in seawater
Biology can corrode decomposition coating, coating life is caused to be greatly shortened, be unable to satisfy the market demand.
Summary of the invention
The purpose of the present invention is being directed to existing problem, a kind of aluminum alloy surface high-performance coating is provided.
The present invention is achieved by the following technical solutions:
A kind of aluminum alloy surface high-performance coating, is made of following component by weight: polyacrylate dispersion 80-90,
Dimethylethanolamine 5-8, isopropanol 15-20,2- hydroxyethyl methacrylate phosphate 6-8, modified Nano diatomite 16-
20, coupling agent 1-3, high-performance carbon fibre 8-12, nano-sized molybdenum oxide 2-3, fluorocarbon resin 16-24, levelling agent 1.2-1.5;
The modified Nano diatomite the preparation method comprises the following steps:
Deionized water is added into reaction kettle, then the evenly dispersed nano diatomite into deionized water again, be configured to quality point
Then the nano diatomite dispersion liquid that number is 22.8% adds nano diatomite quality 1.5% into nano diatomite dispersion liquid
2- dredges the CopCS catalyst of base benzothiazole, 0.12%, stirs 30min with 1200r/min revolving speed, then adds a nanometer diatom again
The tert-butylamine of soil property amount 1.2% is heated to 65 DEG C, is passed through oxygen, so that reacting kettle inner pressure is 0.42MPa, then holding 3 is small
When, then be reduced to room temperature, filter, washing, drying to constant weight to get.
Further, the high-performance carbon fibre preparation method the following steps are included:
(1) pre-treatment of carbon fiber: after evenly mixing by polyborosiloxane, xylene soluble coal tar pitch, carbon fiber, it is added to toluene
In, it is then then added in reaction kettle, is passed through helium, air in reaction kettle is discharged, is stirred to react at 210-215 DEG C 5 hours,
Then cooled to room temperature filters, and washing, drying to constant weight, obtains pretreatment carbon fiber;
(2) phosphoric acid is handled: treated pretreatment carbon fiber being dipped into phosphoric acid solution, the ultrasonication at 55 DEG C
Then 35min stands 1 hour naturally, then refilters, wash, and drying to constant weight, obtains phosphorylation pretreatment carbon fiber;
(3) phosphorylation obtained above pretreatment carbon fiber in-situ modified processing: is dipped into ethyl alcohol, ammonium hydroxide, deionized water
In mixed solution, under 42 DEG C of bath temperature, 40min is stirred with 200r/min revolving speed, ethyl orthosilicate is then slowly added dropwise again,
Then 55 DEG C are adjusted the temperature to, with 500r/min revolving speed stirring 5 hours, is then filtered, washs, drying to constant weight, i.e., again
?.
Further, the xylene soluble coal tar pitch obtains coal drip the preparation method comprises the following steps: pitch powder is broken to 1200 mesh
Then coal tar pitch powder is added in dimethylbenzene by green powder, be heated to 60 DEG C, then adds the two of coal tar pitch powder quality 1.2%
Dibutyl tin laurate stirs 40min with 1200r/min revolving speed, is then allowed to stand 1 hour, filters, take filtrate, by filtrate again 132
It is evaporated under reduced pressure 5 hours at DEG C, removes removal xylene, obtain solid xylene soluble coal tar pitch.
Further, the poly- roc siloxanes, xylene soluble coal tar pitch, carbon fiber, toluene mixing mass ratio are 3:5:
18:32。
Further, the phosphoric acid solution concentration is 0.38mol/L.
Further, the ultrasonic frequency is 40kHz, power 850W.
Further, phosphorylation pretreatment carbon fiber be dipped into ethyl alcohol, ammonium hydroxide, deionized water mixed solution in,
It is 115g:65ml:80ml:300ml that phosphorylation, which pre-processes carbon fiber, ethyl alcohol, ammonium hydroxide, deionized water mixed proportion,.
Further, the coupling agent is organo silane coupling agent.
Further, the levelling agent is silicone oil.
The utility model has the advantages that coating prepared by the present invention can be effective by the shielding action of the fine and close surface covering of formation
It prevents corrosive medium from contacting with aluminum alloy surface, shields the circulation of the corrosion factors such as water, oxygen, ion, coating has separated corrosion
The access of battery, increases resistance, to play good anti-corrosion effect, the high-performance that the present invention passes through preparation to aluminium alloy
The synergistic effect of fiber and fluorocarbon resin, the tension variation induction coating that can effectively prevent coating from generating because day alternates with night lose
Effect the phenomenon that cracking, by the synergistic effect of 2- hydroxyethyl methacrylate phosphate and modified Nano diatomite,
The ageing-resistant performance of coating can be improved to a certain extent, reduced coating and promoted because light aging generates the small molecule structures such as ketone, alcohol, acid
The development for making ager process can effectively improve the chemical stability of coating by the synergistic effect of each ingredient, inhibit ocean
The electrolyte such as middle hydrone through under coating porosity and stress can endosmosis, cause coating and aluminium alloy matrix surface it
Between adhesive force reduce phenomenon, micro- surface biological participates in biological corrosion and degradation form greatly in ocean, largely
Microorganism attachment forms one layer of mycoderm on the surface of the material, and further forms miniature organism mucous membrane, this biological mucosa pollution
The corrosion process of coating surface is not only influenced, while also largely affecting the service performance of aluminium alloy equipment, this hair
The film coated surface contact angle with higher that the high-performance coating of bright preparation is formed, hydrophobic performance is excellent, can preferably prevent
Marine pollutant attachment, inhibits the formation of biological mucosa, reaches good anti-fouling effect, while also avoiding coating by biological rotten
Erosion, meanwhile, after long-time is impregnated, film coated surface contact angle reduction amplitude is smaller, can keep preferably dredging for a long time
Aqueous energy.
Specific embodiment
Embodiment 1
A kind of aluminum alloy surface high-performance coating, is made of following component by weight: polyacrylate dispersion 80, diformazan
Ethylethanolamine 5, isopropanol 15,2- hydroxyethyl methacrylate phosphate 6, modified Nano diatomite 16, coupling agent 1, height
Performance carbon fiber 8, nano-sized molybdenum oxide 2, fluorocarbon resin 16, levelling agent 1.2;
The modified Nano diatomite the preparation method comprises the following steps:
Deionized water is added into reaction kettle, then the evenly dispersed nano diatomite into deionized water again, be configured to quality point
Then the nano diatomite dispersion liquid that number is 22.8% adds nano diatomite quality 1.5% into nano diatomite dispersion liquid
2- dredges the CopCS catalyst of base benzothiazole, 0.12%, stirs 30min with 1200r/min revolving speed, then adds a nanometer diatom again
The tert-butylamine of soil property amount 1.2% is heated to 65 DEG C, is passed through oxygen, so that reacting kettle inner pressure is 0.42MPa, then holding 3 is small
When, then be reduced to room temperature, filter, washing, drying to constant weight to get.
Further, the high-performance carbon fibre preparation method the following steps are included:
(1) pre-treatment of carbon fiber: after evenly mixing by polyborosiloxane, xylene soluble coal tar pitch, carbon fiber, it is added to toluene
In, it is then then added in reaction kettle, is passed through helium, air in reaction kettle is discharged, be stirred to react 5 hours at 210 DEG C, then
Cooled to room temperature filters, and washing, drying to constant weight, obtains pretreatment carbon fiber;
(2) phosphoric acid is handled: treated pretreatment carbon fiber being dipped into phosphoric acid solution, the ultrasonication at 55 DEG C
Then 35min stands 1 hour naturally, then refilters, wash, and drying to constant weight, obtains phosphorylation pretreatment carbon fiber;
(3) phosphorylation obtained above pretreatment carbon fiber in-situ modified processing: is dipped into ethyl alcohol, ammonium hydroxide, deionized water
In mixed solution, under 42 DEG C of bath temperature, 40min is stirred with 200r/min revolving speed, ethyl orthosilicate is then slowly added dropwise again,
Then 55 DEG C are adjusted the temperature to, with 500r/min revolving speed stirring 5 hours, is then filtered, washs, drying to constant weight, i.e., again
?.
Further, the xylene soluble coal tar pitch obtains coal drip the preparation method comprises the following steps: pitch powder is broken to 1200 mesh
Then coal tar pitch powder is added in dimethylbenzene by green powder, be heated to 60 DEG C, then adds the two of coal tar pitch powder quality 1.2%
Dibutyl tin laurate stirs 40min with 1200r/min revolving speed, is then allowed to stand 1 hour, filters, take filtrate, by filtrate again 132
It is evaporated under reduced pressure 5 hours at DEG C, removes removal xylene, obtain solid xylene soluble coal tar pitch.
Further, the poly- roc siloxanes, xylene soluble coal tar pitch, carbon fiber, toluene mixing mass ratio are 3:5:
18:32。
Further, the phosphoric acid solution concentration is 0.38mol/L.
Further, the ultrasonic frequency is 40kHz, power 850W.
Further, phosphorylation pretreatment carbon fiber be dipped into ethyl alcohol, ammonium hydroxide, deionized water mixed solution in,
It is 115g:65ml:80ml:300ml that phosphorylation, which pre-processes carbon fiber, ethyl alcohol, ammonium hydroxide, deionized water mixed proportion,.
Further, the coupling agent is organo silane coupling agent.
Further, the levelling agent is silicone oil.
Embodiment 2
A kind of aluminum alloy surface high-performance coating, is made of following component by weight: polyacrylate dispersion 90, diformazan
Ethylethanolamine 8, isopropanol 20,2- hydroxyethyl methacrylate phosphate 8, modified Nano diatomite 20, coupling agent 3, height
Performance carbon fiber 12, nano-sized molybdenum oxide 3, fluorocarbon resin 24, levelling agent 1.5;
The modified Nano diatomite the preparation method comprises the following steps:
Deionized water is added into reaction kettle, then the evenly dispersed nano diatomite into deionized water again, be configured to quality point
Then the nano diatomite dispersion liquid that number is 22.8% adds nano diatomite quality 1.5% into nano diatomite dispersion liquid
2- dredges the CopCS catalyst of base benzothiazole, 0.12%, stirs 30min with 1200r/min revolving speed, then adds a nanometer diatom again
The tert-butylamine of soil property amount 1.2% is heated to 65 DEG C, is passed through oxygen, so that reacting kettle inner pressure is 0.42MPa, then holding 3 is small
When, then be reduced to room temperature, filter, washing, drying to constant weight to get.
Further, the high-performance carbon fibre preparation method the following steps are included:
(1) pre-treatment of carbon fiber: after evenly mixing by polyborosiloxane, xylene soluble coal tar pitch, carbon fiber, it is added to toluene
In, it is then then added in reaction kettle, is passed through helium, air in reaction kettle is discharged, be stirred to react 5 hours at 215 DEG C, then
Cooled to room temperature filters, and washing, drying to constant weight, obtains pretreatment carbon fiber;
(2) phosphoric acid is handled: treated pretreatment carbon fiber being dipped into phosphoric acid solution, the ultrasonication at 55 DEG C
Then 35min stands 1 hour naturally, then refilters, wash, and drying to constant weight, obtains phosphorylation pretreatment carbon fiber;
(3) phosphorylation obtained above pretreatment carbon fiber in-situ modified processing: is dipped into ethyl alcohol, ammonium hydroxide, deionized water
In mixed solution, under 42 DEG C of bath temperature, 40min is stirred with 200r/min revolving speed, ethyl orthosilicate is then slowly added dropwise again,
Then 55 DEG C are adjusted the temperature to, with 500r/min revolving speed stirring 5 hours, is then filtered, washs, drying to constant weight, i.e., again
?.
Further, the xylene soluble coal tar pitch obtains coal drip the preparation method comprises the following steps: pitch powder is broken to 1200 mesh
Then coal tar pitch powder is added in dimethylbenzene by green powder, be heated to 60 DEG C, then adds the two of coal tar pitch powder quality 1.2%
Dibutyl tin laurate stirs 40min with 1200r/min revolving speed, is then allowed to stand 1 hour, filters, take filtrate, by filtrate again 132
It is evaporated under reduced pressure 5 hours at DEG C, removes removal xylene, obtain solid xylene soluble coal tar pitch.
Further, the poly- roc siloxanes, xylene soluble coal tar pitch, carbon fiber, toluene mixing mass ratio are 3:5:
18:32。
Further, the phosphoric acid solution concentration is 0.38mol/L.
Further, the ultrasonic frequency is 40kHz, power 850W.
Further, phosphorylation pretreatment carbon fiber be dipped into ethyl alcohol, ammonium hydroxide, deionized water mixed solution in,
It is 115g:65ml:80ml:300ml that phosphorylation, which pre-processes carbon fiber, ethyl alcohol, ammonium hydroxide, deionized water mixed proportion,.
Further, the coupling agent is organo silane coupling agent.
Further, the levelling agent is silicone oil.
Embodiment 3
A kind of aluminum alloy surface high-performance coating, is made of following component by weight: polyacrylate dispersion 82, diformazan
Ethylethanolamine 6, isopropanol 18,2- hydroxyethyl methacrylate phosphate 7, modified Nano diatomite 18, coupling agent 2, height
Performance carbon fiber 10, nano-sized molybdenum oxide 2.5, fluorocarbon resin 19, levelling agent 1.3;
The modified Nano diatomite the preparation method comprises the following steps:
Deionized water is added into reaction kettle, then the evenly dispersed nano diatomite into deionized water again, be configured to quality point
Then the nano diatomite dispersion liquid that number is 22.8% adds nano diatomite quality 1.5% into nano diatomite dispersion liquid
2- dredges the CopCS catalyst of base benzothiazole, 0.12%, stirs 30min with 1200r/min revolving speed, then adds a nanometer diatom again
The tert-butylamine of soil property amount 1.2% is heated to 65 DEG C, is passed through oxygen, so that reacting kettle inner pressure is 0.42MPa, then holding 3 is small
When, then be reduced to room temperature, filter, washing, drying to constant weight to get.
Further, the high-performance carbon fibre preparation method the following steps are included:
(1) pre-treatment of carbon fiber: after evenly mixing by polyborosiloxane, xylene soluble coal tar pitch, carbon fiber, it is added to toluene
In, it is then then added in reaction kettle, is passed through helium, air in reaction kettle is discharged, be stirred to react 5 hours at 212 DEG C, then
Cooled to room temperature filters, and washing, drying to constant weight, obtains pretreatment carbon fiber;
(2) phosphoric acid is handled: treated pretreatment carbon fiber being dipped into phosphoric acid solution, the ultrasonication at 55 DEG C
Then 35min stands 1 hour naturally, then refilters, wash, and drying to constant weight, obtains phosphorylation pretreatment carbon fiber;
(3) phosphorylation obtained above pretreatment carbon fiber in-situ modified processing: is dipped into ethyl alcohol, ammonium hydroxide, deionized water
In mixed solution, under 42 DEG C of bath temperature, 40min is stirred with 200r/min revolving speed, ethyl orthosilicate is then slowly added dropwise again,
Then 55 DEG C are adjusted the temperature to, with 500r/min revolving speed stirring 5 hours, is then filtered, washs, drying to constant weight, i.e., again
?.
Further, the xylene soluble coal tar pitch obtains coal drip the preparation method comprises the following steps: pitch powder is broken to 1200 mesh
Then coal tar pitch powder is added in dimethylbenzene by green powder, be heated to 60 DEG C, then adds the two of coal tar pitch powder quality 1.2%
Dibutyl tin laurate stirs 40min with 1200r/min revolving speed, is then allowed to stand 1 hour, filters, take filtrate, by filtrate again 132
It is evaporated under reduced pressure 5 hours at DEG C, removes removal xylene, obtain solid xylene soluble coal tar pitch.
Further, the poly- roc siloxanes, xylene soluble coal tar pitch, carbon fiber, toluene mixing mass ratio are 3:5:
18:32。
Further, the phosphoric acid solution concentration is 0.38mol/L.
Further, the ultrasonic frequency is 40kHz, power 850W.
Further, phosphorylation pretreatment carbon fiber be dipped into ethyl alcohol, ammonium hydroxide, deionized water mixed solution in,
It is 115g:65ml:80ml:300ml that phosphorylation, which pre-processes carbon fiber, ethyl alcohol, ammonium hydroxide, deionized water mixed proportion,.
Further, the coupling agent is organo silane coupling agent.
Further, the levelling agent is silicone oil.
Comparative example 1: it is only that with the difference of embodiment 1 and does not add modified Nano diatomite.
Comparative example 2: it is only that with the difference of embodiment 1 and modified Nano diatomite is replaced with into the preparation of CN107175081A method
Modification infusorial earth.
Comparative example 3: it is only that with the difference of embodiment 1 and does not add high-performance carbon fibre.
Comparative example 4: it is distinguished with embodiment 1 and is only that the carbon fiber that high-performance carbon fibre is replaced with to unmodified processing.
Embodiment and comparative example coating are coated on glass slide at room temperature, formed a film naturally under natural conditions, film thickness
Difference is no more than 0.15 μm;
Dynamic water contact angle measurement
Sample glass slide is soaked in natural sea-water, sets soaking time to 35 days, takes out sample with after impregnating before impregnating
Contact angle is measured, selects to measure contact angle at 6 flat and smooth films respectively, finally calculates average value, compare each group film
Contact angle,
Table 1
As can be seen from Table 1, the film coated surface contact angle with higher that high-performance coating prepared by the present invention is formed, hydrophobicity
Can be excellent, preferably it can prevent marine pollutant from adhering to, meanwhile, after long-time is impregnated, film coated surface contact angle drops
Low amplitude is smaller, can keep preferable hydrophobic performance for a long time.
Neutral salt spray test: GB 10125-1997;
Table 2
As can be seen from Table 2, high-performance coating prepared by the present invention has excellent Salt Corrosion.
Claims (9)
1. a kind of aluminum alloy surface high-performance coating, which is characterized in that be made by weight of following component: polyacrylic acid
Ester lotion 80-90, dimethylethanolamine 5-8, isopropanol 15-20,2- hydroxyethyl methacrylate phosphate 6-8, modification
Nano diatomite 16-20, coupling agent 1-3, high-performance carbon fibre 8-12, nano-sized molybdenum oxide 2-3, fluorocarbon resin 16-24, levelling
Agent 1.2-1.5;
The modified Nano diatomite the preparation method comprises the following steps:
Deionized water is added into reaction kettle, then the evenly dispersed nano diatomite into deionized water again, be configured to quality point
Then the nano diatomite dispersion liquid that number is 22.8% adds nano diatomite quality 1.5% into nano diatomite dispersion liquid
2- dredges the CopCS catalyst of base benzothiazole, 0.12%, stirs 30min with 1200r/min revolving speed, then adds a nanometer diatom again
The tert-butylamine of soil property amount 1.2% is heated to 65 DEG C, is passed through oxygen, so that reacting kettle inner pressure is 0.42MPa, then holding 3 is small
When, then be reduced to room temperature, filter, washing, drying to constant weight to get.
2. a kind of aluminum alloy surface high-performance coating according to claim 1, which is characterized in that the high-performance carbon fiber
Tie up preparation method the following steps are included:
(1) pre-treatment of carbon fiber: after evenly mixing by polyborosiloxane, xylene soluble coal tar pitch, carbon fiber, it is added to toluene
In, it is then then added in reaction kettle, is passed through helium, air in reaction kettle is discharged, is stirred to react at 210-215 DEG C 5 hours,
Then cooled to room temperature filters, and washing, drying to constant weight, obtains pretreatment carbon fiber;
(2) phosphoric acid is handled: treated pretreatment carbon fiber being dipped into phosphoric acid solution, the ultrasonication at 55 DEG C
Then 35min stands 1 hour naturally, then refilters, wash, and drying to constant weight, obtains phosphorylation pretreatment carbon fiber;
(3) phosphorylation obtained above pretreatment carbon fiber in-situ modified processing: is dipped into ethyl alcohol, ammonium hydroxide, deionized water
In mixed solution, under 42 DEG C of bath temperature, 40min is stirred with 200r/min revolving speed, ethyl orthosilicate is then slowly added dropwise again,
Then 55 DEG C are adjusted the temperature to, with 500r/min revolving speed stirring 5 hours, is then filtered, washs, drying to constant weight, i.e., again
?.
3. a kind of aluminum alloy surface high-performance coating according to claim 2, which is characterized in that the xylene soluble
Coal tar pitch obtains coal tar pitch powder, coal tar pitch powder is then added to two the preparation method comprises the following steps: pitch powder is broken to 1200 mesh
In toluene, 60 DEG C are heated to, then adds the dibutyl tin dilaurate of coal tar pitch powder quality 1.2%, with 1200r/min revolving speed
40min is stirred, is then allowed to stand 1 hour, is filtered, is taken filtrate, will be evaporated under reduced pressure 5 hours at filtrate again 132 DEG C, removal xylene is removed,
Obtain solid xylene soluble coal tar pitch.
4. a kind of aluminum alloy surface high-performance coating according to claim 2, which is characterized in that the poly- roc silicon oxygen
Alkane, dimethylbenzene can bitumen, carbon fiber, toluene mixing mass ratio be 3:5:18:32.
5. a kind of aluminum alloy surface high-performance coating according to claim 2, which is characterized in that the phosphoric acid solution is dense
Degree is 0.38mol/L.
6. a kind of aluminum alloy surface high-performance coating according to claim 2, which is characterized in that the ultrasonic frequency
For 40kHz, power 850W.
7. a kind of aluminum alloy surface high-performance coating according to claim 2, which is characterized in that the phosphorylation is located in advance
Reason carbon fiber be dipped into ethyl alcohol, ammonium hydroxide, deionized water mixed solution in, phosphorylation pretreatment carbon fiber, ethyl alcohol, ammonium hydroxide, go
Ionized water mixed proportion is 115g:65ml:80ml:300ml.
8. a kind of aluminum alloy surface high-performance coating according to claim 1, which is characterized in that the coupling agent is to have
Machine silane coupling agent.
9. a kind of aluminum alloy surface high-performance coating according to claim 1, which is characterized in that the levelling agent is silicon
Oil.
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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CN111234700A (en) * | 2020-03-01 | 2020-06-05 | 湖北三宁碳磷基新材料产业技术研究院有限公司 | Coating prepared by utilizing byproducts in coal tar pitch-based carbon material production and method |
CN115895441A (en) * | 2022-11-16 | 2023-04-04 | 南通源创工程有限公司 | Electrostatic spraying coating for glove mold and preparation method thereof |
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