CN106318197B - Improved heat-resisting, corrosion resistant hot melt penetrates coating and preparation method thereof - Google Patents
Improved heat-resisting, corrosion resistant hot melt penetrates coating and preparation method thereof Download PDFInfo
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- CN106318197B CN106318197B CN201610715568.0A CN201610715568A CN106318197B CN 106318197 B CN106318197 B CN 106318197B CN 201610715568 A CN201610715568 A CN 201610715568A CN 106318197 B CN106318197 B CN 106318197B
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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
- C09D179/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen, with or without oxygen, or carbon only, not provided for in groups C09D161/00 - C09D177/00
- C09D179/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
- C09D179/08—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
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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
- C09D5/10—Anti-corrosive paints containing metal dust
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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
- C09D5/10—Anti-corrosive paints containing metal dust
- C09D5/103—Anti-corrosive paints containing metal dust containing Al
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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
- C09D5/18—Fireproof paints including high temperature resistant paints
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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
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- 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
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
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Abstract
The present invention provides a kind of improved heat-resisting, corrosion resistant hot melts to penetrate coating, in parts by mass, including following component: 15-20 parts of polyamide-imide resin, 5-10 parts of polyethersulfone resin, 20-30 parts of ketones solvent, 15-20 parts of viscosity modifier, 15-25 parts of aluminum paste, 0.5-1.5 parts of triethylamine, 3-6 parts of nano aluminium oxide, 1-3 parts of inorganic filler, 0.5-1.5 parts of levelling agent.Accordingly, the present invention also provides the preparation methods of the coating, the product of acquisition has excellent combination property, with preferable hardness, rub resistance, good flexibility, shock resistance and heat resistance, replace hot melt to penetrate aluminium layer as new protective coating, can satisfy the corrosion requirements such as salt air corrosion, water, the greasy dirt in cooker use process, and there is excellent adhesive force between iron cooker.
Description
Technical field
The present invention relates to the protection of the heat-and corrosion-resistant on iron cooker surface, in particular to a kind of improved heat-and corrosion-resistant
Hot melt penetrates coating, has excellent heat-resisting, corrosion resistance, correspondingly, the present invention also provides the preparation methods of the coating.
Background technique
The type electromagnetic induction products of cooker industry often penetrate layer with irony hot melt, as magnetic conduction, thermal conductive material layer, but due to list
Matter iron chemical property is active, and exposure gets rusty easily in air, and the flexibility of pure iron itself is poor, easily scratch electromagnetic oven.
In order to overcome this defect, those skilled in the art usually after irony hot melt penetrates layer, need to continue to heat on it and penetrate certain thickness
The aluminium layer of degree, to achieve the effect that antirust and reduce to scratch electromagnetic oven.
Since the chemical property of aluminium powder itself is active, in the production process that its hot melt is penetrated, when aluminium powder contains in local space
When amount reaches a certain concentration, it inflammable can catch fire and even explode, there are great security risks.For this problem, one is solved
Method be to penetrate the process of aluminium layer to hot melt to improve, take means or measure to reduce the space of aluminium powder in production process
Concentration avoids that accident occurs.However this method still has greater risk, may due to the not in place of monitoring management measure and
Lead to the generation of safety accident.Another solution is to develop a kind of protective coating that hot melt can be replaced to penetrate aluminium layer, from basic
On prevent the security risk.
Summary of the invention
For this problem, the invention proposes a kind of improved heat-resisting, corrosion resistant hot melts to penetrate coating, comprehensive
Can be excellent, there is preferable hardness, rub resistance, good flexibility, shock resistance and heat resistance can replace hot melt
Aluminium layer is penetrated as new protective coating, meets the corrosion requirements such as salt air corrosion, water, the greasy dirt in cooker use process, and with
There is excellent adhesive force between iron cooker.Correspondingly, the present invention also provides the preparation methods of the coating.
In order to realize that technical purpose of the invention, the present invention adopt the following technical scheme that.
Improved heat-resisting, corrosion resistant hot melt penetrates coating, in parts by mass, including following component: polyamidoimide
15-20 parts of resin, 5-10 parts of polyethersulfone resin, 20-30 parts of ketones solvent, 15-20 parts of viscosity modifier, 15-25 parts of aluminum paste,
0.5-1.5 parts of triethylamine, 3-6 parts of nano aluminium oxide, 1-3 parts of inorganic filler, 0.5-1.5 parts of levelling agent.
Preferably, the viscosity of the polyamide-imide resin be 0.9-5.9Pas, preferably 1.0-3.5Pas, more
It is well 1.1-2.2Pas.Its tensile strength (ASTM D-638) is 95-110MPa, preferably 98-105MPa；At 300 DEG C
Viscosity is 0.96-0.98Pas.The glass transition temperature (ASTM E-1356) of the polyamide-imide resin is 200-300
DEG C, preferable is 210-290 DEG C, preferably 220-280 DEG C.The thermal decomposition temperature of the polyamide-imide resin is up to 550
DEG C, it is available on the market, preferably is selected from HPC-6000A-26D, HPC-6000A-28, HPC- of Hitachi, Japan chemical company
1000-28 product type.
Preferably, the ketones solvent be cyclohexanone, butanone, diisobutyl ketone, methyl amyl ketone, methyl isoamyl ketone,
One or more of N-Methyl pyrrolidone.It is furthermore preferred that the ketones solvent is diisobutyl ketone, cyclohexanone or N- methyl
Pyrrolidones, more preferably N-Methyl pyrrolidone.The N-Methyl pyrrolidone is available on the market, and preferably is selected from moral
Beyer Co., Ltd, state or BASF AG's product.
Preferably, the viscosity modifier is methylisobutylketone.
Preferably, the aluminum paste is non-leafing aluminum paste, average grain diameter 10-13um.It is public preferably to be selected from U.S.'s star platinum connection
Department, German Eckart GmbH & Co. KG, domestic Yin Jian company and mountain and sea Chemical Co., Ltd. product, wherein being calculated by mass percentage, aluminium
The solid content of silver paste is 55% ± 2%.
Preferably, the average particle size of the nano aluminium oxide is 20-100nm, specific surface area >=230m2/g.The nanometer
Aluminum oxide grain size is evenly distributed, good dispersion, and specific surface is high, can carry out strengthening and toughening to film forming after paint solidification, especially
It is compactness, finish, cool-hot fatigue, fracture toughness, creep-resistant property and the wearability for improving coating film forming.Meanwhile it is high
Adsorption brought by specific surface area can also improve the adhesive force between dope layer and iron cooker.
Preferably, the inorganic filler is one or more of talcum powder, sericite and barium sulfate.It is more preferably sliding
Mountain flour or sericite, due to talcum powder or sericite have wear resistence and wearability is good, high temperature insulation, be insoluble in acid-base solution,
Chemical property is stable, in aqueous medium and organic solvent the characteristics of good dispersion, to the wearability, chemical stability and water of coating
Dispersibility etc. has improvement result in medium and organic solvent.The average grain diameter of the inorganic filler is 10-30 microns, partial size mistake
Although, due to having big difference with other material particular diameters, can cause producing by milled processed, in the present invention greatly
The production cost increases for grinding process in journey, thus preferred partial size is≤30 microns；Still further aspect considers wanting for cost of material
It asks, the smaller cost of raw material of granularity is higher, therefore preferably >=10 microns.
Further, although inorganic filler wearability, chemical stability to coating in the present invention and aqueous medium and can have
Dispersibility etc. have improvement result in solvent, but it is unconfined that the addition of such filler, which is not,.When in coating of the present invention
When the content of inorganic filler is more than the 10% of the mass parts that raw material always matches, it will lead to adhesive force between dope layer and iron cooker
Sharply decline, to lose adhesiveness, preferred filler mass fraction is 1-3 parts in the present invention.
Further, the levelling agent is isophorone, polyether polyester azo polyether polyeste, alkyl-modified organosiloxane
One of.Preferably polyether polyester azo polyether polyeste can promote coating to form one during the drying and film forming process and put down
Whole, smooth, uniform film is effectively reduced and covers with paint, lacquer, colour wash, etc. liquid surface tension, improves the levelability and uniformity of coating, and can improve
Coating permeability generates spot and a possibility that spot, increases spreadability when reducing spraying, make film forming uniformly, it is natural.It is described poly-
Ether polyester modified organic siloxane is available on the market, and preferably is selected from BYK-300, BYK306, BYK- of Bayer A.G
No. 331 products.
Correspondingly, the present invention also provides the preparation methods that improved heat-resisting, corrosion resistant hot melt penetrates coating, including such as
Lower step:
(1) polyamide-imide resin of proportional quantity is added in ketones solvent under 800-1000rpm high-speed stirred,
Wherein the mass ratio of polyamide-imide resin and ketones solvent is 1: 1, continues after being dispersed with stirring uniformly, is ground to material size
≤ 10um obtains polyamidoimide mixed liquor, spare；
(2) polyethersulfone resin of proportional quantity is added in ketones solvent under 1200-1400rpm high-speed stirred, is kept
The mass ratio of polyethersulfone resin and ketones solvent is 1: 1, sequentially adds nano aluminium oxide and viscosity modifier, continues to be dispersed with stirring
To after uniformly, it is ground to fineness of materials≤10um with sand mill, obtains semi-finished product slurry, it is spare；
(3) in the state of high-speed stirred, by ketones solvent, viscosity modifier, inorganic filler, levelling agent, aluminum paste and step
Suddenly the semi-finished product slurry of gained polyethersulfone resin is added into step (1) in gained polyamidoimide mixed liquor in (2),
It is stirred until homogeneous under low speed in 400-600rpm, adjusts PH=9.5-10 with triethylamine, obtain the stable coating of performance.
Wherein, in parts by mass, step (3) the medium viscosity regulator additional amount is 10-15 parts.
The beneficial effects of the present invention are: the present invention provides a kind of hot melts of improved heat-and corrosion-resistant to penetrate coating, with
The prior art is compared, and is had the following advantages that.
1. containing a large amount of aluminum paste and nano aluminium oxide in the formulation for coating material in the present invention, to irony when being conducive to film
Cooker different surface roughness is filled, and is reduced the surface treatment requirement of iron cooker before film, is on the one hand effectively solved
On the other hand oil paint reduces the processing cost of enterprise the problem of being easy blistering in coarse meltallizing iron layer；
2. by be added polyethersulfone resin polyamide-imide resin is modified, make paint coatings corrosion resistance,
Flexibility, impact strength are improved；
3. polyamide-imide resin coating belongs to thermoplastic systems in formulation for coating material of the present invention, with organosilicon coating and pottery
Porcelain coating is compared, and has higher impact strength, can effectively prevent the scratch that hot melt penetrates layer to electromagnetic oven.
4. using talcum powder or sericite as inorganic filler, to the wear resistence of coating, chemical property stabilization and in water
Dispersion suspension in medium and organic solvent makes moderate progress and improves.
Specific embodiment
In order to better understand the present invention, invention is described in detail combined with specific embodiments below.
Embodiment 1
Improved heat-resisting, corrosion resistant hot melt penetrates coating, in parts by mass, including following component: polyamidoimide
15 parts of resin, 10 parts of polyethersulfone resin, 20 parts of N-Methyl pyrrolidone, 20 parts of methylisobutylketone, 25 parts of aluminum paste, triethylamine
0.5 part, 3 parts of nano aluminium oxide, 3 parts of sericite, 0.5 part of polyether polyester azo polyether polyeste.
Improved heat-resisting, corrosion resistant hot melt penetrates the preparation method of coating, includes the following steps:
(1) polyamide-imide resin of proportional quantity is added to N- methylpyrrole under 800-1000rpm high-speed stirred
In alkanone, wherein the mass ratio of polyamide-imide resin and N-Methyl pyrrolidone is 1: 1, is continued after being dispersed with stirring uniformly,
It is ground to material size≤10um, obtains polyamidoimide mixed liquor, it is spare；
(2) polyethersulfone resin of proportional quantity is added to N-Methyl pyrrolidone under 1200-1400rpm high-speed stirred
In, keeping the mass ratio of polyethersulfone resin and N-Methyl pyrrolidone is 1: 1, sequentially adds nano aluminium oxide and methyl tert-butyl
Ketone continues to be dispersed with stirring to after uniformly, is ground to fineness of materials≤10um with sand mill, obtains semi-finished product slurry, spare；
(3) in the state of high-speed stirred, N-Methyl pyrrolidone, methylisobutylketone, sericite, polyether polyester modification are had
Gained polyamide is added into step (1) in the semi-finished product slurry of gained polyethersulfone resin in organic siloxane, aluminum paste and step (2)
It in acid imide mixed liquor, is stirred until homogeneous under low speed in 400-600rpm, adjusts PH=9.5-10 with triethylamine, obtain performance
Stable coating, is denoted as A1.Wherein, in parts by mass, methylisobutylketone additional amount is 10 parts in the step (3).
Embodiment 2
Improved heat-resisting, corrosion resistant hot melt penetrates coating, in parts by mass, including following component: polyamidoimide
It 20 parts of resin, 5 parts of polyethersulfone resin, 30 parts of ketones solvent, 15 parts of methylisobutylketone, 15 parts of aluminum paste, 1.5 parts of triethylamine, receives
5 parts of aluminium oxide, 2 parts of sericite, 1.5 parts of polyether polyester azo polyether polyeste of rice.
Improved heat-resisting, corrosion resistant hot melt penetrates the preparation method of coating, includes the following steps:
(1) polyamide-imide resin of proportional quantity is added to diisobutyl ketone under 800-1000rpm high-speed stirred
In, wherein polyamide-imide resin and the mass ratio of diisobutyl ketone are 1: 1, continue after being dispersed with stirring uniformly, are ground to object
Material granularity≤10um obtains polyamidoimide mixed liquor, spare；
(2) polyethersulfone resin of proportional quantity is added to N-Methyl pyrrolidone under 1200-1400rpm high-speed stirred
In, keeping the mass ratio of polyethersulfone resin and N-Methyl pyrrolidone is 1: 1, sequentially adds nano aluminium oxide and methyl tert-butyl
Ketone continues to be dispersed with stirring to after uniformly, is ground to fineness of materials≤10um with sand mill, obtains semi-finished product slurry, spare；
(3) in the state of high-speed stirred, by diisobutyl ketone, methylisobutylketone, sericite, polyether polyester modified organic silicon
It is sub- that gained polyamide acyl is added into step (1) in the semi-finished product slurry of gained polyethersulfone resin in oxygen alkane, aluminum paste and step (2)
It in amine mixed liquor, is stirred until homogeneous under low speed in 400-600rpm, adjusts PH=9.5-10 with triethylamine, obtained performance and stablize
Coating, be denoted as A2.Wherein, in parts by mass, methylisobutylketone additional amount is 12 parts in the step (3).
Embodiment 3
Improved heat-resisting, corrosion resistant hot melt penetrates coating, in parts by mass, including following component: polyamidoimide
20 parts of resin, 8 parts of polyethersulfone resin, 30 parts of ketones solvent, 18 parts of methylisobutylketone, 22 parts of aluminum paste, 1 part of triethylamine, nanometer
6 parts of aluminium oxide, 1 part of inorganic filler, 1 part of isophorone.
Improved heat-resisting, corrosion resistant hot melt penetrates the preparation method of coating, includes the following steps:
(1) polyamide-imide resin of proportional quantity is added in cyclohexanone under 800-1000rpm high-speed stirred,
The mass ratio of middle polyamide-imide resin and cyclohexanone is 1: 1, after continuing to be dispersed with stirring uniformly, be ground to material size≤
10um obtains polyamidoimide mixed liquor, spare；
(2) polyethersulfone resin of proportional quantity is added in butanone under 1200-1400rpm high-speed stirred, keeps polyethers
The mass ratio of sulphone resin and butanone is 1: 1, sequentially adds nano aluminium oxide and methylisobutylketone, continues to be dispersed with stirring to uniform
Afterwards, it is ground to fineness of materials≤10um with sand mill, obtains semi-finished product slurry, it is spare；
(3) in the state of high-speed stirred, by N-Methyl pyrrolidone, methylisobutylketone, sericite and talcum powder, different fluorine that
Gained polyamidoimide is added into step (1) in the semi-finished product slurry of gained polyethersulfone resin in ketone, aluminum paste and step (2)
It in mixed liquor, is stirred until homogeneous under low speed in 400-600rpm, adjusts PH=9.5-10 with triethylamine, it is stable to obtain performance
Coating is denoted as A3.Wherein, in parts by mass, methylisobutylketone additional amount is 12 parts in the step (3).
Embodiment 4
Improved heat-resisting, corrosion resistant hot melt penetrates coating, in parts by mass, including following component: polyamidoimide
It 18 parts of resin, 5 parts of polyethersulfone resin, 25 parts of ketones solvent, 20 parts of methylisobutylketone, 18 parts of aluminum paste, 0.5 part of triethylamine, receives
3 parts of aluminium oxide, 3 parts of barium sulfate, 1.5 parts of alkyl-modified organosiloxane of rice.
Improved heat-resisting, corrosion resistant hot melt penetrates the preparation method of coating, includes the following steps:
(1) polyamide-imide resin of proportional quantity is added to methyl amyl ketone under 800-1000rpm high-speed stirred,
Wherein the mass ratio of polyamide-imide resin and methyl amyl ketone is 1: 1, continues after being dispersed with stirring uniformly, is ground to material grain
Degree≤10um obtains polyamidoimide mixed liquor, spare；
(2) polyethersulfone resin of proportional quantity is added in methyl isoamyl ketone under 1200-1400rpm high-speed stirred,
It keeps polyethersulfone resin and the mass ratio of methyl isoamyl ketone is 1: 1, sequentially add nano aluminium oxide and methylisobutylketone, continue
Be dispersed with stirring to uniformly after, be ground to fineness of materials≤10um with sand mill, obtain semi-finished product slurry, it is spare；
(3) in the state of high-speed stirred, by N-Methyl pyrrolidone, methylisobutylketone, barium sulfate, alkyl-modified organosilicon
It is sub- that gained polyamide acyl is added into step (1) in the semi-finished product slurry of gained polyethersulfone resin in oxygen alkane, aluminum paste and step (2)
It in amine mixed liquor, is stirred until homogeneous under low speed in 400-600rpm, adjusts PH=9.5-10 with triethylamine, obtained performance and stablize
Coating, be denoted as A4.Wherein, in parts by mass, methylisobutylketone additional amount is 15 parts in the step (3).
Comparative example 1 (is free of nano aluminium oxide)
Improved heat-resisting, corrosion resistant hot melt penetrates coating, in parts by mass, including following component: polyamidoimide
20 parts of resin, 5 parts of polyethersulfone resin, 30 parts of ketones solvent, 15 parts of methylisobutylketone, 15 parts of aluminum paste, 1.5 parts of triethylamine, thin,tough silk
2 parts of mica, 1.5 parts of polyether polyester azo polyether polyeste.
Improved heat-resisting, corrosion resistant hot melt penetrates the preparation method of coating, includes the following steps:
(1) polyamide-imide resin of proportional quantity is added to diisobutyl ketone under 800-1000rpm high-speed stirred
In, wherein polyamide-imide resin and the mass ratio of diisobutyl ketone are 1: 1, continue after being dispersed with stirring uniformly, are ground to object
Material granularity≤10um obtains polyamidoimide mixed liquor, spare；
(2) polyethersulfone resin of proportional quantity is added to N-Methyl pyrrolidone under 1200-1400rpm high-speed stirred
In, keeping the mass ratio of polyethersulfone resin and N-Methyl pyrrolidone is 1: 1, and methylisobutylketone is added, continue to be dispersed with stirring to
After uniformly, it is ground to fineness of materials≤10um with sand mill, obtains semi-finished product slurry, it is spare；
(3) in the state of high-speed stirred, by diisobutyl ketone, methylisobutylketone, sericite, polyether polyester modified organic silicon
It is sub- that gained polyamide acyl is added into step (1) in the semi-finished product slurry of gained polyethersulfone resin in oxygen alkane, aluminum paste and step (2)
It in amine mixed liquor, is stirred until homogeneous under low speed in 400-600rpm, adjusts PH=9.5-10 with triethylamine, obtained performance and stablize
Coating, be denoted as B1.Wherein, in parts by mass, methylisobutylketone additional amount is 12 parts in the step (3).
Comparative example 2 (is free of inorganic filler)
Improved heat-resisting, corrosion resistant hot melt penetrates coating, in parts by mass, including following component: polyamidoimide
It 20 parts of resin, 5 parts of polyethersulfone resin, 30 parts of ketones solvent, 15 parts of methylisobutylketone, 15 parts of aluminum paste, 1.5 parts of triethylamine, receives
5 parts of aluminium oxide, 1.5 parts of polyether polyester azo polyether polyeste of rice.
Improved heat-resisting, corrosion resistant hot melt penetrates the preparation method of coating, includes the following steps:
(1) polyamide-imide resin of proportional quantity is added to diisobutyl ketone under 800-1000rpm high-speed stirred
In, wherein polyamide-imide resin and the mass ratio of diisobutyl ketone are 1: 1, continue after being dispersed with stirring uniformly, are ground to object
Material granularity≤10um obtains polyamidoimide mixed liquor, spare；
(2) polyethersulfone resin of proportional quantity is added to N-Methyl pyrrolidone under 1200-1400rpm high-speed stirred
In, keeping the mass ratio of polyethersulfone resin and N-Methyl pyrrolidone is 1: 1, sequentially adds nano aluminium oxide and methyl tert-butyl
Ketone continues to be dispersed with stirring to after uniformly, is ground to fineness of materials≤10um with sand mill, obtains semi-finished product slurry, spare；
(3) in the state of high-speed stirred, by diisobutyl ketone, methylisobutylketone, polyether polyester azo polyether polyeste, aluminium
Gained polyamidoimide mixing is added into step (1) in the semi-finished product slurry of gained polyethersulfone resin in silver paste and step (2)
It in liquid, is stirred until homogeneous under low speed in 400-600rpm, adjusts PH=9.5-10 with triethylamine, obtain the stable painting of performance
Material, is denoted as B2.Wherein, in parts by mass, methylisobutylketone additional amount is 12 parts in the step (3).
It to embodiment 1-4 and comparative example 1-2 products obtained therefrom, is coated on iron cooker, is tested for the property after film forming, tie
Fruit is as shown in table 1.
Testing result after 1 embodiment 1-4 of table and comparative example 1-2 coating form a film
| Test item | A1 | A2 | A3 | A4 | B1 | B2 |
| Salt fog resistance corrosion test (hour) | 400 | 400 | 400 | 400 | 354 | <300 |
| Wear-resisting test (mg/kg) | 24 | 14 | 22 | 15 | 26 | 56 |
| Adhesive force test | 0 grade | 0 grade | 0 grade | 0 grade | 1 grade | 0 grade |
| Heat resistance test | Normally | Normally | Normally | Normally | Partial exfoliation | Blistering |
| Acid resistance test | It is without exception | It is without exception | It is without exception | It is without exception | Corrosion | Corrosion |
| Alkali resistance test | It is without exception | It is without exception | It is without exception | It is without exception | Corrosion | Corrosion |
| Pencil hardness test | H | H | H | H | 2H | 2H |
Note: each performance test methods are as follows in table 1.
Salt fog resistance corrosion test: 5wt%NaCl solution；
Wearability test: GB/T 1768-79 (89)；
Adhesive force test: ISO 12944；
The statuses such as heat resistance test: 450 DEG C keep the temperature 1 hour, and whether observation coating surface generates blistering, falls off；
Acid resistance test: 5% sulfuric acid solution impregnates 7 days；
Alkali resistance test: 5% sodium hydroxide solution impregnates 7 days.
It can be seen that improved heat-resisting, the corrosion resistant hot melt of one kind provided by the invention according to upper table data and penetrate coating,
Optimization is selected on raw material proportioning composition, can have preferable hardness, rub resistance with excellent combination property, it is good flexible
Property, shock resistance and heat resistance, replace hot melt to penetrate aluminium layer as new protective coating, can satisfy in cooker use process
The corrosion requirement such as salt air corrosion, water, greasy dirt, and there is excellent adhesive force between iron cooker.
Improved heat-resisting, the corrosion resistant hot melt of one kind provided by the invention penetrates coating, can be also used for protecting carbon steel, no
The corrosion of products in the seawater such as rust steel.
The basic principles, main features and advantages of the invention have been shown and described above.The technical staff of the industry should
Understand, the above embodiments do not limit the invention in any form, all obtained by the way of equivalent substitution or equivalent transformation
Technical solution is fallen within the scope of protection of the present invention.
Claims (6)
1. improved heat-resisting, corrosion resistant hot melt penetrates coating, which is characterized in that in parts by mass, be made of following component: poly-
15-20 parts of amide imide resin, 5-10 parts of polyethersulfone resin, 20-30 parts of ketones solvent, 15-20 parts of viscosity modifier, aluminium silver
15-25 parts, 0.5-1.5 parts of triethylamine, 3-6 parts of nano aluminium oxide, 1-3 parts of inorganic filler, 0.5-1.5 parts of levelling agent of slurry；It is described
Hot melt penetrates coating for irony substrate；
The aluminum paste is non-leafing aluminum paste, and average grain diameter is 10-13 μm；The average particle size of the nano aluminium oxide is 20-
100nm, specific surface area >=230m2/g；
The inorganic filler is talcum powder or sericite, and the average grain diameter of the inorganic filler is 10-30 microns；
The preparation method of the coating includes the following steps:
(1) polyamide-imide resin of proportional quantity is added in ketones solvent under 800-1000rpm high-speed stirred, wherein
The mass ratio of polyamide-imide resin and ketones solvent is 1:1, continues after being dispersed with stirring uniformly, is ground to material size≤10
μm, polyamidoimide mixed liquor is obtained, it is spare；
(2) polyethersulfone resin of proportional quantity is added in ketones solvent under 1200-1400rpm high-speed stirred, keeps polyethers
The mass ratio of sulphone resin and ketones solvent is 1:1, sequentially adds nano aluminium oxide and viscosity modifier, continues to be dispersed with stirring to equal
After even, fineness of materials≤10 μm are ground to sand mill, obtain semi-finished product slurry, it is spare；
(3) in the state of high-speed stirred, by ketones solvent, viscosity modifier, inorganic filler, levelling agent, aluminum paste and step (2)
The semi-finished product slurry of middle gained polyethersulfone resin is added into step (1) in gained polyamidoimide mixed liquor, in 400-
It is stirred until homogeneous under low speed in 600rpm, adjusts pH=9.5-10 with triethylamine, obtain the stable coating of performance；
Step (3) the medium viscosity regulator additional amount is 10-15 parts.
2. improved heat-resisting, corrosion resistant hot melt according to claim 1 penetrates coating, it is characterised in that: the ketone
Solvent be one of cyclohexanone, butanone, diisobutyl ketone, methyl amyl ketone, methyl isoamyl ketone, N-Methyl pyrrolidone or
It is several.
3. improved heat-resisting, corrosion resistant hot melt according to claim 1 penetrates coating, it is characterised in that: the viscosity
Regulator is methylisobutylketone.
4. improved heat-resisting, corrosion resistant hot melt according to claim 1 penetrates coating, it is characterised in that: the levelling
Agent is one of isophorone, polyether polyester azo polyether polyeste, alkyl-modified organosiloxane.
5. improved heat-resisting, corrosion resistant hot melt according to claim 1-4 penetrates the preparation method of coating,
It is characterized in that, includes the following steps:
(1) polyamide-imide resin of proportional quantity is added in ketones solvent under 800-1000rpm high-speed stirred, wherein
The mass ratio of polyamide-imide resin and ketones solvent is 1:1, continues after being dispersed with stirring uniformly, is ground to material size≤10
μm, polyamidoimide mixed liquor is obtained, it is spare；
(2) polyethersulfone resin of proportional quantity is added in ketones solvent under 1200-1400rpm high-speed stirred, keeps polyethers
The mass ratio of sulphone resin and ketones solvent is 1:1, sequentially adds nano aluminium oxide and viscosity modifier, continues to be dispersed with stirring to equal
After even, fineness of materials≤10 μm are ground to sand mill, obtain semi-finished product slurry, it is spare；
(3) in the state of high-speed stirred, by ketones solvent, viscosity modifier, inorganic filler, levelling agent, aluminum paste and step (2)
The semi-finished product slurry of middle gained polyethersulfone resin is added into step (1) in gained polyamidoimide mixed liquor, in 400-
It is stirred until homogeneous under low speed in 600rpm, adjusts pH=9.5-10 with triethylamine, obtain the stable coating of performance；
Step (3) the medium viscosity regulator additional amount is 10-15 parts.
6. a kind of improved heat-resisting, corrosion resistant hot melt described in any one of -4 according to claim 1 penetrates the purposes of coating,
It is characterized in that, the hot melt, which is penetrated coating, is used for irony substrate.
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