CN108727981A - A kind of high-temperature service high-temperature resistant coating and preparation method thereof - Google Patents
A kind of high-temperature service high-temperature resistant coating and preparation method thereof Download PDFInfo
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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
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/10—Block or graft copolymers containing polysiloxane sequences
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/42—Block-or graft-polymers containing polysiloxane sequences
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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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- 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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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
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- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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Abstract
A kind of high-temperature service high-temperature resistant coating of present invention offer and preparation method thereof, is prepared by following component：Lithium bentonite, modified organic silicone resin, aqueous polyurethane emulsion, toughened fiber, high temperature resistant filler, high-temperature agglomerant, mineral oil, Lauryl Alcohol ester, propylene glycol phenylate, hydroxymethyl cellulose, sodium polycarboxylate, polymethylphenylsiloxane and deionized water.High-temperature resistant coating prepared by the present invention can be applied to a variety of high-temperature services, can save energy consumption in lower long-time service at higher temperature, extend the service life of high-temperature service, also have the advantages that preparation process is simple, is suitable for industrialization large-scale production.
Description
Technical field
The invention belongs to heat-resisting material technical fields, and in particular to a kind of high-temperature service high-temperature resistant coating and its preparation
Method.
Background technology
High speed development with social economy and the improvement of people's living standards, industrial equipment and civil electric appliance for
Higher requirements are also raised for the coating used.Industrial many application requirements equipment can heat conduction, heat-resisting, such as heat exchanger fin；It is many
More electric appliance, equipment etc. also require equipment can insulate, conduct heat, high temperature resistant.
High-temperature resistant coating refers to temperature at 200 DEG C or more, and paint film is non-discolouring, does not fall off, remains to keep physical machine appropriate
The coating material of tool performance.High-temperature resistant coating is widely used in chimney, high temperature steam pipeline, heat exchanger, high temperature furnace, oil and splits
Solve equipment, motor part and exhaust pipe etc..High-temperature resistant coating type is various, mainly there is inorganic high-temperature resistant currently on the market
Coating and organic high temperature-resistant coating two major classes.Wherein, refractory inorganic paint mainly has ceramic coating, silicates coating, phosphorus
Barbiturates coating and zinc rich primer etc., although inorganic series environmental protection, it is constructed and pre-treatment of substrate requirement is high, to a certain degree
On limit its application.Organic high temperature-resistant coating mainly has fluorine resin coating, heterocycle polymer coating and organosilicon fire-resistant to apply
Material etc..For organic siliconresin using silicon oxygen bond as main chain, Si-O key polarity is big, and shielding action is played to connected hydrocarbyl group, improves
Its oxidation stability, it is heated after organosilyl surface produce-Si-O-Si- chain protective layers, alleviate to the shadow inside high polymer
It rings, there is excellent heat resistance and weatherability, thus be widely used industry-by-industry.With increasingly carrying for living standards of the people
The demand of height, the enhancing of the awareness of environment protection and health of people, water paint is more and more, and high temperature organosilicon paint in the market
Solvent based coating is substantially belonged to, there are different degrees of VOC volatilizations, therefore, also needs further to be promoted.
It is prepared into using thermoplastic resin, fluoropolymer and metal oxide in German patent DE 102006061940
To insulation high-temperature-resistant coating, but the coating needs 300 DEG C of solidifications and heat conductivility is not investigated.Russ P RU2008-
It uses acrylic resin and organic siliconresin as main binding agent in 133374, is mixed into appropriate polyurethane, and inorganic fill out is added
Heat-resistant fireproof coating, but only this performance of emphasis high temperature resistant in the patent is prepared in material, and has ignored coating and led in insulation
The investigation of hot aspect.
Domestic patent be related to insulation high-temperature-resistant patent also have very much, as CN101029196, CN101643625,
CN101560342 etc. all refers to the insulation heat-resisting paint used about metal surface, prepare gained coating have it is excellent exhausted
The function of edge heat-and corrosion-resistant, but these coating equal Shortcomings or are not studied in terms of heat conduction.
In summary, it is therefore desirable to a kind of better high-temperature resistant coating, to improve the deficiencies in the prior art.
Invention content
The object of the present invention is to provide a kind of high-temperature service high-temperature resistant coatings and preparation method thereof, and the present invention is prepared resistance to
High-temperature coatings can be applied to a variety of high-temperature services, can save energy consumption in lower long-time service at higher temperature, extend high-temperature service
Service life also has the advantages that preparation process is simple, is suitable for industrialization large-scale production.
The present invention provides the following technical solutions：
A kind of high-temperature service high-temperature resistant coating, includes the raw material of following parts by weight：15-19 parts of lithium bentonite, modification are organic
21-26 parts of silicones, 14-19 parts of aqueous polyurethane emulsion, 7-12 parts of toughened fiber, 9-13 parts of high temperature resistant filler, high temperature bond
3-7 parts of agent, 4-8 parts of mineral oil, 4-8 parts of Lauryl Alcohol ester, 3-6 parts of propylene glycol phenylate, 5-9 parts of hydroxymethyl cellulose, polycarboxylic acids
11-16 parts of 3-7 parts of sodium, 5-10 parts of polymethylphenylsiloxane and deionized water.
Preferably, the high-temperature resistant coating includes the raw material of following parts by weight：17-19 parts of lithium bentonite, modification are organic
24-26 parts of silicones, 14-18 parts of aqueous polyurethane emulsion, 9-12 parts of toughened fiber, 10-13 parts of high temperature resistant filler, high temperature bond
3-6 parts of agent, 5-8 parts of mineral oil, 6-8 parts of Lauryl Alcohol ester, 3-5 parts of propylene glycol phenylate, 5-8 parts of hydroxymethyl cellulose, polycarboxylic acids
13-16 parts of 4-7 parts of sodium, 7-10 parts of polymethylphenylsiloxane and deionized water.
Preferably, the high-temperature resistant coating includes the raw material of following parts by weight：18 parts of lithium bentonite, modified organic silicon tree
25 parts of fat, 17 parts of aqueous polyurethane emulsion, 10 parts of toughened fiber, 12 parts of high temperature resistant filler, 4 parts of high-temperature agglomerant, mineral oil 6
Part, 7 parts of Lauryl Alcohol ester, 4 parts of propylene glycol phenylate, 7 parts of hydroxymethyl cellulose, 5 parts of sodium polycarboxylate, polymethylphenylsiloxane 8
15 parts of part and deionized water.
A kind of preparation method of high-temperature service high-temperature resistant coating, including following preparation process：
A, lithium bentonite is placed at 220-240 DEG C dry 5-7min, then 1000 mesh sieve was crushed to through pulverizer, be blended into
In ionized water, 10-15min is dispersed with stirring with the rotating speed of 200-240r/min, obtains dispersion liquid；
B, modified organic silicone resin, hydroxymethyl cellulose and sodium polycarboxylate are imported in reaction kettle, is warming up to 125-129 DEG C, adds
Heat is simultaneously stirred to react 18-22min, adds toughened fiber and high temperature resistant filler, imports in high-speed shearing machine, keeps the temperature and shears point
1.2-1.5h is dissipated, material one is obtained；
C, Lauryl Alcohol ester, propylene glycol phenylate, sodium polycarboxylate and polymethylphenylsiloxane are added into material one, mixing is equal
It is even, it imports in batch mixer, stirs 30-35min under the rotating speed of 500-600r/min, obtain material two；
D, material two is added in dispersion liquid, stirs 5-8min, adds high-temperature agglomerant, aqueous polyurethane emulsion and mineral
Oil is warming up to 68-73 DEG C, is stirred to react 0.8-1h, after being cooled to room temperature, re-ultrasonic dispersion 15-18min, you can obtain finished product.
Preferably, the preparation method of the modified organic silicone resin of the step b is：By organosilicon preformed polymer solution and epoxy
Resin in mass ratio 3:2 mixing, add naphthenate, are reacted at 94-96 DEG C, abstraction reaction object is measured, and works as measurement
Gelation time at 200 DEG C terminates reaction when being 60-100s, and it is 45-55% then to add dimethylbenzene and be diluted to solid holdup
When, you can obtain modified organic silicone resin.
Preferably, the preparation method of the organosilicon preformed polymer solution is：By methltriethoxysilone, dimethyl two
Chlorosilane is added in xylene solvent, is heated to 62 DEG C, and it is 5 that the hydrochloric acid solution for being 30% with mass concentration, which adjusts pH value, then
Distilled water is added, reacts 25min, stratification takes upper solution to be washed to neutrality, and vacuum distillation to solid holdup is 60%, i.e.,
Organosilicon preformed polymer solution can be obtained.
Preferably, the naphthenate zinc naphthenate, calcium naphthenate and cyclic potassium naphthenate in mass ratio 2:1:1 mixes.
Preferably, the toughened fiber of the step b be Zirconium oxide fibre, alumina fibre, aluminium silicate fiber peacekeeping polycrystalline not
Carry out mineral wool in mass ratio 5:5:2:1 mixes.
Preferably, the high temperature resistant filler of the step b is that talcum powder, blanc fixe, mica powder and glass powder press quality
Than 7:3:5:2 mix.
Preferably, the high-temperature agglomerant of the step d is aluminium dihydrogen phosphate, Ludox and Aluminum sol in mass ratio 1:2:1
It mixes.
The beneficial effects of the invention are as follows：
High-temperature resistant coating prepared by the present invention can be applied to a variety of high-temperature services, can be saved in lower long-time service at higher temperature
Energy consumption, extends the service life of high-temperature service, also has the advantages that preparation process is simple, is suitable for industrialization large-scale production.
The preparation of modified organic silicone resin in the present invention passes through epoxy resin modification system by organosilicon preformed polymer solution
Standby to obtain, making general reaction, quickly, efficiently, uniformly concise in technology, smooth, condition is easy to control, and reaction process is stablized, consistency
It is good.It can make coating that there is good adhesion to metal surface, additionally there is high hardness, coated metal is made to be not easy to scrape
Flower has a variety of integrated protection effects.
Toughened fiber in the present invention is Zirconium oxide fibre, alumina fibre, aluminium silicate fiber peacekeeping polycrystalline mullite fibre
Proportioning, under the ratio, the mixing of the above fiber has good mechanical property at high temperature, has reinforcement to coating, increases
Tough effect improves the thermal shock resistance and service life of coating.
High temperature resistant filler in the present invention is the proportioning of talcum powder, blanc fixe, mica powder and glass powder, the above ingredient
Excellent weatherability and higher high-temperature stability are all had, to greatly improve the high-temperature resistant result of finished product.
Specific implementation mode
Embodiment 1
A kind of high-temperature service high-temperature resistant coating, includes the raw material of following parts by weight：15 parts of lithium bentonite, modified organic silicon tree
21 parts of fat, 14 parts of aqueous polyurethane emulsion, 12 parts of toughened fiber, 13 parts of high temperature resistant filler, 7 parts of high-temperature agglomerant, mineral oil 8
Part, 4 parts of Lauryl Alcohol ester, 3 parts of propylene glycol phenylate, 5 parts of hydroxymethyl cellulose, 3 parts of sodium polycarboxylate, polymethylphenylsiloxane 10
16 parts of part and deionized water.
A kind of preparation method of high-temperature service high-temperature resistant coating, including following preparation process：
A, lithium bentonite is placed at 240 DEG C dry 7min, then 1000 mesh sieve was crushed to through pulverizer, be blended into deionized water
In, 15min is dispersed with stirring with the rotating speed of 200r/min, obtains dispersion liquid；
B, modified organic silicone resin, hydroxymethyl cellulose and sodium polycarboxylate are imported in reaction kettle, is warming up to 125 DEG C, heating is simultaneously
It is stirred to react 22min, adds toughened fiber and high temperature resistant filler, is imported in high-speed shearing machine, dispersion 1.5h is kept the temperature and shear,
Obtain material one；
C, Lauryl Alcohol ester, propylene glycol phenylate, sodium polycarboxylate and polymethylphenylsiloxane are added into material one, mixing is equal
It is even, it imports in batch mixer, stirs 35min under the rotating speed of 500r/min, obtain material two；
D, material two is added in dispersion liquid, stirs 5min, adds high-temperature agglomerant, aqueous polyurethane emulsion and mineral
Oil is warming up to 68 DEG C, is stirred to react 1h, after being cooled to room temperature, re-ultrasonic dispersion 15-18min, you can obtain finished product.
The preparation method of the modified organic silicone resin of step b is：Organosilicon preformed polymer solution and epoxy resin are pressed into quality
Than 3:2 mixing, add naphthenate, are reacted at 96 DEG C, and abstraction reaction object is measured, the gel when measuring 200 DEG C
Change the time be 80s when terminate reaction, then add dimethylbenzene be diluted to solid holdup be 45-55% when, you can obtain modification have
Machine silicones.
The preparation method of organosilicon preformed polymer solution is：Methltriethoxysilone, dimethyldichlorosilane are added
Into xylene solvent, 62 DEG C are heated to, it is 5 that the hydrochloric acid solution for being 30% with mass concentration, which adjusts pH value, adds distilled water,
25min is reacted, stratification takes upper solution to be washed to neutrality, and vacuum distillation to solid holdup is 60%, you can obtains organosilicon
Pre-polymer solution.
Naphthenate zinc naphthenate, calcium naphthenate and cyclic potassium naphthenate in mass ratio 2:1:1 mixes.
The toughened fiber of step b is Zirconium oxide fibre, alumina fibre, aluminium silicate fiber peacekeeping polycrystalline mullite fibre by matter
Measure ratio 5:5:2:1 mixes.
The high temperature resistant filler of step b is talcum powder, blanc fixe, mica powder and glass powder in mass ratio 7:3:5:2 is mixed
It closes.
The high-temperature agglomerant of step d is aluminium dihydrogen phosphate, Ludox and Aluminum sol in mass ratio 1:2:1 mixes.
Embodiment 2
A kind of high-temperature service high-temperature resistant coating, includes the raw material of following parts by weight：19 parts of lithium bentonite, modified organic silicon tree
24 parts of fat, 18 parts of aqueous polyurethane emulsion, 12 parts of toughened fiber, 10 parts of high temperature resistant filler, 3 parts of high-temperature agglomerant, mineral oil 5
Part, 8 parts of Lauryl Alcohol ester, 5 parts of propylene glycol phenylate, 8 parts of hydroxymethyl cellulose, 7 parts of sodium polycarboxylate, polymethylphenylsiloxane 7
13 parts of part and deionized water.
A kind of preparation method of high-temperature service high-temperature resistant coating, including following preparation process：
A, lithium bentonite is placed at 240 DEG C dry 5min, then 1000 mesh sieve was crushed to through pulverizer, be blended into deionized water
In, 15min is dispersed with stirring with the rotating speed of 200r/min, obtains dispersion liquid；
B, modified organic silicone resin, hydroxymethyl cellulose and sodium polycarboxylate are imported in reaction kettle, is warming up to 129 DEG C, heating is simultaneously
It is stirred to react 18min, adds toughened fiber and high temperature resistant filler, is imported in high-speed shearing machine, dispersion 1.5h is kept the temperature and shear,
Obtain material one；
C, Lauryl Alcohol ester, propylene glycol phenylate, sodium polycarboxylate and polymethylphenylsiloxane are added into material one, mixing is equal
It is even, it imports in batch mixer, stirs 30min under the rotating speed of 500r/min, obtain material two；
D, material two is added in dispersion liquid, stirs 8min, adds high-temperature agglomerant, aqueous polyurethane emulsion and mineral
Oil is warming up to 73 DEG C, is stirred to react 1h, after being cooled to room temperature, re-ultrasonic dispersion 18min, you can obtain finished product.
The preparation method of the modified organic silicone resin of step b is：Organosilicon preformed polymer solution and epoxy resin are pressed into quality
Than 3:2 mixing, add naphthenate, are reacted at 94 DEG C, and abstraction reaction object is measured, the gel when measuring 200 DEG C
Change the time be 80s when terminate reaction, then add dimethylbenzene be diluted to solid holdup be 45% when, you can obtain modified organic silicon
Resin.
The preparation method of organosilicon preformed polymer solution is：Methltriethoxysilone, dimethyldichlorosilane are added
Into xylene solvent, 62 DEG C are heated to, it is 5 that the hydrochloric acid solution for being 30% with mass concentration, which adjusts pH value, adds distilled water,
25min is reacted, stratification takes upper solution to be washed to neutrality, and vacuum distillation to solid holdup is 60%, you can obtains organosilicon
Pre-polymer solution.
Naphthenate zinc naphthenate, calcium naphthenate and cyclic potassium naphthenate in mass ratio 2:1:1 mixes.
The toughened fiber of step b is Zirconium oxide fibre, alumina fibre, aluminium silicate fiber peacekeeping polycrystalline mullite fibre by matter
Measure ratio 5:5:2:1 mixes.
The high temperature resistant filler of step b is talcum powder, blanc fixe, mica powder and glass powder in mass ratio 7:3:5:2 is mixed
It closes.
The high-temperature agglomerant of step d is aluminium dihydrogen phosphate, Ludox and Aluminum sol in mass ratio 1:2:1 mixes.
Embodiment 3
A kind of high-temperature service high-temperature resistant coating, includes the raw material of following parts by weight：18 parts of lithium bentonite, modified organic silicon tree
25 parts of fat, 17 parts of aqueous polyurethane emulsion, 10 parts of toughened fiber, 12 parts of high temperature resistant filler, 4 parts of high-temperature agglomerant, mineral oil 6
Part, 7 parts of Lauryl Alcohol ester, 4 parts of propylene glycol phenylate, 7 parts of hydroxymethyl cellulose, 5 parts of sodium polycarboxylate, polymethylphenylsiloxane 8
15 parts of part and deionized water.
A kind of preparation method of high-temperature service high-temperature resistant coating, including following preparation process：
A, lithium bentonite is placed at 240 DEG C dry 7min, then 1000 mesh sieve was crushed to through pulverizer, be blended into deionized water
In, 10min is dispersed with stirring with the rotating speed of 200r/min, obtains dispersion liquid；
B, modified organic silicone resin, hydroxymethyl cellulose and sodium polycarboxylate are imported in reaction kettle, is warming up to 125 DEG C, heating is simultaneously
It is stirred to react 22min, adds toughened fiber and high temperature resistant filler, is imported in high-speed shearing machine, dispersion 1.5h is kept the temperature and shear,
Obtain material one；
C, Lauryl Alcohol ester, propylene glycol phenylate, sodium polycarboxylate and polymethylphenylsiloxane are added into material one, mixing is equal
It is even, it imports in batch mixer, stirs 35min under the rotating speed of 500r/min, obtain material two；
D, material two is added in dispersion liquid, stirs 8min, adds high-temperature agglomerant, aqueous polyurethane emulsion and mineral
Oil is warming up to 68 DEG C, is stirred to react 1h, after being cooled to room temperature, re-ultrasonic dispersion 18min, you can obtain finished product.
The preparation method of the modified organic silicone resin of step b is：Organosilicon preformed polymer solution and epoxy resin are pressed into quality
Than 3:2 mixing, add naphthenate, are reacted at 96 DEG C, and abstraction reaction object is measured, the gel when measuring 200 DEG C
Change the time be 80s when terminate reaction, then add dimethylbenzene be diluted to solid holdup be 55% when, you can obtain modified organic silicon
Resin.
The preparation method of organosilicon preformed polymer solution is：Methltriethoxysilone, dimethyldichlorosilane are added
Into xylene solvent, 62 DEG C are heated to, it is 5 that the hydrochloric acid solution for being 30% with mass concentration, which adjusts pH value, adds distilled water,
25min is reacted, stratification takes upper solution to be washed to neutrality, and vacuum distillation to solid holdup is 60%, you can obtains organosilicon
Pre-polymer solution.
Naphthenate zinc naphthenate, calcium naphthenate and cyclic potassium naphthenate in mass ratio 2:1:1 mixes.
The toughened fiber of step b is Zirconium oxide fibre, alumina fibre, aluminium silicate fiber peacekeeping polycrystalline mullite fibre by matter
Measure ratio 5:5:2:1 mixes.
The high temperature resistant filler of step b is talcum powder, blanc fixe, mica powder and glass powder in mass ratio 7:3:5:2 is mixed
It closes.
The high-temperature agglomerant of step d is aluminium dihydrogen phosphate, Ludox and Aluminum sol in mass ratio 1:2:1 mixes.
Comparative example 1
Comparison is detected using common high-temperature resistant coating in the prior art.
Finished product prepared by above example and comparative example is detected, following detection data is obtained：
Table one：
| Detection project | Examination criteria | Embodiment 1 | Embodiment 2 | Embodiment 3 | Comparative example 1 |
| Solid content（%） | GB/T1725-79 | 71 | 70 | 71 | 66 |
| Paint film density（g/cm3） | Q/Ez159-2003 | 1.5 | 1.6 | 1.6 | 1.3 |
| Adhesive force（Grade） | GB/T1720-88 | 1 | 1 | 1 | 1 |
| Impact strength（kg·cm） | GB/T1732-79 | 61 | 58 | 63 | 54 |
| Viscosity（s） | GB/T1723-79 | 73 | 71 | 74 | 61 |
| Heat resistance（650 DEG C, 5min） | Q/Ez159-2003 | Paint film is intact | Paint film is intact | Paint film is intact | Paint film is intact |
| Static thermal insulation（℃） | Q/Ez159-2003 | 220 | 220 | 230 | 220 |
By the experimental data of one gained of table, it can be deduced that, the properties of finished product prepared by preparation method of the invention are significantly excellent
Different from common product in the prior art, and the preferred preparation method in the embodiment of the present invention 3, obtain at moral character
It can be the most excellent.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, although with reference to aforementioned reality
Applying example, invention is explained in detail, for those skilled in the art, still can be to aforementioned each implementation
Technical solution recorded in example is modified or equivalent replacement of some of the technical features.All essences in the present invention
With within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention god.
Claims (10)
1. a kind of high-temperature service high-temperature resistant coating, which is characterized in that include the raw material of following parts by weight：Lithium bentonite 15-
19 parts, 21-26 parts of modified organic silicone resin, 14-19 parts of aqueous polyurethane emulsion, 7-12 parts of toughened fiber, high temperature resistant filler 9-
13 parts, 3-7 parts of high-temperature agglomerant, 4-8 parts of mineral oil, 4-8 parts of Lauryl Alcohol ester, 3-6 parts of propylene glycol phenylate, hydroxymethyl cellulose
11-16 parts of 5-9 parts, 3-7 parts of sodium polycarboxylate, 5-10 parts of polymethylphenylsiloxane and deionized water.
2. a kind of high-temperature service high-temperature resistant coating according to claim 1, which is characterized in that the high-temperature resistant coating packet
Include the raw material of following parts by weight：17-19 parts of lithium bentonite, 24-26 parts of modified organic silicone resin, aqueous polyurethane emulsion 14-
18 parts, 9-12 parts of toughened fiber, 10-13 parts of high temperature resistant filler, 3-6 parts of high-temperature agglomerant, 5-8 parts of mineral oil, Lauryl Alcohol ester
6-8 parts, 3-5 parts of propylene glycol phenylate, 5-8 parts of hydroxymethyl cellulose, 4-7 parts of sodium polycarboxylate, 7-10 parts of polymethylphenylsiloxane
With 13-16 parts of deionized water.
3. a kind of high-temperature service high-temperature resistant coating according to claim 1, which is characterized in that the high-temperature resistant coating packet
Include the raw material of following parts by weight：18 parts of lithium bentonite, 25 parts of modified organic silicone resin, 17 parts of aqueous polyurethane emulsion, toughening
10 parts of fiber, 12 parts of high temperature resistant filler, 4 parts of high-temperature agglomerant, 6 parts of mineral oil, 7 parts of Lauryl Alcohol ester, 4 parts of propylene glycol phenylate,
15 parts of 7 parts of hydroxymethyl cellulose, 5 parts of sodium polycarboxylate, 8 parts of polymethylphenylsiloxane and deionized water.
4. a kind of preparation method of high-temperature service high-temperature resistant coating of claim 1-3 any one of them, which is characterized in that packet
Include following preparation process：
A, lithium bentonite is placed at 220-240 DEG C dry 5-7min, then 1000 mesh sieve was crushed to through pulverizer, be blended into
In ionized water, 10-15min is dispersed with stirring with the rotating speed of 200-240r/min, obtains dispersion liquid；
B, modified organic silicone resin, hydroxymethyl cellulose and sodium polycarboxylate are imported in reaction kettle, is warming up to 125-129 DEG C, adds
Heat is simultaneously stirred to react 18-22min, adds toughened fiber and high temperature resistant filler, imports in high-speed shearing machine, keeps the temperature and shears point
1.2-1.5h is dissipated, material one is obtained；
C, Lauryl Alcohol ester, propylene glycol phenylate, sodium polycarboxylate and polymethylphenylsiloxane are added into material one, mixing is equal
It is even, it imports in batch mixer, stirs 30-35min under the rotating speed of 500-600r/min, obtain material two；
D, material two is added in dispersion liquid, stirs 5-8min, adds high-temperature agglomerant, aqueous polyurethane emulsion and mineral
Oil is warming up to 68-73 DEG C, is stirred to react 0.8-1h, after being cooled to room temperature, re-ultrasonic dispersion 15-18min, you can obtain finished product.
5. a kind of preparation method of high-temperature service high-temperature resistant coating according to claim 4, which is characterized in that the step
Suddenly the preparation method of the modified organic silicone resin of b is：By organosilicon preformed polymer solution and epoxy resin in mass ratio 3:2 mixing,
Naphthenate is added, is reacted at 94-96 DEG C, abstraction reaction object is measured, and the gelation time when measuring 200 DEG C is
When 60-100s terminate reaction, then add dimethylbenzene be diluted to solid holdup be 45-55% when, you can obtain modified organic silicon
Resin.
6. a kind of preparation method of high-temperature service high-temperature resistant coating according to claim 5, which is characterized in that described to have
The preparation method of machine silicon pre-polymer solution is：By methltriethoxysilone, that dimethyldichlorosilane is added to dimethylbenzene is molten
In agent, 62 DEG C are heated to, it is 5 that the hydrochloric acid solution for being 30% with mass concentration, which adjusts pH value, adds distilled water, reacts 25min,
Stratification, takes upper solution to be washed to neutrality, and vacuum distillation to solid holdup is 60%, you can it is molten to obtain organosilicon preformed polymer
Liquid.
7. a kind of preparation method of high-temperature service high-temperature resistant coating according to claim 5, which is characterized in that the ring
Alkyl salt zinc naphthenate, calcium naphthenate and cyclic potassium naphthenate in mass ratio 2:1:1 mixes.
8. a kind of preparation method of high-temperature service high-temperature resistant coating according to claim 4, which is characterized in that the step
The toughened fiber of rapid b is Zirconium oxide fibre, alumina fibre, aluminium silicate fiber peacekeeping polycrystalline mullite fibre in mass ratio 5:5:2:
1 mixes.
9. a kind of preparation method of high-temperature service high-temperature resistant coating according to claim 4, which is characterized in that the step
The high temperature resistant filler of rapid b is talcum powder, blanc fixe, mica powder and glass powder in mass ratio 7:3:5:2 mix.
10. a kind of preparation method of high-temperature service high-temperature resistant coating according to claim 4, which is characterized in that described
The high-temperature agglomerant of step d is aluminium dihydrogen phosphate, Ludox and Aluminum sol in mass ratio 1:2:1 mixes.
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