CN110003788A - A kind of weather-proof finishing coat of aqueous one-component nano modification self-cross linking type - Google Patents
A kind of weather-proof finishing coat of aqueous one-component nano modification self-cross linking type Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C209/00—Preparation of compounds containing amino groups bound to a carbon skeleton
- C07C209/68—Preparation of compounds containing amino groups bound to a carbon skeleton from amines, by reactions not involving amino groups, e.g. reduction of unsaturated amines, aromatisation, or substitution of the carbon skeleton
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C221/00—Preparation of compounds containing amino groups and doubly-bound oxygen atoms bound to the same carbon skeleton
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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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/14—Polyurethanes having carbon-to-carbon unsaturated bonds
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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
- C09D5/32—Radiation-absorbing paints
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/48—Stabilisers against degradation by oxygen, light or heat
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
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Abstract
The invention belongs to paint fields, it more particularly to a kind of weather-proof finishing coat of aqueous one-component nano modification self-cross linking type, is grouped as by each group of following parts by weight: 80-100 parts of acrylic acid modified polyurethane lotion, 20-25 parts of nano-titanium dioxide, auxiliary agent 5-10 parts weather-proof, 0.3-0.8 parts of pH adjusting agent, 0.8-1.5 parts of drier, 0.5-1 parts of dispersing agent, 0.6-1.3 parts of defoaming agent, 0.5-1 parts of levelling agent, 8-15 parts of deionized water.Simultaneously added with nano-titanium dioxide and weather-proof auxiliary agent in the weather-proof finishing coat of aqueous one-component nano modification self-cross linking type of the invention, the addition of nano-titanium dioxide not only contributes to improve the properties such as water resistance, resistance to acid and alkali, the corrosion resistance of paint film, the very strong absorption UV resistance of nano-titanium dioxide, also advantageously improve the weatherability of paint film, furthermore, it acts synergistically between nano-titanium dioxide and weather-proof auxiliary agent, the weatherability of paint film can be significantly improved；The modified nano-titanium dioxide of Silane coupling agent KH550 can be better dispersed in system, preferably play the effect of nano-titanium dioxide.
Description
Technical field
The invention belongs to paint fields, and in particular to a kind of weather-proof finishing coat of aqueous one-component nano modification self-cross linking type.
Background technique
Coating is to be coated in the body surface protected or decorated, and can form the continuous thin of firm attachment with coated article
Film, and finishing coat needs test for a long time through climate, such as directly part is touched with pollution mediums such as sunlight, empty gas and waters
It is comprehensive caused by illumination, cold and hot, wind and rain etc. to destroy.Once finishing coat can not be subjected to these tests, there is blistering, crackle, even
Dusting, the problems such as falling off can not then inquire again matrix and provide protection or decoration function, cause to fail.Therefore, the weatherability of finishing coat is
One very important index, decides the service life of finishing coat or even matrix product.
Chinese patent literature CN108300221A discloses a kind of long-acting weather-proof acrylic polyurethane finish paint of engineering machinery,
For double-component acrylic acid polyurethane coating, wherein mian paint component includes high-solid lower-viscosity thermosetting property Hydroxylated acrylic resin, weight
40-65 parts of part；Stearic acid modified polyurethane resin, 12-18 parts of parts by weight；Ferrotitanium coloring pigment, 10-15 parts of parts by weight；Face is filled out
Material, 15-25 parts of parts by weight；Auxiliary agent is conventional amount used, 0.5-2 parts of total weight parts；Environment-friendlyacrylic acrylic acid polyurethane dedicated solvent, weight
Total 7-10 parts of part；Curing agent component includes toluene di-isocyanate(TDI), and 80-90 parts of parts by weight；N-butyl acetate, parts by weight 10-20
Part；Mian paint component and curing agent component are matched by 4: 1 weight ratio, and the acroleic acid polyurethane of mian paint component parts by weight 20% is added
Dedicated solvent is acrylic polyurethane finish paint, prepared by finishing coat to metal substrate and woodwork etc. have good adherence
Property, there is good weatherability, but be wherein added to organic solvent, has a certain impact to environment tool.
Summary of the invention
In order to meet requirement of the finishing coat in terms of environmental protection and weatherability simultaneously, the invention discloses a kind of aqueous one-components to receive
The rice weather-proof finishing coat of modified self-crosslinking type is effectively improved acrylic acid modified poly- by addition nano-titanium dioxide and weather-proof auxiliary agent
The performances such as the water-fast of urethane finishing coat, acid and alkali-resistance, ageing-resistant, significantly improve weatherability.
To achieve the goals above, the present invention adopts the following technical scheme:
A kind of weather-proof finishing coat of aqueous one-component nano modification self-cross linking type, is grouped as by each group of following parts by weight:
80-100 parts of acrylic acid modified polyurethane lotion
20-25 parts of nano-titanium dioxide
Weather-proof auxiliary agent 5-10 parts
0.3-0.8 parts of pH adjusting agent
0.8-1.5 parts of drier
0.5-1 parts of dispersing agent
0.6-1.3 parts of defoaming agent
0.5-1 parts of levelling agent
8-15 parts of deionized water.
Preferably, the partial size of above-mentioned nano-titanium dioxide is 10-50nm.
Preferably, above-mentioned nano-titanium dioxide is silane coupler modified nano-titanium dioxide.
Preferably, above-mentioned silane coupling agent is Silane coupling agent KH550.
Preferably, the structural formula of above-mentioned weather-proof auxiliary agent are as follows:
The weather-proof auxiliary agent the preparation method comprises the following steps:
(1) naphthalidine is heated to melting, and is dehydrated 2-3h at 110-180 DEG C, p-phenylenediamine is added later and to ammonia
Base benzene sulfonic acid (molar ratio of naphthalidine and p-phenylenediamine is 1.5:1, and p-aminobenzene sulfonic acid is appropriate), stirs lower slow heating
It is warming up to 230-240 DEG C of progress condensation reaction, the ammonia water and sulfuric acid absorption generated in reaction process stops after no ammonia is released
It only reacts, being neutralized to pH with soda ash is neutrality, and high-vacuum fractionation steams product after recycling unreacted naphthylamines and p-phenylenediamine
1, condensation-crystallization, reaction equation are as follows:
(2) 4,6-dibenzoyl-1,3- phenylenediamines are heated to melting, and are dehydrated 2-3h at 150-200 DEG C, later
(molar ratio of product 1 and 4,6-dibenzoyl-1,3- phenylenediamines is 1:1.5, to ammonia for addition product 1 and p-aminobenzene sulfonic acid
Base benzene sulfonic acid is appropriate), it stirs lower slow heating and is warming up to 230-240 DEG C of progress condensation reaction, generated in reaction process
Ammonia water and sulfuric acid absorption stop reaction after no ammonia is released, and being neutralized to pH with soda ash is neutrality, and high-vacuum fractionation, recycling is not
The product 1 and 4 of reaction after 6-dibenzoyl-1,3- phenylenediamines, steams product 2, condensation-crystallization, reaction equation are as follows:
(3) product 2 is heated to melting, and is dehydrated 2-3h at 160-220 DEG C, 4,4 '-diamino hexichol are added later
(product 2 and 4, the molar ratio of 4 '-diaminodiphenyl-methanes are 1:1.5, p-aminobenzene sulfonic acid for methylmethane and p-aminobenzene sulfonic acid
It is appropriate), stir lower slow heating and be warming up to 240-250 DEG C of progresss condensation reaction, the ammonia water generated in reaction process with
Sulfuric acid absorption stops reaction after no ammonia is released, and being neutralized to pH with soda ash is neutrality, and high-vacuum fractionation recycles unreacted production
Object 2 and 4 after 4 '-diaminodiphenyl-methanes, steams product 3 (i.e. weather-proof auxiliary agent), condensation-crystallization, reaction equation are as follows:
Preferably, above-mentioned pH adjusting agent is ammonium hydroxide, monoethanolamine, diethanol amine, triethanolamine, 2- amino-2-methyl-
One or more of 1- propyl alcohol.
Preferably, above-mentioned drier is organotin drier.
Preferably, the above-mentioned weather-proof finishing coat of aqueous one-component nano modification self-cross linking type the preparation method comprises the following steps:
(1) acrylic acid modified polyurethane lotion and deionized water are stirred evenly in a reservoir, nano-silica is then added
Change titanium, stirs 5-15min, mixing speed 600-800r/min at 30-50 DEG C；
(2) weather-proof auxiliary agent, pH adjusting agent, dispersing agent, defoaming agent and levelling is added in the mixed liquor obtained to step (1)
Agent stirs 5-10min, mixing speed 400-500r/min at 30-50 DEG C；
(3) mixed liquor that step (2) obtain is down to room temperature, drier is added, stir 3-5min, mixing speed 400-
500r/min obtains the weather-proof finishing coat of water-based mono-component nano modification self-cross linking type.
The present invention has following the utility model has the advantages that (1) weather-proof face of aqueous one-component nano modification self-cross linking type of the invention
Simultaneously added with nano-titanium dioxide and weather-proof auxiliary agent in paint, the addition of nano-titanium dioxide not only contributes to improve the resistance to of paint film
The properties such as aqueous, resistance to acid and alkali, corrosion resistance, the very strong absorption UV resistance of nano-titanium dioxide, also help and mention
The weatherability of high paint film can significantly improve the weather-proof of paint film in addition, acting synergistically between nano-titanium dioxide and weather-proof auxiliary agent
Property；
(2) the modified nano-titanium dioxide of Silane coupling agent KH550 can be better dispersed in system, preferably be sent out
Wave the effect of nano-titanium dioxide；
(3) contain benzophenone structural in weather-proof auxiliary agent of the invention, can consumingly absorb ultraviolet light, purple is greatly decreased
Outside line is destroyed caused by paint film, the N- phenyl-α-naphthylamine structure in weather-proof auxiliary agent to oxygen air and heat and deflect caused aging,
Fatigue can play effective protective action, also there is certain inhibiting effect, the diamino hexichol in weather-proof auxiliary agent to poisonous metal
Methylmethane structure has antioxygen and aging safeguard function, has good resistance to chemical reagents, water resistance and resistance to heat distorsion, is added
Weather-proof auxiliary agent can significantly improve the water resistance of paint film, resistance to ag(e)ing etc.；
(4) weather-proof auxiliary agent has the molecular structure increased, compared with micromolecule additive, is easy to stablize in system, long
Phase plays a role, and is not easy to be precipitated, to will not adversely affect to the basic structure of system, in addition, containing on weather-proof auxiliary agent
Amino can occur chemical reaction with matrix resin and form firm chemical bond, play the role of long-lasting protection.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is the nmr spectrum of product 1 of the present invention.
Fig. 2 is the nmr spectrum of product 2 of the present invention.
Fig. 3 is the nmr spectrum of product 3 (i.e. weather-proof auxiliary agent) of the present invention.
Specific embodiment
Presently in connection with embodiment, the present invention is described in further detail.
The weather-proof finishing coat of aqueous one-component nano modification self-cross linking type the preparation method comprises the following steps:
(1) acrylic acid modified polyurethane lotion and deionized water are stirred evenly in a reservoir, nano-silica is then added
Change titanium, stirs 5-15min, mixing speed 600-800r/min at 30-50 DEG C；
(2) weather-proof auxiliary agent, pH adjusting agent, dispersing agent, defoaming agent and levelling is added in the mixed liquor obtained to step (1)
Agent stirs 5-10min, mixing speed 400-500r/min at 30-50 DEG C；
(3) mixed liquor that step (2) obtain is down to room temperature, drier is added, stir 3-5min, mixing speed 400-
500r/min obtains the weather-proof finishing coat of water-based mono-component nano modification self-cross linking type.
Fig. 1-3 is the nmr spectrum of the present invention each product generated during preparing weather-proof auxiliary agent.
Fig. 1 is the nmr spectrum of product 1, and nuclear magnetic data is as follows: δ=9.08~9.17 (a, 1H), δ=8.15~
8.22 (b, 2H), δ=7.79~7.82 (c, 1H), δ=7.49~7.63 (d, 4H), δ=7.01~7.04 (e, 2H), δ=
6.05~6.08 (f, 2H), δ=4.51~5.53 (g, 2H).Test obtained each proton uptake peak and its integrated value and product 1
Middle proton is completely the same, illustrates to have obtained product 1.
Fig. 2 is the nmr spectrum of product 2, and nuclear magnetic data is as follows: δ=11.70~11.72 (a, 1H), δ=9.10~
9.12 (b, 1H), δ=6.65~8.13 (c, 2 structure of product in phenyl ring), δ=6.26~6.28 (d, 2H).Test obtains each
Proton uptake peak and its integrated value and proton in product 2 are completely the same, illustrate to have obtained product 2.
Fig. 3 is the nmr spectrum of product 3 (i.e. weather-proof auxiliary agent), and nuclear magnetic data is as follows: δ=12.26~12.28 (a,
1H), δ=11.68~11.71 (b, 1H), δ=9.10~9.12 (c, 1H), δ=6.44~8.13 (d, benzene in 3 structure of product
Ring), δ=4.90~4.92 (e, 2H), δ=3.81~3.83 (f, 2H).Test obtained each proton uptake peak and its integrated value
It is completely the same with proton in product 3 (i.e. weather-proof auxiliary agent), illustrate to have obtained product 3 (i.e. weather-proof auxiliary agent).
Embodiment 1
The weather-proof finishing coat of aqueous one-component nano modification self-cross linking type, be grouped as by each group of following parts by weight: acrylic acid changes
Property 90 parts of polyaminoester emulsion, 22 parts of KH550 modified nano-titanium dioxide, 8 parts of weather-proof auxiliary agent, 0.5 part of ammonium hydroxide, stannous octoate 1.2
Part, 700 0.8 parts of TEGO, 900 1 parts of TEGO, 450 0.7 parts of TEGO, 11 parts of deionized water.
Embodiment 2
The weather-proof finishing coat of aqueous one-component nano modification self-cross linking type, be grouped as by each group of following parts by weight: acrylic acid changes
Property 80 parts of polyaminoester emulsion, 20 parts of KH550 modified nano-titanium dioxide, 10 parts of weather-proof auxiliary agent, 0.2 part of monoethanolamine, diethanol
0.1 part of amine, 655 0.7 parts of TEGO, 980 0.6 parts of TEGO, 400 0.5 parts of TEGO, is gone 0.8 part of dibutyl tin dilaurate
8 parts of ionized water.
Embodiment 3
The weather-proof finishing coat of aqueous one-component nano modification self-cross linking type, be grouped as by each group of following parts by weight: acrylic acid changes
Property 100 parts of polyaminoester emulsion, 25 parts of KH550 modified nano-titanium dioxide, 5 parts of weather-proof auxiliary agent, 0.8 part of triethanolamine, two laurels
1.5 parts of sour dibutyl tin, 651 0.5 parts of TEGO, 970 1.3 parts of TEGO, 410 1 parts of TEGO, 15 parts of deionized water.
Embodiment 4
The weather-proof finishing coat of aqueous one-component nano modification self-cross linking type, be grouped as by each group of following parts by weight: acrylic acid changes
Property 90 parts of polyaminoester emulsion, 20 parts of KH550 modified nano-titanium dioxide, 7 parts of weather-proof auxiliary agent, 2-amino-2-methyl-1-propanol
0.6 part, 1 part of stannous octoate, 652 0.8 parts of TEGO, 960 1 parts of TEGO, 410 0.7 parts of TEGO, 10 parts of deionized water.
Comparative example 1
The weather-proof finishing coat of aqueous one-component nano modification self-cross linking type, be grouped as by each group of following parts by weight: acrylic acid changes
Property 90 parts of polyaminoester emulsion, 8 parts of weather-proof auxiliary agent, 0.5 part of ammonium hydroxide, 1.2 parts of stannous octoate, 700 0.8 parts of TEGO, TEGO 900
1 part, 450 0.7 parts of TEGO, 11 parts of deionized water.
Comparative example 2
The weather-proof finishing coat of aqueous one-component nano modification self-cross linking type, be grouped as by each group of following parts by weight: acrylic acid changes
Property 90 parts of polyaminoester emulsion, 22 parts of KH550 modified nano-titanium dioxide, 0.5 part of ammonium hydroxide, 1.2 parts of stannous octoate, TEGO 700
0.8 part, 900 1 parts of TEGO, 450 0.7 parts of TEGO, 11 parts of deionized water.
Comparative example 3
The weather-proof finishing coat of aqueous one-component nano modification self-cross linking type, be grouped as by each group of following parts by weight: acrylic acid changes
Property 90 parts of polyaminoester emulsion, 22 parts of KH550 modified nano-titanium dioxide, 4,6-3 parts of dibenzoyl-1,3- phenylenediamines, product 1
3 parts, 2 parts of 4,4 '-diaminodiphenyl-methane, 0.5 part of ammonium hydroxide, 1.2 parts of stannous octoate, 700 0.8 parts of TEGO, TEGO 9001
Part, 450 0.7 parts of TEGO, 11 parts of deionized water.
Comparative example 4
The weather-proof finishing coat of aqueous one-component nano modification self-cross linking type, be grouped as by each group of following parts by weight: acrylic acid changes
Property 90 parts of polyaminoester emulsion, 22 parts of KH550 modified nano-titanium dioxide, 4,6-8 parts of dibenzoyl-1,3- phenylenediamines, ammonium hydroxide
0.5 part, 1.2 parts of stannous octoate, 700 0.8 parts of TEGO, 900 1 parts of TEGO, 450 0.7 parts of TEGO, 11 parts of deionized water.
Comparative example 5
The weather-proof finishing coat of aqueous one-component nano modification self-cross linking type, be grouped as by each group of following parts by weight: acrylic acid changes
90 parts of polyaminoester emulsion of property, 22 parts of KH550 modified nano-titanium dioxide, 18 parts of product, 0.5 part of ammonium hydroxide, 1.2 parts of stannous octoate,
700 0.8 parts of TEGO, 900 1 parts of TEGO, 450 0.7 parts of TEGO, 11 parts of deionized water.
Comparative example 6
The weather-proof finishing coat of aqueous one-component nano modification self-cross linking type, be grouped as by each group of following parts by weight: acrylic acid changes
Property 90 parts of polyaminoester emulsion, 22 parts of KH550 modified nano-titanium dioxide, 8 parts of 4,4 '-diaminodiphenyl-methane, ammonium hydroxide 0.5
Part, 1.2 parts of stannous octoate, 700 0.8 parts of TEGO, 900 1 parts of TEGO, 450 0.7 parts of TEGO, 11 parts of deionized water.
The performance test of paint film prepared by embodiment and comparative example is shown in Table 1.
Table 1
Taking the above-mentioned ideal embodiment according to the present invention as inspiration, through the above description, relevant staff is complete
Various changes and amendments can be carried out without departing from the scope of the technological thought of the present invention' entirely.The technology of this invention
Property range is not limited to the contents of the specification, it is necessary to which the technical scope thereof is determined according to the scope of the claim.
Claims (8)
1. a kind of weather-proof finishing coat of aqueous one-component nano modification self-cross linking type, it is characterised in that: by each component of following parts by weight
Composition:
80-100 parts of acrylic acid modified polyurethane lotion
20-25 parts of nano-titanium dioxide
Weather-proof auxiliary agent 5-10 parts
0.3-0.8 parts of pH adjusting agent
0.8-1.5 parts of drier
0.5-1 parts of dispersing agent
0.6-1.3 parts of defoaming agent
0.5-1 parts of levelling agent
8-15 parts of deionized water.
2. the weather-proof finishing coat of aqueous one-component nano modification self-cross linking type as described in claim 1, it is characterised in that: the nanometer
The partial size of titanium dioxide is 10-50nm.
3. the weather-proof finishing coat of aqueous one-component nano modification self-cross linking type as described in claim 1, it is characterised in that: the nanometer
Titanium dioxide is silane coupler modified nano-titanium dioxide.
4. the weather-proof finishing coat of aqueous one-component nano modification self-cross linking type as claimed in claim 3, it is characterised in that: the silane
Coupling agent is Silane coupling agent KH550.
5. the weather-proof finishing coat of aqueous one-component nano modification self-cross linking type as described in claim 1, it is characterised in that: described weather-proof
The structural formula of auxiliary agent are as follows:
6. the weather-proof finishing coat of aqueous one-component nano modification self-cross linking type as described in claim 1, it is characterised in that: the pH tune
Section agent is one or more of ammonium hydroxide, monoethanolamine, diethanol amine, triethanolamine, 2-amino-2-methyl-1-propanol.
7. the weather-proof finishing coat of aqueous one-component nano modification self-cross linking type as described in claim 1, it is characterised in that: it is described urge it is dry
Agent is organotin drier.
8. the weather-proof finishing coat of aqueous one-component nano modification self-cross linking type as described in claim 1, it is characterised in that: described aqueous
The weather-proof finishing coat of single-component nanometer modified self-crosslinking type the preparation method comprises the following steps:
(1) acrylic acid modified polyurethane lotion and deionized water are stirred evenly in a reservoir, nano-titanium dioxide are then added,
5-15min, mixing speed 600-800r/min are stirred at 30-50 DEG C；
(2) weather-proof auxiliary agent, pH adjusting agent, dispersing agent, defoaming agent and levelling agent, 30- is added in the mixed liquor obtained to step (1)
5-10min, mixing speed 400-500r/min are stirred at 50 DEG C；
(3) mixed liquor that step (2) obtain is down to room temperature, drier is added, stir 3-5min, mixing speed 400-
500r/min obtains the weather-proof finishing coat of water-based mono-component nano modification self-cross linking type.
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| CN201910244159.0A CN110003788B (en) | 2019-03-28 | 2019-03-28 | Water-based single-component nano-modified self-crosslinking weather-resistant finish paint |
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| CN201910244159.0A CN110003788B (en) | 2019-03-28 | 2019-03-28 | Water-based single-component nano-modified self-crosslinking weather-resistant finish paint |
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| CN110003788B CN110003788B (en) | 2021-03-02 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111978811A (en) * | 2020-08-07 | 2020-11-24 | 珠海展辰新材料股份有限公司 | Water-based single-component top-coat paint and preparation method thereof |
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| CN113667365A (en) * | 2021-07-20 | 2021-11-19 | 安徽朗凯奇防水科技股份有限公司 | Acid rain resistant exterior wall paint and preparation method thereof |
| CN114989677A (en) * | 2022-01-24 | 2022-09-02 | 山东嘉美泰新材料有限公司 | Super-weather-resistant high-gloss water-based polymer material composition and coating preparation method thereof |
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| CN110003788B (en) | 2021-03-02 |
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