CN106047163A - Water-soluble organic silicon coating - Google Patents
Water-soluble organic silicon coating Download PDFInfo
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- CN106047163A CN106047163A CN201610503793.8A CN201610503793A CN106047163A CN 106047163 A CN106047163 A CN 106047163A CN 201610503793 A CN201610503793 A CN 201610503793A CN 106047163 A CN106047163 A CN 106047163A
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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
- C09D187/00—Coating compositions based on unspecified macromolecular compounds, obtained otherwise than by polymerisation reactions only involving unsaturated carbon-to-carbon bonds
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- C—CHEMISTRY; METALLURGY
- 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
- C08G81/00—Macromolecular compounds obtained by interreacting polymers in the absence of monomers, e.g. block polymers
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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
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/02—Organic and inorganic ingredients
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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
-
- 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
- C08K3/34—Silicon-containing compounds
- C08K3/36—Silica
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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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- 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
-
- 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
Abstract
The invention provides a water-soluble organic silicon coating which comprises aqueous organic silicon resin, nano silicon dioxide, titanium dioxide, an additive and the balance of water, wherein the weight ratio of the aqueous organic silicon resin to the nano silicon dioxide to the titanium dioxide to the additive is (70-80):(1-5):(0.5-1):(5-20), wherein the nano silicon dioxide is powder of which the average particle size is 100-300 nanometers; the fineness of the titanium dioxide is greater than 6000 meshes; and the aqueous organic silicon resin is modified by using polyester and epoxy resin and has the acid value of 25+/-10mgKOH/g. The prepared water-soluble organic silicon coating is relatively high in thermal hardness.
Description
Technical field
The invention belongs to water paint field, be specifically related to a kind of water-soluble organic silicon coating.
Background technology
Silicones is to have highly cross-linked cancellated polysiloxane, has the double of organic resin and inorganic material concurrently
Weight characteristic, has the physics of uniqueness, chemical property, and organic siliconresin is that (organosilicon is broadly divided into silicon to one of 4 big organosilicon materials
Oil, silicone rubber, silicones and the big class of silane coupler four), there is general organic resin unapproachable high temperature resistant, weather-proof and resistance to
Chemicals, this year, the research work progress of organic siliconresin was quite fast, and following achievement is the most industrially used.
In recent years, due to the deterioration of ecological environment, environmental conservation is more and more paid close attention to by the world.Every country is all formulated
Relevant laws and regulations strictly limit the discharge of organic volatile (VOC) in coating.The Chinese government also promulgates in December, 1989
Law on Environmental Protection and " green " mark regulation etc., to limit the discharge of VOC.Solvent based coating contains a large amount of VOC composition, no
Only pollute environment waste resource and also endanger the health of people.Oligosaprobic water paint, photocureable coating, powdery paints and Gao Gu
Body divides coating to become the developing direction of coating.For water paint is relative to other low contamination coating, skill can be realized owing to having
The advantage such as art approach is many, wide application, safety, construction are relatively easy form headed by selection kind, the most vast coating scientific and technical personnel
Paying close attention to and the favor of coating user, VOC is mainly derived from disperse medium and the film forming matter of coating, sending out of water-base resin production technology
Exhibition so that water paint progressively replaces solvent based coating to be possibly realized.
CN103897197A discloses the preparation method of a kind of organosilicon modified polyester epoxy resin, comprises the following steps:
A () provides the mixture of following component: hydroxy radical content 8～the pet reaction thing of 17.1%；Polysiloxanes；Hydroxyl and epoxy official
The epoxy resin of energy base；Optional polymerisation catalysts；Wherein, described polysiloxanes with the weight ratio of pet reaction thing is
(30～90): (10～70)；The weight of the epoxy resin of described hydroxyl and epoxide functional groups accounts for described polysiloxanes and polyester
The 5～15% of the gross weight of reactant；Described polymerisation catalysts accounts for the gross weight of described polysiloxanes and pet reaction thing
0～0.5%；B () described mixture reacts 3～4 hours under the reaction temperature of 120～170 DEG C, obtain of the present invention
Organosilicon modified polyester epoxy resin.This invention combines the advantage of polyester and epoxy resin, has the heat-resisting yellowing resistance of excellence
Can, but its coating flexibility prepared is poor, and do not possess water solublity, it is unfavorable for green environmental friendly coatings.
CN104559565A discloses a kind of nanometer titanium dioxide silicon coating, comprises following ingredient, water soluble acrylic acid tree
45 parts of fat, tetramethylolmethane 5 parts, bentonite 4 parts, butyl acetate 5 parts, mica powder 2 parts, aluminium triphosphate 1 part, nano silicon
3 parts, zinc phosphate 4 parts, silica flour 8 parts, titanium dioxide 1 part, Organic fluoride epoxy resin 10 parts, epoxy resin 40 parts, organic siliconresin
20 parts, segregation two fluororesin 4 parts, dimethylbenzene 1 part.Water paint prepared by this invention has preferable decorative effect, but heat is hard
Degree and other physical properties are relatively poor.
Summary of the invention
For solving the problems referred to above, the present invention provides a kind of water-soluble organic silicon coating, comprises waterborne organic silicon resin, nanometer
Silicon dioxide, titanium dioxide and auxiliary agent, wherein, the weight ratio of waterborne organic silicon resin, nano silicon, titanium dioxide and auxiliary agent
For: 70-80:1-5:0.5-1:5-20, its surplus is water, and described nano silicon mean diameter is the powder of 100-300 nanometer
End；Titanium dioxide fineness is more than 6000 mesh；Described waterborne organic silicon resin is to be 25 with the acid number after polyester, epoxy resin modification
The waterborne organic silicon resin of ± 10mgKOH/g.
The present invention also provides for the preparation method of described water-soluble organic silicon coating: by waterborne organic silicon resin, nano-silica
SiClx is blended 0.5-1 hour at high shear rates, then disperses 0.5-1 hour with ultrasound wave, obtains water nano dioxy is blended
SiClx resin；Add nertralizer after being dissolved by above-mentioned blended water-based nano silicon dioxide resin, drip under high-speed stirred effect
Deionized water, until the white translucent emulsion of solution obtains dispersion liquid；Titanium dioxide and auxiliary agent are added in above-mentioned dispersion liquid, will
Mixture regulation is to alkalescence, and its pH value is 7.2-8.1, obtains water-soluble organic silicon coating.
The present invention also provides for the preparation method of waterborne organic silicon resin, comprise the steps: by trihydroxylic alcohol, dihydroxylic alcohols, two
Unit's acid and epoxy resin add in reactor, will first be heated to 165-180 DEG C, add antioxygen after material dissolution is incubated 1 hour
Agent, controls temperature at 180-220 DEG C, reacts after being less than 8.0 to acid number, and addition silicones intermediate, catalyst react,
Reaction temperature is 160-200 DEG C, and the response time is 3-4 hour, the dropping trimellitic anhydride when reacting acid number less than 8mgKOH/g
Carry out aqueous end-blocking, keep reaction temperature, react 1-2 hour, reacted when acid number is 25 ± 10mgKOH/g, be prepared into
To waterborne organic silicon resin.
Preferably, described epoxy resin, trihydroxylic alcohol, dihydroxylic alcohols, binary acid, antioxidant, catalyst, trimellitic anhydride and silicon
The weight ratio of resin intermediate is: 10-20:20-30:20-30:30-40:0.2-0.6:0.1-0.8:5-10:60-80.
Preferably, one or both during described trihydroxylic alcohol is trimethylolpropane and trimethylolethane；Described binary
Alcohol is one or both in neopentyl glycol and diglycol；Described binary acid is in p-phthalic acid and ethanedioic acid
Plant or two kinds.
Preferably, described catalyst is butyl titanate；Described antioxidant is in triphenyl phosphate and triphenyl phosphite
One.
Preferably, the one during described auxiliary agent comprises thickening agent, dispersant, film former, defoamer and levelling agent or one
Above.Thickening agent can increase the viscosity of latex, can select according to real needs, and described thickening agent can be hydroxylmethyl cellulose
One or more in element, carboxymethyl cellulose, sodium polyacrylate, polyvinyl alcohol and hydroxyethyl cellulose；Dispersant can be three
One or more in polyphosphate sodium, sodium tetrapolyphosphate and sodium hexameta phosphate；Coalescents can be ethylene glycol, ethylene glycol fourth
One or more in ether, ethylene glycol, propylene glycol.
Beneficial effects of the present invention:
(1) present invention uses particle diameter to be 100-300 mesh nano silicon and the 6000 above titanium dioxides of mesh, simultaneously with spy
Different technique combines, and the water-soluble organic silicon coating that rational formula, ratio and method prepare has preferable water solublity, resists
Impact property, resistance to water and red hardness.
(2) the water-soluble organic silicon coating that prepared by the present invention, uses the waterborne organic silicon that trihydroxylic alcohol, dihydroxylic alcohols are mixed and modified
Resin, not only makes coating have preferable water solublity, meanwhile, trihydroxylic alcohol and the cooperation of dihydroxylic alcohols, makes resin not only possess preferably
Red hardness, moreover it is possible to keep impact resistance.
(3) the water-soluble organic silicon coating that prepared by the present invention, possesses the excellent of organosilicon, epoxy resin and polyester resin
Optimum energy, uses rational ratio formula, coordinates nano silicon to possess preferable heat resistance, the nanometer that the present invention selects
Silicon dioxide is sufficiently mixed with modified waterborne organic silicon resin under ultrasound wave disperses, and particle diameter is reasonable, and consumption proportion is reasonable,
Avoid nano silicon reunion in resin, give the advantage that coating hardness is good, wearability is high.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with embodiment, to the present invention
Further describe, but the protection domain of application claims is not limited to embodiment.
The assay method of the present invention is according to following standard:
1. acid resistance and alkali resistance
Edge sealing can be carried out by good edge sealing paint with from dryness, then be immersed in 5% aqueous hydrochloric acid solution by 2/3rds of sample
Keep 24 hours with in 5%Na OH aqueous solution.Take out sample afterwards and wash away acid solution or the alkali liquor of residual with distilled water, and
The water of residual is sucked with filter paper.Whether observe film to have and comes off, bubbles, cracking, variable color etc. manifests, if nothing, passes through.
2. the mensuration of adhesive force
Film is referred to as adhesive force to the adhesion of ground, measures by GB1720-70 method.Use adherometer, press
Evaluate according to the film integrity degree in the range of cycloid cut, with series expression.The film model done solid work is fixed on analyzer,
By shaking rocking handle clockwise after adjusting syringe needle, cycloid cut standard drawing a length of 7～8cm.Take out model, remove with painting brush
Paint bits on cut, observe cut with 4 times of magnifieres and grade.1 grade preferably, and 7 grades of adhesive force are worst.
3. pliability measures
According to the method for national standard " test of film pliability " (GB/T1731-1993), under conditions of constant temperature and humidity,
By the strength of thumb in 2～3s, bend model around rod, after taking off, observe whether film has crackle or stripping with four times of magnifieres
The phenomenon such as fall.With the mandrel rod not causing diameter that paint film destroys minimum represent film pliability (totally 7 diameters are respectively 1mm,
2mm,3mm,4mm,5mm,10mm,15mm)。
4. acid value measuring
Acid number is defined as neutralizing the milligram number of the potassium hydroxide that 1 gram of resin is consumed, and can embody carboxyl in resin
Content.Assay method: add about 0.5g organic siliconresin in taper, adds about 30ml acetone soln dissolved polyester tree
Fat, adds 2-3 and drips phenolphthalein indicator, with the KOH solution titration demarcated, the volume of record KOH solution used, measures and takes for three times
Meansigma methods.
5. water solublity test
After preparing aqueous dispersion, observe after standing 1 day, if dispersion presents pellucidity, then good water solubility；As
Really some is muddy, then water solublity is general；If sunk to the bottom or molten thing, then poorly water-soluble.
6. storage stability test
Stand after 3 months under room temperature, if the state of aqueous dispersion with 3 months before identical, then storage stability is good；If
Aqueous dispersion sinks to the bottom appearance, but easily stirs with Glass rod, then stability is general；If aqueous dispersion is layered completely, then it is steady
Qualitative difference.
7. pencil hardness test
Mitsubishi pencil, the method for inspection and standard is used to use GB GB/T 6739-2006 to measure；
8. red hardness test
Sample is electrified heating, treats that sample temperature rises to required temperature, then control voltage, keep temperature steady
Fixed, the method for testing with reference to pencil hardness is tested；
9. impact resistance
Resistance to impact is referred to as impact strength, i.e. refers to that the film being applied on base material is made by the impact of two-forty gravity
With, generation rapid deformation is without ability that is cracking or that come off from base material, according to GB/T 1732-93 " the resistance to punching of paint film
Hit algoscopy " standard-required measure the shock resistance of film, weight weight is 1t, can not cause destruction paint film
Highly characterizing greatly, unit is cm.
10. resistance to water
Carry out referring generally to GB1733-93 paint film resistance to water algoscopy, soaking at room temperature method described in not employing standard, and
By infusion method of heating, soak under conditions of 40 ± 1 DEG C, observe paint film with or without the foaming phenomena that turns white.
11. anti-wear performance tests
Product is placed on the resistance to grinding machine that Du Pont is special, applies the pressure of 4.9kg, add a small amount of liquid detergent and water,
Use 3M-7447# scouring pad, change a scouring pad every 250 times.Show money or valuables one carries unintentionally with 10 matrixes and terminate test, calculate total degree.
12. gloss
Determining instrument uses REFO-60MINI type gloss meter, the method for inspection and standard to use GB GB/T9754-2007 to survey
Fixed.
The preparation of cured paint film: paint film sample is prepared according to GB1727-92 " paint film is typically prepared method ".This standard gauge
Determine to prepare the material of general paint film, the surface process of base plate, plate-making method, dry and status adjustment, the constant temperature and humidity of paint film
Condition and film thickness etc..
Embodiment 1
The preparation of waterborne organic silicon resin: 20g trihydroxylic alcohol, 30g dihydroxylic alcohols, 35g binary acid and 15g epoxy resin are added
In reactor, will first be heated to 170 DEG C, after material dissolution is incubated 1 hour, adds 0.4g triphenyl phosphate, temperature is controlled
200 DEG C, reacting after being less than 8.0 to acid number, addition 75g methyl phenyl silicone resin intermediate, 0.5g butyl titanate react,
Reaction temperature is 180 DEG C, and the response time is 4 hours, and when reacting acid number less than 8mgKOH/g, dropping 5g trimellitic anhydride is carried out
Aqueous blocks, and keeps reaction temperature, reacts 2 hours, reacted when acid number is 25 ± 10mgKOH/g, prepared aqueous
Organic siliconresin A.
The preparation of water-soluble organic silicon coating: (particle diameter is 200 by 70g waterborne organic silicon Resin A, 4g nano silicon
The powder of nanometer) it is blended at high shear rates 1 hour, then disperse 1 hour with ultrasound wave, obtain water nano titanium dioxide is blended
Silicones；By adding triethylamine after above-mentioned blended water-based nano silicon dioxide resin acetone solution, under high-speed stirred effect
Dropping deionized water, until the white translucent emulsion of solution obtains dispersion liquid；By 10g titanium dioxide (fineness is 7000 mesh) and 5g
Sodium tripolyphosphate, 5g ethylene glycol add in above-mentioned dispersion liquid, and by mixture regulation to alkalescence, its pH value is 7.2-8.1,
To water-soluble organic silicon coating A.
Embodiment 2
The preparation of waterborne organic silicon resin: 25g trihydroxylic alcohol, 25g dihydroxylic alcohols, 40g binary acid and 10g epoxy resin are added
In reactor, will first be heated to 170 DEG C, after material dissolution is incubated 1 hour, adds 0.3g triphenyl phosphate, temperature is controlled
200 DEG C, reacting after being less than 8.0 to acid number, addition 75g methyl phenyl silicone resin intermediate, 0.5g butyl titanate react,
Reaction temperature is 180 DEG C, and the response time is 4 hours, and when reacting acid number less than 8mgKOH/g, dropping 5g trimellitic anhydride is carried out
Aqueous blocks, and keeps reaction temperature, reacts 2 hours, reacted when acid number is 25 ± 10mgKOH/g, prepared aqueous
Organic siliconresin B.
The preparation of water-soluble organic silicon coating: (particle diameter is 200 by 75g waterborne organic silicon resin B, 1g nano silicon
The powder of nanometer) it is blended at high shear rates 0.5 hour, then disperse 1 hour with ultrasound wave, obtain water nano dioxy is blended
SiClx resin；By adding triethylamine after above-mentioned blended water-based nano silicon dioxide resin acetone solution, in high-speed stirred effect
Lower dropping deionized water, until the white translucent emulsion of solution obtains dispersion liquid；By 15g titanium dioxide (fineness is 6500 mesh) and
10g sodium tripolyphosphate, 5g ethylene glycol, 5g hydroxymethyl cellulose add in above-mentioned dispersion liquid, by mixture regulation to alkalescence,
Its pH value is 7.2-8.1, obtains water-soluble organic silicon coating B.
Comparative example 1
Compared with Example 1, in comparative example 1, the particle diameter of nano silicon is 50 nanometers, remaining component and consumption and reality
Executing example 1 identical, remaining technique is same as in Example 1, obtains water-soluble organic silicon coating A1.
Comparative example 2
Compared with Example 1, water-based nano silicon dioxide resin is blended in comparative example 1 and does not use ultrasonic Treatment, remaining
Component and consumption are same as in Example 1, and remaining technique is same as in Example 1, obtain water-soluble organic silicon coating A2.
Comparative example 3
Compared with Example 1, in comparative example 1, the ratio of waterborne organic silicon resin, nano silicon and titanium dioxide does not exists
In the range of this programme, the consumption of waterborne organic silicon resin being adjusted to 60g, the consumption of nano silicon is adjusted to 8g, titanium white
The consumption of powder is adjusted to 30g, and remaining component and consumption are same as in Example 1, and remaining technique is same as in Example 1, obtains water-soluble
Property organosilicon coating A3.
Comparative example 4
Compared with Example 1, comparative example 1 is removed and prepares waterborne organic silicon resin process, use standard aqueous organosilicon
Resin (containing methoxyl group and phenyl polysiloxane), remaining component and consumption are same as in Example 1, and remaining technique is same as in Example 1,
Obtain water-soluble organic silicon coating A4.
Effect example
Above-mentioned waterborne organic silicon coating A (being called for short coating A), waterborne organic silicon coating B (being called for short coating B), waterborne organic silicon
Coating A1 (being called for short coating A1), waterborne organic silicon coating A2 (being called for short coating A2), waterborne organic silicon coating A3 (being called for short coating A3)
Performance such as table 1 with waterborne organic silicon coating A4 (being called for short coating A4).
Table 1
Coating A and coating B that as can be seen from Table 1 prepared by the present invention program possess preferable performance, and not only red hardness is high
It is also equipped with preferable pliability and impact resistance, resistance to acids and bases and resistance to water preferable；Nano silicon in comparative example 1
Particle diameter is 50 nanometers, owing to particle diameter is bigger so that it is dispersion effect is bad, with in formula remaining component coordinate think undesirable, phase
To resistance to acids and bases and storage stability etc. poor；After mixed method is used directly mixing by comparative example 2, nano-silica can be made
SiClx easily separates out, and the dispersion liquid of preparation is unstable, the poor-performing such as relative wearability, storage stability and red hardness；Right
After changing the ratio of waterborne organic silicon resin, nano silicon and titanium dioxide in ratio 3, various aspects of performance is the most poor, nanometer
The consumption of silicon dioxide is for organic siliconresin, if addition is very few, the lifting for performance is inconspicuous, if addition
Too much, affecting water solublity, other performances cannot guarantee that, the ratio of waterborne organic silicon resin, nano silicon and titanium dioxide
If the most in the reasonable scope, the bad good performance that can not reach of conformability can be caused, even can affect resin original surely
Qualitative.
In sum, the present invention program, formula proportion is reasonable, and preparation method is reasonable, the waterborne organic silicon coating tool of preparation
Standby multiple premium properties.
The announcement of book and teaching according to the above description, those skilled in the art in the invention can also be to above-mentioned embodiment party
Formula changes and revises.Therefore, the invention is not limited in detailed description of the invention disclosed and described above, to invention
A little modifications and changes should also be as falling in the scope of the claims of the present invention.Although additionally, this specification employing
Some specific terms, but these terms are merely for convenience of description, and the present invention does not constitute any restriction.
Claims (6)
1. a water-soluble organic silicon coating, it is characterised in that comprise waterborne organic silicon resin, nano silicon, titanium dioxide
And auxiliary agent, wherein, the weight ratio of waterborne organic silicon resin, nano silicon, titanium dioxide and auxiliary agent is: 70-80:1-5:0.5-
1:5-20, its surplus is water, and described nano silicon mean diameter is the powder of 100-300 nanometer；Described titanium dioxide fineness
It is more than 6000 mesh；Described waterborne organic silicon resin is to be 25 ± 10mgKOH/g's with the acid number after polyester, epoxy resin modification
Waterborne organic silicon resin,
The preparation method of described water-soluble organic silicon coating is: by waterborne organic silicon resin, nano silicon in high shear speed
It is blended 0.5-1 hour under rate, then disperses 0.5-1 hour with ultrasound wave, obtain water-based nano silicon dioxide resin is blended；By above-mentioned
It is blended after water-based nano silicon dioxide resin dissolves and adds nertralizer, under high-speed stirred effect, drip deionized water, until molten
The white translucent emulsion of liquid obtains dispersion liquid；Titanium dioxide and auxiliary agent are added in above-mentioned dispersion liquid, mixture is regulated to alkali
Property, its pH value is 7.2-8.1, obtains water-soluble organic silicon coating.
A kind of water-soluble organic silicon coating the most according to claim 1, it is characterised in that described waterborne organic silicon resin
Preparation method comprises the steps: to add in reactor trihydroxylic alcohol, dihydroxylic alcohols, binary acid and epoxy resin, will first be heated to
165-180 DEG C, after material dissolution is incubated 1 hour, adds antioxidant, temperature is controlled at 180-220 DEG C, react little to acid number
After 8.0, addition silicones intermediate, catalyst react, and reaction temperature is 160-200 DEG C, and the response time is that 3-4 is little
Time, when reacting acid number less than 8mgKOH/g, dropping trimellitic anhydride carries out aqueous end-blocking, keeps reaction temperature, and 1-2 is little in reaction
Time, react when acid number is 25 ± 10mgKOH/g, prepared waterborne organic silicon resin.
A kind of water-soluble organic silicon coating the most according to claim 2, it is characterised in that described epoxy resin, trihydroxylic alcohol,
The weight ratio of dihydroxylic alcohols, binary acid, antioxidant, catalyst, trimellitic anhydride and silicones intermediate is: 10-20:20-30:
20-30:30-40:0.2-0.6:0.1-0.8:5-10:60-80.
A kind of water-soluble organic silicon coating the most according to claim 2, it is characterised in that described trihydroxylic alcohol is trihydroxy methyl
One or both in propane and trimethylolethane；Described dihydroxylic alcohols be the one in neopentyl glycol and diglycol or
Two kinds；Described binary acid is one or both in p-phthalic acid and ethanedioic acid.
A kind of water-soluble organic silicon coating the most according to claim 2, it is characterised in that described catalyst is metatitanic acid four fourth
Ester；Described antioxidant is the one in triphenyl phosphate and triphenyl phosphite.
A kind of water-soluble organic silicon coating the most according to claim 1, it is characterised in that described auxiliary agent comprise thickening agent,
One or more in dispersant, film former, defoamer and levelling agent.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610503793.8A CN106047163B (en) | 2016-06-28 | 2016-06-28 | A kind of water-soluble organic silicon coating |
| PCT/CN2017/088332 WO2018001100A1 (en) | 2016-06-28 | 2017-06-14 | Water-soluble organosilicon resin and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610503793.8A CN106047163B (en) | 2016-06-28 | 2016-06-28 | A kind of water-soluble organic silicon coating |
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| CN106047163B CN106047163B (en) | 2018-05-18 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018001100A1 (en) * | 2016-06-28 | 2018-01-04 | 佛山市珀力玛高新材料有限公司 | Water-soluble organosilicon resin and application thereof |
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| Publication number | Publication date |
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| CN106047163B (en) | 2018-05-18 |
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