CN107828327A - A kind of waterborne anti-rust sealer - Google Patents
A kind of waterborne anti-rust sealer Download PDFInfo
- Publication number
- CN107828327A CN107828327A CN201711024258.5A CN201711024258A CN107828327A CN 107828327 A CN107828327 A CN 107828327A CN 201711024258 A CN201711024258 A CN 201711024258A CN 107828327 A CN107828327 A CN 107828327A
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- waterborne anti
- rust
- ppg
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Classifications
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- C—CHEMISTRY; METALLURGY
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- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/08—Polyurethanes from polyethers
-
- 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
- C09D175/06—Polyurethanes from polyesters
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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
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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Abstract
The present invention relates to sealer technical field, and in particular to a kind of waterborne anti-rust sealer, on the basis of the parts by weight of PPG 100, the waterborne anti-rust sealer includes：The parts by weight of PPG 100, the parts by weight of isocyanates 40~120, the parts by weight of catalyst 3~8, the parts by weight of chain extender 2~10, the parts by weight of epoxy resin 30~120, the parts by weight of water-soluble silicate 20~50, the parts by weight of organosilicon acid esters 3~8, the parts by weight of silane coupler 3~12, the parts by weight of inorganic filler 5~25, the parts by weight of graphene 0.1~0.5, the parts by weight of modifying agent 1~10, the parts by weight of organic solvent 10~15 and the parts by weight of water 200~500.The present invention to polyurethane by being modified, on the one hand the water solubility of polyurethane can be improved, on the other hand polyurethane and the compatible degree of inorganic material can also be improved, polyurethane and silicate and inorganic filler is set fully to merge, disperse, the adhesion of sealer and matrix can be improved, prevents confining bed from falling off phenomenon after long-term use.
Description
Technical field
The present invention relates to sealer technical field, and in particular to a kind of waterborne anti-rust sealer.
Background technology
Rail fastening is the part that connection rail and sleeper are allowed to be formed the section of track, is ensureing track stability, reliability side
Face plays an important role, and with the development of China Express Railway and heavy haul transport, rail fastening performance is further improved, bullet
Bar is the important component of rail fastening, it mainly using elastic deformation when stored energy play alleviate mechanical oscillation and
The effect of impact, the alternate stresses such as long-term, periodic bending, torsion are born under dynamic loading.
At home in existing railway elastic bar technology, typically using 60Si2MnA, 60Si2CrA spring steel as making railway
The material of spring, due to its exposure in atmosphere, corrosion phenomenon easily occurs, and be easily worn after long-term use.In order to anti-
Corrosion only occurs, one layer of sealer can be all applied on spring surface to form protecting film, improves the decay resistance of spring and resistance to
It is abrasiveness.At present, conventional sealer has solvent-borne type and water-based two major class.Solvent-borne type endangers due to existing to human and environment,
Gradually by watersoluble closed dose of substitution.Watersoluble closed dose has very high antiseptic property and extremely strong adhesive force, dried closing
Film layer has the characteristics that excellent bright property, planarization, Anti- tarnishing and high tack.Such as Publication No. CN102719121A
Chinese invention patent discloses a kind of hybrid inorganic-organic silane metal water-based anticorrosive paint, using what is rolled into a ball containing multiple functions
Aqueous sol is as active ingredient, with synthesis technique is simple, antiseptic property is excellent, adhesive force is good, product stability is good, solidification
When the characteristics of not needing heating, drying, but its is weather-proof, water resistance is undesirable, with the plating piece etch resistant properties of its closing with the time
Extension reduces quickly.
Publication No. CN104059412A Chinese invention patent provides a kind of preparation method of antirust sealer, the party
Method includes successively mixing water, silane coupler, water-soluble silicate, accelerator, cilicon oxide filler and water-soluble film-forming resin
Uniformly；Waterborne polyurethane resin is included wherein in water-soluble film-forming resin, but its solidification temperature is high, hardening time length, can not
Reach preferable antiseptic property in cryogenic freezing.
To sum up, watersoluble closed dose of prior art have with other water-based system compatibilities it is bad the shortcomings that, and tradition
Watersoluble closed dose some performances are not so good as traditional solvent-borne, such as：Adhesive force is small, corrosion-resistant and surface drying time are grown.
The content of the invention
For the shortcomings that watersoluble closed dose of the prior art of corrosion resistance is poor, adhesive force is small, corrosion-resistant, sheet
The purpose of invention is to provide a kind of waterborne anti-rust sealer, and it has the characteristics of corrosion resistance and good and strong adhesive force.
To achieve these goals, the present invention provides a kind of waterborne anti-rust sealer, using the parts by weight of PPG 100 as
Benchmark, the waterborne anti-rust sealer include：The parts by weight of PPG 100, the parts by weight of isocyanates 40~120, catalyst 3
~8 parts by weight, the parts by weight of chain extender 2~10, the parts by weight of epoxy resin 30~120, the parts by weight of water-soluble silicate 20~50, have
The parts by weight of machine esters of silicon acis 3~8, the parts by weight of silane coupler 3~12, the parts by weight of inorganic filler 5~25, the weight of graphene 0.1~0.5
Measure part, the parts by weight of modifying agent 1~10, the parts by weight of organic solvent 10~15 and the parts by weight of water 200~500.
Pass through above-mentioned technical proposal, the present invention have following technique effect：
PPG and isocyanates are reacted generation base polyurethane prepolymer for use as by the present invention in the presence of a catalyst first, then
Polyurethane is modified by modifying agent, on the one hand can improve the water solubility of polyurethane, on the other hand can also be improved poly-
The compatible degree of urethane and inorganic material, polyurethane and silicate and inorganic filler is set fully to merge, disperse, it is possible to increase
The adhesion of sealer and matrix, prevents confining bed from falling off phenomenon after long-term use.
Other features and advantages of the present invention will be described in detail in subsequent specific embodiment part.
Embodiment
The embodiment of the present invention is described in detail below.It is it should be appreciated that described herein specific
Embodiment is merely to illustrate and explain the present invention, and is not intended to limit the invention.
The end points of disclosed scope and any value are not limited to the accurate scope or value herein, these scopes or
Value should be understood to comprising the value close to these scopes or value.For number range, between the endpoint value of each scope, respectively
It can be combined with each other between the endpoint value of individual scope and single point value, and individually between point value and obtain one or more
New number range, these number ranges should be considered as specific open herein.
The present invention provides a kind of waterborne anti-rust sealer, on the basis of the parts by weight of PPG 100, the waterborne anti-rust
Sealer includes：The parts by weight of PPG 100, the parts by weight of isocyanates 40~120, the parts by weight of catalyst 3~8, chain extender 2
~10 parts by weight, the parts by weight of epoxy resin 30~120, the parts by weight of water-soluble silicate 20~50, the weight of organosilicon acid esters 3~8
Part, the parts by weight of silane coupler 3~12, the parts by weight of inorganic filler 5~25, the parts by weight of graphene 0.1~0.5, modifying agent 1~10
Parts by weight, the parts by weight of organic solvent 10~15 and the parts by weight of water 200~500.
In the case of, according to the invention it is preferred to, on the basis of the parts by weight of PPG 100, the waterborne anti-rust sealer
Including：The parts by weight of PPG 100, the parts by weight of isocyanates 60~80, the parts by weight of catalyst 3~8, the weight of chain extender 5~8
Part, the parts by weight of epoxy resin 50~100, the parts by weight of water-soluble silicate 30~45, the parts by weight of organosilicon acid esters 5~6, silane are even
Connection agent 5~10 parts by weight, the parts by weight of inorganic filler 10~20, the parts by weight of graphene 0.1~0.5, the parts by weight of modifying agent 3~8, have
The parts by weight of solvent 10~15 and the parts by weight of water 200~500.
The present invention also provides a kind of preparation method of waterborne anti-rust sealer, comprises the following steps：
(1) first by PPG, isocyanates and Part I catalyst in organic solvent, it is anti-at 50~85 DEG C
Answer 2~6h；Then modifying agent and Part I chain extender are added, is continued in atmosphere of inert gases, under 60~80 DEG C of reactions
2-3h, obtain watersoluble modified polyurethane A1；
(2) organosilicon acid esters, watersoluble modified polyurethane, epoxy resin and Part II catalyst are mixed in water
It is even, continue to stir 1~2h at 30~50 DEG C, obtain watersoluble modified polyurethane A2；
(3) by watersoluble modified polyurethane A2, water-soluble silicate, graphene, inorganic filler and silane coupler in water
After well mixed, at 40~60 DEG C, 1~3h be incubated, that is, obtains waterborne anti-rust sealer.
PPG and isocyanates are reacted generation base polyurethane prepolymer for use as by the present invention in the presence of a catalyst first, then
Polyurethane is modified by modifying agent, on the one hand can improve the water solubility of polyurethane, on the other hand can also be improved poly-
The compatible degree of urethane and inorganic material, polyurethane and silicate and inorganic filler is set fully to merge, disperse, it is possible to increase
The adhesion of sealer and matrix, prevents confining bed from falling off phenomenon after long-term use.
According to the present invention, watersoluble modified polyurethane and water-soluble silicate in the presence of chain extender and silane coupler,
At 40~60 DEG C, 1~3h is incubated, reaction can be crosslinked, further improve the sealing effect of sealer, improve sealer
Decay resistance.
By adding graphene in the reaction system of step (2), make the graphene dispersion of two dimension in sealer system,
After sealer film-forming, graphene can form layer protecting film on sealer, improve wearability and the sealing of film layer
Property and corrosion resistance, so as to reach improve film layer service life effect.
In the case of, according to the invention it is preferred to, the epoxy resin is selected from bisphenol A type epoxy resin, bisphenol f type epoxy resin
Or cycloaliphatc glycidyl ether type epoxy；It is further preferred that the epoxide number of the epoxy resin is 0.18~0.54eq/
100。
In the case of, according to the invention it is preferred to, the PPG is selected from polyoxypropyleneglycol, polytetrahydrofuran diol
With tetrahydrofuran-propylene oxide copolymer glycols, polyadipate hexylene glycol ester, poly adipate succinic acid ester, polycaprolactone glycol, poly-
At least one of carbonate diol.
In the case of, according to the invention it is preferred to, it is different that the isocyanates is selected from hexamethylene diisocyanate, isophorone two
At least one of cyanate, toluene di-isocyanate(TDI), methyl diphenylene diisocyanate.
According to the present invention, catalyst can be catalyzed PPG and isocyanates reaction, generate polyurethane, preferable case
Under, the catalyst is selected from stannous octoate and/or dibutyl tin laurate.
In the case of, according to the invention it is preferred to, the weight ratio of the Part I catalyst and Part II catalyst is 1：
(0.5~0.8).
In the case of, according to the invention it is preferred to, the chain extender is selected from the material of small molecule amine or small molecule alcohol, such as 1,
4 butanediols, ethylene glycol, diethylene glycol (DEG), propane diols, Isosorbide-5-Nitrae-cyclohexanediol, hydrogenated bisphenol A, 4,4'- diaminourea -3,3'- dichloros
At least one of methane.
According to the present invention, the present invention is modified by modifying agent to polyurethane, can not only improve the water-soluble of polyurethane
Property, while the compatible degree between polyurethane and inorganic filler can also be improved, under preferable case, the modifying agent is selected from tetrafluoro pair
Benzene dinitrile or 5,5', 6,6'- tetrahydroxys -3,3,3', the double indanes of 3'- tetramethyls -1,1'- spiral, it is further preferred that described change
Property agent and the PPG weight ratio be (0.03~0.08):1.
According to the present invention, in order to improve dispersed homogeneous degree of the graphene in system, under preferable case, the graphene is also
Former graphene oxide, the preparation method of the reduction-oxidation graphite can be prior art, such as can be：(1) stone will be aoxidized
Black alkene 200mg is added in 100ml deionized waters, and ultrasound forms graphene oxide liquid mixture after peeling off 0.5h.(2) to oxidation stone
800mgEDDS is separately added into black alkene mixed liquor, after ultrasonic mixing is uniform, is placed in microwave reactor the magnetic agitation at 95 DEG C
Reduction reaction 4h is carried out, after reaction terminates, product is centrifuged into 10min under the conditions of 7000rpm, then be washed with deionized
Filter, vacuum freeze drying 3 days most under the conditions of -110 DEG C, that is, obtain the redox graphene of black powder.
In the case of, according to the invention it is preferred to, the organosilicon acid esters is tetraethyl orthosilicate.
In the case of, according to the invention it is preferred to, the organic solvent is 1-METHYLPYRROLIDONE.
According to the present invention, silane coupler can be such that watersoluble modified polyurethane is reacted with water-soluble silicate, preferable case
Under, the silane coupler is selected from γ-methacryloxypropyl trimethoxy silane, γ-(2,3- the third oxygen of epoxy) propyl group
At least one of trimethoxy silane and gamma-aminopropyl-triethoxy-silane.
In the case of, according to the invention it is preferred to, the water-soluble silicate is selected from anhydrous sodium metasilicate, SODIUM METASILICATE PENTAHYDRATE and nine water
At least one of sodium metasilicate.
In the case of, according to the invention it is preferred to, the inorganic filler is silica and/or aluminum oxide.
According to the present invention, in order to further optimize the performance of sealer, under preferable case, also contain in waterborne anti-rust sealer
Have an auxiliary agent, the auxiliary agent in thickener, defoamer, wetting agent, antioxidant, coalescents, surfactant at least
It is a kind of.
In the case of, according to the invention it is preferred to, the thickener is selected from carboxycellulose class, polyvinyl alcohol and polyacrylic acid
At least one of esters；Such as can be in carboxymethyl cellulose, carboxyethyl cellulose, polyvinyl alcohol and polyacrylate
It is at least one.
In the case of, according to the invention it is preferred to, it is sweet that the defoamer is selected from dimethyl silicone polymer, polyoxypropylene ethylene oxide
At least one of oily ether, fluorosilicone, ethylene glycol siloxanes.
In the case of, according to the invention it is preferred to, the wetting agent is selected from polyethylene glycol 400, methanol, ethanol, normal propyl alcohol, isopropyl
At least one of alcohol, 2- methyl isophthalic acids-propyl alcohol, n-butanol, 2- butanol and tert-butyl alcohol.
In the case of, according to the invention it is preferred to, the antioxidant is Hinered phenols antioxidant, such as can be antioxidant
264th, at least one of antioxidant 1076, antioxidant 1010, antioxidant 1098, antioxidant 2246-S, antioxidant 300.
In the case of, according to the invention it is preferred to, the coalescents are selected from propandiol butyl ether, propylene glycol methyl ether acetate, gathered
At least one of vinylpyrrolidone and polyvinyl butyral resin.
In the case of, according to the invention it is preferred to, the surfactant is selected from dodecyl sodium sulfate, DBSA
In sodium, potassium oleate, Polyethylene Octylphenol Ether, Triton X-100, polysorbate -61, Tween-80 extremely
Few one kind.
The present invention will be described in detail by way of examples below.
In following examples, the preparation method of redox graphene is：(1) graphene oxide 200mg is added to
In 100ml deionized waters, ultrasound forms graphene oxide liquid mixture after peeling off 0.5h.(2) divide into graphene oxide liquid mixture
Not Jia Ru 800mg EDDS, after ultrasonic mixing is uniform, is placed in microwave reactor at 95 DEG C magnetic agitation and carries out reduction reaction
4h, after reaction terminates, product is centrifuged into 10min under the conditions of 7000rpm, then filtering is washed with deionized, most after -110
Vacuum freeze drying 3 days under the conditions of DEG C, that is, obtain the redox graphene of black powder.
Embodiment 1
(1) by 100 parts by weight polyoxypropyleneglycols, 75 parts by weight hexamethylene diisocyanates and 3 parts by weight of octanoic acid
Stannous reacts 3h in 12 parts by weight 1-METHYLPYRROLIDONEs at 75 DEG C；Then 5 parts by weight tetrafluoro terephthalonitriles and 6 are added
Parts by weight of propylene glycol, then the 2.5h under 75 DEG C of reactions, obtains watersoluble modified polyurethane A1；
(2) by 5.3 parts by weight tetraethyl orthosilicates, watersoluble modified polyurethane A1,75 parts by weight of bisphenol F type epoxy resin (rings
Oxygen value is 0.32eq/100) and 2 parts by weight of octanoic acid stannous in 50 parts by weight water be well mixed, continue to stir 1h at 45 DEG C,
Obtain watersoluble modified polyurethane A2；
(3) by watersoluble modified polyurethane A2, the water sodium metasilicate of 38 parts by weight nine, 0.2 parts by weight redox graphene, 15 weights
Measure part aluminum oxide, 0.5 parts by weight carboxyethyl cellulose, 2 parts by weight dimethyl silicone polymers, 1.5 part by weight of n-butanol, 0.8 weight
Amount part antioxidant 1098,1.5 weight account polyethylene butyrals, 2 parts by weight Triton X-100s and 8 parts by weight γ-
After aminopropyl triethoxysilane is well mixed in 200 parts by weight water, at 55 DEG C, 1.5h is incubated, that is, obtains waterborne anti-rust
Sealer；
Track switch spring is soaked into 15min in above-mentioned sealer, then in 75 DEG C of drying, obtains spring A1, its performance is such as
Shown in table 1.
Embodiment 2
(1) first by 100 parts by weight polyadipate hexylene glycol esters, 60 parts by weight hexamethylene diisocyanates and 2 parts by weight
Stannous octoate reacts 4h in 10 parts by weight 1-METHYLPYRROLIDONEs at 60 DEG C；Then 3 parts by weight tetrafluoro terephthalonitriles are added
With 8 parts by weight of propylene glycol, then the 3h under 75 DEG C of reactions, obtains watersoluble modified polyurethane A1；
(2) by 6 parts by weight tetraethyl orthosilicates, watersoluble modified polyurethane A1,50 parts by weight of bisphenol F type epoxy resin (epoxies
Be worth for 0.43eq/100) and 1 parts by weight of octanoic acid stannous in 100 parts by weight be well mixed, continue to stir 1.5h at 45 DEG C, obtain
To watersoluble modified polyurethane A2；
(3) by watersoluble modified polyurethane A2,30 parts by weight SODIUM METASILICATE PENTAHYDRATEs, 0.1 parts by weight redox graphene, 10 weights
Measure part silica, 2 parts by weight carboxyethyl celluloses, 1 parts by weight fluorosilicone, the 1 parts by weight tert-butyl alcohol, 0.3 parts by weight antioxygen
Agent 1098,0.5 weight account polyethylene butyral and 5 parts by weight gamma-aminopropyl-triethoxy-silanes mix in 200 parts by weight water
After closing uniformly, at 50 DEG C, 2h is incubated, that is, obtains waterborne anti-rust sealer；
Track switch spring is soaked into 15min in above-mentioned sealer, then in 75 DEG C of drying, obtains spring A2, its performance is such as
Shown in table 1.
Embodiment 3
(1) it is first that 100 parts by weight polyoxypropyleneglycols, 80 parts by weight IPDIs and 4 parts by weight are pungent
Sour stannous reacts 3h in 15 parts by weight 1-METHYLPYRROLIDONEs at 70 DEG C；Then add 8 parts by weight tetrafluoro terephthalonitriles and
5 parts by weight Isosorbide-5-Nitraes-cyclohexanediol, then the 2h under 75 DEG C of reactions, obtains watersoluble modified polyurethane A1；
(2) by 5 parts by weight tetraethyl orthosilicates, watersoluble modified polyurethane A1,100 parts by weight of bisphenol F type epoxy resin (epoxies
Be worth for 0.25eq/100) and 4 parts by weight of octanoic acid stannous in 150 parts by weight be well mixed, continue at 45 DEG C stir 2h room temperatures
Lower standing 10h, obtain watersoluble modified polyurethane A2；
(3) by watersoluble modified polyurethane A2, the water sodium metasilicate of 45 parts by weight nine, 0.5 parts by weight redox graphene, 20 weights
Measure part silica, 3 parts by weight carboxymethyl celluloses, 1 parts by weight dimethyl silicone polymer, the 0.5 parts by weight tert-butyl alcohol, 1 weight
Part antioxidant 1098,1 weight account polyethylene butyral, 2 parts by weight Triton X-100s and 10 parts by weight γ-ammonia third
After ethyl triethoxy silicane alkane is well mixed in 250 parts by weight water, at 50 DEG C, 2h is incubated, that is, obtains waterborne anti-rust sealer；
Track switch spring is soaked into 15min in above-mentioned sealer, then in 75 DEG C of drying, obtains spring A3, its performance is such as
Shown in table 1.
Embodiment 4
(1) first by 100 parts by weight polyadipate hexylene glycol esters, 40 parts by weight IPDIs and 5 parts by weight
Stannous octoate reacts 6h in 10 parts by weight 1-METHYLPYRROLIDONEs at 50 DEG C；Then 1 parts by weight 5,5', 6,6'- tetra- is added
Hydroxyl -3,3,3', the double indanes of 3'- tetramethyls -1,1'- spiral and 2 parts by weight ethylene glycol, then the 3h under 80 DEG C of reactions, is obtained
Watersoluble modified polyurethane A1；
(2) by 3 parts by weight tetraethyl orthosilicates, watersoluble modified polyurethane A1,120 parts by weight of bisphenol A type epoxy resin (epoxies
Be worth for 0.18eq/100) and 3 parts by weight of octanoic acid stannous in 50 parts by weight water be well mixed, continue to stir 2h at 30 DEG C, obtain
To watersoluble modified polyurethane A2；
(3) by watersoluble modified polyurethane A2,20 parts by weight SODIUM METASILICATE PENTAHYDRATEs, 0.5 parts by weight redox graphene, 5 weights
Measure part aluminum oxide, 0.5 parts by weight carboxymethyl cellulose, 2 parts by weight fluorosilicones, 1 parts by weight of isopropyl alcohol, 5 parts by weight antioxidant
1076th, 3 weight account polyethylene butyrals, 2 parts by weight of potassium oleate and 8 parts by weight gamma-aminopropyl-triethoxy-silanes are in 150 weights
Measure after being well mixed in part water, at 40 DEG C, be incubated 3h, that is, obtain waterborne anti-rust sealer；
Track switch spring is soaked into 15min in above-mentioned sealer, then in 75 DEG C of drying, obtains spring A4, its performance is such as
Shown in table 1.
Embodiment 5
(1) first by 100 parts by weight polyadipate hexylene glycol esters, 120 parts by weight IPDIs and 2 parts by weight
Stannous octoate reacts 2h in 15 parts by weight 1-METHYLPYRROLIDONEs at 85 DEG C；Then 1 parts by weight 5,5', 6,6'- tetra- is added
Hydroxyl -3,3,3', the double indanes of 3'- tetramethyls -1,1'- spiral and 10 parts by weight ethylene glycol, then the 3h under 60 DEG C of reactions, is obtained
Watersoluble modified polyurethane A1；
(2) by 8 parts by weight tetraethyl orthosilicates, watersoluble modified polyurethane A1,30 parts by weight of bisphenol A type epoxy resin (epoxies
Be worth for 0.54eq/100) and 1 parts by weight of octanoic acid stannous in 100 parts by weight water be well mixed, continue to stir 1h at 50 DEG C, obtain
To watersoluble modified polyurethane A2；
(3) by watersoluble modified polyurethane A2, the water sodium metasilicate of 50 parts by weight nine, 0.1 parts by weight of graphite alkene, 25 parts by weight dioxies
SiClx, 3 parts by weight carboxyethyl celluloses, 5 parts by weight dimethyl silicone polymers, 0.5 parts by weight antioxidant 1076,1 parts by weight are gathered
Vinyl butyral, 0.5 parts by weight of potassium oleate and 8 parts by weight gamma-aminopropyl-triethoxy-silanes mix in 400 parts by weight water
After uniformly, at 60 DEG C, 1h is incubated, that is, obtains waterborne anti-rust sealer；
Track switch spring is soaked into 15min in above-mentioned sealer, then in 75 DEG C of drying, obtains spring A5, its performance is such as
Shown in table 1.
Comparative example 1
According to the method for embodiment 1, unlike, using not adding tetrafluoro in the preparation process of polyurethane to benzene two
Nitrile；
Track switch spring is soaked into 15min in above-mentioned sealer, then in 75 DEG C of drying, obtains spring B1, its performance is such as
Shown in table 1.
Comparative example 2
According to the method for embodiment 1, the difference is that, do not add graphene；
Track switch spring is soaked into 15min in above-mentioned sealer, then in 75 DEG C of drying, obtains spring B2, its performance is such as
Shown in table 1.
Comparative example 3
According to the method for embodiment 1, the difference is that, do not add tetraethyl orthosilicate；
Track switch spring is soaked into 15min in above-mentioned sealer, then in 75 DEG C of drying, obtains spring B2, its performance is such as
Shown in table 1.
Test case：
By the adhesive force of each spring in GB/T9286-1998 method testing example 1~5 and comparative example 1~3；
By the salt spray resistance of each spring in GB/T10125-2012 method testing example 1~5 and comparative example 1~3；
By the water resistance of each spring in GB/T1733-93 method testing example 1~5 and comparative example 1~3.
Table 1：The performance test table of each spring in embodiment 1~5 and comparative example 1~2
| Adhesive force grade | Salt-fog resistant time (h) | Water resistance (h) | |
| A1 | 0 | 1469 | 1963 |
| A2 | 0 | 1458 | 1875 |
| A3 | 0 | 1427 | 1820 |
| A4 | 0 | 1395 | 1623 |
| A5 | 1 | 1407 | 1574 |
| B1 | 2 | 1042 | 1325 |
| B2 | 2 | 985 | 1088 |
| B3 | 2 | 887 | 956 |
The preferred embodiment of the present invention described in detail above, still, the present invention are not limited in above-mentioned embodiment
Detail, in the range of the technology design of the present invention, a variety of simple variants can be carried out to technical scheme, this
A little simple variants belong to protection scope of the present invention.
It is further to note that each particular technique feature described in above-mentioned embodiment, in not lance
In the case of shield, can be combined by any suitable means, in order to avoid unnecessary repetition, the present invention to it is various can
The combination of energy no longer separately illustrates.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should equally be considered as content disclosed in this invention.
Claims (10)
- A kind of 1. waterborne anti-rust sealer, it is characterised in that on the basis of the parts by weight of PPG 100, the waterborne anti-rust Sealer includes：The parts by weight of PPG 100, the parts by weight of isocyanates 40~120, the parts by weight of catalyst 3~8, chain extender 2 ~10 parts by weight, the parts by weight of epoxy resin 30~120, the parts by weight of water-soluble silicate 20~50, the weight of organosilicon acid esters 3~8 Part, the parts by weight of silane coupler 3~12, the parts by weight of inorganic filler 5~25, the parts by weight of graphene 0.1~0.5, modifying agent 1~10 Parts by weight, the parts by weight of organic solvent 10~15 and the parts by weight of water 200~500.
- 2. waterborne anti-rust sealer according to claim 1, wherein, it is described on the basis of the parts by weight of PPG 100 Waterborne anti-rust sealer includes：The parts by weight of PPG 100, the parts by weight of isocyanates 60~80, the parts by weight of catalyst 3~8, The parts by weight of chain extender 5~8, the parts by weight of epoxy resin 50~100, the parts by weight of water-soluble silicate 30~45, organosilicon acid esters 5~ 6 parts by weight, the parts by weight of silane coupler 5~10, the parts by weight of inorganic filler 10~20, the parts by weight of graphene 0.1~0.5, modification The parts by weight of agent 3~8, the parts by weight of organic solvent 10~15 and the parts by weight of water 200~500.
- 3. waterborne anti-rust sealer according to claim 1 or 2, wherein, the epoxy resin is selected from bisphenol type epoxy tree At least one of fat, bisphenol f type epoxy resin and cycloaliphatc glycidyl ether type epoxy；Wherein, the epoxide number of the epoxy resin is 0.18~0.54eq/100.
- 4. waterborne anti-rust sealer according to claim 1 or 2, wherein, the PPG is selected from PPOX Glycol, polytetrahydrofuran diol and tetrahydrofuran-propylene oxide copolymer glycols, polyadipate hexylene glycol ester, polycaprolactone glycol At least one of with PCDL；And/orThe isocyanates is selected from hexamethylene diisocyanate, IPDI, toluene di-isocyanate(TDI) and two At least one of methylenebis phenyl isocyanate.
- 5. waterborne anti-rust sealer according to claim 1 or 2, wherein, the modifying agent be selected from tetrafluoro terephthalonitrile or The double indanes of 5,5', 6,6'- tetrahydroxy -3,3,3', 3'- tetramethyl -1,1'- spirals.
- 6. waterborne anti-rust sealer according to claim 1 or 2, wherein, the modifying agent and the PPG Weight ratio is (0.03~0.08):1.
- 7. waterborne anti-rust sealer according to claim 1 or 2, wherein, the graphene is redox graphene.
- 8. waterborne anti-rust sealer according to claim 1 or 2, wherein, the inorganic filler is silica and/or oxygen Change aluminium.
- 9. waterborne anti-rust sealer according to claim 1 or 2, wherein, also contain in the waterborne anti-rust sealer and help Agent, the auxiliary agent are selected from least one of thickener, defoamer, wetting agent, antioxidant, coalescents, surfactant.
- 10. waterborne anti-rust sealer according to claim 7, wherein, the thickener is selected from carboxycellulose class, poly- second At least one of enol class and polyacrylate；And/orIn the defoamer dimethyl silicone polymer, polyoxypropylene ethylene oxide glycerin ether, fluorosilicone, ethylene glycol siloxanes It is at least one；And/orThe wetting agent is selected from polyethylene glycol 400, methanol, ethanol, normal propyl alcohol, isopropanol, 2- methyl isophthalic acids-propyl alcohol, n-butanol, 2- At least one of butanol and the tert-butyl alcohol；And/orThe antioxidant is Hinered phenols antioxidant；And/orThe coalescents are selected from propandiol butyl ether, propylene glycol methyl ether acetate, polyvinylpyrrolidone and polyvinyl alcohol contracting fourth At least one of aldehyde；And/orThe surfactant is selected from dodecyl sodium sulfate, neopelex, potassium oleate, sim alkylphenol polyoxyethylene At least one of ether, Triton X-100, polysorbate -61, Tween-80.
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| CN109135528A (en) * | 2018-08-17 | 2019-01-04 | 佛山市森昂生物科技有限公司 | A kind of waterborne anti-rust sealer |
| CN109486302A (en) * | 2018-10-31 | 2019-03-19 | 北京恋尚嘉科技有限公司 | A kind of water-soluble purification coating, preparation method and purifying layer |
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| CN109486302A (en) * | 2018-10-31 | 2019-03-19 | 北京恋尚嘉科技有限公司 | A kind of water-soluble purification coating, preparation method and purifying layer |
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Application publication date: 20180323 |