CN110408295A - A kind of preparation method of acidproof waterproof corrosion-resistant epoxy paint - Google Patents
A kind of preparation method of acidproof waterproof corrosion-resistant epoxy paint Download PDFInfo
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- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F283/00—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G
- C08F283/10—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polymers containing more than one epoxy radical per molecule
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- 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
- C09D151/00—Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers
- C09D151/08—Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers grafted on to macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
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- 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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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
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- C09D7/61—Additives non-macromolecular inorganic
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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
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- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
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- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four 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
- C08L2312/00—Crosslinking
Abstract
The invention belongs to technical field of coatings, and in particular to a kind of preparation method of acidproof waterproof corrosion-resistant epoxy paint.Epoxidized soybean oil is strong in the reactivity of maleic anhydride epoxide epoxy group group in the acidproof waterproof corrosion-resistant epoxy paint of the present invention, maleic anhydride can be cured crosslinking in low temperature with epoxy resin, solidify anticorrosive paint can under cryogenic, and acidproof waterproof gel is prepared by product of phenolic resin, the solidification rate for accelerating anticorrosive paint, achievees the purpose that acidproof waterproof；Talcum powder is using acidproof waterproof gel as phenol-formaldehyde resin modified, brightness molybdenum mountain flour and atoleine are added in acidproof waterproof gel, sulfur-containing compound can make atoleine and phenolic resin generate crosslinked action, improve acidproof waterproof gel waterproof performance, and infusion process is used, while adding potassium methyl silicate, suds, makes anticorrosive paint that there is lasting acidproof waterproof and anti-permeability performance, to ensure that coating has better waterproof, acidproof, epoxy anticorrosion, have broad application prospects.
Description
Technical field
The invention belongs to technical field of coatings, and in particular to a kind of preparation method of acidproof waterproof corrosion-resistant epoxy paint.
Background technique
Concrete is that modern society is most widely used and a kind of maximum construction material of dosage, if but concrete exposure for a long time
It aging can even be damaged due to various factors in the natural environment.It is mixed that current some concrete works projects mainly pass through raising
The performance of solidifying soil itself, the construction and maintenance of specification concrete, while making for concrete is extended by construction coating for surface protection
Use the service life.
Coating for surface protection there are two main classes material: one kind is the impregnating with silane material of organic silicon, and another kind of is to have one
Determine the organic coating of coating thickness.Preceding one kind material is mainly used in the protection of ocean underwater concrete, and price is higher, construction compared with
Difficulty, weatherability are poor；Latter class material is the composite coating of layered coating, and every coating has different functions, priming coat master
To be epoxies or acrylic compounds, be mainly used to guarantee have good adhesive force between concrete, middle layer is usually cloud iron
Deng the dense coating with laminal filter, there are the acid ions functions such as certain barrier water and chloride ion, but the effect that its waterproof is acidproof
Fruit is simultaneously bad, it is therefore desirable to be coated with one layer on inter coat figure, form surface covering protection.
Surface covering is usually acrylic compounds, fluorine carbon protective coating, has good weatherability.But common surface applies
Layer is without elasticity, and also without elasticity, concrete coating during expanding with heat and contract with cold can crack, and influence for priming coat and inter coat
Protection of the coating to concrete, simultaneously because in atmospheric environment various factors influence, general surface coating also easily permeates
Moisture and other acidic materials, to accelerate the too fast ageing failure of concrete.
Belonging to material corrosion is the serious problems that the whole world faces, and corrosion not only consumes valuable then richness, but also destroys
Normal life, the production order, corrosion and environmental pollution have attracted more and more attention from people, and are using corrosion-inhibiting coating protection metal
Most effective and most economical method；With people's being increasingly urgent to strictly to environmental protection, no-solvent type is developed, that is, is free of and waves
Hair property organic matter (VOC) or the coating for being free of hazardous air pollutants (HAP) have become the new direction of the research of coatings industry.
Every layer of solventless coatings can apply to obtain thick film, significantly improve efficiency；Solvent-free volatilization when solidification, forms non-porous coating,
The compactness and Isolated Shield performance for improving coating, provide superior Corrosion Protection；Without harmful VOC when production and construction, protect
Retaining ring border, economizes on resources；Coating composition is totally converted film forming, therefore the cost of raw material of per unit thickness is very low；In addition, without molten
Agent coating can also significantly reduce construction cost；Therefore, the research of solvent free corrosion prevention coating can effectively improve the level of resources utilization,
It reduces the wasting of resources and increases economic efficiency, to promote the sustainable development of society, therefore, to solvent-free anticorrosive paint
No matter research has great significance to life or national economy.
Epoxy coating has excellent cohesive force, water resistance and corrosion resistance energy, thus be widely used in steel etc. and belong to and
It is using most wide one of anticorrosive paint on the anti-corrosion protection of the non-ferrous metals such as copper, aluminium；But contain ehter bond in epoxy resin,
Coating degradable chain rupture after solar UV irradiates, so epoxy coating is intolerant to outdoor solarization, easily tarnish dusting.Surface
Coating is usually acrylic compounds, fluorine carbon protective coating, is easy easily to permeate some moisture and other acidic materials, can accelerate coagulation
The too fast ageing failure of soil, common coating are difficult to solidify at low temperature, and difficult defect is brought to construction.
Therefore, inventing the coating of acidproof, water-fast and coating low-temperature setting a kind of is that have very much must to technical field of coatings
It wants.
Summary of the invention
Present invention mainly solves the technical issues of, for concrete surface coating be usually acrylic compounds, fluorine carbon protect
Coating is easy easily to permeate some moisture and other acidic materials, can accelerate the too fast ageing failure of concrete, common coating is low
It is difficult to solidify under temperature, difficult defect is brought to construction, provides a kind of preparation method of acidproof waterproof corrosion-resistant epoxy paint.
In order to solve the above-mentioned technical problem, the technical scheme adopted by the invention is that:
A kind of acidproof waterproof corrosion-resistant epoxy paint the preparation method comprises the following steps:
The ammonium hydroxide that mass fraction is 30% is added into modified epoxy, until liquid pH is 8~9 in four-hole boiling flask, obtains ring
Oxygen lacquer type organic coating weighs epoxidized soybean oil, epoxy resin coating, suds, acidproof water tight packing, potassium methyl silicate, maleic anhydride, sets
With the revolving speed of 2000~2500r/min in high speed disperser, after dispersing 10~15min, obtains acidproof waterproof epoxy anticorrosion and apply
Material；
The specific preparation step of modified epoxy are as follows:
(1) into four-hole boiling flask, be added 50~60mL soybean oil, 10~12mL mass fraction be 15% formic acid solution, 20~
The sulfuric acid solution that the hydrogen peroxide and 30~40mL mass fraction that 25mL mass fraction is 20% are 75% starts blender, with 200~
The revolving speed of 220r/min stirs, and heat temperature raising, 2.0~2.5h of insulation reaction is subsequently moved in separatory funnel, washes, discards water
Phase obtains oily phase, is in 30% sodium hydroxide solution and oily phase with 400~500mL mass fraction, then with distilled water washing 2~3
It is secondary, obtain epoxidized soybean oil；
(2) 180~200g bisphenol A type epoxy resin is placed in the four-hole boiling flask with constant pressure funnel, oil bath heating liter
300~350mL cosolvent is then added to 70~78 DEG C in temperature, after bisphenol A type epoxy resin all dissolution, in nitrogen protection
Under, continue oil bath heating and be warming up to 140~150 DEG C, obtains pre-reaction liquid；
(3) according to parts by weight, methacrylic acid, butyl acrylate, styrene, benzoyl peroxide mixing are taken, is premixed
Solution is closed, by 200~220mL aqueous premix by constant pressure funnel with the drop rate of 5~8mL/min, Xiang Shangshu tetra-
Aqueous premix is added dropwise in pre-reaction liquid in mouth flask, obtains modified epoxy after 2~3h of insulation reaction under the conditions of 70~80 DEG C
Resin；
The acidproof specific preparation step of water tight packing are as follows:
(1) formalin, the phenol, sodium hydroxide, atoleine, brightness molybdenum stone that mass fraction is 35% are put into three-necked flask
Powder is heated to 100~110 DEG C, starts blender, is stirred with 200~300r/min revolving speed, 40~50min of insulation reaction,
Then by three-necked flask 30~45min of vacuum distillation dehydration, continue insulation reaction, be cooled to room temperature to temperature, discharging obtains resistance to
Sour waterproof gel；
(2) according to parts by weight, 6~7 parts of polyethyleneimines and 8~10 parts of tetraethylenepentamine are dissolved in anhydrous equipped with 40~50 parts
In the beaker of methanol, be heated to 70~80 DEG C, stirring until polyethyleneimine is completely dissolved, be added 30 into beaker~
40g talcum powder impregnates 10~12h, functional amido talcum powder is obtained, then by acidproof waterproof gel heat temperature raising, after softening
The interlayer for flowing into functional amido talcum powder is put into the blast drier that set temperature is 120~130 DEG C, is naturally cooling to
Room temperature obtains acidproof water tight packing.
Each raw material in the acidproof specific preparation step of waterproof corrosion-resistant epoxy paint, according to parts by weight, including 10~15 parts of rings
Oxygen soybean oil, 40~50 parts of epoxy resin coatings, 10~12 parts of suds, 20~30 parts of acidproof water tight packings, 20~22 parts of methyl
Potassium silicate, 15~18 parts of maleic anhydrides.
Suds basic laundry soap and distilled water is in mass ratio in the acidproof specific preparation step of waterproof corrosion-resistant epoxy paint
It is obtained for the miscible compounding of 1 ︰ 10.
Insulation reaction temperature is 90~95 DEG C in the specific preparation step of modified epoxy (1).
Cosolvent is 4 ︰ by ethylene glycol monobutyl ether and n-butanol by volume in the specific preparation step of modified epoxy (2)
1 is mixed to get.
The each component of aqueous premix is prepared in the specific preparation step of modified epoxy (4), according to parts by weight, including
20~30 parts of methacrylic acids, 30~40 parts of butyl acrylates, 10~15 parts of styrene, 0.5~1.0 part of benzoyl peroxide.
Acidproof each raw material of waterproof gel in the acidproof specific preparation step of water tight packing (1), according to parts by weight, including 75~
Formalin that 80 parts of mass fractions are 35%, 80~85 parts of phenol, 1~3 part of sodium hydroxide, 14~16 parts of atoleines, 20~
25 parts of brightness molybdenum mountain flours.
Product starts gel occur in three-necked flask during insulation reaction in the acidproof specific preparation step of water tight packing (1)
Afterwards, reaction should be stopped to start to cool down.
Temperature control is 100~120 DEG C after acidproof waterproof gel softening in the acidproof specific preparation step of water tight packing (2).
The beneficial effects of the present invention are:
(1) in the acidproof waterproof corrosion-resistant epoxy paint of the present invention epoxidized soybean oil maleic anhydride epoxide epoxy group group reactivity more
By force, double bond crosslinking occurs for epoxidized soybean oil and maleic anhydride, forms oligomer, keeps the compatibility of epoxy resin and inorganic matter obvious
Improve, and is reduced the curing activation energy of epoxy resin in unit volume anticorrosive paint, maleic anhydride energy in low temperature
It is cured crosslinking with epoxy resin, solidify anticorrosive paint can under cryogenic, and using phenolic resin as product system
Standby acidproof waterproof gel, the infiltration talcum powder for first passing through polyethyleneimine and tetraethylenepentamine make its functional amido, then will be resistance to
Sour waterproof gel heating flows into the hole of talcum powder, and slow cooling prepares interlayer internal pore surface waterproof under the conditions of air blast
Talcum powder makes the aqueous solvent of talcum powder interlayer quickly volatilize, and accelerates the solidification rate of anticorrosive paint, while anticorrosive paint solidifies
Afterwards, fine and close convex-concave surface can be formed in concrete surface, liquefying the droplet to be formed in surface of the paint film in humid air can be rapid
It air-dries, and talcum powder acid-resisting is very strong, while achieving the purpose that acidproof waterproof；(2) present invention in talcum powder with acidproof waterproof
Gel is phenol-formaldehyde resin modified, and brightness molybdenum mountain flour and atoleine are added in acidproof waterproof gel, contains a large amount of element sulphurs in brightness molybdenum stone,
Sulfur-containing compound can make atoleine and phenolic resin generate crosslinked action, make the surface protection film paraffin layer of acidproof waterproof gel
Compactness be improved, acidproof waterproof gel is difficult to absorb water through fine and close protective film, and silicone hydroxyl is by lye in talcum powder
Dehydration condensation can occur for electronegativity influence, reduce the content of surface hydrophilicity hydroxyl, improve acidproof waterproof gel waterproof
Performance, and infusion process is used, with polyethyleneimine and tetraethylenepentamine for amino modified dose, pass through the amido function of talcum powder
Change enables talcum powder and phenolic resin dehydrating condensation, and bonding is integral, and the internal hydrogen bond for having combination improves acidproof waterproof
The binding force of gel and talcum powder prepares the talcum powder for internal void and surface waterproofing, passes through inner hydrophobic talcum powder
The solvent volatilization efficiency of anticorrosive paint is improved, while adding potassium methyl silicate, suds, makes anticorrosive paint that there is persistently acidproof
Waterproof and anti-permeability performance, have broad application prospects.
Specific embodiment
Into four-hole boiling flask, be added 50~60mL soybean oil, 10~12mL mass fraction be 15% formic acid solution, 20~
The sulfuric acid solution that the hydrogen peroxide and 30~40mL mass fraction that 25mL mass fraction is 20% are 75% starts blender, with 200~
The revolving speed of 220r/min stirs, and is heated to 90~95 DEG C, 2.0~2.5h of insulation reaction is subsequently moved in separatory funnel, water
It washes, discards water phase, obtain oily phase, be in 30% sodium hydroxide solution and oily phase with 400~500mL mass fraction, then use distilled water
Washing 2~3 times, obtains epoxidized soybean oil；180~200g bisphenol A type epoxy resin is placed in four with constant pressure funnel
In mouth flask, oil bath heating is warming up to 70~78 DEG C, and 300~350mL cosolvent is then added, complete to bisphenol A type epoxy resin
After portion's dissolution, under nitrogen protection, continues oil bath heating and be warming up to 140~150 DEG C, obtain pre-reaction liquid, the cosolvent
It with n-butanol is by volume that 4 ︰ 1 are mixed to get by ethylene glycol monobutyl ether；According to parts by weight, 20~30 parts of metering systems are taken
Acid, 30~40 parts of butyl acrylates, 10~15 parts of styrene, 0.5~1.0 part of benzoyl peroxide mixing, obtain being pre-mixed molten
Liquid, by 200~220mL aqueous premix by constant pressure funnel with the drop rate of 5~8mL/min, tetra- mouthfuls of Xiang Shangshu burnings
Aqueous premix is added dropwise in pre-reaction liquid in bottle, obtains modified epoxy after 2~3h of insulation reaction under the conditions of 70~80 DEG C；
According to parts by weight, be put into three-necked flask 75~80 parts of mass fractions be 35% formalin, 80~85 parts of phenol, 1~
3 parts of sodium hydroxides, 14~16 parts of atoleines, 20~25 parts of brightness molybdenum mountain flours are heated to 100~110 DEG C, starting stirring
Device, with 200~300r/min revolving speed stirring, 40~50min of insulation reaction, then by three-necked flask vacuum distillation dehydration 30~
45min continues insulation reaction and is cooled to room temperature after product starts to occur gel in three-necked flask to temperature, and discharging obtains resistance to
Sour waterproof gel；According to parts by weight, 6~7 parts of polyethyleneimines and 8~10 parts of tetraethylenepentamine are dissolved in equipped with 40~50 parts
In the beaker of anhydrous methanol, 70~80 DEG C are heated to, stirring is completely dissolved up to polyethyleneimine, and 30 are added into beaker
~40g talcum powder impregnates 10~12h, obtains functional amido talcum powder, acidproof waterproof gel is then heated to 100
~120 DEG C, the interlayer of functional amido talcum powder is flowed into after softening, is put into the blast drier that set temperature is 120~130 DEG C
In, it is naturally cooling to room temperature and obtains acidproof water tight packing；The ammonium hydroxide that mass fraction is 30% is added into modified epoxy, directly
Into four-hole boiling flask liquid pH be 8~9, obtain epoxy resin coating, according to parts by weight, weigh 10~15 parts of epoxidized soybean oils,
40~50 parts of epoxy resin coatings, 10~12 parts of suds, 20~30 parts of acidproof water tight packings, 20~22 parts of potassium methyl silicates, 15
~18 parts of maleic anhydrides are placed in the revolving speed in high speed disperser with 2000~2500r/min, after dispersing 10~15min, obtain resistance to
Sour waterproof corrosion-resistant epoxy paint, the suds basic laundry soap is that 1 ︰ 10 is miscible with distilled water in mass ratio to be compounded
It arrives.
Embodiment 1
The preparation of epoxidized soybean oil:
Into four-hole boiling flask, it is 20% that 50mL soybean oil, the formic acid solution that 10mL mass fraction is 15%, 20mL mass fraction, which is added,
Hydrogen peroxide and 30mL mass fraction be 75% sulfuric acid solution, start blender, stirred with the revolving speed of 200r/min, heating rises
To 90 DEG C, insulation reaction 2.0h is subsequently moved in separatory funnel temperature, and washing discards water phase, obtains oily phase, with 400mL mass point
Number is in 30% sodium hydroxide solution and oily phase, then is washed 2 times with distilled water, obtains epoxidized soybean oil；
The preparation of pre-reaction liquid:
180g bisphenol A type epoxy resin is placed in the four-hole boiling flask with constant pressure funnel, oil bath heating is warming up to 70 DEG C,
300mL cosolvent is then added, after bisphenol A type epoxy resin all dissolution, under nitrogen protection, continues oil bath heating heating
To 140 DEG C, pre-reaction liquid is obtained, the cosolvent is that 4 ︰ 1 are mixed to get with n-butanol by ethylene glycol monobutyl ether by volume；
The preparation of modified epoxy:
According to parts by weight, 20 parts of methacrylic acids, 30 parts of butyl acrylates, 10 parts of styrene, 0.5 part of benzoyl peroxide are taken
Mixing, obtains aqueous premix, by 200mL aqueous premix by constant pressure funnel with the drop rate of 5mL/min, upwards
It states in four-hole boiling flask and aqueous premix is added dropwise in pre-reaction liquid, obtain modified epoxy tree after insulation reaction 2h under the conditions of 70 DEG C
Rouge；
The preparation of acidproof waterproof gel:
According to parts by weight, formalin, the 80 parts of phenol, 1 part of hydrogen-oxygen that 75 parts of mass fractions are 35% are put into three-necked flask
Change sodium, 14 parts of atoleines, 20 parts of brightness molybdenum mountain flours, be heated to 100 DEG C, start blender, is stirred with 200r/min revolving speed,
Insulation reaction 40min continues insulation reaction, when product is opened in three-necked flask then by three-necked flask vacuum distillation dehydration 30min
It after gel occurs in beginning, is cooled to room temperature to temperature, discharging obtains acidproof waterproof gel；
The preparation of acidproof water tight packing:
According to parts by weight, 6 parts of polyethyleneimines and 8 parts of tetraethylenepentamine are dissolved in the beaker equipped with 40 parts of anhydrous methanols,
70 DEG C are heated to, until polyethyleneimine is completely dissolved, the addition 30g talcum powder into beaker impregnates 10h, obtains for stirring
Acidproof waterproof gel is then heated to 100 DEG C by functional amido talcum powder, and functional amido talcum powder is flowed into after softening
Interlayer, being put into set temperature is to be naturally cooling to room temperature in 120 DEG C of blast drier and obtain acidproof water tight packing；
The preparation of acidproof waterproof corrosion-resistant epoxy paint:
The ammonium hydroxide that mass fraction is 30% is added into modified epoxy, until liquid pH is 8 in four-hole boiling flask, obtains epoxy
Lacquer type organic coating weighs 10 parts of epoxidized soybean oils, 40 parts of epoxy resin coatings, 10 parts of suds, 20 parts of acidproof waterproofs according to parts by weight
Filler, 20 parts of potassium methyl silicates, 15 parts of maleic anhydrides are placed in the revolving speed in high speed disperser with 2000r/min, disperse 10min
Afterwards, acidproof waterproof corrosion-resistant epoxy paint is obtained, the suds basic laundry soap and distilled water are 1 ︰ 10 mixed in mass ratio
Molten compounding obtains.
Embodiment 2
The preparation of epoxidized soybean oil:
Into four-hole boiling flask, it is 20% that 55mL soybean oil, the formic acid solution that 11mL mass fraction is 15%, 23mL mass fraction, which is added,
Hydrogen peroxide and 35mL mass fraction be 75% sulfuric acid solution, start blender, stirred with the revolving speed of 210r/min, heating rises
To 93 DEG C, insulation reaction 2.25h is subsequently moved in separatory funnel temperature, and washing discards water phase, obtains oily phase, with 450mL mass
Score is in 30% sodium hydroxide solution and oily phase, then is washed 2 times with distilled water, obtains epoxidized soybean oil；
The preparation of pre-reaction liquid:
190g bisphenol A type epoxy resin is placed in the four-hole boiling flask with constant pressure funnel, oil bath heating is warming up to 74 DEG C,
325mL cosolvent is then added, after bisphenol A type epoxy resin all dissolution, under nitrogen protection, continues oil bath heating heating
To 145 DEG C, pre-reaction liquid is obtained, the cosolvent is that 4 ︰ 1 are mixed to get with n-butanol by ethylene glycol monobutyl ether by volume；
The preparation of modified epoxy:
According to parts by weight, 25 parts of methacrylic acids, 35 parts of butyl acrylates, 12.5 parts of styrene, 0.75 part of benzoyl peroxide are taken
Formyl mixing, obtains aqueous premix, by 210mL aqueous premix by constant pressure funnel with the dropwise addition speed of 6.5mL/min
Rate is added dropwise aqueous premix in pre-reaction liquid in Xiang Shangshu four-hole boiling flask, is changed after insulation reaction 2.5h under the conditions of 75 DEG C
Property epoxy resin；
The preparation of acidproof waterproof gel:
According to parts by weight, formalin, the 82.5 parts of phenol, 2 parts that 77.5 parts of mass fractions are 35% are put into three-necked flask
Sodium hydroxide, 15 parts of atoleines, 22.5 parts of brightness molybdenum mountain flours are heated to 105 DEG C, start blender, are turned with 250r/min
Speed stirring, insulation reaction 45min continue insulation reaction, work as three-necked flask then by three-necked flask vacuum distillation dehydration 38min
Middle product starts after there is gel, is cooled to room temperature to temperature, and discharging obtains acidproof waterproof gel；
The preparation of acidproof water tight packing:
According to parts by weight, 6.5 parts of polyethyleneimines and 9 parts of tetraethylenepentamine are dissolved in the beaker equipped with 45 parts of anhydrous methanols
In, 75 DEG C are heated to, until polyethyleneimine is completely dissolved, the addition 35g talcum powder into beaker impregnates 11h, obtains for stirring
To functional amido talcum powder, acidproof waterproof gel is then heated to 110 DEG C, functional amido talcum is flowed into after softening
The interlayer of powder is put into the blast drier that set temperature is 125 DEG C, is naturally cooling to room temperature and obtains acidproof water tight packing；
The preparation of acidproof waterproof corrosion-resistant epoxy paint:
The ammonium hydroxide that mass fraction is 30% is added into modified epoxy, until liquid pH is 8.5 in four-hole boiling flask, obtains ring
Oxygen lacquer type organic coating, according to parts by weight, weigh 12.5 parts of epoxidized soybean oils, 45 parts of epoxy resin coatings, 11 parts of suds, 25 parts it is acidproof
Water tight packing, 21 parts of potassium methyl silicates, 16.5 parts of maleic anhydrides, are placed in the revolving speed in high speed disperser with 2250r/min, dispersion
After 12.5min, acidproof waterproof corrosion-resistant epoxy paint is obtained, the suds basic laundry soap is in mass ratio with distilled water
The miscible compounding of 1 ︰ 10 obtains.
Embodiment 3
The preparation of epoxidized soybean oil:
Into four-hole boiling flask, it is 20% that 60mL soybean oil, the formic acid solution that 12mL mass fraction is 15%, 25mL mass fraction, which is added,
Hydrogen peroxide and 40mL mass fraction be 75% sulfuric acid solution, start blender, stirred with the revolving speed of 220r/min, heating rises
To 95 DEG C, insulation reaction 2.5h is subsequently moved in separatory funnel temperature, and washing discards water phase, obtains oily phase, with 500mL mass point
Number is in 30% sodium hydroxide solution and oily phase, then is washed 3 times with distilled water, obtains epoxidized soybean oil；
The preparation of pre-reaction liquid:
200g bisphenol A type epoxy resin is placed in the four-hole boiling flask with constant pressure funnel, oil bath heating is warming up to 78 DEG C,
350mL cosolvent is then added, after bisphenol A type epoxy resin all dissolution, under nitrogen protection, continues oil bath heating heating
To 150 DEG C, pre-reaction liquid is obtained, the cosolvent is that 4 ︰ 1 are mixed to get with n-butanol by ethylene glycol monobutyl ether by volume；
The preparation of modified epoxy:
According to parts by weight, 30 parts of methacrylic acids, 40 parts of butyl acrylates, 15 parts of styrene, 1.0 parts of benzoyl peroxides are taken
Mixing, obtains aqueous premix, by 220mL aqueous premix by constant pressure funnel with the drop rate of 8mL/min, upwards
It states in four-hole boiling flask and aqueous premix is added dropwise in pre-reaction liquid, obtain modified epoxy tree after insulation reaction 3h under the conditions of 80 DEG C
Rouge；
The preparation of acidproof waterproof gel:
According to parts by weight, formalin, the 85 parts of phenol, 3 parts of hydrogen-oxygens that 80 parts of mass fractions are 35% are put into three-necked flask
Change sodium, 16 parts of atoleines, 25 parts of brightness molybdenum mountain flours, be heated to 110 DEG C, start blender, is stirred with 300r/min revolving speed,
Insulation reaction 50min continues insulation reaction, when product is opened in three-necked flask then by three-necked flask vacuum distillation dehydration 45min
It after gel occurs in beginning, is cooled to room temperature to temperature, discharging obtains acidproof waterproof gel；
The preparation of acidproof water tight packing:
According to parts by weight, 7 parts of polyethyleneimines and 10 parts of tetraethylenepentamine are dissolved in the beaker equipped with 50 parts of anhydrous methanols,
80 DEG C are heated to, until polyethyleneimine is completely dissolved, the addition 40g talcum powder into beaker impregnates 12h, obtains for stirring
Acidproof waterproof gel is then heated to 120 DEG C by functional amido talcum powder, and functional amido talcum powder is flowed into after softening
Interlayer, being put into set temperature is to be naturally cooling to room temperature in 130 DEG C of blast drier and obtain acidproof water tight packing；
The preparation of acidproof waterproof corrosion-resistant epoxy paint:
The ammonium hydroxide that mass fraction is 30% is added into modified epoxy, until liquid pH is 9 in four-hole boiling flask, obtains epoxy
Lacquer type organic coating weighs 15 parts of epoxidized soybean oils, 50 parts of epoxy resin coatings, 12 parts of suds, 30 parts of acidproof waterproofs according to parts by weight
Filler, 22 parts of potassium methyl silicates, 18 parts of maleic anhydrides are placed in the revolving speed in high speed disperser with 2500r/min, disperse 15min
Afterwards, acidproof waterproof corrosion-resistant epoxy paint is obtained, the suds basic laundry soap and distilled water are 1 ︰ 10 mixed in mass ratio
Molten compounding obtains.
Comparative example 1 and the preparation method of example 1 are essentially identical, have only the difference is that replacing the present invention with ordinary epoxy resin
Modified epoxy.
Comparative example 2 and the preparation method of example 1 are essentially identical, have only the difference is that lacking acidproof water tight packing.
The waterproof acid-resistant paint of 3 Shanghai company of comparative example production.
Water resistance measurement is detected according to " GB/T1733-1993 paint film water resistance measuring method ".
Elongation percentage is according to JG/T172 --- 2005 detections.
Corrosion-resistant epoxy paint in present example and comparative example is uniformly applied to respectively on clean glass plate, by it
It is placed in a low temperature of 0-10 degrees Celsius, observes its surface drying situation, and record surface drying time, the shorter low-temperature setting effect of surface drying time
Fruit is better.
After the coating in embodiment and comparative example is coated on the drying of concrete exterior wall surface cure in the present invention, in its table
Face is coated with H2SO4Solution observes surface of the paint film situation of change.
1 acid-resisting paint performance measurement result of table
| Test item | Embodiment 1 | Embodiment 2 | Embodiment 3 | Comparative example 1 | Comparative example 2 | Comparative example 3 |
| Water resistance (d) | 470 | 480 | 490 | 420 | 430 | 460 |
| Low-temperature setting surface drying time (min) | 17 | 15 | 10 | 30 | 25 | 20 |
| Elongation percentage (- 10 DEG C) | 70 | 73 | 75 | 50 | 55 | 62 |
| Elongation percentage (25 DEG C) | 90 | 100 | 110 | 80 | 85 | 88 |
| Acid resistance | 120h is without exception | 120h is without exception | 120h is without exception | 60h is without exception | 80h is without exception | 90h is without exception |
From the data in table 1, it can be seen that acidproof waterproof corrosion-resistant epoxy paint water resistance produced by the present invention reaches 490d, guarantee that it has preferably
Water resistance, surface drying time is most short up to 10min at low temperature for acidproof waterproof corrosion-resistant epoxy paint produced by the present invention, has good
Low-temperature setting effect, and all there is excellent elongation percentage under low temperature and room temperature, make coating be not easy to shrink fracture, to ensure that
After coating has better waterproofness and acid resistance, and coating is coated on the drying of concrete exterior wall surface cure, applied on its surface
Cloth H2SO4Solution 120h is without exception, has good acid resistance.It has broad application prospects.
The foregoing is merely preferred modes of the invention, are not intended to limit the invention, all in spirit and original of the invention
Within then, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (9)
1. a kind of preparation method of acidproof waterproof corrosion-resistant epoxy paint, it is characterised in that specific preparation step are as follows:
The ammonium hydroxide that mass fraction is 30% is added into modified epoxy, until liquid pH is 8~9 in four-hole boiling flask, obtains ring
Oxygen lacquer type organic coating weighs epoxidized soybean oil, epoxy resin coating, suds, acidproof water tight packing, potassium methyl silicate, maleic anhydride, sets
With the revolving speed of 2000~2500r/min in high speed disperser, after dispersing 10~15min, obtains acidproof waterproof epoxy anticorrosion and apply
Material；
The specific preparation step of the modified epoxy are as follows:
(1) into four-hole boiling flask, be added 50~60mL soybean oil, 10~12mL mass fraction be 15% formic acid solution, 20~
The sulfuric acid solution that the hydrogen peroxide and 30~40mL mass fraction that 25mL mass fraction is 20% are 75% starts blender, with 200~
The revolving speed of 220r/min stirs, and heat temperature raising, 2.0~2.5h of insulation reaction is subsequently moved in separatory funnel, washes, discards water
Phase obtains oily phase, is in 30% sodium hydroxide solution and oily phase with 400~500mL mass fraction, then with distilled water washing 2~3
It is secondary, obtain epoxidized soybean oil；
(2) 180~200g bisphenol A type epoxy resin is placed in the four-hole boiling flask with constant pressure funnel, oil bath heating liter
300~350mL cosolvent is then added to 70~78 DEG C in temperature, after bisphenol A type epoxy resin all dissolution, in nitrogen protection
Under, continue oil bath heating and be warming up to 140~150 DEG C, obtains pre-reaction liquid；
(3) according to parts by weight, methacrylic acid, butyl acrylate, styrene, benzoyl peroxide mixing are taken, is premixed
Solution is closed, by 200~220mL aqueous premix by constant pressure funnel with the drop rate of 5~8mL/min, Xiang Shangshu tetra-
Aqueous premix is added dropwise in pre-reaction liquid in mouth flask, obtains modified epoxy after 2~3h of insulation reaction under the conditions of 70~80 DEG C
Resin；
The specific preparation step of acidproof water tight packing are as follows:
(1) formalin, the phenol, sodium hydroxide, atoleine, brightness molybdenum stone that mass fraction is 35% are put into three-necked flask
Powder is heated to 100~110 DEG C, starts blender, is stirred with 200~300r/min revolving speed, 40~50min of insulation reaction,
Then by three-necked flask 30~45min of vacuum distillation dehydration, continue insulation reaction, be cooled to room temperature to temperature, discharging obtains resistance to
Sour waterproof gel；
(2) according to parts by weight, 6~7 parts of polyethyleneimines and 8~10 parts of tetraethylenepentamine are dissolved in anhydrous equipped with 40~50 parts
In the beaker of methanol, be heated to 70~80 DEG C, stirring until polyethyleneimine is completely dissolved, be added 30 into beaker~
40g talcum powder impregnates 10~12h, functional amido talcum powder is obtained, then by acidproof waterproof gel heat temperature raising, after softening
The interlayer for flowing into functional amido talcum powder is put into the blast drier that set temperature is 120~130 DEG C, is naturally cooling to
Room temperature obtains acidproof water tight packing.
2. a kind of preparation method of acidproof waterproof corrosion-resistant epoxy paint according to claim 1, it is characterised in that: described
Each raw material in the acidproof specific preparation step of waterproof corrosion-resistant epoxy paint, according to parts by weight, including 10~15 parts of epoxidized soybean oils,
40~50 parts of epoxy resin coatings, 10~12 parts of suds, 20~30 parts of acidproof water tight packings, 20~22 parts of potassium methyl silicates, 15
~18 parts of maleic anhydrides.
3. a kind of preparation method of acidproof waterproof corrosion-resistant epoxy paint according to claim 1, it is characterised in that: described
Suds basic laundry soap and distilled water are 1 ︰ 10 mixed in mass ratio in the acidproof specific preparation step of waterproof corrosion-resistant epoxy paint
Molten compounding obtains.
4. a kind of preparation method of acidproof waterproof corrosion-resistant epoxy paint according to claim 1, it is characterised in that:
Insulation reaction temperature is 90~95 DEG C in the specific preparation step of the modified epoxy (1).
5. a kind of preparation method of acidproof waterproof corrosion-resistant epoxy paint according to claim 1, it is characterised in that: described
Cosolvent is that 4 ︰ 1 are mixed with n-butanol by ethylene glycol monobutyl ether by volume in the specific preparation step of modified epoxy (2)
It arrives.
6. a kind of preparation method of acidproof waterproof corrosion-resistant epoxy paint according to claim 1, it is characterised in that: described
The each component of aqueous premix is prepared in the specific preparation step of modified epoxy (4), according to parts by weight, including 20~30 parts
Methacrylic acid, 30~40 parts of butyl acrylates, 10~15 parts of styrene, 0.5~1.0 part of benzoyl peroxide.
7. a kind of preparation method of acidproof waterproof corrosion-resistant epoxy paint according to claim 1, it is characterised in that: described
Acidproof each raw material of waterproof gel in the acidproof specific preparation step of water tight packing (1), according to parts by weight, including 75~80 parts of quality
Score be 35% formalin, 80~85 parts of phenol, 1~3 part of sodium hydroxide, 14~16 parts of atoleines, 20~25 parts of brightness molybdenums
Mountain flour.
8. a kind of preparation method of acidproof waterproof corrosion-resistant epoxy paint according to claim 1, it is characterised in that: described
Product starts after there is gel in three-necked flask during insulation reaction in the acidproof specific preparation step of water tight packing (1), should stop
Only reaction starts to cool down.
9. a kind of preparation method of acidproof waterproof corrosion-resistant epoxy paint according to claim 1, it is characterised in that:
Temperature control is 100~120 after acidproof waterproof gel softening in the specific preparation step of acidproof water tight packing (2)
℃。
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112574642A (en) * | 2020-12-14 | 2021-03-30 | 西安科采能源装备有限公司 | Acid-resistant high-temperature-resistant modified epoxy phenolic anticorrosive paint |
| CN116790178A (en) * | 2023-08-24 | 2023-09-22 | 广州恒峰新材料科技有限公司 | Corrosion-resistant aqueous epoxy resin coating and preparation method thereof |
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| WO2016167360A1 (en) * | 2015-04-16 | 2016-10-20 | 三菱レイヨン株式会社 | Antifouling coating composition |
| CN107674475A (en) * | 2017-10-10 | 2018-02-09 | 戴琪 | A kind of preparation method of low-temperature setting aqueous epoxy floor paint |
| CN108715703A (en) * | 2018-09-08 | 2018-10-30 | 佛山朝鸿新材料科技有限公司 | A kind of preparation method of porous silica Si modification waterproof inorganic zinc rich paint |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2016167360A1 (en) * | 2015-04-16 | 2016-10-20 | 三菱レイヨン株式会社 | Antifouling coating composition |
| CN107674475A (en) * | 2017-10-10 | 2018-02-09 | 戴琪 | A kind of preparation method of low-temperature setting aqueous epoxy floor paint |
| CN108715703A (en) * | 2018-09-08 | 2018-10-30 | 佛山朝鸿新材料科技有限公司 | A kind of preparation method of porous silica Si modification waterproof inorganic zinc rich paint |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112574642A (en) * | 2020-12-14 | 2021-03-30 | 西安科采能源装备有限公司 | Acid-resistant high-temperature-resistant modified epoxy phenolic anticorrosive paint |
| CN116790178A (en) * | 2023-08-24 | 2023-09-22 | 广州恒峰新材料科技有限公司 | Corrosion-resistant aqueous epoxy resin coating and preparation method thereof |
| CN116790178B (en) * | 2023-08-24 | 2023-11-03 | 广州恒峰新材料科技有限公司 | Corrosion-resistant aqueous epoxy resin coating and preparation method thereof |
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