CN108129967A - A kind of aqueous polyurethane anticorrosive paint - Google Patents

A kind of aqueous polyurethane anticorrosive paint Download PDF

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Publication number
CN108129967A
CN108129967A CN201711310322.6A CN201711310322A CN108129967A CN 108129967 A CN108129967 A CN 108129967A CN 201711310322 A CN201711310322 A CN 201711310322A CN 108129967 A CN108129967 A CN 108129967A
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CN
China
Prior art keywords
parts
agent
aqueous polyurethane
anticorrosive paint
paint according
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Pending
Application number
CN201711310322.6A
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Chinese (zh)
Inventor
白甲坡
李博
郭文军
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Shenzhen Rufu joint new material development Co., Ltd.
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郭文军
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Priority to CN201711310322.6A priority Critical patent/CN108129967A/en
Publication of CN108129967A publication Critical patent/CN108129967A/en
Pending legal-status Critical Current

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    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING 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
    • C09D175/00Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
    • C09D175/04Polyurethanes
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING 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
    • C09D5/00Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/08Anti-corrosive paints

Abstract

The present invention discloses a kind of aqueous polyurethane anticorrosive paint, and in particular to a kind of aqueous nano polyurethane coating.Including following raw material according to the mass fraction:42 49 parts of nanometer modified aqueous polyurethane resin, 0.07 0.21 parts of antifoaming agent, 0.07 0.28 parts of moistening flatting agent, 3.5 5.6 parts of coalescents, 0.35 0.49 parts of dispersant, anti- 0.07 0.21 parts of flash rusting agent, 21 28 parts of anticorrosive pigment/filler, 0.14 0.7 parts of thickening leveling agent, 3.5 14 parts of ionized water, the sum of 20 30 parts of curing agent, more than constituent mass percentage composition is 100%.For the present invention with nanometer modified aqueous polyurethane resin (lotion) for base-material, two-component is crosslinked the general anti-corrosion polyurethane coating in bottom surface of film forming.Nano material gives precoat extremely strong self-repair function, and new protective film can be quickly generated by meeting soda acid or metal oxide.The low VOC of product, strong adhesive force, film-forming temperature are low, the alkaline-resisting acid corrosion-resistant performance of film is strong, have superpower self-reparing capability.

Description

A kind of aqueous polyurethane anticorrosive paint
Technical field
The present invention relates to water paint field, particularly a kind of aqueous polyurethane anticorrosive paint.
Background technology
Domestic market for general industrial antisepsis still using oiliness alkyd paint, mixed paint, thermoplastic acrylic paint, The products such as synthetic enamel, such products characteristics are:Price is low, poor adhesive force, antiseptic property is poor, construction process requirement is not high, While the defects of fatal, is:Pollution environment (toxic and harmful gas), weatherability is poor, does not have self-repairing capability, can only conduct The painting design of provisional or low antiseptic property requirement.
And water paint is the technology to grow up in the sixties in last century, with water as solvent, saves vast resources;Water Fire risk when property coating eliminates construction, reduces to atmosphere pollution, water paint is only with a small amount of hypotoxicity alcohol ethers Organic solvent improves operating environmental condition, but for a long time, traditional water-based anticorrosive paint in addition to being good for the environment, other Performance not as good as in solvent type anticorrosive paint, and water-based anticorrosive paint is stronger to the dependence of construction environment, poor adhesive force, painting The alkaline-resisting acid corrosion-resistant performance of film is poor and without self-repair function.
Utility model content
To solve the technical issues of above-mentioned, it is alkaline-resisting that the present invention proposes a kind of low VOC of aqueous product, strong adhesive force, film The anticorrosive paint that acid corrosion-resistant performance is strong, self-reparing capability is strong.
The present invention proposes a kind of aqueous polyurethane anticorrosive paint, is made of the component of following parts by weight:Nano modification water 42-49 parts of polyurethane resin of property, 0.07-0.21 parts of antifoaming agent, 0.07-0.28 parts of moistening flatting agent, coalescents 3.5-5.6 Part, 0.35-0.49 parts of dispersant, anti-0.07-0.21 parts of flash rusting agent, 21-28 parts of anticorrosive pigment/filler, thickening leveling agent 0.14-0.7 The sum of part, 3.5-14 parts of ionized water, 20-30 parts of curing agent, more than constituent mass percentage composition are 100%.
Preferably, the base-material of the aqueous polyurethane anticorrosive paint is the special modified aqueous polyurethane resin of nano material (lotion).Polyaminoester emulsion through nano modification has stronger penetrating power, self-repair function.
Preferably, the antifoaming agent of the aqueous polyurethane anticorrosive paint is polysiloxane mixture class antifoaming agent or organosilicon One kind or compounding of class antifoaming agent.So that during preparing coating, emulsion dispersion speed is fast, and defoaming is fast, and the suds time is long.
Preferably, the moistening flatting agent of the aqueous polyurethane anticorrosive paint is polyester resin change properties of organic silicon class moistening flatting agent With one or two kinds of complex role of acetylenic glycols ethoxy base class moistening flatting agent.Two kinds of moistening flatting agents are mutually coordinated, different Molecular structure and lotion difference chain reaction, reduce surface tension, excellent wetting levelling effect strongly, and prevent shrinkage cavity and Increase surface slip.
Preferably, the coalescents of the aqueous polyurethane anticorrosive paint are dipropylene class coalescents and second two One or two kinds of complex role of alcohol only son's ethers coalescents.Certain point can be significantly promoted using a kind of coalescents Function and effect, and complementary effect raising mass action effect can be reached by being used in compounding.Being used in compounding for above-mentioned coalescents can The minimum film formation temperature of film is effectively reduced, so that can be in temperature compared with being used under low environment.
Preferably, the dispersant of the aqueous polyurethane anticorrosive paint is ammonium polyacrylate salt dispersant and polycarboxylic acids At least one of sodium salt dispersant.With splendid molecular weight and the molecular weight distribution being rather narrow, with entire coating system Compatibility is fine, is formed uniformly absorption electric double layer in surface of material, reduces the secondary flocculated trend of pigment particles, so as to improve The storage stability of coating.
Preferably, the anti-flash rusting agent of the aqueous polyurethane anticorrosive paint is the anti-flash rusting agent of organic acid sodium salt class.It is organic The anti-flash rusting agent of acid sodium-salt class can prevent the surface of ferrous metal ground that cathodic chemical reaction occurs, and prevent the ionization of iron, so as to Iron is avoided to be aoxidized by the oxygen in air.
Preferably, the aqueous polyurethane anticorrosive paint anticorrosive pigment/filler is titanium dioxide, talcum powder, ferrophosphorus powder, precipitates Certain several color stuffings than arranging of barium sulfate, silica flour and lithopone are used in compounding.
Preferably, the aqueous polyurethane anticorrosive paint is the non-ionic thickening leveling agent that hydrophobic grouping is modified. Shear viscosity is can effectively improve, assigns coating excellent flowing, levelability and covering effect, reaches uniform into film thickness Degree and paint film richness.
Preferably, the curing agent of the aqueous polyurethane anticorrosive paint is isophorone diisocyanate class curing agent.
The present invention is a kind of aqueous polyurethane anticorrosive paint, mainly using steel structural roof, heat distribution pipe network, gas ductwork, Water utilities pipe network.For coating with nanometer modified aqueous polyurethane resin (lotion) for base-material, the bottom surface of two-component crosslinking film forming is general poly- Urethane anticorrosive paint.Nano material gives precoat extremely strong self-repair function, and meeting soda acid or metal oxide can be quickly generated New protective film.The low VOC of product, strong adhesive force, film-forming temperature are low, the alkaline-resisting acid corrosion-resistant performance of film is strong, have it is superpower from Repair ability.
Specific embodiment
Disclosed above is only several specific embodiments of invention, but the present invention is not limited to this, any this field Technical staff can think variation should all fall into protection scope of the present invention.
Implementation column 1
(1) present invention is a kind of aqueous polyurethane anticorrosive paint, is made of the component of following parts by weight:It is nanometer modified aqueous 42-49 parts of polyurethane resin, 0.07-0.21 parts of antifoaming agent, 0.07-0.28 parts of moistening flatting agent, 3.5-5.6 parts of coalescents, 0.35-0.49 parts of dispersant, anti-0.07-0.21 parts of flash rusting agent, 21-28 parts of anticorrosive pigment/filler, 0.14-0.7 parts of thickening leveling agent, The sum of 3.5-14 parts of ionized water, 20-30 parts of curing agent, more than constituent mass percentage composition are 100%.
(2) polyurethane resin is put into reaction kettle and stirred, after stirring evenly, PH is adjusted with multifunctional assistant AMP-95 It is worth to 8-9.
(3) dipropylene class coalescents or the one or two kinds of of ethylene glycol monobutyl ether class coalescents are answered It fits over and whole coalescents is slowly added under (2) reaction kettle rotation status, disperse 5-10 minutes.
(4) antifoaming agent, moistening flatting agent, anti-flash rusting agent with ionized water are uniformly mixed, are slowly added to contorted in middling speed Reaction kettle under state disperses 20-30 minutes.
(5) ionized water, antifoaming agent, coalescents and dispersant can be thrown simultaneously in the aperture time of implementation steps (3) Enter another in cooling device reaction kettle, middling speed rotation is uniformly dispersed.
(6) in reaction kettle of the middling speed rotation equipped with cooling device, titanium dioxide, talcum powder, ferrophosphorus powder, precipitation are sequentially added The one or several kinds of the color stuffings such as barium sulfate, silica flour and lithopone.After mixing, high speed dispersion to fineness is less than 30 μ M, cooling.
(7) slurry cooled down in step (6) is slowly put into the reaction kettle of step (4) middling speed rotation, is dispersed to fineness Less than 30 μm, the speed of rotation is turned down.
(8) thickening leveling agent is added dropwise in the reaction kettle of middling speed rotation, different viscosityes can be adjusted according to different purposes, It is uniformly dispersed.
(9) in the construction process, coating and curing agent are with 4:1 proportioning mixing is constructed afterwards.
The present invention is a kind of aqueous polyurethane anticorrosive paint, mainly using steel structural roof, heat distribution pipe network, gas ductwork, Water utilities pipe network.For coating with nanometer modified aqueous polyurethane resin (lotion) for base-material, the bottom surface of two-component crosslinking film forming is general poly- Urethane anticorrosive paint.Nano material gives precoat extremely strong self-repair function, and meeting soda acid or metal oxide can be quickly generated New protective film.The low VOC of product, strong adhesive force, film-forming temperature are low, the alkaline-resisting acid corrosion-resistant performance of film is strong, have it is superpower from Repair ability.
Disclosed above is only several specific embodiments of the present invention, but the present invention is not limited to this, any this field Technical staff can think changes and improvements should all fall into protection scope of the present invention.

Claims (10)

1. a kind of aqueous polyurethane anticorrosive paint, which is characterized in that the water-repellent preservation metallic paint includes following weight fraction Component:42-49 parts of nanometer modified aqueous polyurethane resin, 0.07-0.21 parts of antifoaming agent, 0.07-0.28 parts of moistening flatting agent, into 3.5-5.6 parts of film auxiliary agent, 0.35-0.49 parts of dispersant, anti-0.07-0.21 parts of flash rusting agent, 21-28 parts of anticorrosive pigment/filler, thickening The sum of 0.14-0.7 parts of levelling agent, 3.5-14 parts of ionized water, 20-30 parts of curing agent, more than constituent mass percentage composition are 100%.
2. aqueous polyurethane anticorrosive paint according to claim 1, which is characterized in that with the special modified water-soluble of nano material Polyurethane resin (lotion) is base-material.
3. aqueous polyurethane anticorrosive paint according to claim 1, which is characterized in that the antifoaming agent is polysiloxanes Mix one kind or compounding of species antifoaming agent or organic silicon antifoaming agent.
4. aqueous polyurethane anticorrosive paint according to claim 1, which is characterized in that the moistening flatting agent is polyester One or two kinds of complex role of modified organic silicon class wetting agent and acetylenic glycols ethoxy base class wetting agent.
5. aqueous polyurethane anticorrosive paint according to claim 1, which is characterized in that the coalescents are dipropyl two One or two kinds of complex role of alcohol butyl ether class coalescents and ethylene glycol monobutyl ether class coalescents.
6. aqueous polyurethane anticorrosive paint according to claim 1, which is characterized in that the dispersant is polyacrylic acid At least one of ammonium salt class dispersant and sodium polycarboxylate salt dispersant.
7. aqueous polyurethane anticorrosive paint according to claim 1, which is characterized in that the anti-flash rusting agent is organic acid The anti-flash rusting agent of sodium salt.
8. aqueous polyurethane anticorrosive paint according to claim 1, which is characterized in that the anticorrosive pigment/filler is titanium white Powder, talcum powder, ferrophosphorus powder, blanc fixe, silica flour and lithopone certain several color stuffings than row compound.
9. aqueous polyurethane anticorrosive paint according to claim 1, which is characterized in that the thickening leveling agent is hydrophobic Group modified non-ionic thickening leveling agent.
10. aqueous polyurethane anticorrosive paint according to claim 1, which is characterized in that the curing agent is different Fo Er Ketone diisocyanates curing agent.
CN201711310322.6A 2017-12-11 2017-12-11 A kind of aqueous polyurethane anticorrosive paint Pending CN108129967A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109233591A (en) * 2018-07-26 2019-01-18 苏州嘉迈德电子科技有限公司 A kind of inoxidzable coating for valve surface
CN109852217A (en) * 2018-12-21 2019-06-07 北京隆源纳欣科技有限公司 A kind of self-cleaning anticorrosive paint of aqueous high weather resistance
CN110144167A (en) * 2019-06-11 2019-08-20 江苏绿带新材料科技有限公司 A kind of aqueous polyurethane metallic elastic texture paint
CN112280458A (en) * 2020-10-28 2021-01-29 广州纳客新材料科技有限公司 Intelligent self-repairing easy-to-clean anti-fouling nano coating and preparation method thereof
CN114231147A (en) * 2021-12-27 2022-03-25 惠州市凯辉化工有限公司 PU (polyurethane) water-based paint for alloy plates of notebook computers and preparation method thereof

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CN107312460A (en) * 2017-07-07 2017-11-03 洛阳双瑞防腐工程技术有限公司 A kind of long-acting type aqueous corrosion resisting paint without need of cleaning rust and preparation method thereof

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CN107118679A (en) * 2017-06-01 2017-09-01 上海应用技术大学 A kind of water-based anticorrosive paint and preparation method thereof
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109233591A (en) * 2018-07-26 2019-01-18 苏州嘉迈德电子科技有限公司 A kind of inoxidzable coating for valve surface
CN109852217A (en) * 2018-12-21 2019-06-07 北京隆源纳欣科技有限公司 A kind of self-cleaning anticorrosive paint of aqueous high weather resistance
CN110144167A (en) * 2019-06-11 2019-08-20 江苏绿带新材料科技有限公司 A kind of aqueous polyurethane metallic elastic texture paint
CN112280458A (en) * 2020-10-28 2021-01-29 广州纳客新材料科技有限公司 Intelligent self-repairing easy-to-clean anti-fouling nano coating and preparation method thereof
CN114231147A (en) * 2021-12-27 2022-03-25 惠州市凯辉化工有限公司 PU (polyurethane) water-based paint for alloy plates of notebook computers and preparation method thereof

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