CN107142002A - A kind of anti-cavitation polyurethane elastomer coat of high-adhesive-strength and preparation method thereof - Google Patents
A kind of anti-cavitation polyurethane elastomer coat of high-adhesive-strength and preparation method thereof Download PDFInfo
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- CN107142002A CN107142002A CN201710431662.8A CN201710431662A CN107142002A CN 107142002 A CN107142002 A CN 107142002A CN 201710431662 A CN201710431662 A CN 201710431662A CN 107142002 A CN107142002 A CN 107142002A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/08—Polyurethanes from polyethers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4854—Polyethers containing oxyalkylene groups having four carbon atoms in the alkylene group
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/75—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic
- C08G18/751—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring
- C08G18/752—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring containing at least one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group
- C08G18/753—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring containing at least one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group containing one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group having a primary carbon atom next to the isocyanate or isothiocyanate group
- C08G18/755—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring containing at least one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group containing one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group having a primary carbon atom next to the isocyanate or isothiocyanate group and at least one isocyanate or isothiocyanate group linked to a secondary carbon atom of the cycloaliphatic ring, e.g. isophorone diisocyanate
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
- C08G18/7614—Polyisocyanates or polyisothiocyanates cyclic aromatic containing only one aromatic ring
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
- C08G18/7657—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings
- C08G18/7664—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups
- C08G18/7671—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups containing only one alkylene bisphenyl group
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/77—Polyisocyanates or polyisothiocyanates having heteroatoms in addition to the isocyanate or isothiocyanate nitrogen and oxygen or sulfur
- C08G18/78—Nitrogen
- C08G18/79—Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates
- C08G18/791—Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates containing isocyanurate groups
- C08G18/792—Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates containing isocyanurate groups formed by oligomerisation of aliphatic and/or cycloaliphatic isocyanates or isothiocyanates
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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
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2150/00—Compositions for coatings
- C08G2150/90—Compositions for anticorrosive coatings
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
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- Engineering & Computer Science (AREA)
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Abstract
A kind of anti-cavitation polyurethane elastomer coat of high-adhesive-strength of the present invention belongs to paint field, the present invention is made up of polyurethane resin and the component of cold cure agent two, the polyurethane resin, it is made up of diisocyanate, dihydric alcohol and polyisocyanates, the cold cure agent is made up of polynary amine polymer, polyhydric alcohol polymer, deicer, adhesion promoter, catalyst and color stuffing；Polyurethane resin and cold cure agent are well mixed by proportioning, using modes such as blade coating, brushing, roller coating and sprayings, it is applied over the hydraulic flow passage components metallic substrate surface by blasting treatment, after dry solidification 24 hours, i.e., the anti-cavitation polyurethane elastomer coat of high-adhesive-strength is obtained on hydraulic flow passage components surface.
Description
Technical field
A kind of anti-cavitation polyurethane elastomer coat of high-adhesive-strength of the present invention and preparation method thereof, belongs to paint field,
Specifically related to no-solvent polyurethane elastomer coatingses.
Background technology
Cavitation erosion is a kind of failure mode of generally existing in waterwork and hydraulic running, and it is rotten that it belongs to abrasion
A kind of special shape of erosion, be due to bubble near flow passage components acutely crumble and fall moment generation high-pressure shocking wave or high speed it is micro-
Jet, high frequency attack flow passage components outer surface, larger plastic deformation locally occurs in outer surface, causes material surface to produce
It is raw broken, form pit and expose new base material.With the increase of cavitation erosion time, pit gradually increases deep, when pit extension
After to a certain extent, flow passage components will be broken, so that the production and living to people cause the economic loss for being difficult to estimate
And casualties.
The serious development for constraining water conservancy machinery and waterwork of cavitation erosion, at present, except utilizing CAD, system
Make and meet hydromechanical flow passage components with outside the service condition for avoiding occurring cavitation phenomenon, can also have by exploitation excellent
The new material of cavitation resistive property, or by being surface-treated to excessively stream position, the combination property of substrate surface is improved, with
Effectively solve the problems, such as the cavitation erosion of flow passage components.
In the last few years, with the development of process for treating surface, and the development with good anti-Cavitation coating, pass through
Process for treating surface drastically increases the anti-cavitation corrosion of flow passage components, extends the service life of flow passage components.Surface laser
Modification, surface plasma modification, thermal spraying on surface, surface carburization and built-up welding etc. are the process for treating surface being commonly used.These
The surface treatment process method for improving anti-cavitation corrosion is complicated, and coating cost is higher, and working environment and operation level are required sternly
Lattice, it is difficult to be used in after large-scale workpiece surface and coating damage, repairing is relatively difficult, it is difficult to promote the use of a large area.
Anti-cavitation macromolecule organic-containing materials price is relatively low, and the applicability to various base materials is good, and site operation is convenient, no
Defective work piece, and the features such as growing, easily repair is imitated with the protection period, receive significant attention.Anti-cavitation polymeric coating material master
There are the rigid epoxy coating and the class of elastic polyurethane coating two of high strength and high hardness.Ceramic powders（Aluminum oxide, carborundum）Increase
Strong epoxy resin type coating has the advantages that adhesive strength is big, hardness is high, flushing resistance good, but its fragility is big, anti-cavitation
Ability is poor, is not suitable for using in the serious occasion of cavitation erosion；Elastic polyurethane coating viscoplasticity is good, can largely absorb cavitation erosion
The high-frequency percussion energy of generation, cavitation resistive property is excellent, while its mechanical strength is high, the function admirable such as wear-resisting, antiscour is reason
The cavitation coating material thought, but such coating material is limited in the bond strength of metallic substrate surface at present, in use, in the presence of
The risk come off.
Publication No. CN106349771A patent of invention《A kind of erosion resistant coating of matrix surface cavitation and its preparation
Method》, a kind of erosion resistant coating of matrix surface cavitation is prepared for using cubic boron nitride, epoxide-resin glue and curing agent,
The coating can be applied to that liquid is solid and the environment of biphase gas and liquid flow convection current in Anti-erosion and anti-cavitation, lifted matrix service life and
Security.Publication No. CN 102020841A patent of invention《Nano-polyurethane elastomer and preparation method thereof and entered with it
The wear-resistant etching method of row》There is provided a kind of anti-sky for improving power station flow passage components, hydraulic engineering affiliated facility and mining machinery
Corrosion energy, abrasion resistance, the nano-polyurethane elastomer of water resistance and resilience extension property, resist the coating with good
Can, good abrasion resistance, the polyurethane vulcanization that excellent water resistance and good resilience, extension property, but coating are used
Agent MOCA is powdered, polyurethane need to be heated to 100 DEG C, workpiece heat needs heat preservation solidification, operation difficulty to 50 DEG C of constructions
Larger, construction quality is difficult to ensure that.
The content of the invention
It is an object of the invention to provide a kind of anti-cavitation polyurethane elastomer coat of high-adhesive-strength and its preparation side
Method, it is the polyurethane elastomer coat normal temperature construction, normal temperature cure, adhesive strength big, the married operation time length of two components, rear solid
Change the advantages of speed is fast, constructing operation is simple, cohesive strength is high, elasticity is good, service life is long, using in hydraulic flow passage
Part surface, effectively solves the problems, such as cavitation erosion and the erosion attack of flow passage components.
The purpose of the present invention is achieved through the following technical solutions：
First, the anti-cavitation polyurethane elastomer coat of a kind of high-adhesive-strength of the invention, by polyurethane resin and cold cure agent two
Component is constituted, by mass, and its polyurethane resin is 100 parts, and cold cure agent is 80~120 parts, by the proportioning, by polyurethane
Resin is mixed evenly with cold cure agent, using modes such as brushing, roller coating and blade coatings, is applied over metal hydraulic flow passage
Part surface, i.e., obtain the anti-cavitation polyurethane elastomer coat of high-adhesive-strength on hydraulic flow passage components surface, described poly-
Urethane resin, its component formula by mass is as follows：
35~45 parts of diisocyanate；
3~6 parts of polyisocyanates；
40~60 parts of dihydric alcohol；
The isocyanates is methylenebis phenyl isocyanate（MDI）, toluene di-isocyanate(TDI)（TDI）, the isocyanide of isophorone two
One kind in acid esters IPDI or two kinds；
The polyisocyanates is HDI trimer；
The dihydric alcohol is PTMG PTMG1000；
The cold cure agent, its component formula by mass is as follows：
Polynary 15~25 parts of amine polymer；
55~70 parts of polyhydric alcohol polymer；
3~4 parts of deicer；
0.2~0.5 part of adhesion promoter；
0.02~0.06 part of catalyst；
1~2 part of color stuffing.
The polynary amine polymer is 4,4'- di-secondary fourth aminodiphenylmethanes (MBDA), dimethythiotoluene diamine
（DMTDA）With one kind in diethyl toluene diamine (DETDA)；
The polyhydric alcohol polymer is PTMG PTMG2000；
The deicer is the lagoriolite powder of the mesh of the mesh of particle size 600~1000；
The adhesion promoter is amino silicane coupling agent；
The catalyst is organozinc catalyst；
The color stuffing is conventional coloring pigment.
2nd, a kind of preparation method of the anti-cavitation polyurethane elastomer coat of high-adhesive-strength of the invention is：
（1）Diisocyanate is added in reactor, by mass composition weigh dihydric alcohol, under agitation, be slowly added to
In diisocyanate, after after temperature stabilization, being heated to 75 DEG C, stirring insulation reaction 1.5 hours is cooled to after normal temperature, by quality
Meter composition adds polyisocyanates, and polyurethane resin is made.
（2）Constitute by mass, by polynary amine polymer, polyhydric alcohol polymer, deicer, adhesion promoter, catalysis
Agent, color stuffing are added in dispersion tank, and high-speed stirred is uniformly dispersed, and cold cure agent is made.
3rd, a kind of application method of the anti-cavitation polyurethane elastomer coat of high-adhesive-strength of the invention is：
Matched according to quality meter, polyurethane resin is well mixed with cold cure agent, using blade coating, brushing, roller coating and spraying etc.
Mode, is applied over the metal hydraulic flow passage components surface by blasting treatment, dry solidification is after 24 hours, i.e., in water engineer
Tool flow passage components surface obtains the anti-cavitation polyurethane elastomer coat of high-adhesive-strength.
A kind of anti-cavitation polyurethane elastomer coat of high-adhesive-strength of the present invention uses diisocyanate and dihydric alcohol pre-reaction
Be prepared into polyurethane prepolymer, the mode for then adding polyisocyanates is prepared into polyurethane resin, polyisocyanates with it is cold
There is provided cross-linked structure node when vulcanizing agent reacts, the polyurethane elastomer of excellent in mechanical performance is obtained, so that with excellent
Cavitation resistive property, while polyisocyanates has diluting effect to polyurethane resin under which, it is possible to decrease polyurethane resin
Viscosity, wettability of the resin in substrate surface is favorably improved, so as to improve the adhesive strength of coating.And conventional acquisition office
The method of portion's cross-linked structure, is that trihydroxylic alcohol is added during polyurethane prepolymer is prepared, polyurethane resin prepared by which
Viscosity is increased, and is unfavorable for the wetting of construction and resin in substrate surface, and the bond strength for preparing elastomer coating is low.
The present invention uses the polynary amine polymer of high activity low molecule amount and the polyhydric alcohol polymer of low activity HMW
As cold cure agent, the polynary amine polymer of high activity low molecule amount provides high intensity, and the polyalcohol of low activity HMW gathers
Compound provides high resiliency, and the use of low activity polyalcohol can make the cold cure agent of preparation and polyurethane resin have longer mixing
Operation phase, and moderate gel time, cold cure agent is set to have the wetting of abundance in substrate surface with polyurethane resin mixture
Time, so as to improve adhesive strength of the elastomer coating in substrate surface；Organozinc catalyst with solidify afterwards catalytic effect
Add, in the case where not reducing married operation phase and gel time, can effectively accelerate the cured later speed of coating, make poly- ammonia
Ester elastomer at normal temperatures can rapid curing.In addition, the present invention adds amino silicane coupling agent in cold cure agent, its chemistry
Contained active function groups amino can react with the isocyanates in polyurethane resin in structure, chemical bonding be formed, in film forming
During, the oxide skin formation Hydrogenbond that the silane epoxide in coupling agent can be with metallic substrate surface, so as to significantly strengthen bullet
Adhesive strength of the property body coating in metallic substrate surface.The molecular sieve powder acted on water removal is added in cold cure agent prescription,
The moisture content that cold cure agent absorbs can be avoided to be reacted with polyurethane resin, the mechanical property of polyurethane elastomer is reduced.Present invention system
Standby polyurethane resin and cold cure agent viscosity is smaller, and mixing working life is long, can brush, scratch, roller coating and double component solvent-free
The mode of spray gun spraying is constructed.
After the anti-cavitation polyurethane elastomer coat film forming of high-adhesive-strength of the present invention, it is with carbon steel, stainless steel and
Bond strength >=10MPa of composite material surface；Polyurethane elastomer body tensile strength >=35MPa, elongation at break >=
350%；Magnetostriction cavitation test 160 hours, no destruction；Anti-cavitation and the Anti-erosion protection of flow passage components can effectively be realized.
Embodiment
The present invention is further illustrated by the following examples.
Embodiment 1：
Constitute by mass, take diisocyanate（MDI）35 parts, it is added in reactor, under agitation, by dihydric alcohol
（PTMG1000）40 parts are slowly added into reactor, after after temperature stabilization, being heated to 75 DEG C, stir insulation reaction 1.5 hours,
Normal temperature is cooled to, polyisocyanates is added（3390）3 parts, it is mixed evenly, obtains polyurethane resin.
Constitute by mass, by polynary amine polymer（MBDA）15 parts, polyhydric alcohol polymer（PTMG2000）55 parts, water removal
Agent（600 mesh lagoriolites）3 parts, adhesion promoter（KH550）0.2 part, catalyst（Organic zinc KRZN1）0.02 part and pigment
（Titanium dioxide）1 part is added in dispersion tank, scattered at a high speed to stir, and obtains cold cure agent.
It is uniformly mixed for 80 parts with cold cure agent in use, constituting 100 parts of polyurethane resin by mass, using scraping
The mode applications such as painting, brushing and roller coating.
After curing of coating is dried, anti-cavitation polyurethane elastomer tensile strength 36MPa, elongation at break 420%, with metal
The bond strength of base material is up to 11.24MPa, magnetostriction cavitation test 160 hours, no destruction；Flow passage components can effectively be realized
Anti-cavitation and Anti-erosion protection.
Embodiment 2：
Constitute by mass, take diisocyanate（TDI）45 parts, it is added in reactor, under agitation, by dihydric alcohol
（PTMG1000）60 parts are slowly added into reactor, after after temperature stabilization, being heated to 75 DEG C, stir insulation reaction 1.5 hours,
Normal temperature is cooled to, polyisocyanates is added（3390）6 parts, it is mixed evenly, obtains polyurethane resin.
Constitute by mass, by polynary amine polymer（DMTDA）25 parts, polyhydric alcohol polymer（PTMG2000）70 parts, remove
Aqua（1000 mesh lagoriolites）4 parts, adhesion promoter（KH550）0.5 part, catalyst（Organic zinc KRZN1）0.062 part and
Pigment（Carbon black）2 parts are added in dispersion tank, scattered at a high speed to stir, and obtain cold cure agent.
It is uniformly mixed for 120 parts, uses with cold cure agent in use, constituting 100 parts of polyurethane resin by mass
The mode applications such as blade coating, brushing and roller coating.
After curing of coating is dried, anti-cavitation polyurethane elastomer tensile strength 42MPa, elongation at break 390%, with metal
The bond strength of base material is up to 12.36MPa, magnetostriction cavitation test 160 hours, no destruction；Flow passage components can effectively be realized
Anti-cavitation and Anti-erosion protection.
Embodiment 3：
Constitute by mass, take diisocyanate（TDI）30 parts, diisocyanate（IPDI）5 parts, it is added in reactor,
Under stirring, by dihydric alcohol（PTMG1000）50 parts are slowly added into reactor, after after temperature stabilization, being heated to 75 DEG C, stir
Insulation reaction 1.5 hours, is cooled to normal temperature, adds polyisocyanates（3390）4 parts, it is mixed evenly, obtains polyurethane tree
Fat.
Constitute by mass, by polynary amine polymer（DETDA）25 parts, polyhydric alcohol polymer（PTMG2000）70 parts, remove
Aqua（800 mesh lagoriolites）3 parts, adhesion promoter（KH550）0.3 part, catalyst（Organic zinc KRZN2）0.04 part and face
Material（Carbon black）1 part is added in dispersion tank, scattered at a high speed to stir, and obtains cold cure agent.
It is uniformly mixed for 120 parts, uses with cold cure agent in use, constituting 100 parts of polyurethane resin by mass
The mode applications such as blade coating, brushing and roller coating.
After curing of coating is dried, anti-cavitation polyurethane elastomer tensile strength 38MPa, elongation at break 410%, with metal
The bond strength of base material is up to 10.28MPa, magnetostriction cavitation test 160 hours, no destruction；Flow passage components can effectively be realized
Anti-cavitation and Anti-erosion protection.
Claims (5)
1. the anti-cavitation polyurethane elastomer coat of a kind of high-adhesive-strength of the invention, by two groups of polyurethane resin and cold cure agent
Part composition, by mass, its polyurethane resin are 100 parts, and cold cure agent is 80~120 parts, the polyurethane resin, and it presses matter
Gauge component formula is as follows：
35~45 parts of diisocyanate；
3~6 parts of polyisocyanates；
40~60 parts of dihydric alcohol；
The isocyanates is methylenebis phenyl isocyanate（MDI）, toluene di-isocyanate(TDI)（TDI）, the isocyanide of isophorone two
One kind in acid esters IPDI or two kinds；
The polyisocyanates is HDI trimer；
The dihydric alcohol is PTMG PTMG1000；
The cold cure agent, its component formula by mass is as follows：
Polynary 15~25 parts of amine polymer；
55~70 parts of polyhydric alcohol polymer；
3~4 parts of deicer；
0.2~0.5 part of adhesion promoter；
0.02~0.06 part of catalyst；
1~2 part of color stuffing.
2. the anti-cavitation polyurethane elastomer coat of a kind of high-adhesive-strength according to claim 1, it is characterised in that remove
Aqua is the lagoriolite powder of the mesh of the mesh of particle size 600~1000.
3. the anti-cavitation polyurethane elastomer coat of a kind of high-adhesive-strength according to claim 1, it is characterised in that urge
Agent is organozinc catalyst.
4. the anti-cavitation polyurethane elastomer coat of a kind of high-adhesive-strength according to claim 1, it is characterised in that attached
Adhesion promoter is amino silicane coupling agent.
5. a kind of anti-cavitation polyurethane elastomer coat of high-adhesive-strength according to claim 1, it is characterised in that system
Standby step is as follows：
（1）Diisocyanate is added in reactor, by mass composition weigh dihydric alcohol, under agitation, be slowly added to
In diisocyanate, after after temperature stabilization, being heated to 75 DEG C, stirring insulation reaction 1.5 hours is cooled to after normal temperature, by quality
Meter composition adds polyisocyanates, and polyurethane resin is made；
（2）Constitute by mass, by polynary amine polymer, polyhydric alcohol polymer, deicer, adhesion promoter, catalyst, face
Filler is added in dispersion tank, and high-speed stirred is uniformly dispersed, and cold cure agent is made.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109735223A (en) * | 2018-12-29 | 2019-05-10 | 北京东方雨虹防水技术股份有限公司 | A kind of modified double components polyurethane water-proof paint and preparation method thereof |
| CN110183610A (en) * | 2019-05-21 | 2019-08-30 | 哈尔滨工程大学 | A kind of anti-cavitation corrosion elastic polyurethane layer and preparation method thereof |
| JP2020095132A (en) * | 2018-12-12 | 2020-06-18 | 日東電工株式会社 | Processing tank for polarizing film manufacturing, and manufacturing method of polarizing film |
| CN111748272A (en) * | 2020-07-08 | 2020-10-09 | 黄海千 | Preparation method of high cavitation erosion resistance coating |
| CN114672239A (en) * | 2022-04-01 | 2022-06-28 | 吉林大学 | Cavitation-corrosion-resistant and corrosion-resistant multifunctional paint and coating |
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| CN1199073A (en) * | 1997-05-11 | 1998-11-18 | 化学工业部海洋涂料研究所 | Cavitation erosion preventing paint |
| CN102020841A (en) * | 2010-11-10 | 2011-04-20 | 黄河水利委员会黄河水利科学研究院 | Nano-polyurethane (PU) elastomer, preparation method of PU elastomer and abrasion resisting method using PU elastomer |
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Patent Citations (2)
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| CN1199073A (en) * | 1997-05-11 | 1998-11-18 | 化学工业部海洋涂料研究所 | Cavitation erosion preventing paint |
| CN102020841A (en) * | 2010-11-10 | 2011-04-20 | 黄河水利委员会黄河水利科学研究院 | Nano-polyurethane (PU) elastomer, preparation method of PU elastomer and abrasion resisting method using PU elastomer |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2020095132A (en) * | 2018-12-12 | 2020-06-18 | 日東電工株式会社 | Processing tank for polarizing film manufacturing, and manufacturing method of polarizing film |
| CN109735223A (en) * | 2018-12-29 | 2019-05-10 | 北京东方雨虹防水技术股份有限公司 | A kind of modified double components polyurethane water-proof paint and preparation method thereof |
| CN110183610A (en) * | 2019-05-21 | 2019-08-30 | 哈尔滨工程大学 | A kind of anti-cavitation corrosion elastic polyurethane layer and preparation method thereof |
| CN111748272A (en) * | 2020-07-08 | 2020-10-09 | 黄海千 | Preparation method of high cavitation erosion resistance coating |
| CN114672239A (en) * | 2022-04-01 | 2022-06-28 | 吉林大学 | Cavitation-corrosion-resistant and corrosion-resistant multifunctional paint and coating |
| CN114672239B (en) * | 2022-04-01 | 2022-11-18 | 吉林大学 | Cavitation-corrosion-resistant and corrosion-resistant multifunctional paint and coating |
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