CN108659701A - A kind of thixotroping type polyurethane thick-layer coating three-proofing coating - Google Patents
A kind of thixotroping type polyurethane thick-layer coating three-proofing coating Download PDFInfo
- Publication number
- CN108659701A CN108659701A CN201810562175.XA CN201810562175A CN108659701A CN 108659701 A CN108659701 A CN 108659701A CN 201810562175 A CN201810562175 A CN 201810562175A CN 108659701 A CN108659701 A CN 108659701A
- Authority
- CN
- China
- Prior art keywords
- thixotroping
- coating
- agent
- parts
- layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
- C09D175/14—Polyurethanes having carbon-to-carbon unsaturated bonds
-
- 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
-
- 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
- C09D5/14—Paints containing biocides, e.g. fungicides, insecticides or pesticides
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Plant Pathology (AREA)
- Inorganic Chemistry (AREA)
- Paints Or Removers (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The present invention relates to printed circuit board protection technology fields, and in particular to coats three-proofing coating to a kind of thixotroping type polyurethane thick-layer.A kind of thixotroping type polyurethane thick-layer coating three-proofing coating, by weight, including at least following components：40~60 parts of polyurethane resin, 1~10 part of thixotropic agent, 30~35 parts of non-hydrogenated petroleum ether, 10~20 parts of isomery aliphatic alkane, 0.5~3 part of leveling auxiliary agent, 0.5~3 part of antifoaming agent, 0.5~3 part of wetting agent, 0.5~3 part of fire retardant.
Description
Technical field
The present invention relates to printed circuit board protection technology fields, and in particular to is coated to a kind of thixotroping type polyurethane thick-layer
Three-proofing coating.
Background technology
Three-proofing coating is widely used in electronic electric equipment wiring board anti-corrosion protection, such as intelligent appliance, automotive electronics, frequency conversion work
Control, military project ship, outdoor precision equipment etc..Protection circuit plate is from external environment (humidity, mould, salt fog, Gao Chen, vibrations, corruption
Corrosion gas etc.) corrosion, improve product reliability, increase coefficient safe to use.
Three-proofing coating coating can be divided into thin layer coating according to the difference of coating thickness and thick-layer coats.Usually, anti-corrosion effect
Enhance with the increase of coating thickness.Current three proofings coating material mainly has acrylic compounds, epoxies, polyurethanes etc., by
It is small in conventional three-proofing coating viscosity, mobility it is big, it can be achieved that coating thickness of dry film be usually 25~75 μm, as thin layer applies
It covers, is only wiring board and basic protective action is provided.The field that can not meet is coated for thin layer, it can be thick by increasing coating
It spends (100~200 μm of dry film) and realizes higher anti-corrosion.
Thick-layer coating three-proofing coating is mainly used for wiring board high reliability corrosion-resistant field, such as：1) high corrosion-resistant field：Military project system
System, communication apparatus, outdoor precision equipment (charging pile, communication base station) etc..2) bad environments：What is used in harsh environment sets
It is standby, it needs to meet high requirement for anticorrosion.Mine, seashore face the environment such as dust, moisture, salt fog, dust storm sleet；Automobile electricity
Sub (sleet dust storm etc.)；3) sensitive components：At wiring board stitch/pin：Due to pin structure there are capillary percolation phenomenon and
The gravity of glue itself causes kiss-coating at stitch difficult, and thin layer coating is unable to reach ideal anti-corrosion effect；Particular components
(at fan mouth etc.)：High fever, dust are big.
In order to realize the coating requirement of high corrosion-resistant field product, existing process conditions mainly reach requirement by repeatedly constructing
Thickness (usually using secondary coating processes).But existing secondary coating processes there are the problem of, such as：1) drying time is long,
Low production efficiency：Secondary coating i.e. coating two times, subsequent coated process needs to wait for the last time and is completely dried and can operate.Usual 50
μm thickness of dry film, 80 DEG C are completely dried and need 3~5h, are needed 1~2 day under room temperature；100 μm of coating thickness are realized by secondary coating,
80 DEG C are completely dried and at least need 8~10h, are needed under room temperature 3~5 days, significantly extend the construction time.2) bottom solvent volatilizees not
Thoroughly, entrapped air pockets are easily corroded：If the first secondary coating it is uncured completely i.e. can remaining have solvent, when continue coat the second layer
Afterwards, the solvent of bottom remaining can not evaporate in the curing process, and bubble is generated between two layers of coatings, and the presence of bubble increases
Anti-corrosion factor, directly affects coating reliability；3) coating is incompatible：Applied in two coats can cause to apply the incompatible of interlayer, easily go out
Existing lamination, influences reliability.
In view of the above technical problems, the present invention provides a kind of thixotroping type polyurethane thick-layers to coat three-proofing coating, with low
Viscosity, high thixotropic can facilitate realization spraying and gluing process, facilitate construction.
Invention content
In order to solve the above-mentioned technical problem, the first aspect of the invention provides a kind of thixotroping type polyurethane thick-layer coating
Three-proofing coating includes at least following components by weight：40~60 parts of polyurethane resin, 1~10 part of thixotropic agent, non-hydrogenated petroleum
30~35 parts of ether, 10~20 parts of isomery aliphatic alkane, 0.5~3 part of leveling auxiliary agent, 0.5~3 part of antifoaming agent, wetting agent 0.5~
3 parts, 0.5~3 part of fire retardant.
As a kind of preferred technical solution of the present invention, the thixotroping type polyurethane thick-layer coats three-proofing coating, by weight
Part meter, includes at least following components：45~55 parts of polyurethane resin, 2~6 parts of thixotropic agent, 30~35 parts of non-hydrogenated petroleum ether, isomery
It is 15~20 parts of aliphatic alkane, 0.5~1.6 part of leveling auxiliary agent, 0.5~1.2 part of antifoaming agent, 0.5~0.9 part of wetting agent, fire-retardant
0.8~2 part of agent.
As a kind of preferred technical solution of the present invention, the polyurethane resin is vegetable oil based polyurethane resin.
As a kind of preferred technical solution of the present invention, the mass ratio of the non-hydrogenated petroleum ether and isomery aliphatic alkane
It is 1.5~3.5：1.
As a kind of preferred technical solution of the present invention, the vegetable oil is selected from castor oil, soybean oil, rapeseed oil, Portugal
At least one of grape seed oil, palm oil, olive oil, sunflower oil.
As a kind of preferred technical solution of the present invention, the thixotropic agent is rilanit special, aerosil, gathers
At least one of amide waxe, organobentonite, modified urea solution, polyethylene wax.
As a kind of preferred technical solution of the present invention, the wetting agent is selected from the acid or more of lecithin, long chain polyester
Amide, the salt of polyamide and acid ester, polybasic carboxylic acid or its amine salt, polysiloxanes and polyether block copolymer, special ethylene
At least one of Type of Collective object or coupling agent, modified polyurethane.
As a kind of preferred technical solution of the present invention, the fire retardant is selected from three (2- carboxyethyls) phosphines, tricresyl phosphate (2-
Chloropropyl) ester, tricresyl phosphate (bis- chloropropyls of 1,3-) ester, dimethyl methyl phosphonate, ammonium polyphosphate, triphenyl phosphate, melamine
At least one of Quadrafos, zinc borate, pentaerythrite.
The second aspect of the invention provides the preparation method of the thixotroping type polyurethane thick-layer coating three-proofing coating, until
Include the following steps less：
By weight, non-hydrogenated petroleum ether, isomery aliphatic alkane, fire retardant are added in vacuum kneader, in temperature
110~130 DEG C, vacuum degree is -0.06~-0.099MPa, and 1~2h is blended in dehydration, cooling, be added thereto polyurethane resin,
Thixotropic agent, leveling auxiliary agent, wetting agent, antifoaming agent, in vacuum degree be -0.06~-0.099MPa, 80 DEG C hereinafter, stirring 1~2h,
It is uniformly mixed and coats three-proofing coating up to the thixotroping type polyurethane thick-layer.
The third aspect of the invention provides the thixotroping type polyurethane thick-layer coating three-proofing coating and is used for military electronic
The protection of equipment, control panel, electronic instrument sanitary bath equipment, electrical home appliances electric appliance, LED, automobile electrically-controlled part, PCB circuit board
Coating.
The above-mentioned of the application and other features, aspect and advantage is more readily understood with reference to following detailed description.
There is the thixotroping type polyurethane thick-layer coating three-proofing coating of the present invention low viscosity, high thixotropic realization can be facilitated to spray
And gluing process, facilitate construction.It can be used for military electronic equipment, control panel, electronic instrument sanitary bath equipment, electrical home appliances electricity
Device, LED, automobile electrically-controlled part, the protective coating of PCB circuit board, encapsulating material, protection adhesive.
Description of the drawings
Fig. 1 is the rheological curve that the thixotroping type polyurethane thick-layer that embodiment 5 is prepared coats three-proofing coating.
Specific implementation mode
The detailed description for preferred implementation method of the invention below of participating in the election of and including embodiment this hair can be more easily understood
Bright content.Unless otherwise defined, all technologies used herein and scientific terminology have common with fields of the present invention
The normally understood identical meaning of technical staff.When there is a conflict, the definition in this specification shall prevail.
As used herein term " by ... prepare " it is synonymous with "comprising".Term "comprising" used herein, " comprising ",
" having ", " containing " or its any other deformation, it is intended that cover non-exclusionism includes.For example, the combination comprising listed elements
Object, step, method, product or device are not necessarily limited to those elements, but may include not expressly listed other elements or
Such composition, step, method, product or the intrinsic element of device.
Conjunction " Consists of " excludes any element that do not point out, step or component.If in claim, this
Phrase will make claim be closed, so that it is not included the material in addition to the material of those descriptions, but relative normal
Except rule impurity.When being rather than immediately following after theme in the clause that phrase " Consists of " appears in claim main body,
It is only limited to the element described in the clause；Other elements are not excluded except the claim as a whole.
Equivalent, concentration or other values or parameter are excellent with range, preferred scope or a series of upper limit preferred values and lower limit
When the Range Representation that choosing value limits, this, which should be understood as, specifically discloses by any range limit or preferred value and any range
Any pairing of lower limit or preferred value is formed by all ranges, regardless of whether the range separately discloses.For example, when open
When range " 1 to 5 ", described range should be interpreted as including range " 1 to 4 ", " 1 to 3 ", " 1 to 2 ", " 1 to 2 and 4 to
5 ", " 1 to 3 and 5 " etc..When numberical range is described herein, unless otherwise stated, otherwise range intention includes its end
Value and all integers and score in the range.
Singulative includes that plural number discusses object, unless the context clearly dictates otherwise." optional " or it is " arbitrary
It is a kind of " refer to that the item described thereafter or event may or may not occur, and the description include situation that event occurs and
The situation that event does not occur.
Approximate term in specification and claims is used for modifying quantity, and it is specific to indicate that the present invention is not limited to this
Quantity further includes the modified part of the acceptable change without lead to related basic function close to the quantity.Phase
It answers, modifies a numerical value with " about ", " about " etc., mean that the present invention is not limited to the exact numericals.In some examples, approximate
Term likely corresponds to the precision of the instrument of measured value.In present specification and claims, range limits can be with
Combination and/or exchange, these ranges include all subranges contained therebetween if not stated otherwise.
In addition, indefinite article "an" before element of the present invention or component and "one" quantitative requirement to element or component
(i.e. occurrence number) unrestriction.Therefore "one" or "an" should be read as including one or at least one, and odd number
The element or component of form also include plural form, unless the apparent purport of the quantity refers to singulative.
" polymer " means the polymerizable compound prepared by the monomer by the identical or different type of polymerization.Generic term
" polymer " includes term " homopolymer ", " copolymer ", " terpolymer " and " copolymer ".
" copolymer " means the polymer prepared by polymerizeing at least two different monomers.Generic term " copolymer " includes
(it is general with term " terpolymer " for term " copolymer " (its generally to refer to the polymer prepared by two kinds of different monomers)
To refer to the polymer prepared by three kinds of different monomers).It also includes the polymerization manufactured by polymerization four or more monomer
Object." blend " means the polymerization that two or more polymer is formed by mixing jointly by physics or chemical method
Object.
In order to solve the above-mentioned technical problem, the first aspect of the invention provides a kind of thixotroping type polyurethane thick-layer coating
Three-proofing coating includes at least following components by weight：40~60 parts of polyurethane resin, 1~10 part of thixotropic agent, non-hydrogenated petroleum
30~35 parts of ether, 10~20 parts of isomery aliphatic alkane, 0.5~3 part of leveling auxiliary agent, 0.5~3 part of antifoaming agent, wetting agent 0.5~
3 parts, 0.5~3 part of fire retardant.
As a kind of preferred technical solution of the present invention, the thixotroping type polyurethane thick-layer coats three-proofing coating, by weight
Part meter, includes at least following components：45~55 parts of polyurethane resin, 2~6 parts of thixotropic agent, 30~35 parts of non-hydrogenated petroleum ether, isomery
It is 15~20 parts of aliphatic alkane, 0.5~1.6 part of leveling auxiliary agent, 0.5~1.2 part of antifoaming agent, 0.5~0.9 part of wetting agent, fire-retardant
0.8~2 part of agent.
As a kind of preferred technical solution of the present invention, the thixotroping type polyurethane thick-layer coats three-proofing coating, by weight
Part meter, includes at least following components：49 parts of polyurethane resin, 5 parts of thixotropic agent, 32 parts of non-hydrogenated petroleum ether, isomery aliphatic alkane
16 parts, 1.3 parts of leveling auxiliary agent, 0.8 part of antifoaming agent, 0.6 part of wetting agent, 1 part of fire retardant.
As a kind of preferred technical solution of the present invention, the polyurethane resin is vegetable oil based polyurethane resin.
As a kind of preferred technical solution of the present invention, the vegetable oil is selected from castor oil, soybean oil, rapeseed oil, Portugal
At least one of grape seed oil, palm oil, olive oil, sunflower oil.
As a kind of preferred technical solution of the present invention, the polyurethane resin is polyurethane based on castor oil resin.
As a kind of preferred technical solution of the present invention, the preparation method of the polyurethane resin includes at least following
Step：
A. the vegetable oil of 60~100 parts by weight is added in the reaction vessel, stirring is warming up to 100~130 DEG C, and vacuum is-
2~3h is dehydrated under conditions of 0.01MPa；
B. 60~80 DEG C are cooled the temperature to, 10~25 parts by weight methyl diphenylene diisocyanates and 5~20 weight are added
The solvent of part reacts 2~3h under 60~100 DEG C of stirrings；
C. 50~60 DEG C are cooled the temperature to, the polymerization inhibitor of 0.1~1 parts by weight, the amino chemical combination of 0.1~1 parts by weight is added
Object reacts 2~3h under 55~65 DEG C of stirrings；
D. cool the temperature to 50~60 DEG C, be added 0.2~1 part by weight of catalyst, 0.1~3 parts by weight auxiliary agent, stirring 1
~2h after being uniformly dispersed, is cooled to 30~40 DEG C, nitrogen filled protection, discharging obtains the polyurethane resin.
The Caspor Oil formula is C54H107O9, specification is that analysis is pure, is purchased from Sigma-Aldrich.
As a kind of preferred technical solution of the present invention, the methyl diphenylene diisocyanate is selected from pure MDI, liquefaction
At least one of MDI, MDI-50.
The pure MDI refers to that pure methyl diphenylene diisocyanate, the liquefied mdi refer to carbodiimides
Modified isocyanate.
As a kind of preferred technical solution of the present invention, the solvent be selected from solvent naphtha, ethyl acetate, butyl acetate,
At least one of acetone, methyl ethyl ketone.
As a kind of preferred technical solution of the present invention, the polymerization inhibitor is selected from phosphoric acid, tartaric acid, chlorobenzoyl chloride, benzene
At least one of formic acid.
As a kind of preferred technical solution of the present invention, the amino-compound is selected from diaminodiphenyl ether, two amidos
At least one of dicyclohexyl methyl hydride, malonamide, diethanol amine.
As a kind of preferred technical solution of the present invention, it is sub- that the catalyst is selected from dibutyl tin laurate, octanoic acid
Tin, isooctyl acid lead organo-metallic catalyst or fatty amines, alicyclic ring amine, aromatic amine and alcamines and its ammonium salt compounds
One or more kinds of mixtures of catalyst.
As a kind of preferred technical solution of the present invention, the auxiliary agent is selected from plasticizer, antioxidant, anti-settling agent, coupling
At least one of agent, ultra-violet absorber, ultra-violet stabilizer.
As a kind of preferred technical solution of the present invention, the plasticizer is selected from dioctyl phthalate, adjacent benzene two
At least one of formic acid dinonyl, chlorinated paraffin, citric acid ester plasticizer etc..
The plasticizer is good with polyurethane compatibility, and stability and concertedness are notable.
The antioxidant be selected from 1010 (four [β-(3,5- di-tert-butyl-hydroxy phenyls) propionic acid] pentaerythritol esters) or
At least one of 2,6- toluene di-tert-butyl phenols (BHT).
The ultra-violet absorber includes salicylic acid esters, benzophenone class, benzotriazole, substitution propylene cyanogen class, triazine
Class etc..Such as the product of Qing Te companies：UV-3638、UV-2337、UV-5365、UV-5411、UV-24、UV-531、UV-9、UV-
1084, UV-1164 etc.；Ciba product：Tinuvin P、Tinuvin 1130、Tinuvin 99-2、Tinuin 928、
Tinuvin 326, Tinuvin 327, Tinuvin 329 etc..
The ultra-violet stabilizer is generally hindered amine light stabilizer.Such as cyanogen spy's Products：UV-3346、UV-
3529, UV-3581, UV-3853, UV-3853S, UV-2908 etc.；Ciba product：Tinuvin 770、Tinuvin 292、
Tinuvin 5050, Tinuvin 5055, Tinuvin 5151, Tinuvin 5060 etc..
Vegetable oil resource is abundant, cheap, and degree of functionality is high, and excellent using polymer performance prepared by vegetable oil.
The polyurethane of the present invention is prepared by vegetable oil-based polyols and diisocyanate copolymerization.Vegetable oil based polyurethane material is not only
Mechanical performance can compare favourably with petroleum based material, and resistance to thermal decomposition and thermal oxidation are more preferably, and cost is lower.Vegetable oil
Contain long-chain fat chain on polylol main chain, and aliphatic chain has the ability of outstanding barrier moisture, while having concurrently outstanding
Weatherability, while the introducing of vegetable oil-based polyols enhances polyurethane resin in non-hydrogenated petroleum ether and isomery aliphatic alkane etc.
Dispersibility in solvent.Amino-compound in the polyurethane resin of the present invention can be reacted with isocyanates, given
The polyurea compound containing a large amount of urea groups with specific molecular structure, the change are generated under the case where polymerization inhibitor and preparation temperature
It closes object and forms a large amount of hydrogen bonds with liquid polyurethane, form paste to sharply increase system static viscosity, static viscosity is drastically
Increase, dynamic viscosity is basically unchanged, and viscosity reduces rapidly under external force, is conducive to construct, while having good thixotroping
Type.
As a kind of preferred technical solution of the present invention, the thixotropic agent is rilanit special, aerosil, gathers
At least one of amide waxe, organobentonite, modified urea solution, polyethylene wax.
As a kind of preferred technical solution of the present invention, the thixotropic agent is the mixed of aerosil and polyamide wax
Object is closed, the wherein mass ratio of aerosil and polyamide wax is 2：1.
Non-hydrogenated petroleum ether of the present invention refers to removing the petroleum ether of unsaturated hydrocarbon compound.It is furthermore preferred that this
The boiling range of the petroleum ether of invention is 90~120 DEG C, is purchased from Zibo City Linzhou City Dongfanghong chemical plant.
Isomery aliphatic alkane
Isomery aliphatic alkane refers to the solvent that main component is isoparaffin.Isoparaffin and n-alkane (straight chain alkane
Hydrocarbon) it is corresponding, isoparaffin typically refers to branched paraffin.Generally in the production divisions such as oil, petroleum refining, petrochemical industry,
So-called isoparaffin all refers to branched paraffin.It by the fraction to distill the crude oil, can also mainly be obtained by synthesis.
The isomery aliphatic alkane by Porous deproteinized bone handle, can be selected from commercial goods such as Mobil SOPAR-E,
The cosmetics-stage isomery aliphatic alkane LX of ISOPAR-G, ISOPAR-H, ISOPAR-M, ISOPAR-V or Japanese light extraction, 1620,
HX, 2028,3835 etc..Its smell is extremely low, nontoxic nonirritant, good to the polyurethane resin dissolubility of the present invention, can effectively drop
Low product viscosity improves the workability of product.Its key also resides in, isomery aliphatic alkane class solvent, to the solubility of water
It is extremely low, it is present in product, the intrusion of moisture can be effectively obstructed during production, packaging, storage, greatly improves product
Storage stability.After construction, isomery aliphatic alkane will be evaporate by moving to surface in air, not influenced after volatilization
The drying property of product, and the isomery aliphatic alkane is a kind of organic solvent of easily biological-degradable, with addition common solvent
It compares, is more advantageous to and reduces environmental pollution.
As a kind of preferred technical solution of the present invention, the isomery aliphatic alkane is selected from Exxon Mobil
The makeup of SOPAR-C, SOPAR-E, ISOPAR-G, ISOPAR-H, ISOPAR-L, ISOPAR-M, ISOPAR-V or Japanese light extraction
Grade isomery aliphatic alkane LX, 1620, HX, 2028, at least one of 3835.
The isomery aliphatic alkane of the present invention is purchased from Guangzhou Chen Wei Chemical Co., Ltd.s.
As a kind of preferred technical solution of the present invention, the mass ratio of the non-hydrogenated petroleum ether and isomery aliphatic alkane
It is 1.5~3.5：1.
As a kind of preferred technical solution of the present invention, the mass ratio of the non-hydrogenated petroleum ether and isomery aliphatic alkane
It is 2：1.
Present inventors have surprisingly found that when the mass ratio of non-hydrogenated petroleum ether and isomery aliphatic alkane is 2：It is described when 1
Thixotroping type polyurethane thick-layer, which coats three-proofing coating, has optimal stability, and does solid work that the time is short, and paint film adhesion is strong.
As a kind of preferred technical solution of the present invention, the leveling auxiliary agent is selected from solvent type leveling auxiliary agent, acrylic acid
At least one of class leveling auxiliary agent, organic silicon leveling auxiliary agent.
The solvent type leveling auxiliary agent is specifiable high boiling aromatic hydrocarbons, ketone, ester, tetrahydronaphthalene, decahydronaphthalenes etc..
Specifiable Perenol F40 for having Henkel companies of the acrylic compounds leveling auxiliary agent, BYK companies BYK-
Polyacrylate of VP-354, BYK-322,3609 or 3529 etc..
The organic silicon leveling auxiliary agent is specifiable to have silicone oil or the organic-silicon-modified resin, optional trade names to be
Perenol S4, S400 or the S43 of Henkel companies；Or BYK-310, BYK-300, BYK-370, BYK-323 of BYK companies
Deng.
As a kind of preferred technical solution of the present invention, the antifoaming agent is non-silicone mineral oil containing hydrophobic nonionic
Object or modified polyorganosiloxane.
As a kind of preferred technical solution of the present invention, the wetting agent is selected from the acid or more of lecithin, long chain polyester
Amide, the salt of polyamide and acid ester, polybasic carboxylic acid or its amine salt, polysiloxanes and polyether block copolymer, special ethylene
At least one of Type of Collective object or coupling agent, modified polyurethane.
It is EFKA Polymer 400, EFKA that trade names, which can be selected, in the acid or polyamino salt of the long chain polyester
Polymer 401, EFKA Polymer 402, EFKA Polymer 403 etc..
It is EFKA-44 etc. that trade names, which can be selected, in the salt of the polyamide and acid ester.
It is EFKA-54, EFKA-66 or TROYSOL 98C etc. that trade names, which can be selected, in the polybasic carboxylic acid or its amine salt.
It is Polyflow KL-245 etc. that trade names, which can be selected, in the polysiloxanes and polyether block copolymer.
It is EFKA-4010 etc. that trade names, which can be selected, in the modified polyurethane.
As a kind of preferred technical solution of the present invention, the fire retardant is selected from three (2- carboxyethyls) phosphines, tricresyl phosphate (2-
Chloropropyl) ester, tricresyl phosphate (bis- chloropropyls of 1,3-) ester, dimethyl methyl phosphonate, ammonium polyphosphate, triphenyl phosphate, melamine
At least one of Quadrafos, zinc borate, pentaerythrite.
The second aspect of the invention provides the preparation method of the thixotroping type polyurethane thick-layer coating three-proofing coating, until
Include the following steps less：
By weight, non-hydrogenated petroleum ether, isomery aliphatic alkane, fire retardant are added in vacuum kneader, in temperature
110~130 DEG C, vacuum degree is -0.06~-0.099MPa, and 1~2h is blended in dehydration, cooling, be added thereto polyurethane resin,
Thixotropic agent, leveling auxiliary agent, wetting agent, antifoaming agent, in vacuum degree be -0.06~-0.099MPa, 80 DEG C hereinafter, stirring 1~2h,
It is uniformly mixed and coats three-proofing coating up to the thixotroping type polyurethane thick-layer.
The third aspect of the invention provides the thixotroping type polyurethane thick-layer coating three-proofing coating and is used for military electronic
The protection of equipment, control panel, electronic instrument sanitary bath equipment, electrical home appliances electric appliance, LED, automobile electrically-controlled part, PCB circuit board
Coating.
The thixotroping type polyurethane thick-layer coating three-proofing coating of the present invention has resistance to ultraviolet and wet-hot aging performance excellent, adhesive property
It is good, it is not easy to crack, the advantages of performance is stable, Environmental Safety, the three-proofing coating can be used for electronics industry, military electronic equipment,
Control panel, electronic instrument, sanitary bath equipment, electrical home appliances electric appliance, LED, automobile electrically-controlled part, PCB circuit board protective coating,
Encapsulating material, protection adhesive.
Thixotroping type polyurethane thick-layer provided by the invention coats three-proofing coating, so that product is had by the synergistic effect of each component
High thixotropic has the advantages that, it can be achieved that thick-layer coating requirement：
1) polyurethane material, reliability is high, and antiseptic property is excellent；
2) solid content 50% has high thixotropic (thixotropic index 1.2), is suitable for gluing process.
3) dispensing process non-flanged splash phenomena stability is good, and colloid mobility is small after dispensing, primary coating thickness of dry film
80~250 μm are can be achieved, secondary coating can be replaced completely.
4) at for the stitch with certain altitude, it can realize that paint film is completely covered at stitch, solves by gluing process
There are problems that anti-corrosion loophole due to painting mobility and can not cover greatly completely at stitch.
5) viscosity is small (300~500mPas), is suitable for spraying process.Spraying consistency is good, and paint film smooth is without gas
Bubble.
The present invention is specifically described below by embodiment.It is necessarily pointed out that following embodiment is only used
In the invention will be further described, it should not be understood as limiting the scope of the invention, professional and technical personnel in the field
Some the nonessential modifications and adaptations made according to the content of aforementioned present invention, still fall within protection scope of the present invention.
In addition, if without other explanations, it is raw materials used to be all commercially available.
Embodiment 1：
Embodiment 1 provides a kind of thixotroping type polyurethane thick-layer coating three-proofing coating, by weight, including at least with the following group
Point：40 parts of polyurethane resin, 1 part of thixotropic agent, 30 parts of non-hydrogenated petroleum ether, 10 parts of isomery aliphatic alkane, 0.5 part of leveling auxiliary agent,
0.5 part of antifoaming agent, 0.5 part of wetting agent, 0.5 part of fire retardant.
The polyurethane resin is grape seed oil based polyurethanes resin.
The preparation method of the polyurethane resin, at least includes the following steps：
A. the grape seed oil of 70 parts by weight is added in the reaction vessel, stirring is warming up to 120 DEG C, and vacuum is -0.01MPa's
Under the conditions of be dehydrated 2.5h；
B. it cools the temperature to 65~75 DEG C, the molten of 20 parts by weight methyl diphenylene diisocyanates and 15 parts by weight is added
Agent reacts 3h under 80 DEG C of stirrings；
C. 50~60 DEG C are cooled the temperature to, the polymerization inhibitor of 0.2 parts by weight, the amino-compound of 0.4 parts by weight is added, 55
Under~65 DEG C of stirrings, 3h is reacted；
D. cool the temperature to 50~60 DEG C, be added 0.2 part by weight of catalyst, 2 parts by weight auxiliary agent, stir 2h, dispersion is equal
After even, 30 DEG C are cooled to, nitrogen filled protection, discharging obtains the polyurethane resin.
The methyl diphenylene diisocyanate is pure MDI, CAS：101-68-8, purchased from the limited public affairs of Jin Jin pleasure chemistry
Department.The solvent be acetone, methyl ethyl ketone, ethyl acetate mixed solvent, mass ratio 2：2：3.The polymerization inhibitor is
Phosphoric acid, CAS：7664-38-2 is purchased from Sinopharm Chemical Reagent Co., Ltd..The amino-compound is two amido hexichol
Ether, CAS：101-80-4 is purchased from Changzhou Shang Ke medication chemistries Materials Co., Ltd (Guangzhou office).The catalyst is
Dibutyl tin laurate, CAS：77-58-7 is purchased from Sinopharm Chemical Reagent Co., Ltd..The auxiliary agent is antioxidant
And ultra-violet absorber, mass ratio 1：1.The antioxidant is 1010.The ultra-violet absorber is UV-3638.
The thixotropic agent is organobentonite, and the organobentonite is that De Qian companies of the Britain trade mark is BENGEL-
988 product.The isomery aliphatic alkane is the SOPAR-E of Mobil.The leveling auxiliary agent is decahydronaphthalenes.Described
Antifoaming agent is BYK-066N (German BYK chemical companies).The wetting agent is lecithin, CAS：8002-43-5 is purchased from lark
Prestige Science and Technology Ltd..The fire retardant is three (2- carboxyethyls) phosphines, CAS：51805-45-9 is purchased from Sigma-Aldrich
Sigma-Aldrich (Shanghai) trade Co., Ltd.
The preparation method of the thixotroping type polyurethane thick-layer coating three-proofing coating, at least includes the following steps：
By weight, non-hydrogenated petroleum ether, isomery aliphatic alkane, fire retardant are added in vacuum kneader, in temperature
110~130 DEG C, vacuum degree is -0.06~-0.099MPa, and 1~2h is blended in dehydration, cooling, be added thereto polyurethane resin,
Thixotropic agent, leveling auxiliary agent, wetting agent, antifoaming agent, in vacuum degree be -0.06~-0.099MPa, 80 DEG C hereinafter, stirring 1~2h,
It is uniformly mixed and coats three-proofing coating up to the thixotroping type polyurethane thick-layer.
Embodiment 2：
Embodiment 2 provides a kind of thixotroping type polyurethane thick-layer coating three-proofing coating, by weight, including at least with the following group
Point：40 parts of polyurethane resin, 35 parts of non-hydrogenated petroleum ether, 20 parts of isomery aliphatic alkane, 3 parts of leveling auxiliary agent, disappears at 35 parts of thixotropic agent
3 parts of infusion, 3 parts of wetting agent, 3 parts of fire retardant.
The polyurethane resin is grape seed oil based polyurethanes resin.
The preparation method is the same as that of Example 1 for the polyurethane resin.
The methyl diphenylene diisocyanate is Carbodiimide-Modified isocyanates, is purchased from BASF, and the trade mark is
LUPRANATE 5143.The solvent be acetone, methyl ethyl ketone, ethyl acetate mixed solvent, mass ratio 2：2：3.Institute
The polymerization inhibitor stated is chlorobenzoyl chloride, CAS：403-43-0 is purchased from Sinopharm Chemical Reagent Co., Ltd..The amino chemical combination
Object is two amido dicyclohexyl methyl hydrides, CAS：1761-71-3 is purchased from lark prestige Science and Technology Ltd..The catalyst is two
Dibutyl tin laurate, CAS：77-58-7 is purchased from Sinopharm Chemical Reagent Co., Ltd..The auxiliary agent be antioxidant and
Ultra-violet absorber, mass ratio 1：1.The antioxidant is 1010.The ultra-violet absorber is UV-3638.
The thixotropic agent is modified urea solvent, the product for being 425 for the trade mark purchased from Dongyang chemical industry.The isomery fat
Fat race alkane is the ISOPAR-G of Mobil.The leveling auxiliary agent is the Perenol F40 of Henkel companies.The antifoaming agent
For BYK-066N (German BYK chemical companies).The wetting agent is the acid or polyamino salt of long chain polyester, trade mark EFKA
Polymer 400.The fire retardant is tricresyl phosphate (2- chloropropyls) ester, CAS：51805-45-9 has purchased from lark prestige science and technology
Limit company.
The preparation method is the same as that of Example 1 for the thixotroping type polyurethane thick-layer coating three-proofing coating.
Embodiment 3：
Embodiment 3 provides a kind of thixotroping type polyurethane thick-layer coating three-proofing coating, by weight, including at least with the following group
Point：30 parts of polyurethane resin, 25 parts of thixotropic agent, 30 parts of non-hydrogenated petroleum ether, 15 parts of isomery aliphatic alkane, 0.5 part of leveling auxiliary agent,
0.5 part of antifoaming agent, 0.5 part of wetting agent, 0.8 part of fire retardant.
The polyurethane resin is polyurethane based on castor oil resin.
The preparation method is the same as that of Example 1 for the polyurethane resin.
The methyl diphenylene diisocyanate is MDI-50, is purchased from Yantai Wanhua Polyurethane Co., Ltd, board
Number be WANNATE MDI-50.The solvent be acetone, methyl ethyl ketone, ethyl acetate mixed solvent, mass ratio 2：2：
3.The polymerization inhibitor is chlorobenzoyl chloride, CAS：403-43-0 is purchased from Sinopharm Chemical Reagent Co., Ltd..The amino
Compound is malonamide, CAS：108-13-4 is purchased from lark prestige Science and Technology Ltd..The catalyst is tin dilaurate two
Butyl tin, CAS：77-58-7 is purchased from Sinopharm Chemical Reagent Co., Ltd..The auxiliary agent is that antioxidant and ultraviolet light are inhaled
Receive agent, mass ratio 1：1.The antioxidant is 1010.The ultra-violet absorber is UV-3638.
The thixotropic agent is aerosil, is the product that the trade mark of Wa Ke companies of Germany is HDKH-30.Described
Isomery aliphatic alkane is the ISOPAR-H of Mobil.The leveling auxiliary agent is the BYK-VP-354 of BYK companies.The defoaming
Agent is BYK-066N (German BYK chemical companies).The wetting agent is the salt of polyamide and acid ester, trade mark EFKA-44.
The fire retardant is tricresyl phosphate (1,3- bis- chloropropyl) ester, CAS：40120-74-9 is purchased from section's work (Beijing) chemical technology
Co., Ltd.
The preparation method is the same as that of Example 1 for the thixotroping type polyurethane thick-layer coating three-proofing coating.
Embodiment 4：
Embodiment 4 provides a kind of thixotroping type polyurethane thick-layer coating three-proofing coating, by weight, including at least with the following group
Point：40 parts of polyurethane resin, 30 parts of thixotropic agent, 35 parts of non-hydrogenated petroleum ether, 20 parts of isomery aliphatic alkane, 1.6 parts of leveling auxiliary agent,
1.2 parts of antifoaming agent, 0.9 part of wetting agent, 2 parts of fire retardant.
The polyurethane resin is polyurethane based on castor oil resin.
The preparation method is the same as that of Example 1 for the polyurethane resin.
The methyl diphenylene diisocyanate is MDI-50, is purchased from Yantai Wanhua Polyurethane Co., Ltd, board
Number be WANNATE MDI-50.The solvent be acetone, methyl ethyl ketone, ethyl acetate mixed solvent, mass ratio 2：2：
3.The polymerization inhibitor is chlorobenzoyl chloride, CAS：403-43-0 is purchased from Sinopharm Chemical Reagent Co., Ltd..The amino
Compound is diethanol amine, CAS：111-42-2 is purchased from lark prestige Science and Technology Ltd..The catalyst is tin dilaurate two
Butyl tin, CAS：77-58-7 is purchased from Sinopharm Chemical Reagent Co., Ltd..The auxiliary agent is that antioxidant and ultraviolet light are inhaled
Receive agent, mass ratio 1：1.The antioxidant is 1010.The ultra-violet absorber is UV-3638.
The thixotropic agent is polyamide wax, and the polyamide wax is that the trade mark of the extra large modest companies of name Si De is THIXCIN-
The product of R.The isomery aliphatic alkane is the cosmetics-stage isomery aliphatic alkane LX of Japanese light extraction.The levelling helps
Agent is the Perenol S4 of Henkel companies.The antifoaming agent is BYK-066N (German BYK chemical companies).The wetting
Agent is polybasic carboxylic acid or its amine salt, trade mark EFKA-54.The fire retardant is melamine polyphosphate, CAS：15541-
60-3 is purchased from Nanjing Ai Kang Chemical Co., Ltd.s.
The preparation method is the same as that of Example 1 for the thixotroping type polyurethane thick-layer coating three-proofing coating.
Embodiment 5：
Embodiment 5 provides a kind of thixotroping type polyurethane thick-layer coating three-proofing coating, by weight, including at least with the following group
Point：39 parts of polyurethane resin, 26 parts of thixotropic agent, 32 parts of non-hydrogenated petroleum ether, 16 parts of isomery aliphatic alkane, 1.3 parts of leveling auxiliary agent,
0.8 part of antifoaming agent, 0.6 part of wetting agent, 1 part of fire retardant.
The polyurethane resin is polyurethane based on castor oil resin.
The preparation method is the same as that of Example 1 for the polyurethane resin.
The methyl diphenylene diisocyanate is MDI-50, is purchased from Yantai Wanhua Polyurethane Co., Ltd, board
Number be WANNATE MDI-50.The solvent be acetone, methyl ethyl ketone, ethyl acetate mixed solvent, mass ratio 2：2：
3.The polymerization inhibitor is chlorobenzoyl chloride, CAS：403-43-0 is purchased from Sinopharm Chemical Reagent Co., Ltd..The amino
Compound is two amido dicyclohexyl methyl hydrides, CAS：1761-71-3 is purchased from lark prestige Science and Technology Ltd..The catalyst
For dibutyl tin laurate, CAS：77-58-7 is purchased from Sinopharm Chemical Reagent Co., Ltd..The auxiliary agent is antioxygen
Agent and ultra-violet absorber, mass ratio 1：1.The antioxidant is 1010.The ultra-violet absorber is UV-
3638。
The thixotropic agent is the mixture of aerosil and polyamide wax, wherein aerosil and polyamide
The mass ratio of wax is 2：1, the aerosil is the product that the trade mark of German Wa Ke companies is HDKH-30.Described
Polyamide wax is the product that the trade mark of the extra large modest companies of name Si De is THIXCIN-R.The isomery aliphatic alkane goes out for Japan
The cosmetics-stage isomery aliphatic alkane 1620 of light.The leveling auxiliary agent is the BYK-310 of BYK companies.The antifoaming agent
For BYK-066N (German BYK chemical companies).The wetting agent is polysiloxanes and polyether block copolymer, and the trade mark is
Polyflow KL-245.The fire retardant is melamine polyphosphate, CAS：15541-60-3 is purchased from Nanjing Ai Kangization
Work Co., Ltd.
The preparation method is the same as that of Example 1 for the thixotroping type polyurethane thick-layer coating three-proofing coating.
The thixotroping curve of the thixotroping type polyurethane thick-layer coating three-proofing coating is as shown in Figure 1.
Comparative example 1：
The specific implementation mode of comparative example 1 with embodiment 5, the difference is that, by the preparation of the polyurethane resin
The polyoxy that the trade mark purchased from Shandong Dong great chemical industry Co., Ltd that castor oil in raw material such as is changed at the quality is DL-2000
Change propylene propylene glycol.
Comparative example 2：
The specific implementation mode of comparative example 2 with embodiment 5, the difference is that, the preparation of the polyurethane resin is former
Material does not include amino-compound.
Comparative example 3：
The specific implementation mode of comparative example 3 with embodiment 5, the difference is that, include thixotropic agent.
Comparative example 4：
The specific implementation mode of comparative example 4 with embodiment 5, the difference is that, by the mass parts of isomery aliphatic alkane
It is changed to 8 parts, the mass ratio of non-hydrogenated petroleum ether and isomery aliphatic alkane is 4：1.
Comparative example 5：
The specific implementation mode of comparative example 5 with embodiment 5, the difference is that, more by the isomery aliphatic alkane
It is changed to positive structure tridecane, is purchased from Jiangsu Pin Gao petrochemical industry Co., Ltd.
Performance evaluation：
1. doing solid work the time
Polyurethane three-proofing coating is coated on pcb board, is tested according to GB/T1728-1979 paint film drying time method of testing fourth methods
Do solid work the time.
2. film thickness
The three-proofing coating of Examples 1 to 5 and comparative example 1~5 is coated on PCB, at 25 DEG C, humidity 50%RH, is done solid work
Cure 7 days afterwards, film thickness is tested with calibrator.
3. stability
The sample for weighing 50g Examples 1 to 5 and comparative example 1~5 respectively is sealed in iron flask, is placed on 50 DEG C of air blast
It observes whether system phenomena such as gel or coagulation occurs in drying box, after 7d, if not occurring being recorded as stablizing, is otherwise recorded as
It is unstable.
4. adhesive force
The quality of paint film adhesion is related to the corrosion-resistant and abrasion resistance properties of paint film, is the important performance indexes of paint film.
Using Crosshatch adhesion instrument testing coating adhesive force.According to GB/T9286-1998《The cross cut test of paint and varnish paint film》
Regulation, with single side multiple-cutting-edge cutter (blade spacing 1mm, knife edge 0.05mm), square crossing cutting 6 is parallel in length and breadth on paint film
Cutting line marks cross grid figure, with transparent glue paint film cut-off part, uniformly tears adhesive tape off, checks that cutting paint film destroys
Situation carries out ranking according to pull-away area proportion, and 0~5 grade of test result judges paint film and matrix with this
Adhesive strength.The matrix is PCB circuit board.
0 grade：Cut edge is completely smooth, none lattice falls off；
1 grade：There is a little thin slice to detach in cutting infall coating, the impacted area in the areas Hua Ge is not more than 5%；
2 grades：The area of notching edge or infall coating shedding is more than 5%, but is not more than 15%；
3 grades：There is part to peel off along notching edge or whole sheet peels off or partial grid is peeled off by full wafer, the area of peeling
More than 15%, but it is less than 35%；
4 grades：Notching edge sheet peels off or some grids partly or entirely peel off, and area is more than the 35% of the areas Hua Ge,
But it is less than 65%；
5 grades：There is sheet of peeling paint at the edge of scribing line and intersection, and the gross area that falls off is more than 65%.
1 performance characterization of table is tested
As seen from Table 1, thixotroping type polyurethane thick-layer of the invention coating three-proofing coating shelf characteric is stablized, and does solid work the time
Short, primary coating thickness of dry film can realize 80~250 μm, can replace secondary coating completely, and paint film adhesion is strong, can meet
Practical application request.
Example above-mentioned is merely illustrative, some features for explaining the method for the invention.Appended right is wanted
The range as wide as possible for being intended to require to be contemplated that is sought, and embodiments as presented herein is only according to all possible implementation
The explanation of the embodiment of the selection of the combination of example.Therefore, the purpose of applicant is that the attached claims are not illustrated this hair
The exemplary selectional restriction of bright feature.Some numberical ranges used also include sub- model in the claims
It encloses, the variation in these ranges should also be construed to be covered by the attached claims in the conceived case.
Claims (10)
1. a kind of thixotroping type polyurethane thick-layer coats three-proofing coating, which is characterized in that by weight, include at least following components：
40~60 parts of polyurethane resin, 1~10 part of thixotropic agent, 30~35 parts of non-hydrogenated petroleum ether, 10~20 parts of isomery aliphatic alkane, stream
0.5~3 part of flat auxiliary agent, 0.5~3 part of antifoaming agent, 0.5~3 part of wetting agent, 0.5~3 part of fire retardant.
2. thixotroping type polyurethane thick-layer as described in claim 1 coats three-proofing coating, which is characterized in that by weight, at least
Including following components：45~55 parts of polyurethane resin, 2~6 parts of thixotropic agent, 30~35 parts of non-hydrogenated petroleum ether, isomery aliphatic alkane
15~20 parts of hydrocarbon, 0.5~1.6 part of leveling auxiliary agent, 0.5~1.2 part of antifoaming agent, 0.5~0.9 part of wetting agent, fire retardant 0.8~2
Part.
3. thixotroping type polyurethane thick-layer as described in claim 1 coats three-proofing coating, which is characterized in that the polyurethane resin
For vegetable oil based polyurethane resin.
4. thixotroping type polyurethane thick-layer as claimed in claim 3 coats three-proofing coating, which is characterized in that the vegetable oil is selected from
At least one of castor oil, soybean oil, rapeseed oil, grape seed oil, palm oil, olive oil, sunflower oil.
5. thixotroping type polyurethane thick-layer as described in claim 1 coats three-proofing coating, which is characterized in that the non-hydrogenated petroleum ether
Mass ratio with isomery aliphatic alkane is 1.5~3.5：1.
6. thixotroping type polyurethane thick-layer as described in claim 1 coats three-proofing coating, which is characterized in that the thixotropic agent is hydrogen
Change at least one of castor oil, aerosil, polyamide wax, organobentonite, modified urea solution, polyethylene wax.
7. thixotroping type polyurethane thick-layer as described in claim 1 coats three-proofing coating, which is characterized in that the wetting agent is selected from
Lecithin, the acid of long chain polyester or polyamino salt, the salt of polyamide and acid ester, polybasic carboxylic acid or its amine salt, polysiloxanes and
At least one of polyether block copolymer, special polyvinyls or coupling agent, modified polyurethane.
8. thixotroping type polyurethane thick-layer as described in claim 1 coats three-proofing coating, which is characterized in that the fire retardant is selected from
Three (2- carboxyethyls) phosphines, tricresyl phosphate (2- chloropropyls) ester, tricresyl phosphate (bis- chloropropyls of 1,3-) ester, dimethyl methyl phosphonate, poly- phosphorus
At least one of sour ammonium, triphenyl phosphate, melamine polyphosphate, zinc borate, pentaerythrite.
9. such as the preparation method of claim 1~8 any one of them thixotroping type polyurethane thick-layer coating three-proofing coating, feature exists
In at least including the following steps：
By weight, by non-hydrogenated petroleum ether, isomery aliphatic alkane, fire retardant be added vacuum kneader in, in temperature 110~
130 DEG C, vacuum degree is -0.06~-0.099MPa, and 1~2h is blended in dehydration, cooling, and polyurethane resin, thixotroping are added thereto
Agent, leveling auxiliary agent, wetting agent, antifoaming agent are -0.06~-0.099MPa in vacuum degree, and 80 DEG C hereinafter, 1~2h of stirring, mixing
Uniformly three-proofing coating is coated up to the thixotroping type polyurethane thick-layer.
10. as claim 1~8 any one of them thixotroping type polyurethane thick-layer coating three-proofing coating for military electronic equipment,
The protective coating of control panel, electronic instrument sanitary bath equipment, electrical home appliances electric appliance, LED, automobile electrically-controlled part, PCB circuit board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810562175.XA CN108659701B (en) | 2018-06-04 | 2018-06-04 | Thixotropic polyurethane thick-layer coating three-proofing paint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810562175.XA CN108659701B (en) | 2018-06-04 | 2018-06-04 | Thixotropic polyurethane thick-layer coating three-proofing paint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108659701A true CN108659701A (en) | 2018-10-16 |
| CN108659701B CN108659701B (en) | 2020-05-19 |
Family
ID=63774871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810562175.XA Active CN108659701B (en) | 2018-06-04 | 2018-06-04 | Thixotropic polyurethane thick-layer coating three-proofing paint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108659701B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111234674A (en) * | 2020-03-27 | 2020-06-05 | 上海回天新材料有限公司 | Impact-resistant modified polyurethane three-proofing paint and preparation method thereof |
| CN116082953A (en) * | 2022-12-30 | 2023-05-09 | 东莞希乐斯科技有限公司 | High-thixotropy flame-retardant UV (ultraviolet) curing three-proofing paint and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103305106A (en) * | 2012-03-13 | 2013-09-18 | 东莞市宝涵轻工科技有限公司 | Room temperature-curing environment-friendly anticorrosive coating for circuit board and preparation method thereof |
| CN104725586A (en) * | 2015-03-13 | 2015-06-24 | 珠海长先新材料科技股份有限公司 | Environment-friendly alcohol-soluble polyurethane resin and preparation method thereof |
| CN107573831A (en) * | 2017-09-11 | 2018-01-12 | 亿铖达（深圳）新材料有限公司 | A kind of wiring board anti-corrosion aqueous polyurethane three-proofing coating |
-
2018
- 2018-06-04 CN CN201810562175.XA patent/CN108659701B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103305106A (en) * | 2012-03-13 | 2013-09-18 | 东莞市宝涵轻工科技有限公司 | Room temperature-curing environment-friendly anticorrosive coating for circuit board and preparation method thereof |
| CN104725586A (en) * | 2015-03-13 | 2015-06-24 | 珠海长先新材料科技股份有限公司 | Environment-friendly alcohol-soluble polyurethane resin and preparation method thereof |
| CN107573831A (en) * | 2017-09-11 | 2018-01-12 | 亿铖达（深圳）新材料有限公司 | A kind of wiring board anti-corrosion aqueous polyurethane three-proofing coating |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111234674A (en) * | 2020-03-27 | 2020-06-05 | 上海回天新材料有限公司 | Impact-resistant modified polyurethane three-proofing paint and preparation method thereof |
| CN116082953A (en) * | 2022-12-30 | 2023-05-09 | 东莞希乐斯科技有限公司 | High-thixotropy flame-retardant UV (ultraviolet) curing three-proofing paint and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108659701B (en) | 2020-05-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108949006A (en) | A kind of non-harmful influence high-flash polyurethane three-proofing coating | |
| CN105778413B (en) | A kind of halogen-free epoxy resin composition and prepreg and laminate using it | |
| CN108659701A (en) | A kind of thixotroping type polyurethane thick-layer coating three-proofing coating | |
| CN106519940A (en) | Novel aqueous bicomponent woodenware paint for furniture for adolescents and preparation method | |
| CN108753243A (en) | Multigroup part of polyurethane pouring sealant of one kind and preparation method thereof | |
| CN106700428A (en) | Halogen-free resin composition, adhesive and laminated busbar insulating adhesive film prepared therefrom, and preparation method of insulating adhesive film | |
| CN108026252A (en) | Composition epoxy resin | |
| CN101955726A (en) | Aqueous system conductive polyaniline ultraviolet curing antistatic coating and preparation method thereof | |
| CN105754476A (en) | Silicon rubber antifouling hydrophobic coating and preparation method thereof | |
| CN108727560A (en) | A kind of polyurethane curing agent and preparation method thereof that polyhydroxy resin is modified | |
| CN107365548A (en) | A kind of epoxide terrace paint and preparation method thereof | |
| CN113025132A (en) | Water-based organic silicon modified fluorocarbon wind power blade coating and preparation method thereof | |
| EP2571916B1 (en) | Uv-curable polymer thick film dielectric compositions with excellent adhesion to ito | |
| CN104448214A (en) | Method for preparing polyurethane-type epoxy resin containing phosphorus and silicon used for flame-retardant packaging material | |
| CN104725586B (en) | A kind of environment-friendly type alcohol-soluble polyurethane resin and preparation method thereof | |
| CN104031496B (en) | A kind of electrostatic dura mater antirust paint and preparation method thereof | |
| CN109679560A (en) | Thermally conductive organic-silicon-modified flame retardant polyurethane hot melt adhesive of moisture-curable and preparation method thereof | |
| CN104559605A (en) | Methods for making coating compositions having predetermined voc contents, methods for making systems for producing such coating compositions, and temperature adjusters for making such coating compositions | |
| CN113025247B (en) | Low-water-absorption double-component thermosetting epoxy adhesive and preparation method and application thereof | |
| CN106433429B (en) | Electrostatic paint capable of being sprayed into thick film and construction method thereof | |
| JP5159684B2 (en) | Thermosetting resin composition | |
| CN110117450B (en) | Coating system, anticorrosion and heat conduction integrated coating, and preparation method and application thereof | |
| CN109651996A (en) | High thermal conductivity flame retardant polyurethane hot melt adhesive and preparation method thereof | |
| CN108912611A (en) | A kind of plate resistor organic packaging slurry and preparation method suitable for room temperature storage | |
| CN109679563A (en) | Graphene oxide modified flame-retardant damp solidifying polyurethane hot melt adhesive and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |