CN107779078A - Low smell water-borne wood coating of a kind of low VOC and preparation method thereof - Google Patents
Low smell water-borne wood coating of a kind of low VOC and preparation method thereof Download PDFInfo
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- CN107779078A CN107779078A CN201711139208.1A CN201711139208A CN107779078A CN 107779078 A CN107779078 A CN 107779078A CN 201711139208 A CN201711139208 A CN 201711139208A CN 107779078 A CN107779078 A CN 107779078A
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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
-
- 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
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2312/00—Crosslinking
Abstract
The present invention relates to water-borne wood coating technical field, low smell water-borne wood coating of specifically a kind of low VOC and preparation method thereof, the low VOC is low, and smell water-borne wood coating is made up of feedstock composition, and the feedstock composition includes：The parts by weight of PPG 50~80, the parts by weight of diisocyanate 50~80, the parts by weight of acrylic resin 60~100, the parts by weight of catalyst 3~8, the parts by weight of graphene oxide 2~10, the parts by weight of starch 3~12, the parts by weight of castor oil 5~15, the parts by weight of emulsifying agent 2~9, the parts by weight of defoamer 1~5, the parts by weight of thickener 2~8, the parts by weight of coalescents 1~5, the parts by weight of preservative 1~3.The water-borne wood coating of the present invention does not contain organic volatile, has the characteristics of safety and environmental protection, green and healthy.
Description
Technical field
The present invention relates to water-borne wood coating technical field, the low smell water-borne wood coating of specifically a kind of low VOC
And preparation method thereof.
Background technology
Woodwork coating refers to for the painting made of solid wood board, wood grain panel, bakelite plate, sawdust-board, fiberboard etc. on equipment
Material, including furniture, floor, stationery sports goods, musical instrument and constructional ornamental material paint.Two classes are roughly divided into, one kind is to be used for furniture
Manufactory, one kind are to be used to interior decoration decorate.
The principal item of current woodwork coating (including furniture and indoor decorating coating) has nitrate paint (NC), polyurethane
Coating (PU), unsaturated polyester coating (PE), amido alkyd paint (AC, referred to as acid are coating material solidified), ultraviolet-curing paint
And water paint etc. (UV).Solvent borne woodwork coating deposit a large amount of organic solvents in the production and use process evaporate into it is right in air
Environment pollutes and murder by poisoning is produced to producers' body, while produces with work progress depositing due to flammable organic solvent
So whole process all needs to prevent fires, polyurethanes is being added to improve what is made now with using propionic acid ester emulsion, esters of acrylic acid
Water-borne wood coating, the content of organic volatile agent are reduced to 5%-30%, although this greatly reduces the content of organic solvent,
There are still large effect is produced to user and environment, simultaneously because the reduction of organic solvent causes cold-resistant heat-resisting performance
Reduce, and such water-borne wood coating preparation technology is complicated, and input cost is high, it is necessary to large-scale equipment and the technology behaviour of specialty
Work person could prepare.
Organic solvent in woodwork coating, which is evaporate into air, seriously affects atmospheric environment.Solvent is dirty caused by volatilizing
Contaminate and damaged to ecological environment, threatened to health of human body, be unfavorable for the long term growth of coating industry, so coating industry
Attention to VOC (VOC) harm, the control to VOC are paid close attention to product quality from science substantially to be changed, drop
Low VOC has turned into the emphasis and development trend of industry technology innovation concern.
Polyurethane woodware coating has paint film tough, and gloss is plentiful, and adhesive force is strong, the advantages of water proof and wearable, corrosion resistance.
It is widely used in high-class woodenware furniture, it can also be used to metal surface.But the VOC of polyurethane woodware coating is higher.
The content of the invention
In view of the shortcomings of the prior art, primary and foremost purpose of the invention is to carry a kind of low smell water-borne wood coatings of low VOC
And preparation method thereof, it has relatively low VOC and very low smell, has safety and environmental protection, green and healthy performance.
To achieve the above object, the present invention provides a kind of low smell water-borne wood coatings of low VOC, the low smell of the low VOC
Water-borne wood coating is made up of feedstock composition, and the feedstock composition includes：The parts by weight of PPG 50~80, two isocyanides
The parts by weight of acid esters 50~80, the parts by weight of acrylic resin 60~100, the parts by weight of catalyst 3~8, the weight of graphene oxide 2~10
Part, the parts by weight of starch 3~12, the parts by weight of castor oil 5~15, the parts by weight of emulsifying agent 2~9, the parts by weight of defoamer 1~5, thickening
The parts by weight of agent 2~8, the parts by weight of coalescents 1~5, the parts by weight of preservative 1~3.
According to the present invention, in order to further optimize the combination property of the low smell water-borne wood coatings of the low VOC, preferred stripe
Under part, the low VOC is low, and smell water-borne wood coating is made up of feedstock composition, and the feedstock composition includes：Polyether polyols
The parts by weight of alcohol 60~75, the parts by weight of diisocyanate 60~75, the parts by weight of acrylic resin 80~95, the weight of catalyst 5~6
Part, the parts by weight of graphene oxide 3~8, the parts by weight of starch 5~10, the parts by weight of castor oil 8~12, the parts by weight of emulsifying agent 3~8, disappear
The parts by weight of infusion 2~3, the parts by weight of thickener 3~5, the parts by weight of coalescents 3~4, the parts by weight of preservative 1~3.
In the present invention, under optimum condition, on the one hand the PPG can carry out recombination reaction with acrylic resin,
Rigid acrylic resin long-chain is introduced into PPG, on the other hand, the PPG can be with isocyanates
Reaction generation polyurethane, so as to which polyurethane and acrylic resin compound resin be prepared.Under preferable case, the polyether polyols
Alcohol is selected from polyether Glycols and/or polyether-tribasic alcohol, more specifically polyoxypropyleneglycol, polytetrahydrofuran diol, tetrahydrochysene furan
Mutter-at least one of propylene oxide copolymer glycols and PPOX triol.
Under the conditions of, according to the invention it is preferred to, isocyanates can react with PPG, generate polyurethane, preferably feelings
Under condition, the isocyanates be selected from toluene di-isocyanate(TDI), IPDI, methyl diphenylene diisocyanate,
At least one of dicyclohexyl methyl hydride diisocyanate, hexamethylene diisocyanate, lysine diisocyanate.According to this
Invent, under optimum condition, the molecular weight 75000~120000 of the acrylic resin, solid content is 50~75%.
Under the conditions of, according to the invention it is preferred to, the catalyst is selected from triethyl benzyl ammonia chloride, triethylbenzyl ammonium bromide
And at least one of N, N- dimethyl Bian amine.
According to the present invention, the present invention does not have special requirement to the species of thickener, can be that to be usually used in impervious color water-based
The thickener of wooden ware sealing priming paint, for example, the thickener can be cellulose or Magnesiumaluminumsilicate, further, the fiber
Element is selected from carboxymethyl cellulose, methylcellulose, hydroxyethyl cellulose, ethyl cellulose, hydroxypropyl methyl cellulose, ethoxy
At least one of cellulose etc..
Under the conditions of, according to the invention it is preferred to, the defoamer is selected from organosiloxane class, polyethers, polyether-modified silicon class
At least one of, such as can be in dimethyl silicone polymer, fluorosilicone, ethylene glycol siloxanes, HR polyether antifoam agents etc.
At least one.
Under the conditions of, according to the invention it is preferred to, the preservative is selected from imdazole derivatives, n-octyl-isothiazolin ketone, aryl
At least one of urea derivative.
Under the conditions of, according to the invention it is preferred to, the emulsifying agent is selected from Tween 80.
Under the conditions of, according to the invention it is preferred to, the coalescents are selected from 2,2,4- trimethyl -1,3 pentanediol list isobutyric acids
At least one of ester, propane diols phenylate, esters high boiling mixture, tripropylene glycol n-butyl ether.
A kind of preparation method of the low smell water-borne wood coating of low VOC, comprises the following steps：
(1) PPG, diisocyanate and graphene oxide are mixed under the conditions of existing for catalyst in water
Uniformly, 2~6h is then reacted at 100~150 DEG C, obtains modified polyurethane；
(2) by modified polyurethane, acrylic resin, starch, castor oil, emulsifying agent, defoamer, thickener, coalescents,
Preservative reacts 3~5h at 80~120 DEG C, that is, obtains the low smell water-borne wood coating of low VOC.
Under the conditions of, according to the invention it is preferred to, the preparation method of the graphene oxide comprises the following steps：
Graphene oxide, dimethylformamide, n-hexane and Dicyclohexylcarbodiimide are mixed, supersound process 10~
15min, 40~50h is then reacted at 100~150 DEG C, add absolute ethyl alcohol, through standing, filtering, gained precipitation is scrubbed,
After drying and processing, amino modified graphene oxide is obtained.
Pass through above-mentioned technical proposal, the present invention have following technique effect：
The present invention using pure natural castor oil and pure plant source starch as prepare woodwork coating raw material it
One, the associating intensity between its strand and strand is big, good impact resistance after film forming；Breast is coordinated using emulsifying agent and gelatinized corn starch
Change castor oil, then with modified polyurethane and polyacrylic acid recombination reaction, improve the intermolecular degree of cross linking, improve coating and do
Toughness and adhesive force after dry, and the water-borne wood coating of the present invention does not contain organic volatile, has safety and environmental protection, green strong
The characteristics of health.
Embodiment
Technical scheme is clearly and completely described below in conjunction with embodiment, it is clear that described reality
It is only part of the embodiment of the present invention to apply example, rather than whole embodiments.It is general based on the embodiment in the present invention, this area
The every other embodiment that logical technical staff is obtained under the premise of creative work is not made, belong to what the present invention protected
Scope.
Embodiment 1
The low smell water-borne wood coating of a kind of low VOC, by the material of following parts by weight：The weight of polytetrahydrofuran diol 70
Part, the parts by weight of lysine diisocyanate 70, the parts by weight of acrylic resin 90 (molecular weight 100000, solid content 60%), three
The parts by weight of ethylbenzylammonium chloride 6, the parts by weight of graphene oxide 5, the parts by weight of starch 8, the parts by weight of castor oil 10, polyoxyethylene
Go to the parts by weight of water sorbitol monooleate 5, the parts by weight of dimethyl silicone polymer 3, the parts by weight of carboxymethyl cellulose 4,2,2,4- tri-
Methyl isophthalic acid, the parts by weight of 3 pentanediol mono isobutyrate 3, the parts by weight of n-octyl-isothiazolin ketone 2.
The preparation method of the low smell water-borne wood coating of the low VOC, comprises the following steps:
1st, graphene oxide, dimethylformamide, n-hexane and Dicyclohexylcarbodiimide are mixed, are ultrasonically treated
15min, 50h is then reacted at 120 DEG C, add absolute ethyl alcohol, through standing, filtering, gained precipitates scrubbed, drying and processing
Afterwards, amino modified graphene oxide is obtained.
2nd, polytetrahydrofuran diol, lysine diisocyanate and graphene oxide are existed in triethyl benzyl ammonia chloride
Under conditions of, it is well mixed in water, then reacts 3h at 120 DEG C, obtain modified polyurethane；By modified polyurethane, propylene
Acid resin, starch, castor oil, Tween 80, dimethyl silicone polymer, carboxymethyl cellulose, 2,
2,4- trimethyl -1,3 pentanediol mono isobutyrates, n-octyl-isothiazolin ketone react 4h at 100 DEG C, that is, it is low to obtain low VOC
Smell water-borne wood coating.
Embodiment 2
The low smell water-borne wood coating of a kind of low VOC, by the material of following parts by weight：Tetrahydrofuran-propylene oxide copolymerization
(molecular weight 90000, solid content are for the parts by weight of glycol 75, the parts by weight of toluene di-isocyanate(TDI) 75, the parts by weight of acrylic resin 80
65%), parts by weight of the triethylbenzyl ammonium bromide 6, parts by weight of graphene oxide 3, the parts by weight of starch 10, the parts by weight of castor oil 8, poly-
Oxygen ethene goes to the parts by weight of water sorbitol monooleate 8, the parts by weight of HR polyether antifoam agents 2, the parts by weight of carboxymethyl cellulose 5,2,2,
The parts by weight of 4- trimethyls -1,3 pentanediol mono isobutyrate 3, the parts by weight of Arylurea derivatives 1.
The preparation method of the low smell water-borne wood coating of the low VOC, comprises the following steps:
1st, graphene oxide, dimethylformamide, n-hexane and Dicyclohexylcarbodiimide are mixed, are ultrasonically treated
15min, 45h is then reacted at 100 DEG C, add absolute ethyl alcohol, through standing, filtering, gained precipitates scrubbed, drying and processing
Afterwards, amino modified graphene oxide is obtained.
2nd, by tetrahydrofuran-propylene oxide copolymer glycols, toluene di-isocyanate(TDI) and graphene oxide in triethylbenzyl
Under the conditions of ammonium bromide is existing, it is well mixed in water, then the anti-6h at 150 DEG C, obtains modified polyurethane；By the poly- ammonia of modification
Ester, acrylic resin, starch, castor oil, Tween 80, HR polyether antifoam agents, carboxymethyl cellulose
Element, 2,2,4- trimethyl -1,3 pentanediol mono isobutyrates, Arylurea derivatives react 3h at 120 DEG C, that is, obtain low VOC
Low smell water-borne wood coating.
Embodiment 3
The low smell water-borne wood coating of a kind of low VOC, by the material of following parts by weight：Tetrahydrofuran-propylene oxide copolymerization
The parts by weight of glycol 60, the parts by weight of IPDI 75, acrylic resin 95 parts by weight (molecular weight 80000, solid content
For 55%), the parts by weight of triethyl benzyl ammonia chloride 5, the parts by weight of graphene oxide 8, the parts by weight of starch 5, the parts by weight of castor oil 12,
The parts by weight of Tween 80 3, the parts by weight of ethylene glycol siloxanes 3, the parts by weight of hydroxyethyl cellulose 3, three
The parts by weight of propylene glycol n-butyl ether 4, the parts by weight of imdazole derivatives 3.
The preparation method of the low smell water-borne wood coating of the low VOC, comprises the following steps:
1st, graphene oxide, dimethylformamide, n-hexane and Dicyclohexylcarbodiimide are mixed, are ultrasonically treated
15min, 40h is then reacted at 150 DEG C, add absolute ethyl alcohol, through standing, filtering, gained precipitates scrubbed, drying and processing
Afterwards, amino modified graphene oxide is obtained.
2nd, by tetrahydrofuran-propylene oxide copolymer glycols, IPDI and graphene oxide in triethyl group
Under the conditions of benzyl ammonium chloride is existing, it is well mixed in water, then reacts 2h at 100 DEG C, obtain modified polyurethane；It will change
Property polyurethane, acrylic resin, starch, castor oil, Tween 80, ethylene glycol siloxanes, hydroxyl second
Base cellulose, tripropylene glycol n-butyl ether, imdazole derivatives react 3h at 80 DEG C, that is, obtain the low smell aqueous wooden ware of low VOC and apply
Material.
Embodiment 4
The low smell water-borne wood coating of a kind of low VOC, by the material of following parts by weight：The weight of polytetrahydrofuran diol 80
Part, the parts by weight of lysine diisocyanate 80, the parts by weight of acrylic resin 60 (molecular weight 120000, solid content 50%), three
The parts by weight of methylethyl benzyl ammonium bromide 8, the parts by weight of graphene oxide 2, the parts by weight of starch 12, the parts by weight of castor oil 5, polyoxyethylene
Go the parts by weight of water sorbitol monooleate 9, the parts by weight of HR polyether antifoam agents 5, the parts by weight of hydroxypropyl methyl cellulose 8,3 the third two
The parts by weight of alcohol n-butyl ether 5, the parts by weight of n-octyl-isothiazolin ketone 1.
The preparation method of the low smell water-borne wood coating of the low VOC, comprises the following steps:
1st, graphene oxide, dimethylformamide, n-hexane and Dicyclohexylcarbodiimide are mixed, are ultrasonically treated
15min, 42h is then reacted at 100 DEG C, add absolute ethyl alcohol, through standing, filtering, gained precipitates scrubbed, drying and processing
Afterwards, amino modified graphene oxide is obtained.
2nd, polytetrahydrofuran diol, lysine diisocyanate and graphene oxide are existed in triethylbenzyl ammonium bromide
Under conditions of, it is well mixed in water, then reacts 2h at 120 DEG C, obtain modified polyurethane；By modified polyurethane, propylene
Acid resin, starch, castor oil, Tween 80, HR polyether antifoam agents, hydroxypropyl methyl cellulose,
Tripropylene glycol n-butyl ether, n-octyl-isothiazolin ketone react 5h at 100 DEG C, that is, obtain the low smell aqueous wooden ware of low VOC and apply
Material.
Embodiment 5
The low smell water-borne wood coating of a kind of low VOC, by the material of following parts by weight：Tetrahydrofuran-propylene oxide copolymerization
The parts by weight of glycol 50, the parts by weight of hexamethylene diisocyanate 50, the parts by weight of acrylic resin 100 (molecular weight 75000, admittedly contain
Measure for 75%), the parts by weight of triethylbenzyl ammonium bromide 3, the parts by weight of graphene oxide 10, the parts by weight of starch 3, the weight of castor oil 15
Part, the parts by weight of Tween 80 2, the parts by weight of HR polyether antifoam agents 1, the weight of hydroxypropyl methyl cellulose 2
Measure part, the parts by weight of tripropylene glycol n-butyl ether 1, the parts by weight of Arylurea derivatives 3.
The preparation method of the low smell water-borne wood coating of the low VOC, comprises the following steps:
1st, graphene oxide, dimethylformamide, n-hexane and Dicyclohexylcarbodiimide are mixed, are ultrasonically treated
15min, 50h is then reacted at 150 DEG C, add absolute ethyl alcohol, through standing, filtering, gained precipitates scrubbed, drying and processing
Afterwards, amino modified graphene oxide is obtained.
2nd, by tetrahydrofuran-propylene oxide copolymer glycols, hexamethylene diisocyanate and graphene oxide in triethyl group
Under the conditions of Benzylphosphonium Bromide ammonium is existing, it is well mixed in water, then reacts 6h at 100 DEG C, obtain modified polyurethane；It will change
Property polyurethane, acrylic resin, starch, castor oil, Tween 80, HR polyether antifoam agents, hydroxypropyl
Ylmethyl cellulose, tripropylene glycol n-butyl ether, Arylurea derivatives react 3h at 120 DEG C, that is, it is water-based to obtain the low smell of low VOC
Woodwork coating.
Performance test
Method of testing is tested according to furniture surface paint film national standard, GB/T4893.2-2005 furniture surface paint film physics and chemistry
Performance test：Wet-heat resisting method of testing, the test of GB/T4893.3-2005 furniture surface paint films physicochemical property：Dry heat resistance method of testing,
GB/T4893.9 furniture surface paint films physicochemical property is tested：Shock resistance method of testing, GB/T4893.4 furniture surface paint film physics and chemistry
Can test：Adhesive force cross-cut method of testing.
The performance parameter of the low smell water-borne wood coating of each low VOC in embodiment 1~5
Experimental result：It is known that the film of the low smell water-borne wood coatings of low VOC of the present invention from the point of view of from the above result that
Property it is excellent, moisture-proof Thermal test, dry heat resistance test at 2 grades or more than 2 grades, either low temperature, high temperature or it is damp and hot all to film not
Have an impact, resistivity is strong, and anti-impact pressure test is more excellent, and grade is 1 grade, and surface only has impression not have slight crack, and adhesive force is handed over
Fork cutting is determined as 0 grade, and cut edge is completely smooth, and none lattice comes off, and performance is optimal, and is free of volatile organic matter, ring
Guarantor does not pollute.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit requires rather than described above limits, it is intended that all in the implication and scope of the equivalency of claim by falling
Change is included in the present invention.
Claims (10)
1. the low smell water-borne wood coating of a kind of low VOC, it is characterised in that the low smell water-borne wood coating of the low VOC is by original
Feed composition is made, and the feedstock composition includes：The parts by weight of PPG 50~80, the weight of diisocyanate 50~80
Part, the parts by weight of acrylic resin 60~100, the parts by weight of catalyst 3~8, the parts by weight of graphene oxide 2~10, the weight of starch 3~12
Measure part, the parts by weight of castor oil 5~15, the parts by weight of emulsifying agent 2~9, the parts by weight of defoamer 1~5, the parts by weight of thickener 2~8, into
The parts by weight of film auxiliary agent 1~5, the parts by weight of preservative 1~3.
2. the low smell water-borne wood coating of low VOC according to claim 1, it is characterised in that the low smell water of the low VOC
Property woodwork coating is made up of feedstock composition, and the feedstock composition includes：The parts by weight of PPG 60~75, two isocyanic acids
The parts by weight of ester 60~75, the parts by weight of acrylic resin 80~95, the parts by weight of catalyst 5~6, the parts by weight of graphene oxide 3~8,
The parts by weight of starch 5~10, the parts by weight of castor oil 8~12, the parts by weight of emulsifying agent 3~8, the parts by weight of defoamer 2~3, thickener 3~
5 parts by weight, the parts by weight of coalescents 3~4, the parts by weight of preservative 1~3.
3. the low smell water-borne wood coating of low VOC according to claim 1, it is characterised in that the PPG choosing
From in polyoxypropyleneglycol, polytetrahydrofuran diol, tetrahydrofuran-propylene oxide copolymer glycols and PPOX triol
It is at least one.
4. the low smell water-borne wood coating of low VOC according to claim 1, it is characterised in that the diisocyanate choosing
From toluene di-isocyanate(TDI), IPDI, methyl diphenylene diisocyanate, the isocyanic acid of dicyclohexyl methyl hydride two
At least one of ester, hexamethylene diisocyanate, lysine diisocyanate.
5. the low smell water-borne wood coating of low VOC according to claim 1, it is characterised in that the acrylic resin
Molecular weight 75000~120000, solid content are 50~75%.
6. the low smell water-borne wood coating of low VOC according to claim 1, it is characterised in that the catalyst is selected from three
At least one of ethylbenzylammonium chloride, triethylbenzyl ammonium bromide and N, N- dimethyl Bian amine.
7. the low smell water-borne wood coating of low VOC according to claim 1, it is characterised in that the thickener is selected from carboxylic
In methylcellulose, methylcellulose, hydroxyethyl cellulose, ethyl cellulose, hydroxypropyl methyl cellulose, hydroxyethyl cellulose
At least one.
8. the low smell water-borne wood coating of low VOC according to claim 1, it is characterised in that the coalescents are selected from
In 2,2,4- trimethyl -1,3 pentanediol mono isobutyrates, propane diols phenylate, esters high boiling mixture, tripropylene glycol n-butyl ether
At least one.
9. a kind of preparation method of the low smell water-borne wood coatings of low VOC according to any one in claim 1~8,
It is characterised in that it includes following steps：
(1) by PPG, diisocyanate and graphene oxide under the conditions of existing for catalyst, mixed in water equal
It is even, 2~6h is then reacted at 100~150 DEG C, obtains modified polyurethane；
(2) by modified polyurethane, acrylic resin, starch, castor oil, emulsifying agent, defoamer, thickener, coalescents, anti-corrosion
3~5h is reacted in agent at 80~120 DEG C, that is, obtains the low smell water-borne wood coating of low VOC.
10. the preparation method of the low smell water-borne wood coating of low VOC according to claim 9, it is characterised in that the oxygen
The preparation method of graphite alkene comprises the following steps：
Graphene oxide, dimethylformamide, n-hexane and Dicyclohexylcarbodiimide are mixed, are ultrasonically treated 10~15min,
Then 40~50h is reacted at 100~150 DEG C, adds absolute ethyl alcohol, through standing, filtering, gained precipitation is scrubbed, at drying
After reason, amino modified graphene oxide is obtained.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109575803A (en) * | 2018-12-25 | 2019-04-05 | 钟高明 | A kind of wear-resisting grain of wood finishing coat and its application method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102676035A (en) * | 2012-04-27 | 2012-09-19 | 中山蓝海洋水性涂料有限公司 | High-glossiness, scratch-resistant, wear-resistant and environment-friendly waterborne wood varnish and preparation method thereof |
| CN106243984A (en) * | 2016-08-17 | 2016-12-21 | 董武齐 | A kind of water-borne wood coating of Diamond Search volatilization and preparation method thereof |
| CN106634293A (en) * | 2016-10-28 | 2017-05-10 | 展辰新材料集团股份有限公司 | Water-borne wood coating |
| CN107033748A (en) * | 2017-04-27 | 2017-08-11 | 河北晨阳工贸集团有限公司 | A kind of multi-functional woodenware sealing wax and preparation method thereof |
| CN107201162A (en) * | 2017-06-12 | 2017-09-26 | 安徽名士达新材料有限公司 | A kind of high-performance double-component waterborne polyurethane woodcare paint |
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| CN102676035A (en) * | 2012-04-27 | 2012-09-19 | 中山蓝海洋水性涂料有限公司 | High-glossiness, scratch-resistant, wear-resistant and environment-friendly waterborne wood varnish and preparation method thereof |
| CN106243984A (en) * | 2016-08-17 | 2016-12-21 | 董武齐 | A kind of water-borne wood coating of Diamond Search volatilization and preparation method thereof |
| CN106634293A (en) * | 2016-10-28 | 2017-05-10 | 展辰新材料集团股份有限公司 | Water-borne wood coating |
| CN107033748A (en) * | 2017-04-27 | 2017-08-11 | 河北晨阳工贸集团有限公司 | A kind of multi-functional woodenware sealing wax and preparation method thereof |
| CN107201162A (en) * | 2017-06-12 | 2017-09-26 | 安徽名士达新材料有限公司 | A kind of high-performance double-component waterborne polyurethane woodcare paint |
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| CN109575803A (en) * | 2018-12-25 | 2019-04-05 | 钟高明 | A kind of wear-resisting grain of wood finishing coat and its application method |
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