CN111635669A - Water-based ink-jet ink and preparation method thereof - Google Patents
Water-based ink-jet ink and preparation method thereof Download PDFInfo
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- CN111635669A CN111635669A CN202010542468.9A CN202010542468A CN111635669A CN 111635669 A CN111635669 A CN 111635669A CN 202010542468 A CN202010542468 A CN 202010542468A CN 111635669 A CN111635669 A CN 111635669A
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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
- C09D11/00—Inks
- C09D11/30—Inkjet printing inks
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
- C08G18/12—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step using two or more compounds having active hydrogen in the first polymerisation step
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
- C08G18/3203—Polyhydroxy compounds
- C08G18/3206—Polyhydroxy compounds aliphatic
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
- C08G18/3225—Polyamines
- C08G18/3228—Polyamines acyclic
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/34—Carboxylic acids; Esters thereof with monohydroxyl compounds
- C08G18/348—Hydroxycarboxylic acids
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
- C08G18/44—Polycarbonates
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
- C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
- C08G18/6633—Compounds of group C08G18/42
- C08G18/6637—Compounds of group C08G18/42 with compounds of group C08G18/32 or polyamines of C08G18/38
- C08G18/664—Compounds of group C08G18/42 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/3203
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
- C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
- C08G18/6633—Compounds of group C08G18/42
- C08G18/6637—Compounds of group C08G18/42 with compounds of group C08G18/32 or polyamines of C08G18/38
- C08G18/6648—Compounds of group C08G18/42 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/3225 or C08G18/3271 and/or polyamines of C08G18/38
- C08G18/6651—Compounds of group C08G18/42 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/3225 or C08G18/3271 and/or polyamines of C08G18/38 with compounds of group C08G18/3225 or polyamines of C08G18/38
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
- C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
- C08G18/6633—Compounds of group C08G18/42
- C08G18/6659—Compounds of group C08G18/42 with compounds of group C08G18/34
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/75—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic
- C08G18/751—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring
- C08G18/752—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring containing at least one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group
- C08G18/753—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring containing at least one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group containing one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group having a primary carbon atom next to the isocyanate or isothiocyanate group
- C08G18/755—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring containing at least one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group containing one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group having a primary carbon atom next to the isocyanate or isothiocyanate group and at least one isocyanate or isothiocyanate group linked to a secondary carbon atom of the cycloaliphatic ring, e.g. isophorone diisocyanate
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- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Polyurethanes Or Polyureas (AREA)
- Inks, Pencil-Leads, Or Crayons (AREA)
Abstract
The invention provides a water-based spraying ink which comprises the following components in percentage by weight: 10-25% of carbon dioxide-based polycarbonate ether polyol, 5-10% of fluorine-containing polyether polyol, 1-5% of hydroxyl-containing acid, 5-10% of isocyanate, 0.05-0.5% of catalyst, 1-5% of neutralizing agent, 1-5% of chain extender and the balance of water. The invention also provides a method for preparing the water-based ink-jet ink. The ink obtained by spraying of the invention has good adhesiveness and is not easy to block the nozzle.
Description
Technical Field
The invention relates to the technical field of ink, in particular to water-based spraying ink and a preparation method thereof.
Background
The spray ink is an ink that is sprayed by a spraying device or a spraying apparatus. The current spraying type ink has poor adhesiveness to a plastic substrate, is easy to crack or fall off after a cold and hot shock test, is easy to block a nozzle during a spraying process, has poor atomization effect and has a rough and non-bright ink surface.
Disclosure of Invention
In view of the above, it is desirable to provide a water-based ink-jet ink and a preparation method thereof, which solve the above technical problems.
The invention provides a water-based spraying ink which comprises the following components in percentage by weight: 10-25% of carbon dioxide-based polycarbonate ether polyol, 5-10% of fluorine-containing polyether polyol, 1-5% of hydroxyl-containing acid, 5-10% of isocyanate, 0.05-0.5% of catalyst, 1-5% of neutralizing agent, 1-5% of chain extender and the balance of water.
Further, the number average molecular weight of the carbon dioxide-based polycarbonate ether polyol is 4500-8000, and the content of CO2 is 10-30%.
Further, the fluorine-containing polyether polyol is bifunctional hydroxyl fluorine-containing polyether polyol, and the molecular structural formula of the fluorine-containing polyether polyol is as follows: HOCH2CF2O (CF2CF2O) p (CF2O) qCF2CH2OH, wherein 6 is more than or equal to p and more than or equal to 2, and 5 is more than or equal to q and more than or equal to 1.
Further, p is 3 and q is 2.
Further, the ink also comprises a proper amount of additives.
Further, the additives include a dispersant, a leveling agent, an antifoaming agent, a thixotropic agent, and an antioxidant.
Further, according to the weight percentage, the dispersing agent is 0.5-1%, the flatting agent is 0.5-1%, the defoaming agent is 0.5-1%, the thixotropic agent is 0.5-1%, and the antioxidant is 0.5-2%.
Further, the ink also comprises 1-5% of pigment and 0.5-2% of wear-resistant filler according to weight percentage.
The invention provides a method for preparing the water-based ink-jet ink, which comprises the following steps:
adding the carbon dioxide-based polycarbonate ether polyol, the fluorine-containing polyether polyol and the hydroxy acid into a reaction kettle at one time, heating the reaction kettle, and then vacuumizing to remove water;
after cooling, adding part of the catalyst, slowly dripping the isocyanate into the reaction kettle under the protection of protective gas, and reacting for a certain time after controlling the reaction temperature of the materials;
supplementing the rest catalyst, and continuously preserving heat;
cooling and adding the neutralizer;
adding water and the chain extender, controlling the temperature of the materials, and stirring for reaction;
the residual dewatered water is slowly added into the reaction kettle to be stirred under high-speed stirring.
Furthermore, proper amount of additive, pigment and wear-resistant filler are added finally.
Wherein the hydroxyl-containing acid is one or more of 2, 3-dimethylolpropionic acid, 2, 2-dimethylolbutyric acid and 2, 3-dihydroxysuccinic acid, and 2, 2-dimethylolpropionic acid is preferably selected.
Wherein the even numbered isocyanate may be one or more mixtures of HDI (hexamethylene diisocyanate), (TMHDI) trimethyl-1, 6-hexamethylene diisocyanate, IPDI (isophorone diisocyanate), CHDI (1, 4-cyclohexane diisocyanate), HXDI (cyclohexane dimethylene diisocyanate), HTDI (methylcyclohexyl diisocyanate).
Wherein, the catalyst is one or more of organic tin, organic bismuth and organic zinc, and organic bismuth is preferably used as the catalyst of the system.
Wherein the neutralizing agent is one or a mixture of triethylamine and ammonia water.
The chain extender is one or more of trimethylolpropane, polyoxypropylene triethanolamine, ethylenediamine, diethanolamine and triethanolamine.
Wherein the antioxidant is 1010 antioxidant produced by basf.
Wherein, the pigment is titanium dioxide, calcium carbonate and aluminum oxide, and preferably, the titanium dioxide is used as a white pigment.
Wherein the wear-resistant filler is phosphoric acid pickaxe, silicon nitride, nanoscale aluminum oxide and preferably phosphoric acid pickaxe.
The mechanism of the invention is as follows: reacting hydroxyl on the carbon dioxide-based polycarbonate ether polyol and the fluorine-containing polyether polyol with isocyanate groups on isocyanate, then carrying out chain extension reaction by using a small amount of chain extender to increase molecular weight and form a cross-linked network structure, adding a proper amount of water-based isocyanate curing agent before spraying, and then carrying out spraying curing; the cross-linked network main body resin structure formed by the joint reaction of the carbon dioxide-based polycarbonate ether polyol, the fluorine-containing polyether polyol and the isocyanate has more excellent adhesion performance, can increase the adhesion force with plastics, has better weather resistance, can play a role in lubricating and leveling in a system by the fluorine-containing chain segment, can achieve a good spraying effect, and has good wetting and leveling effects on a substrate and full and bright color.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without any inventive step, are within the scope of the present invention.
Example 1:
adding 80g of carbon dioxide-based polycarbonate ether diol (with the number average molecular weight of 6500 and the content of CO2 of 15 percent) and 50g of fluorine-containing polyether polyol HOCH2CF2O (CF2CF2O)3(CF2O)2CF2CH2OH, 10g of 2 and 2-dimethylolpropionic acid into a 1000ml clean four-mouth reaction bottle, heating to 110 ℃, vacuumizing and removing water for 2 h;
after the dehydration is finished, cooling to 80 ℃, adding 0.16g of organic bismuth catalyst, slowly dripping 30g of IPDI monomer into the reaction kettle under the protection of nitrogen, finishing the dripping within about 30min, controlling the reaction temperature of the materials to be 80 +/-2 ℃, and reacting for 2 h;
after the heat preservation is finished, the rest 0.04g of catalyst is added, and the heat preservation is continued for 1 hour; cooling to 45 ℃, adding 8g of triethylamine, and stirring for 5 min; then adding 75g of deionized water and 3.5g of ethylenediamine chain extender, stirring and reacting for 30min, and controlling the temperature of the materials to be below 40 ℃;
slowly adding the residual 230g of deionized water into the reaction kettle under high-speed stirring, and stirring for 30min to obtain translucent resin;
then, 20g of nano titanium dioxide, 8g of zirconium phosphate and 5g of BASF 1010 antioxidant are sequentially added into the reacted materials at one time, and stirred and dispersed for 35 min; adding a dispersing agent, a flatting agent, a defoaming agent and a thixotropic agent, stirring and dispersing for 30min, introducing cooling water to cool the materials to about 30 ℃, and filtering by using a 400-mesh steel wire filter screen to obtain the ink component.
The ink components are kept stand for 500 hours, and the layering and coarsening phenomena are not obvious.
50g of the ink composition was added to the ink composition before spraying
XP2655 is stirred and mixed, wherein the mass ratio of the ink components: the curing agent is 100: 8. the ABS plastic substrate is sprayed on the surface of the ABS plastic substrate, the thickness of a sprayed dry film is about 80-150 um, and the ABS plastic substrate is placed for 24 hours at normal temperature after being sprayed. And (3) testing results: the coating material is continuously sprayed without a nozzle blockage, the hardness of the obtained coating material is 1H, the surface is bright, the coating material is free of yellowing and falling after being placed for 2000 hours in an environment with the temperature of 85 ℃ and the humidity of 85 percent, the hundred-grid test is ISO0 grade, and the coating material is free of cracking and falling after being subjected to cold and hot impact (-40-60 ℃ 20 rounds); and in an SGS third-party standard ultraviolet yellowing test, the delta E is less than 0.5, and no yellowing phenomenon occurs.
Example 2
Adding 90g of carbon dioxide-based polycarbonate ether diol (with the number average molecular weight of 5200 and the content of CO2 of 13%) and 40g of fluorine-containing polyether polyol HOCH2CF2O (CF2CF2O)4(CF2O)3CF2CH2OH, 12g of 2 and 2-dimethylolpropionic acid into a 1000ml clean four-mouth reaction bottle, heating to 110 ℃, and vacuumizing to remove water for 2 h;
after the dehydration is finished, cooling to 80 ℃, adding 0.16g of organic bismuth catalyst, slowly dripping 40g of IPDI monomer into the reaction kettle under the protection of nitrogen, finishing the dripping within about 30min, controlling the reaction temperature of the materials to be 80 +/-2 ℃, and reacting for 2 h;
after the heat preservation is finished, the rest 0.04g of catalyst is added, and the heat preservation is continued for 1 hour; cooling to 45 ℃, adding 6g of triethylamine, and stirring for 5 min; then 80g of deionized water and 4g of ethylenediamine chain extender are added, the mixture is stirred and reacted for 30min, and the temperature of the materials is controlled below 40 ℃;
slowly adding the residual 240g of deionized water into the reaction kettle under high-speed stirring, and stirring for 30min to obtain translucent resin;
then, 18g of nano titanium dioxide, 6.5g of zirconium phosphate and 3.5g of BASF 1010 antioxidant are sequentially added into the reacted materials at one time, and stirred and dispersed for 35 min; adding a dispersing agent, a flatting agent, a defoaming agent and a thixotropic agent, stirring and dispersing for 30min, introducing cooling water to cool the materials to about 30 ℃, and filtering by using a 400-mesh steel wire filter screen to obtain the ink component.
The ink components are kept stand for 500 hours, and the layering and coarsening phenomena are not obvious.
Adding the above-mentioned ink components before spraying
XP2655 is stirred and mixed, wherein the mass ratio of the ink components: the curing agent is 100: 8. the ABS plastic substrate is sprayed on the surface of the ABS plastic substrate, the thickness of a sprayed dry film is about 80-150 um, and the ABS plastic substrate is placed for 24 hours at normal temperature after being sprayed. And (3) testing results: the coating material is continuously sprayed without a nozzle blockage, the hardness of the obtained coating material is 1H, the surface is bright, the coating material is free of yellowing and falling after being placed for 2000 hours in an environment with the temperature of 85 ℃ and the humidity of 85 percent, the hundred-grid test is ISO0 grade, and the coating material is free of cracking and falling after being subjected to cold and hot impact (-40-60 ℃ 20 rounds); and in an SGS third-party standard ultraviolet yellowing test, the delta E is less than 0.5, and no yellowing phenomenon occurs.
Example 3
Adding 120g of carbon dioxide-based polycarbonate ether diol (with the number average molecular weight of 7500 and the content of CO2 of 20%) and 60g of fluorine-containing polyether polyol HOCH2CF2O (CF2CF2O)5(CF2O)2CF2CH2OH, 20g of 2 and 2-dimethylolpropionic acid into a 1000ml clean four-mouth reaction bottle, heating to 110 ℃, vacuumizing and removing water for 2 h;
after the dehydration is finished, cooling to 80 ℃, adding 0.2g of organic bismuth catalyst, slowly dripping 50g of IPDI monomer into the reaction kettle under the protection of nitrogen, finishing the dripping within about 30min, controlling the reaction temperature of the materials to be 80 +/-2 ℃, and reacting for 2 h;
after the heat preservation is finished, the rest 0.08g of catalyst is added, and the heat preservation is continued for 1 hour; cooling to 45 ℃, adding 10g of triethylamine, and stirring for 5 min; then 95g of deionized water and 5g of ethylenediamine chain extender are added, the mixture is stirred and reacted for 30min, and the temperature of the materials is controlled below 40 ℃;
slowly adding the residual 285g of deionized water into the reaction kettle under high-speed stirring, and stirring for 30min to obtain semitransparent polyurethane resin;
then, 20g of nano titanium dioxide, 10g of zirconium phosphate and 4g of BASF 1010 antioxidant are sequentially added into the reacted materials at one time, and stirred and dispersed for 35 min; adding a dispersing agent, a flatting agent, a defoaming agent and a thixotropic agent, stirring and dispersing for 30min, introducing cooling water to cool the materials to about 30 ℃, and filtering by using a 400-mesh steel wire filter screen to obtain the ink component.
The ink components are kept stand for 500 hours, and the layering and coarsening phenomena are not obvious.
Adding the above-mentioned ink components before spraying
XP2655 is stirred and mixed, wherein the mass ratio of the ink components: the curing agent is 100: 10. the ABS plastic substrate is sprayed on the surface of the ABS plastic substrate, the thickness of a sprayed dry film is about 80-150 um, and the ABS plastic substrate is placed for 24 hours at normal temperature after being sprayed. And (3) testing results: the coating material is continuously sprayed without a nozzle blockage, the hardness of the obtained coating material is 1H, the surface is bright, the coating material is free of yellowing and falling after being placed for 2000 hours in an environment with the temperature of 85 ℃ and the humidity of 85 percent, the hundred-grid test is ISO0 grade, and the coating material is free of cracking and falling after being subjected to cold and hot impact (-40-60 ℃ 20 rounds); and in an SGS third-party standard ultraviolet yellowing test, the delta E is less than 0.5, and no yellowing phenomenon occurs.
Comparative example 1
The carbon dioxide-based polycarbonate ether diol in example 1 was replaced with polyester diol, and the other components were not changed, and the preparation method was the same as in example 1.
The ink components are kept stand for 500 hours, and the phenomena of layering and coarsening are generated.
Adding into
XP2655 is stirred and mixed, and then is sprayed on the surface of ABS plastic base material, the thickness of the sprayed dry film is about 80-150 um, and the ABS plastic base material is placed for 24 hours at normal temperature after being sprayed. And (3) testing results: the nozzle is blocked after continuously spraying for 4H, the hardness of the obtained coating material is 1H, the surface is slightly rough, the coating material is placed under the environment with the temperature of 85 ℃ and the humidity of 85 percent for 500H to become yellow and fall off, and the test is carried out in terms of BaigeTesting to ISO 3 grade, and cracking and falling off under cold and hot impact (-40-60 ℃ 20 rounds); and in an SGS third-party standard ultraviolet yellowing test, the delta E is less than 0.5, and the yellow is obviously yellowed.
Comparative example 2
The fluorine-containing polyether polyol in example 1 was replaced with polyethylene glycol, and the other components were not changed, and the preparation method was the same as in example 1.
The ink components are kept stand for 500 hours, and the phenomena of layering and coarsening are generated.
Adding into
XP2655 is stirred and mixed, and then is sprayed on the surface of ABS plastic base material, the thickness of the sprayed dry film is about 80-150 um, and the ABS plastic base material is placed for 24 hours at normal temperature after being sprayed. And (3) testing results: the nozzle is blocked after continuously spraying for 2H, the hardness of the obtained coating material is 1H, the surface is rough, the coating material is placed in an environment with the temperature of 85 ℃ and the humidity of 85% for 500H to become yellow and fall, the hundred-grid test is ISO 2 grade, and the coating material cracks and falls under cold and heat impact (-40-60 ℃ 20 rounds); and in an SGS third-party standard ultraviolet yellowing test, the delta E is less than 0.5, and the yellow is obviously yellowed.
Comparative example 3
HOCH2CF2O (CF2O) 4(CF2O)3CF2CH2OH in example 1 was replaced with HOCH2CF2O (CF2O) 7(CF2O)6CF2CH2OH, and other components were not changed, and the preparation method was the same as in example 1.
The ink components are kept stand for 500 hours, and the phenomena of layering and coarsening are slightly generated but are not obvious.
Adding into
XP2655 is stirred and mixed, and then is sprayed on the surface of ABS plastic base material, the thickness of the sprayed dry film is about 80-150 um, and the ABS plastic base material is placed for 24 hours at normal temperature after being sprayed. And (3) testing results: continuously spraying the coating material without a nozzle blockage, wherein the hardness of the obtained coating material is 1H, the surface is bright, the coating material is placed in an environment with the temperature of 85 ℃ and the humidity of 85% for 500H to yellow and fall, the hundred-grid test is ISO0 grade, and the coating material is free of cracking and falling after cold and hot impact (-40-60 ℃ 20 rounds); and in an SGS third-party standard ultraviolet yellowing test, the delta E is less than 0.5, and no yellowing phenomenon occurs.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and the above embodiments are only used for explaining the claims. The scope of the invention is not limited by the description. Any changes or substitutions that can be easily made by those skilled in the art within the technical scope of the present disclosure are included in the scope of the present invention.
Claims (10)
1. The water-based ink for spraying is characterized by comprising the following components in percentage by weight: 10-25% of carbon dioxide-based polycarbonate ether polyol, 5-10% of fluorine-containing polyether polyol, 1-5% of hydroxyl-containing acid, 5-10% of isocyanate, 0.05-0.5% of catalyst, 1-5% of neutralizing agent, 1-5% of chain extender and the balance of water.
2. The water-based ink jet ink as claimed in claim 1, wherein the carbon dioxide-based polycarbonate ether polyol has a number average molecular weight of 4500-8000 and a CO2 content of 10-30%.
3. The water-based ink jet of claim 1, wherein the fluorine-containing polyether polyol is a difunctional hydroxyl fluorine-containing polyether polyol having the molecular formula: HOCH2CF2O (CF2CF2O) p (CF2O) qCF2CH2OH, wherein 6 is more than or equal to p and more than or equal to 2, and 5 is more than or equal to q and more than or equal to 1.
4. The water-based ink jet of claim 3, wherein p is 3 and q is 2.
5. The water-based ink jet ink as claimed in any one of claims 1 to 4, wherein the ink further comprises an appropriate amount of an additive.
6. The water-based ink jet ink as claimed in claim 5, wherein the additives include a dispersant, a leveling agent, an antifoaming agent, a thixotropic agent, and an antioxidant.
7. The water-based ink for spraying according to claim 6, wherein the dispersant is 0.5 to 1 wt%, the leveling agent is 0.5 to 1 wt%, the defoamer is 0.5 to 1 wt%, the thixotropic agent is 0.5 to 1 wt%, and the antioxidant is 0.5 to 2 wt%.
8. The water-based ink for inkjet printing according to any of claims 1 to 4, wherein the ink further comprises 1 to 5% by weight of a pigment and 0.5 to 2% by weight of an abrasion resistant filler.
9. A method of preparing the water-based ink jet according to any of claims 1 to 8, comprising the steps of:
adding the carbon dioxide-based polycarbonate ether polyol, the fluorine-containing polyether polyol and the hydroxy acid into a reaction kettle at one time, heating the reaction kettle, and then vacuumizing to remove water;
after cooling, adding part of the catalyst, slowly dripping the isocyanate into the reaction kettle under the protection of protective gas, and reacting for a certain time after controlling the reaction temperature of the materials;
supplementing the rest catalyst, and continuously preserving heat;
cooling and adding the neutralizer;
adding water and the chain extender, controlling the temperature of the materials, and stirring for reaction;
the residual dewatered water is slowly added into the reaction kettle to be stirred under high-speed stirring.
10. A method according to claim 9, characterized in that finally suitable amounts of additives, pigments and wear-resistant fillers are added.
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