CN107686684A - A kind of aqueous high molecular ceramic pigment grinding-aid dispersant and preparation method and application - Google Patents

A kind of aqueous high molecular ceramic pigment grinding-aid dispersant and preparation method and application Download PDF

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CN107686684A
CN107686684A CN201710618276.XA CN201710618276A CN107686684A CN 107686684 A CN107686684 A CN 107686684A CN 201710618276 A CN201710618276 A CN 201710618276A CN 107686684 A CN107686684 A CN 107686684A
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high molecular
grinding
ceramic pigment
aqueous high
aid
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王燕民
黄广华
潘志东
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South China University of Technology SCUT
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    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D11/00Inks
    • C09D11/30Inkjet printing inks
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F220/00Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
    • C08F220/02Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
    • C08F220/04Acids; Metal salts or ammonium salts thereof
    • C08F220/06Acrylic acid; Methacrylic acid; Metal salts or ammonium salts thereof

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • 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)
  • Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)

Abstract

The invention discloses a kind of aqueous high molecular ceramic pigment grinding-aid dispersant and preparation method and application.This method will(Methyl)Acrylic acid, itaconic acid and monomer molecule(Glycerin monomethyl acrylic ester or methacrylic acid D glucose acylamino- ethyl esters)It is dissolved in the water, obtains mixed liquor;Under nitrogen protective condition, initiator is instilled into gained mixed liquor;After initiator completion of dropwise addition, the isothermal reaction at 60 ~ 90 DEG C;After question response terminates, cooling, reaction solution is then adjusted under condition of ice bath as neutrality, aqueous high molecular ceramic pigment grinding-aid dispersant of the number average molecular weight 8000 ~ 15000.The present invention is intended to provide a kind of can both be used as grinding grinding aid, the aqueous dispersion of stable dispersion particle is can be very good again.

Description

A kind of aqueous high molecular ceramic pigment grinding-aid dispersant and preparation method and application
Technical field
The present invention relates to ceramic pigment (such as praseodymium yellow, cobalt blue, cadmium-selenium red) grinding-aid dispersant field, and in particular to Yi Zhongshui Property polymer ceramic colorant grinding-aid dispersant and preparation method and application.
Background technology
Development of the ceramic ink jet printing in current ceramic industry is quite rapid, and the demand for ceramic ink is also more next It is bigger.Present ceramic ink is primarily present the defects of preparation, for example the grinding of ceramic pigment and dispersion effect are not good enough, so that Make that the pigment granules particle diameter in machine spraying ink is uneven and particle diameter distribution is wider or polished ink in granule stability It is not good enough.These problems severely impact the application of ceramic ink.
Dispersant be it is a kind of there is amphipathic high-molecular compound, it can be effectively reduced pigment granules and solvent it Between interface can, the molecular structure of dispersant is generally made up of two or more components, is anchorage part and scattered part respectively. Anchorage part can be with pigment granules surface metal ion complexation or attraction, make dispersant molecule by physically or chemically adsorbing On pigment granules surface, scattered part can be generally stretched among solvent well.
Dispersant is generally divided into organic solvent dispersion agent and the class of aqueous dispersion two, is according to colorant in ceramic ink mainly Using which kind of decentralized medium as solvent.If being referred to as organic solvent base ink using organic solvent, if being made using water molten Agent is referred to as water-based ink.Solvent of the water as ceramic ink, there is the unique advantage of environmental protection, meanwhile, it is in process of production, water base The production equipment of ceramic ink is also allowed for cleaning and washed.At present, the whole world only has ICI, Dupont, DEGO, BYK etc. several Internationally recognizable major company of family produces this product, and production technology is bottled up, and product is sold with monopoly price.China is to water-based The research of polymeric dispersant is started late, and in recent years, China also develops some waterborne polymeric dispersant kinds, but effect It is undesirable, product also non-seriation.On dispersant chain group grappling selection fundamental research it is less, the performance of product with Same kind of products at abroad compares also larger gap.In addition to divergent function, waterborne polymeric dispersant is in ultra-fine wet grinding There is grinding aid effect in journey.Its grinding aid effect is mainly manifested in reduction grain graininess, and the physico-chemical property and reduction for improving particle are ground Electric mill consumes aspects.At present, domestic and international more common technology concentrates on small molecule grinding aid (such as triethanolamine, polyalcohol). Also there is a small amount of disclosure on Mcromolecular grinding aid, such as patent CN103936924A, this is a kind of Mcromolecular grinding aid of slag.But For grinding aid and divergent function are integrated into a high molecular polymer, this product is still more rare, therefore, for Ground in aqueous ceramic colorant and the exploitation of scattered difunctional high molecular polymer will be as the side of future products exploitation One of to.
The content of the invention
The invention provides a kind of aqueous ceramic colorant macromolecule grinding-aid dispersant and preparation method thereof, the dispersant can Help improves the grinding efficiency of colorant, and is allowed to the effect for reaching submicron order and stable ceramic ink in the short period of time Fruit, present invention also offers application of the dispersant in terms of grinding.
The present invention is achieved through the following technical solutions.
A kind of aqueous high molecular ceramic pigment grinding-aid dispersant, the formula of the dispersant are as follows:
Wherein, A=H or Me;
The mol ratio of x, y, z is 10:5:(0.25~1).
Preferably, the number-average molecular weight of the aqueous high molecular ceramic pigment grinding-aid dispersant is 8000~15000.
A kind of preparation method of above-described aqueous high molecular ceramic pigment grinding-aid dispersant, comprises the following steps:
(1) (methyl) acrylic acid, itaconic acid and monomer molecule are dissolved in the water, obtain mixed liquor;
(2) under nitrogen protective condition, initiator is instilled into mixed liquor obtained by step (1);
(3) after initiator completion of dropwise addition, the isothermal reaction at 60~90 DEG C;
(4) after question response terminates, cooling, reaction solution is then adjusted under condition of ice bath as neutrality, obtains aqueous high molecular pottery Porcelain color grinding-aid dispersant;
The monomer molecule is glycerin monomethyl acrylic ester (GB1) or methacrylic acid D-Glucose acylamino- ethyl ester (GB2);(methyl) acrylic acid, itaconic acid and the monomer molecule are reaction monomers.
Preferably, the gross mass of monomer molecule is 30 parts in step (1), and distilled water is 70 parts.
Preferably, (methyl) acrylic acid, itaconic acid, the mol ratio of monomer molecule are 10 described in step (1):5:(0.25~ 1)。
Preferably, (methyl) acrylic acid, itaconic acid, the specific dosage of monomer molecule are as shown in table 1 described in step (1).
Table 1
Number-average molecular weight is about 8000~15000, mol ratio (x:y:Z)=10:5:0.25~1.
Preferably, step (2) described initiator is ammonium persulfate aqueous solution.
Preferably, the addition of step (2) described initiator is the 1%-3% of reaction monomers gross mass.
Preferably, step (2) described ammonium persulfate is to be added in a manner of constant pressure instills in mixed liquor, instills institute's used time Between be 20~30 minutes.
Preferably, the mass concentration of monomer is 30%~40% in the reaction solution of step (3).
Preferably, the time of step (3) described reaction is 2~3 hours.
Preferably, step (4) cooling is to be down to room temperature.
Preferably, step (4) the regulation reaction solution is that neutrality is that to be adjusted to pH value using the NaOH aqueous solution be 7~8.
A kind of application of the above-described aqueous high molecular ceramic pigment grinding-aid dispersant in colorant grinding;It is described water-based The addition of polymer ceramic colorant grinding-aid dispersant is the 0.8wt% of colorant.
Preferably, the application specifically includes following steps:Aqueous high molecular ceramic pigment grinding-aid dispersant is added into ceramics Ground in colorant (such as praseodymium yellow), the addition of described aqueous high molecular grinding-aid dispersant is the 0.8% of ceramic pigment quality;Should Process of lapping using high-energy-density horizontal sand mill in 1995rpm, under conditions of making abrasive media with the stable zirconium oxide bead of yttrium, Grinding 30 minutes, the solid content of colorant is 30~40wt.%.Then the mill base after grinding is tested into its granularity with laser particle analyzer Mill base, is finally fitted into 20ml colorimetric cylinder by distribution, rotating cylinder viscometer measure viscosity, stands observation sedimentation situation.
The present invention is solved the problems, such as to grind and disperse on ceramic pigment, and the water-based of the present invention is added in ceramic pigment Polymer ceramic colorant grinding-aid dispersant can be effectively reduced particle size in the short period of time, and can be in the condition of standing Under stablize one section of longer time, meanwhile, obtain the less mill base of viscosity, this is makees ceramic ink and laid a good foundation in next step.
Compared with prior art, the invention has the advantages that:
1st, dispersant of the invention both can reach stable dispersion pigment granules again as the grinding grinding aid of colorant Effect, improve the grinding efficiency of colorant.
2nd, dispersant of the invention can be very good to reduce the viscosity of slurry during grinding aid, be allowed to preferable flowing Property.
3rd, dispersant of the invention belongs to aqueous tenside, more friendly to environment.
Embodiment
It is further described below in conjunction with specific implementation of the example to the present invention, but embodiments of the present invention are not limited to This.
Embodiment 1
Commercially available GMA (4.95g) is added in 50ml distilled water, be 95 DEG C in temperature Under the conditions of flow back 9 hours after, the solution clarified, it is monomer GB1 to obtain white solid with the method for freeze-drying.
By acrylic acid (4g;2eq), itaconic acid (3.6g;1eq) and monomer GB1 (0.4g;0.1eq) it is added to 100ml circle In the flask of bottom, distilled water (17ml) dissolving is added, initiator ammonium persulfate water is gradually then added dropwise under conditions of nitrogen protection Solution (1.5wt%;120mg), the time used in instillation is 25 minutes.After being kept for two hours under conditions of 85 DEG C, glued The liquid of thick shape, and, aqueous high molecular ceramics are obtained in being carried out immediately under conditions of ice bath with 10mol/L sodium hydroxide solutions Colorant grinding-aid dispersant S1, number-average molecular weight 10430.
Embodiment 2
Monomer GB1 is obtained according to the method in embodiment 1.By acrylic acid (4g;2eq), itaconic acid (3.6g;It is 1eq) and single Body GB1 (0.8g;0.2eq) it is added in 100ml two mouthfuls of round-bottomed flasks, distilled water (18ml) dissolving is added, then in nitrogen The initiator ammonium persulfate aqueous solution (1.4wt% is gradually added dropwise under conditions of protection;118mg), it is 30 points to instill the time used Clock.After being kept for two hours under conditions of 85 DEG C, thick liquid is obtained, uses 10mol/L under conditions of ice bath immediately Sodium hydroxide solution is neutralized, and obtains aqueous high molecular ceramic pigment grinding-aid dispersant S2, number-average molecular weight 9508.
Embodiment 3
Monomer GB1 is obtained according to the method in embodiment 1.By methacrylic acid (3.3g;2eq), itaconic acid (2.5g; 1eq) and GB1 (0.3g;0.1eq) it is added in 100ml two mouthfuls of round-bottomed flasks, adds distilled water (10ml) dissolving, Ran Hou The initiator ammonium persulfate aqueous solution (3wt% is gradually added dropwise under conditions of nitrogen protection;183mg), the time used in instillation is 25 points Clock.After being kept for one and a half hours under conditions of 78 DEG C, thick liquid is obtained, uses 10mol/ under conditions of ice bath immediately L sodium hydroxide solutions are neutralized, and obtain aqueous high molecular ceramic pigment grinding-aid dispersant S3, number-average molecular weight 8560.
Embodiment 4
Monomer GB1 is obtained according to the method in embodiment 1.By methacrylic acid (3.3g;2eq), itaconic acid (2.5g; 1eq) and GB1 (0.6g;0.2eq) it is added in 100ml two mouthfuls of round-bottomed flasks, adds distilled water (12ml) dissolving, Ran Hou The initiator ammonium persulfate aqueous solution (3wt% is gradually added dropwise under conditions of nitrogen protection;190mg), the time used in instillation is 30 points Clock.After being kept for one hour under conditions of 80 DEG C, thick liquid is obtained, uses 10mol/L hydrogen under conditions of ice bath immediately Sodium hydroxide solution is neutralized, and obtains aqueous high molecular ceramic pigment grinding-aid dispersant S4, number-average molecular weight 8950.
Embodiment 5
By commercially available methacrylic chloride (6.5g;1eq) with ethanolamine hydrochloric salt (10ml;1.43eq) it is added to 100ml Round-bottomed flask in, then add polymerization inhibitor (hydroquinones, 0.25g) under the protective condition of nitrogen, be heated to 95 DEG C backflow One hour, then cool the temperature to 70 DEG C one hour, THF dissolved solids are added after heating-up temperature then is down into 40 DEG C, afterwards Adding cold petroleum ether has solid precipitation, is filtered with funnel, collects filter residue, then with ethyl acetate and the mixed solvent of isopropanol (volume ratio 3:7) recrystallization three times, obtains cream colored solid product as the (production of methacrylic acid -2- amino-ethyls ester hydrochloride 67%) rate is.
Obtained methacrylic acid -2- amino-ethyls ester hydrochloride (16g, 96.6mmol) is dissolved with 80ml methanol Afterwards, add at normal temperatures commercially available glucolactone (10g, 56.2mmol) then add polymerization inhibitor (hydroquinones, 0.55g), after instilling triethylamine (8ml), solvent is spin-dried for after stirring 5 hours at normal temperatures, then by solid dissolving in dichloromethane In, it is filtrated to get white crystalline solid, as monomer GB2 (yield 83%).
Acrylic acid (4g, 2eq), itaconic acid (3.6g, 1eq) and monomer GB2 (0.85g, 0.1eq) are added to 100ml's In two mouthfuls of round-bottomed flasks, distilled water (17ml) dissolving is added, initiator over cure is gradually then added dropwise under conditions of nitrogen protection Sour aqueous ammonium (2wt%;170mg), the time used in instillation is 30 minutes.After being kept for 3 hours under conditions of 85 DEG C, obtain Thick liquid, and, aqueous high molecular pottery is obtained in being carried out immediately under conditions of ice bath with 10mol/L sodium hydroxide solutions Porcelain color grinding-aid dispersant S5, number-average molecular weight 11500.
Embodiment 6
Monomer GB2 is obtained according to the method in embodiment 5.By acrylic acid (4g;2eq), itaconic acid (3.6g;1eq) and GB2 (0.425g;0.05eq) it is added in 100ml two mouthfuls of round-bottomed flasks, adds distilled water (15ml) dissolving, then protected in nitrogen The initiator ammonium persulfate aqueous solution (1.8wt% is gradually added dropwise under conditions of shield;144mg), the time used in instillation is 30 minutes. After being kept for 1.5 hours under conditions of 80 DEG C, thick liquid is obtained, uses 10mol/L hydroxides under conditions of ice bath immediately Sodium solution is neutralized, and obtains aqueous high molecular ceramic pigment grinding-aid dispersant S6, number-average molecular weight 12050.
Embodiment 7
Monomer GB2 is obtained according to the method in embodiment 5.By methacrylic acid (3.3g;2eq), itaconic acid (2.5g; 1eq) and GB2 (0.6g;0.1eq) it is added in 100ml two mouthfuls of round-bottomed flasks, adds distilled water (12ml) dissolving, Ran Hou The initiator ammonium persulfate aqueous solution (2.5wt% is gradually added dropwise under conditions of nitrogen protection;160mg), the time used in instillation is 25 Minute.After being kept for two and one-half- hours under conditions of 80 DEG C, thick liquid is obtained, is used immediately under conditions of ice bath 10mol/L sodium hydroxide solutions are neutralized, and obtain aqueous high molecular ceramic pigment grinding-aid dispersant S7, and number-average molecular weight is 8650。
Embodiment 8
Monomer GB2 is obtained according to the method in embodiment 5.By methacrylic acid (3.3g;2eq), itaconic acid (2.5g; 1eq) and GB2 (0.3g;0.05eq) it is added in 100ml two mouthfuls of round-bottomed flasks, adds distilled water (11ml) dissolving, Ran Hou The initiator ammonium persulfate aqueous solution (2.8wt% is gradually added dropwise under conditions of nitrogen protection;170mg), the time used in instillation is 30 Minute.After being kept for two hours under conditions of 85 DEG C, thick liquid is obtained, uses 10mol/ under conditions of ice bath immediately L sodium hydroxide solutions are neutralized, and obtain aqueous high molecular ceramic pigment grinding-aid dispersant S8, number-average molecular weight 8520.
Aqueous high molecular ceramic pigment grinding-aid dispersant prepared by above example 1-8 is added in ceramic pigment (praseodymium yellow) Grinding, the addition of described aqueous high molecular grinding-aid dispersant are the 0.8% of ceramic pigment quality, and the process of lapping is using high Can density horizontal sand mill in 1995rpm, under conditions of making abrasive media with the stable zirconium oxide bead of yttrium, grind 30 minutes, color The solid content of material is 35wt%.Then the mill base after grinding is tested into its size distribution, rotating cylinder viscometer with laser particle analyzer Viscosity is determined, finally mill base is fitted into 20ml colorimetric cylinder, stands and observes mill base in the 1st day, the 10th day, the sedimentation of the 15th day Situation, it the results are shown in Table 2.
Table 2
Uniformity (sharpness) n=(D90-D10)/D50;D50 represents average grain diameter;D90 represents the cumulative particle sizes of sample Distribution number reaches particle diameter corresponding when 90%.
As shown in table 2, compared with conventional dispersant lauryl sodium sulfate (SDS), the water-based high score prepared by the present invention Sub- ceramic pigment grinding-aid dispersant has larger advantage in terms of grinding aid, scattered and grinding disposed slurry viscosity.

Claims (10)

1. a kind of aqueous high molecular ceramic pigment grinding-aid dispersant, it is characterised in that the formula of the dispersant is as follows:
Wherein, A=H or Me;
The mol ratio of x, y, z is 10:5:(0.25~1).
2. a kind of aqueous high molecular ceramic pigment grinding-aid dispersant according to claim 1, it is characterised in that described water-based The number-average molecular weight of polymer ceramic colorant grinding-aid dispersant is 8000~15000.
3. preparing a kind of method of aqueous high molecular ceramic pigment grinding-aid dispersant described in claim any one of 1-2, it is special Sign is, comprises the following steps:
(1) (methyl) acrylic acid, itaconic acid and monomer molecule are dissolved in the water, obtain mixed liquor;
(2) under nitrogen protective condition, initiator is instilled into mixed liquor obtained by step (1);
(3) after initiator completion of dropwise addition, the isothermal reaction at 60~90 DEG C;
(4) after question response terminates, cooling, reaction solution is then adjusted under condition of ice bath as neutrality, obtains aqueous high molecular ceramic pigment Expect grinding-aid dispersant;
The monomer molecule is glycerin monomethyl acrylic ester or methacrylic acid D-Glucose acylamino- ethyl ester;(methyl) Acrylic acid, itaconic acid and monomer molecule are reaction monomers.
4. a kind of preparation method of aqueous high molecular ceramic pigment grinding-aid dispersant according to claim 3, its feature exist In (methyl) acrylic acid, itaconic acid, the mol ratio of monomer molecule are 10 described in step (1):5:(0.25~1).
5. a kind of preparation method of aqueous high molecular ceramic pigment grinding-aid dispersant according to claim 3, its feature exist In step (2) described initiator is ammonium persulfate aqueous solution.
6. a kind of preparation method of aqueous high molecular ceramic pigment grinding-aid dispersant according to claim 3, its feature exist In the addition of step (2) described initiator is the 1%-2% of reaction monomers gross mass.
7. a kind of preparation method of aqueous high molecular ceramic pigment grinding-aid dispersant according to claim 3, its feature exist In step (2) described initiator is to be added in a manner of constant pressure instills in mixed liquor, and the time used in instillation is 20~30 points Clock.
8. a kind of preparation method of aqueous high molecular ceramic pigment grinding-aid dispersant according to claim 3, its feature exist In the mass concentration of reaction monomers is 30%~40% in the reaction solution of step (3).
9. a kind of preparation method of aqueous high molecular ceramic pigment grinding-aid dispersant according to claim 3, its feature exist In the time of step (3) described reaction is 2~3 hours.
10. a kind of aqueous high molecular ceramic pigment grinding-aid dispersant described in claim any one of 1-2 is in colorant grinding Using.
CN201710618276.XA 2017-07-26 2017-07-26 A kind of aqueous high molecular ceramic pigment grinding-aid dispersant and preparation method and application Pending CN107686684A (en)

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Cited By (2)

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CN108409902A (en) * 2018-03-27 2018-08-17 华南理工大学 Macromolecule grinding-aid dispersant and its application
CN108409907A (en) * 2018-03-27 2018-08-17 华南理工大学 Copolymerized macromolecule grinding-aid dispersant and the preparation method and application thereof

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CN104910315A (en) * 2015-07-14 2015-09-16 唐山市龙亿科技开发有限公司 Method for preparing polycarboxylate-type ceramic dispersant by use of normal temperature method

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CN108409902A (en) * 2018-03-27 2018-08-17 华南理工大学 Macromolecule grinding-aid dispersant and its application
CN108409907A (en) * 2018-03-27 2018-08-17 华南理工大学 Copolymerized macromolecule grinding-aid dispersant and the preparation method and application thereof

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Application publication date: 20180213