CN103881002A - Vinyl acetate-acrylic emulsion, synthesis method thereof and electrical steel coating - Google Patents
Vinyl acetate-acrylic emulsion, synthesis method thereof and electrical steel coating Download PDFInfo
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- CN103881002A CN103881002A CN201410058268.0A CN201410058268A CN103881002A CN 103881002 A CN103881002 A CN 103881002A CN 201410058268 A CN201410058268 A CN 201410058268A CN 103881002 A CN103881002 A CN 103881002A
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Abstract
The invention discloses vinyl acetate-acrylic emulsion, a synthesis method thereof and an electrical steel coating. The vinyl acetate-acrylic emulsion comprises the following components by weight percent in terms of the total weight of the emulsion: 20.0-45.0% of vinyl acetate, 1.0-10.0% of butyl acrylate, 1.0-10.0% of 2-ethylhexyl acrylate, 1.0-10.0% of methyl methacrylate, 0.2-2.0% of methacrylic acid, 0.2-1.0% of alkylphenol polyoxyethylene ether OP-10, 0.4-2.0% of alkylphenol ether sulfosuccinate sodium salt MS-1, 40.0-65.0% of water, 0.2-1.2% of sodium polymethacrylate, 0.1-1.0% of sodium hydrogen phosphate and 0.2-1.0% of ammonium persulfate. The preparation method is characterized by firstly preparing pre-emulsion and an initiator water solution, mixing the pre-emulsion with the initiator water solution in batches and emulsifying the mixture, thus obtaining pure acrylic emulsion. The pure acrylic emulsion is narrow in particle size distribution and is fine in particle size. The prepared electrical steel coating has good resin dispersibility and long shelf life and is suitable for high-speed roller coating.
Description
Technical field
The electrical steel dope that the present invention relates to a kind of acrylate and vinyl acetate emulsion, its synthetic method and prepare with synthetic acrylate and vinyl acetate emulsion.
Background technology
The main roller coat of electrical steel dope is coated in electrical sheet surface, forms insulating coating through baking-curing.Electrical steel dope is mainly made up of inorganic salt solution, organic resin emulsion, auxiliary agent etc.Conventionally the copolymer emulsion being formed by acrylate and Polymerization of Vac referred to as acrylate and vinyl acetate emulsion.
For the inorganic salt solution in electrical steel dope, because wherein containing water-soluble metal ion, acid ion etc., this just requires organic resin emulsion in inorganic salt solution, not produce breakdown of emulsion and gel joining.After the widely used ACRYLIC EMULSION of electrical steel dope institute is mixed with inorganic salt solution at present, the shelf lives only has 3 days, has affected long-time storage and the use of coating.
Summary of the invention
For solving the problems of the technologies described above, the object of the present invention is to provide a kind of acrylate and vinyl acetate emulsion, after electrical steel inorganic-liquid mixing and stirring, not gel, breakdown of emulsion not, can store for a long time and use.
Another object of the present invention is to provide a kind of synthetic method of acrylate and vinyl acetate emulsion.
A further object of the invention is to provide the electrical steel dope that a kind of acrylate and vinyl acetate emulsion of preparing with the present invention is mixed with, and can store for a long time and use.
In the present invention, percentage ratio is weight percentage.
Technical scheme of the present invention is, a kind of acrylate and vinyl acetate emulsion, and each component accounts for the weight ratio of emulsion total amount:
20.0～45.0% vinyl acetates, 1.0～10.0% butyl acrylates, 1.0～10.0% Isooctyl acrylate monomers, 1.0～10.0% methyl methacrylates, 0.2～2.0% methacrylic acid, 0.2～1.0% alkylphenol polyoxyethylene OP-10,0.4～2.0% alkyl phenol ether sulfo-succinic acid ester sodium salt MS-1,40.0～65.0% water, 0.2～1.2% sodium polymethacrylate, 0.1～1.0% Sodium phosphate dibasic and 0.2～1.0% ammonium persulphate;
The weight ratio of described alkylphenol polyoxyethylene OP-10 and alkyl phenol ether sulfo-succinic acid ester sodium salt MS-1 is 1:5～1:2.
The synthetic method of acrylate and vinyl acetate emulsion of the present invention, comprises the following steps:
A, the weight ratio that accounts for emulsion total amount by the each component of acrylate and vinyl acetate emulsion take each component;
B, the water that the vinyl acetate taking, butyl acrylate, Isooctyl acrylate monomer, methyl methacrylate, methacrylic acid, alkylphenol polyoxyethylene OP-10, alkyl phenol ether sulfo-succinic acid ester sodium salt MS-1, sodium polymethacrylate, Sodium phosphate dibasic and part are taken, mix, stir, pre-emulsification 15～40min, forms " pre-emulsion ";
C, the ammonium persulphate taking is dissolved in the remaining water taking, forms " initiator solution ";
D, " pre-emulsion " prepared by part steps B, stir and be heated to 70～75 DEG C;
E, " initiator solution " prepared by part steps C are slowly added drop-wise in the product that step D makes, and form " seed emulsion ";
In F, " seed emulsion " prepared to step e, slowly drip respectively " initiator solution " prepared by " pre-emulsion " prepared by remaining step B and part steps C simultaneously, then continue " initiator solution " that slowly prepared by the remaining step C of dropping;
G, step F products therefrom is heated to 80～85 DEG C, continues reaction 30～45min, be cooled to 30～55 DEG C, discharging after filtering, obtains acrylate and vinyl acetate emulsion of the present invention.
The weight ratio that the weight of the water that wherein, described in step B, part takes accounts for emulsion total amount is 30.0～45.0%;
Wherein, the weight ratio that " pre-emulsion " that described in step D prepared by part steps B accounts for " pre-emulsion " total amount prepared by step B is 15～20%;
Wherein, the weight ratio that " initiator solution " that prepared by the C of part steps described in step e accounts for " initiator solution " total amount prepared by step C is 25～40%;
Wherein, the weight ratio that " initiator solution " that prepared by the C of part steps described in step F accounts for " initiator solution " total amount prepared by step C is 45～60%;
Electrical steel dope: using the prepared acrylate and vinyl acetate emulsion of the present invention as organic resin emulsion, prepare electrical steel dope, gained electrician coating resin good dispersity, the masking liquid shelf lives is long, be applicable to very much high speed roller coat.
The invention discloses a kind of acrylate and vinyl acetate emulsion, its synthetic method and electrical steel dope, adopt the acrylate and vinyl acetate emulsion prepared of aforesaid method, emulsion particle diameter narrowly distributing, particle diameter are thin; The electrical steel dope that itself and inorganic salt solution are mixed with, resin dispersion is good, the masking liquid shelf lives long, be applicable to very much high speed roller coat, thereby can obtain the good electrical steel coatings of surface quality.
Brief description of the drawings
Below in conjunction with accompanying drawing, the present invention is further described:
Fig. 1 is the FESEM figure of the pure-acrylic emulsion particle described in embodiment 1.
Specific embodiment
Below in conjunction with embodiment, the present invention is further described
Embodiment 1
A kind of acrylate and vinyl acetate emulsion, each component accounts for the weight ratio of emulsion total amount:
35.0% vinyl acetate, 5.0% butyl acrylate, 2.0% Isooctyl acrylate monomer, 5.0% methyl methacrylate, 0.5% methacrylic acid, 0.3% alkylphenol polyoxyethylene OP-10,1.0% alkyl phenol ether sulfo-succinic acid ester sodium salt MS-1,49.6% water, 0.5% sodium polymethacrylate, 0.4% Sodium phosphate dibasic and 0.8% ammonium persulphate.
A kind of synthetic method of acrylate and vinyl acetate emulsion:
A, the weight ratio that accounts for emulsion total amount by the each component of above-mentioned acrylate and vinyl acetate emulsion take each component;
B, the water that the vinyl acetate taking, butyl acrylate, Isooctyl acrylate monomer, methyl methacrylate, methacrylic acid, alkylphenol polyoxyethylene OP-10, alkyl phenol ether sulfo-succinic acid ester sodium salt MS-1, sodium polymethacrylate, Sodium phosphate dibasic and part are taken, mix, stir, pre-emulsification 40min, form " pre-emulsion ", the weight ratio that the weight of the water that described part takes accounts for emulsion total amount is 30.0%;
C, the ammonium persulphate taking is dissolved in the remaining water taking, forms " initiator solution ";
D, " pre-emulsion " prepared by part steps B, stir and be heated to 75 DEG C, and the weight ratio that " pre-emulsion " prepared by described part steps B accounts for " pre-emulsion " total amount prepared by step B is 15%;
E, " initiator solution " prepared by part steps C are slowly added drop-wise in the product of step D gained, form " seed emulsion ", the weight ratio that " initiator solution " prepared by described part steps C accounts for " initiator solution " total amount prepared by step C is 35%;
In F, " seed emulsion " prepared to step e, " initiator solution " prepared by " pre-emulsion " that slowly prepared by the remaining step B of dropping respectively simultaneously and part steps C, the weight ratio that " initiator solution " prepared by described part steps C accounts for " initiator solution " total amount prepared by step C is 50%, then continues slowly to drip " initiator solution " prepared by remaining step C;
G, step F products therefrom is heated to 80 DEG C, continues reaction 30min, be cooled to 30 DEG C, discharging after filtering, obtains acrylate and vinyl acetate emulsion of the present invention.
Electrical steel dope: the acrylate and vinyl acetate emulsion of preparing taking embodiment 1, as organic resin emulsion, is prepared electrical steel dope.
The acrylate and vinyl acetate emulsion that adopts aforesaid method to make, median size is 140nm, and size distribution is even, emulsion velocity of diffusion in inorganic salt solution is fast; After this acrylate and vinyl acetate emulsion and electrical steel inorganic-liquid mixing and stirring, not gel, breakdown of emulsion not, the coating shelf lives can reach 20 days.
Embodiment 2
A kind of acrylate and vinyl acetate emulsion, each component accounts for the weight ratio of emulsion total amount:
20.0% vinyl acetate, 10.0% butyl acrylate, 5.0% Isooctyl acrylate monomer, 10.0% methyl methacrylate, 1.0% methacrylic acid, 0.6% alkylphenol polyoxyethylene OP-10,1.2% alkyl phenol ether sulfo-succinic acid ester sodium salt MS-1,51.2% water, 0.2% sodium polymethacrylate, 0.2% Sodium phosphate dibasic and 0.6% ammonium persulphate.
A kind of synthetic method of acrylate and vinyl acetate emulsion:
A, the weight ratio that accounts for emulsion total amount by the each component of above-mentioned acrylate and vinyl acetate emulsion take each component;
B, the water that vinyl acetate, butyl acrylate, Isooctyl acrylate monomer, methyl methacrylate, methacrylic acid, alkylphenol polyoxyethylene OP-10 alkyl phenol ether sulfo-succinic acid ester sodium salt MS-1, sodium polymethacrylate, Sodium phosphate dibasic and part are taken, stir, mix, pre-emulsification 15min, form " pre-emulsion ", the weight ratio that the weight of the water that described part takes accounts for emulsion total amount is 40%;
C, the ammonium persulphate taking is dissolved in the remaining water taking, forms " initiator solution ".
D, " pre-emulsion " prepared by part steps B, stir and be heated to 70 DEG C, and the weight ratio that " pre-emulsion " prepared by described part steps B accounts for " pre-emulsion " total amount prepared by step B is 20%;
E, " initiator solution " prepared by part steps C are slowly added drop-wise in " pre-emulsion " prepared by step D, form " seed emulsion ", the weight ratio that " initiator solution " prepared by described part steps C accounts for " initiator solution " total amount prepared by step C is 25%;
In F, " seed emulsion " prepared to step e, slowly drip respectively simultaneously " pre-emulsion " prepared by remaining step B and, the weight ratio that " initiator solution " prepared by described part steps C accounts for " initiator solution " total amount prepared by step C is 60%, then continues slowly to drip " initiator solution " prepared by remaining step C.
G, step F products therefrom is heated to 85 DEG C, reaction 45min, is cooled to 50 DEG C, and discharging after filtering, obtains acrylate and vinyl acetate emulsion of the present invention.
Electrical steel dope: the acrylate and vinyl acetate emulsion of preparing taking embodiment 2, as organic resin emulsion, is prepared electrical steel dope.
The acrylate and vinyl acetate emulsion that adopts aforesaid method to make, median size is 130nm, and size distribution is even, emulsion velocity of diffusion in inorganic salt solution is fast; After this acrylate and vinyl acetate emulsion and electrical steel inorganic-liquid mixing and stirring, not gel, breakdown of emulsion not, the coating shelf lives can reach 20 days.
Embodiment 3
A kind of acrylate and vinyl acetate emulsion, each component accounts for the weight ratio of emulsion total amount:
45.0% vinyl acetate, 7.8% butyl acrylate, 10.0% Isooctyl acrylate monomer, 8.0% methyl methacrylate, 1.8% methacrylic acid, 1.0% alkylphenol polyoxyethylene OP-10,1.7% alkyl phenol ether sulfo-succinic acid ester sodium salt MS-1,54.3% water, 1.2% sodium polymethacrylate, 1.0% Sodium phosphate dibasic and 0.2% ammonium persulphate.
A kind of synthetic method of acrylate and vinyl acetate emulsion:
A, the weight ratio that accounts for emulsion total amount by the each component of above-mentioned acrylate and vinyl acetate emulsion take each component;
B, the water that the vinyl acetate taking, butyl acrylate, Isooctyl acrylate monomer, methyl methacrylate, methacrylic acid, alkylphenol polyoxyethylene OP-10, alkyl phenol ether sulfo-succinic acid ester sodium salt MS-1, sodium polymethacrylate, Sodium phosphate dibasic and part are taken, stir, mix, pre-emulsification 35min, form " pre-emulsion ", the weight ratio that the weight of the water that described part takes accounts for emulsion total amount is 45%;
C, the ammonium persulphate taking is dissolved in the remaining water taking, forms " initiator solution ".
D, " pre-emulsion " prepared by part steps B, stir and be heated to 75 DEG C, and the weight ratio that " pre-emulsion " prepared by described part steps B accounts for " pre-emulsion " total amount prepared by step B is 18%;
E, " initiator solution " prepared by part steps C are slowly added drop-wise in the product that step D makes, form " seed emulsion ", the weight ratio that " initiator solution " prepared by described part steps C accounts for " initiator solution " total amount prepared by step C is 35%;
In F, " seed emulsion " prepared to step e, " initiator solution " prepared by " pre-emulsion " that slowly prepared by the remaining step B of dropping respectively simultaneously and part steps C, the weight ratio that " initiator solution " prepared by described part steps C accounts for " initiator solution " total amount prepared by step C is 55%, the more remaining step C that continues slowly to drip " initiator solution " prepared;
G, step F products therefrom is heated to 83 DEG C, reaction 45min, is cooled to 45 DEG C, and discharging after filtering, obtains acrylate and vinyl acetate emulsion of the present invention.
Electrical steel dope: the acrylate and vinyl acetate emulsion of preparing taking embodiment 3, as organic resin emulsion, is prepared electrical steel dope.
The acrylate and vinyl acetate emulsion that adopts aforesaid method to make, median size is 140nm, and size distribution is even, emulsion velocity of diffusion in inorganic salt solution is fast; After this acrylate and vinyl acetate emulsion and electrical steel inorganic-liquid mixing and stirring, not gel, breakdown of emulsion not, the coating shelf lives can reach 18 days.
Embodiment 4
A kind of acrylate and vinyl acetate emulsion, each component accounts for the weight ratio of emulsion total amount:
30.0% vinyl acetate, 3.0% butyl acrylate, 7.0% Isooctyl acrylate monomer, 2.0% methyl methacrylate, 1.2% methacrylic acid, 0.2% alkylphenol polyoxyethylene OP-10,0.8% alkyl phenol ether sulfo-succinic acid ester sodium salt MS-1,62.5% water, 0.9% sodium polymethacrylate, 0.7% Sodium phosphate dibasic and 0.4% ammonium persulphate.
A kind of synthetic method of acrylate and vinyl acetate emulsion:
A, the weight ratio that accounts for emulsion total amount by the each component of above-mentioned acrylate and vinyl acetate emulsion take each component;
B, the water that the vinyl acetate taking, butyl acrylate, Isooctyl acrylate monomer, methyl methacrylate, methacrylic acid, alkylphenol polyoxyethylene OP-10, alkyl phenol ether sulfo-succinic acid ester sodium salt MS-1, sodium polymethacrylate, Sodium phosphate dibasic and part are taken, stir, mix, pre-emulsification 25min, form " pre-emulsion ", the weight ratio that the weight of the water that described part takes accounts for emulsion total amount is 40%;
C, the ammonium persulphate taking is dissolved in the remaining water taking, forms " initiator solution ".
D, " pre-emulsion " prepared by part steps B, stir and be heated to 70 DEG C, and the weight ratio that " pre-emulsion " prepared by described part steps B accounts for " pre-emulsion " total amount prepared by step B is 20%;
E, " initiator solution " prepared by part steps C are slowly added drop-wise in the product of step D gained, form " seed emulsion ", the weight ratio that " initiator solution " prepared by described part steps C accounts for " initiator solution " total amount prepared by step C is 40%;
In F, " seed emulsion " prepared to step e, slowly drip respectively simultaneously " pre-emulsion " prepared by remaining step B and part steps C " initiator solution " prepared, the weight ratio that " initiator solution " prepared by described part steps C accounts for " initiator solution " total amount prepared by step C is 45%, then continues slowly to drip " initiator solution " prepared by remaining step C;
G, step F products therefrom is heated to 85 DEG C, reaction 35min, is cooled to 55 DEG C, and discharging after filtering, obtains acrylate and vinyl acetate emulsion of the present invention.
Electrical steel dope: the acrylate and vinyl acetate emulsion of preparing taking embodiment 4, as organic resin emulsion, is prepared electrical steel dope.
The acrylate and vinyl acetate emulsion that adopts aforesaid method to make, median size is 135nm, and size distribution is even, emulsion velocity of diffusion in inorganic salt solution is fast; After this acrylate and vinyl acetate emulsion and electrical steel inorganic-liquid mixing and stirring, not gel, breakdown of emulsion not, the coating shelf lives can reach 20 days.
The foregoing is only the preferred embodiment of the present invention, for those skilled in the art person, under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications are all considered as protection scope of the present invention.
Claims (8)
1. an acrylate and vinyl acetate emulsion, is characterized in that each component accounts for the weight ratio of emulsion total amount: 20.0～45.0% vinyl acetates, 1.0～10.0% butyl acrylates, 1.0～10.0% Isooctyl acrylate monomers, 1.0～10.0% methyl methacrylates, 0.2～2.0% methacrylic acid, 0.2～1.0% alkylphenol polyoxyethylene OP-10,0.4～2.0% alkyl phenol ether sulfo-succinic acid ester sodium salt MS-1,40.0～65.0% water, 0.2～1.2% sodium polymethacrylate, 0.1～1.0% Sodium phosphate dibasic and 0.2～1.0% ammonium persulphate.
2. acrylate and vinyl acetate emulsion according to claim 1, is characterized in that described alkylphenol polyoxyethylene OP-10 and the weight ratio of alkyl phenol ether sulfo-succinic acid ester sodium salt MS-1 are 1:5～1:2.
3. a synthetic method for the acrylate and vinyl acetate emulsion described in claim 1～2 any one, is characterized in that comprising the following steps:
A, the weight ratio that accounts for emulsion total amount by the each component of acrylate and vinyl acetate emulsion take each component;
B, the water that the vinyl acetate taking, butyl acrylate, Isooctyl acrylate monomer, methyl methacrylate, methacrylic acid, alkylphenol polyoxyethylene OP-10, alkyl phenol ether sulfo-succinic acid ester sodium salt MS-1, sodium polymethacrylate, Sodium phosphate dibasic and part are taken, mix, stir, pre-emulsification 15～40min, forms " pre-emulsion ";
C, the ammonium persulphate taking is dissolved in the remaining water taking, forms " initiator solution ";
D, " pre-emulsion " that part steps B is synthesized, stir and be heated to 70～75 DEG C;
E, synthetic part steps C " initiator solution " is slowly added drop-wise in the product that step D makes, forms " seed emulsion ";
F, in step e synthetic " seed emulsion ", slowly drip respectively remaining step B synthetic " pre-emulsion " and synthetic " initiator solution " of part steps C simultaneously, then continue slowly to drip remaining step C synthetic " initiator solution ";
G, step F products therefrom is heated to 80～85 DEG C, continues reaction 30～45min, be cooled to 30～55 DEG C, discharging after filtering, obtains acrylate and vinyl acetate emulsion of the present invention.
4. the synthetic method of acrylate and vinyl acetate emulsion according to claim 3, the weight ratio that the weight that it is characterized in that described in step B the water that part takes accounts for emulsion total amount is 30.0～45.0%.
5. the synthetic method of acrylate and vinyl acetate emulsion according to claim 3, is characterized in that the weight ratio that part steps B described in step D synthetic " pre-emulsion " accounts for synthetic " pre-emulsion " total amount of step B is 15～20%.
6. the synthetic method of acrylate and vinyl acetate emulsion according to claim 3, is characterized in that the weight ratio that the C of part steps described in step e synthetic " initiator solution " accounts for synthetic " initiator solution " total amount of step C is 25～40%.
7. the synthetic method of acrylate and vinyl acetate emulsion according to claim 3, is characterized in that the weight ratio that the C of part steps described in step F synthetic " initiator solution " accounts for synthetic " initiator solution " total amount of step C is 45～60%.
8. an electrical steel dope, is characterized in that using acrylate and vinyl acetate emulsion claimed in claim 1 as organic resin emulsion synthetic electrical steel dope.
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| CN201410058268.0A CN103881002A (en) | 2014-02-20 | 2014-02-20 | Vinyl acetate-acrylic emulsion, synthesis method thereof and electrical steel coating |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104277618A (en) * | 2014-09-04 | 2015-01-14 | 青阳县双龙涂料有限责任公司 | High-solid-content low-viscosity paint |
| CN107082839A (en) * | 2017-04-25 | 2017-08-22 | 广东银洋环保新材料有限公司 | A kind of coating acrylate and vinyl acetate emulsion and preparation method thereof |
| CN109161265A (en) * | 2018-07-17 | 2019-01-08 | 常州工程职业技术学院 | A kind of electric steel insulating paint acrylate and vinyl acetate emulsion and preparation method thereof |
| CN113817106A (en) * | 2021-09-06 | 2021-12-21 | 西南石油大学 | Modified polyvinyl acetate, preparation method and application thereof, and oil-based drilling fluid |
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| CN103588929A (en) * | 2013-11-15 | 2014-02-19 | 马钢(集团)控股有限公司 | Pure acrylic emulsion, preparation method thereof and electrical steel paint |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104277618A (en) * | 2014-09-04 | 2015-01-14 | 青阳县双龙涂料有限责任公司 | High-solid-content low-viscosity paint |
| CN107082839A (en) * | 2017-04-25 | 2017-08-22 | 广东银洋环保新材料有限公司 | A kind of coating acrylate and vinyl acetate emulsion and preparation method thereof |
| CN109161265A (en) * | 2018-07-17 | 2019-01-08 | 常州工程职业技术学院 | A kind of electric steel insulating paint acrylate and vinyl acetate emulsion and preparation method thereof |
| CN109161265B (en) * | 2018-07-17 | 2021-05-25 | 常州工程职业技术学院 | Vinyl acetate-acrylic emulsion for electrical steel insulating coating and preparation method thereof |
| CN113817106A (en) * | 2021-09-06 | 2021-12-21 | 西南石油大学 | Modified polyvinyl acetate, preparation method and application thereof, and oil-based drilling fluid |
| CN113817106B (en) * | 2021-09-06 | 2023-12-22 | 西南石油大学 | Modified polyvinyl acetate, preparation method and application thereof, and oil-based drilling fluid |
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