CN103554349B - Self-crosslinking acrylic ester emulsion and preparation method thereof - Google Patents
Self-crosslinking acrylic ester emulsion and preparation method thereof Download PDFInfo
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- CN103554349B CN103554349B CN201310539402.4A CN201310539402A CN103554349B CN 103554349 B CN103554349 B CN 103554349B CN 201310539402 A CN201310539402 A CN 201310539402A CN 103554349 B CN103554349 B CN 103554349B
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Abstract
The invention discloses a kind of self-crosslinking acrylic ester emulsion and preparation method thereof, this self-crosslinking acrylic ester emulsion is made up of (methyl) acrylate monomer, function monomer, cross-linking monomer, linking agent, emulsifying agent A, emulsifying agent B, buffer reagent, initiator, oxygenant, reductive agent and deionized water; Wherein reductive agent is the FF6M high molecular polymerization novel reducer that German Brueggemann company produces, does is emulsifying agent A the emulsifying agent AEROSOL that Qing Te company of the U.S. produces? do are A-501, emulsifying agent B the emulsifying agent AEROSOL that Qing Te company of the U.S. produces? MA-80; Preparation process comprises pre-emulsification, emulsification and aftertreatment.The superfine glass fibre partition board obtained by self-crosslinking acrylic ester emulsion of the present invention has lower potassium permanganate reduzate content, and rate of liquid aspiration is very fast, and liquid absorption is higher, excellent performance.
Description
Technical field
The present invention relates to a kind of self-crosslinking acrylic ester emulsion and preparation method thereof, particularly relate to and be a kind ofly applicable to self-crosslinking acrylic ester emulsion preparing superfine glass fibre partition board and preparation method thereof.
Background technology
Superfine glass fibre partition board is a kind of type material be composited by beta glass fibre mat and glass wool, has good physical strength and anti-vibration performance, and resistivity rate is low, porosity is high, capacity is large, and it is strong that the store battery assembled with this dividing plate starts ability, and work-ing life is also longer.The internal performance of this superfine glass fibre partition board comprises tensile strength, rate of liquid aspiration, potassium permanganate reduzate content and acidproof scale resistance, the principal element affecting superfine glass fibre partition board performance is then the binding agent used in its preparation process, and self-crosslinking acrylic ester emulsion is then a kind of binding agent the most frequently used at present.
Self-crosslinking acrylic ester emulsion is normally formed through radical polymerization by (methyl) vinylformic acid (ester) monomer, cross-linking monomer, emulsifying agent, buffer reagent, initiator and deionized water etc.Wherein cross-linking monomer is all adopt N hydroxymethyl acrylamide mostly, but this cross-linking monomer can produce formaldehyde in cross-linking process, thus makes the acrylic ester emulsion obtained have larger harm to human body.
Chinese patent literature CN102358769A discloses a kind of normal temperature self-crosslinking acrylic emulsion and preparation method thereof, and this emulsion is formed by free radical polymerization by deionized water, emulsifying agent RN-30, butyl acrylate, methyl methacrylate, Hydroxyethyl acrylate, vinylformic acid, vinyltrimethoxy silane, sodium bicarbonate, ammonium persulphate, diacetone-acryloamide(DAA), adipic dihydrazide, oxygenant tertbutyl peroxide, reductive agent rongalite and ammoniacal liquor.The deficiency of the document is: the wetting ability of (1) emulsifying agent RN-30 own is just poor, and all adopt this emulsifying agent when pre-emulsification and emulsification, make the emulsion wettability that finally obtains poor like this, the superfine glass fibre partition board rate of liquid aspiration adopting the poor emulsion of this wettability to prepare is comparatively slow, and liquid absorption is less.(2) post-processing stages adopts oxygenant tertbutyl peroxide and reductive agent rongalite to remove residual monomer, and on the one hand, this mode removal efficiency is low, and poor effect still has the residual monomer of larger content; On the other hand, rongalite is adopted also easily to produce formaldehyde, thus harmful.The most important thing is, the unsaturated double-bond in residual monomer and formaldehyde all have certain reductibility, thus easily and potassium permanganate react, finally cause obtained superfine glass fibre partition board potassium permanganate reduzate content higher, have impact on product performance.Therefore, this self-crosslinking acrylic ester emulsion is not suitable for and prepares superfine glass fibre partition board.
Summary of the invention
The object of the invention is to solve the problem, a kind of self-crosslinking acrylic ester emulsion being applicable to the superfine glass fibre partition board of processability excellence is provided.
Another object of the present invention is to the preparation method that above-mentioned self-crosslinking acrylic ester emulsion is provided.
The technical scheme realizing one of the object of the invention is: a kind of self-crosslinking acrylic ester emulsion, is made up of the component of following weight per-cent: (methyl) acrylate monomer of 40% ~ 50%; The function monomer of 0.3% ~ 1.5%; The cross-linking monomer of 1.0% ~ 3.0%; The linking agent of 0.5% ~ 1.5%; The emulsifying agent A of 0.5% ~ 1.5%; The emulsifying agent B of 0.1% ~ 0.2%; The buffer reagent of 0.1% ~ 0.3%; The initiator of 0.15% ~ 0.4%; The oxygenant of 0.05% ~ 0.2%; The reductive agent of 0.05% ~ 0.2%; The deionized water of 45% ~ 55%; Described reductive agent is the FF6M high molecular polymerization novel reducer that German Brueggemann company produces.
Described emulsifying agent A is the emulsifying agent AEROSOLA-501 that Qing Te company of the U.S. produces; Described emulsifying agent B is the emulsifying agent AEROSOLMA-80 that Qing Te company of the U.S. produces.
Described (methyl) acrylate monomer is one in ethyl propenoate, butyl acrylate, methyl methacrylate, β-dimethyl-aminoethylmethacrylate, butyl methacrylate or two kinds or three kinds; Described function monomer is one in vinylformic acid, methacrylic acid, butenoic acid, methylene-succinic acid or two kinds or three kinds.
Described cross-linking monomer is diacetone-acryloamide(DAA); Described linking agent is adipic dihydrazide.
Described buffer reagent is sodium bicarbonate; Described initiator is ammonium persulphate; Described oxygenant is tertbutyl peroxide.
The technical scheme realizing another object of the present invention is: the preparation method of above-mentioned self-crosslinking acrylic ester emulsion, has following steps:
1. pre-emulsification: the deionized water and the emulsifying agent A that add 20% ~ 30% of the ionized water gross weight that accounts in pre-emulsification still; After stirring, add function monomer, cross-linking monomer and (methyl) acrylate monomer successively, continue to stir and carry out pre-emulsification, obtain pre-emulsion stand-by.
2. emulsification: first, adds the deionized water of 45% ~ 55% of the ionized water gross weight that accounts for, emulsifying agent B and buffer reagent in reactor, stir be warming up to 75 DEG C ~ 80 DEG C, add account for the pre-emulsion gross weight that 1. step obtains 5% ~ 15% pre-emulsion; Then, add pre-cast initiation solution, now temperature rises gradually; Described pre-cast initiation solution by account for initiator gross weight 70% ~ 80% initiator and deionized water form; Then, when reaching 84 DEG C ~ 86 DEG C to temperature and no longer rise, slowly drip step 1. in residue pre-emulsion, drip residue initiation solution simultaneously; Drip off and be warming up to 88 DEG C ~ 90 DEG C insulation 50min ~ 70min; Described residue initiation solution by account for initiator gross weight 20% ~ 30% initiator and deionized water form.
3. aftertreatment: after insulation terminates, be first cooled to 55 DEG C ~ 65 DEG C, add the oxidizing agent solution be made up of oxygenant and deionized water and the reductant solution be made up of reductive agent and deionized water successively, adds insulation 0.5h ~ 1.0h; Be cooled to envrionment temperature again, add the cross-linking agent solution be made up of linking agent and deionized water, stir, filter discharging, obtain self-crosslinking acrylic ester emulsion.
The positively effect that the present invention has: (1) self-crosslinking acrylic ester emulsion of the present invention adopts FF6M high molecular polymerization novel reducer to replace rongalite, so not only substantially increase the efficiency removing residual monomer, considerably reduce the residual quantity of monomer, and avoid the generation of formaldehyde, the superfine glass fibre partition board obtained by this emulsion is made to have lower potassium permanganate reduzate content, excellent performance.(2) self-crosslinking acrylic ester emulsion of the present invention adopts emulsifying agent AEROSOLA-501 in the pre-emulsification stage, AEROSOLMA-80 is adopted at emulsifying stage, emulsifying property and wettability are taken into account like this, especially emulsifying agent AEROSOLMA-80 has the few and characteristic of instability of foam, make the emulsion finally obtained have splendid wettability, finally make that the superfine glass fibre partition board rate of liquid aspiration that obtained by this emulsion is very fast, liquid absorption is higher.(3) self-crosslinking acrylic ester emulsion preparation manipulation of the present invention is simple, and without the need to special equipment, and reaction is easy to control, and is applicable to suitability for industrialized production.(4) superfine glass fibre partition board be made up of self-crosslinking acrylic ester emulsion of the present invention also has the advantages such as aperture is little, surface-area is large, porosity is high, chemical purity is high, detrimental impurity is few, resistivity is low, and has extraordinary acid resistance and oxidation-resistance.
Embodiment
(embodiment 1)
The preparation method of the self-crosslinking acrylic ester emulsion of the present embodiment, has following steps:
1. pre-emulsification:
(0 ~ 40 DEG C at ambient temperature, lower same), to the emulsifying agent A(the present embodiment employing with the deionized water and 5kg that add 60kg in the pre-emulsification still of agitator, reflux exchanger and thermometer is the AEROSOLA-501 that Qing Te company of the U.S. produces), stir 15 minutes with the speed of 150 revs/min.
After stirring, add the ethyl propenoate of the methacrylic acid of 3kg, the diacetone-acryloamide(DAA) of 7kg, the methyl methacrylate of 80kg and 130kg successively, add, first rotating speed is risen to 450 revs/min to stir 30 minutes, rotating speed is down to 100 revs/min to stir 10 minutes, the pre-emulsion obtaining 285kg is stand-by again.
2. emulsification:
First, at ambient temperature, in the reactor with agitator, reflux exchanger and thermometer, add the deionized water of 140kg, emulsifying agent B(the present embodiment of 0.5kg adopt is the AEROSOLMA-80 that Qing Te company of the U.S. produces) and the buffer reagent sodium bicarbonate of 0.5kg, stirring is warming up to 78 DEG C ± 1 DEG C, adds pre-emulsion that 1. 28.5kg step obtain as seed liquor.
Then, add pre-cast initiation solution (being made up of the ammonium persulphate of 0.7kg and the deionized water of 21kg), now temperature rises gradually.
Then, when reaching 85 DEG C ± 1 DEG C to temperature and no longer rise (about 20 minutes), slowly drip step 1. in residue pre-emulsion, drip residue initiation solution (being made up of the ammonium persulphate of 0.2kg and the deionized water of 8kg) simultaneously.
Whole time for adding controls at 3h ~ 4h, and temperature controls at 85 DEG C ± 1 DEG C.
Drip off and be warming up to 89 DEG C ± 1 DEG C insulation 1h.
3. aftertreatment:
After insulation terminates, be cooled to 60 DEG C ± 1 DEG C, first add oxidizing agent solution (being made up of the tertbutyl peroxide of 0.3kg and the deionized water of 5kg), after stirring 5min, add reductant solution (the FF6M high molecular polymerization novel reducer produced by the German Brueggemann company of 0.3kg and the deionized water of 10kg form) again, then after being incubated 40min, be cooled to 35 DEG C, add cross-linking agent solution (being made up of the adipic dihydrazide of 3.5kg and the deionized water of 15kg), add and continue to stir 10min, filter discharging, obtaining solid content is 45wt%, viscosity is 80mPas, milky self-crosslinking acrylic ester emulsion.
(embodiment 2 ~ embodiment 3)
Each embodiment is substantially the same manner as Example 1, and difference is in table 1.
Table 1
(application examples)
Self-crosslinking acrylic ester emulsion obtained for embodiment 1 to embodiment 3 is applied to obtained superfine glass fibre partition board in the moulding process of superfine glass fibre partition board, product performance are according to JB/T7603.1-2008 " lead acid cell superfine glass fibre partition board " standard test, and each performance index are in table 2.
Table 2
(contrast application examples)
The emulsion applications obtained by Chinese patent literature CN102358769A example 3-1 is obtained superfine glass fibre partition board in the moulding process of superfine glass fibre partition board, product performance are according to JB/T7603.1-2008 " lead acid cell superfine glass fibre partition board " standard test, and each performance index are in table 3.
Table 3
| Project | CN102358769A |
| Tensile strength (felt plate thickness 1 ~ 1.5mm) | 0.9kN/m |
| Resistance | 0.00060Ω/dm 2 |
| Wettability | 65s |
| Potassium permanganate reduzate content | 18mL/g |
| Weight loss in acid | 1.5% |
| Iron level | ≤0.005% |
| Cl content | ≤0.003% |
| Foaminess | Bubble covers sulphuric acid soln surface completely, and not easily breaks |
Claims (4)
1. a preparation method for self-crosslinking acrylic ester emulsion, this self-crosslinking acrylic ester emulsion is made up of the component of following weight per-cent:
(methyl) acrylate monomer of 40% ~ 50%;
The function monomer of 0.3% ~ 1.5%;
The cross-linking monomer of 1.0% ~ 3.0%;
The linking agent of 0.5% ~ 1.5%;
The emulsifying agent A of 0.5% ~ 1.5%; Described emulsifying agent A is the emulsifying agent AEROSOLA-501 that Qing Te company of the U.S. produces;
The emulsifying agent B of 0.1% ~ 0.2%; Described emulsifying agent B is the emulsifying agent AEROSOLMA-80 that Qing Te company of the U.S. produces;
The buffer reagent of 0.1% ~ 0.3%;
The initiator of 0.15% ~ 0.4%;
The oxygenant of 0.05% ~ 0.2%;
The reductive agent of 0.05% ~ 0.2%;
The deionized water of 45% ~ 55%;
Described reductive agent is the FF6M high molecular polymerization novel reducer that German Brueggemann company produces;
It is characterized in that this self-crosslinking acrylic ester emulsion has following steps:
1. pre-emulsification:
Deionized water and the emulsifying agent A of 20% ~ 30% of the ionized water gross weight that accounts for is added in pre-emulsification still; After stirring, add function monomer, cross-linking monomer and (methyl) acrylate monomer successively, continue to stir and carry out pre-emulsification, obtain pre-emulsion stand-by;
2. emulsification:
First, in reactor, add the deionized water of the ionized water gross weight that accounts for 45% ~ 55%, emulsifying agent B and buffer reagent, stir be warming up to 75 DEG C ~ 80 DEG C, add account for the pre-emulsion gross weight that 1. step obtains 5% ~ 15% pre-emulsion;
Then, add pre-cast initiation solution, now temperature rises gradually; Described pre-cast initiation solution by account for initiator gross weight 70% ~ 80% initiator and deionized water form;
Then, when reaching 84 DEG C ~ 86 DEG C to temperature and no longer rise, slowly drip step 1. in residue pre-emulsion, drip residue initiation solution simultaneously; Drip off and be warming up to 88 DEG C ~ 90 DEG C insulation 50min ~ 70min; Described residue initiation solution by account for initiator gross weight 20% ~ 30% initiator and deionized water form;
3. aftertreatment:
After insulation terminates, be first cooled to 55 DEG C ~ 65 DEG C, add the oxidizing agent solution be made up of oxygenant and deionized water and the reductant solution be made up of reductive agent and deionized water successively, add insulation 0.5h ~ 1.0h; Be cooled to envrionment temperature again, add the cross-linking agent solution be made up of linking agent and deionized water, stir, filter discharging, obtain self-crosslinking acrylic ester emulsion.
2. the preparation method of self-crosslinking acrylic ester emulsion according to claim 1, is characterized in that: described (methyl) acrylate monomer is one in ethyl propenoate, butyl acrylate, methyl methacrylate, β-dimethyl-aminoethylmethacrylate, butyl methacrylate or two kinds or three kinds; Described function monomer is one in vinylformic acid, methacrylic acid, butenoic acid, methylene-succinic acid or two kinds or three kinds.
3. the preparation method of self-crosslinking acrylic ester emulsion according to claim 1, is characterized in that: described cross-linking monomer is diacetone-acryloamide(DAA); Described linking agent is adipic dihydrazide.
4. the preparation method of self-crosslinking acrylic ester emulsion according to claim 1, is characterized in that: described buffer reagent is sodium bicarbonate; Described initiator is ammonium persulphate; Described oxygenant is tertbutyl peroxide.
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| CN104059192B (en) * | 2014-07-04 | 2016-03-16 | 青岛科技大学 | A kind of non-commixed type polyacrylic ester water swelling rubber and mass polymerization preparation method thereof |
| CN104277188B (en) * | 2014-09-23 | 2017-02-15 | 合肥乐凯科技产业有限公司 | Self-crosslinking acrylate emulsion as well as preparation method and application thereof |
| CN104910319B (en) * | 2015-06-04 | 2017-06-09 | 东莞长联新材料科技股份有限公司 | It is a kind of to delay polyacrylate dispersion of dye migration and preparation method thereof |
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| CN110685155A (en) * | 2019-10-11 | 2020-01-14 | 西安工程大学 | Quick-drying type crosslinked polyacrylic acid textile size and preparation method thereof |
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| CN111574660B (en) * | 2020-05-26 | 2022-02-08 | 东联北方科技(北京)有限公司 | Preparation method of crosslinked acrylate emulsion and product prepared by preparation method |
| CN112201880B (en) * | 2020-09-28 | 2022-11-11 | 消之源科技技术有限公司 | Preparation method of cooling partition plate for lithium battery |
| CN112724831B (en) * | 2021-04-01 | 2021-07-27 | 佛山市昭景环保科技有限公司 | Water-based treating agent for printing burst-style synthetic leather and preparation method thereof |
| CN114656904B (en) * | 2022-04-12 | 2024-04-05 | 珠海冠宇电池股份有限公司 | Adhesive and battery comprising same |
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| US4414357A (en) * | 1979-11-27 | 1983-11-08 | Glasurit America, Inc. | Polyester or alkyd resin composition containing acrylic microgels |
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