CN102911580A - Crosslinked acrylic emulsion for waterproofing paints and preparation method thereof - Google Patents
Crosslinked acrylic emulsion for waterproofing paints and preparation method thereof Download PDFInfo
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- CN102911580A CN102911580A CN2012104127360A CN201210412736A CN102911580A CN 102911580 A CN102911580 A CN 102911580A CN 2012104127360 A CN2012104127360 A CN 2012104127360A CN 201210412736 A CN201210412736 A CN 201210412736A CN 102911580 A CN102911580 A CN 102911580A
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Abstract
The invention discloses a crosslinked acrylic emulsion for waterproofing paints, which comprises the following components in percentage by weight of the emulsion: 35-40% of butyl acrylate, 10-15% of styrene, 0.5-1% of hydroxymethyl acrylamide, 1.0-1.5% of diacetone-acryloamide, 1-3% of emulsifier, 0.2-0.5% of persulfate, 0.05-0.08% of adipic dihydrazide, 0.3% of defoamer, 40-50% of water and neutralizer, wherein the use amount of neutralizer is enough for adjusting the pH value of the emulsion to 6.5-7.5. According to the invention, hydroxymethyl acrylamide and diacetone-acryloamide are used as crosslinking monomers and adipic dihydrazide serves as a curing agent; and after being crosslinked and cured, a paint film is high in crosslinking density and excellent in adhesion to a cement base material. The crosslinked acrylic emulsion has the advantages of high crosslinking density, strong adhesion, high film strength, excellent cement coagulation delaying capability and is applicable to both single-component and double-component waterproofing paints.
Description
Technical field
The present invention relates to a kind of building coating, relate in particular to a kind of cross-linking type waterproof coating acrylic emulsion; The preparation method who also relates to this emulsion.
Background technology
Water-proof acrylic acid paint is take polymer emulsions such as acrylate as the basis, the building water-proof paint that adding cement or other fillers, auxiliary agent make.By adjusting the ratio of each component in the emulsion, can satisfy different engine requests.Polymer emulsion is the key of waterproofing quality in water-proof acrylic acid paint, waterproof paint in the market is the simple mixing of polymkeric substance and cement or other fillers, exist can not form cured film, poor to substrate adhesion, with the problem of cement compatibility slow setting ability.
Summary of the invention
It is large that technical problem to be solved by this invention provides a kind of cross-linking density, and strong adhesion is excellent to the cement retardative ability, is applicable to simultaneously the cross-linking type waterproof coating acrylic emulsion of single double-component waterproof coating material.
For solving the problems of the technologies described above, technical scheme of the present invention is, the cross-linking type waterproof coating acrylic emulsion, and each composition accounts for the per-cent of emulsion weight and is in the emulsion:
Butyl acrylate: 35～40%; Vinylbenzene: 10～15%; N-methylolacrylamide: 0.5～1%; Diacetone-acryloamide(DAA): 1.0～1.5%; Emulsifying agent: 1～3%; Persulphate: 0.2～0.5%; Caproic acid two hydrazides: 0.05～0.08%; Defoamer: 0.3%; Water: 40～50%; Neutralizing agent: operating weight is for making ph value of emulsion be adjusted to 6.5～7.5 aequums.
As preferred technical scheme, described neutralizing agent is ammoniacal liquor.
As to further improvement in the technical proposal, described persulphate is ammonium persulphate.
Another technical problem to be solved by this invention provides a kind of preparation method who prepares above-mentioned cross-linking type waterproof coating acrylic emulsion.
For solving the problems of the technologies described above, the preparation method of technical solution of the present invention is:
At first, synthetic polymer is used the Acrylic Acid Monomer synthetic polymer;
Secondly, the cooling neutralization neutralizes synthetic polymkeric substance with described neutralizing agent;
At last, add described caproic acid two hydrazides and stir evenly the filtration discharging.
As to further improvement in the technical proposal, described preparation method's concrete steps are:
A) 17～23% described water and 2～2.5% described emulsifying agents are added the pre-emulsification tanks, start stirring, be sequentially added into after described butyl acrylate, described vinylbenzene, described n-methylolacrylamide, the described diacetone-acryloamide(DAA) pre-emulsification for subsequent use for component one;
B) 17～20.5% described water and 0.2～0.5% described emulsifying agent are added reactor, heat up;
C) be that component two is for subsequent use with 0.75～1. 5% described water and 0.2～0.35% described persulphate stirring and dissolving;
D) it is for subsequent use the described persulphate of 3～5% described water and 0.03～0.1% to be dissolved as component three;
When e) described temperature of reaction kettle rises to 70～75 ℃, add the described component one of 18～22 ㎏ and continue to heat up, temperature adds described component two when rising to 80～85 ℃, insulation reaction 25～35 minutes;
F) after reaction finished, temperature-stable began to drip remaining described component one and described component and dripped in three, 4～4.5 hours between 80～83 ℃;
G) insulation finishes, and is cooled to 60～70 ℃ and carries out rear elimination;
H) be cooled to below 45 ℃, being neutralized to the pH value with described neutralizing agent is 6.5～7.5;
I) add described caproic acid two hydrazides and described defoamer and stir evenly the filtration discharging.
Owing to adopted technique scheme, the cross-linking type waterproof coating acrylic emulsion, the per-cent that each composition accounts for emulsion weight in the emulsion is butyl acrylate: 35～40%; Vinylbenzene: 10～15%; N-methylolacrylamide: 0.5～1%; Diacetone-acryloamide(DAA): 1.0～1.5%; Emulsifying agent: 1～3%; Persulphate: 0.2～0.5%; Caproic acid two hydrazides: 0.05～0.08%; Defoamer: 0.3%; Water: 40～50%; Neutralizing agent: operating weight is for making ph value of emulsion be adjusted to 6.5～7.5 aequums; It is cross-linking monomer that the present invention adopts described n-methylolacrylamide and described diacetone-acryloamide(DAA), described caproic acid two hydrazides are solidifying agent, behind the paint film crosslinking curing, the paint film cross-linking density is large, intensity is high, excellent to cementitious substrate sticking power, metal substrate had certain antirust passivation, utilize the present invention to prepare cement waterproof paint, the slow setting ability is strong after the mixed preparing, after tested, in confined conditions, by a certain percentage with cement mixing after, under 45 ℃ of constant temperatures, deposit and never degenerated in 7 days, can avoid on-the-spot preparation link; The waterproof paint that utilizes the present invention to prepare, can be widely used in the waterproofing works such as exterior wall, tunnel, swimming pool, treatment tank and roofing in the buildings, effect is more superior than prior art, cross-linking density of the present invention is large, strong adhesion, coating strength is large, and is excellent to the cement retardative ability, is applicable to simultaneously single double-component waterproof coating material.
Embodiment
Below in conjunction with embodiment, further set forth the present invention.In the following detailed description, only by the mode of explanation some example embodiment of the present invention has been described.Undoubtedly, those of ordinary skill in the art can recognize, in situation without departing from the spirit and scope of the present invention, can revise described embodiment with various mode.Therefore, being described in is illustrative in essence, rather than is used for the protection domain of restriction claim.
To make one ton of cross-linking type waterproof coating acrylic emulsion as example:
Each composition weight ratio is prepared, described butyl acrylate 35%, described vinylbenzene 15%, described n-methylolacrylamide 1%, described diacetone-acryloamide(DAA) 1.5%, the described emulsifying agent 2.4% of Vinyl Ether sodium sulfonate; Described ammonium persulphate 0.25%, described caproic acid two hydrazides 0.07%, described defoamer 0.3%, described water 44.48%, described ammoniacal liquor is an amount of.
Above starting material are carried out step:
At first, 18.5% described water and 2.15% described emulsifying agent are added the pre-emulsification tank, start stirring, be sequentially added into after 35% described butyl acrylate, 15% described vinylbenzene, 1% described n-methylolacrylamide, 1.5% the described diacetone-acryloamide(DAA) pre-emulsification for subsequent use for component one.
Secondly, 18% described water and 0.25% described emulsifying agent are added reactor, heat up.
Again, be that component two is for subsequent use with 1% described water and 0.2% described ammonium persulphate stirring and dissolving.
Then, it is for subsequent use that 4% described water and 0.05% described ammonium persulphate are dissolved as component three, other raw material for standby.
When described temperature of reaction kettle rises to 75 ℃, add the described component one of 20 ㎏ and continue to heat up.Temperature adds described component two when rising to 80 ℃, insulation reaction 30 minutes.
After reaction finished, temperature-stable began to drip remaining described component one and described component and dripped in three, 4～4.5 hours between 80～83 ℃.
Insulation finishes, and is cooled to 60～70 ℃ and carries out rear elimination.
Be cooled to below 45 ℃, qualified to pH value with described ammonia neutralization.
At last, add described caproic acid two hydrazides of 0.07% solidifying agent and 0.3% described defoamer and stir evenly the filtration discharging.
More than show and described ultimate principle of the present invention, principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; that describes in above-described embodiment and the specification sheets just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (5)
1. the cross-linking type waterproof coating acrylic emulsion is characterized in that, each composition accounts for the per-cent of emulsion weight and is in the emulsion:
Butyl acrylate: 35～40%; Vinylbenzene: 10～15%; N-methylolacrylamide: 0.5～1%; Diacetone-acryloamide(DAA): 1.0～1.5%; Emulsifying agent: 1～3%; Persulphate: 0.2～0.5%; Caproic acid two hydrazides: 0.05～0.08%; Defoamer: 0.3%; Water: 40～50%; Neutralizing agent: operating weight is for making ph value of emulsion be adjusted to 6.5～7.5 aequums.
2. cross-linking type waterproof coating acrylic emulsion as claimed in claim 1 is characterized in that, described neutralizing agent is ammoniacal liquor.
3. cross-linking type waterproof coating acrylic emulsion as claimed in claim 2 is characterized in that, described persulphate is ammonium persulphate.
4. the preparation method of cross-linking type waterproof coating acrylic emulsion as claimed in claim 3 is characterized in that, described preparation method is:
At first, synthetic polymer is used the Acrylic Acid Monomer synthetic polymer;
Secondly, the cooling neutralization neutralizes synthetic polymkeric substance with described neutralizing agent;
At last, add described caproic acid two hydrazides and stir evenly the filtration discharging.
5. the preparation method of cross-linking type waterproof coating acrylic emulsion as claimed in claim 4 is characterized in that, described preparation method's concrete steps are:
A) 17～23% described water and 2～2.5% described emulsifying agents are added the pre-emulsification tanks, start stirring, be sequentially added into after described butyl acrylate, described vinylbenzene, described n-methylolacrylamide, the described diacetone-acryloamide(DAA) pre-emulsification for subsequent use for component one;
B) 17～20.5% described water and 0.2～0.5% described emulsifying agent are added reactor, heat up;
C) be that component two is for subsequent use with 0.75～1. 5% described water and 0.2～0.35% described persulphate stirring and dissolving;
D) it is for subsequent use the described persulphate of 3～5% described water and 0.03～0.1% to be dissolved as component three;
When e) described temperature of reaction kettle rises to 70～75 ℃, add the described component one of 18～22 ㎏ and continue to heat up, temperature adds described component two when rising to 80～85 ℃, insulation reaction 25～35 minutes;
F) after reaction finished, temperature-stable began to drip remaining described component one and described component and dripped in three, 4～4.5 hours between 80～83 ℃;
G) insulation finishes, and is cooled to 60～70 ℃ and carries out rear elimination;
H) be cooled to below 45 ℃, being neutralized to the pH value with described neutralizing agent is 6.5～7.5;
I) add described caproic acid two hydrazides and described defoamer and stir evenly the filtration discharging.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210412736.0A CN102911580B (en) | 2012-10-25 | 2012-10-25 | Crosslinked acrylic emulsion for waterproofing paints and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210412736.0A CN102911580B (en) | 2012-10-25 | 2012-10-25 | Crosslinked acrylic emulsion for waterproofing paints and preparation method thereof |
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| CN102911580A true CN102911580A (en) | 2013-02-06 |
| CN102911580B CN102911580B (en) | 2014-11-05 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016001256A1 (en) | 2014-07-01 | 2016-01-07 | Basf Se | A dispersion of (meth)acrylate copolymer containing a hydroxyalkyl (meth)acrylate functional monomer unit for flexible cementitious waterproofing materials |
| CN105585658A (en) * | 2015-02-04 | 2016-05-18 | 喻冬秀 | Normal-temperature self-crosslinking fluorine-containing acrylate emulsion for woodware and preparation method thereof |
| CN109181594A (en) * | 2018-11-08 | 2019-01-11 | 东莞市彩龙包装材料有限公司 | A kind of liquid glue and preparation method thereof |
| CN109971281A (en) * | 2019-04-15 | 2019-07-05 | 苏州市姑苏新型建材有限公司 | A kind of rapid-curing cutback building water-proof paint |
| WO2023213719A1 (en) | 2022-05-05 | 2023-11-09 | Basf Se | Dispersion of (meth)acrylate copolymer and use thereof as a binder for cementitious materials |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102060954A (en) * | 2010-11-23 | 2011-05-18 | 广州慧谷化学有限公司 | Acrylic emulsion as well as preparation method and application thereof |
| CN102391411A (en) * | 2011-08-29 | 2012-03-28 | 华南理工大学 | Low-temperature self-crosslinking polyacrylate pigment printing binding agent and preparation method thereof |
-
2012
- 2012-10-25 CN CN201210412736.0A patent/CN102911580B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102060954A (en) * | 2010-11-23 | 2011-05-18 | 广州慧谷化学有限公司 | Acrylic emulsion as well as preparation method and application thereof |
| CN102391411A (en) * | 2011-08-29 | 2012-03-28 | 华南理工大学 | Low-temperature self-crosslinking polyacrylate pigment printing binding agent and preparation method thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016001256A1 (en) | 2014-07-01 | 2016-01-07 | Basf Se | A dispersion of (meth)acrylate copolymer containing a hydroxyalkyl (meth)acrylate functional monomer unit for flexible cementitious waterproofing materials |
| CN105585658A (en) * | 2015-02-04 | 2016-05-18 | 喻冬秀 | Normal-temperature self-crosslinking fluorine-containing acrylate emulsion for woodware and preparation method thereof |
| CN109181594A (en) * | 2018-11-08 | 2019-01-11 | 东莞市彩龙包装材料有限公司 | A kind of liquid glue and preparation method thereof |
| CN109971281A (en) * | 2019-04-15 | 2019-07-05 | 苏州市姑苏新型建材有限公司 | A kind of rapid-curing cutback building water-proof paint |
| WO2023213719A1 (en) | 2022-05-05 | 2023-11-09 | Basf Se | Dispersion of (meth)acrylate copolymer and use thereof as a binder for cementitious materials |
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| CN102911580B (en) | 2014-11-05 |
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