CN104448106A - Production technology of core-shell type room-temperature self-crosslinking acrylate emulsion - Google Patents
Production technology of core-shell type room-temperature self-crosslinking acrylate emulsion Download PDFInfo
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- CN104448106A CN104448106A CN201310441115.XA CN201310441115A CN104448106A CN 104448106 A CN104448106 A CN 104448106A CN 201310441115 A CN201310441115 A CN 201310441115A CN 104448106 A CN104448106 A CN 104448106A
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Abstract
The invention discloses a production technology of a core-shell type room-temperature self-crosslinking acrylate emulsion. A room-temperature self-crosslinking monomer is introduced by adopting a seed pre-emulsification semi-continuous core-shell emulsion polymerization process; and the acrylate emulsion which has a hard-core and soft-shell structure, is self-crosslinked at room temperature and can be applied to a wood coating is synthesized. The emulsion with a core-shell structure has the advantages of good after-tack resistance, low film-forming temperature, relatively good film-forming property, stability and mechanical property; hard monomers SM and MMA have relatively high glass transition temperature; a film has relatively high hardness, glossiness, weather fastness, anti-fouling performance, cohesion and structure strength; soft monomers BA and 2EHA play an internal plasticization role in a polymerization system; and the film has certain flexibility and adhesiveness.
Description
Technical field
The invention belongs to acrylic ester emulsion production technique, be specifically related to a kind of hud typed normal-temperature self-crosslinking acrylic ester emulsion production technique.
Background technology
In recent years along with the enhancing of people's environmental consciousness and the in short supply of the energy, the research and development of water-borne wood coating and applying more and more are subject to people's attention.Acrylic ester emulsion is as a large class of water-borne wood coating filmogen, its cost performance is high, stable, synthesis technique is simple, coating is fast light, ageing resistance is good, and meet environmental requirement, therefore acrylic ester emulsion is widely used in woodwork coating field, and the research for acrylic ester emulsion also becomes focus.After traditional ACRYLIC EMULSION film forming, water tolerance, alcohol resistance, hardness, anti-after-tackiness and snappiness are poor, and especially high temperature after tack, low temperature such as to become fragile at the disadvantage.Although improve the high temperature after-tackiness that polymer glass temperature can alleviate film to a certain extent, the problems such as emulsion film forming temperature is high, film fragility is large also can be produced thus.
Summary of the invention
In order to overcome the above-mentioned defect that prior art field exists, the object of the invention is to, provide a kind of hud typed normal-temperature self-crosslinking acrylic ester emulsion production technique, safe ready.
Hud typed normal-temperature self-crosslinking acrylic ester emulsion production technique provided by the invention, add deionized water, emulsifying agent in a reservoir, stirring makes thoroughly to mix, and then slowly adds monomer M MA, SM, BA, MAA, GMA, starts emulsification 1h and obtains pre-emulsification nuclear monomer, in the container that thermometer, whipping appts, reflux exchanger and dropping funnel be housed, add deionized water, emulsifying agent, stir and use heating in water bath, logical nitrogen, when temperature is raised to 75 DEG C, add the pre-emulsification nuclear monomer of 5%, add initial initiator fast and start to be reacted to system temperature falling, obtain core seed emulsion, on the sub-emulsion basis of nuclear species, be warmed up to 80 DEG C, start to drip pre-emulsified residual nucleus monomer and initiator solution, 1.5h drips end, continue insulation 1h, obtain core emulsion, deionized water is added in suitable vessel, emulsifying agent, stirring makes thoroughly to mix, then slowly monomer M MA is added, SM, BA, MAA, GMA, DAAM, start emulsification 1h and obtain pre-emulsification shell monomer, pre-emulsification shell monomer and initiator solution are slowly added drop-wise in core emulsion, keep temperature 80 DEG C constant, control time for adding in 2h, after insulation 2h, be cooled to less than 39 DEG C, drip certain density ammonia soln, the pH value 8 ~ 9 of regulation system, add the ADH aqueous solution of metering, after mixing, 200 mesh filter screens filter discharging, namely hud typed normal-temperature self-crosslinking acrylic ester emulsion is obtained.
Hud typed normal-temperature self-crosslinking acrylic ester emulsion production technique provided by the invention, its beneficial effect is, the hud typed normal-temperature self-crosslinking acrylic ester emulsion of producing in this way, its anti-after-tackiness of the emulsion of nucleocapsid structure is good, film-forming temperature is low, film-forming properties, stability and mechanical property are better, and hard monomer SM, MMA have higher second-order transition temperature, give film higher hardness, gloss, weathering resistance, antipollution and higher force of cohesion and structural strength; Soft monomer BA, 2EHA play internally plasticized effect in polymerization system, give the certain snappiness of film and tack.
Embodiment
Below in conjunction with an embodiment, hud typed normal-temperature self-crosslinking acrylic ester emulsion production technique provided by the invention is described in detail.
Embodiment
Add deionized water, emulsifying agent in a reservoir, stir and make thoroughly to mix, then slowly add monomer M MA, SM, BA, MAA, GMA, start emulsification 1h and obtain pre-emulsification nuclear monomer, in the container that thermometer, whipping appts, reflux exchanger and dropping funnel be housed, add deionized water, emulsifying agent, stir and use heating in water bath, logical nitrogen, when temperature is raised to 75 DEG C, add the pre-emulsification nuclear monomer of 5%, add initial initiator fast and start to be reacted to system temperature falling, obtain core seed emulsion, on the sub-emulsion basis of nuclear species, be warmed up to 80 DEG C, start to drip pre-emulsified residual nucleus monomer and initiator solution, 1.5h drips end, continue insulation 1h, obtain core emulsion, deionized water is added in suitable vessel, emulsifying agent, stirring makes thoroughly to mix, then slowly monomer M MA is added, SM, BA, MAA, GMA, DAAM, start emulsification 1h and obtain pre-emulsification shell monomer, pre-emulsification shell monomer and initiator solution are slowly added drop-wise in core emulsion, keep temperature 80 DEG C constant, control time for adding in 2h, after insulation 2h, be cooled to less than 39 DEG C, drip certain density ammonia soln, the pH value 8 ~ 9 of regulation system, add the ADH aqueous solution of metering, after mixing, 200 mesh filter screens filter discharging, namely hud typed normal-temperature self-crosslinking acrylic ester emulsion is obtained.
Claims (1)
1. a hud typed normal-temperature self-crosslinking acrylic ester emulsion production technique, it is characterized in that: add deionized water, emulsifying agent in a reservoir, stirring makes thoroughly to mix, and then slowly adds monomer M MA, SM, BA, MAA, GMA, starts emulsification 1h and obtains pre-emulsification nuclear monomer, in the container that thermometer, whipping appts, reflux exchanger and dropping funnel be housed, add deionized water, emulsifying agent, stir and use heating in water bath, logical nitrogen, when temperature is raised to 75 DEG C, add the pre-emulsification nuclear monomer of 5%, add initial initiator fast and start to be reacted to system temperature falling, obtain core seed emulsion, on the sub-emulsion basis of nuclear species, be warmed up to 80 DEG C, start to drip pre-emulsified residual nucleus monomer and initiator solution, 1.5h drips end, continue insulation 1h, obtain core emulsion, deionized water is added in suitable vessel, emulsifying agent, stirring makes thoroughly to mix, then slowly monomer M MA is added, SM, BA, MAA, GMA, DAAM, start emulsification 1h and obtain pre-emulsification shell monomer, pre-emulsification shell monomer and initiator solution are slowly added drop-wise in core emulsion, keep temperature 80 DEG C constant, control time for adding in 2h, after insulation 2h, be cooled to less than 39 DEG C, drip certain density ammonia soln, the pH value 8 ~ 9 of regulation system, add the ADH aqueous solution of metering, after mixing, 200 mesh filter screens filter discharging, namely hud typed normal-temperature self-crosslinking acrylic ester emulsion is obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310441115.XA CN104448106A (en) | 2013-09-25 | 2013-09-25 | Production technology of core-shell type room-temperature self-crosslinking acrylate emulsion |
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| CN201310441115.XA CN104448106A (en) | 2013-09-25 | 2013-09-25 | Production technology of core-shell type room-temperature self-crosslinking acrylate emulsion |
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| CN104448106A true CN104448106A (en) | 2015-03-25 |
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| CN201310441115.XA Pending CN104448106A (en) | 2013-09-25 | 2013-09-25 | Production technology of core-shell type room-temperature self-crosslinking acrylate emulsion |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105237675A (en) * | 2015-10-15 | 2016-01-13 | 三棵树涂料股份有限公司 | Polyacrylic woodware emulsion with core-shell bi-crosslinking structure and preparation method thereof |
| CN109651551A (en) * | 2018-12-25 | 2019-04-19 | 成都巴德富科技有限公司 | A kind of dope for inner wall of architecture acrylic acid ester emulsion and preparation method thereof and coating |
| CN111534182A (en) * | 2020-05-09 | 2020-08-14 | 洋紫荆油墨（浙江）有限公司 | Water-based varnish and preparation method thereof |
-
2013
- 2013-09-25 CN CN201310441115.XA patent/CN104448106A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105237675A (en) * | 2015-10-15 | 2016-01-13 | 三棵树涂料股份有限公司 | Polyacrylic woodware emulsion with core-shell bi-crosslinking structure and preparation method thereof |
| CN109651551A (en) * | 2018-12-25 | 2019-04-19 | 成都巴德富科技有限公司 | A kind of dope for inner wall of architecture acrylic acid ester emulsion and preparation method thereof and coating |
| CN109651551B (en) * | 2018-12-25 | 2021-06-25 | 成都巴德富科技有限公司 | Acrylate emulsion for building interior wall coating, preparation method thereof and coating |
| CN111534182A (en) * | 2020-05-09 | 2020-08-14 | 洋紫荆油墨（浙江）有限公司 | Water-based varnish and preparation method thereof |
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Application publication date: 20150325 |
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