CN102838823A - Waterborne EVA (ethylene-vinyl acetate) treating agent and preparation method thereof - Google Patents
Waterborne EVA (ethylene-vinyl acetate) treating agent and preparation method thereof Download PDFInfo
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- CN102838823A CN102838823A CN2012103680703A CN201210368070A CN102838823A CN 102838823 A CN102838823 A CN 102838823A CN 2012103680703 A CN2012103680703 A CN 2012103680703A CN 201210368070 A CN201210368070 A CN 201210368070A CN 102838823 A CN102838823 A CN 102838823A
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Abstract
The invention discloses a waterborne EVA (ethylene-vinyl acetate) treating agent and a preparation method thereof, wherein the treating agent is characterized by taking emulsion acrylate copolymer as main base material, and mixture of de-ionized water and micro cluster water as main dispersion medium. When the treating agent is used, pollution hardly exists; the emulsion stability is high; the product has better freezing resistance and can treat EVA soft polymer material with high hardness.
Description
Technical field
The present invention relates to the foam material technical field, especially relate to a kind of EVA treatment agent and preparation method thereof.
Background technology
Along with developing rapidly of furniture, footwear clothes industry, EVA (ethylene-vinyl acetate copolymer) foam material is used for fields such as the end and the sandy beach slippers of Upholstered sofa, sneakers in a large number.But, and have between strong polar neoprene adhesive and the polyurethane adhesive not avidity preferably, the bonding difficulty of bringing of giving EVA because EVA is the low-pole material in the superpolymer.The method that generally adopts TEB 3K (MMA), vinylformic acid monomer graft modification SBS such as (AA) to synthesize the EVA surface treatment agent at present in the industry solves the adhesion problem of EVA material; Obtained comparatively satisfied effect; But toluene equal solvent wherein; In use because volatile and contaminate environment also has certain influence to health of operators, even can cause fire.Traditional emulsion acrylate multipolymer is a dispersion medium with water, and is almost pollution-free during use, but there is defective in it on the low temperature use properties, and the effect of processing high firmness EVA is not good enough.
Summary of the invention
Almost pollution-free when the object of the invention is exactly a kind of use that provides for the deficiency that solves prior art, this product frost resistance is good simultaneously, can handle the water-based EVA treatment agent of higher hardness.
Another object of the present invention provides a kind of preparation method of water-based EVA treatment agent.
The present invention adopts following technical solution to realize above-mentioned purpose: a kind of water-based EVA treatment agent, it is characterized in that it is to be main base-material with the emulsion acrylate multipolymer, and be main dispersing medium with the mixtinite of deionized water and small-micelle water.
As further specifying of such scheme, said small-micelle water is by 5-8 the molecular running water of moisture, and different with water in general sense, common water is formed a water clusters by the water molecules more than 10, is commonly called as macromolecular mass water.
A kind of preparation method of water-based EVA treatment agent is characterized in that it comprises the steps:
A, seed preparation;
In there-necked flask, add the self-control macromolecule emulsifier of amount of monomer 4-6% and an amount of, the NaHCO of mixture, antifreezing agent of small-molecular emulsifier earlier
3Buffer reagent is an amount of, aqueous sodium hypochlorite solution 4-6%, NaOH is an amount of and the mixing water of 65-75% after; Oil bath is warming up to 75-85 ℃, adds the initiator (NH of partial monosomy (comprise vinylformic acid, Bing Xisuandingzhi, vinyl cyanide, Rocryl 400, SY-Monomer G one or more) and amount of monomer 0.3-1.2%
4)
2S
2O
8, after reaction for some time, system begins to change, and is transited into white by blueness gradually, and with backflow, wait backflow to stop basically after, seed is made;
B, emulsion are synthesized;
After treating that seed is made, temperature continues to be controlled at 75～85 ℃, drips residual monomers and (NH simultaneously
4)
2S
2O
8, dripped time 1-1.5 hour;
C, insulation back discharging;
Monomer and (NH
4)
2S
2O
8After dropwising, be warming up to 85～90 ℃, insulation, the speed of backflow is extremely slow by soon, after stop, being cooled to 40 ℃, discharging;
The adjusting of d, pH value;
Take by weighing a certain amount of solid NaOH, be mixed with dilute solution, and in the emulsion processed of slow a spot of adding; And test with accurate pH test paper (5.5-9.0); As can not reach slight alkalinity, and add little amount of N aOH solution again, regulate the pH value; Continue to stir discharging after 5-10 minute, make the EVA surface treatment agent.
Further, in the entire reaction course, the stirring velocity of emulsion should be controlled at 150～30Or/min, and the pH value maintains between 7～9 all the time.
Said self-control macromolecule emulsifier comprises among self-control macromolecule emulsifier core masterbatch, Emulsifier O-10, O-20, O-30, OP-10, TX-10 (polyoxyethylene nonylphenol), the K-12 the composite of one or more.
Said self-control antifreezing agent comprises in terepthaloyl moietie, methyl alcohol, ethanol, Pyranton, Virahol, glycerine, calcium chloride brine, the water-soluble amide the composite of one or more, and the addition of antifreezing agent is many more, and the winter hardiness of treatment agent is good more.
The beneficial effect that the present invention adopts above-mentioned technical solution to reach is:
1, treatment agent of the present invention is to be main base-material with the emulsion acrylate multipolymer; Mixtinite with deionized water and small-micelle water is a main dispersing medium; Almost pollution-free during use; Stability of emulsion is high, and this product frost resistance is good simultaneously, can handle the EVA software polymer materials of higher hardness.
2, the present invention is because of having used small-micelle water and PH buffer reagent in emulsification system, and emulsion system still can keep stable after introducing aqueous sodium hypochlorite solution, makes finished product when handling the higher EVA material of hardness, also can obtain gratifying pre-treatment effect.
Embodiment
A kind of water-based EVA treatment agent of the present invention, it is to be main base-material with the emulsion acrylate multipolymer, is main dispersing medium with the mixtinite of deionized water and small-micelle water.
Below in conjunction with embodiment the present invention is done further detailed description.
In the acrylic ester emulsion system of deionized water: small-micelle water=2:1; Through inserting the self-control macromolecule emulsifier of Youxiaolin, cooperation monomer total amount 4%-6%; And add the self-control antifreezing agent of an amount of (mixing water ratio 10%) according to user's demand; Obtained solid content and be 30% high firmness EVA footwear material treatment agent; This emulsion treatment agent has winter hardiness and low temperature application performance preferably, and sample is through on probation after depositing 1 month under-15 ℃ the coldcondition and under 0 ℃ simulated environment, and treatment effect can satisfy customer requirements.The viscosity of emulsion treatment agent can be controlled in 40-60cps/25 ℃, and this moment, the smell of system was less, and brushing property and treatment effect are all better, and use polyurethane binder is bonding behind the EVA material of processing hardness 55, and stripping strength can reach 4.3 KN/m.
Wherein, the preparation process of self-control macromolecule emulsifier core masterbatch:
Get an amount of monomer (vinylbenzene+TEB 3K+Bing Xisuandingzhi+Hydroxyethyl acrylate) and Diisopropyl azodicarboxylate and place 200ml three young flasks; At 80-85 ℃; Nitrogen protection was reacted 40-50 minute down, was cooled to 40～50 ℃ of sustained reactions after 1 hour, added monomer total amount 20% small-micelle water and the mixture of deionized water, the sulfonic acid of 7-8%; Insulation is 8-10 hour under 80-85 ℃ temperature, makes macromolecule emulsifier core masterbatch.
The addition of antifreezing agent:
In north China; Winter temperature might be low to moderate subzero 20 ℃, according to various places user's actual demand, under EVA treatment agent system of the present invention, introduces an amount of antifreezing agent; Can realize low-temp storage and not conglomeration, caking, can directly use when the user needs.The addition of antifreezing agent is many more, and the freeze-thaw-stability of finished product is good more, but cost is also high more.
Above-described only is preferred implementation of the present invention, should be pointed out that for the person of ordinary skill of the art, under the prerequisite that does not break away from the invention design, can also make some distortion and improvement, and these all belong to protection scope of the present invention.
Claims (7)
1. a water-based EVA treatment agent is characterized in that, it is to be main base-material with the emulsion acrylate multipolymer, is main dispersing medium with the mixtinite of deionized water and small-micelle water.
2. a kind of water-based EVA treatment agent according to claim 1 is characterized in that, said small-micelle water is by 5-8 the molecular running water of moisture.
3. the preparation method of a water-based EVA treatment agent is characterized in that it comprises the steps:
A, seed preparation;
In there-necked flask, add the self-control macromolecule emulsifier of amount of monomer 4-6% and an amount of, the NaHCO of mixture, antifreezing agent of small-molecular emulsifier earlier
3Buffer reagent is an amount of, aqueous sodium hypochlorite solution 4-6%, NaOH is an amount of and the mixing water of 65-75% after, oil bath is warming up to 75-85 ℃, adds the initiator (NH of partial monosomy and amount of monomer 0.3-1.2%
4)
2S
2O
8, after reaction for some time, system begins to change, and is transited into white by blueness gradually, and with backflow, wait backflow to stop basically after, seed is made;
B, emulsion are synthesized;
After treating that seed is made, temperature continues to be controlled at 75～85 ℃, drips residual monomers and amount of monomer 0.3-1.2% initiator (NH simultaneously
4)
2S
2O
8, dripped time 1-1.5 hour;
C, insulation back discharging;
Monomer is warming up to 85-90 ℃ with after (NH4) 2S2O8 dropwises, insulation, the speed of backflow by fast to slow, after stop, being cooled to 40 ℃, discharging;
The adjusting of d, pH value;
Take by weighing a certain amount of solid NaOH, be mixed with dilute solution, and in the emulsion processed of slow a spot of adding; And, add little amount of N aOH solution with accurate pH test paper (5.5-9.0) test, regulate the pH value; Continue to stir discharging after 5-10 minute, make the EVA surface treatment agent.
4. the preparation method of a kind of water-based EVA treatment agent according to claim 3 is characterized in that, in the entire reaction course, the stirring velocity of emulsion should be controlled at 150～30Or/min, and the pH value maintains between 7～9 all the time.
5. the preparation method of a kind of water-based EVA treatment agent according to claim 3 is characterized in that, said monomer comprises one or more of vinylformic acid, Bing Xisuandingzhi, vinyl cyanide, Rocryl 400, SY-Monomer G.
6. the preparation method of a kind of water-based EVA treatment agent according to claim 3; It is characterized in that the mixture of said self-control macromolecule emulsifier and small-molecular emulsifier comprises among self-control macromolecule emulsifier core masterbatch, Emulsifier O-10, O-20, O-30, OP-10, TX-10, the K-12 the composite of one or more.
7. the preparation method of a kind of water-based EVA treatment agent according to claim 3; It is characterized in that said self-control antifreezing agent comprises in terepthaloyl moietie, methyl alcohol, ethanol, Pyranton, Virahol, glycerine, calcium chloride brine, the water-soluble amide the composite of one or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210368070.3A CN102838823B (en) | 2012-09-28 | 2012-09-28 | Waterborne EVA (ethylene-vinyl acetate) treating agent and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210368070.3A CN102838823B (en) | 2012-09-28 | 2012-09-28 | Waterborne EVA (ethylene-vinyl acetate) treating agent and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102838823A true CN102838823A (en) | 2012-12-26 |
| CN102838823B CN102838823B (en) | 2015-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210368070.3A Expired - Fee Related CN102838823B (en) | 2012-09-28 | 2012-09-28 | Waterborne EVA (ethylene-vinyl acetate) treating agent and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106009990A (en) * | 2016-06-12 | 2016-10-12 | 深圳市莱莉雅环保科技有限公司 | Micromolecular anionic waterborne glaze and preparation method thereof |
| CN109111809A (en) * | 2018-07-26 | 2019-01-01 | 深圳市莱莉雅环保科技有限公司 | The single-component water-based plastic cement aluminium paint of scintilla, preparation process and spraying method |
| CN111138774A (en) * | 2020-01-10 | 2020-05-12 | 广东东方一哥新材料股份有限公司 | Treating agent capable of preventing EVA from leaving marks after soaking and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101880512A (en) * | 2010-07-14 | 2010-11-10 | 浙江德尚化工科技有限公司 | Aqueous binding agent and preparation method thereof |
-
2012
- 2012-09-28 CN CN201210368070.3A patent/CN102838823B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101880512A (en) * | 2010-07-14 | 2010-11-10 | 浙江德尚化工科技有限公司 | Aqueous binding agent and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 郑李华: "耐寒高硬度EVA处理剂的研制", 《化学与黏合》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106009990A (en) * | 2016-06-12 | 2016-10-12 | 深圳市莱莉雅环保科技有限公司 | Micromolecular anionic waterborne glaze and preparation method thereof |
| CN109111809A (en) * | 2018-07-26 | 2019-01-01 | 深圳市莱莉雅环保科技有限公司 | The single-component water-based plastic cement aluminium paint of scintilla, preparation process and spraying method |
| CN111138774A (en) * | 2020-01-10 | 2020-05-12 | 广东东方一哥新材料股份有限公司 | Treating agent capable of preventing EVA from leaving marks after soaking and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102838823B (en) | 2015-02-18 |
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Effective date of registration: 20170929 Address after: 528139 Guangdong province Foshan Sanshui Lubao Town Industrial Development Zone (duozheng chemical adhesive resin Research Institute) Patentee after: GUANGDONG GOOD RESIN TECHNOLOGY CO.,LTD. Address before: 528139 Guangdong province Foshan Sanshui Lubao Town Industrial Development Zone Patentee before: GOOD CHEMICAL SCIENCE & TECHNOLOGY Co.,Ltd. |
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