CN1315938C - Terpolymerized redispersable emulsion powder and its producing method - Google Patents
Terpolymerized redispersable emulsion powder and its producing method Download PDFInfo
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- CN1315938C CN1315938C CNB2004100701370A CN200410070137A CN1315938C CN 1315938 C CN1315938 C CN 1315938C CN B2004100701370 A CNB2004100701370 A CN B2004100701370A CN 200410070137 A CN200410070137 A CN 200410070137A CN 1315938 C CN1315938 C CN 1315938C
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Abstract
The present invention relates to ternary polymerization re-dispersible latex powder and a manufacturing method thereof. For solving the defect that the existing latex powder has poor water resistance, the raw materials of the ternary polymerization re-dispersible latex powder of the present invention comprises the following materials by weight percentage: 20% to 50% of polyvinyl acetate-ethene emulsion, 10% to 30% of acrylic acid emulsion, 0.5% to 3% of a polymerization accelerator, 1% to 5% of cellulose ether, 5% to 20% of polyvinyl alcohol, 2% to 15% of calcite powder and 0.1% to 3% of a defoamer. The present invention simultaneously discloses the manufacturing method for the ternary polymerization re-dispersible latex powder. The ternary polymerization re-dispersible latex powder can be mixed with a plurality of inorganic materials, such as cement, hemihydrate gypsum, etc. to be used and to be made into dry-mixed materials, such as polymer thermal insulation mortar, polymer gypsum, self-leveling mortar, elastic putty, a ceramic tile binder, etc., with special properties and uses. The marked dry-mixed materials have the characteristics of environmental protection, strong binding power, good water resistance, high flexibility, ageing resistance, etc.
Description
[technical field]
The present invention relates to a kind of latex powder and manufacture method thereof of terpolymer, relate in particular to and a kind ofly can in water, dissolve rapidly, disperse, and its aqueous solution has the terpolymer latex powder and the manufacture method thereof of former latex characteristic.
[background technology]
Since modern, cement material be scale operation and application worldwide.Its hydrated product has very high ultimate compression strength and folding strength, is a kind of good hydraulic material, excellent in durability, and cheap.But it also exists unit elongation low, easy shrinkage cracking, many disadvantages such as anti-permeability performance difference.
For impermeability, freeze-thaw resistance and the minimizing cracking phenomena that improves cement material, since the 1950's some polymer emulsions come out one after another.Scientists is mixed polymer emulsion in the cement material, thereby has improved the performance of cement material, has improved cohesive strength, ageing-resistant performance, impermeability and the freeze-thaw resistance of cement material, and makes cement material have certain snappiness.But this method of directly admixing with polymer emulsion and cement has many defectives, as: can't form suitability for industrialized production, be unfavorable for storing and long-distance transportation, this also is restricted with regard to the application that has determined this polymer water mud material, with and the unstable of quality.
For this reason, the sixties in 20th century, Germany is that former trembling produced redispersable latex powder with Vinyl Acetate Copolymer-vac emulsion at first, but owing to raw material itself, has determined the characteristics of this kind redispersable latex powder water resistance difference.
[summary of the invention]
For this reason, the technical problem to be solved in the present invention provides a kind of redispersable latex powder and manufacture method thereof of terpolymer, solves the deficiency of existing latex powder poor water resistance.
For solving the problems of the technologies described above, the invention provides a kind of redispersable latex powder of terpolymer.Its starting material comprise the material of following weight percent: Vinyl Acetate Copolymer-vac emulsion 20～50%, ACRYLIC EMULSION 10～30%, polymerization promotor 0.5～3%, ether of cellulose 1～5%, polyvinyl alcohol 5～20%, calcite in powder 2～15% and defoamer 0.1～3%.
The present invention also provides a kind of manufacture method of redispersable latex powder of terpolymer.The starting material of this method comprise the material of following weight percent: Vinyl Acetate Copolymer-vac emulsion 20～50%, ACRYLIC EMULSION 10～30%, polymerization promotor 0.5～3%, ether of cellulose 1～5%, polyvinyl alcohol 5～20%, calcite in powder 2～15% and defoamer 0.1～3%.This method comprises the steps:
(1) Vinyl Acetate Copolymer-vac emulsion and ACRYLIC EMULSION joined in the reactor stir, add polymerization promotor, defoamer, ether of cellulose, polyvinyl alcohol, calcite in powder and water simultaneously, the temperature reaction preset time, an intermediate section prose style free from parallelism;
(2) middle dispersion is carried out atomization drying, and cooling obtains this redispersable latex powder.
Wherein, the reaction in the above-mentioned steps (1) is to react at least 3 hours more than 100 ℃ in temperature, preferably 120 ± 5 ℃ of reactions of temperature 4 ± 0.25 hours.Above-mentioned polymerization promotor, defoamer, ether of cellulose, polyvinyl alcohol, calcite in powder and water are preferably successively and join in the reactor in the above-mentioned steps (1).The atomization drying temperature is 240 ± 10 ℃ in the above-mentioned steps (2).This method also can comprise step (3): step (2) gained rubber powder is further used 80 mesh sieve vibrosieves.
The redispersable latex powder of terpolymer of the present invention compared with prior art can dissolve, be dispersed into the homogeneous latex emulsion state rapidly in water, this emulsion has the water-tolerant and the high characteristics of elasticity of former latex.And its water tolerance is to lean on the performance of emulsion self to provide, and in the prior art by adding hydrophobic substance (as organosilicon, calcium stearate etc.) reach water-fast effect, but this that finished product is taken place is rotten by adding method that hydrophobic substance reaches water-fast effect, makes the cohesive force of finished product poor.The redispersable latex powder of this terpolymer can mix use with multiple inorganic materials such as cement, semi-hydrated gypsums, make the dried material that mixes with property and purposes, as: polymer thermal insulating mortar, polymkeric substance gypsum, gravity flowing levelling mortar, bouncing putty, ceramic tile bond etc.Characteristics such as made dry powder material has environmental protection, cohesive force is strong, water resistance good, snappiness is high and ageing-resistant.
[embodiment]
Further specify the present invention below in conjunction with a specific embodiment:
In the present embodiment, the raw material of the redispersable latex powder of this terpolymer comprises: Vinyl Acetate Copolymer-vac emulsion 45Kg, ACRYLIC EMULSION 25Kg, ammonium persulphate 2.5Kg, ether of cellulose 4Kg, polyvinyl alcohol 10Kg, calcite in powder 10Kg and tributyl phosphate 2.5Kg.
At first, Vinyl Acetate Copolymer-vac emulsion and two kinds of polymer emulsions of ACRYLIC EMULSION are joined in the reactor stir.In whipping process, add polymerization promotor, defoamer, ether of cellulose, polyvinyl alcohol, calcite in powder and an amount of water successively, be warming up to 120 ± 2 ℃, and under this temperature, reacted 4 hours, promptly get an intermediate section prose style free from parallelism.
Should be noted that, disclosed this polymerization promotor of present embodiment and defoamer, i.e. (ammonium persulphate and tributyl phosphate), only be to be used to illustrate the present invention, in other polymerization promotors that those of ordinary skills understood and defoamer and all should containing of being applicable to that the present invention conceives and the appended claim of the application.
Then, start hotblast stove, make atomizing dryer remain on 240 ± 10 ℃ hot blast temperature, middle dispersion is carried out atomization drying, obtain rubber powder.
At last, rubber powder is cooled to room temperature after, with 80 purposes sieve, behind vibrosieve, test, pack and get final product.
Need to prove; above-mentioned explanation only is the detailed description to preferred embodiment of the present invention; narration only is explanation realizability of the present invention and outstanding effect thereof; concrete feature can not be used as the restriction to technical scheme of the present invention, and protection scope of the present invention should be as the criterion with appended claims of the present invention.
Claims (6)
1. the redispersable latex powder of a terpolymer, it is characterized in that its starting material comprise the material of following weight percent: Vinyl Acetate Copolymer-vac emulsion 20～50%, ACRYLIC EMULSION 10～30%, polymerization promotor 0.5～3%, ether of cellulose 1～5%, polyvinyl alcohol 5～20%, calcite in powder 2～15% and defoamer 0.1～3%.
2. the manufacture method of the redispersable latex powder of a kind of terpolymer as claimed in claim 1, this method comprises the steps:
(1) Vinyl Acetate Copolymer-vac emulsion and ACRYLIC EMULSION are joined in the reactor stirs, the water that adds polymerization promotor, defoamer, ether of cellulose, polyvinyl alcohol, calcite in powder and predetermined amount simultaneously, react time of at least 3 hours more than 100 ℃ in temperature, with an intermediate section prose style free from parallelism;
(2) middle dispersion is carried out atomization drying, and cooling obtains this redispersable latex powder.
3. manufacture method as claimed in claim 2 is characterized in that the reaction in the above-mentioned steps (1) is 120 ± 5 ℃ of reactions of temperature 4 ± 0.25 hours.
4. as the described manufacture method of one of claim 2 to 3, it is characterized in that above-mentioned polymerization promotor, defoamer, ether of cellulose, polyvinyl alcohol, calcite in powder and water are for joining in the reactor successively in the above-mentioned steps (1).
5. manufacture method as claimed in claim 2 is characterized in that the atomization drying temperature is 240 ± 10 ℃ in the above-mentioned steps (2).
6. manufacture method as claimed in claim 2 is characterized in that this method also comprises step (3): step (2) gained rubber powder is further used 80 mesh sieve vibrosieves.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100701370A CN1315938C (en) | 2004-08-03 | 2004-08-03 | Terpolymerized redispersable emulsion powder and its producing method |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2004100701370A CN1315938C (en) | 2004-08-03 | 2004-08-03 | Terpolymerized redispersable emulsion powder and its producing method |
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| CN1587313A CN1587313A (en) | 2005-03-02 |
| CN1315938C true CN1315938C (en) | 2007-05-16 |
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| CNB2004100701370A Expired - Fee Related CN1315938C (en) | 2004-08-03 | 2004-08-03 | Terpolymerized redispersable emulsion powder and its producing method |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102107333B (en) * | 2009-12-23 | 2013-09-25 | 沈阳黎明航空发动机(集团)有限责任公司 | Anti-splash process method for cutting special material |
| CN101817654B (en) * | 2010-03-31 | 2012-04-11 | 上海东升新材料有限公司 | Self-leveling mortar anti-shrinking agent and preparation method and application thereof |
| JP5403764B2 (en) * | 2010-05-17 | 2014-01-29 | ダウ グローバル テクノロジーズ エルエルシー | Cellulose ether composition for dry mortar formulations |
| US9505658B2 (en) * | 2011-12-09 | 2016-11-29 | Dow Global Technologies Llc | Method for providing modified cement compositions, dry mortars and cement-free mixtures |
| CN103466994B (en) * | 2013-09-22 | 2015-10-28 | 常州工程职业技术学院 | Self-leveling bedding mortar and abrasion-resistant ground mortar additive and preparation method |
| CN110627403A (en) * | 2019-09-03 | 2019-12-31 | 北京金地海天科技有限公司 | Anti-cracking plasticizer and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1183445A (en) * | 1997-12-25 | 1998-06-03 | 赵小鲁 | Water expansion fire-proof adhesive |
| CN1211599A (en) * | 1997-09-12 | 1999-03-24 | 张明基 | Multi-polymerized multi-functional latex paint series |
| KR20020085255A (en) * | 2001-05-07 | 2002-11-16 | (주)동훈디지엠 | Coating composition for ink-jet media film having water resistant and absorption at the same time and ink-jet media film using it |
| CN1458183A (en) * | 2003-05-27 | 2003-11-26 | 韩金顺 | Quick soluble dispersive emulsoid powder and its producing method |
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- 2004-08-03 CN CNB2004100701370A patent/CN1315938C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1211599A (en) * | 1997-09-12 | 1999-03-24 | 张明基 | Multi-polymerized multi-functional latex paint series |
| CN1183445A (en) * | 1997-12-25 | 1998-06-03 | 赵小鲁 | Water expansion fire-proof adhesive |
| KR20020085255A (en) * | 2001-05-07 | 2002-11-16 | (주)동훈디지엠 | Coating composition for ink-jet media film having water resistant and absorption at the same time and ink-jet media film using it |
| CN1458183A (en) * | 2003-05-27 | 2003-11-26 | 韩金顺 | Quick soluble dispersive emulsoid powder and its producing method |
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