CN103524971B - Dispersibility latex powder and preparation method thereof - Google Patents
Dispersibility latex powder and preparation method thereof Download PDFInfo
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- CN103524971B CN103524971B CN201310471685.3A CN201310471685A CN103524971B CN 103524971 B CN103524971 B CN 103524971B CN 201310471685 A CN201310471685 A CN 201310471685A CN 103524971 B CN103524971 B CN 103524971B
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Abstract
The invention discloses a kind of dispersibility latex powder and preparation method thereof, wherein latex powder forms by following raw material is mixed, 707 vinylformic acid blending emulsions, glue, 707 vinylformic acid blending emulsions, coarse whiting, defoamer, water, sodium bicarbonate, wherein 707 vinylformic acid blending emulsions are mixed by high strength structure glue, vinyl acetate, polyvinyl alcohol, ethyl propenoate, kaolin, Octyl acrylate, defoamer, butyl acrylate, emulsifying agent, butyl phthalyl, sodium lauryl sulphate, water, ammonium persulphate, sodium-acetate, sodium bicarbonate; Glue is mixed by water and high strength structure glue.Dispersibility latex powder in the present invention in use there will not be bonding, merges and caking, has excellent mobility, can guarantee to be used as performance specific to the material of construction such as concrete, sand-cement slurry simultaneously.
Description
Technical field
The present invention relates to a kind of material of construction, more particularly, relate to the redispersible latex powder that a kind of building trade uses.
Background technology
Redispersible latex powder, cry again redispersible toner, redispersible polymer powder, can reemulsification latex powder etc., refer to the water-based emulsion containing polymeric constituent or the polymer-based powder that technique dehydration efflorescence process obtains such as solution is spray-dried, can again be dispersed in water after adding water, generate stable aqueous phase redispersion liquid, and have and original copolymer emulsion or the suitable performance of solution.
Redispersable latex powder is mainly used as the additive of the material of construction such as concrete, sand-cement slurry, and can use together with the inorganic bond material such as cement, can significantly improve the folding strength of material, the main film forming adhesive that also can be used as in powder coating uses.Especially hydraulic cement macromolecule modified in, use redispersable latex powder to replace the trend of emulsion additive to rise obviously.In concrete substrates thing, add macromolecule resin can bring some technical improvement, such as: better processibility, higher stretching and flexural strength, abrasion resistance and the good adhesion to different substrate materials.Compared with conventional emulsions, redispersable latex powder has an outstanding advantages: it can with cement, aggregate and other fill a prescription and be dry mixed, make the single-component product being easy to apply at the construction field (site), the accurate of slurry composition proportioning can be ensured on the one hand, evade the error that in construction, artificial batching produces, on the other hand dried powder product compares package of liquid products and transportation cost is low, little to environmental influence, without the need to mildew-resistant and antifreeze.
Redispersible latex powder is owing to there being above-mentioned many performances, and be widely used, but current redispersable latex powder on the market also has and easily irreversible bonding, fusion and caking occurs, line clogging aborning, waste material produces many especially, and in the problem such as a large amount of adhesions of spray-dryer wall surface, cause added cost and the problem that can not normally produce, the latex powder powder of the redispersible with excellent mobility cannot be obtained.
Summary of the invention
The object of the present invention is to provide a kind of redispersable latex powder having efficiency to solve the problem and preparation method thereof, can effectively solve above-mentioned Problems existing.
All raw material in the present invention is weight part, dispersibility latex powder in the present invention, form by following raw material is mixed, emulsion, glue, 707 vinylformic acid blending emulsions, coarse whiting, defoamer, water, sodium bicarbonate, wherein emulsion is mixed by high strength structure glue, vinyl acetate, polyvinyl alcohol, ethyl propenoate, kaolin, Octyl acrylate, defoamer, butyl acrylate, emulsifying agent, butyl phthalyl, sodium lauryl sulphate, water, ammonium persulphate, sodium-acetate, sodium bicarbonate; Glue is mixed by water and high strength structure glue.
Preferred: described emulsion is 1600-1800 part, glue 580-700 part, 707 vinylformic acid blending emulsion 750-850 parts, coarse whiting 80-150 part, defoamer 6 parts, water 180-250 part, 2 parts, sodium bicarbonate.
Preferred: described emulsion is 1700 parts, 600 parts, glue, 707 vinylformic acid blending emulsion 800 parts, coarse whiting 100 parts, defoamer 6 parts, 200 parts, water, 2 parts, sodium bicarbonate.
Preferred: described emulsion is mixed by 60 parts, high strength structure glue, vinyl acetate 1100-1200 part, polyvinyl alcohol 30 parts, ethyl propenoate 80 parts, kaolin 35 parts, Octyl acrylate 50 parts, defoamer 3 parts, butyl acrylate 150 parts, emulsifying agent 20 parts, butyl phthalyl 120 parts, sodium lauryl sulphate 3 parts, water 1400-1600 part, ammonium persulphate 6 parts, sodium-acetate 15 parts, 2 parts, sodium bicarbonate.
Preferred: described emulsion is mixed by 60 parts, high strength structure glue, vinyl acetate 1150 parts, polyvinyl alcohol 30 parts, ethyl propenoate 80 parts, kaolin 35 parts, Octyl acrylate 50 parts, defoamer 3 parts, butyl acrylate 150 parts, emulsifying agent 20 parts, butyl phthalyl 120 parts, sodium lauryl sulphate 3 parts, 1500 parts, water, ammonium persulphate 6 parts, sodium-acetate 15 parts, 2 parts, sodium bicarbonate.
Preferred: described glue by weight part be high strength structure glue 590-700 part, water 2350-2600 part mixes.
Preferred: described glue by weight part be 600 parts, high strength structure glue, 2400 parts, water mixes.
The making method of dispersibility latex powder in the present invention: comprise the following steps,
1) making of glue, drops into water and high strength structure glue in reactor, within hybrid reaction 6-9 hour at normal temperatures, goes out still;
2) making of emulsion, high strength structure glue, vinyl acetate, polyvinyl alcohol, ethyl propenoate, kaolin, Octyl acrylate, defoamer, butyl acrylate, emulsifying agent, butyl phthalyl, sodium lauryl sulphate, water, ammonium persulphate, sodium-acetate, sodium bicarbonate are dropped into reactor, reacts at normal temperatures after 8-10 hour and go out still;
3) get the glue, the step 2 that mix in step 1)) in the emulsion that mixes, insert material-compound tank, then add 707 vinylformic acid blending emulsions, coarse whiting, defoamer, water, sodium bicarbonate prepares desired raw material;
4) by the feedstock transportation for preparing to the storage tank of drying plant, open heating equipment, make the temperature of drying tower remain between 165 °-175 °;
5) open storage tank, raw material is inputted drying tower, the latex powder of ejection powdery, enter mixed bag platform through air inducing cooling.
Dispersibility latex powder in the present invention in use there will not be bonding, merges and caking, has excellent mobility, can guarantee to be used as performance specific to the material of construction such as concrete, sand-cement slurry simultaneously.
And the dispersibility latex powder in the present invention is sent on hot blast tube wall at drying tower gas blower and has been installed a batcher, silicon-dioxide (powdery) is sent in tower, wrap up with the latex powder of spraying, which reduces viscosity, feed system no longer blocks, product is the unsuitable moisture absorption also, extends product staging life.
Embodiment
Below the specific embodiment in the present invention is described in further detail.
Embodiment 1
Dispersibility latex powder in the present embodiment is emulsion 1700 parts by weight part, 600 parts, glue, 707 vinylformic acid blending emulsions 800 parts, coarse whiting (water-ground limestone) 100 parts, defoamer 6 parts, 200 parts, water, 2 parts, sodium bicarbonate (sodium bicarbonate) mixes, wherein emulsion is by 60 parts, high strength structure glue (NJ-1), vinyl acetate 1150 parts, polyvinyl alcohol 30 parts, ethyl propenoate 80 parts, kaolin 35 parts, Octyl acrylate 50 parts, defoamer 3 parts, butyl acrylate 150 parts, emulsifying agent 20 parts, butyl phthalyl 120 parts, sodium lauryl sulphate (K12) 3 parts, 1500 parts, water, ammonium persulphate 6 parts, sodium-acetate 15 parts, 2 parts, sodium bicarbonate mixes.Glue is mixed by 600 parts, high strength structure glue, 2400 parts, water.
Concrete making step is as follows:
1, the making of glue, by 2400 parts, water, in high strength structure glue (acrylate) 600 parts of input reactors, hybrid reaction goes out still in 8 hours at normal temperatures, water is utilized fully to be diluted by high strength structure glue in this step, the heat produced in the use procedure of effective release acrylate, makes follow-up mixing more fully with even;
2, the making of emulsion, by 60 parts, high strength structure glue, vinyl acetate 1150 parts, polyvinyl alcohol 30 parts, ethyl propenoate 80 parts, kaolin 35 parts, Octyl acrylate 50 parts, defoamer 3 parts, butyl acrylate 150 parts, emulsifying agent 20 parts, butyl phthalyl 120 parts, sodium lauryl sulphate 3 parts, 1500 parts, water, ammonium persulphate 6 parts, sodium-acetate 15 parts, sodium bicarbonate 2 parts of input reactors, react at normal temperatures after 9 hours and go out still; Utilize in this step and there is the strong vinyl acetate of bonding, conjunctiva, dispersibility and polyvinyl alcohol as main raw, in addition ammonium persulphate, sodium-acetate, emulsifying agent, sodium bicarbonate are assisted again, utilize sodium lauryl sulphate play foaming and advance water-reducing rate effect, utilize Octyl acrylate, ethyl propenoate, butyl acrylate, butyl phthalyl to play plasticising, conjunctiva effect;
3, get 600 parts, the glue mixed in step 1, the emulsion 1700 parts mixed in step 2, insert material-compound tank, then add 707 vinylformic acid blending emulsion 800 parts, coarse whiting 100 parts, defoamer 6 parts, 200 parts, water, 2 parts, sodium bicarbonate, prepare desired raw material; Utilize 707 vinylformic acid blending emulsions as matrix material in this step, utilize coarse whiting as stopping composition and coated material;
4, by the feedstock transportation for preparing to the storage tank of drying plant, open heating equipment, what make drying tower remains between 165 °-175 ° simultaneously;
5, open storage tank, by the raw material input drying tower in storage tank, spray the latex powder of powdery after drying process, then enter mixed bag platform through air inducing cooling;
Can send on hot blast tube wall at drying tower gas blower between step 4 and step 5 and a batcher has been installed, powdered silica (white carbon black) is sent in tower, wrap up with the latex powder of spraying, which reduces viscosity, feed system no longer blocks, product is the unsuitable moisture absorption also, extends product staging life.
Embodiment 2
Dispersibility latex powder in the present embodiment is emulsion 1600 parts by weight part, 650 parts, glue, 707 vinylformic acid blending emulsions 700 parts, coarse whiting 100 parts, defoamer 6 parts, 180 parts, water, 2 parts, sodium bicarbonate mixes, wherein emulsion is by 60 parts, high strength structure glue, vinyl acetate 1100 parts, polyvinyl alcohol 30 parts, ethyl propenoate 80 parts, kaolin 35 parts, Octyl acrylate 50 parts, defoamer 3 parts, butyl acrylate 150 parts, emulsifying agent 20 parts, butyl phthalyl 120 parts, sodium lauryl sulphate 3 parts, 1400 parts, water, ammonium persulphate 6 parts, sodium-acetate 15 parts, 2 parts, sodium bicarbonate mixes.Glue is mixed by 700 parts, high strength structure glue, 2450 parts, water.
Concrete making step is as follows:
1, the making of glue, by 2450 parts, water, in high strength structure glue 700 parts of input reactors, hybrid reaction goes out still in 9 hours at normal temperatures;
2, the making of emulsion, by 60 parts, high strength structure glue, vinyl acetate 1100 parts, polyvinyl alcohol 30 parts, ethyl propenoate, 80 parts, kaolin 35 parts, Octyl acrylate 50 parts, defoamer 3 parts, butyl acrylate 150 parts, emulsifying agent 20 parts, butyl phthalyl 120 parts, sodium lauryl sulphate 3 parts, 1400 parts, water, ammonium persulphate 6 parts, sodium-acetate 15 parts, sodium bicarbonate 2 parts of input reactors, react after 10 hours at normal temperatures and go out still;
3, get 650 parts, the glue mixed in step 1, the emulsion 1650 parts mixed in step 2, insert material-compound tank, then add 707 vinylformic acid blending emulsion 700 parts, coarse whiting 100 parts, defoamer 6 parts, 180 parts, water, 2 parts, sodium bicarbonate, prepare desired raw material;
4, by the feedstock transportation for preparing to the storage tank of drying plant, open heating equipment, what make drying tower remains between 165 °-175 ° simultaneously;
5, open storage tank, by the raw material input drying tower in storage tank, spray the latex powder of powdery after drying process, then enter mixed bag platform through air inducing cooling.
Embodiment 3
Dispersibility latex powder in the present embodiment is emulsion 1800 parts by weight part, 700 parts, glue, 707 vinylformic acid blending emulsions 750 parts, coarse whiting 150 parts, defoamer 6 parts, 250 parts, water, 2 parts, sodium bicarbonate mixes, wherein emulsion is by 60 parts, high strength structure glue, vinyl acetate 1200 parts, polyvinyl alcohol 30 parts, ethyl propenoate 80 parts, kaolin 35 parts, Octyl acrylate 50 parts, defoamer 3 parts, butyl acrylate 150 parts, emulsifying agent 20 parts, butyl phthalyl 120 parts, sodium lauryl sulphate 3 parts, 1600 parts, water, ammonium persulphate 6 parts, sodium-acetate 15 parts, 2 parts, sodium bicarbonate mixes.Glue is mixed by 650 parts, high strength structure glue, 2600 parts, water.
Concrete making step is as follows:
1, the making of glue, by 2600 parts, water, in high strength structure glue 650 parts of input reactors, hybrid reaction goes out still in 6 hours at normal temperatures;
2, the making of emulsion, by 60 parts, high strength structure glue, vinyl acetate 1200 parts, polyvinyl alcohol 30 parts, ethyl propenoate, 80 parts, kaolin 35 parts, Octyl acrylate 50 parts, defoamer 3 parts, butyl acrylate 150 parts, emulsifying agent 20 parts, butyl phthalyl 120 parts, sodium lauryl sulphate 3 parts, 1600 parts, water, ammonium persulphate 6 parts, sodium-acetate 15 parts, sodium bicarbonate 2 parts of input reactors, react after 8 hours at normal temperatures and go out still;
3, get 700 parts, the glue mixed in step 1, the emulsion 1800 parts mixed in step 2, insert material-compound tank, then add 707 vinylformic acid blending emulsion 750 parts, coarse whiting 150 parts, defoamer 6 parts, 250 parts, water, 2 parts, sodium bicarbonate, prepare desired raw material;
4, by the feedstock transportation for preparing to the storage tank of drying plant, open heating equipment, what make drying tower remains between 165 °-175 ° simultaneously;
5, open storage tank, by the raw material input drying tower in storage tank, spray the latex powder of powdery after drying process, then enter mixed bag platform through air inducing cooling.
Embodiment 4
Dispersibility latex powder in the present embodiment is emulsion 1750 parts by weight part, 580 parts, glue, 707 vinylformic acid blending emulsions 850 parts, coarse whiting 80 parts, defoamer 6 parts, 230 parts, water, 2 parts, sodium bicarbonate mixes, wherein emulsion is by 60 parts, high strength structure glue, vinyl acetate 1180 parts, polyvinyl alcohol 30 parts, ethyl propenoate 80 parts, kaolin 35 parts, Octyl acrylate 50 parts, defoamer 3 parts, butyl acrylate 150 parts, emulsifying agent 20 parts, butyl phthalyl 120 parts, sodium lauryl sulphate 3 parts, 1550 parts, water, ammonium persulphate 6 parts, sodium-acetate 15 parts, 2 parts, sodium bicarbonate mixes.Glue is mixed by 590 parts, high strength structure glue, 2350 parts, water.
Concrete making step is as follows:
1, the making of glue, by 2350 parts, water, in high strength structure glue 590 parts of input reactors, hybrid reaction goes out still in 7 hours at normal temperatures;
2, the making of emulsion, by 60 parts, high strength structure glue, vinyl acetate 1180 parts, polyvinyl alcohol 30 parts, ethyl propenoate, 80 parts, kaolin 35 parts, Octyl acrylate 50 parts, defoamer 3 parts, butyl acrylate 150 parts, emulsifying agent 20 parts, butyl phthalyl 120 parts, sodium lauryl sulphate 3 parts, 1550 parts, water, ammonium persulphate 6 parts, sodium-acetate 15 parts, sodium bicarbonate 2 parts of input reactors, react after 8 hours at normal temperatures and go out still;
3, get 580 parts, the glue mixed in step 1, the emulsion 1750 parts mixed in step 2, insert material-compound tank, then add 707 vinylformic acid blending emulsion 850 parts, coarse whiting 80 parts, defoamer 6 parts, 230 parts, water, 2 parts, sodium bicarbonate, prepare desired raw material;
4, by the feedstock transportation for preparing to the storage tank of drying plant, open heating equipment, what make drying tower remains between 165 °-175 ° simultaneously;
5, open storage tank, by the raw material input drying tower in storage tank, spray the latex powder of powdery after drying process, then enter mixed bag platform through air inducing cooling.
In sum, the dispersibility latex powder in the present invention has following advantage:
1, the use of coarse whiting, coarse whiting is calcite in powder, be the abbreviation of water-ground limestone, have that chemical purity is high, inertia greatly, not easily chemical reaction, Heat stability is good, can not decompose below 400 DEG C, the advantage such as whiteness is high, oil absorbency is low, refractive index is low, matter is soft, dry, little, nontoxic, tasteless containing crystal water, the low wear(ing)value of hardness, odorless, good dispersity.In the end a step adds the coarse whiting of specific deal, can guarantee the dispersiveness of latex powder.
2, the substep mixing of high strength structure glue, effectively solves the problem that boning, merging and lump easily appears in latex powder, effectively improves the mobility of latex powder.
3, the quantitative use of defoamer and sodium bicarbonate, makes latex powder to manufacture the performance in process more stable, and solves the problem of the bonding of latex powder, fusion and caking further.
Claims (9)
1. a dispersibility latex powder, mixed by following raw material, emulsion, glue, 707 vinylformic acid blending emulsions, coarse whiting, defoamer, water, sodium bicarbonate, wherein emulsion is mixed by high strength structure glue, vinyl acetate, polyvinyl alcohol, ethyl propenoate, kaolin, Octyl acrylate, defoamer, butyl acrylate, emulsifying agent, butyl phthalyl, sodium lauryl sulphate, water, ammonium persulphate, sodium-acetate, sodium bicarbonate; Glue is mixed by water and high strength structure glue.
2. dispersibility latex powder according to claim 1, it is characterized in that, following starting material are weight part, and described emulsion is 1600-1800 part, glue 580-700 part, 707 vinylformic acid blending emulsion 750-850 parts, coarse whiting 80-150 part, defoamer 6 parts, water 180-250 part, 2 parts, sodium bicarbonate.
3. dispersibility latex powder according to claim 2, it is characterized in that, following starting material are weight part, and described emulsion is 1700 parts, 600 parts, glue, 707 vinylformic acid blending emulsion 800 parts, coarse whiting 100 parts, defoamer 6 parts, 200 parts, water, 2 parts, sodium bicarbonate.
4. dispersibility latex powder according to claim 2, it is characterized in that, following starting material are weight part, and described emulsion is mixed by 60 parts, high strength structure glue, vinyl acetate 1100-1200 part, polyvinyl alcohol 30 parts, ethyl propenoate 80 parts, kaolin 35 parts, Octyl acrylate 50 parts, defoamer 3 parts, butyl acrylate 150 parts, emulsifying agent 20 parts, butyl phthalyl 120 parts, sodium lauryl sulphate 3 parts, water 1400-1600 part, ammonium persulphate 6 parts, sodium-acetate 15 parts, 2 parts, sodium bicarbonate.
5. dispersibility latex powder according to claim 4, it is characterized in that, following starting material are weight part, and described emulsion is mixed by 60 parts, high strength structure glue, vinyl acetate 1150 parts, polyvinyl alcohol 30 parts, ethyl propenoate 80 parts, kaolin 35 parts, Octyl acrylate 50 parts, defoamer 3 parts, butyl acrylate 150 parts, emulsifying agent 20 parts, butyl phthalyl 120 parts, sodium lauryl sulphate 3 parts, 1500 parts, water, ammonium persulphate 6 parts, sodium-acetate 15 parts, 2 parts, sodium bicarbonate.
6. dispersibility latex powder according to claim 2, is characterized in that, described glue by weight part be high strength structure glue 590-700 part, water 2350-2600 part mixes.
7. dispersibility latex powder according to claim 6, is characterized in that, described glue by weight part be 600 parts, high strength structure glue, 2400 parts, water mixes.
8. the making method of a dispersibility latex powder: comprise the following steps,
1) making of glue, drops into water and high strength structure glue in reactor, within hybrid reaction 6-9 hour at normal temperatures, goes out still;
2) making of emulsion, high strength structure glue, vinyl acetate, polyvinyl alcohol, ethyl propenoate, kaolin, Octyl acrylate, defoamer, butyl acrylate, emulsifying agent, butyl phthalyl, sodium lauryl sulphate, water, ammonium persulphate, sodium-acetate, sodium bicarbonate are dropped into reactor, reacts at normal temperatures after 8-10 hour and go out still;
3) get step 1) in the glue, the step 2 that mix) in the emulsion that mixes, insert material-compound tank, then add 707 vinylformic acid blending emulsions, coarse whiting, defoamer, water, sodium bicarbonate prepares desired raw material;
4) by the feedstock transportation for preparing to the storage tank of drying plant, open heating equipment, make the temperature of drying tower remain between 165 °-175 °;
5) open storage tank, raw material is inputted drying tower, the latex powder of ejection powdery, enter mixed bag platform through air inducing cooling.
9. the making method of dispersibility latex powder according to claim 8, is characterized in that, the weight part of each step Raw respectively, step 1) in 2400 parts, water, high strength structure glue 600; Step 2) middle 60 parts, high strength structure glue, vinyl acetate 1150 parts, polyvinyl alcohol 30 parts, ethyl propenoate 80 parts, kaolin 35 parts, Octyl acrylate 50 parts, defoamer 3 parts, butyl acrylate 150 parts, emulsifying agent 20 parts, butyl phthalyl 120 parts, sodium lauryl sulphate 3 parts, 1500 parts, water, ammonium persulphate 6 parts, sodium-acetate 15 parts, 2 parts, sodium bicarbonate; Step 3) 600 parts, glue, emulsion 1700 parts.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106244056A (en) * | 2016-08-26 | 2016-12-21 | 苏州普斯特材料科技有限公司 | A kind of automobile antidetonation adhesive |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110527330A (en) * | 2018-05-24 | 2019-12-03 | 广州禹神建筑防水工程有限公司 | A kind of waterproof material formula and preparation method |
| CN111409332A (en) * | 2020-05-12 | 2020-07-14 | 江阴市神鹿塑胶有限公司 | Preparation formula and preparation method of high-polymer composite waterproof coiled material |
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| CN101121768A (en) * | 2007-09-19 | 2008-02-13 | 山西三维集团股份有限公司 | Polyvinyl acetate copolymerization emulsion |
| CN101125946A (en) * | 2007-09-19 | 2008-02-20 | 山西三维集团股份有限公司 | Redispersible latex powder |
| CN101942164A (en) * | 2009-07-05 | 2011-01-12 | 徐永泽 | Multipurpose redispersible emulsion powder and preparation method thereof |
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2013
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101121768A (en) * | 2007-09-19 | 2008-02-13 | 山西三维集团股份有限公司 | Polyvinyl acetate copolymerization emulsion |
| CN101125946A (en) * | 2007-09-19 | 2008-02-20 | 山西三维集团股份有限公司 | Redispersible latex powder |
| CN101942164A (en) * | 2009-07-05 | 2011-01-12 | 徐永泽 | Multipurpose redispersible emulsion powder and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106244056A (en) * | 2016-08-26 | 2016-12-21 | 苏州普斯特材料科技有限公司 | A kind of automobile antidetonation adhesive |
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