CN110760148A - Preparation method of modified redispersible latex powder - Google Patents

Preparation method of modified redispersible latex powder Download PDF

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Publication number
CN110760148A
CN110760148A CN201910956961.2A CN201910956961A CN110760148A CN 110760148 A CN110760148 A CN 110760148A CN 201910956961 A CN201910956961 A CN 201910956961A CN 110760148 A CN110760148 A CN 110760148A
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powder
latex powder
modified
parts
spray drying
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崔松
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JIANGSU ZHAOJIA BUILDING MATERIALS TECHNOLOGY CO LTD
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JIANGSU ZHAOJIA BUILDING MATERIALS TECHNOLOGY CO LTD
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Priority to CN201910956961.2A priority Critical patent/CN110760148A/en
Publication of CN110760148A publication Critical patent/CN110760148A/en
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
    • C08L33/04—Homopolymers or copolymers of esters
    • C08L33/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, which oxygen atoms are present only as part of the carboxyl radical
    • C08L33/08—Homopolymers or copolymers of acrylic acid esters
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
    • C04B24/24—Macromolecular compounds
    • C04B24/26—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C04B24/2623—Polyvinylalcohols; Polyvinylacetates
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
    • C04B24/24—Macromolecular compounds
    • C04B24/26—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C04B24/2641—Polyacrylates; Polymethacrylates
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
    • C04B24/40—Compounds containing silicon, titanium or zirconium or other organo-metallic compounds; Organo-clays; Organo-inorganic complexes
    • C04B24/42—Organo-silicon compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
    • C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
    • C08F220/10—Esters
    • C08F220/12—Esters of monohydric alcohols or phenols
    • C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
    • C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
    • C04B2103/0045—Polymers chosen for their physico-chemical characteristics
    • C04B2103/0057—Polymers chosen for their physico-chemical characteristics added as redispersable powders
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2227—Oxides; Hydroxides of metals of aluminium
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/24—Acids; Salts thereof
    • C08K3/26—Carbonates; Bicarbonates
    • C08K2003/265—Calcium, strontium or barium carbonate

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Structural Engineering (AREA)
  • Materials Engineering (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Health & Medical Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

A preparation method of modified re-dispersible latex powder comprises the following steps: sequentially adding ammonium chloride and polyvinyl alcohol into 100 parts of water by weight, heating to 50-60 ℃, adding methyl methacrylate and butyl acrylate, heating to 85-95 ℃, stirring, preserving heat for 220min, and filtering to obtain a primary emulsion; uniformly mixing the primary emulsion, talcum powder and polydimethylsiloxane, and spray-drying to obtain emulsion powder; weighing emulsifier OP-10, dissolving polyvinyl alcohol in water to form a uniform solution, adding heavy calcium carbonate and alumina while stirring strongly, and spray drying to prepare a modifier; mixing the prepared latex powder and modifier according to the proportion of 100: (8-11) to obtain the redispersible emulsion powder. The modified redispersible latex powder prepared by the invention has greatly increased water resistance strength, thereby ensuring the service performance in a humid environment and having good market prospect.

Description

Preparation method of modified redispersible latex powder
Technical Field
The invention relates to the field of building additives, in particular to a preparation method of modified redispersible latex powder.
Background
The redispersible latex powder is a powdery polymer product obtained by spray drying or other means of polymer emulsion, and has the characteristic of being redispersible into emulsion in water. The redispersible latex powder is a necessary polymer additive in the dry-mixed mortar, and the latex powder is adopted for modifying the dry-mixed mortar, so that the bonding strength of the dry-mixed mortar with various base materials can be improved, and the flexibility, the deformability, the bending strength, the wear resistance, the toughness, the water retention capacity and the workability of the mortar are improved.
At present, the redispersible latex powder sold in the market is mainly of VAE series, which has the advantage of low price, but is weak in water resistance.
Disclosure of Invention
The invention aims to provide a preparation method of modified redispersible latex powder, which improves the water-resistant bonding performance of dry powder mortar and various base materials under the condition of unchanged mixing amount.
The technical scheme of the invention is as follows:
a preparation method of modified re-dispersible latex powder comprises the following steps:
(1) sequentially adding 1-2 parts of ammonium chloride and 4-8 parts of polyvinyl alcohol into 100 parts of water according to the parts by weight, heating to 50-60 ℃, adding 20-30 parts of methyl methacrylate and 30-40 parts of butyl acrylate, heating to 85-95 ℃, stirring and preserving heat for 220min, and filtering to obtain a primary emulsion;
(2) uniformly mixing the primary emulsion, the talcum powder and the polydimethylsiloxane according to the mass ratio, and performing spray drying to prepare emulsion powder; the mass ratio of the primary emulsion to the talcum powder to the polydimethylsiloxane is 10: 1: (1-1.2);
(3) weighing emulsifier OP-10 and polyvinyl alcohol according to the mass ratio, dissolving in water to form a uniform solution, adding heavy calcium carbonate and alumina while stirring strongly, and performing spray drying to prepare a modifier; the mass ratio of the emulsifier OP-10 to the polyvinyl alcohol to the water to the ground calcium carbonate to the alumina is 3: 1: 35: 1.5: 1;
(4) mixing the prepared latex powder and modifier according to the proportion of 100: and (8-11) are uniformly mixed to obtain the modified redispersible latex powder.
Preferably, the air inlet temperature of the spray drying tower in the step (2) is set to be 150-.
Preferably, the fineness of the talcum powder in the step (2) is 2000-2500 meshes.
Preferably, in the step (3), the inlet air temperature of the spray drying tower is set to be 130-149 ℃, the feed flow rate is 7-10 ml/min, the outlet temperature is 70-78 ℃, and the rotation speed of the atomizer is 12000-13000 rpm.
Preferably, the fineness of the heavy calcium carbonate in the step (3) is 1000-1600 meshes.
Preferably, the fineness of the alumina in the step (3) is 1200-1800 meshes.
In conclusion, the water-resistant strength of the redispersible latex powder is greatly increased, so that the use performance of the redispersible latex powder in a humid environment is ensured.
Detailed Description
The present invention will be further described with reference to the following examples.
Example 1
A preparation method of modified re-dispersible latex powder comprises the following steps:
(1) sequentially adding 1 part of ammonium chloride and 4 parts of polyvinyl alcohol into 100 parts of water according to parts by weight, heating to 50 ℃, adding 20 parts of methyl methacrylate and 30 parts of butyl acrylate, heating to 85 ℃, stirring and preserving heat for 220min, and filtering to obtain a primary emulsion;
(2) uniformly mixing the primary emulsion, the talcum powder and the polydimethylsiloxane according to the mass ratio, and performing spray drying to prepare emulsion powder; the mass ratio of the primary emulsion to the talcum powder to the polydimethylsiloxane is 10: 1: 1; setting the inlet air temperature of the spray drying tower at 150-; the fineness of the talcum powder is 2000 meshes;
(3) weighing emulsifier OP-10 and polyvinyl alcohol according to the mass ratio, dissolving in water to form a uniform solution, adding heavy calcium carbonate and alumina while stirring strongly, and performing spray drying to prepare a modifier; the mass ratio of the emulsifier OP-10 to the polyvinyl alcohol to the water to the ground calcium carbonate to the alumina is 3: 1: 35: 1.5: 1; setting the inlet air temperature of the spray drying tower at 130-; the fineness of the heavy calcium carbonate is 1000 meshes; the fineness of the alumina is 1200 meshes;
(4) mixing the prepared latex powder and modifier according to the proportion of 100: 8 to obtain the modified redispersible latex powder.
Example 2
A preparation method of modified re-dispersible latex powder comprises the following steps:
(1) sequentially adding 1.5 parts of ammonium chloride and 6 parts of polyvinyl alcohol into 100 parts of water according to parts by weight, heating to 55 ℃, adding 25 parts of methyl methacrylate and 35 parts of butyl acrylate, heating to 90 ℃, stirring, keeping the temperature for 170min, and filtering to obtain a primary emulsion;
(2) uniformly mixing the primary emulsion, the talcum powder and the polydimethylsiloxane according to the mass ratio, and performing spray drying to prepare emulsion powder; the mass ratio of the primary emulsion to the talcum powder to the polydimethylsiloxane is 10: 1: 1.1; setting the inlet air temperature of the spray drying tower at 150-; the fineness of the talcum powder is 2200 meshes;
(3) weighing emulsifier OP-10 and polyvinyl alcohol according to the mass ratio, dissolving in water to form a uniform solution, adding heavy calcium carbonate and alumina while stirring strongly, and performing spray drying to prepare a modifier; the mass ratio of the emulsifier OP-10 to the polyvinyl alcohol to the water to the ground calcium carbonate to the alumina is 3: 1: 35: 1.5: 1; setting the inlet air temperature of the spray drying tower at 130-; the fineness of the heavy calcium carbonate is 1300 meshes; the fineness of the alumina is 1500 meshes;
(4) mixing the prepared latex powder and modifier according to the proportion of 100: 9 to obtain the modified redispersible latex powder.
Example 3
A preparation method of modified re-dispersible latex powder comprises the following steps:
(1) sequentially adding 2 parts of ammonium chloride and 8 parts of polyvinyl alcohol into 100 parts of water according to the parts by weight, heating to 60 ℃, adding 30 parts of methyl methacrylate and 40 parts of butyl acrylate, heating to 95 ℃, stirring and preserving heat for 120min, and filtering to obtain a primary emulsion;
(2) uniformly mixing the primary emulsion, the talcum powder and the polydimethylsiloxane according to the mass ratio, and performing spray drying to prepare emulsion powder; the mass ratio of the primary emulsion to the talcum powder to the polydimethylsiloxane is 10: 1: 1.2; setting the inlet air temperature of the spray drying tower at 150-; the fineness of the talcum powder is 2500 meshes;
(3) weighing emulsifier OP-10 and polyvinyl alcohol according to the mass ratio, dissolving in water to form a uniform solution, adding heavy calcium carbonate and alumina while stirring strongly, and performing spray drying to prepare a modifier; the mass ratio of the emulsifier OP-10 to the polyvinyl alcohol to the water to the ground calcium carbonate to the alumina is 3: 1: 35: 1.5: 1; setting the inlet air temperature of the spray drying tower at 130-; the fineness of the heavy calcium carbonate is 1600 meshes; the fineness of the alumina is 1800 meshes;
(4) mixing the prepared latex powder and modifier according to the proportion of 100: 11 to obtain the modified redispersible emulsion powder.
The modified redispersible latex powder prepared by the embodiment has greatly increased water resistance strength, thereby ensuring the use performance in a humid environment.

Claims (6)

1. The preparation method of the modified redispersible latex powder is characterized by comprising the following steps:
(1) sequentially adding 1-2 parts of ammonium chloride and 4-8 parts of polyvinyl alcohol into 100 parts of water according to the parts by weight, heating to 50-60 ℃, adding 20-30 parts of methyl methacrylate and 30-40 parts of butyl acrylate, heating to 85-95 ℃, stirring and preserving heat for 220min, and filtering to obtain a primary emulsion;
(2) uniformly mixing the primary emulsion, the talcum powder and the polydimethylsiloxane according to the mass ratio, and performing spray drying to prepare emulsion powder; the mass ratio of the primary emulsion to the talcum powder to the polydimethylsiloxane is 10: 1: (1-1.2);
(3) weighing emulsifier OP-10 and polyvinyl alcohol according to the mass ratio, dissolving in water to form a uniform solution, adding heavy calcium carbonate and alumina while stirring strongly, and performing spray drying to prepare a modifier; the mass ratio of the emulsifier OP-10 to the polyvinyl alcohol to the water to the ground calcium carbonate to the alumina is 3: 1: 35: 1.5: 1;
(4) mixing the prepared latex powder and modifier according to the proportion of 100: and (8-11) are uniformly mixed to obtain the modified redispersible latex powder.
2. The method for preparing the modified re-dispersible latex powder as claimed in claim 1, wherein the air inlet temperature of the spray drying tower in the step (2) is set to be 150-.
3. The method for preparing modified re-dispersible latex powder in claim 1, wherein the fineness of the talc powder in step (2) is 2000-2500 mesh.
4. The method for preparing the modified re-dispersible latex powder as claimed in claim 1, wherein in the step (3), the air inlet temperature of the spray drying tower is set to 130-149 ℃, the feed flow rate is 7-10 ml/min, the outlet temperature is 70-78 ℃, and the rotation speed of the atomizer is 12000-13000 rpm.
5. The method for preparing modified re-dispersible latex powder as claimed in claim 1, wherein the fineness of the ground limestone in step (3) is 1000-1600 mesh.
6. The method for preparing modified re-dispersible latex powder as claimed in claim 1, wherein the fineness of alumina in step (3) is 1200-1800 mesh.
CN201910956961.2A 2019-10-10 2019-10-10 Preparation method of modified redispersible latex powder Pending CN110760148A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111533515A (en) * 2020-06-04 2020-08-14 佛山市德堡建材有限公司 Low-carbon environment-friendly flexible large-plate ceramic tile adhesive

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101696277A (en) * 2009-10-27 2010-04-21 华南理工大学 Redispersable acrylic ester polymer emulsion powder and preparation method thereof
CN102976660A (en) * 2012-12-07 2013-03-20 天津市科垣新型建材有限公司 Disposable disperse re-dispersible emulsion powder
CN104176957A (en) * 2014-08-10 2014-12-03 安徽锦洋氟化学有限公司 Method for modifying fluorine gypsum by using redispersible latex powder
CN107586391A (en) * 2016-07-06 2018-01-16 漪丽科技(深圳)有限公司 A kind of preparation method of redispersable latex powder and powder basement membrane

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101696277A (en) * 2009-10-27 2010-04-21 华南理工大学 Redispersable acrylic ester polymer emulsion powder and preparation method thereof
CN102976660A (en) * 2012-12-07 2013-03-20 天津市科垣新型建材有限公司 Disposable disperse re-dispersible emulsion powder
CN104176957A (en) * 2014-08-10 2014-12-03 安徽锦洋氟化学有限公司 Method for modifying fluorine gypsum by using redispersible latex powder
CN107586391A (en) * 2016-07-06 2018-01-16 漪丽科技(深圳)有限公司 A kind of preparation method of redispersable latex powder and powder basement membrane

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111533515A (en) * 2020-06-04 2020-08-14 佛山市德堡建材有限公司 Low-carbon environment-friendly flexible large-plate ceramic tile adhesive
CN111533515B (en) * 2020-06-04 2022-07-01 佛山市德堡建材有限公司 Low-carbon environment-friendly flexible large-plate ceramic tile adhesive

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Application publication date: 20200207