CN104098814B - Or else dispersed latex powder and application thereof - Google Patents
Or else dispersed latex powder and application thereof Download PDFInfo
- Publication number
- CN104098814B CN104098814B CN201410288550.8A CN201410288550A CN104098814B CN 104098814 B CN104098814 B CN 104098814B CN 201410288550 A CN201410288550 A CN 201410288550A CN 104098814 B CN104098814 B CN 104098814B
- Authority
- CN
- China
- Prior art keywords
- cross
- linking agent
- latex powder
- water
- powder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Paints Or Removers (AREA)
Abstract
Invention relates to construction material, in particular a kind of polymer emulsion powder or else dispersed latex powder；It is prepared from by the material of following weight percent content: redispersable latex powder 95.8% 97.95%, powdered cross-linking agent 2% 4%, powdered catalyst 0.05% 0.2%；Described cross-linking agent is the cross-linking agent containing two or more functional group.The present invention adds polyfunctional group class cross-linking agent and catalyst in redispersable latex powder；Under normal temperature and pressure, or else dispersed latex powder hydrolyzes generation active function groups in water, under the catalytic action of catalyst, with the hydroxyl of polymer, carboxyl, amino isoreactivity group cross-linking reaction forms network polymers, air slaking are solidified into netted overlapping fine and close film after drying, close hydrophilic group in redispersable latex powder, improve resistance to water, and above-mentioned reaction can realize at normal temperatures and pressures.
Description
Technical field
The present invention relates to construction material, in particular a kind of polymer emulsion powder or else dispersed latex powder and application thereof.
Background technology
Or else dispersed latex powder is formulated with Main Ingredients and Appearance for polymer emulsion.Polymer emulsion can be vinyl acetate homopolymer, acrylic polymer, ethylene-vinyl acetate copolymer, vinylacetate-vinyl versatate copolymer, acrylic styrene copolymer, vinyl acetate-acrylate-vinyl versatate copolymer, BS etc. its one or more.Film forming during polymer emulsion desiccation, its film forming matter has cementitiousness, water proofing property, pliability, improves the application strength of materials etc., can be applicable to special cement mortar and the synthetic resin building coating of building trade.
Building trade is in the application of special cement mortar at present, is spray-dried by polymer emulsion and forms redispersable latex powder.Redispersable latex powder is water solublity redispersible powder, emulsifiable dispersion after mixing with water, re-forms stable polymer resin emulsion.Its main component includes: polymer resin emulsion, additive, protecting colloid and anti-caking agent.Wherein protecting colloid has hydrophilic, adsorbs and forms protective layer on polymers compositions surface, polymer emulsion can be made to have redispersibility, prevent from mutually boning in polymer spray-drying process and hardening.Therefore, this powder, can be made into and special cement mortar is dry mixed.Special cement mortar is dry mixed and is mainly used in the tile paste of building, joint filling, self drainage terrace, wall insulation system mortar, repair, thin-coat plaster, waterproof mortar etc..Polymer emulsion powder can make the production of special cement mortar, application, efficiency, transport, store, packaging etc. more convenient, faster, accurately, more more environmentally friendly.But, polymer redispersable latex powder is linear structure, containing substantial amounts of carboxyl, alkyl isoreactivity group on its macromolecular chain；The surface adsorption of polymeric components has hydrophilic protecting colloid simultaneously, makes redispersable latex powder desiccation become the process of polymeric film to become reversible, and this will largely effect on the resistance to water of redispersable latex powder；Persistently corrode when running into water, polymeric film will emulsion dispersion again, reduce due adhesion strength after polymer drying and forming-film, water proofing property, pliability is, and modified performance to application material.
The advantages such as polymer emulsion has good film property, an abrasion resistance as the film forming binder of aqueous architectural coating, weatherability, bright in luster and environmental protection, are the current topmost products of building coating base material.But liquid milk shellac varnish also has the shortcoming that it is very important, containing organic volatile (VOC) and chemical preservative, consume substantial amounts of metal and plastic packing article, containing the water of up to more than 70%, waste transport and storage cost, transport and low temperature storage inconvenience etc..Therefore, exploitation Dry powder latex paint is a project with development prospect, and can overcome above-mentioned drawback.Then, research and development Dry powder latex paint just becomes the hope that a building coating industry person of noble aspirations is common.Once having dry powder emulsion paint is directly to be dry mixed with redispersable latex powder, color stuffing and auxiliary agent and obtain, it is dissolved in water and obtains the emulsion paint of liquid, but owing in emulsion paint, polymer film forming thing mostly is linear structure, containing hydrophilic group, there is redispersibility, water resistance there is no guarantee that, not scrubbing resistance, have impact on the serviceability of this dry powder emulsion paint.The dry powder emulsion paint also having, in order to improve resistance to water, adds the Binder Materials such as cement, but it is coarse to create paint film, without drawbacks such as flexible, color xanthochromias.The dry powder emulsion paint using or else dispersed latex powder to make, is dissolved in water and obtains the emulsion paint of liquid, and fluoropolymer resin dispersion emulsion and cross-linking agents react formation network polymers, formed and or else disperse film, coating uniform is fine and smooth, and water resistance is good, it is ensured that the serviceability of dry powder emulsion paint.
Summary of the invention
It is an object of the invention to provide after a kind of polymer emulsion powder meets water emulsification dispersion, and after being dried to polymeric film again, it is impossible to again carry out or else dispersed latex powder and the application thereof of second time emulsion dispersion.
Or else dispersed latex powder, is prepared from by the material mixing and stirring of following weight percent content: redispersable latex powder 95.8%-97.95%, cross-linking agent 2%-4%, catalyst 0.05%-0.2%；Described cross-linking agent is the cross-linking agent containing at least two functional group；Described catalyst is one or more in organo-tin compound, organic titanic compound and tertiary amine.
Preferably, the functional group of described cross-linking agent is hydroxyl, carboxyl, any one of amino.
Preferably, described cross-linking agent in polyalcohols cross-linking agent, polyisocyanates cross-linking agent, aziridines cross-linking agent, acrylic ester cross-linking agent or polynary amine cross-linking agent any one.
Or else the dispersed latex powder of the present invention is mainly used in dry-mixed cement mortar and preparation powdered synthetic resin emulsion paint.
Or else under dispersed latex powder drying regime, redispersable latex powder, cross-linking agent and catalyst are independent of each other, and do not produce and any physically or chemically react.Or else after dispersed latex powder mixes with water, redispersable latex powder emulsion dispersion forms polymer emulsion, and cross-linking agent hydrolysis produces active function groups；Under the catalytic action of organo-metallic compound, active function groups and the hydroxyl of fluoropolymer resin, carboxyl, amino groups cross-linking reaction forms network polymers, air slaking are solidified into netted overlapping fine and close film after drying, closing hydrophilic group in redispersable latex powder, improve resistance to water, above-mentioned reaction can realize at normal temperatures and pressures.
Therefore, in the application of special cement dry-mixed mortar, adding or else dispersed latex powder and can significantly improve the water-fast adhesive strength of mortar, from following table, data can draw.Mixing 2% redispersable latex powder (raw material 1), the former adhesive strength of mortar is 1.1Mpa, and water-fast adhesive strength is 0.7Mpa；And mixing 2% or else dispersed latex powder (finished product 1) (utilizing the or else dispersed latex powder that raw material 1 redispersable latex powder produces), the former intensity of mortar is 1.2Mpa, but water-fast adhesive strength has reached 1.5Mpa.Its Central Plains intensity refers to mortar adhesion strength after standard curing；Water-fast adhesive strength be place into after mortar maintenance at the standard conditions water soaks 7 days after the adhesion strength surveyed.
| Test event | Performance indications | Mix raw material 1(2%) | Mix finished product 1(2%) |
| Former intensity (Mpa) | ≥0.7 | 1.1 | 1.2 |
| Water-fast intensity (Mpa) | ≥0.5 | 0.7 | 1.5 |
In the application of powdered synthetic resin emulsion paint, using or else that dispersed latex powder is as film forming binder, after dried coating film, 72 hours scrubbing resistances are more than 500 times, and within 7 days, more than 2000 times, resistance to water 96 hours is without exception.Technical specification meets the standard of liquid emulsion paint.And using redispersable latex powder as film forming binder, above-mentioned performance is unable to reach the most substantially.
Detailed description of the invention
Embodiment 1
Prepare or else dispersed latex powder A
(1) getting the raw materials ready: take redispersable latex powder 96.85kg, polyisocyanates cross-linking agent 3kg, organo-tin compound 0.1kg, tertiary amine catalyst 0.05kg are as raw material, and above four kinds of raw materials are all powdered, and particle diameter is less than 100 mesh, and its moisture content is less than 2%；
(2) mix and blend: above-mentioned raw materials is placed in blender and stirs；
(3) filtering screening: by filtering in 100 mesh sieves through the mixture of stirring, can be prepared by finished product.
Embodiment 2
Prepare or else dispersed latex powder B
(1) getting the raw materials ready: taking redispersable latex powder 97.94kg, acrylic ester cross-linking agent 2kg, organic titanic compound 0.01kg tertiary amine catalyst 0.05kg as raw material, above four kinds of raw materials are all powdered, particle diameter is less than 100 mesh, and its moisture content is less than 2%；
(2) mix and blend: above-mentioned raw materials is placed in blender and stirs；
(3) filtering screening: will filter in 100 mesh sieves through the mixture of stirring, the finished product that can make.
Embodiment 3
Prepare or else dispersed latex powder C
(1) getting the raw materials ready: take redispersable latex powder 95.97kg, polyalcohols cross-linking agent 4kg, organo-tin compound 0.02kg, tertiary amine catalyst 0.01kg are as raw material, and above four kinds of raw materials are all powdered, and particle diameter is less than 100 mesh, and its water content is less than 2%；
(2) mix and blend: above-mentioned raw materials is placed in blender and stirs；
(3) filtering screening: by filtering in 100 mesh sieves through the mixture of stirring, can be prepared by finished product.
Embodiment 4
Prepare or else dispersed latex powder D
(1) getting the raw materials ready: take redispersable latex powder 95.95kg, aziridines cross-linking agent 4kg, organo-tin compound 0.03kg, tertiary amine catalyst 0.02kg are as raw material, and above four kinds of raw materials are all powdered, and particle diameter is less than 100 mesh, and its water content is less than 2%；
(2) mix and blend: above-mentioned raw materials is placed in blender and stirs；
(3) filtering screening: by filtering in 100 mesh sieves through the mixture of stirring, can be prepared by finished product.
Embodiment 5
Or else dispersed latex powder is applied to cement powder mortar
Or else dispersed latex powder A in Example 1
36g. cement 450g, normal sand 1350g and water 235g mix and blend；After being dried maintenance at the standard conditions, testing its adhesion strength is 1.2Mpa, and being put into by mortar and testing adhesion strength after soaking 7 days in water is 1.5 Mpa.
Embodiment 6
Or else dispersed latex powder is applied to cement powder mortar
Or else dispersed latex powder B in Example 2
36g. cement 450g, normal sand 1350g and water 235g mix and blend；After being dried maintenance at the standard conditions, testing its adhesion strength is 1.1Mpa, and being put into by mortar and testing adhesion strength after soaking 7 days in water is 1.4Mpa.
Embodiment 7
Or else the powdered synthetic resin emulsion paint that prepared by dispersed latex powder
(1) get the raw materials ready: or else dispersed latex powder A 30kg in embodiment 1, titanium dioxide 18 kg, precipitated calcium carbonate 50 kg, hydroxyethyl cellulose 1 kg, powdery defoamer 0.3 kg, powdery levelling agent 0.4 kg, powdery wetting dispersing agent 0.3 kg, above raw material is all powder, and particle diameter is less than 100 mesh, and water content is less than 2%.
(2) mix and blend: above-mentioned raw materials is placed in blender and stirs；
(3) filtering screening: by filtering in 100 mesh sieves through the mixture of stirring, i.e. can be made into finished product.
In the present embodiment, powdered synthetic resin emulsion paint is applied to exterior wall with water after mixing homogeneously with 1:1 ratio, and film property, abrasion resistance, water resistance are good, meet GB/T9755-2001 " exterior wall coating material of synthetic resin emulsion " standard after tested.
| Detection project | Standard-required | The present embodiment testing result |
| Condition in container | Without lump, stirring is in uniform shape | Without lump, stirring is in uniform shape |
| Application property | Brush two roads accessible | Brush two roads accessible |
| Low-temperature stability | Never degenerate | Never degenerate |
| Drying time (surface drying)/h | ≤2 | 0.5 |
| Appearance of film | Normally | Normally |
| Contrast ratio | Qualified | First-class |
| Resistance to water (96h) | Without exception | Without exception |
| Alkali resistance (48h) | Without exception | Without exception |
| Abrasion resistance/time | 500(is qualified), 1000(Grade A), 2000(high-class product) | Scrub 500 times the most show-through |
| Artificial ageing resistance | Qualified | Qualified |
| Stain resistance/% | ≤15 | Excellent |
| Coating temperature-change resistance (5 circulations) | Without exception | Without exception |
Embodiment 8
Or else the powdered synthetic resin emulsion paint that prepared by dispersed latex powder
(1) get the raw materials ready: or else dispersed latex powder C30kg, titanium dioxide 18 in embodiment 3
Kg, precipitated calcium carbonate 50 kg, hydroxyethyl cellulose 1 kg,
Powdery defoamer 0.3 kg, powdery levelling agent 0.4 kg, powdery wetting dispersing agent 0.3 kg, above raw material is all powder, and particle diameter is less than 100 mesh, and water content is less than 2%.
(2) mix and blend: above-mentioned raw materials is placed in blender and stirs；
(3) filtering screening: by filtering in the sieves of 100 mesh through the mixture of stirring, i.e. can be made into finished product.
In the present embodiment, powdered synthetic resin emulsion paint and water are to be applied to exterior wall after 1:1 ratio mixing and stirring, and film property, abrasion resistance, water resistance are good, meet GB/T9755-2001 " exterior wall coating material of synthetic resin emulsion " standard after tested.
| Detection project | Standard-required | The present embodiment testing result |
| Condition in container | Without lump, stirring is in uniform shape | Without lump, stirring is in uniform shape |
| Application property | Brush two roads accessible | Brush two roads accessible |
| Low-temperature stability | Never degenerate | Never degenerate |
| Drying time (surface drying)/h | ≤2 | 0.5 |
| Appearance of film | Normally | Normally |
| Contrast ratio | Qualified | First-class |
| Resistance to water (96h) | Without exception | Without exception |
| Alkali resistance (48h) | Without exception | Without exception |
| Abrasion resistance/time | 500(is qualified), 1000(Grade A), 2000(high-class product) | Scrub 500 times the most show-through |
| Artificial ageing resistance | Qualified | Qualified |
| Stain resistance/% | ≤15 | Excellent |
| Coating temperature-change resistance (5 circulations) | Without exception | Without exception |
Claims (3)
- The most or else dispersed latex powder, it is characterized in that, for dry-mixed cement mortar and preparation powdered synthetic resin emulsion paint, formed by the material mixing and stirring of following weight percent content: redispersable latex powder 95.8%-97.95%, powdered cross-linking agent 2%-4%, powdered catalyst 0.05%-0.2%；Described cross-linking agent is the cross-linking agent containing at least two functional group；Described catalyst is one or more in organo-tin compound, organic titanic compound and tertiary amine.
- The most or else dispersed latex powder, it is characterised in that the functional group of described cross-linking agent is hydroxyl, carboxyl, any one of amido.
- The most or else dispersed latex powder, it is characterised in that described cross-linking agent is selected from polyalcohols cross-linking agent, polyisocyanates cross-linking agent, aziridines cross-linking agent, acrylic ester cross-linking agent or polynary amine cross-linking agent any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410288550.8A CN104098814B (en) | 2014-06-25 | 2014-06-25 | Or else dispersed latex powder and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410288550.8A CN104098814B (en) | 2014-06-25 | 2014-06-25 | Or else dispersed latex powder and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104098814A CN104098814A (en) | 2014-10-15 |
| CN104098814B true CN104098814B (en) | 2016-08-17 |
Family
ID=51667383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410288550.8A Active CN104098814B (en) | 2014-06-25 | 2014-06-25 | Or else dispersed latex powder and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104098814B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111807752A (en) * | 2020-07-23 | 2020-10-23 | 江苏佳境生态工程技术有限公司 | Concrete reinforcing agent special for commercial mixing station and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1208062A (en) * | 1997-07-31 | 1999-02-17 | 瓦克化学有限公司 | Pulverulent crosslinkable textil binder composition |
-
2014
- 2014-06-25 CN CN201410288550.8A patent/CN104098814B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1208062A (en) * | 1997-07-31 | 1999-02-17 | 瓦克化学有限公司 | Pulverulent crosslinkable textil binder composition |
Non-Patent Citations (2)
| Title |
|---|
| 供再不分散乳胶粉;武汉开普鸿升贸易有限公司;《http://www.etuzhuang.com/sca_view.asp?id=18133》;20140508 * |
| 再不分散乳胶粉;泉州市赛伦建材科技有限公司;《http://china.chemnet.com/trade/detail--13476308.html》;20140624 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104098814A (en) | 2014-10-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102408220B (en) | All-in-one water-borne inorganic-organic hybrid architectural coating and preparation method thereof | |
| CN105062281A (en) | I-type environment-friendly two-component polymer cement waterproof paint and preparation method | |
| CN101481584B (en) | Dry powder latex paint for inner wall and preparation thereof | |
| CN102173728A (en) | Self-healing polymer cement waterproofing coating and preparation process thereof | |
| CN102618191A (en) | High-polymer instant-dissolving environment-friendly binder powder | |
| CN109439054B (en) | Putty powder and putty slurry for plastering-free machine, and preparation method and application thereof | |
| CN108314922B (en) | Interior and exterior wall putty powder with high water resistance and preparation method and application thereof | |
| CN102807833B (en) | Water-based inorganic silicon-organic silicon-polyurethane adhesive and preparation method thereof | |
| CN109836909A (en) | A kind of Novel color-changing water-repellent paint and its preparation and construction method | |
| CN109608928A (en) | A kind of inner wall putty powder and preparation method thereof containing organic cementitious material | |
| CN101333403B (en) | Cement-based polymers anti-corrosive paint and method for preparing same | |
| CN110372297A (en) | A kind of polymer cement waterproof slurry and preparation method thereof | |
| CN104072086A (en) | Dry powder decoration mortar free of cement | |
| CN104829175A (en) | High built crack-resistant polymer cement waterproof coating and preparation method thereof | |
| CN105884250A (en) | Polymer protective and decorative adhesive cement | |
| CN102618187A (en) | Cold water fast dissolving rubber powder for buildings | |
| CN104098814B (en) | Or else dispersed latex powder and application thereof | |
| CN107010895A (en) | A kind of assembled architecture cracking resistance bonding mortar | |
| CN109626937A (en) | A kind of preparation method of water proof building plasterboard | |
| CN111892837A (en) | Mildew-proof antibacterial putty powder and preparation method and use method thereof | |
| CN110606693A (en) | Thickening powder for dry-mixed mortar and preparation method thereof | |
| CN109535792B (en) | Interior wall environment-friendly coating and preparation method thereof | |
| CN105985049A (en) | Heat preservation polystyrene board bonding mortar auxiliary for heat preservation system | |
| CN106243846A (en) | A kind of Flexible waterproof paint of highly-breathable and preparation method thereof | |
| CN108219612B (en) | Environment-friendly house leakage maintenance method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |