CN107473621A - A kind of preparation method of the redispersible rubber powder with Good All-around Property - Google Patents
A kind of preparation method of the redispersible rubber powder with Good All-around Property Download PDFInfo
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- CN107473621A CN107473621A CN201710844956.3A CN201710844956A CN107473621A CN 107473621 A CN107473621 A CN 107473621A CN 201710844956 A CN201710844956 A CN 201710844956A CN 107473621 A CN107473621 A CN 107473621A
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- China
- Prior art keywords
- preparation
- rubber powder
- polyvinyl acetate
- emulsion
- redispersible rubber
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- 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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
- C04B40/0042—Powdery mixtures
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
The invention discloses a kind of preparation method of the redispersible rubber powder with Good All-around Property, polyvinyl alcohol is dissolved in water polyethylene alcohol basic solution is made；No. 1 polyvinyl acetate emulsion and No. 2 polyvinyl acetate emulsions are mixed and made into compound emulsion；Polyethylene alcohol basic solution and compound emulsion are added in make-up tank to stir 30 minutes and obtain spray liquid；It is sent into hothouse and is spray-dried after the spray liquid of acquisition and anti-caking agent are mixed, produces redispersible rubber powder.Redispersible rubber powder of the present invention both has excellent redispersibility, caking property and water resistance, and its pliability is good, has a wide range of application, and a kind of more excellent redispersible rubber powder new varieties of performance are provided for market.
Description
Technical field
The present invention relates to a kind of preparation method of the redispersible rubber powder with Good All-around Property.
Background technology
Redispersible rubber powder is the thermoplastic resin that a kind of glass transition temperature is less than 30 DEG C, belongs to the material of low compressive strength
Material.Redispersible rubber powder can greatly improve the deformability of inorganic adhesive backers, absorb stress ability, effectively prevent fine fisssure
The generation of seam, greatly improve material bending strength and adhesion strength.
Redispersible rubber powder is presently mainly to be used together with inorganic cementitious materials such as cement, for concrete, water
Cement mortar etc. is modified and powdery paints and powder adhesive etc..In work progress, the bonding to base material can be strengthened
Power, increase adhesion strength, reduce cement solidification shrinkage degree, effectively prevent from ftractureing.The open hour can be extended simultaneously, improve and protect
It is water-based, hydrophobicity can be improved after hardening, reduce the water absorption of pore.Mobility and levelability can also be improved in addition, increased
Add can application property, improve durability, wearability, increase stiffness, improve impact resistance deformability etc..
As the application field of redispersible rubber powder is more and more wider, to the performance requirement of rubber powder also more and more higher.At present
Redispersible rubber powder kind is numerous, and each kind has its unique performance advantage and defect, redispersibility, caking property and
The aspect of performances such as water resistance are difficult to accomplish to take into account.
The content of the invention
A kind of the present invention is intended to provide preparation method of the redispersible rubber powder with Good All-around Property.Present invention side
The redispersible rubber powder that method obtains has excellent redispersibility, caking property and water resistance.
The present invention has the preparation method of the redispersible rubber powder of Good All-around Property, comprises the following steps：
Step 1：The preparation of spray liquid
Polyvinyl alcohol is dissolved in water polyethylene alcohol basic solution is made；By No. 1 polyvinyl acetate emulsion and No. 2 poly-vinegar acid second
Alkene ester emulsion is mixed and made into compound emulsion；Polyethylene alcohol basic solution and compound emulsion are added in make-up tank to stir 30 minutes and sprayed
Spray film；
In step 1, the degree of polymerization of the polyvinyl alcohol is the one or more in 400,800,1700, if several when ratios
Example is any.
In step 1, the alcoholysis degree of the polyvinyl alcohol is the one or more in 85%, 88%, 92%, if it is several when
Ratio is any.
In step 1, the solid content of polyethylene alcohol basic solution is 5%~30%.
In step 1, the viscosity of No. 1 polyvinyl acetate emulsion is 3200-4400mPa.s, solid content is 50%~
60%；The viscosity of No. 2 polyvinyl acetate emulsions is 400-3000mPa.s, and solid content is 55%~65%.
In step 1, the quality of No. 1 polyvinyl acetate emulsion and No. 2 polyvinyl acetate emulsions in the compound emulsion
Than for 1:4~2:1.
In step 1, the mass ratio of polyethylene alcohol basic solution and compound emulsion is 1:1~1:5.
Step 2：Dry
It is sent into hothouse and is spray-dried after spray liquid and the anti-caking agent mixing that step 1 is obtained, after dries i.e.
Obtain redispersible rubber powder.
In step 2, the anti-caking agent is the one or more in wollastonite in powder, calcium carbonate, talcum powder, silica,
If it is several when ratio it is any.
In step 2, the mass ratio of the spray liquid and anti-caking agent is 2:1~8:1.
In step 2, hothouse inlet temperature is 200~210 DEG C, and outlet temperature is 90~100 DEG C, and Drying Time of Vertical Spray Dryer is
10~30 minutes.
The bulk density of redispersible rubber powder prepared by the present invention is 450~600kg/m3, viscosity be 800~
1000mPa.s, average grain diameter (d50) they are 30~70 μm, and (>=150 μm) of fineness is 0.1~5%, water-soluble >=95%.
The present invention prepares new redispersible rubber powder using new formula, both with excellent redispersibility, caking property
And water resistance, and its pliability is good, has a wide range of application, and a kind of more excellent redispersible glue of performance is provided for market
Powder new varieties.
Compared with the prior art, beneficial effects of the present invention are embodied in：
1st, the new redispersible rubber powder that the present invention is prepared using the method for two kinds of latex composite compoundings, while combine two
The excellent properties of kind emulsion, make up the defects of rubber powder prepared by single emulsion is present.
2nd, the performance such as new redispersible rubber powder, amount of air entrainment, mobility prepared by the present invention improves a lot, and is applied to
Different natural environments, there are more preferable regional advantages using upper.
3rd, preparation process of the present invention is simple, easily realizes industrialization.
Embodiment
Embodiment 1：
The preparation method of the redispersible rubber powder with Good All-around Property is as follows in the present embodiment：
1st, the preparation of spray liquid
The polyvinyl alcohol that the degree of polymerization is 400, alcoholysis degree is 85% is dissolved in water the polyethylene for being made that solid content is 15%
Alcohol stoste；No. 1 polyvinyl acetate emulsion and viscosity that by viscosity be 3200mPa.s, solid content is 50% are 400mPa.s, consolidated
Content is 55% No. 2 polyvinyl acetate emulsions in mass ratio 1:1 ratio is mixed and made into compound emulsion；Polyvinyl alcohol is former
Liquid and compound emulsion in mass ratio 1:1 ratio, which adds in make-up tank to stir 30 minutes, is made spray liquid.
2nd, dry
By spray liquid and calcium carbonate in mass ratio 2:It is sent into after 1 ratio mixing in hothouse and carries out 10 points of spray drying
Clock, hothouse inlet temperature are 200 DEG C, and outlet temperature is 90 DEG C, and redispersible rubber powder product is produced after drying.
Redispersible rubber powder bulk density obtained by the present embodiment is 540kg/m3, viscosity 830mPa.s, average grain diameter
(d50) it is 40 μm, (>=150 μm) of fineness is 1.2%, and water solubility is 96%.
Embodiment 2：
The preparation method of the redispersible rubber powder with Good All-around Property is as follows in the present embodiment：
1st, the preparation of spray liquid
The polyvinyl alcohol that the degree of polymerization is 800, alcoholysis degree is 88% is dissolved in water the polyethylene for being made that solid content is 13%
Alcohol stoste；No. 1 polyvinyl acetate emulsion and viscosity that by viscosity be 3500mPa.s, solid content is 53% are 850mPa.s, consolidated
Content is 58% No. 2 polyvinyl acetate emulsions in mass ratio 1:2 ratio is mixed and made into compound emulsion；Polyvinyl alcohol is former
Liquid and compound emulsion in mass ratio 1:2 ratio, which adds in make-up tank to stir 30 minutes, is made spray liquid.
2nd, dry
By spray liquid and wollastonite in powder in mass ratio 4:It is sent into after 1 ratio mixing in hothouse and carries out 15 points of spray drying
Clock, hothouse inlet temperature are 203 DEG C, and outlet temperature is 94 DEG C, and redispersible rubber powder product is produced after drying.
Redispersible rubber powder bulk density obtained by the present embodiment is 520kg/m3, viscosity 940mPa.s, average grain diameter
(d50) it is 48 μm, (>=150 μm) of fineness is 2.5%, water-soluble >=96.8%.
Embodiment 3：
The preparation method of the redispersible rubber powder with Good All-around Property is as follows in the present embodiment：
1st, the preparation of spray liquid
The polyvinyl alcohol that the degree of polymerization is 1700, alcoholysis degree is 92% is dissolved in water the polyethylene for being made that solid content is 10%
Alcohol stoste；No. 1 polyvinyl acetate emulsion and viscosity that by viscosity be 3800mPa.s, solid content is 58% be 1600mPa.s,
Solid content is 61% No. 2 polyvinyl acetate emulsions in mass ratio 2:1 ratio is mixed and made into compound emulsion；By polyvinyl alcohol
Stoste and compound emulsion in mass ratio 1:4 ratio, which adds in make-up tank to stir 30 minutes, is made spray liquid.
2nd, dry
By spray liquid and silica in mass ratio 7:It is sent into after 1 ratio mixing in hothouse and carries out 25 points of spray drying
Clock, hothouse inlet temperature are 208 DEG C, and outlet temperature is 98 DEG C, and redispersible rubber powder product is produced after drying.
Redispersible rubber powder bulk density obtained by the present embodiment is 580kg/m3, viscosity 960mPa.s, average grain diameter
(d50) it is 38 μm, (>=150 μm) of fineness is 2.2%, water solubility 97.1%.
Claims (9)
1. a kind of preparation method of the redispersible rubber powder with Good All-around Property, it is characterised in that comprise the following steps：
Step 1：The preparation of spray liquid
Polyvinyl alcohol is dissolved in water polyethylene alcohol basic solution is made；By No. 1 polyvinyl acetate emulsion and No. 2 polyvinyl acetate
Emulsion is mixed and made into compound emulsion；Polyethylene alcohol basic solution and compound emulsion are added in make-up tank to stir 30 minutes and sprayed
Liquid；
Step 2：Dry
It is sent into hothouse and is spray-dried after spray liquid and the anti-caking agent mixing that step 1 is obtained, being produced after drying can
Redispersibility rubber powder.
2. preparation method according to claim 1, it is characterised in that：
In step 1, the degree of polymerization of the polyvinyl alcohol is the one or more in 400,800,1700, if it is several when ratio appoint
Meaning.
3. preparation method according to claim 1, it is characterised in that：
In step 1, the alcoholysis degree of the polyvinyl alcohol is the one or more in 85%, 88%, 92%, if it is several when ratio
Arbitrarily.
4. preparation method according to claim 1, it is characterised in that：
In step 1, the solid content of polyethylene alcohol basic solution is 5%~30%.
5. preparation method according to claim 1, it is characterised in that：
In step 1, the viscosity of No. 1 polyvinyl acetate emulsion is 3200-4400mPa.s, and solid content is 50%~60%；
The viscosity of No. 2 polyvinyl acetate emulsions is 400-3000mPa.s, and solid content is 55%~65%.
6. preparation method according to claim 1, it is characterised in that：
In step 1, the mass ratio of No. 1 polyvinyl acetate emulsion and No. 2 polyvinyl acetate emulsions is in the compound emulsion
1:4~2:1；Polyethylene alcohol basic solution and the mass ratio of compound emulsion are 1:1~1:5.
7. preparation method according to claim 1, it is characterised in that：
In step 2, the anti-caking agent is the one or more in wollastonite in powder, calcium carbonate, talcum powder, silica, if
Ratio is any when several.
8. preparation method according to claim 1, it is characterised in that：
In step 2, the mass ratio of the spray liquid and anti-caking agent is 2:1~8:1.
9. preparation method according to claim 1, it is characterised in that：
In step 2, hothouse inlet temperature be 200~210 DEG C, outlet temperature be 90~100 DEG C, Drying Time of Vertical Spray Dryer be 10~
30 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710844956.3A CN107473621B (en) | 2017-09-19 | 2017-09-19 | Preparation method of redispersible rubber powder with excellent comprehensive performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710844956.3A CN107473621B (en) | 2017-09-19 | 2017-09-19 | Preparation method of redispersible rubber powder with excellent comprehensive performance |
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| CN107473621A true CN107473621A (en) | 2017-12-15 |
| CN107473621B CN107473621B (en) | 2020-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710844956.3A Active CN107473621B (en) | 2017-09-19 | 2017-09-19 | Preparation method of redispersible rubber powder with excellent comprehensive performance |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115819808A (en) * | 2023-01-10 | 2023-03-21 | 安徽皖维花山新材料有限责任公司 | Water-resistant redispersible latex powder and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3256221A (en) * | 1961-06-15 | 1966-06-14 | Monsanto Co | Powdered polyvinyl ester admixtures with glyoxal |
| CN101125946A (en) * | 2007-09-19 | 2008-02-20 | 山西三维集团股份有限公司 | Redispersible latex powder |
| CN102382407A (en) * | 2011-08-19 | 2012-03-21 | 安徽皖维高新材料股份有限公司 | Redispersible emulsion powder and preparation method thereof |
| CN103408241A (en) * | 2013-07-23 | 2013-11-27 | 上海法普罗新材料股份有限公司 | Redispersible emulsion powder and preparation method thereof |
-
2017
- 2017-09-19 CN CN201710844956.3A patent/CN107473621B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3256221A (en) * | 1961-06-15 | 1966-06-14 | Monsanto Co | Powdered polyvinyl ester admixtures with glyoxal |
| CN101125946A (en) * | 2007-09-19 | 2008-02-20 | 山西三维集团股份有限公司 | Redispersible latex powder |
| CN102382407A (en) * | 2011-08-19 | 2012-03-21 | 安徽皖维高新材料股份有限公司 | Redispersible emulsion powder and preparation method thereof |
| CN103408241A (en) * | 2013-07-23 | 2013-11-27 | 上海法普罗新材料股份有限公司 | Redispersible emulsion powder and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 叶青萱: "《胶粘剂》", 31 October 1999, 中国物资出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115819808A (en) * | 2023-01-10 | 2023-03-21 | 安徽皖维花山新材料有限责任公司 | Water-resistant redispersible latex powder and preparation method thereof |
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| CN107473621B (en) | 2020-02-18 |
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Denomination of invention: A preparation method of redispersible rubber powder with excellent comprehensive performance Effective date of registration: 20230710 Granted publication date: 20200218 Pledgee: Industrial and Commercial Bank of China Limited Chaohu sub branch Pledgor: ANHUI WANWEI UPDATED HIGH-TECH MATERIAL INDUSTRY Co.,Ltd. Registration number: Y2023980047850 |
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