CN105731874B - A kind of modified redispersible latex powder - Google Patents
A kind of modified redispersible latex powder Download PDFInfo
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- CN105731874B CN105731874B CN201610135559.4A CN201610135559A CN105731874B CN 105731874 B CN105731874 B CN 105731874B CN 201610135559 A CN201610135559 A CN 201610135559A CN 105731874 B CN105731874 B CN 105731874B
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- Prior art keywords
- plasticizer
- parts
- coupling agent
- latex powder
- powder
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Classifications
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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)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The present invention provides a kind of modified redispersible latex powder, which is that first 1.5 2 parts of coupling agents are added in 20 35 parts of plasticizer, and 5 8min are stirred under 100 200 turns/min, then adds 0.3 1 parts of dispersants, continues to stir 5 10min；35 55 parts of redispersable latex powders are added in mixed liquor again, 10 15min are stirred under 500 1000 turns/min；Finally 7 43.2 parts of adsorbents are added in horizontal mixer, in the case where 30 80 turns/min is mixed slowly, using the high-pressure spraying equipment of 0.3 0.5MPa of pressure by mixture even spraying into mixer, stir 15 20min after be made；Plasticizer is epoxy ester series plasticizer, the one or more in triacetyl glycerine class plasticizer, polyalcohol ester plasticizer, citric acid ester plasticizer, and coupling agent is titanate coupling agent and/or silane coupling agent.The modified redispersible latex powder of the present invention is alternative to be widely used in ceramic tile, the EVA rubber powders in EPS XPS plate adhesive mortars, acrylic acid rubber powder at present, also it can arrange in pairs or groups and use with these rubber powders, have the advantages that additive amount is low, adhesion strength is high, water-fast intensity is good.
Description
Technical field
The present invention relates to a kind of additive of building field, more particularly to a kind of redispersible breast using in dry powder and mortar
Rubber powder, specifically relating to a kind of modification that can more preferably improve dry powder and mortar and various base material adhesive properties after modified can be again
Dispersed latex powder.
Background technology
Redispersable latex powder is the polymer powder obtained by aqueous polymer emulsion by spray drying technology, with water
After contact lysis can rapid dispersion be reduced into emulsion state, and there is the performance suitable with former lotion.Redispersable latex powder is
An indispensable polymeric additive in dry powder and mortar, and dry powder and mortar is the widely used New Building Materials of building field,
It can be applied to the bonding field of various building mortars.A certain amount of redispersable latex powder is added in dry powder and mortar, can be improved
The adhesion strength of mortar and various base materials, while the flexibility and deformability, bending strength, wearability, toughness of mortar are improved, with
And water holding capacity and application property.Existing market mainly has EVA using more redispersable latex powders（Ethyl vinyl acetate second
Alkene）Rubber powder, acrylic acid rubber powder, sbr powder, this kind of rubber powder can improve cement mortar and various base materials as organic binder bond, especially
It is the bonding with organic material, but EVA（Ethene-vinyl acetate）The water-fast low strength of rubber powder or acrylic acid rubber powder, thus
In wet condition, its waterproof adhesion performance will be greatly affected greatly.
The content of the invention
To overcome the problem present on, the object of the present invention is to provide a kind of modified redispersible latex powder, the latex
Powder can more preferably improve the waterproof adhesion performance of dry powder and mortar and various base materials in the case where volume is constant.
In order to achieve the above object, the modified redispersible latex powder of the present invention, is by being redispersible including components by weight percent
7-43.2 parts of 35-55 parts of latex powder, 20-35 parts of plasticizer, 1.5-2 parts of coupling agent, 0.3-1 parts of dispersant and adsorbent are with following
Method obtains：
（1）Coupling agent is added in plasticizer solution, 5-8min is stirred under 100-200 turns/min, then adds and divides
Powder, continues to stir 5-10min；
（2）Redispersable latex powder is added to step（1）In obtained mixed liquor, stirred under 500-1000 turns/min
10-15min；
（3）Adsorbent is added in horizontal mixer, in the case where 30-80 turns/min is mixed slowly, using pressure 0.3-
The high-pressure spraying equipment of 0.5MPa is by step（2）Obtained mixture even spraying is into mixer, and stirring 15-20min to obtain the final product
To required modified redispersible latex powder；
Wherein plasticizer is epoxy ester series plasticizer, triacetyl glycerine class plasticizer, polyalcohol ester plasticizer, lemon
One or more in acid ester type plasticizer；Coupling agent is titanate coupling agent and/or silane coupling agent.
One or both of the preferred acrylic acid rubber powder of above-mentioned redispersable latex powder, VAE rubber powders.
The preferred titanate coupling agent of above-mentioned coupling agent and silane coupling agent, both ratios preferably 2:1.
In order to more preferably improve the water resistance of latex powder, the preferred sodium polyphosphate of above-mentioned dispersant, calgon, polypropylene
One or more in acid sodium-salt or stearic acid macrogol ester.
Above-mentioned adsorbent preferred zeolite powder, ultra-fine silicon ash, precipitated silica, aerosil, diatomaceous one kind
It is or several.
When above-mentioned adsorbent is zeolite powder, ultra-fine silicon ash, the preferred 1000-1600 mesh of its fineness.
When above-mentioned adsorbent is precipitated silica, aerosil, the preferred 200-350 mesh of its fineness.
When above-mentioned adsorbent is diatomite, the preferred 700-800 mesh of its fineness.
The modified redispersible latex powder of the present invention, carries out original latex powder using specific plasticizer and coupling agent
It is modified, greatly increase its water-fast intensity, so as to ensure in a humidity environment, mortar and tile substrate or EPS XPS plate still
With good adhesion strength.The present invention modified redispersible latex powder it is alternative at present be widely used in ceramic tile, EPS XPS
EVA rubber powders, acrylic acid rubber powder in plate adhesive mortar, can also arrange in pairs or groups with these rubber powders and use, and have that additive amount is low, adhesion strength
The advantages of high, water-fast intensity is good.
Embodiment
Embodiment 1
1st, the formula of modified redispersible latex powder（Weight ratio）：
EVA latex powders 50%
Tributyl citrate 20%
Silane coupling agent 0.5%
Titanate coupling agent 1.0%
Diatomite（720 mesh） 28%
Calgon 0.5%
2nd, prepare
（1）By above-mentioned formula, silane coupling agent and titanate coupling agent are poured into tributyl citrate solution, 100
Turn/min under stir 5min, then calgon is added in above-mentioned solution, continue stir 5min；
（2）EVA latex powders are added to step（1）Mixed liquor in, 1 0min is stirred under 650 turns/min；
（3）Diatomite is added in horizontal mixer, is mixed slowly under 45 turns/min, using high-pressure spraying equipment
（Pressure 0.3MPa）By step（2）Mixture even spraying into mixer, stir 15min, obtain modified redispersible breast
Rubber powder.
3rd, application and performance test
Using 1：
Unmodified EVA latex powders and the above-mentioned modified EVA latex powder being prepared are added with percentage by weight 1% respectively
Be added to cellulose ether modification cement mortar in, be configured to EPS XPS plate adhesive mortar.
According to JG149-2003《Expanded polystyrene external insulating system for thinly plastered external wall》Test adhesive mortar and polyphenyl second
Alkene thermal insulation board（EPS）Adhesion strength, it is as a result as follows：
As can be seen from the above table, EVA latex powders modified by this invention are not when additive amount is 1% in adhesive mortar, and not
Modified EVA latex powders are compared, and either adhesion strength still destroys the ability of EPS sheet and is respectively provided with obvious advantage, especially
Water-fast intensity, far above unmodified EVA latex powders.
Using 2：
Unmodified EVA latex powders and the above-mentioned modified EVA latex powder being prepared are added with weight ratio 1.5% respectively
In the cement mortar being modified to cellulose ether, ceramic tile cementing mortar is configured to.
According to JC/T 547-2005《Ceramic wall and floor bricks adhesive》The adhesion strength of ceramic tile cementing mortar and ceramic tile is tested,
As a result it is as follows：
As can be seen from the above table, the EVA latex powders modified by this invention additive amount in ceramic tile cementing mortar is 1.5%
When, compared with unmodified EVA latex powders, adhesion strength that its is water-fast has obvious advantage.
Embodiment 2
1st, the formula of modified redispersible latex powder（Weight ratio）：
Acrylic acid rubber powder 40%
Epoxidized soybean oil 30%
Silane coupling agent 0.6%
Titanate coupling agent 1.2%
Aerosil（220 mesh） 12.6%
Diatomite（750 mesh） 15%
Polyacrylic acid sodium salt 0.6%
2nd, prepare
（1）By above-mentioned formula, silane coupling agent and titanate coupling agent are poured into epoxy soybean oil solution, 200 turns/
5min is stirred under min, then glyceryl tristearate is added in above-mentioned solution, continues to stir 5min；
（2）Acrylic acid rubber powder is added to step（1）Mixed liquor in, 1 0min is stirred under 850 turns/min；
（3）Aerosil and metakaolin are added in horizontal mixer, mixes slowly, adopts under 60 turns/min
Use high-pressure spraying equipment（Pressure 0.4MPa）By step（2）Mixture even spraying into mixer, stir 15min, obtain
Modified redispersible latex powder.
3rd, application and performance test
Using 1：
Modified acroleic acid rubber powder prepared by unmodified acrylic acid rubber powder and the present invention is added with weight ratio 1.3% respectively
To cellulose ether be modified cement mortar in, be configured to EPS XPS plate adhesive mortar.
According to JG149-2003《Expanded polystyrene external insulating system for thinly plastered external wall》Test adhesive mortar and polyphenyl second
Alkene thermal insulation board（EPS）Adhesion strength, it is as a result as follows：
As can be seen from the above table, acrylic acid rubber powder modified by this invention in adhesive mortar additive amount be 1.3% when, with
Unmodified acrylic acid rubber powder is compared, and either adhesion strength still destroys the ability of EPS sheet and is respectively provided with obvious advantage, especially
It is that water-fast intensity is far above Unmodified propylene's yogurt rubber powder.
Using 2：
Unmodified acrylic acid rubber powder and the above-mentioned modified acroleic acid rubber powder being prepared are added with 1.8 % of weight ratio respectively
It is added in the cement mortar of cellulose ether modification, is configured to ceramic tile cementing mortar.
According to JC/T 547-2005《Ceramic wall and floor bricks adhesive》The adhesion strength of ceramic tile cementing mortar and ceramic tile is tested,
As a result it is as follows：
As can be seen from the above table, the acrylic acid rubber powder modified by this invention additive amount in ceramic tile cementing mortar is 1.8%
When, compared with Unmodified propylene's acid rubber powder, adhesion strength that its is water-fast has obvious advantage.
Claims (4)
1. a kind of modified redispersible latex powder, is by being 35-55 parts of redispersable latex powder, plasticizer including components by weight percent
7-43.2 parts of 20-35 parts, 1.5-2 parts of coupling agent, 0.3-1 parts of dispersant and adsorbent are obtained with following methods：
（1）Coupling agent is added in plasticizer solution, 5-8min is stirred under 100-200 turns/min, then adds dispersant,
Continue to stir 5-10min；
（2）Redispersable latex powder is added to step（1）In obtained mixed liquor, 10- is stirred under 500-1000 turns/min
15min；
（3）Adsorbent is added in horizontal mixer, in the case where 30-80 turns/min is mixed slowly, using pressure 0.3-0.5MPa
High-pressure spraying equipment by step（2）Into mixer, stirring 15-20min obtains required obtained mixture even spraying
Modified redispersible latex powder；
Wherein redispersable latex powder is one or both of acrylic acid rubber powder, EVA rubber powders；Plasticizer is plasticized for epoxy ester series
Agent or citric acid ester plasticizer；Coupling agent is titanate coupling agent and silane coupling agent, both ratios are 2:1；Dispersant
For the one or more in sodium polyphosphate, calgon, polyacrylic acid sodium salt or stearic acid macrogol ester；Adsorbent is
Zeolite powder, ultra-fine silicon ash, precipitated silica, aerosil, diatomaceous one or more.
2. modified redispersible latex powder according to claim 1, it is characterised in that：The adsorbent is zeolite powder, surpasses
During thin silicon ash, its fineness is 1000-1600 mesh.
3. modified redispersible latex powder according to claim 1, it is characterised in that：The adsorbent is precipitated silica
When silicon, aerosil, its fineness is 200-350 mesh.
4. modified redispersible latex powder according to claim 1, it is characterised in that：When the adsorbent is diatomite,
Its fineness is 700-800 mesh.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610135559.4A CN105731874B (en) | 2016-03-10 | 2016-03-10 | A kind of modified redispersible latex powder |
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| CN201610135559.4A CN105731874B (en) | 2016-03-10 | 2016-03-10 | A kind of modified redispersible latex powder |
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| CN105731874A CN105731874A (en) | 2016-07-06 |
| CN105731874B true CN105731874B (en) | 2018-04-17 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107324686A (en) * | 2017-07-27 | 2017-11-07 | 君旺节能科技股份有限公司 | A kind of gunite concrete additive |
| CN107868262A (en) * | 2017-12-06 | 2018-04-03 | 马鞍山拓锐金属表面技术有限公司 | A kind of polymer SiO2The preparation method of nucleocapsid composite milk rubber powder |
| CN111747702B (en) * | 2020-06-02 | 2022-06-14 | 江苏蓝圈新材料股份有限公司 | Ceramic tile bonding mortar and preparation method thereof |
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| JP3618540B2 (en) * | 1998-03-18 | 2005-02-09 | 株式会社クラレ | Method for producing synthetic resin emulsion powder |
| DE102008008421B4 (en) * | 2008-02-09 | 2014-06-26 | Celanese Emulsions Gmbh | Process for the preparation of polymer dispersions, the dispersions containing them and their use |
| CN101381476B (en) * | 2008-10-24 | 2011-01-26 | 天津市橡胶工业研究所 | Method for preparing activated rubber crumb by catalysis and activation reaction |
| CN101863637B (en) * | 2010-07-05 | 2012-02-01 | 长安大学 | Paving asphalt concrete additive and preparation method thereof |
| CN105086308A (en) * | 2015-07-30 | 2015-11-25 | 北京博润佳科技有限公司 | Water-resistant re-dispersible latex powder |
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Denomination of invention: Modified redispersible emulsion powder Effective date of registration: 20181025 Granted publication date: 20180417 Pledgee: Shantou SME financing Company limited by guarantee Pledgor: Guangdong Longhu Sci.&Tech. Company Limited Registration number: 2018990000994 |
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Date of cancellation: 20191022 Granted publication date: 20180417 Pledgee: Shantou SME financing Company limited by guarantee Pledgor: Guangdong Longhu Sci.&Tech. Company Limited Registration number: 2018990000994 |