CN106630824A - High-cracking-resistant surface coating mortar and preparation method thereof - Google Patents
High-cracking-resistant surface coating mortar and preparation method thereof Download PDFInfo
- Publication number
- CN106630824A CN106630824A CN201611076961.6A CN201611076961A CN106630824A CN 106630824 A CN106630824 A CN 106630824A CN 201611076961 A CN201611076961 A CN 201611076961A CN 106630824 A CN106630824 A CN 106630824A
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- China
- Prior art keywords
- mortar
- water
- preparation
- cracking
- resistant
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- 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.)
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Classifications
-
- 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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- 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
-
- 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
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00482—Coating or impregnation materials
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/34—Non-shrinking or non-cracking materials
- C04B2111/343—Crack resistant materials
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses high-cracking-resistant surface coating mortar and a preparation method thereof. The surface coating mortar prepared by the method contains modified cotton stalk fiber; the stalk fiber has good water resistance and surface reaction activity; the defect that conventional plant fiber can easily absorb moisture is overcome; the firm combination with aggregates such as cement can be realized; the good toughness enhancing and reinforcement effects are achieved; compared with polypropylene fiber, the more excellent weather resistant and aging resistant capability are realized; the production cost is lower. In addition, the surface coating mortar also contains re-dispersible latex powder subjected to modification treatment by paraffin and ultrafine silicon dioxide aerogel; the bonding force and the water resistance of the mortar are further improved; other raw materials are combined, and the finally prepared mortar can form fine-structure firm-bonding cracking-resistant and weather-resistant thin layer after the sufficient hydration; good protection function is realized on external wall heat insulation systems.
Description
Technical field
The present invention relates to decorative mortar technical field, more particularly to a kind of high anti-cracking plastering mortar and preparation method thereof.
Background technology
Building masonry wall insulation is the maximally effective building energy-saving method being currently known, and exterior wall heat-preserving system application is extremely
Extensively.In exterior wall heat-preserving system, insulation material is requisite important materials, and insulation material is complete in actual production process
After pasting into body of wall, need to carry out process of wiping one's face on its surface, so-called process of wiping one's face is exactly to smear sand in heat insulation material surface
Slurry, this mortar is also called decorative mortar, and it is protection insulation laminate that it is acted on, it is desirable to which it should have excellent adhesion strength and fit
With the performance of external environment.
Decorative mortar is mainly by the mineral aggregates such as cement, slag, flyash and redispersable latex powder, cellulose ether etc.
It is obtained after high molecular polymer blending, decorative mortar in the market is primarily present that workability is poor, bonding dynamics is inadequate, surface
Not enough it is fine and smooth it is smooth, easily split, easily aging etc. defect, have a strong impact on the performance and industry attractive in appearance of building, it is more excellent in order to obtain performance
Product, each producer tries to explore new product.《Polypropylene fibers cement mortar Research on Crack Resistance》One text is mixed in mortar
As a result polypropylene fibre shows that it can effectively control the generation in mortar crack to improve the defect that mortar easily ftractures, and changes
Kind cracking phenomena, but polypropylene fibre, because relatively costly, usage amount is restricted, and itself light resistance, heat resistance are poor,
Use Limitation is shorter, so as to lose the modified effect to mortar.
The content of the invention
The object of the invention is exactly to make up the defect of prior art, there is provided a kind of high anti-cracking plastering mortar and its preparation side
Method.
The present invention is achieved by the following technical solutions：
A kind of high anti-cracking plastering mortar, the decorative mortar is made up of the raw material of following weight portion：Portland cement 120-150, in
Sand 50-80, semi-hydrated gypsum 20-30, modified redispersible latex powder 10-15, cellulose ether 1-2, white carbon 20-30, plant drip
Blue or green 3-5, cotton stalk fibre 4-5, the DOPA that the organic silicon water-proofing aqueous finish solution that concentration is 10% is appropriate, concentration is 1-5g/L
Appropriate amine aqueous solution, Tris-HCl cushioning liquid are appropriate, heavy calcium carbonate 15-25, water 100-200.
Described modified redispersible latex powder is made up of the raw material of following weight portion：VAE emulsions 40-50, polyethylene
Alcohol 2-3, paraffin 0.5-0.8, fine silicon dioxide aeroge 0.5-0.8, neopelex 0.1-0.2, OP-10
0.2-0.3, water 40-50.
The preparation method of described modified redispersible latex powder is：
（1）Neopelex, OP-10, polyvinyl alcohol, fine silicon dioxide aeroge, water are put into together into reaction to hold
In device, agitating device is opened, and system is heated into 50-60 DEG C, resulting material is standby after stirring mixing 50-80min；
（2）By heating paraffin to melting, agitating device is opened, subsequently will（1）In three times equivalent is added the material of preparation, and system is permanent
Warm 60-65 DEG C, 1-2h is stirred, make emulsified wax liquid standby；
（3）VAE emulsions are put into emulsified wax liquid, continues to stir mixing 40-60min, made after material is sufficiently mixed uniformly
Into emulsion to be sprayed, subsequently it is spray-dried, is obtained final product described modified redispersible latex powder.
The preparation method of described a kind of high anti-cracking plastering mortar is：
（1）Prepare modified cotton stalk fibre：First cotton stalk fibre is immersed in organic silicon water-proofing aqueous finish solution and processes 5-
8h, process is taken out after terminating, and in being again dipped into dopamine solution, and Tris-HCl cushioning liquid regulation systems pH value is added dropwise for 8-
8.5,20-45h is processed, process is taken out after terminating, and material obtains final product modified cotton stalk fibre Jing after washing, drying and processing；
（2）By portland cement, middle sand, semi-hydrated gypsum, white carbon, heavy calcium carbonate and step（1）The modified cotton for preparing
Stalk fibre, mixing and stirring is subsequently added residual components in addition to water, continues batch mixing 40-50min, is eventually adding water, stirs
Obtain final product after mixing uniformly.
Contain a kind of modified cotton stalk fibre in decorative mortar prepared by the present invention, this stalk fibre has good resistance to
Aqueous and surface reaction activity, improves the defect of the easy moisture absorption of traditional plant fiber, with cement etc. gather materials can strong bonded, reach
Good toughness reinforcing, reinforcing effect, has more excellent Weatherproof ageing-resistant ability than polypropylene fibre, and production cost is lower, this
Also containing the redispersable latex powder Jing after paraffin, fine silicon dioxide aeroge modification in the outer present invention, further carry
The bonding dynamics and resistance to water of high mortar, in conjunction with other raw materials, after the abundant aquation of final obtained mortar structure can be formed
The fine and smooth, thin layer that bonding is firm, cracking resistance is weather-proof, External Wall heat-insulation system has good safeguard function.
Specific embodiment
A kind of high anti-cracking plastering mortar, the decorative mortar is made up of the raw material of following weight portion：Portland cement 120, in
Sand 50, semi-hydrated gypsum 20, modified redispersible latex powder 10, cellulose ether 1, white carbon 20, plant asphalt 3, cotton stalk fibre
4th, concentration be 10% organic silicon water-proofing aqueous finish solution is appropriate, concentration for 1g/L dopamine solution is appropriate, Tris-HCl delays
Rush that solution is appropriate, heavy calcium carbonate 15, water 100.
Described modified redispersible latex powder is made up of the raw material of following weight portion：VAE emulsions 40, polyvinyl alcohol 2,
Paraffin 0.5, fine silicon dioxide aeroge 0.5, neopelex 0.1, OP-10 0.2, water 40.
The preparation method of described modified redispersible latex powder is：
（1）Neopelex, OP-10, polyvinyl alcohol, fine silicon dioxide aeroge, water are put into together into reaction to hold
In device, agitating device is opened, and system is heated into 50 DEG C, resulting material is standby after stirring mixing 50min；
（2）By heating paraffin to melting, agitating device is opened, subsequently will（1）In three times equivalent is added the material of preparation, and system is permanent
60 DEG C of temperature, stirs 1h, makes emulsified wax liquid standby；
（3）VAE emulsions are put into emulsified wax liquid, continues to stir mixing 40min, made after material is sufficiently mixed uniformly and treat
Sprayable emulsion, is subsequently spray-dried, and obtains final product described modified redispersible latex powder.
The preparation process of the embodiment mortar is：
（1）Prepare modified cotton stalk fibre：First cotton stalk fibre is immersed in organic silicon water-proofing aqueous finish solution and processes 5h,
Process is taken out after terminating, and in being again dipped into dopamine solution, and it is 8 that Tris-HCl cushioning liquid regulation systems pH value is added dropwise, place
Reason 20h, process is taken out after terminating, and material obtains final product modified cotton stalk fibre Jing after washing, drying and processing；
（2）By portland cement, middle sand, semi-hydrated gypsum, white carbon, heavy calcium carbonate and step（1）The modified cotton for preparing
Stalk fibre, mixing and stirring is subsequently added residual components in addition to water, continues batch mixing 40min, is eventually adding water, stirs
Obtain final product after uniform.
Obtained mortar follows relevant criterion and carries out performance test, and test result is：
| Project | Index |
| Tensile bond strength（28d） | 1.54MPa |
| Immersion tensile bond strength（Normal temperature 28d, soak 7d） | 1.32MPa |
| Backfin ratio | 2.65 |
| Operable time | 1.5h |
| Tensile bond strength in operable time | 0.95MPa |
Claims (4)
1. a kind of high anti-cracking plastering mortar, it is characterised in that the decorative mortar is made up of the raw material of following weight portion：Silicate cement
Mud 120-150, middle sand 50-80, semi-hydrated gypsum 20-30, modified redispersible latex powder 10-15, cellulose ether 1-2, white carbon
20-30, plant asphalt 3-5, cotton stalk fibre 4-5, organic silicon water-proofing aqueous finish solution that concentration is 10% are appropriate, concentration is
The dopamine solution of 1-5g/L is appropriate, Tris-HCl cushioning liquid is appropriate, heavy calcium carbonate 15-25, water 100-200.
2. a kind of high anti-cracking plastering mortar as claimed in claim 1, it is characterised in that described modified redispersible latex powder
It is made up of the raw material of following weight portion：VAE emulsions 40-50, polyvinyl alcohol 2-3, paraffin 0.5-0.8, fine silicon dioxide gas
Gel 0.5-0.8, neopelex 0.1-0.2, OP-100.2-0.3, water 40-50.
3. a kind of high anti-cracking plastering mortar as claimed in claim 1 or 2, it is characterised in that described modified redispersible breast
The preparation method of rubber powder is：
（1）Neopelex, OP-10, polyvinyl alcohol, fine silicon dioxide aeroge, water are put into together into reaction to hold
In device, agitating device is opened, and system is heated into 50-60 DEG C, resulting material is standby after stirring mixing 50-80min；
（2）By heating paraffin to melting, agitating device is opened, subsequently will（1）In three times equivalent is added the material of preparation, and system is permanent
Warm 60-65 DEG C, 1-2h is stirred, make emulsified wax liquid standby；
（3）VAE emulsions are put into emulsified wax liquid, continues to stir mixing 40-60min, made after material is sufficiently mixed uniformly
Into emulsion to be sprayed, subsequently it is spray-dried, is obtained final product described modified redispersible latex powder.
4. the preparation method of a kind of high anti-cracking plastering mortar as described in claims 1 to 3 is arbitrary, its preparation process is：
（1）Prepare modified cotton stalk fibre：First cotton stalk fibre is immersed in organic silicon water-proofing aqueous finish solution and processes 5-
8h, process is taken out after terminating, and in being again dipped into dopamine solution, and Tris-HCl cushioning liquid regulation systems pH value is added dropwise for 8-
8.5,20-45h is processed, process is taken out after terminating, and material obtains final product modified cotton stalk fibre Jing after washing, drying and processing；
（2）By portland cement, middle sand, semi-hydrated gypsum, white carbon, heavy calcium carbonate and step（1）The modified cotton for preparing
Stalk fibre, mixing and stirring is subsequently added residual components in addition to water, continues batch mixing 40-50min, is eventually adding water, stirs
Obtain final product after mixing uniformly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611076961.6A CN106630824A (en) | 2016-11-30 | 2016-11-30 | High-cracking-resistant surface coating mortar and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611076961.6A CN106630824A (en) | 2016-11-30 | 2016-11-30 | High-cracking-resistant surface coating mortar and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106630824A true CN106630824A (en) | 2017-05-10 |
Family
ID=58813218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611076961.6A Pending CN106630824A (en) | 2016-11-30 | 2016-11-30 | High-cracking-resistant surface coating mortar and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106630824A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112456889A (en) * | 2020-12-28 | 2021-03-09 | 成都寒禹玫建筑科技有限公司 | Preparation method of external wall thermal insulation material |
| CN113800834A (en) * | 2021-09-24 | 2021-12-17 | 兰州理工大学 | High-compactness waterproof mortar and preparation process thereof |
| CN114085057A (en) * | 2021-11-18 | 2022-02-25 | 湖南志洲新型干混建材有限公司 | Plastering anti-crack mortar and preparation method thereof |
| CN114349429A (en) * | 2022-01-18 | 2022-04-15 | 无锡交通建设工程集团有限公司 | Lightweight concrete |
| CN115947575A (en) * | 2023-01-05 | 2023-04-11 | 中科华坤(北京)科技有限公司 | Method for improving mechanical property of basalt fiber concrete |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101209916A (en) * | 2007-12-24 | 2008-07-02 | 上海东升新材料有限公司 | White finishing mortar composition |
| 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 |
| CN105818398A (en) * | 2016-03-13 | 2016-08-03 | 北京化工大学 | Chopped fiber dispersion and preparation method thereof |
-
2016
- 2016-11-30 CN CN201611076961.6A patent/CN106630824A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101209916A (en) * | 2007-12-24 | 2008-07-02 | 上海东升新材料有限公司 | White finishing mortar composition |
| 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 |
| CN105818398A (en) * | 2016-03-13 | 2016-08-03 | 北京化工大学 | Chopped fiber dispersion and preparation method thereof |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112456889A (en) * | 2020-12-28 | 2021-03-09 | 成都寒禹玫建筑科技有限公司 | Preparation method of external wall thermal insulation material |
| CN113800834A (en) * | 2021-09-24 | 2021-12-17 | 兰州理工大学 | High-compactness waterproof mortar and preparation process thereof |
| CN114085057A (en) * | 2021-11-18 | 2022-02-25 | 湖南志洲新型干混建材有限公司 | Plastering anti-crack mortar and preparation method thereof |
| CN114349429A (en) * | 2022-01-18 | 2022-04-15 | 无锡交通建设工程集团有限公司 | Lightweight concrete |
| CN114349429B (en) * | 2022-01-18 | 2022-09-23 | 无锡交通建设工程集团有限公司 | Lightweight concrete |
| CN115947575A (en) * | 2023-01-05 | 2023-04-11 | 中科华坤(北京)科技有限公司 | Method for improving mechanical property of basalt fiber concrete |
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Application publication date: 20170510 |
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