CN107434391A - A kind of water-fast bonding gypsum powder and preparation method thereof - Google Patents
A kind of water-fast bonding gypsum powder and preparation method thereof Download PDFInfo
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- CN107434391A CN107434391A CN201610353872.5A CN201610353872A CN107434391A CN 107434391 A CN107434391 A CN 107434391A CN 201610353872 A CN201610353872 A CN 201610353872A CN 107434391 A CN107434391 A CN 107434391A
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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
- 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
- C04B28/14—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 calcium sulfate 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
- 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
- C04B2111/00637—Uses not provided for elsewhere in C04B2111/00 as glue or binder for uniting building or structural 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
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
Abstract
A kind of water-fast bonding gypsum powder and preparation method thereof, wherein, the water-fast bonding gypsum powder includes hydrophobic material, water-retaining admixture, redispersable latex powder, cracking resistance powder, retarder and building gypsum plaster, wherein, on the basis of the weight of the building gypsum plaster, the content of the hydrophobic material is 0.2 1 weight %, the content of the water-retaining admixture is 0.04 0.8 weight %, the content of the redispersable latex powder is 0.001 0.08 weight %, the content of the cracking resistance powder is 0.05 0.6 weight %, the content of the retarder is 0.01 0.5 weight %.The preparation method includes building gypsum plaster and hydrophobic material, redispersable latex powder, cracking resistance powder, water-retaining admixture and retarder being mixed evenly.
Description
Technical field
The application relates to, but are not limited to a kind of bonding gypsum powder, in particular it relates to but be not limited to a kind of water-fast
Bonding gypsum powder.
Background technology
Bonding gypsum is the binding material that Thistle board is bonded in building construction process, universal at present
Use the bonding gypsum without water-proof function.However, because existing bonding gypsum is non-watertight, in air
Under the erosion of middle vapor, easily it is cracking, rise drum, bonding failure phenomena such as.
The content of the invention
This application provides a kind of water-fast bonding gypsum powder.
Water-fast bonding gypsum powder provided herein includes hydrophobic material, water-retaining admixture, redispersible
Latex powder, cracking resistance powder, retarder and building gypsum plaster, wherein, with the weight of the building gypsum plaster
On the basis of amount, the content of the hydrophobic material can be 0.2-1 weight %, the content of the water-retaining admixture
Can be 0.04-0.8 weight %, the content of the redispersable latex powder can be 0.001-0.08 weight %,
The content of the cracking resistance powder can be 0.05-0.6 weight %, and the content of the retarder can be
0.01-0.5 weight %.
In the application, term " cracking resistance powder " refers to that well known to a person skilled in the art can be used in
The material of cracking resistance.
In some embodiments, on the basis of the weight of the building gypsum plaster, the hydrophobic material
Content can be 0.3-0.5 weight %, and the content of the water-retaining admixture can be 0.1-0.8 weight %, institute
The content for stating redispersable latex powder can be 0.01-0.08 weight %, and the content of the cracking resistance powder is
0.1-0.5 weight %, the content of the retarder can be 0.05-0.1 weight %.
In some embodiments, the hydrophobic material can be organosilicon powder.
In some embodiments, the water-retaining admixture can be selected from methylcellulose, carboxymethyl cellulose
One or more in element, hydroxyethyl cellulose, hydroxypropyl methyl cellulose and hydroxypropyl methyl cellulose.
In some embodiments, the water-retaining admixture can be methylcellulose and/or carboxymethyl cellulose
Element.
In some embodiments, the redispersable latex powder can be natural plant gum powder and/or natural
Animal rubber powder.
In some embodiments, the natural plant gum powder can be vinyl acetate rubber powder.
In some embodiments, the cracking resistance powder can be lignocellulosic.
In some embodiments, the retarder can be phosphorus powder.
In some embodiments, the retarder can be powdered and soluble in water phosphorus powder.
Present invention also provides a kind of method for preparing above-mentioned water-fast bonding gypsum powder.
The method for preparing above-mentioned water-fast bonding gypsum powder provided herein is included building gypsum plaster with hating
Water material, redispersable latex powder, cracking resistance powder, water-retaining admixture and retarder are mixed evenly.
The application provide by building gypsum plaster and hydrophobic material, redispersable latex powder, cracking resistance powder,
Water-retaining admixture and retarder are mixed with special ratios, can be obtained and kept the basic performance of bonding gypsum
While, also with water-fast, cracking resistance, the water-fast cohesive stone that adhesion strength is high, environment-protecting and non-poisonous and other effects
Cream powder.Alternatively, when the hydrophobic material is organosilicon powder, with other each components with special ratios
Coordinate, water-fast effect preferably water-fast bonding gypsum powder can be obtained.
Embodiment
The embodiment of the application is described in detail below.It should be appreciated that this place is retouched
The embodiment stated is merely to illustrate and explained the application, is not limited to the application.
The application embodiment provides a kind of water-fast bonding gypsum powder, and the water-fast bonding gypsum powder includes
Hydrophobic material, water-retaining admixture, redispersable latex powder, cracking resistance powder, retarder and plaster of Paris
Powder, wherein, on the basis of the weight of the building gypsum plaster, the content of the hydrophobic material can be 0.2-1
Weight %, the content of the water-retaining admixture can be 0.04-0.8 weight %, the redispersable latex powder
Content can be 0.001-0.08 weight %, the content of the cracking resistance powder can be 0.05-0.6 weights
% is measured, the content of the retarder can be 0.01-0.5 weight %.
In the application embodiment, each component can preferably realize the purpose of the application within the above range.
In the application embodiment, on the basis of the weight of the building gypsum plaster, the hydrophobic material contains
Amount can be 0.3-0.5 weight %, and the content of the water-retaining admixture can be 0.1-0.8 weight %, described
The content of redispersable latex powder can be 0.01-0.08 weight %, and the content of the cracking resistance powder can be with
For 0.1-0.5 weight %, the content of the retarder can be 0.05-0.1 weight %.
In the application embodiment, the hydrophobic material can be the existing or conventional hydrophobic in this area
Material, as long as water-fast bonding gypsum powder can be made to obtain hydrophobic effect.Alternatively, the hydrophobic material
It can be organosilicon powder.When the hydrophobic material is organosilicon powder, with other each components with specific
Ratio coordinates, and can obtain water-fast effect preferably water-fast bonding gypsum powder.
In the application embodiment, the water-retaining admixture can be the existing or conventional guarantor in this area
Water hickener, as long as water-fast bonding gypsum powder can be made to obtain water-keeping thickening effect.Alternatively, it is described
Water-retaining admixture can be selected from methylcellulose, carboxymethyl cellulose, hydroxyethyl cellulose, carboxylic propyl group first
One or more in base cellulose and hydroxypropyl methyl cellulose.Alternatively, the water-retaining admixture can
Think methylcellulose and/or carboxymethyl cellulose.
In the application embodiment, the redispersable latex powder can be that this area is existing or conventional
Redispersable latex powder, as long as can be evenly dispersed in water-fast bonding gypsum powder and make resistance to after agitation
Water bonding gypsum powder obtains the effect for improving cohesive force.Alternatively, the redispersable latex powder can
Think natural plant gum powder and/or natural animal rubber powder.Alternatively, the natural plant gum powder can be vinegar
Sour ethene rubber powder.
In the application embodiment, the cracking resistance powder can be the existing or conventional energy in this area
The material of cracking resistance is enough in, as long as water-fast bonding gypsum powder can be made to obtain cracking resistance effect.It is optional
Ground, the cracking resistance powder can be lignocellulosic.
In the application embodiment, the retarder can be the existing or conventional retarder in this area,
As long as water-fast bonding gypsum powder can be made to obtain retarding effect.Alternatively, the retarder can be phosphorus
Powder.Alternatively, the retarder can be powdered and soluble in water phosphorus powder.When the retarder is
During phosphorus powder, coordinated with other each components with special ratios, retarding effect preferably water-fast bonding can be obtained
Land plaster.
Embodiment further provides a kind of method for preparing above-mentioned water-fast bonding gypsum powder, this method by the application
Including by building gypsum plaster and hydrophobic material, redispersable latex powder, cracking resistance powder, water-retaining admixture
It is mixed evenly with retarder.
The application embodiment provides building gypsum plaster and hydrophobic material, redispersable latex powder, resists and open
Split powder, water-retaining admixture and retarder to mix with special ratios, can obtain and keep bonding gypsum
While basic performance, also with water-fast, cracking resistance, adhesion strength it is high, environment-protecting and non-poisonous and other effects resistance to
Water bonding gypsum powder.Alternatively, when the hydrophobic material is organosilicon powder, with other each components with
Special ratios coordinate, and can obtain water-fast effect preferably water-fast bonding gypsum powder.
The preparation and performance test of bonding gypsum powder
In the examples below that, building gypsum plaster is the plaster of paris that Etuoke Banner Xin Hui gypsum sales department provides
Powder, other reagents are provided by Guangdong Longhu Technology Shares Co., Ltd..
Embodiment 1
By 1000g building gypsum plasters, 2g organosilicon powders, 0.4g hydroxypropyl methyl celluloses, 0.01g
Vinyl acetate rubber powder, 0.5g lignocellulosics and 0.1g phosphorus powders are added to mixer, stir.
Performance test is carried out to the water-fast bonding gypsum powder of preparation, investigate its water absorption rate, just, final setting time,
Rupture strength and compression strength, cohesive force, performance test methods are as follows：
1st, the calculating of water absorption rate：
Sample mass × 100% before water absorption rate=(sample mass before sample mass-water suction after water suction)/water suction.
2nd, the first, test of final setting time：
By the mass % amount water of consumptive use of water normal consistence 50, pour into agitator, weigh the resistance to of 200g preparations
Water bonding gypsum powder, is poured into agitator rapidly in 5 ", while starts stopwatch, uses stirring sheet immediately
Stirring, fast group are ground with stirring sheet in agitator, and mixing time is no less than 30 ".It will stir what is obtained
Slurry is poured into the ring moulds for coating demoulding oil, and bottom plate then is raised into about 10mm, vertical tremor 5 times
Afterwards, scrape off unnecessary slurry (whole process requirement is completed in 1 ').
The ring moulds for filling slurry are placed under the draw point of instrument together with bottom plate, make the surface of needle point and slurry firm
Good contact, and the distance for leaving ring moulds edge is more than 10mm.Fixed screw on rapid release lever, allows
Pin is freely inserted in slurry.It is repeated once every 30 ", slotting point should be changed every time, and pin is cleaned,
Alignment.
Record inserts the time undergone less than bottom plate to draw point, i.e., for the first time from sample and water contact start
For the first final setting time of sample；Record inserts slurry for the first time from sample and water contact start to draw point
Final setting time of the depth no more than the 1mm times, as sample undergone.Retest twice, most
Termination fruit takes the average value of measurement result twice, is accurate to 1 '.
3rd, the test of rupture strength and compression strength：
Tested according to method as defined in GB/T17671-1999.
4th, the test of tensile strength：
Tested according to method as defined in bonding gypsum professional standard JC/T1025-2007.
The performance test results：Prepared water-fast bonding gypsum powder is through adding water to stir, after construction simulation,
Water absorption rate is higher, the slight bleeding in surface, first final setting time it is slightly shorter (but meet as defined in professional standard just/
Final setting time), for example anti-folding/compression strength of other detection projects is satisfied by Industry code requirements, concrete outcome
Refer to table 1.
Embodiment 2
By 1000g building gypsum plasters, 10g organosilicon powders, 8g hydroxypropyl methyl celluloses, 0.8g vinegar
Sour ethene rubber powder, 6g lignocellulosics and 5g phosphorus powders are added to mixer, stir.
Performance test is carried out to the water-fast bonding gypsum powder of preparation according to the method in embodiment 1, performance is surveyed
Test result：After prepared water-fast bonding gypsum powder mixes with water, slurry shows slightly sticky, water conservation
Excellent performance, extend compared to the presetting period of the water-fast bonding gypsum powder of embodiment 1 and final setting time,
But Industry code requirements are satisfied by, sag resistance is excellent, and mobility is slightly worse, but does not influence construction simulation,
Anti- folding/compression strength detection data meet professional standard, are completely dried rear flawless, anti-cracking performance is very
Excellent, concrete outcome refers to table 1.
Embodiment 3
By 1000g building gypsum plasters, 8g organosilicon powders, 0.6g hydroxypropyl methyl celluloses, 0.2g vinegar
Sour ethene rubber powder, 1g lignocellulosics and 2g phosphorus powders are added to mixer, stir.
Performance test is carried out to the water-fast bonding gypsum powder of preparation according to the method in embodiment 1, performance is surveyed
Test result：It is slightly long the time required to when prepared water-fast bonding gypsum powder mixes with water, exist light
Microparticle agglomeration, but use is had substantially no effect on, construction simulation is not influenceed after stirring, just/final set
Time is slightly short, but meets Industry code requirements, and it is lower slightly to be completely dried rear adhesion strength, anti-folding/compression strength
Minimum value that is lower slightly but being all higher than Industry code requirements, water absorption rate is very low, and water resistance is excellent, specific knot
Fruit refers to table 1.
Embodiment 4
By 1000g building gypsum plasters, 8g organosilicon powders, 2.6g hydroxypropyl methyl celluloses, 0.3g vinegar
Sour ethene rubber powder, 2g lignocellulosics and 2g phosphorus powders are added to mixer, stir.
Performance test is carried out to the water-fast bonding gypsum powder of preparation according to the method in embodiment 1, performance is surveyed
Test result：After prepared water-fast bonding gypsum powder mixes with water, just/final setting time is longer than implementation
The water-fast bonding gypsum powder of example 3, just/final setting time is longer, but is satisfied by Industry code requirements, water-retaining property
Preferably, water resistance is excellent, and anti-folding/compression strength meets professional standard, and concrete outcome refers to table 1.
Embodiment 5
By 1000g building gypsum plasters, 3g organosilicon powders, 1.2g hydroxypropyl methyl celluloses, 0.8g vinegar
Sour ethene rubber powder, 4g lignocellulosics and 0.3g phosphorus powders are added to mixer, stir.
Performance test is carried out to the water-fast bonding gypsum powder of preparation according to the method in embodiment 1, performance is surveyed
Test result：After prepared water-fast bonding gypsum powder mixes with water, just/final setting time meets industry
Standard requirement, sag resistance can be very good with anti-cracking performance, and anti-folding/compression strength is satisfied by professional standard
It is required that concrete outcome refers to table 1.
Embodiment 6
By 1000g building gypsum plasters, 3g organosilicon powders, 1g hydroxypropyl methyl celluloses, 0.1g acetic acid
Ethene rubber powder, 1g lignocellulosics and 0.5g phosphorus powders are added to mixer, stir.
Performance test is carried out to the water-fast bonding gypsum powder of preparation according to the method in embodiment 1, performance is surveyed
Test result：Prepared water-fast bonding gypsum powder mixes with water, and after stirring, items detection data are full
Sufficient Industry code requirements, concrete outcome refer to table 1.
Embodiment 7
By 1000g building gypsum plasters, 5g organosilicon powders, 8g hydroxypropyl methyl celluloses, 0.5g acetic acid
Ethene rubber powder, 5g lignocellulosics and 1g phosphorus powders are added to mixer, stir.
Performance test is carried out to the water-fast bonding gypsum powder of preparation according to the method in embodiment 1, performance is surveyed
Test result：Prepared water-fast bonding gypsum powder mixes with water, after stirring, water retention highest, when long
Between place after can also be constructed, final setting time is partially long, but is satisfied by Industry code requirements, because making
With phosphorus powder, retarding effect is excellent, and anti-cracking performance and water resistance are more excellent, and concrete outcome refers to table 1.
Embodiment 8
By 1000g building gypsum plasters, 4g organosilicon powders, 6g hydroxypropyl methyl celluloses, 0.6g acetic acid
Ethene rubber powder, 3g lignocellulosics and 0.6g phosphorus powders are added to mixer, stir.
Performance test is carried out to the water-fast bonding gypsum powder of preparation according to the method in embodiment 1, performance is surveyed
Test result：Prepared water-fast bonding gypsum powder mixes with water, dilute thick substantially suitable after stirring, stirs
Mix smoothly, slurry is in paste, and blade coating is normal, and sag resistance is fine, and water-retaining property is strong, is relatively saved during smearing
Power.Intensity is higher after drying, does not ftracture, skin effect phenomenon, not dry linting, and flawless produces.Integral construction
Property is good, and concrete outcome refers to table 1.
Comparative example 1
By 1000g building gypsum plasters, 6g hydroxypropyl methyl celluloses, 0.6g vinyl acetates rubber powder, 3g
Lignocellulosic and 0.6g phosphorus powders are added to mixer, stir.
Performance test is carried out to the common bonding gypsum powder of preparation according to the method in embodiment 1, performance is surveyed
Test result：The water absorption rate of prepared common bonding gypsum powder is higher, there is cracking after construction, after the moisture absorption
, there is peeling obscission in dry linting, and concrete outcome refers to table 1.
Comparative example 2
1000g building gypsum plasters, 4g organosilicon powders, 6g hydroxypropyl methyl celluloses, 3g is wooden
Cellulose and 0.6g phosphorus powders are added to mixer, stir.
Performance test, performance test knot are carried out to the bonding gypsum powder of preparation according to the method in embodiment 1
Fruit：Prepared bonding gypsum powder mixes with water, particle agglomeration phenomenon in whipping process be present, is not easy
Stir, it is necessary to which long agitation can just reach construction requirement；It is completely dry after carrying out construction simulation
Cohesive force is poor after dry, and obscission easily occur in two contact surfaces after long-term placement, and concrete outcome refers to table
1。
Table 1
The professional standard of bonding gypsum powder is：Presetting period is not less than 25 minutes, and final setting time is not more than
120 minutes, rupture strength was not less than 5MPa, and compression strength is not less than 10MPa.
The water-fast bonding gypsum powder that the application preparation is can be seen that from embodiment 1-8 and comparative example 1-2 exists
There is relatively low water absorption rate, its water absorption rate is not higher than 5 weights while the basic performance for meeting bonding gypsum powder
Measure %.It is known to those skilled in the art that the water resistance of water-fast bonding gypsum powder can by its water absorption rate come
Characterize, (when usual water absorption rate is less than 5 weight %, glued when bonding gypsum powder has relatively low water absorption rate
The water resistance for tying land plaster is preferable), the bonding gypsum has preferably water-fast and cracking resistance effect.It can be seen that
It is high that the water-fast bonding gypsum powder that the application provides can obtain preferable water-fast, cracking resistance, adhesion strength
Effect.Simultaneously as the raw material used is all environment-protecting and non-poisonous raw material, the application can also obtain environmentally friendly nothing
The water-fast bonding gypsum powder of poison.
It will be understood by those within the art that in the range of technical scheme is not departed from,
When a little change, modification and the equivalent variations developed made using disclosed above technology contents
It is the equivalent embodiment of the application；Meanwhile all substantial technologicals according to the application are to above example institute
Change, modification and differentiation of any equivalent variations made etc. are in the model being defined by the claims of the application
In enclosing.
Claims (9)
1. a kind of water-fast bonding gypsum powder, the water-fast bonding gypsum powder includes hydrophobic material, water-keeping thickening
Agent, redispersable latex powder, cracking resistance powder, retarder and building gypsum plaster, wherein, built with described
On the basis of building the weight of land plaster, the content of the hydrophobic material is 0.2-1 weight %, the water-keeping thickening
The content of agent is 0.04-0.8 weight %, and the content of the redispersable latex powder is 0.001-0.08 weight %,
The content of the cracking resistance powder is 0.05-0.6 weight %, and the content of the retarder is 0.01-0.5 weights
Measure %.
2. water-fast bonding gypsum powder according to claim 1, wherein, with the building gypsum plaster
On the basis of weight, the content of the hydrophobic material is 0.3-0.5 weight %, the content of the water-retaining admixture
For 0.1-0.8 weight %, the content of the redispersable latex powder is 0.01-0.08 weight %, described anti-to open
The content for splitting powder is 0.1-0.5 weight %, and the content of the retarder is 0.05-0.1 weight %.
3. water-fast bonding gypsum powder according to claim 1 or 2, wherein, the hydrophobic material is
Organosilicon powder.
4. the water-fast bonding gypsum powder according to any one of claim 1-3, wherein, the water conservation
Thickener is selected from methylcellulose, carboxymethyl cellulose, hydroxyethyl cellulose, carboxylic propyl methocel
With the one or more in hydroxypropyl methyl cellulose.
5. the water-fast bonding gypsum powder according to any one of claim 1-4, wherein, it is described can be again
Dispersed latex powder is natural plant gum powder and/or natural animal rubber powder.
6. according to the water-fast bonding gypsum powder described in claim 5, wherein, the natural plant gum powder
For vinyl acetate rubber powder.
7. the water-fast bonding gypsum powder according to any one of claim 1-6, wherein, it is described anti-to open
It is lignocellulosic to split powder.
8. the water-fast bonding gypsum powder according to any one of claim 1-7, wherein, the slow setting
Agent is phosphorus powder.
9. a kind of method for preparing the water-fast bonding gypsum powder any one of claim 1-8, the party
Method is included building gypsum plaster and hydrophobic material, redispersable latex powder, cracking resistance powder, water-keeping thickening
Agent and retarder are mixed evenly.
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|---|---|---|---|---|
| CN108947440A (en) * | 2018-08-17 | 2018-12-07 | 佛山市禅城区诺高环保科技有限公司 | A kind of high cracking resistance land plaster |
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