CN110451908A - A kind of gypsum base putty and preparation method thereof of bottom surface unification - Google Patents
A kind of gypsum base putty and preparation method thereof of bottom surface unification Download PDFInfo
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- CN110451908A CN110451908A CN201910726650.7A CN201910726650A CN110451908A CN 110451908 A CN110451908 A CN 110451908A CN 201910726650 A CN201910726650 A CN 201910726650A CN 110451908 A CN110451908 A CN 110451908A
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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
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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
- 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
- C04B2111/2092—Resistance against biological degradation
Abstract
The embodiment of the invention discloses a kind of gypsum base putty of bottom surface unification, are made of according to parts by weight the following raw material: 40-50 parts of building gypsum plaster, 30-50 parts of dicalcium powder, 0.3-0.5 parts of water-retaining agent, 0.04-0.06 parts of starch ether, 0.01 part -0.1 part of retarder, 0.4-0.6 parts of granule of polyvinyl alcohol, 0.05-0.08 parts of air entraining agent, 0.03-0.06 parts of thixotropic agent and 0.02-0.04 parts of mould inhibitor；Further include a kind of preparation method, by additive preparation and the mixing with building gypsum plaster and dicalcium powder, finished product can be directly obtained by the mixing under mechanical room temperature；The present invention can be used for that bottom surface to be levelling and surface layer is smeared simultaneously, overcome and need to use the defect that different types of putty generates in existing putty, preparation process is pipeline system production technology, can be according to the aforementioned powder of lacquer putty for use on of setting condition batch automatic production.
Description
Technical field
The present embodiments relate to technical field of putty, and in particular to a kind of gypsum base putty of bottom surface unification and its preparation
Method.
Background technique
Present internal wall finishing construction procedure generally passes through bottom layer alignment putty and carries out bottom layer alignment, caulking compounds to wire casing
The repairing in area, surface layer putty batch scrape surface layer and smear investment precoat.In abovementioned steps mainly with bottom layer alignment and batch
It scrapes based on surface layer, because of the needs of engineering, it is however generally that material used in bottom and surface layer is different, although different
Area has certain difference, but bottom is usually to utilize gypsum plastering mortar made of gypsum, and surface layer is usually using double
Fly surface layer putty made of powder.
The material as used in bottom and surface layer is different, will there is associativity between layers during construction
Bad problem leads to hollowing and generation phenomena such as cracking.And it due to the difference of bottom and surface material, is also respectively present
Defect, such as existing gypsum base plastering mortar is due to using desulfurized gypsum in the majority, with the mating easily generation yellowing etc. afterwards of surface layer putty
Phenomenon, for another example existing interior wall surface layer putty is mostly not resistant to water.
Summary of the invention
For this purpose, the embodiment of the present invention provides a kind of gypsum base putty and preparation method thereof of bottom surface unification, it is existing to solve
The problems in technology.
To achieve the goals above, embodiments of the present invention provide the following technical solutions:
A kind of gypsum base putty of bottom surface unification, is made of the following raw material according to parts by weight:
40-50 parts of building gypsum plaster, 0.3-0.5 parts of water-retaining agent, 0.04-0.06 parts of starch ether, delays 30-50 parts of dicalcium powder
Solidifying 0.01 part -0.1 part of agent, 0.4-0.6 parts of granule of polyvinyl alcohol, 0.05-0.08 parts of air entraining agent, 0.03-0.06 parts of thixotropic agent and
0.02-0.04 parts of mould inhibitor.
As a preferred solution of the present invention, the building gypsum plaster is white land plaster, in the white land plaster
CaSO4·1/2H2The mass percent of O be more than or equal to 80%, Blue Whiteness be more than or equal to 80,0.2mm square hole screen tail over less than etc.
In 0, without hard block structure.
As a preferred solution of the present invention, the dicalcium powder using 98% or more purity calcite through crushing,
It is sieved and except the calcium carbonate powder that iron is handled, fineness is 250~325 mesh, Blue Whiteness is more than or equal to 80.
As a preferred solution of the present invention, the water-retaining agent is hydroxypropyl methyl cellulose sodium, and the retarder is
Animal protein, the air entraining agent are fatty alcohol sulfonate class powder, and the thixotropic agent is bentonite, in kaolin, attapulgite
Any one, the mould inhibitor be the loose powder class fungicide of click.
In addition, including the following steps: the present invention also provides a kind of gypsum base preparation method of putty of bottom surface unification
Step 100 stirs water-retaining agent, starch ether, granule of polyvinyl alcohol, air entraining agent, thixotropic agent, mould inhibitor in mixing machine
It mixes uniformly, it is spare to obtain gypsum base additive of putty；
Step 200 mixes dicalcium powder and retarder with the ratio of mass ratio 9:1 in another mixing machine, stirs evenly
Afterwards, it is spare to obtain slow setting agent addition agent；
Building gypsum and dicalcium powder are added in third mixing machine according to designated ratio and mix by step 300, and will be above-mentioned
Gypsum base additive of putty and slow setting agent addition agent are added in minimum ratio, and are uniformly mixed and are obtained gypsum base putty semi-finished product；
Step 400 carries out setting time test to gypsum base putty semi-finished product, corresponding according to setting time test result
The additive amount of retarder in regulating step 200, until setting time test meets construction requirement；
Step 500 packs the product batch production for regulating setting time to get gypsum base putty finished product is arrived.
As a preferred solution of the present invention, in step 100 by water-retaining agent, starch ether, granule of polyvinyl alcohol, bleed
Agent, thixotropic agent, mould inhibitor are stirred in a high pressure reaction kettle, adjust autoclave temperature and pressure, and pass through ultrasonic wave
Vibration handles to obtain gypsum base additive of putty；
Adjust the specific steps of autoclave temperature and pressure are as follows:
Step 101 raises the temperature to 50~64 DEG C by room temperature with the heating rate of 4~6 DEG C/min；
Step 102 is uniformly mixed after heating with the rate of 600~800 turns/min, after mixing thereto
Tap water is added to thick；
Step 103 carries out ultrasonic oscillation in thick mixture, and preliminary crush is carried out after earthquake mixing and is obtained
Additive.
As a preferred solution of the present invention, building gypsum plaster and dicalcium powder according to specified mixing be added in pulverizer into
Preliminary crush of row obtains bottom material.
As a preferred solution of the present invention, to tentatively crush be added in obtained bottom material gypsum base additive of putty and
Slow setting agent addition agent carries out ball milling, and is gradually added retarder during ball milling after mixing；
Tentatively crush the mixed method of bottom material and additive in step 300: heating air simultaneously passes through the air after heating
Preliminary crushing bottom material and additive are blown into mixing bunker after combination drying to concentrate again and are sent into ball mill, the Air Temperature after heating
Degree is 140~160 DEG C, and the moisture content of material is 5~10% after drying.
As a preferred solution of the present invention, gypsum base putty semi-finished product cooler is sent into change according to preset temperature
It is cooled down, and gypsum base putty semi-finished product after cooling is aged to obtain preform.
As a preferred solution of the present invention, the variation of preset temperature in cooling procedure specifically: after ball milling
Temperature is supported 2~3 hours at a temperature of powder of lacquer putty for use on raw material are maintained at 60~80 DEG C, then reduces the feeding temperature of temperature stage by stage to being aged room temperature,
The gradient for each reducing temperature stage by stage is 6~8 DEG C, and Aging Temperature is 38~45 DEG C, and digestion time is no less than 6 hours.
Embodiments of the present invention have the advantages that
Gypsum base prepared by the present invention as basic material, can be used for that bottom surface to be levelling and face using white gypsum simultaneously
Layer is smeared, and is overcome and is needed to use the defect that different types of putty generates in existing putty, and product of the invention is through excess temperature
Without polishing after supporting and being aged, it can directly criticize knife-band water and receive light, so that the metope effect of surface of wall effect and coated coating
Quite；In addition preparation process provided by the invention is pipeline system production technology, can be according to the batch-automated life that imposes a condition
It is antenatal to state powder of lacquer putty for use on.
Detailed description of the invention
It, below will be to embodiment party in order to illustrate more clearly of embodiments of the present invention or technical solution in the prior art
Formula or attached drawing needed to be used in the description of the prior art are briefly described.It should be evident that the accompanying drawings in the following description is only
It is merely exemplary, it for those of ordinary skill in the art, without creative efforts, can also basis
The attached drawing of offer, which is extended, obtains other implementation attached drawings.
Structure depicted in this specification, ratio, size etc., only to cooperate the revealed content of specification, for
Those skilled in the art understands and reads, and is not intended to limit the invention enforceable qualifications, therefore does not have technical
Essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size are not influencing the function of the invention that can be generated
Under effect and the purpose that can reach, should all still it fall in the range of disclosed technology contents obtain and can cover.
Fig. 1 is the flowage structure block diagram in embodiment of the present invention.
Specific embodiment
Embodiments of the present invention are illustrated by particular specific embodiment below, those skilled in the art can be by this explanation
Content disclosed by book is understood other advantages and efficacy of the present invention easily, it is clear that described embodiment is the present invention one
Section Example, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not doing
Every other embodiment obtained under the premise of creative work out, shall fall within the protection scope of the present invention.
As shown in Figure 1, the present invention provides a kind of gypsum base putty of bottom surface unification, according to parts by weight by the following raw material
Composition:
40-50 parts of building gypsum plaster, 0.3-0.5 parts of water-retaining agent, 0.04-0.06 parts of starch ether, delays 30-50 parts of dicalcium powder
Solidifying 0.01 part -0.1 part of agent, 0.4-0.6 parts of granule of polyvinyl alcohol, 0.05-0.08 parts of air entraining agent, 0.03-0.06 parts of thixotropic agent and
0.02-0.04 parts of mould inhibitor.
Wherein, the building gypsum plaster is white land plaster, CaSO in the white land plaster4·1/2H2The mass percent of O
More than or equal to 80%, Blue Whiteness is more than or equal to 80,0.2mm square hole screen and tails over less than or equal to 0, without hard block structure.
CaSO in land plaster4·1/2H2O is in mass percent >=80%, and in the case of 0.2mm square hole screen tails over≤0,
Intensity is higher, batch scrapes in construction smooth, does not have granular sensation.
The dicalcium powder using the calcite of 98% or more purity by crushing, sieving and the calcium carbonate handled except iron
Powder, fineness are 250~325 mesh, and Blue Whiteness is more than or equal to 80.
The water-retaining agent is hydroxypropyl methyl cellulose sodium, and the retarder is animal protein, and the air entraining agent is fat
Alcohol Sulfonates powder, the thixotropic agent are bentonite, kaolin, any one in attapulgite, and the mould inhibitor is click
Loose powder class fungicide.
The ingredient in formula is further explained in the present invention:
Dicalcium powder, it is raw material that abbreviation coarse whiting, which is with good calcite (98% or more calcium carbonate content), is milled through lime
Be machined to white powder, its main component is calcium carbonate, can reduce production cost, can also increase product toughness and
Intensity.
Air entraining agent, for the workability for improving concrete mix, water-retaining property and cohesiveness improve concrete flowability, In
The introducing in the process of mixing and stirring of concrete mix is largely uniformly distributed, is closed and the additive of stable micro-bubble, acts on
It is to improve the service performance of putty, improves construction feel.
Thixotropic agent can make glue have higher consistency when static after addition, become low consistency stream again under external force
The substance of body will not generate sagging caused metope not after guaranteeing the upper wall of slurry thickness batch because of self gravity
It is flat, while low consistency slurry can be become during criticizing and scraping, it can more easily criticize and scrape.
Starch ether, since the etherification of starch improves viscosity stability, and ehter bond is not easy to send out under strongly alkaline conditions
Unboiled water solution is suitable for such as mortar, plastering building dry blend, and starch ether is used in building dry blend, can assign higher thickening
Property, stronger structural, sag resistance and ease for operation.
Water-retaining agent uses super absorbent resin, it is a kind of functional polymer material that water absorbing capacity is especially strong.
Retarder is the additive of a kind of gypsum hydration rate and the heat of hydration, extension setting time, in order to extend
The hydration and hardening time of mortar, fresh mortar is enable to keep plasticity in a long time, thus when adjusting the condensation of fresh mortar
Between.
Granule of polyvinyl alcohol, the material main function are hard after wall drying on the adhesive property and product for increase product
Degree guarantees on product after wall phenomena such as being not in hollowing, and the toxicity of the raw material generates body after mainly sucking human body
Harm, but since the additive amount of raw material incorporation product is few, and odorlessness, it will not be inhaled into human body, and directly contact skin
Harm will not be generated, after adding wall waterborne, which will not play with moisture evaporation, but everywhere with water translocation to product
Increase the effect of intensity.
Product of the invention is used on interior wall, will not be contacted substantially with water, and the dissolved efficiency of the raw material and cold water
It is extremely low, therefore the raw material can be played while increasing intensity under normal circumstances and will not be migrated into air and generate to human body
Harm.
Mould inhibitor is a kind of high molecular material additive that can inhibit fungus growth and kill mould, can make macromolecule material
Material keeps good appearance and physical mechanical property from fungi erosion.
In addition, the present invention also provides a kind of gypsum base preparation method of putty of bottom surface unification, including two kinds of embodiments.
Embodiment 1:
A kind of gypsum base preparation method of putty of bottom surface unification, includes the following steps:
Step 100 stirs water-retaining agent, starch ether, granule of polyvinyl alcohol, air entraining agent, thixotropic agent, mould inhibitor in mixing machine
It mixes uniformly, it is spare to obtain gypsum base additive of putty；
Step 200 mixes dicalcium powder and retarder with the ratio of mass ratio 9:1 in another mixing machine, stirs evenly
Afterwards, it is spare to obtain slow setting agent addition agent；
Building gypsum and dicalcium powder are added in third mixing machine according to designated ratio and mix by step 300, and will be above-mentioned
Gypsum base additive of putty and slow setting agent addition agent are added in minimum ratio, and are uniformly mixed and are obtained gypsum base putty semi-finished product；
Step 400 carries out setting time test to gypsum base putty semi-finished product, corresponding according to setting time test result
The additive amount of retarder in regulating step 200, until setting time test meets construction requirement；
Step 500 packs the product batch production for regulating setting time to get gypsum base putty finished product is arrived.
The content as documented by embodiment 1 it is found that product provided in the present invention be not necessarily to any complexity processing, including
Major ingredient building gypsum and dicalcium powder and auxiliary agent class material only need to carry out mechanical mixture uniformly, in deep processing without
Ball milling is needed, without temperature regulation is carried out, all are all carried out at normal temperature.Preparation method of the invention, it is only necessary to simple machine
Tool stirring, being uniformly mixed can be obtained finished product.
The effect of powder of lacquer putty for use on is mainly realized by the combined effect in formula in the present embodiment, at the same time,
Simplify processing technology, the preparation of powder of lacquer putty for use on finished product can be realized on the basis of simplifying technique.
Embodiment 2:
A kind of gypsum base preparation method of putty of bottom surface unification, includes the following steps:
By water-retaining agent, starch ether, granule of polyvinyl alcohol, air entraining agent, thixotropic agent, mould inhibitor in reaction under high pressure in step 100
It is stirred in kettle, adjusts autoclave temperature and pressure, and handle to obtain the addition of gypsum base putty by vibration of ultrasonic wave
Agent.
By changing the temperature and pressure condition in mixed process, keep its each ingredient more abundant in mixing.It adjusts
The specific steps of whole autoclave temperature and pressure are as follows:
Step 101 raises the temperature to 50~64 DEG C by room temperature with the heating rate of 4~6 DEG C/min；
Step 102 is uniformly mixed after heating with the rate of 600~800 turns/min, after mixing thereto
Tap water is added to thick；
Step 103 carries out ultrasonic oscillation in thick mixture, and preliminary crush is carried out after earthquake mixing and is obtained
Additive.
In step 101 and step 102, by being rapidly heated to specified temperature, the work of each ingredient is not influenced
Property, there is better compatibility between ingredient each after heating, then mixing can be significantly improved under the action of high-speed stirred
Effect, and tap water is added upon mixing and cools down and is formed thick, play the purpose of fixed mixing achievement.
In thick rear progress ultrasonic oscillation, which primarily serves two effects:
First, being that ultrasonic wave effect plays the role of concussion to thick liquid, to promote the mixing between each ingredient, In
Further promote being mutually mixed for each ingredient to a certain extent；
Second, evaporating the moisture wherein mixed while being earthquake, water content is reduced, so as to subsequent between other compositions
Mixing.
Step 200 mixes dicalcium powder and retarder with the ratio of mass ratio 9:1 in another mixing machine, stirs evenly
Afterwards, it is spare to obtain slow setting agent addition agent.
Step 300, building gypsum plaster and dicalcium powder are added according to specified mixing to carry out tentatively crushing on earth in pulverizer
Material is added gypsum base additive of putty and slow setting agent addition agent to tentatively crushing, ball milling is carried out after mixing in obtained bottom material, and
Retarder is gradually added during ball milling.
Tentatively crush the mixed method of bottom material and additive in step 300: heating air simultaneously passes through the air after heating
Preliminary crushing bottom material and additive are blown into mixing bunker after combination drying to concentrate again and are sent into ball mill, the Air Temperature after heating
Degree is 140~160 DEG C, and the moisture content of material is 5~10% after drying.By the air of heating to material during ball milling
It is dried, avoids directly heating the adverse effect that material generates material component.
Gypsum base putty semi-finished product are sent into cooler to cool down according to preset temperature variation, and by gypsum after cooling
Base putty semi-finished product are aged to obtain preform.
The variation of preset temperature in cooling procedure specifically: the powder of lacquer putty for use on raw material after ball milling are maintained at 60~80 DEG C
At a temperature of temperature support 2~3 hours, then reduce the feeding temperature of temperature stage by stage to room temperature is aged, the gradient for each reducing temperature stage by stage is 6
~8 DEG C, Aging Temperature is 38~45 DEG C, and digestion time is no less than 6 hours.
In the present embodiment, it is supported by the temperature of different phase temperature, changes the different ageing degree of raw material, have it
Transition ingredient can adapt to the requirement of bottom and surface layer during use, and have different lifes between these two
Phenomena such as Transition Materials of material are not in cracking improves the applicability and mechanical property of product.
Step 400 carries out setting time test to gypsum base putty semi-finished product, corresponding according to setting time test result
The additive amount of retarder in regulating step 200, until setting time test meets construction requirement.
In the present embodiment, in the retarder for being most initially added into bottom line, being normally carried out for mixed process is ensured, with
This obtains setting time, and adjust retarder by the detection of reaction type simultaneously by way of test in step 400
Additional amount, to guarantee that the additional amount of retarder is in most suitable ratio always, to improve the quality of product.
Step 500 packs the product batch production for regulating setting time to get gypsum base putty finished product is arrived.
Although above having used general explanation and specific embodiment, the present invention is described in detail, at this
On the basis of invention, it can be made some modifications or improvements, this will be apparent to those skilled in the art.Therefore,
These modifications or improvements without departing from theon the basis of the spirit of the present invention are fallen within the scope of the claimed invention.
Claims (10)
1. a kind of gypsum base putty of bottom surface unification, which is characterized in that be made of according to parts by weight the following raw material:
40-50 parts of building gypsum plaster, 30-50 parts of dicalcium powder, 0.3-0.5 parts of water-retaining agent, 0.04-0.06 parts of starch ether, retarder
0.01 part -0.1 part, 0.4-0.6 parts of granule of polyvinyl alcohol, 0.05-0.08 parts of air entraining agent, 0.03-0.06 parts of thixotropic agent and mould proof
0.02-0.04 parts of agent.
2. a kind of gypsum base putty of bottom surface unification according to claim 1, which is characterized in that the building gypsum plaster is
White land plaster, CaSO in the white land plaster4·1/2H2The mass percent of O is more than or equal to 80%, and Blue Whiteness is more than or equal to
80,0.2mm square hole screens are tailed over less than or equal to 0, without hard block structure.
3. gypsum base putty is unified in a kind of bottom surface according to claim 1, which is characterized in that the dicalcium powder uses purity
For 98% or more calcite by crushing, being sieved and except the calcium carbonate powder that iron is handled, fineness is 250~325 mesh, blue light
Whiteness is more than or equal to 80.
4. a kind of gypsum base putty of bottom surface unification according to claim 1, which is characterized in that the water-retaining agent is hydroxypropyl
Ylmethyl sodium cellulosate, the retarder are animal protein, and the air entraining agent is fatty alcohol sulfonate class powder, the thixotropic agent
For any one in bentonite, kaolin, attapulgite, the mould inhibitor is the loose powder class fungicide of click.
5. a kind of gypsum base preparation method of putty of bottom surface unification, which comprises the steps of:
Step 100 stirs water-retaining agent, starch ether, granule of polyvinyl alcohol, air entraining agent, thixotropic agent, mould inhibitor in mixing machine
It is even, it is spare to obtain gypsum base additive of putty；
Step 200 mixes dicalcium powder and retarder with the ratio of mass ratio 9:1 in another mixing machine, after mixing evenly, obtains
It is spare to slow setting agent addition agent；
Building gypsum and dicalcium powder are added in third mixing machine according to designated ratio and mix by step 300, and by above-mentioned gypsum
Base additive of putty and slow setting agent addition agent are added in minimum ratio, and are uniformly mixed and are obtained gypsum base putty semi-finished product；
Step 400 carries out setting time test to gypsum base putty semi-finished product, according to the corresponding adjusting of setting time test result
The additive amount of retarder in step 200, until setting time test meets construction requirement；
Step 500 packs the product batch production for regulating setting time to get gypsum base putty finished product is arrived.
6. a kind of gypsum base preparation method of putty of bottom surface unification according to claim 5, which is characterized in that
In step 100 by water-retaining agent, starch ether, granule of polyvinyl alcohol, air entraining agent, thixotropic agent, mould inhibitor in autoclave
In be stirred, adjust autoclave temperature and pressure, and handle to obtain gypsum base additive of putty by vibration of ultrasonic wave；
Adjust the specific steps of autoclave temperature and pressure are as follows:
Step 101 raises the temperature to 50~64 DEG C by room temperature with the heating rate of 4~6 DEG C/min；
Step 102 is uniformly mixed after heating with the rate of 600~800 turns/min, is being added thereto after mixing
Tap water is to thick；
Step 103 carries out ultrasonic oscillation in thick mixture, and preliminary crush is carried out after earthquake mixing and is added
Agent.
7. a kind of gypsum base preparation method of putty of bottom surface unification according to claim 5, which is characterized in that building gypsum
Powder and dicalcium powder, which are added in pulverizer tentatively crush according to specified mixing, obtains bottom material.
8. a kind of gypsum base preparation method of putty of bottom surface unification according to claim 7, which is characterized in that preliminary powder
Gypsum base additive of putty and slow setting agent addition agent are added in broken obtained bottom material, ball milling is carried out after mixing, and in the mistake of ball milling
Retarder is gradually added in journey；
Tentatively crush the mixed method of bottom material and additive in step 300: heating air simultaneously will be first by the air after heating
Step crushes bottom material and additive is blown into mixing bunker after combination drying to concentrate again and be sent into ball mill, and the air themperature after heating is
140~160 DEG C, the moisture content of material is 5~10% after drying.
9. a kind of gypsum base preparation method of putty of bottom surface unification according to claim 1, which is characterized in that by gypsum base
Putty semi-finished product are sent into cooler and are cooled down according to preset temperature variation, and gypsum base putty semi-finished product after cooling are carried out
Ageing obtains preform.
10. a kind of gypsum base preparation method of putty of bottom surface unification according to claim 9, which is characterized in that in cooling
The variation of preset temperature in the process specifically: temperature supports 2~3 at a temperature of the powder of lacquer putty for use on raw material after ball milling are maintained at 60~80 DEG C
Hour, then the feeding temperature of temperature is reduced stage by stage to room temperature is aged, the gradient for each reducing temperature stage by stage is 6~8 DEG C, Aging Temperature
It is 38~45 DEG C, and digestion time is no less than 6 hours.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111978777A (en) * | 2020-08-31 | 2020-11-24 | 龙牌粉料(太仓)有限公司 | Preparation method of gypsum-based putty integrating bottom surface and bottom surface |
| CN114195473A (en) * | 2021-12-27 | 2022-03-18 | 中国建筑第五工程局有限公司 | Gypsum-based lightweight plastering material and preparation method thereof |
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| CN111978777A (en) * | 2020-08-31 | 2020-11-24 | 龙牌粉料(太仓)有限公司 | Preparation method of gypsum-based putty integrating bottom surface and bottom surface |
| CN114195473A (en) * | 2021-12-27 | 2022-03-18 | 中国建筑第五工程局有限公司 | Gypsum-based lightweight plastering material and preparation method thereof |
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| CN110451908B (en) | 2022-02-22 |
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