CN110482984A - A kind of preparation process of water proof type fibrous plaster - Google Patents
A kind of preparation process of water proof type fibrous plaster Download PDFInfo
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- CN110482984A CN110482984A CN201910751574.5A CN201910751574A CN110482984A CN 110482984 A CN110482984 A CN 110482984A CN 201910751574 A CN201910751574 A CN 201910751574A CN 110482984 A CN110482984 A CN 110482984A
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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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/02—Treatment
- C04B20/023—Chemical treatment
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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
- C04B28/142—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 containing synthetic or waste calcium sulfate cements
- C04B28/144—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 containing synthetic or waste calcium sulfate cements the synthetic calcium sulfate being a flue gas desulfurization product
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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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
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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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
- C04B41/5007—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with salts or salty compositions, e.g. for salt glazing
- C04B41/5014—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with salts or salty compositions, e.g. for salt glazing containing sulfur in the anion, e.g. sulfides
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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
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
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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
- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Ceramic Engineering (AREA)
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- Structural Engineering (AREA)
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- General Chemical & Material Sciences (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention mainly relates to technical field of refractory materials more particularly to a kind of preparation processes of water proof type fibrous plaster, comprising the following steps: (one) stock, (two) stirring, (three) molding, (four) spraying, (four) spraying；Preparation process of the invention is simple, it is low in cost, meet environmental requirement, by being improved and optimizated to raw materials for production and technique, so that plasterboard has excellent waterproof moisture resistivity, structure is also more closely knit, and the mechanical strength of plasterboard is also increased, thus plasterboard will not easily buckling deformation, be also not susceptible to fall off；Due to the raising of waterproof anti-moisture performance, the service life of plasterboard is also extended to a certain extent, is suitable for promoting and applying.
Description
Technical field
The invention mainly relates to decorative materials technology more particularly to a kind of preparation works of water proof type fibrous plaster
Skill.
Background technique
Gypsum is a kind of common inorganic gel construction material, belongs to air hardening cementitious materials, is three big cementing material (stones
One of cream, cement, lime), long ago just it is already used to as construction material.Compared with other construction materials, gypsum and
Its product has moulding process simple, and material production energy consumption is low, and raw material sources are extensive, good decorating effect, free from environmental pollution etc.
Plurality of advantages is applied to various industries.Due to containing mass crystallization water in gypsum, when product meets fire, gypsum sloughs crystallization
Water has the function of fire-retardant.The presence of a large amount of micropores, makes its heat insulating ability, sound absorption properties, hygroscopicity is preferable, quilt in gypsum hardenite
It is known as being green wall material.
Fibrous plaster is one of numerous plasterings, and it with building gypsum plaster is main that fibrous plaster, which is one kind,
Raw material, using various fibers as a kind of building panel of reinforcing material.Fibrous plaster has special sound-absorbing, thermally conductive, saturating
The performances such as gas can be used as non-ignitable construction material, and the inner wall for drying house and cabin is fitted up, and siding, ceiling are hung as between
The component on top and movable dwellings, it is widely used.But still there are some disadvantages, such as waterproofness for some conventional fibrous plasters
Difference, as humidity increases, loss of strength be increased dramatically, while easily buckling deformation or be fallen off.
A kind of preparation method of high-intensity fiber plasterboard as disclosed in existing patent document CN201710974299.4, it is first
Straw is first cut into short stalk, and carries out steam blasting, then by steam explosion crushed aggregates of straw and activated yeast mixture mixed fermentation, hair is made
Ferment mixed liquor, then fermentation mixed liquor and quick lime are stirred rear sealing and standing, obtains lime slurry, then by ardealite, building
After land plaster, lime slurry and water are uniformly mixed, injection molding, cold pressing, solidification, demoulding are made slab, and are sprayed with the concentrated sulfuric acid
Slab, then autoclave curing is carried out, then successively through carbonization, washing and drying to get high-intensity fiber plasterboard.Though the hair
The bright compression strength for improving fibrous plaster, but fibrous plaster does not have waterproofness.
Summary of the invention
In order to make up the defect of prior art, the object of the present invention is to provide a kind of preparation works of water proof type fibrous plaster
Skill, comprising the following steps:
(1) it stocks up:
(1) in parts by weight: weigh 20~35 portions of modified starches, 18~22 parts of modifying aspen fibers by using silicon, 2~5 parts of retarder,
0.6~1.4 part of water-reducing agent and 20~30 parts of water and being put into hydrabrusher stir into raw material slurry, then by raw material stock pump pan feeding
It starches spare in conservation tank；
(2) 0.8~1.1 part of foaming agent is added in 60~70 parts of water, is pumped into foaming agent storage after stirring evenly obtained expanding foam solution
It is spare in standby tank；
(3) 85~110 parts of desulfurization gypsum powders and 2.2~2.7 parts of coagulant are mixed, after mixing by promoting conveying
It is spare that equipment enters feed bin；
(2) it stirs: the raw material slurry in slurry conservation tank being successively pumped into blender, foaming agent uses in foaming agent conservation tank
Dynamic foaming device importing blender, land plaster and coagulant enter blender using feeding structure, then in the mixed of blender
Cooperate lower obtained calcium plaster；
(3) it forms: above-mentioned calcium plaster being added in mold, then mold is transferred in baking oven, in 55~65 DEG C of at a temperature of drying
2~3h is demoulded and plasterboard green body is made then by mold cooled to room temperature；
(4) it sprays: after weighing 8~10 parts of methyl silicon sodium alcoholates and 6~8 parts of aluminum aluminum sulfate mixed grindings, adding 10~12 parts of first
Base silicone oil is mixed, and waterproofing slurry is obtained after stirring, and the positive and negative surface of Xiang Shangshu plasterboard green body respectively sprays one layer of waterproofing slurry,
It puts in baking oven and is dried again after spraying；
(5) trimming is modified: by the plasterboard green body after spraying after trimming is modified, it can be prepared by water-resistant type fibrous plaster,
It tests to product, is put in storage after the assay was approved again.
Preferably, in the step (1) modifying aspen fibers by using silicon preparation process are as follows:
(1) 50~100 parts of water are first added into reaction kettle, 0.6~1.2 part of alkyl phenol is added into container under stirring conditions
Polyoxyethylene ether is simultaneously emulsified, and after the mixed liquor after emulsification is then heated to 60~70 DEG C, adds 10~15 parts of tristearin
Acid, which is simultaneously stirred to complete, to be melted, then to containing being added 10~12 parts of calcium hydroxide powder in stearic mixed liquor, stirring 2~
Generate milky thick liquid after 5min after 20~30min of insulation reaction again；
(2) 5~8 parts of aspen fibers by using silicon are chosen again is placed in above-mentioned milky thick liquid, after being stirred to react 30~50min, filtering, water
It washes and the modifying aspen fibers by using silicon can be obtained, further preferably the partial size of modifying aspen fibers by using silicon is 20~40 mesh.
Preferably, in the step (1) modified starch preparation process are as follows:
(1) 50~70 parts of ethyl acetate stirrings are added into 18~30 parts of native starch, starch suspension is made, then add again
Enter 0.4~0.6 part of ethylenediamine and stirs 20~40min at a temperature of 60 DEG C；
(2) 3~5 parts of succinic anhydrides are then added dropwise while stirring, continuation filters to obtain solids after insulated and stirred, stirring again,
Freeze it is dry after continue to grind solids, obtain the modified starch.
Preferably, the native starch is selected from cornstarch, starch from sweet potato, tapioca, potato starch, wheat and forms sediment
Any one in powder, bean starch or sorghum starch.
Preferably, retarder is polycarboxylate, sodium citrate, sodium carboxymethylcellulose, carboxyethyl in the step (1)
One of cellulose or a variety of mixing；Water-reducing agent is calcium lignosulfonate, Sodium Polyacrylate, any one in sulfamic acid sodium
Kind；Foaming agent is lauryl sodium sulfate, sodium sulfate of polyethenoxy ether of fatty alcohol, any one in α-sodium olefin sulfonate；Promote
Solidifying agent is one of triethanolamine, magnesium fluosilicate, zinc fluosilicate, calcium oxide, aluminum sulfate or a variety of mixing.
Preferably, the revolving speed of blender is 400~600r/min in the step (2), and mixing time is 40~60min.
Preferably, the size of mold is the mm × 40 of 2400mm × 1200 mm in the step (3).
Preferably, coating thickness is 0.3~0.5mm in the step (4), and drying temperature is 55~65 DEG C, drying time
For 1~2h.
The mechanism of action: with the enhancing of environmental consciousness, people gradually recognize the importance of recyclable organism material, fine
The reinforcing fiber in plasterboard is tieed up also from synthetic fibers to biomass fiber transition, there is better environment and economic benefit, because
This present invention selects very common aspen fibers by using silicon, but if not being modified to aspen fibers by using silicon, surface can contain great amount of hydroxy group
Polar group, intramolecular and intermolecular there are very strong hydrogen bond action have between stronger polarity and hygroscopicity, with plaster matrix
Interface compatibility and cohesiveness it is very poor, while only by addition aspen fibers by using silicon physical method can not increase substantially fiber
The intensity of plasterboard.Therefore, the present invention generates calcium stearate using stearic acid and calcium hydroxide reaction, and calcium stearate is in alkyl phenol
It can be uniformly dispersed in mixed liquor under the emulsification of polyoxyethylene ether, peptizaiton, the milky thick liquid of formation has nothing
The characteristic of machine and organic matter, and then aspen fibers by using silicon can be modified, the surface polarity of aspen fibers by using silicon can be effectively reduced, improve and dredge
It is aqueous, the interface compatibility between plaster matrix is improved, while milky thick liquid itself is also excellent with waterproof hydrophobic
Point；When preparing fibrous plaster, the modifying aspen fibers by using silicon being added in raw material, so that the crystallization degree of plaster matrix is mentioned
The mechanical strength of height, plasterboard is related with the quantity of gypsum crystal grain and size, and crystallinity raising means gypsum board structure more
Closely knit, intensity is higher.In addition, waterproofing slurry is configured using methyl silicon sodium alcoholate, methyl silicon sodium alcoholate etc. after gypsum sheet metal forming, and
Waterproofing slurry is sprayed into the positive and negative surface of plasterboard green body, to can be further improved the waterproofness of plasterboard.
It is low in cost the utility model has the advantages that preparation process of the invention is simple, meet environmental requirement, by raw materials for production and
Technique improves and optimizates, so that plasterboard has excellent waterproof moisture resistivity, structure is also more closely knit, and the mechanics of plasterboard
Intensity is also increased, thus plasterboard will not easily buckling deformation, be also not susceptible to fall off；Due to waterproof anti-moisture performance
Raising, also extend the service life of plasterboard to a certain extent, be suitable for promote and apply.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
Needed for having in technical description；Attached drawing to be used is briefly described.It should be evident that the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is process flow chart of the invention；
Fig. 2 is influence of the content of the invention for testing modifying aspen fibers by using silicon in 3 to the water absorption rate of fibrous plaster.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention,
Technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is the present invention one
Divide embodiment, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making
Every other embodiment obtained, shall fall within the protection scope of the present invention under the premise of creative work.
Embodiment 1
A kind of preparation process of water proof type fibrous plaster, comprising the following steps:
(1) it stocks up:
(1) in parts by weight: weighing 20 portions of modified starches, 18 parts of modifying aspen fibers by using silicon, 2 parts of sodium citrates, 0.6 part of lignin
Sulfoacid calcium and 20~30 parts of water and being put into hydrabrusher stir into raw material slurry, then enter raw material stock pump in slurry conservation tank
It is spare；
The wherein preparation process of modifying aspen fibers by using silicon are as follows:
1. 50 parts of water are first added into reaction kettle, 0.6 part of alkyl phenol polyoxyethylene ether is added into container under stirring conditions
And emulsified, after the mixed liquor after emulsification is then heated to 60 DEG C, adds 10 parts of stearic acid and stirs to complete and melt,
Then raw after insulation reaction 20min again to containing 10 parts of calcium hydroxide powder are added in stearic mixed liquor, stirring after 2min
At milky thick liquid；
2. choosing 6 parts of aspen fibers by using silicon again is placed in above-mentioned milky thick liquid, after being stirred to react 30min, filtering, washing can be obtained
To modifying aspen fibers by using silicon, further preferably the partial size of modifying aspen fibers by using silicon is 20 mesh；
The preparation process of modified starch are as follows:
1. 50 parts of ethyl acetate stirrings are added into 18 parts of cornstarch is made starch suspension, 0.4 part of second is then added
Diamines stirs 20min at a temperature of 60 DEG C；
2. and then 3 parts of succinic anhydrides of dropwise addition, continuation filter to obtain solids after insulated and stirred, stirring again while stirring, freeze
Continue to grind solids after dry, obtains modified starch.
(2) 0.8 part of lauryl sodium sulfate is added in 60 parts of water, is pumped into foaming agent after stirring evenly obtained expanding foam solution
It is spare in conservation tank；
(3) 85 parts of desulfurization gypsum powders and 2.2 parts of triethanolamines are mixed, is entered after mixing by promoting conveying equipment
Feed bin is spare；
(2) it stirs: the raw material slurry in slurry conservation tank being successively pumped into blender, foaming agent uses in foaming agent conservation tank
Dynamic foaming device importing blender, land plaster and coagulant enter blender using feeding structure, then in the mixed of blender
Cooperate lower obtained calcium plaster, wherein the revolving speed of blender is 400r/min, mixing time 40min；
(3) form: above-mentioned calcium plaster is added having a size of 2400mm × mold of the mm of 1200 mm × 40 in, then mold turned
Enter in baking oven, demoulds obtained plasterboard green body then by mold cooled to room temperature in 55 DEG C of at a temperature of drying 2h；
(4) it sprays: after weighing 8 parts of methyl silicon sodium alcoholates and 6 parts of aluminum aluminum sulfate mixed grindings, adding 10 parts of methyl-silicone oil mixing
Stirring, obtains waterproofing slurry, the positive and negative surface of Xiang Shangshu plasterboard green body respectively sprays one layer of waterproofing slurry, puts again after spraying after stirring
It is dried in baking oven, wherein coating thickness is 0.3mm, and drying temperature is 55 DEG C, drying time 1h；
(5) trimming is modified: by the plasterboard green body after spraying after trimming is modified, it can be prepared by water-resistant type fibrous plaster,
It tests to product, is put in storage after the assay was approved again.
Embodiment 2
A kind of preparation process of water proof type fibrous plaster, comprising the following steps:
(1) it stocks up:
(1) in parts by weight: weighing 27 portions of modified starches, 20 parts of modifying aspen fibers by using silicon, 4 parts of sodium carboxymethylcelluloses, 0.9 part
Sulfamic acid sodium and 25 parts of water and being put into hydrabrusher stir into raw material slurry, then enter raw material stock pump in slurry conservation tank
It is spare；
The wherein preparation process of modifying aspen fibers by using silicon are as follows:
1. 70 parts of water are first added into reaction kettle, 0.8 part of alkyl phenol polyoxyethylene ether is added into container under stirring conditions
And emulsified, after the mixed liquor after emulsification is then heated to 65 DEG C, adds 12 parts of stearic acid and stirs to complete and melt,
Then raw after insulation reaction 25min again to containing 11 parts of calcium hydroxide powder are added in stearic mixed liquor, stirring after 4min
At milky thick liquid；
2. choosing 7 parts of aspen fibers by using silicon again is placed in above-mentioned milky thick liquid, after being stirred to react 40min, filtering, washing can be obtained
To modifying aspen fibers by using silicon, further preferably the partial size of modifying aspen fibers by using silicon is 30 mesh；
The preparation process of modified starch are as follows:
1. 60 parts of ethyl acetate stirrings are added into 23 parts of starch from sweet potato is made starch suspension, 0.5 part of second is then added
Diamines stirs 30min at a temperature of 60 DEG C；
2. and then 4 parts of succinic anhydrides of dropwise addition, continuation filter to obtain solids after insulated and stirred, stirring again while stirring, freeze
Continue to grind solids after dry, obtains modified starch.
(2) 0.9 part of sodium sulfate of polyethenoxy ether of fatty alcohol is added in 65 parts of water, is pumped after stirring evenly obtained expanding foam solution
Enter spare in foaming agent conservation tank；
(3) 102 parts of desulfurization gypsum powders and 2.4 parts of zinc fluosilicates are mixed, after mixing through promotion conveying equipment into
It is spare to enter feed bin；
(2) it stirs: the raw material slurry in slurry conservation tank being successively pumped into blender, foaming agent uses in foaming agent conservation tank
Dynamic foaming device importing blender, land plaster and coagulant enter blender using feeding structure, then in the mixed of blender
Cooperate lower obtained calcium plaster, wherein the revolving speed of blender is 500r/min, mixing time 50min；
(3) form: above-mentioned calcium plaster is added having a size of 2400mm × mold of the mm of 1200 mm × 40 in, then mold turned
Enter in baking oven, demoulds obtained plasterboard green body then by mold cooled to room temperature in 60 DEG C of at a temperature of drying 3h；
(4) it sprays: after weighing 9 parts of methyl silicon sodium alcoholates and 7 parts of aluminum aluminum sulfate mixed grindings, adding 11 parts of methyl-silicone oil mixing
Stirring, obtains waterproofing slurry, the positive and negative surface of Xiang Shangshu plasterboard green body respectively sprays one layer of waterproofing slurry, puts again after spraying after stirring
It is dried in baking oven, wherein coating thickness is 0.4mm, and drying temperature is 60 DEG C, drying time 1h；
(5) trimming is modified: by the plasterboard green body after spraying after trimming is modified, it can be prepared by water-resistant type fibrous plaster,
It tests to product, is put in storage after the assay was approved again.
Embodiment 3
A kind of preparation process of water proof type fibrous plaster, comprising the following steps:
(1) it stocks up:
(1) in parts by weight: weighing 35 portions of modified starches, 22 parts of modifying aspen fibers by using silicon, 5 parts of sodium carboxymethylcelluloses, 1.4 parts
Sodium Polyacrylate and 30 parts of water and being put into hydrabrusher stir into raw material slurry, then enter raw material stock pump in slurry conservation tank
It is spare；
The wherein preparation process of modifying aspen fibers by using silicon are as follows:
1. 100 parts of water are first added into reaction kettle, 1.2 parts of alkyl phenol polyoxyethylene ether are added into container under stirring conditions
And emulsified, after the mixed liquor after emulsification is then heated to 70 DEG C, adds 15 parts of stearic acid and stirs to complete and melt,
Then raw after insulation reaction 30min again to containing 12 parts of calcium hydroxide powder are added in stearic mixed liquor, stirring after 5min
At milky thick liquid；
2. choosing 8 parts of aspen fibers by using silicon again is placed in above-mentioned milky thick liquid, after being stirred to react 50min, filtering, washing can be obtained
To modifying aspen fibers by using silicon, further preferably the partial size of modifying aspen fibers by using silicon is 40 mesh；
The preparation process of modified starch are as follows:
1. 70 parts of ethyl acetate stirrings are added into 130 parts of cornstarch is made starch suspension, 0.6 part of second is then added
Diamines stirs 40min at a temperature of 60 DEG C；
2. and then 5 parts of succinic anhydrides of dropwise addition, continuation filter to obtain solids after insulated and stirred, stirring again while stirring, freeze
Continue to grind solids after dry, obtains modified starch.
(2) 1.1 parts of α-sodium olefin sulfonate is added in 70 parts of water, is pumped into foaming agent storage after stirring evenly obtained expanding foam solution
It is spare in standby tank；
(3) 110 parts of desulfurization gypsum powders and 2.7 parts of triethanolamines are mixed, after mixing through promotion conveying equipment into
It is spare to enter feed bin；
(2) it stirs: the raw material slurry in slurry conservation tank being successively pumped into blender, foaming agent uses in foaming agent conservation tank
Dynamic foaming device importing blender, land plaster and coagulant enter blender using feeding structure, then in the mixed of blender
Cooperate lower obtained calcium plaster, wherein the revolving speed of blender is 600r/min, mixing time 460min；
(3) form: above-mentioned calcium plaster is added having a size of 2400mm × mold of the mm of 1200 mm × 40 in, then mold turned
Enter in baking oven, demoulds obtained plasterboard green body then by mold cooled to room temperature in 65 DEG C of at a temperature of drying 3h；
(4) it sprays: after weighing 10 parts of methyl silicon sodium alcoholates and 8 parts of aluminum aluminum sulfate mixed grindings, adding 10~12 parts of methyl-silicone oils
It is mixed, waterproofing slurry is obtained after stirring, the positive and negative surface of Xiang Shangshu plasterboard green body respectively sprays one layer of waterproofing slurry, after spraying
It puts in baking oven and is dried again, wherein coating thickness is 0.5mm, and drying temperature is 65 DEG C, drying time 2h；
(5) trimming is modified: by the plasterboard green body after spraying after trimming is modified, it can be prepared by water-resistant type fibrous plaster,
It tests to product, is put in storage after the assay was approved again.
Comparative example 1
Compared with Example 2, modifying aspen fibers by using silicon and its preparation step in raw material are saved, furthermore other compositions and step are homogeneous
Together.
Comparative example 2
Compared with Example 2, modifying aspen fibers by using silicon in raw material is replaced with into aspen fibers by using silicon, i.e., place is not modified to aspen fibers by using silicon
Reason, furthermore other compositions and step are all the same.
Test 1
Fibrous plaster panel products obtained by Examples 1 to 3 and comparative example 1~2 are respectively prepared having a size of 50mm × 50mm ×
The sample of 20mm, according to method in GB/T17669.3-1999 " measurement of building gypsum mechanical property " test its flexural strength,
Compression strength, specific testing result, and each group of experimental data are tested by 3 repetitions, its average value is then taken to obtain,
Testing result is as shown in table 1:
Table 1
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Comparative example 1 | Comparative example 2 | |
| Flexural strength (Mpa) | 22.2 | 24.5 | 25.7 | 8.2 | 12.3 |
| Compression strength (Mpa) | 15.6 | 16.2 | 16.7 | 7.8 | 11.1 |
Test 2
Fibrous plaster panel products obtained by Examples 1 to 3 and comparative example 1~2 are made having a size of 50mm × 50mm ×
The sample of 20mm, said sample is put at normal temperature respectively in the container for filling water, the water absorption rate after surveying it for 24 hours, result
It is as shown in table 2:
Table 2
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Comparative example 1 | Comparative example 2 | |
| Water absorption rate (%) | 15.0 | 12.3 | 9.7 | 43.5 | 30.2 |
Test 3
First group: compared with Example 2, the parts by weight of modifying aspen fibers by using silicon in raw material being replaced with 5 parts, 10 parts, 15 parts respectively
25 parts, 30 parts, furthermore other compositions and step are all the same, then said sample is put into the container for filling water at normal temperature respectively
In, the water absorption rate after surveying it for 24 hours；Second group: compared with comparative example 2, the parts by weight of aspen fibers by using silicon in raw material being replaced with 5 respectively
Part, 10 parts, 15 parts 25 parts, 30 parts, furthermore other compositions and step are all the same, then said sample is put into dress at normal temperature respectively
Water absorption rate in the container of full water, after surveying it for 24 hours；First group as shown in Figure 2 with second group of test result.
In conclusion can be seen that plasterboard has excellent waterproof moisture resistivity by the result of Tables 1 and 2, plasterboard
Mechanical strength is also improved, and structure is also more closely knit；As seen from Figure 2, modifying aspen fibers by using silicon being added can obviously change
The water absorption rate of kind fibrous plaster, and with the increase of modifying aspen fibers by using silicon volume, the water absorption rate of gypsum can be smaller and smaller, but
It is after the component of modifying aspen fibers by using silicon reaches 25 parts, the reduction difference of water absorption rate, which reduces degree, becomes very little, thus of the invention
It is preferred that the parts by weight of modifying aspen fibers by using silicon are 18~22 parts, in addition by the experimental group of modifying aspen fibers by using silicon and unmodified aspen fibers by using silicon
Experimental group, it is also seen that modified aspen fibers by using silicon can preferably reduce the water absorption rate of fibrous plaster.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to the foregoing embodiments
Invention is explained in detail, those skilled in the art should understand that: it still can be to aforementioned each implementation
Technical solution documented by example is modified or equivalent replacement of some of the technical features；And these modification or
Replacement, the spirit and scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (8)
1. a kind of preparation process of water proof type fibrous plaster, which comprises the following steps:
(1) it stocks up:
(1) in parts by weight: weigh 20~35 portions of modified starches, 18~22 parts of modifying aspen fibers by using silicon, 2~5 parts of retarder,
0.6~1.4 part of water-reducing agent and 20~30 parts of water and being put into hydrabrusher stir into raw material slurry, then by raw material stock pump pan feeding
It starches spare in conservation tank；
(2) 0.8~1.1 part of foaming agent is added in 60~70 parts of water, is pumped into foaming agent storage after stirring evenly obtained expanding foam solution
It is spare in standby tank；
(3) 85~110 parts of desulfurization gypsum powders and 2.2~2.7 parts of coagulant are mixed, after mixing by promoting conveying
It is spare that equipment enters feed bin；
(2) it stirs: the raw material slurry in slurry conservation tank being successively pumped into blender, foaming agent uses in foaming agent conservation tank
Dynamic foaming device importing blender, land plaster and coagulant enter blender using feeding structure, then in the mixed of blender
Cooperate lower obtained calcium plaster；
(3) it forms: above-mentioned calcium plaster being added in mold, then mold is transferred in baking oven, in 55~65 DEG C of at a temperature of drying
2~3h is demoulded and plasterboard green body is made then by mold cooled to room temperature；
(4) it sprays: after weighing 8~10 parts of methyl silicon sodium alcoholates and 6~8 parts of aluminum aluminum sulfate mixed grindings, adding 10~12 parts of first
Base silicone oil is mixed, and waterproofing slurry is obtained after stirring, and the positive and negative surface of Xiang Shangshu plasterboard green body respectively sprays one layer of waterproofing slurry,
It puts in baking oven and is dried again after spraying；
(5) trimming is modified: by the plasterboard green body after spraying after trimming is modified, it can be prepared by water-resistant type fibrous plaster,
It tests to product, is put in storage after the assay was approved again.
2. a kind of preparation process of water proof type fibrous plaster according to claim 1, which is characterized in that the step
(1) preparation process of modifying aspen fibers by using silicon in are as follows:
(1) 50~100 parts of water are first added into reaction kettle, 0.6~1.2 part of alkyl phenol is added into container under stirring conditions
Polyoxyethylene ether is simultaneously emulsified, and after the mixed liquor after emulsification is then heated to 60~70 DEG C, adds 10~15 parts of tristearin
Acid, which is simultaneously stirred to complete, to be melted, then to containing being added 10~12 parts of calcium hydroxide powder in stearic mixed liquor, stirring 2~
Generate milky thick liquid after 5min after 20~30min of insulation reaction again；
(2) 5~8 parts of aspen fibers by using silicon are chosen again is placed in above-mentioned milky thick liquid, after being stirred to react 30~50min, filtering, water
It washes and the modifying aspen fibers by using silicon can be obtained, further preferably the partial size of modifying aspen fibers by using silicon is 20~40 mesh.
3. a kind of preparation process of water proof type fibrous plaster according to claim 1, which is characterized in that the step
(1) preparation process of modified starch in are as follows:
(1) 50~70 parts of ethyl acetate stirrings are added into 18~30 parts of native starch, starch suspension is made, then add again
Enter 0.4~0.6 part of ethylenediamine and stirs 20~40min at a temperature of 60 DEG C；
(2) 3~5 parts of succinic anhydrides are then added dropwise while stirring, continuation filters to obtain solids after insulated and stirred, stirring again,
Freeze it is dry after continue to grind solids, obtain the modified starch.
4. a kind of preparation process of water proof type fibrous plaster according to claim 3, which is characterized in that the natural shallow lake
Powder appointing in cornstarch, starch from sweet potato, tapioca, potato starch, wheat starch, bean starch or sorghum starch
It anticipates one kind.
5. a kind of preparation process of water proof type fibrous plaster according to claim 1, which is characterized in that the step
(1) retarder is one of polycarboxylate, sodium citrate, sodium carboxymethylcellulose, carboxyethyl cellulose or a variety of mixed in
It closes；Water-reducing agent is any one in calcium lignosulfonate, Sodium Polyacrylate or sulfamic acid sodium；Foaming agent is dodecyl
Sodium sulphate, sodium sulfate of polyethenoxy ether of fatty alcohol, any one in α-sodium olefin sulfonate；Coagulant is triethanolamine, fluorine silicon
One of sour magnesium, zinc fluosilicate, calcium oxide, aluminum sulfate or a variety of mixing.
6. a kind of preparation process of water proof type fibrous plaster according to claim 1, which is characterized in that the step
(2) revolving speed of blender is 400~600r/min in, and mixing time is 40~60min.
7. a kind of preparation process of water proof type fibrous plaster according to claim 1, which is characterized in that the step
(3) size of mold is the mm × 40 of 2400mm × 1200 mm in.
8. a kind of preparation process of water proof type fibrous plaster according to claim 1, which is characterized in that the step
(4) coating thickness is 0.3~0.5mm in, and drying temperature is 55~65 DEG C, and drying time is 1~2h.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110948916A (en) * | 2019-12-10 | 2020-04-03 | 陈志良 | Preparation process of environment-friendly plate with waterproof, fireproof and acid and alkali resistant functions |
| CN111499302A (en) * | 2020-04-25 | 2020-08-07 | 浙江欣成建设有限公司 | Preparation process of concrete prefabricated wallboard |
| CN112142429A (en) * | 2020-09-14 | 2020-12-29 | 泰山石膏(涡阳)有限公司 | Single-sided moisture-resistant paper-surface gypsum board and preparation method thereof |
| CN113121190A (en) * | 2021-04-26 | 2021-07-16 | 泰山石膏有限公司 | Fiber gypsum board and preparation method thereof |
-
2019
- 2019-08-15 CN CN201910751574.5A patent/CN110482984A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110948916A (en) * | 2019-12-10 | 2020-04-03 | 陈志良 | Preparation process of environment-friendly plate with waterproof, fireproof and acid and alkali resistant functions |
| CN111499302A (en) * | 2020-04-25 | 2020-08-07 | 浙江欣成建设有限公司 | Preparation process of concrete prefabricated wallboard |
| CN112142429A (en) * | 2020-09-14 | 2020-12-29 | 泰山石膏(涡阳)有限公司 | Single-sided moisture-resistant paper-surface gypsum board and preparation method thereof |
| CN113121190A (en) * | 2021-04-26 | 2021-07-16 | 泰山石膏有限公司 | Fiber gypsum board and preparation method thereof |
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