CN108751906A - A kind of preparation method of the composite modified water-fast desulphurization building gypsum aerated-block of polyacrylamide emulsion-polyvinyl alcohol emulsions - Google Patents
A kind of preparation method of the composite modified water-fast desulphurization building gypsum aerated-block of polyacrylamide emulsion-polyvinyl alcohol emulsions Download PDFInfo
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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
- C04B28/18—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 mixtures of the silica-lime type
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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
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/40—Porous or lightweight 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
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
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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
- C04B2201/30—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values
- C04B2201/32—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values for the thermal conductivity, e.g. K-factors
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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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- Chemical & Material Sciences (AREA)
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- Chemical Kinetics & Catalysis (AREA)
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- General Chemical & Material Sciences (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
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Abstract
The invention discloses a kind of preparation methods of the composite modified water-fast desulphurization building gypsum aerated-block of polyacrylamide emulsion-polyvinyl alcohol emulsions, modified desulphurization building gypsum powder is put into flyash, blast-furnace cinder, lime in dry cement plaster blender, stirs evenly to obtain mixing cementitious material；Add water into polycarboxylate water-reducer, adds organosilicon mixing after stirring and dissolving, pour into agitated kettle；Sodium carboxymethylcellulose, sodium hydroxide and citric acid are dissolved into water, then aluminium powder is added to be uniformly dissolved, is poured into agitated kettle；Mixing cementitious material is poured into again, stirs to get slurry；Gained slurry is poured into mold, waiting is quiet to stop paying out gas, form removal after being molded in a mold, takes out test block, and maintenance reaches and provides age.Desulphurization building gypsum powder is carried out with lotion and pretreatment of fiber composite modified, improves its water resistance and over dry flexural strength；Organosilicon is composite modified with polycarboxylate water-reducer, is conducive to the full water compression strength and coefficient of softing that improve material, improves its water resistance.
Description
Technical field
The invention belongs to autoclave aerated concrete building block fields, and in particular to a kind of polyacrylamide emulsion-polyvinyl alcohol
The preparation method of the composite modified water-fast desulphurization building gypsum aerated-block of lotion.
Background technology
Increasingly strict with national energy conservation and emission reduction policy, byproduct desulfurated plaster yield increases year by year, disposition
Become focus with Utilizing question.It is domestic these by-products of consumption that materials for wall, which is made, at desulphurization building gypsum in desulphurization gypsum calcination
One of important way of gypsum, but desulphurization building gypsum walling haves the shortcomings that mechanical property and water resistance are poor, becomes restriction
Its main factor developed.The present invention is modified processing to desulphurization building gypsum, and it is higher to make every effort to obtain intensity, water resistance compared with
Good plastering realizes the utilization of gypsum composite wall material.
The recycling of desulfurated plaster is an important research topic.As the natural gypsum, desulfurated plaster product
With insulation, indoor humidity, fireproof excellent properties are adjusted.And the heat preservation aerated-block prepared by desulfurated plaster, certainly
In the case that body unit weight reduces, heat insulating effect is more excellent.
Invention content
The purpose of the present invention is for existing problem, it is multiple to provide a kind of polyacrylamide emulsion-polyvinyl alcohol emulsions
The preparation method for closing modified water-fast desulphurization building gypsum aerated-block is built according to desulphurization building gypsum aerating prepared by this method
Block has good water resistance.
The present invention is achieved by the following technical solutions：
A kind of preparation side of the composite modified water-fast desulphurization building gypsum aerated-block of polyacrylamide emulsion-polyvinyl alcohol emulsions
Method includes the following steps：
（1）The modification of desulphurization building gypsum powder：
By 1-2 parts of polyacrylamide emulsions, 3-6 parts of polyvinyl alcohol emulsions and water 1:60-70 is uniformly mixed, and lactic acid-coupling is added
Agent pretreated glass fiber, alkali-enzyme pretreatment broomcorn straw fiber and desulphurization building gypsum powder stir evenly to be modified desulfurization and build
Build land plaster；
（2）The mixing of cementitious material：
It will（1）Middle gained is modified desulphurization building gypsum powder and is put into 8-10 parts of flyash, 13-16 parts of blast-furnace cinders, 5-7 parts of lime
In dry cement plaster blender, stirring 3-5min is uniformly mixed, and obtains mixing cementitious material；
（3）The preparation of modified desulphurization building gypsum aerated-block：
Water is added by water paste ratio 0.4-0.6 into 1-2 parts of polycarboxylate water-reducers, adds 2-3 parts of organosilicon mixings after stirring and dissolving,
Enter in agitated kettle；2-3 parts of sodium carboxymethylcelluloses, 1-2 parts of sodium hydroxides and 0.01-0.02 parts of citric acids are dissolved into water,
Then add 0.2-0.3 parts of aluminium powders to be uniformly dissolved again, pour into agitated kettle；It pours into again（2）Middle gained mixes cementitious material, stirs
To slurry；
Further, step（1）Preparing for middle desulphurization building gypsum powder is as follows：
By 75-85 parts of desulfurated plasters, drying to constant weight at 38-42 DEG C, then dries 5- in 200-205 DEG C of air atmosphere
6h, then 0.1-0.2mm standard screens are crossed after being aged 6-7d, desulphurization building gypsum powder is made.
Further, step（1）Preparing for middle lactic acid-coupling agent pretreated glass fiber is as follows：
The glass fibre that 0.8-0.9 parts of length are 20mm is boiled 1-2h after cooling taking-up is dried to add in 98-102 DEG C of water-bath
Enter 0.5-1 parts of lactic acid to be thoroughly mixed, impregnate 1-2h, dried after taking out washing, 0.01-0.02 parts of KH-550 coupling agents are added
Solution is thoroughly mixed, and impregnates 1-2h, and taking-up is placed in drying in oven, obtains lactic acid-coupling agent pretreated glass fiber.
Further, step（1）Preparing for middle alkali-enzyme pretreatment broomcorn straw fiber is as follows：
The broomcorn straw fiber of 3-4 parts of length 15-30mm is added in NaOH solution and is submerged, is added in 70-73 DEG C of water bath with thermostatic control
Hot 2-3h is washed to neutrality repeatedly, takes out natural air drying, adds in a concentration of 1% alkaline protease solution, at 44-46 DEG C
7-8h is heated in water bath with thermostatic control, is washed to neutrality repeatedly, is taken out natural drying, is obtained alkali-enzyme pretreatment broomcorn straw fiber.
Further, step（1）Middle a concentration of 2-3% of polyacrylamide emulsion, a concentration of 4-5% of polyvinyl alcohol emulsions.
Further, step（3）The stirring of middle slurry is first to mix slowly 30-35s, then quickly stir 55-65s.
Further, step（3）Middle organosilicon is silane resin acceptor kh-550, and mix coolant-temperature gage is 35-45 DEG C.
The present invention has the following advantages compared with prior art：
（1）Glass fibre is boiled successively, after lactic acid and coupling agent treatment, the increase of fiberglass surfacing roughness makes fibre
Dimension and the binding force of matrix enhance, and are spiked into modified desulphurization building gypsum compound system, can improve the over dry of aerated-block
Flexural strength.
（2）The broomcorn straw fiber doping for passing through NaOH solution, basic protein enzymatic treatment successively is built to modified desulfurization
In gypsum compound system, alkali corrosion stalk surface increases roughness, removes tartaric acid and aliphatic acid；Alkali protease removal weight egg
Bai Chengfen makes fiber reinforcement show, and can increase the over dry flexural strength of aerated-block.
（3）Desulphurization building gypsum is modified using high molecular polymer-polyacrylamide emulsion, improves its mechanics and water proofing property
Can, polyacrylamide emulsion is to the mechanism of action of desulphurization building gypsum aquation：One side and Ca in desulfurated plaster2+Interaction
Compound is generated, is filled in the gap between desulphurization building gypsum hydrated product calcium sulphate dihydrate crystal, another aspect poly- third
Acrylamide molecule wraps up desulphurization building gypsum particle, hinders that hydration reaction occurs with water.
It is high with polyacrylamide emulsion, polyvinyl alcohol emulsions, lactic acid-coupling agent pretreated glass fiber, alkali-enzyme pretreatment
Fine strain of millet stalk fibre is composite modified to the progress of desulphurization building gypsum powder, improves its water resistance and over dry flexural strength.
（4）The composite modifier of organosilicon silane resin acceptor kh-550 and polycarboxylate water-reducer composition is conducive to improve de-
The full water compression strength and coefficient of softing of sulphur building gypsum materials for wall, improve its water resistance.
（5）During preparing desulphurization building gypsum aerated-block, lime as exciting agent, composite mixed flyash and
Blast-furnace cinder, powder coal ash glass-microballons and hydrated product, which are uniformly distributed, is formed by physics filling effect, the life of blast-furnace cinder aquation
At the hydrated products such as calcium silicates be formed by cementation.
Specific implementation mode
Embodiment 1
A kind of preparation side of the composite modified water-fast desulphurization building gypsum aerated-block of polyacrylamide emulsion-polyvinyl alcohol emulsions
Method includes the following steps：
（1）The modification of desulphurization building gypsum powder：
By 1 part of polyacrylamide emulsion, 3 parts of polyvinyl alcohol emulsions and water 1:60 are uniformly mixed, and lactic acid-coupling agent pretreatment is added
Glass fibre, alkali-enzyme pretreatment broomcorn straw fiber and desulphurization building gypsum powder stir evenly to obtain modified desulphurization building gypsum
Powder；
（2）The mixing of cementitious material：
It will（1）Middle gained is modified desulphurization building gypsum powder and 8 parts of flyash, 13 parts of blast-furnace cinders, 5 parts of dry cement of lime input
In mortar mixer, stirring 5min is uniformly mixed, and obtains mixing cementitious material；
（3）The preparation of modified desulphurization building gypsum aerated-block：
Water is added by water paste ratio 0.4 into 1 part of polycarboxylate water-reducer, adds 2 parts of organosilicon mixings after stirring and dissolving, pours into agitated kettle
In；2 parts of sodium carboxymethylcelluloses, 1 part of sodium hydroxide and 0.01 part of citric acid are dissolved into water, then add 0.2 part of aluminium powder again
It is uniformly dissolved, pours into agitated kettle；It pours into again（2）Middle gained mixes cementitious material, stirs to get slurry；
Further, step（1）Preparing for middle desulphurization building gypsum powder is as follows：
By 75 parts of desulfurated plasters, drying to constant weight at 38-42 DEG C, and 5h is then dried in 200-205 DEG C of air atmosphere, then
0.1mm standard screens are crossed after being aged 7d, desulphurization building gypsum powder is made.
Further, step（1）Preparing for middle lactic acid-coupling agent pretreated glass fiber is as follows：
The glass fibre that 0.8 part of length is 20mm is boiled into 1h after cooling taking-up is dried in 98-102 DEG C of water-bath and is added 0.5
Part lactic acid is thoroughly mixed, and impregnates 1h, is dried after taking out washing, and 0.01 part of KH-550 coupling agent solution is added, is sufficiently stirred
Mixing, impregnates 2h, and taking-up is placed in drying in oven, obtains lactic acid-coupling agent pretreated glass fiber.
Further, step（1）Preparing for middle alkali-enzyme pretreatment broomcorn straw fiber is as follows：
The broomcorn straw fiber of 3 parts of length 15-30mm is added in NaOH solution and is submerged, is heated in 70-73 DEG C of water bath with thermostatic control
2h is washed to neutrality repeatedly, takes out natural air drying, adds in a concentration of 1% alkaline protease solution, in 44-46 DEG C of constant temperature
7h is heated in water-bath, is washed to neutrality repeatedly, is taken out natural drying, is obtained alkali-enzyme pretreatment broomcorn straw fiber.
Further, step（1）Middle polyacrylamide emulsion a concentration of 2%, polyvinyl alcohol emulsions a concentration of 4%.
Further, step（3）The stirring of middle slurry is first to mix slowly 30s, then quickly stir 55s.
Further, step（3）Middle organosilicon is silane resin acceptor kh-550, and mix coolant-temperature gage is 35-45 DEG C.
Embodiment 2
A kind of preparation side of the composite modified water-fast desulphurization building gypsum aerated-block of polyacrylamide emulsion-polyvinyl alcohol emulsions
Method includes the following steps：
（1）The modification of desulphurization building gypsum powder：
By 2 parts of polyacrylamide emulsions, 6 parts of polyvinyl alcohol emulsions and water 1:70 are uniformly mixed, and lactic acid-coupling agent pretreatment is added
Glass fibre, alkali-enzyme pretreatment broomcorn straw fiber and desulphurization building gypsum powder stir evenly to obtain modified desulphurization building gypsum
Powder；
（2）The mixing of cementitious material：
It will（1）Middle gained is modified desulphurization building gypsum powder and 10 parts of flyash, 16 parts of blast-furnace cinders, 7 parts of dry water of lime input
In cement mortar blender, stirring 5min is uniformly mixed, and obtains mixing cementitious material；
（3）The preparation of modified desulphurization building gypsum aerated-block：
Water is added by water paste ratio 0.4 into 2 parts of polycarboxylate water-reducers, adds 3 parts of organosilicon mixings after stirring and dissolving, pours into agitated kettle
In；3 parts of sodium carboxymethylcelluloses, 1 part of sodium hydroxide and 0.01 part of citric acid are dissolved into water, then add 0.2 part of aluminium powder again
It is uniformly dissolved, pours into agitated kettle；It pours into again（2）Middle gained mixes cementitious material, stirs to get slurry；
Further, step（1）Preparing for middle desulphurization building gypsum powder is as follows：
By 75 parts of desulfurated plasters, drying to constant weight at 38-42 DEG C, and 5h is then dried in 200-205 DEG C of air atmosphere, then
0.2mm standard screens are crossed after being aged 6d, desulphurization building gypsum powder is made.
Further, step（1）Preparing for middle lactic acid-coupling agent pretreated glass fiber is as follows：
The glass fibre that 0.8 part of length is 20mm is boiled into 1h after cooling taking-up is dried in 98-102 DEG C of water-bath and is added 0.5
Part lactic acid is thoroughly mixed, and impregnates 1h, is dried after taking out washing, and 0.01 part of KH-550 coupling agent solution is added, is sufficiently stirred
Mixing, impregnates 2h, and taking-up is placed in drying in oven, obtains lactic acid-coupling agent pretreated glass fiber.
Further, step（1）Preparing for middle alkali-enzyme pretreatment broomcorn straw fiber is as follows：
The broomcorn straw fiber of 3 parts of length 15-30mm is added in NaOH solution and is submerged, is heated in 70-73 DEG C of water bath with thermostatic control
2h is washed to neutrality repeatedly, takes out natural air drying, adds in a concentration of 1% alkaline protease solution, in 44-46 DEG C of constant temperature
7h is heated in water-bath, is washed to neutrality repeatedly, is taken out natural drying, is obtained alkali-enzyme pretreatment broomcorn straw fiber.
Further, step（1）Middle polyacrylamide emulsion a concentration of 2%, polyvinyl alcohol emulsions a concentration of 4%.
Further, step（3）The stirring of middle slurry is first to mix slowly 35s, then quickly stir 65s.
Further, step（3）Middle organosilicon is silane resin acceptor kh-550, and mix coolant-temperature gage is 35-45 DEG C.
Comparative example 1
This comparative example 1 compared with Example 1, in step（1）Middle glass fibre and height of the addition without any modification
Fine strain of millet stalk fibre, method and step all same in addition to this.
Comparative example 2
This comparative example 2 compared with Example 2, in step（3）Polycarboxylate water-reducer and organosilicon are not added for addition, in addition to this
Method and step all same.
Control group
Application No. is：201711048349.2 disclosed a kind of autoclave aerated concrete building block and preparation method thereof.
Resistance to compression after dry volume density, compression strength, jelly in order to compare autoclave aerated concrete building block produced by the present invention
Intensity, drying shrinkage value and thermal coefficient, to above-described embodiment 1, embodiment 2, comparative example 1,2 method pair of comparative example
The corresponding autoclave aerated concrete building block of autoclave aerated concrete building block and control group obtained is answered to be carried out according to professional standard
Performance detection, specific correction data are as shown in table 1 below：
Table 1
The synthesis mechanics of autoclave aerated concrete building block made from the method for the present invention it can be seen from upper table 1 is obtained using quality
Apparent improvement is promoted, and autoclave aerated concrete building block has very strong water-fast, heat preservation and insulation, can keep good power
It learns and uses quality, stability is strong, safe to use, and service life is long, great popularizing value and the market competitiveness.
Claims (7)
1. a kind of preparation of the composite modified water-fast desulphurization building gypsum aerated-block of polyacrylamide emulsion-polyvinyl alcohol emulsions
Method, which is characterized in that include the following steps：
（1）The modification of desulphurization building gypsum powder：
By 1-2 parts of polyacrylamide emulsions, 3-6 parts of polyvinyl alcohol emulsions and water 1:60-70 is uniformly mixed, and lactic acid-coupling is added
Agent pretreated glass fiber, alkali-enzyme pretreatment broomcorn straw fiber and desulphurization building gypsum powder stir evenly to be modified desulfurization and build
Build land plaster；
（2）The mixing of cementitious material：
It will（1）Middle gained is modified desulphurization building gypsum powder and is put into 8-10 parts of flyash, 13-16 parts of blast-furnace cinders, 5-7 parts of lime
In dry cement plaster blender, stirring 3-5min is uniformly mixed, and obtains mixing cementitious material；
（3）The preparation of modified desulphurization building gypsum aerated-block：
Water is added by water paste ratio 0.4-0.6 into 1-2 parts of polycarboxylate water-reducers, adds 2-3 parts of organosilicon mixings after stirring and dissolving,
Enter in agitated kettle；2-3 parts of sodium carboxymethylcelluloses, 1-2 parts of sodium hydroxides and 0.01-0.02 parts of citric acids are dissolved into water,
Then add 0.2-0.3 parts of aluminium powders to be uniformly dissolved again, pour into agitated kettle；It pours into again（2）Middle gained mixes cementitious material, stirs
To slurry；
Gained slurry is poured into mold, waiting is quiet to stop paying out gas, is molded in a mold, reaches form removal after the stipulated time, takes out examination
Block conserves 2-3h at being 60-80 DEG C in temperature, reaches regulation age.
2. a kind of composite modified water-fast desulfurization of polyacrylamide emulsion-polyvinyl alcohol emulsions according to claim 1 is built
Build the preparation method of gypsum aerated-block, which is characterized in that step（1）Preparing for middle desulphurization building gypsum powder is as follows：
By 75-85 parts of desulfurated plasters, drying to constant weight at 38-42 DEG C, then dries 5- in 200-205 DEG C of air atmosphere
6h, then 0.1-0.2mm standard screens are crossed after being aged 6-7d, desulphurization building gypsum powder is made.
3. a kind of composite modified water-fast desulfurization of polyacrylamide emulsion-polyvinyl alcohol emulsions according to claim 1 is built
Build the preparation method of gypsum aerated-block, which is characterized in that step（1）The preparation of middle lactic acid-coupling agent pretreated glass fiber
It is as follows：
The glass fibre that 0.8-0.9 parts of length are 20mm is boiled 1-2h after cooling taking-up is dried to add in 98-102 DEG C of water-bath
Enter 0.5-1 parts of lactic acid to be thoroughly mixed, impregnate 1-2h, dried after taking out washing, 0.01-0.02 parts of KH-550 coupling agents are added
Solution is thoroughly mixed, and impregnates 1-2h, and taking-up is placed in drying in oven, obtains lactic acid-coupling agent pretreated glass fiber.
4. a kind of composite modified water-fast desulfurization of polyacrylamide emulsion-polyvinyl alcohol emulsions according to claim 1 is built
Build the preparation method of gypsum aerated-block, which is characterized in that step（1）The preparation of middle alkali-enzyme pretreatment broomcorn straw fiber is such as
Under：
The broomcorn straw fiber of 3-4 parts of length 15-30mm is added in NaOH solution and is submerged, is added in 70-73 DEG C of water bath with thermostatic control
Hot 2-3h is washed to neutrality repeatedly, takes out natural air drying, adds in a concentration of 1% alkaline protease solution, at 44-46 DEG C
7-8h is heated in water bath with thermostatic control, is washed to neutrality repeatedly, is taken out natural drying, is obtained alkali-enzyme pretreatment broomcorn straw fiber.
5. a kind of composite modified water-fast desulfurization of polyacrylamide emulsion-polyvinyl alcohol emulsions according to claim 1 is built
Build the preparation method of gypsum aerated-block, which is characterized in that step（1）Middle a concentration of 2-3% of polyacrylamide emulsion, polyethylene
Alcohol emulsion concentration is 4-5%.
6. a kind of composite modified water-fast desulfurization of polyacrylamide emulsion-polyvinyl alcohol emulsions according to claim 1 is built
Build the preparation method of gypsum aerated-block, which is characterized in that step（3）The stirring of middle slurry be first mix slowly 30-35s, then
Quickly stirring 55-65s.
7. a kind of composite modified water-fast desulfurization of polyacrylamide emulsion-polyvinyl alcohol emulsions according to claim 1 is built
Build the preparation method of gypsum aerated-block, which is characterized in that step（3）Middle organosilicon is silane resin acceptor kh-550, mixing water
Temperature is 35-45 DEG C.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109665739A (en) * | 2018-11-07 | 2019-04-23 | 宁夏宝塔化工中心实验室(有限公司) | A kind of efficient gypsum reinforcing agent |
| CN109867506A (en) * | 2019-04-17 | 2019-06-11 | 王桂兰 | A method of improving land plaster performance |
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| CN110255945A (en) * | 2019-07-16 | 2019-09-20 | 成都新柯力化工科技有限公司 | A kind of building concrete road surface Special flexible compound mineral fiber and preparation method |
| CN114149226A (en) * | 2021-12-09 | 2022-03-08 | 中国矿业大学 | Wood nano-cellulose modified cemented filling material for deep structure filling and preparation method thereof |
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