CN108947413A - A kind of preparation method of bend resistance calcium silicate board - Google Patents
A kind of preparation method of bend resistance calcium silicate board Download PDFInfo
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- CN108947413A CN108947413A CN201811078595.7A CN201811078595A CN108947413A CN 108947413 A CN108947413 A CN 108947413A CN 201811078595 A CN201811078595 A CN 201811078595A CN 108947413 A CN108947413 A CN 108947413A
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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
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
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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
- 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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Abstract
The invention discloses a kind of preparation methods of bend resistance calcium silicate board, belong to building material technical field.The present invention crushes wood-fibred, and sieving obtains pretreatment wood-fibred；Pretreatment wood-fibred is stirred with mixed enzyme solution constant temperature, enzyme deactivation is filtered, and is washed, and it is dry, obtain single treatment wood-fibred；By single treatment wood-fibred, bacteria residue, urea, water by fermentation is subsequently added into iron nitrate solution, is subsequently added into sodium hydroxide solution and adjusts pH, filter, wash, dry, carbonizes to get secondary treatment wood-fibred；Secondary treatment wood-fibred is handled using high-temperature water vapor, it is dry, obtain modified wood-fibred；By cement, modification infusorial earth, modified wood-fibred, water, pretreatment additive, water-reducing agent is stirred, and magnetic field is passed through in whipping process, injection molding, is stood, and demoulding conserves to get bend resistance calcium silicate board.The bend resistance calcium silicate board of technical solution of the present invention preparation has the characteristics that excellent mechanical property, has broad prospects in the development of building material technology industry.
Description
Technical field
The invention discloses a kind of preparation methods of bend resistance calcium silicate board, belong to building material technical field.
Background technique
For calcium silicate board as a kind of new green environment protection building materials, it and is matched using high-quality high-mark cement as basis material
Enhanced with natural fiber, handle and be made through special techniques such as vanguard technology molding, pressurization, high-temperature steam curings, passed except having
It unites outside the function of plasterboard, has the characteristics that superior fire prevention, moisture-proof, durable, deformation is small, has been widely used at present in house
Building and industrial building field.In field of house buildings, such plate be mainly used in indoor partition metope, furred ceiling, ceiling,
Ground laying etc..It is specially fabricated and after external coating, may be used as exterior wall cladding or exterior wall thick china etc., and can be used
In inside and outside wall thermal insulation and permanent formwork.Currently, the calcium silicate board for building belongs to high-grade ornament materials, inner-outer wall is decorated
The fields such as body, cabinet, ceiling can play good decorative effect.But single calcium silicate board is not beautiful enough, color
Pattern is single；Waterproofness is inadequate when calcium silicate board is directly used in exterior wall.These defects all significantly limit calcium silicate board can be with
It is more widely used.In industrial construction field, such plate can be used for power plant flue, boiler, chemical pipeline heat preservation,
The furnace wall of the equipment such as industrial dry kiln and the shifting board of steamer etc..And there is also mechanical property for traditional bend resistance calcium silicate board
The problem of capable of can not further increasing.Therefore, the shortcomings that how improving traditional bend resistance calcium silicate board, higher comprehensive to obtain
The promotion of energy is that it is promoted and is applied to broader field, meets industrial production demand urgent problem to be solved.
Summary of the invention
The present invention solves the technical problem of: for the bad problem of traditional bend resistance calcium silicate board mechanical property,
Provide a kind of preparation method of bend resistance calcium silicate board.
In order to solve the above-mentioned technical problem, the technical scheme adopted by the invention is that:
A kind of preparation method of bend resistance calcium silicate board, specific preparation process is as follows:
(1) wood-fibred is crushed, crosses the sieve of 120 mesh, obtains pretreatment wood-fibred；
(2) pretreatment wood-fibred being stirred with mixed enzyme solution 1:10~1:20 constant temperature in mass ratio, enzyme deactivation is filtered, washing,
It is dry, obtain single treatment wood-fibred；
(3) according to parts by weight, by 20~30 parts of single treatment wood-fibreds, 3~5 parts of bacteria residues, 2~3 parts of urea, 20~30 parts of water
Mixed fermentation is subsequently added into iron nitrate solution, is subsequently added into sodium hydroxide solution and adjusts pH to 8.1~7.4, filter, wash, does
It is dry, it carbonizes to get secondary treatment wood-fibred；
(4) secondary treatment wood-fibred is handled using high-temperature water vapor, it is dry, obtain modified wood-fibred；
(5) according to parts by weight, by 40~60 parts of cement, 60~80 parts of modification infusorial earths, 20~30 parts of modified wood-fibreds, 40~
60 parts of water, 10~20 parts of pretreatment additives, 2~3 parts of water-reducing agents are stirred, and magnetic field is passed through in whipping process, injection molding,
It stands, demoulding, high temperature and pressure maintenance, room temperature conserves to get bend resistance calcium silicate board.
Step (2) described mixed enzyme solution is made of the raw material of following parts by weight: 2~3 parts of cellulases, 2~3 portions of fruits
Glue enzyme, 20~30 parts of water, 2~5 parts of glycerol.
Step (5) cement is portland cement, any one in aluminate cement or sulfate cement.
The preparation process of step (5) described modification infusorial earth are as follows: diatomite is crushed, is sieved, is roasted, cooling obtains pre- place
Diatomite is managed, according to parts by weight, by 20~30 parts of pretreatment diatomite, 10~20 parts of starch, 5~8 parts of silicone oil mixing and ball millings,
Sieving, charing, obtains modification infusorial earth.
The preparation process of step (5) the pretreatment additive are as follows: by nanometer iron powder and low-melting alloy in mass ratio 1:
10~1:15 consolute, cooled and solidified crush to get pretreatment additive.
Step (5) water-reducing agent is sodium lignin sulfonate, and TH-928 poly carboxylic acid series water reducer or YZ-1 naphthalene series high-efficiency subtract
Any one in aqua.
Step (5) the high temperature and pressure curing condition are as follows: temperature is 175~185 DEG C, and pressure is 0.8~1.2MPa.
The beneficial effects of the present invention are:
The present invention is modified wood-fibred and pretreatment additive by adding, firstly, in the preparation process of modified wood-fibred, pre- place
Processing of the wood-fibred Jing Guo mixed enzyme is managed, so that the permeance property of fiber gets a promotion, then, during the fermentation, in bacteria residue
Sporebearer silk, and absorb the nutrient and moisture in wood-fibred using mycelia, mycelia dispersion is interspersed in the fibre, favorably
In the dispersion of wood-fibred, it is subsequently added into iron nitrate solution, mycelia can absorb moisture, meanwhile, ferric nitrate in water is absorbed into body
In system, then by the way that sodium hydroxide solution adjusting pH is added, so that the precipitation of iron ions in mycelia, and sink as ferric hydroxide
It forms sediment in system, then, in carbonisation, iron hydroxide gradually dehydration in system forms iron oxide, with system temperature
It is gradually increasing, the iron oxide in system is reacted with charcoal, is produced fe and is deposited in charing mycelia, then, utilizes high-temperature water
Steam treatment, fe and steam reaction generate the magnetic ferroso-ferric oxide of tool and pass through additional magnetic in use
The effect of field, enables modified fibre is good to be dispersed in system, then in hot pressing, pre-processes in additive
Low-melting alloy melted by heat, the nanometer iron powder pre-processed in additive are made in the attraction of innovation wood fiber surface ferroso-ferric oxide
Under, guidance low-melting alloy is dispersed in innovation wood fiber peripheral, after system cooled and solidified, forms metallurgy between modified wood-fibred
In conjunction with so that the mechanical property of system gets a promotion.
Specific embodiment
According to parts by weight, by 2~3 parts of cellulases, 2~3 parts of pectases, 20~30 parts of water, 2~5 parts of glycerol are placed in 1
In number beaker, and No. 1 beaker being placed in digital display and is tested the speed in constant temperature blender with magnetic force, is 28~32 DEG C in temperature, revolving speed is 200~
Under the conditions of 300r/min, constant temperature is stirred 40~60min, obtains mixed enzyme solution；Diatomite is placed in ball mill grinding in ball mill,
The sieve for crossing 100 mesh obtains refinement diatomite, then will refinement diatomite be placed in Muffle furnace, in temperature be 550~650 DEG C of conditions
Under, after roasting 1~2h, it is down to room temperature with furnace, obtains pretreatment diatomite, according to parts by weight, by 20~30 parts of pretreatment diatoms
Soil, 10~20 parts of starch, 5~8 parts of silicone oil are placed in ball mill after 40~60min of mixing and ball milling, are crossed the sieve of 120 mesh, are obtained ball milling
Material, then ball milling material is placed in retort, and think to be filled with nitrogen in furnace with the rate of 60~90mL/min, in temperature be 650
Under the conditions of~750 DEG C, 2~3h is carbonized, modification infusorial earth is obtained；By nanometer iron powder and low-melting alloy 1:10~1:15 in mass ratio
It is placed in crucible after consolute, cooled and solidified, obtains coagulated mass, then crush coagulated mass to get pretreatment additive；By wood-fibred
It is placed in pulverizer and crushes, cross the sieve of 120 mesh, obtain pretreatment wood-fibred；Wood-fibred and mixed enzyme solution will be pre-processed in mass ratio
1:10~1:20 is placed in No. 2 beakers, is 200~300r/min in revolving speed, under the conditions of temperature is 32 DEG C, constant temperature is stirred 40
After~60min, 80~90 DEG C of enzyme deactivations are warming up to, mixed serum is obtained, then mixed serum is filtered, obtains filter cake, then use filter cake
Deionized water is washed 5~8 times, and then the filter cake after washing is placed in baking oven, dry under the conditions of temperature is 105~110 DEG C
To constant weight, single treatment wood-fibred is obtained；According to parts by weight, by 20~30 parts of single treatment wood-fibreds, 3~5 parts of bacteria residues, 2~3
Part urea, 20~30 parts of water are placed in fermentation cauldron, are 28~32 DEG C in temperature, under the conditions of revolving speed is 100~200r/min, are stirred
Mixed fermentation 3~5 days, the iron nitrate solution that mass fraction is 10~20% is then added into fermentation cauldron, then into fermentation cauldron
The sodium hydroxide solution that mass fraction is 20~30% is added and adjusts pH to 8.1~7.4, obtains mixed fermentation liquid, then sends out mixing
Zymotic fluid filtering, obtains filter residue, then the filter residue after washing is then placed in residue washing 5~8 times in baking oven to deionized water,
Under the conditions of temperature is 105~110 DEG C, drying to constant weight obtains dry filter residue, and then dry filter residue is placed in sintering furnace, and
Argon gas is inflated into furnace with 110~120mL/min rate, under the conditions of temperature is 1200~1300 DEG C, after carbonizing 2~3h, with
Furnace is down to room temperature to get secondary treatment wood-fibred；Then secondary treatment wood-fibred is placed in reaction kettle, then into reaction kettle
It is passed through high-temperature high-pressure steam, is 280~315 DEG C in temperature, under the conditions of pressure is 0.8~1.2MPa, handles 3~5h, must locate
Processing material is then placed in baking oven by reason material, dry to constant weight under the conditions of temperature is 105~110 DEG C, obtains modified wood-fibred；
According to parts by weight, by 40~60 parts of cement, 60~80 parts of modification infusorial earths, 20~30 parts of modified wood-fibreds, 40~60 parts of water,
10~20 parts of pretreatment additives, 2~3 parts of water-reducing agents are placed in batch mixer, under the conditions of revolving speed is 100~200r/min, and
It is passed through the magnetic field of 40~50T in whipping process, is stirred 40~60min, obtains mixed slurry, is then sprayed to die surface
Discarded machine oil, then injects mixed slurry in mold, and standing 18~for 24 hours, demoulding obtains blank, is then placed in blank steam-cured
It is 175~185 DEG C in temperature in kettle, pressure is 0.8~1.2MPa, after high temperature and pressure conserves 5~8h, under room temperature, is supported
Shield 18~for 24 hours to get bend resistance calcium silicate board.The cement is portland cement, in aluminate cement or sulfate cement
Any one.The water-reducing agent is sodium lignin sulfonate, in TH-928 poly carboxylic acid series water reducer or YZ-1 naphthalene series high-efficiency water-reducing agent
Any one.The low-melting alloy is bismuth tin alloy, each component mass content in bismuth tin alloy are as follows: bismuth accounts for 51%(ω), tin
Account for 30%(ω), lead accounts for 8%(ω), indium accounts for 11%(ω).
According to parts by weight, by 3 parts of cellulases, 3 parts of pectases, 30 parts of water, 5 parts of glycerol are placed in No. 1 beaker, and are incited somebody to action
No. 1 beaker is placed in digital display and tests the speed in constant temperature blender with magnetic force, is 32 DEG C in temperature, under the conditions of revolving speed is 300r/min, constant temperature is stirred
Mixing 60min is mixed, mixed enzyme solution is obtained；Diatomite is placed in ball mill grinding in ball mill, the sieve of 100 mesh is crossed, obtains refinement diatomite,
Then refinement diatomite is placed in Muffle furnace, under the conditions of temperature is 650 DEG C, after roasting 2h, is down to room temperature with furnace, obtains pre- place
Diatomite is managed, according to parts by weight, by 30 parts of pretreatment diatomite, 20 parts of starch, 8 parts of silicone oil are placed in mixing and ball milling in ball mill
After 60min, the sieve of 120 mesh is crossed, ball milling material is obtained, then ball milling material is placed in retort, and furnace is want with the rate of 90mL/min
It is inside filled with nitrogen, under the conditions of temperature is 750 DEG C, 3h is carbonized, obtains modification infusorial earth；Nanometer iron powder and low-melting alloy are pressed into matter
Amount is placed in crucible after consolute than 1:15, and cooled and solidified obtains coagulated mass, then crushes coagulated mass to get pretreatment additive；
Wood-fibred is placed in pulverizer and is crushed, the sieve of 120 mesh is crossed, obtains pretreatment wood-fibred；It will pretreatment wood-fibred and mixed enzyme solution
1:20 in mass ratio is placed in No. 2 beakers, is 300r/min in revolving speed, under the conditions of temperature is 32 DEG C, constant temperature is stirred 60min
Afterwards, 90 DEG C of enzyme deactivations are warming up to, mixed serum is obtained, then mixed serum is filtered, obtains filter cake, then filter cake is washed with deionized
8 times, then the filter cake after washing is placed in baking oven, it is dry to constant weight under the conditions of temperature is 110 DEG C, obtain single treatment wood
Fiber；According to parts by weight, by 30 parts of single treatment wood-fibreds, 5 parts of bacteria residues, 3 parts of urea, 30 parts of water are placed in fermentation cauldron, in
Temperature is 32 DEG C, under the conditions of revolving speed is 200r/min, is stirred fermentation 5 days, and mass fraction is then added into fermentation cauldron and is
The sodium hydroxide solution that mass fraction is 30% is then added into fermentation cauldron and adjusts pH to 7.4, obtains mixed for 20% iron nitrate solution
Fermentation liquid is closed, then mixed fermentation liquid is filtered, obtains filter residue, then with deionized water by residue washing 8 times, after then washing
Filter residue be placed in baking oven, it is dry to constant weight under the conditions of temperature is 110 DEG C, obtain dry filter residue, be then placed in dry filter residue
In sintering furnace, and argon gas is inflated into furnace with 120mL/min rate, under the conditions of temperature is 1300 DEG C, after carbonizing 3h, is dropped with furnace
To room temperature to get secondary treatment wood-fibred；Then secondary treatment wood-fibred is placed in reaction kettle, is then passed through into reaction kettle
High-temperature high-pressure steam is 315 DEG C in temperature, under the conditions of pressure is 1.2MPa, handles 5h, must handle material, then expect processing
It is placed in baking oven, it is dry to constant weight under the conditions of temperature is 110 DEG C, obtain modified wood-fibred；According to parts by weight, by 60 parts of water
Mud, 80 parts of modification infusorial earths, 30 parts of modified wood-fibreds, 60 parts of water, 20 parts of pretreatment additives, 3 parts of water-reducing agents are placed in batch mixer
In, under the conditions of revolving speed is 200r/min, and it is passed through in whipping process the magnetic field of 50T, is stirred 60min, obtains mixing slurry
Material then sprays discarded machine oil to die surface, then injects mixed slurry in mold, stands for 24 hours, and demoulding obtains blank, connects
Blank is placed in steam-cured kettle, in temperature be 185 DEG C, pressure 1.2MPa, high temperature and pressure conserve 8h after, in room temperature condition
Under, it conserves for 24 hours to get bend resistance calcium silicate board.The cement is portland cement.The water-reducing agent is sodium lignin sulfonate.
The low-melting alloy is bismuth tin alloy, each component mass content in bismuth tin alloy are as follows: bismuth accounts for 51%(ω), tin accounts for 30%(ω),
Lead accounts for 8%(ω), indium accounts for 11%(ω).
According to parts by weight, by 3 parts of cellulases, 3 parts of pectases, 30 parts of water, 5 parts of glycerol are placed in No. 1 beaker, and are incited somebody to action
No. 1 beaker is placed in digital display and tests the speed in constant temperature blender with magnetic force, is 32 DEG C in temperature, under the conditions of revolving speed is 300r/min, constant temperature is stirred
Mixing 60min is mixed, mixed enzyme solution is obtained；Nanometer iron powder and low-melting alloy 1:15 in mass ratio are placed in crucible after consolute, it is cold
But it solidifies, obtains coagulated mass, then crush coagulated mass to get pretreatment additive；Wood-fibred is placed in pulverizer and is crushed, mistake
The sieve of 120 mesh obtains pretreatment wood-fibred；Pretreatment wood-fibred and mixed enzyme solution 1:20 in mass ratio are placed in No. 2 beakers, in
Revolving speed is that 300r/min after constant temperature is stirred 60min, is warming up to 90 DEG C of enzyme deactivations, obtains mixing slurry under the conditions of temperature is 32 DEG C
Liquid, then mixed serum is filtered, filter cake is obtained, then filter cake is washed with deionized 8 times, is then placed in the filter cake after washing
It is dry to constant weight under the conditions of temperature is 110 DEG C in baking oven, obtain single treatment wood-fibred；According to parts by weight, by 30 part one
Secondary processing wood-fibred, 5 parts of bacteria residues, 3 parts of urea, 30 parts of water are placed in fermentation cauldron, are 32 DEG C in temperature, revolving speed is 200r/min item
Under part, it is stirred fermentation 5 days, the iron nitrate solution that mass fraction is 20% is then added into fermentation cauldron, then to fermentation cauldron
It is middle that the sodium hydroxide solution adjusting pH to 7.4 that mass fraction is 30% is added, mixed fermentation liquid is obtained, then by mixed fermentation liquid mistake
Filter, obtains filter residue, then then the filter residue after washing is placed in baking oven, is in temperature by residue washing 8 times with deionized water
It is dry to obtain dry filter residue to constant weight, then dry filter residue is placed in sintering furnace under the conditions of 110 DEG C, and with 120mL/min speed
Rate inflates argon gas into furnace, and under the conditions of temperature is 1300 DEG C, after carbonizing 3h, it is fine to get secondary treatment wood to be down to room temperature with furnace
Dimension；Then secondary treatment wood-fibred is placed in reaction kettle, high-temperature high-pressure steam is then passed through into reaction kettle, be in temperature
315 DEG C, pressure be 1.2MPa under the conditions of, handle 5h, must handle material, then will processing expect be placed in baking oven, in temperature be 110 DEG C
Under the conditions of, it is dry to constant weight, obtain modified wood-fibred；According to parts by weight, by 60 parts of cement, 80 parts of diatomite, 30 parts of innovation woods
Fiber, 60 parts of water, 20 parts of pretreatment additives, 3 parts of water-reducing agents are placed in batch mixer, under the conditions of revolving speed is 200r/min, and
It is passed through the magnetic field of 50T in whipping process, is stirred 60min, obtains mixed slurry, then sprays scrap machine to die surface
Oil then injects mixed slurry in mold, stands for 24 hours, and demoulding obtains blank, then blank is placed in steam-cured kettle, in temperature
It is 185 DEG C, pressure 1.2MPa, after high temperature and pressure conserves 8h, under room temperature, conserves for 24 hours to get bend resistance calcium silicates
Plate.The cement is portland cement.The water-reducing agent is sodium lignin sulfonate.The low-melting alloy is bismuth tin alloy, bismuth
Each component mass content in tin alloy are as follows: bismuth accounts for 51%(ω), tin accounts for 30%(ω), lead accounts for 8%(ω), indium accounts for 11%(ω).
According to parts by weight, by 3 parts of cellulases, 3 parts of pectases, 30 parts of water, 5 parts of glycerol are placed in No. 1 beaker, and are incited somebody to action
No. 1 beaker is placed in digital display and tests the speed in constant temperature blender with magnetic force, is 32 DEG C in temperature, under the conditions of revolving speed is 300r/min, constant temperature is stirred
Mixing 60min is mixed, mixed enzyme solution is obtained；Diatomite is placed in ball mill grinding in ball mill, the sieve of 100 mesh is crossed, obtains refinement diatomite,
Then refinement diatomite is placed in Muffle furnace, under the conditions of temperature is 650 DEG C, after roasting 2h, is down to room temperature with furnace, obtains pre- place
Diatomite is managed, according to parts by weight, by 30 parts of pretreatment diatomite, 20 parts of starch, 8 parts of silicone oil are placed in mixing and ball milling in ball mill
After 60min, the sieve of 120 mesh is crossed, ball milling material is obtained, then ball milling material is placed in retort, and furnace is want with the rate of 90mL/min
It is inside filled with nitrogen, under the conditions of temperature is 750 DEG C, 3h is carbonized, obtains modification infusorial earth；According to parts by weight, by 60 parts of cement, 80
Part modification infusorial earth, 30 parts of wood-fibreds, 60 parts of water, 20 parts of pretreatment additives, 3 parts of water-reducing agents are placed in batch mixer, in revolving speed
Under the conditions of 200r/min, and be passed through in whipping process the magnetic field of 50T, be stirred 60min, obtain mixed slurry, then to
Die surface sprays discarded machine oil, then injects mixed slurry in mold, stands for 24 hours, and demoulding obtains blank, then by blank
It is placed in steam-cured kettle, is 185 DEG C, pressure 1.2MPa in temperature, after high temperature and pressure conserves 8h, under room temperature, conserves
For 24 hours to get bend resistance calcium silicate board.The cement is portland cement.The water-reducing agent is sodium lignin sulfonate.
According to parts by weight, by 3 parts of cellulases, 3 parts of pectases, 30 parts of water, 5 parts of glycerol are placed in No. 1 beaker, and are incited somebody to action
No. 1 beaker is placed in digital display and tests the speed in constant temperature blender with magnetic force, is 32 DEG C in temperature, under the conditions of revolving speed is 300r/min, constant temperature is stirred
Mixing 60min is mixed, mixed enzyme solution is obtained；Diatomite is placed in ball mill grinding in ball mill, the sieve of 100 mesh is crossed, obtains refinement diatomite,
Then refinement diatomite is placed in Muffle furnace, under the conditions of temperature is 650 DEG C, after roasting 2h, is down to room temperature with furnace, obtains pre- place
Diatomite is managed, according to parts by weight, by 30 parts of pretreatment diatomite, 20 parts of starch, 8 parts of silicone oil are placed in mixing and ball milling in ball mill
After 60min, the sieve of 120 mesh is crossed, ball milling material is obtained, then ball milling material is placed in retort, and furnace is want with the rate of 90mL/min
It is inside filled with nitrogen, under the conditions of temperature is 750 DEG C, 3h is carbonized, obtains modification infusorial earth；Wood-fibred is placed in pulverizer and is crushed,
The sieve for crossing 120 mesh obtains pretreatment wood-fibred；Pretreatment wood-fibred and mixed enzyme solution 1:20 in mass ratio are placed in No. 2 beakers,
It is that 300r/min after constant temperature is stirred 60min, is warming up to 90 DEG C of enzyme deactivations, obtains mixing slurry under the conditions of temperature is 32 DEG C in revolving speed
Liquid, then mixed serum is filtered, filter cake is obtained, then filter cake is washed with deionized 8 times, is then placed in the filter cake after washing
It is dry to constant weight under the conditions of temperature is 110 DEG C in baking oven, obtain single treatment wood-fibred；According to parts by weight, by 30 part one
Secondary processing wood-fibred, 5 parts of bacteria residues, 3 parts of urea, 30 parts of water are placed in fermentation cauldron, are 32 DEG C in temperature, revolving speed is 200r/min item
Under part, it is stirred fermentation 5 days, the iron nitrate solution that mass fraction is 20% is then added into fermentation cauldron, then to fermentation cauldron
It is middle that the sodium hydroxide solution adjusting pH to 7.4 that mass fraction is 30% is added, mixed fermentation liquid is obtained, then by mixed fermentation liquid mistake
Filter, obtains filter residue, then then the filter residue after washing is placed in baking oven, is in temperature by residue washing 8 times with deionized water
It is dry to obtain dry filter residue to constant weight, then dry filter residue is placed in sintering furnace under the conditions of 110 DEG C, and with 120mL/min speed
Rate inflates argon gas into furnace, and under the conditions of temperature is 1300 DEG C, after carbonizing 3h, it is fine to get secondary treatment wood to be down to room temperature with furnace
Dimension；Then secondary treatment wood-fibred is placed in reaction kettle, high-temperature high-pressure steam is then passed through into reaction kettle, be in temperature
315 DEG C, pressure be 1.2MPa under the conditions of, handle 5h, must handle material, then will processing expect be placed in baking oven, in temperature be 110 DEG C
Under the conditions of, it is dry to constant weight, obtain modified wood-fibred；According to parts by weight, by 60 parts of cement, 80 parts of modification infusorial earths, 30 parts change
Property wood-fibred, 60 parts of water, 3 parts of water-reducing agents are placed in batch mixer, lead under the conditions of revolving speed is 200r/min, and in whipping process
The magnetic field for entering 50T, is stirred 60min, obtains mixed slurry, then discarded machine oil is sprayed to die surface, then by mixing slurry
It in material injection mold, stands for 24 hours, demoulding obtains blank, then blank is placed in steam-cured kettle, is 185 DEG C in temperature, pressure is
1.2MPa after high temperature and pressure conserves 8h, under room temperature, is conserved for 24 hours to get bend resistance calcium silicate board.The cement is silicon
Acid salt cement.The water-reducing agent is sodium lignin sulfonate.The low-melting alloy is bismuth tin alloy, each group sub-prime in bismuth tin alloy
Measure content are as follows: bismuth accounts for 51%(ω), tin accounts for 30%(ω), lead accounts for 8%(ω), indium accounts for 11%(ω).
According to parts by weight, by 3 parts of cellulases, 3 parts of pectases, 30 parts of water, 5 parts of glycerol are placed in No. 1 beaker, and are incited somebody to action
No. 1 beaker is placed in digital display and tests the speed in constant temperature blender with magnetic force, is 32 DEG C in temperature, under the conditions of revolving speed is 300r/min, constant temperature is stirred
Mixing 60min is mixed, mixed enzyme solution is obtained；Diatomite is placed in ball mill grinding in ball mill, the sieve of 100 mesh is crossed, obtains refinement diatomite,
Then refinement diatomite is placed in Muffle furnace, under the conditions of temperature is 650 DEG C, after roasting 2h, is down to room temperature with furnace, obtains pre- place
Diatomite is managed, according to parts by weight, by 30 parts of pretreatment diatomite, 20 parts of starch, 8 parts of silicone oil are placed in mixing and ball milling in ball mill
After 60min, the sieve of 120 mesh is crossed, ball milling material is obtained, then ball milling material is placed in retort, and furnace is want with the rate of 90mL/min
It is inside filled with nitrogen, under the conditions of temperature is 750 DEG C, 3h is carbonized, obtains modification infusorial earth；Nanometer iron powder and low-melting alloy are pressed into matter
Amount is placed in crucible after consolute than 1:15, and cooled and solidified obtains coagulated mass, then crushes coagulated mass to get pretreatment additive；
Wood-fibred is placed in pulverizer and is crushed, the sieve of 120 mesh is crossed, obtains pretreatment wood-fibred；It will pretreatment wood-fibred and mixed enzyme solution
1:20 in mass ratio is placed in No. 2 beakers, is 300r/min in revolving speed, under the conditions of temperature is 32 DEG C, constant temperature is stirred 60min
Afterwards, 90 DEG C of enzyme deactivations are warming up to, mixed serum is obtained, then mixed serum is filtered, obtains filter cake, then filter cake is washed with deionized
8 times, then the filter cake after washing is placed in baking oven, it is dry to constant weight under the conditions of temperature is 110 DEG C, obtain single treatment wood
Fiber；According to parts by weight, by 30 parts of single treatment wood-fibreds, 5 parts of bacteria residues, 3 parts of urea, 30 parts of water are placed in fermentation cauldron, in
Temperature is 32 DEG C, under the conditions of revolving speed is 200r/min, is stirred fermentation 5 days, and mass fraction is then added into fermentation cauldron and is
The sodium hydroxide solution that mass fraction is 30% is then added into fermentation cauldron and adjusts pH to 7.4, obtains mixed for 20% iron nitrate solution
Fermentation liquid is closed, then mixed fermentation liquid is filtered, obtains filter residue, then with deionized water by residue washing 8 times, after then washing
Filter residue be placed in baking oven, it is dry to constant weight under the conditions of temperature is 110 DEG C, obtain dry filter residue, be then placed in dry filter residue
In sintering furnace, and argon gas is inflated into furnace with 120mL/min rate, under the conditions of temperature is 1300 DEG C, after carbonizing 3h, is dropped with furnace
To room temperature to get secondary treatment wood-fibred；Then secondary treatment wood-fibred is placed in reaction kettle, is then passed through into reaction kettle
High-temperature high-pressure steam is 315 DEG C in temperature, under the conditions of pressure is 1.2MPa, handles 5h, must handle material, then expect processing
It is placed in baking oven, it is dry to constant weight under the conditions of temperature is 110 DEG C, obtain modified wood-fibred；According to parts by weight, by 60 parts of water
Mud, 80 parts of modification infusorial earths, 30 parts of modified wood-fibreds, 60 parts of water, 20 parts of pretreatment additives, 3 parts of water-reducing agents are placed in batch mixer
In, it is stirred 60min under the conditions of revolving speed is 200r/min, obtains mixed slurry, then sprays discarded machine oil to die surface,
Then mixed slurry is injected in mold, is stood for 24 hours, demoulding obtains blank, then blank is placed in steam-cured kettle, is in temperature
It 185 DEG C, pressure 1.2MPa, after high temperature and pressure conserves 8h, under room temperature, conserves for 24 hours to get bend resistance calcium silicate board.
The cement is portland cement.The water-reducing agent is sodium lignin sulfonate.The low-melting alloy is bismuth tin alloy, and bismuth tin closes
Each component mass content in gold are as follows: bismuth accounts for 51%(ω), tin accounts for 30%(ω), lead accounts for 8%(ω), indium accounts for 11%(ω).
Comparative example: the bend resistance calcium silicate board of Foshan material production Co., Ltd production.
Example 1 to the resulting bend resistance calcium silicate board of example 5 and comparative example product are subjected to performance detection, specific detection side
Method is as follows:
The flexural strength of above-mentioned calcium silicate board is detected according to GB/T7019.
Specific testing result is as shown in table 1:
The 1 specific testing result of bend resistance calcium silicate board of table
| Detection project | Example 1 | Example 2 | Example 3 | Example 4 | Example 5 | Comparative example |
| Flexural strength/MPa | 16.1 | 13.9 | 11.2 | 10.8 | 10.3 | 8.6 |
By 1 testing result of table it is found that the bend resistance calcium silicate board of technical solution of the present invention preparation has excellent mechanical property
Feature has broad prospects in the development of building material technology industry.
Claims (7)
1. a kind of preparation method of bend resistance calcium silicate board, it is characterised in that specific preparation process is as follows:
(1) wood-fibred is crushed, crosses the sieve of 120 mesh, obtains pretreatment wood-fibred；
(2) pretreatment wood-fibred being stirred with mixed enzyme solution 1:10~1:20 constant temperature in mass ratio, enzyme deactivation is filtered, washing,
It is dry, obtain single treatment wood-fibred；
(3) according to parts by weight, by 20~30 parts of single treatment wood-fibreds, 3~5 parts of bacteria residues, 2~3 parts of urea, 20~30 parts of water
Mixed fermentation is subsequently added into iron nitrate solution, is subsequently added into sodium hydroxide solution and adjusts pH to 8.1~7.4, filter, wash, does
It is dry, it carbonizes to get secondary treatment wood-fibred；
(4) secondary treatment wood-fibred is handled using high-temperature water vapor, it is dry, obtain modified wood-fibred；
(5) according to parts by weight, by 40~60 parts of cement, 60~80 parts of modification infusorial earths, 20~30 parts of modified wood-fibreds, 40~
60 parts of water, 10~20 parts of pretreatment additives, 2~3 parts of water-reducing agents are stirred, and magnetic field is passed through in whipping process, injection molding,
It stands, demoulding, high temperature and pressure maintenance, room temperature conserves to get bend resistance calcium silicate board.
2. a kind of preparation method of bend resistance calcium silicate board according to claim 1, it is characterised in that: step (2) is described mixed
Synthase liquid is made of the raw material of following parts by weight: 2~3 parts of cellulases, 2~3 parts of pectases, 20~30 parts of water, and 2~5
Part glycerol.
3. a kind of preparation method of bend resistance calcium silicate board according to claim 1, it is characterised in that: step (5) described water
Mud is portland cement, any one in aluminate cement or sulfate cement.
4. a kind of preparation method of bend resistance calcium silicate board according to claim 1, it is characterised in that: step (5) is described to be changed
Property diatomite preparation process are as follows: diatomite is crushed, be sieved, roast, cooling, obtain pretreatment diatomite, according to parts by weight,
By 20~30 parts of pretreatment diatomite, 10~20 parts of starch, 5~8 parts of silicone oil mixing and ball millings are sieved, and charing obtains modified diatom
Soil.
5. a kind of preparation method of bend resistance calcium silicate board according to claim 1, it is characterised in that: step (5) is described pre-
Handle the preparation process of additive are as follows: by nanometer iron powder and low-melting alloy 1:10~1:15 consolute in mass ratio, cooled and solidified,
It crushes to get pretreatment additive.
6. a kind of preparation method of bend resistance calcium silicate board according to claim 1, it is characterised in that: step (5) is described to be subtracted
Aqua is sodium lignin sulfonate, any one in TH-928 poly carboxylic acid series water reducer or YZ-1 naphthalene series high-efficiency water-reducing agent.
7. a kind of preparation method of bend resistance calcium silicate board according to claim 1, it is characterised in that: step (5) described height
Warm high-pressure curing condition are as follows: temperature is 175~185 DEG C, and pressure is 0.8~1.2MPa.
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| CN112573887A (en) * | 2020-12-28 | 2021-03-30 | 广东雄塑环保板业有限公司 | High-strength calcium silicate board and preparation process thereof |
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