CN109734387A - A kind of preparation method of anti-folding bamboo pulp cement plate - Google Patents
A kind of preparation method of anti-folding bamboo pulp cement plate Download PDFInfo
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Abstract
The invention discloses a kind of preparation methods of anti-folding bamboo pulp cement plate, belong to building material technical field.The present invention filters bamboo pulp, secondary settling tank sludge, sucrose, water mixed fermentation, freezes, and crushes, and sieving obtains modified bamboo pulp；Starch and water are stirred, salt acid for adjusting pH is then added dropwise, is subsequently added into liquor potassic permanganate, is stirred, sodium hydroxide solution is then added and is mixed, obtains pretreated starch liquid；By cement, flyash, silicon ash, modified bamboo pulp, pretreated starch liquid, modified aggregate, silane coupling agent, water-reducing agent, modified additive, water, sawdust, unsaturated polyester resin, drying oil are stirred, injection molding is stood, demoulding, and high temperature and pressure maintenance, natural curing is to get anti-folding bamboo pulp cement plate.Anti- folding bamboo pulp cement plate provided by the invention has excellent mechanical property.
Description
Technical field
The invention discloses a kind of preparation methods of anti-folding bamboo pulp cement plate, belong to building material technical field.
Background technique
Fiber cement board, also known as fiber reinforced cement board, be produced using fiber and cement as main raw material(s) it is for building
Cement board is widely used in the every field of building trade with its superior performance.Divide by inner fiber: most of at present
It is all that asbestos fibre plays humidification, this fiber cement board is just called chrysotile asbestos fibre cement board；Another is just
It is free from asbestos fibre, with paper pulp, sawdust, glass fibre play all general designations of humidification without asbestos fibre to substitute asbestos fibre
Tie up cement board.Pressing force is divided: whether there is or not points of pressing plate and pressure plare.The fiber cement board of middle low-density is all no pressing plate, high
Density is pressure plare.Pressure plare is also known as fiber cement board pressure, and special press is needed to produce.Fiber cement board has matter
Gently, the advantages of high rigidity, but its also to have the shortcomings that resistance to stress weak, breakable, therefore make it in the field of building materials
Using being restricted, and the prior art is there is no solving that fiber cement board resistance to stress is weak, breakable effective way.
Plant fiber is added during cement plate base, can not only overcome the shortcomings of that ordinary cement product is easy drying shrinkage,
It may also function as the effect of enhancing.American-European countries mostly uses the long 2.70~3.05mm of fiber, the coniferous wood wood pulp based on pine,
There is preferable interfacial adhesion between fiber and cement after bleaching；The fiber handled using alkali resistant, can improve the alkali resistant of plate
Property.Broad-leaved wood wood pulp cellulose grows 0.5~2.5mm, and reinforcing effect is not so good as coniferous wood.In the 1980s, cement research institute
Fiber cement board is prepared using market pulp, successfully instead of asbestos fibre cement plate, and is applied in production.Fiber
Cement plate has two kinds of forming methods of wet process and semidry method, and traditional asbestos fibre cement plate is using wet forming, semi-dry pressing
Technique report is less, but the technique can save and largely use water.In recent years, the development and utilization of bamboo fibre is rapidly developed, but
The research for preparing fiber cement board using bamboo fibre is few.There is researcher using bamboo pulp fiber, cement and quartz sand, is respectively adopted
Wet process and semidry process are prepared for fiber cement board, and compare the performance of 2 kinds of fibers and 2 kinds of processes for forming cellulose cement plates
Difference provides technical basis for industrial application in the future.Wet laid fiber cement plate: first suitable water and fiber are stirred
After uniformly, then mix with cement (or cement+quartz sand) slurry, and stirring is to no agglomeration.Mixed slurry is poured into shaping frame
It paves, after first one-step forming, puts into a press and be depressed into predetermined density.Slab is put into clamp frame after release and is clamped, plastic foil is used
8h is placed in sealing in 80 DEG C of drying boxes, is placed in steam-cured kettle again after removing clamp frame, steam-cured 8h under the conditions of 160 DEG C, through one
Week measures its physical and mechanical property after spontaneously drying.Semidry method fiber cement board: fiber moisture about 250%, with cement mixing
Afterwards, it adds a small amount of water to stir evenly, slurry is layered in shaping frame.It is placed in press and is depressed into predetermined density, put after release
Enter in clamp frame and clamp, with plastic film seal, and a certain amount of water is added in plastic foil, forms high humidity environment.At 80 DEG C
Maintenance 8h removes clamp frame, then measures plate property after natural curing in about one week.
But the problem that anti-folding bamboo pulp cement plate traditional at present is bad there is also mechanical property, therefore also need to carry out it
Research.
Summary of the invention
The present invention solves the technical problem of: the bad problem of bamboo pulp cement plate mechanical property is rolled over for tradition is anti-,
Provide a kind of preparation method of anti-folding bamboo pulp cement plate.
In order to solve the above-mentioned technical problem, the technical scheme adopted by the invention is that:
(1) according to parts by weight, by 20~30 parts of bamboo pulps, 1~2 part of secondary settling tank sludge, 1~2 portion of sucrose, 30~50 parts of water mixing
Fermentation is filtered, and is freezed, and is crushed, and is crossed the sieve of 300 mesh, is obtained modified bamboo pulp；
(2) starch and water 1:10~1:20 in mass ratio are stirred, then dropwise addition salt acid for adjusting pH to 2.1~2.4, then
0.05~0.08 times of starch quality of liquor potassic permanganate is added, is stirred, is then added 0.1~0.2 times of starch quality
Sodium hydroxide solution is mixed, and obtains pretreated starch liquid；
(3) according to parts by weight, by 40~60 parts of cement, 5~8 parts of flyash, 5~8 parts of silicon ashes, 10~20 parts of modified bamboo pulps,
10~20 parts of pretreated starch liquid, 10~20 parts of modified aggregates, 3~5 parts of silane coupling agents, 3~5 parts of water-reducing agents, 3~5 parts change
Property additive, 30~40 parts of water, 2~3 parts of sawdusts, 2~3 parts of unsaturated polyester resins, 2~3 parts of drying oil are stirred, and infuse
Mould is stood, demoulding, and high temperature and pressure maintenance, natural curing is to get anti-folding bamboo pulp cement plate.
Step (2) starch is cornstarch, any one in potato starch or tapioca.
Step (3) cement is portland cement, any one in aluminate cement or sulfate cement.
Step (3) the modified aggregate processing process are as follows: stir medical stone and hydrochloric acid 1:10~1:20 in mass ratio
Mixing is filtered, and is washed, dry, obtains pretreatment medical stone, according to parts by weight, by 20~30 parts of pretreatment medical stones, 10~20
Part lard, 0.2~0.3 part of lipase, 20~30 parts of ethylene glycol, 10~20 parts of ethyl orthosilicates, heating stirring reaction, filtering,
Washing, it is dry, obtain modified aggregate.
Step (3) silane coupling agent is silane resin acceptor kh-550, silane coupling agent KH-560 or silane coupling agent
Any one in KH-570.
Step (3) 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.
The preparation process of step (3) described modified additive are as follows: by graphene oxide and water 1:20~1:30 in mass ratio
Mixing, ultrasonic disperse are then added dropwise ammonium hydroxide and adjust pH to 9.8~10.1, obtain Pretreatment Mixed Liauid, tossa is crushed, mistake
The sieve of 80 mesh obtains tossa powder, according to parts by weight, 20~30 parts of tossa powder, 8~10 parts of cellulases, 40~60
Part water stirring constant temperature processing, enzyme deactivation obtain tossa mixed liquor, in mass ratio with tossa mixed liquor by Pretreatment Mixed Liauid
1:5~1:10 mixing oscillation, is filtered, washing, dry to get modified additive.
Step (3) sawdust be poplar bits, pine sawdust, birch bits, mahogany bits in any one.
Step (3) unsaturated polyester resin is m-phthalate unsaturated polyester resin, metaphenylene unsaturated polyester resin
Or any one in Bisphenol a unsaturated polyester resin.
Step (3) drying oil is tung oil, any one in Chinese catalpa oil or linseed oil.
The beneficial effects of the present invention are:
(1) present invention is by addition modified additive and modified bamboo pulp, in modified additive preparation process, firstly, will locate in advance
Reason mixed liquor is mixed with tossa mixed liquor, and ammonium hydroxide is then added dropwise and adjusts pH, due to graphene oxide layer structure edge
Containing carboxyl, ammonium hydroxide enables to the carboxylic ions on graphene oxide edge, keeps its negatively charged, negatively charged oxidation
Electrostatic repulsion is generated between graphene, enables graphene oxide is good to be dispersed in system, secondly, tossa and oxygen
Hydrogenbond is easily formed between graphite alkene lamellar structure, is formed again so that being formed in system between graphene oxide sheet and tossa
Structure is closed, secondly, in the preparation process of modified bamboo pulp, it is fine to decompose bamboo pulp for the enzyme generated using microorganism in secondary settling tank sludge
Organic matter in dimension, so that being conducive to moisture enters bamboo pulp fiber, connects so that the gap between bamboo pulp fiber and bamboo pulp fiber increases
By freezing so that the gap moisture between bamboo pulp fiber and bamboo pulp fiber build-ups ice, using ball mill ball milling, so that ice crystal
Be under pressure and rupture so that bamboo pulp fiber split into micro/nano level fibrous crystal must, the fibrous crystal of micro/nano level must have compared with
High draw ratio, after being added in system, so that the mechanical property of system gets a promotion, in use, since modification is filled out
Expect that surface oxidation graphene has negative electrical charge, is capable of the modification bamboo pulp of micro/nano level in attraction system, so that micro/nano level
Bamboo pulp fiber good can be dispersed in system, so that system mechanical property is further promoted；
(2) present invention is by adding modified aggregate, during the preparation process, firstly, medical stone and mixed in hydrochloric acid are impregnated, so that wheat
Hole in meal stone is further widened, and then, will pre-process medical stone, lard, lipase, ethylene glycol, positive silicic acid second
Ester is stirred to react, and lard decomposes under the catalytic action of lipase, so that lard, which decomposes, generates fatty acid, fatty acid and ethylene glycol
Under the high temperature conditions, esterification occurs, generates water, the water of the generation in system is reacted with ethyl orthosilicate, generates nanometer two
The nano silica of silica, generation has good absorption property, can enter by macropore inside pretreatment medical stone,
And be filled in inside medical stone, so that the packed density inside medical stone gets a promotion, in use, with hydrated cementitious
The progress of process enables to the nanometer titanium dioxide pasc reaction in modified aggregate to generate silicic acid so that the pH of system gradually rises
Sodium forms sodium metasilicate network in system, is connected with modified aggregate in sodium metasilicate network, aggregate can be effectively prevent to sink, had
Conducive to the dispersion of aggregate, due to the fine dispersion of aggregate, so that the mechanical property of system is further promoted.
Specific embodiment
Hydrochloric acid 1:10~1:20 in mass ratio that medical stone and mass fraction are 20~30% is placed in No. 1 beaker, in turning
Under the conditions of speed is 300~500r/min, it is stirred 40~60min, mixed serum is obtained, then filters mixed serum, must be filtered
Cake, Washing of Filter Cake to cleaning solution is neutral by the ammonium hydroxide for being 20~30% with mass fraction, then the filter cake after washing is placed in baking oven
In, it is dry to constant weight under the conditions of temperature is 105~110 DEG C, pretreatment medical stone is obtained, according to parts by weight, by 20~30 parts
Pre-process medical stone, 10~20 parts of lards, 0.2~0.3 part of lipase, 20~30 parts of ethylene glycol, 10~20 parts of ethyl orthosilicates
It is placed in three-necked flask, and three-necked flask is placed in digital display and is tested the speed in constant temperature blender with magnetic force, be 140~160 DEG C in temperature, turn
Under the conditions of speed is 400~600r/min, after heating stirring reacts 1~2h, mixture slurry is obtained, then filters mixture slurry, obtains 1
Number filter residue, then with deionized water by No. 1 residue washing 5~8 times, then No. 1 filter residue after washing is placed in baking oven, Yu Wen
It is dry to constant weight under the conditions of degree is 105~110 DEG C, obtain modified aggregate；By graphene oxide and water 1:20~1:30 in mass ratio
It is placed in No. 2 beakers, and No. 2 beakers is placed in ultrasonic disperse instrument, under the conditions of supersonic frequency is 55~75kHz, ultrasound point
40~60min is dissipated, the ammonium hydroxide that mass fraction is 20~30% is then added dropwise into No. 2 beakers and adjusts pH to 9.8~10.1, obtains pre-
Mixed liquor is handled, tossa is placed in pulverizer and is crushed, the sieve of 80 mesh is crossed, obtains tossa powder, according to parts by weight, 20
~30 parts of tossa powder, 8~10 parts of cellulases, 40~60 parts of water are placed in No. 3 beakers, are 30~35 DEG C in temperature, are turned
Under the conditions of speed is 300~500r/min, after stirring constant temperature handles 40~60min, 90~95 DEG C of 20~30min of enzyme deactivation are warming up to,
Tossa mixed liquor is obtained, Pretreatment Mixed Liauid and tossa mixed liquor 1:5~1:10 in mass ratio are placed in vortex oscillation
5~10min is shaken in device, is obtained mixed serum, is then filtered mixed serum, obtain No. 2 filter residues, then with deionized water by No. 2
Residue washing 3~5 times, then No. 2 filter residues after washing are placed in baking oven, it is dry under the conditions of temperature is 105~110 DEG C
To constant weight to get modified additive；According to parts by weight, by 20~30 parts of bamboo pulps, 1~2 part of secondary settling tank sludge, 1~2 part of sugarcane
Sugar, 30~50 parts of water are placed in fermentation cauldron, in temperature be 30~35 DEG C, revolving speed be 100~200r/min under the conditions of, mixed fermentation
3~5 days, fermentation mixed liquor is obtained, will then be filtered, and be obtained No. 3 filter residues, then No. 3 filter cakes are placed in liquid nitrogen and are freezed, must freeze
Freezing material is then placed in ball mill and crushes, crosses the sieve of 300 mesh, obtain modified bamboo pulp by material；By starch and water 1:10 in mass ratio
~1:20 is placed in No. 4 beakers, under the conditions of revolving speed is 300~500r/min, is stirred 40~60min, is then used rubber head
Dropper the salt acid for adjusting pH that mass fraction is 20~30% is added dropwise into No. 4 beakers to 2.1~2.4, then into No. 4 beakers plus
Enter 0.05~0.08 times of mass fraction of starch quality be 8~10% liquor potassic permanganate, in revolving speed be 300~500r/min item
Under part, it is stirred 40~60min, is 10~20% then to 0.1~0.2 times of mass fraction of starch quality is added in No. 4 beakers
Sodium hydroxide solution, in revolving speed be 300~500r/min under the conditions of, be stirred 40~60min to get pretreated starch
Liquid；According to parts by weight, by 40~60 parts of cement, 5~8 parts of flyash, 5~8 parts of silicon ashes, 10~20 parts of modified bamboo pulps, 10~
20 parts of pretreated starch liquid, 10~20 parts of modified aggregates, 3~5 parts of silane coupling agents, 3~5 parts of water-reducing agents, 3~5 parts of modifications add
Add agent, 30~40 parts of water, 2~3 parts of sawdusts, 2~3 parts of unsaturated polyester resins, 2~3 parts of drying oil are placed in batch mixer, in turning
Under the conditions of speed is 100~200r/min, it is stirred 40~60min, obtains mixed slurry, discarded machine oil is then sprayed at mold
Surface, then will mixed slurry inject mold in, stand 18~for 24 hours after, demoulding, obtain slab, slab be then placed in steam-cured kettle
In, in temperature be 160~180 DEG C, pressure be 1.2~1.8MPa under the conditions of, high temperature and pressure conserve 5~8h after, in room temperature condition
28~46h of lower natural curing is to get anti-folding bamboo pulp cement plate.The starch is cornstarch, potato starch or tapioca
In any one.The cement is portland cement, any one in aluminate cement or sulfate cement.The silane
Coupling agent is silane resin acceptor kh-550, any one in silane coupling agent KH-560 or Silane coupling reagent KH-570.It is described
Water-reducing agent 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.Institute
Sawdust is stated as poplar bits, pine sawdust, birch is considered to be worth doing, any one in mahogany bits.The unsaturated polyester resin be adjacent benzene-type not
Any one in saturated polyester resin, metaphenylene unsaturated polyester resin or Bisphenol a unsaturated polyester resin.The drying oil
Any one for tung oil, in Chinese catalpa oil or linseed oil.
Example 1
The hydrochloric acid 1:20 in mass ratio that medical stone and mass fraction are 30% is placed in No. 1 beaker, in revolving speed be 500r/min item
Under part, it is stirred 60min, mixed serum is obtained, then filters mixed serum, obtain filter cake, the ammonium hydroxide for being 30% with mass fraction
It is neutrality by Washing of Filter Cake to cleaning solution, then the filter cake after washing is placed in baking oven, it is dry under the conditions of temperature is 110 DEG C
To constant weight, pretreatment medical stone is obtained, according to parts by weight, by 30 parts of pretreatment medical stones, 20 parts of lards, 0.3 part of lipase, 30
Part ethylene glycol, 20 parts of ethyl orthosilicates are placed in three-necked flask, and three-necked flask is placed in digital display and is tested the speed constant temperature blender with magnetic force
In, it is 160 DEG C in temperature, under the conditions of revolving speed is 600r/min, after heating stirring reacts 2h, obtains mixture slurry, it then will mixing
Slurry by filtration obtains No. 1 filter residue, then with deionized water by No. 1 residue washing 8 times, No. 1 filter residue after washing is then placed in baking
It is dry to constant weight under the conditions of temperature is 110 DEG C in case, obtain modified aggregate；Graphene oxide and water 1:30 in mass ratio are set
It is placed in ultrasonic disperse instrument in No. 2 beakers, and by No. 2 beakers, under the conditions of supersonic frequency is 75kHz, ultrasonic disperse
The ammonium hydroxide that mass fraction is 30% is then added dropwise into No. 2 beakers and adjusts pH to 10.1, obtains Pretreatment Mixed Liauid by 60min, will be yellow
Flaxen fiber is placed in pulverizer and crushes, and crosses the sieve of 80 mesh, obtains tossa powder, according to parts by weight, 30 parts of tossa powder, 10
Part cellulase, 60 parts of water are placed in No. 3 beakers, are 35 DEG C in temperature, under the conditions of revolving speed is 500r/min, stirring constant temperature is handled
After 60min, 95 DEG C of enzyme deactivation 30min are warming up to, tossa mixed liquor is obtained, Pretreatment Mixed Liauid and tossa mixed liquor are pressed
Mass ratio 1:10, which is placed in vortex oscillator, shakes 10min, obtains mixed serum, then filters mixed serum, obtains No. 2 filter residues,
Then with deionized water by No. 2 residue washing 5 times, then No. 2 filter residues after washing are placed in baking oven, in temperature be 110 DEG C
Under the conditions of, drying is to constant weight to get modified additive；According to parts by weight, by 30 parts of bamboo pulps, 2 parts of secondary settling tank sludge, 2 parts of sugarcanes
Sugar, 50 parts of water are placed in fermentation cauldron, are 35 DEG C in temperature, under the conditions of revolving speed is 200r/min, mixed fermentation 5 days, must be fermented mixed
Liquid is closed, will then be filtered, and be obtained No. 3 filter residues, then No. 3 filter cakes are placed in liquid nitrogen and are freezed, material must be freezed, then sets freezing material
It is crushed in ball mill, crosses the sieve of 300 mesh, obtain modified bamboo pulp；Starch and water 1:20 in mass ratio are placed in No. 4 beakers, in
Under the conditions of revolving speed is 500r/min, it is stirred 60min, it is 30% that mass fraction is then added dropwise into No. 4 beakers with rubber head dropper
Salt acid for adjusting pH to 2.4, it is molten that the potassium permanganate that 0.08 times of mass fraction of starch quality is 10% is then added into No. 4 beakers
Liquid is stirred 60min under the conditions of revolving speed is 500r/min, then to addition 0.2 times of quality of starch quality in No. 4 beakers
The sodium hydroxide solution that score is 20% is stirred 60min under the conditions of revolving speed is 500r/min to get pretreated starch
Liquid；According to parts by weight, by 60 parts of cement, 8 parts of flyash, 8 parts of silicon ashes, 20 parts of modified bamboo pulps, 20 parts of pretreated starch liquid, 20
The modified aggregate of part, 5 parts of silane coupling agents, 5 parts of water-reducing agents, 5 parts of modified additives, 40 parts of water, 3 parts of sawdusts, 3 parts of unsaturated polyester (UP)s
Resin, 3 parts of drying oil are placed in batch mixer, under the conditions of revolving speed is 200r/min, is stirred 60min, is obtained mixed slurry, connect
Discarded machine oil is sprayed at die surface, then by mixed slurry inject mold in, stand for 24 hours after, demoulding, obtain slab, connect
Slab is placed in steam-cured kettle, in temperature be 180 DEG C, pressure be 1.8MPa under the conditions of, high temperature and pressure conserve 8h after, in room temperature
Under the conditions of natural curing 46h to get anti-folding bamboo pulp cement plate.The starch is cornstarch.The cement is portland cement.
The silane coupling agent is silane resin acceptor kh-550.The water-reducing agent is sodium lignin sulfonate.The sawdust is poplar bits.Institute
Stating unsaturated polyester resin is m-phthalate unsaturated polyester resin.The drying oil is tung oil.
Example 2
The hydrochloric acid 1:20 in mass ratio that medical stone and mass fraction are 30% is placed in No. 1 beaker, in revolving speed be 500r/min item
Under part, it is stirred 60min, mixed serum is obtained, then filters mixed serum, obtain filter cake, the ammonium hydroxide for being 30% with mass fraction
It is neutrality by Washing of Filter Cake to cleaning solution, then the filter cake after washing is placed in baking oven, it is dry under the conditions of temperature is 110 DEG C
To constant weight, pretreatment medical stone is obtained, according to parts by weight, by 30 parts of pretreatment medical stones, 20 parts of lards, 0.3 part of lipase, 30
Part ethylene glycol, 20 parts of ethyl orthosilicates are placed in three-necked flask, and three-necked flask is placed in digital display and is tested the speed constant temperature blender with magnetic force
In, it is 160 DEG C in temperature, under the conditions of revolving speed is 600r/min, after heating stirring reacts 2h, obtains mixture slurry, it then will mixing
Slurry by filtration obtains No. 1 filter residue, then with deionized water by No. 1 residue washing 8 times, No. 1 filter residue after washing is then placed in baking
It is dry to constant weight under the conditions of temperature is 110 DEG C in case, obtain modified aggregate；Graphene oxide and water 1:30 in mass ratio are set
It is placed in ultrasonic disperse instrument in No. 2 beakers, and by No. 2 beakers, under the conditions of supersonic frequency is 75kHz, ultrasonic disperse
The ammonium hydroxide that mass fraction is 30% is then added dropwise into No. 2 beakers and adjusts pH to 10.1, obtains Pretreatment Mixed Liauid by 60min, will be yellow
Flaxen fiber is placed in pulverizer and crushes, and crosses the sieve of 80 mesh, obtains tossa powder, according to parts by weight, 30 parts of tossa powder, 10
Part cellulase, 60 parts of water are placed in No. 3 beakers, are 35 DEG C in temperature, under the conditions of revolving speed is 500r/min, stirring constant temperature is handled
After 60min, 95 DEG C of enzyme deactivation 30min are warming up to, tossa mixed liquor is obtained, Pretreatment Mixed Liauid and tossa mixed liquor are pressed
Mass ratio 1:10, which is placed in vortex oscillator, shakes 10min, obtains mixed serum, then filters mixed serum, obtains No. 2 filter residues,
Then with deionized water by No. 2 residue washing 5 times, then No. 2 filter residues after washing are placed in baking oven, in temperature be 110 DEG C
Under the conditions of, drying is to constant weight to get modified additive；Starch and water 1:20 in mass ratio are placed in No. 4 beakers, are in revolving speed
Under the conditions of 500r/min, it is stirred 60min, the hydrochloric acid that mass fraction is 30% is then added dropwise into No. 4 beakers with rubber head dropper
Adjust pH to 2.4, then into No. 4 beakers be added 0.08 times of mass fraction of starch quality be 10% liquor potassic permanganate, in turn
Under the conditions of speed is 500r/min, it is stirred 60min, is then to 0.2 times of mass fraction of starch quality is added in No. 4 beakers
20% sodium hydroxide solution is stirred 60min under the conditions of revolving speed is 500r/min to get pretreated starch liquid；By weight
Number meter is measured, by 60 parts of cement, 8 parts of flyash, 8 parts of silicon ashes, 20 parts of pretreated starch liquid, 20 parts of modified aggregates, 5 parts of silane idols
Join agent, 5 parts of water-reducing agents, 5 parts of modified additives, 40 parts of water, 3 parts of sawdusts, 3 parts of unsaturated polyester resins, 3 parts of drying oil are placed in mixed
In material machine, under the conditions of revolving speed is 200r/min, it is stirred 60min, obtains mixed slurry, discarded machine oil is then sprayed at mould
Have surface, then injects mixed slurry in mold, after standing for 24 hours, demoulding obtains slab, then slab is placed in steam-cured kettle,
In temperature be 180 DEG C, pressure be 1.8MPa under the conditions of, high temperature and pressure conserve 8h after, in natural curing 46h under room temperature, i.e.,
Obtain anti-folding bamboo pulp cement plate.The starch is cornstarch.The cement is portland cement.The silane coupling agent is silane
Coupling agent KH-550.The water-reducing agent is sodium lignin sulfonate.The sawdust is poplar bits.The unsaturated polyester resin is neighbour
Benzene-type unsaturated polyester resin.The drying oil is tung oil.
Example 3
The hydrochloric acid 1:20 in mass ratio that medical stone and mass fraction are 30% is placed in No. 1 beaker, in revolving speed be 500r/min item
Under part, it is stirred 60min, mixed serum is obtained, then filters mixed serum, obtain filter cake, the ammonium hydroxide for being 30% with mass fraction
It is neutrality by Washing of Filter Cake to cleaning solution, then the filter cake after washing is placed in baking oven, it is dry under the conditions of temperature is 110 DEG C
To constant weight, pretreatment medical stone is obtained, according to parts by weight, by 30 parts of pretreatment medical stones, 20 parts of lards, 0.3 part of lipase, 30
Part ethylene glycol, 20 parts of ethyl orthosilicates are placed in three-necked flask, and three-necked flask is placed in digital display and is tested the speed constant temperature blender with magnetic force
In, it is 160 DEG C in temperature, under the conditions of revolving speed is 600r/min, after heating stirring reacts 2h, obtains mixture slurry, it then will mixing
Slurry by filtration obtains No. 1 filter residue, then with deionized water by No. 1 residue washing 8 times, No. 1 filter residue after washing is then placed in baking
It is dry to constant weight under the conditions of temperature is 110 DEG C in case, obtain modified aggregate；Graphene oxide and water 1:30 in mass ratio are set
It is placed in ultrasonic disperse instrument in No. 2 beakers, and by No. 2 beakers, under the conditions of supersonic frequency is 75kHz, ultrasonic disperse
The ammonium hydroxide that mass fraction is 30% is then added dropwise into No. 2 beakers and adjusts pH to 10.1, obtains Pretreatment Mixed Liauid by 60min, will be yellow
Flaxen fiber is placed in pulverizer and crushes, and crosses the sieve of 80 mesh, obtains tossa powder, according to parts by weight, 30 parts of tossa powder, 10
Part cellulase, 60 parts of water are placed in No. 3 beakers, are 35 DEG C in temperature, under the conditions of revolving speed is 500r/min, stirring constant temperature is handled
After 60min, 95 DEG C of enzyme deactivation 30min are warming up to, tossa mixed liquor is obtained, Pretreatment Mixed Liauid and tossa mixed liquor are pressed
Mass ratio 1:10, which is placed in vortex oscillator, shakes 10min, obtains mixed serum, then filters mixed serum, obtains No. 2 filter residues,
Then with deionized water by No. 2 residue washing 5 times, then No. 2 filter residues after washing are placed in baking oven, in temperature be 110 DEG C
Under the conditions of, drying is to constant weight to get modified additive；According to parts by weight, by 30 parts of bamboo pulps, 2 parts of secondary settling tank sludge, 2 parts of sugarcanes
Sugar, 50 parts of water are placed in fermentation cauldron, are 35 DEG C in temperature, under the conditions of revolving speed is 200r/min, mixed fermentation 5 days, must be fermented mixed
Liquid is closed, will then be filtered, and be obtained No. 3 filter residues, then No. 3 filter cakes are placed in liquid nitrogen and are freezed, material must be freezed, then sets freezing material
It is crushed in ball mill, crosses the sieve of 300 mesh, obtain modified bamboo pulp；According to parts by weight, by 60 parts of cement, 8 parts of flyash, 8 parts of silicon
Ash, 20 parts of modified bamboo pulps, 20 parts of modified aggregates, 5 parts of silane coupling agents, 5 parts of water-reducing agents, 5 parts of modified additives, 40 parts of water, 3 parts
Sawdust, 3 parts of unsaturated polyester resins, 3 parts of drying oil are placed in batch mixer, under the conditions of revolving speed is 200r/min, are stirred
60min obtains mixed slurry, and discarded machine oil is then sprayed at die surface, then injects mixed slurry in mold, stands
After for 24 hours, demoulding obtains slab, then slab is placed in steam-cured kettle, in temperature be 180 DEG C, it is high under the conditions of pressure is 1.8MPa
After warm high-pressure curing 8h, in natural curing 46h under room temperature to get anti-folding bamboo pulp cement plate.The starch is cornstarch.
The cement is portland cement.The silane coupling agent is silane resin acceptor kh-550.The water-reducing agent is lignin sulfonic acid
Sodium.The sawdust is poplar bits.The unsaturated polyester resin is m-phthalate unsaturated polyester resin.The drying oil is paulownia
Oil.
Example 4
Graphene oxide and water 1:30 in mass ratio are placed in No. 2 beakers, and No. 2 beakers are placed in ultrasonic disperse instrument, in
Under the conditions of supersonic frequency is 75kHz, the ammonium hydroxide tune that mass fraction is 30% is then added dropwise in ultrasonic disperse 60min into No. 2 beakers
PH to 10.1 is saved, Pretreatment Mixed Liauid is obtained, tossa is placed in pulverizer and is crushed, the sieve of 80 mesh is crossed, obtains tossa powder,
According to parts by weight, 30 parts of tossa powder, 10 parts of cellulases, 60 parts of water are placed in No. 3 beakers, are 35 DEG C in temperature, are turned
Under the conditions of speed is 500r/min, after stirring constant temperature processing 60min, 95 DEG C of enzyme deactivation 30min is warming up to, tossa mixed liquor is obtained,
Pretreatment Mixed Liauid and tossa mixed liquor 1:10 in mass ratio are placed in vortex oscillator and shake 10min, obtains mixing slurry
Liquid then filters mixed serum, obtains No. 2 filter residues, then with deionized water by No. 2 residue washing 5 times, then will be after washing
No. 2 filter residues are placed in baking oven, and under the conditions of temperature is 110 DEG C, drying is to constant weight to get modified additive；According to parts by weight,
By 30 parts of bamboo pulps, 2 parts of secondary settling tank sludge, 2 portions of sucrose, 50 parts of water are placed in fermentation cauldron, in temperature be 35 DEG C, revolving speed 200r/
Under the conditions of min, mixed fermentation 5 days, fermentation mixed liquor is obtained, will then be filtered, and be obtained No. 3 filter residues, No. 3 filter cakes are then placed in liquid nitrogen
Middle freezing must freeze material, and then freezing material is placed in ball mill and is crushed, the sieve of 300 mesh is crossed, obtains modified bamboo pulp；By starch with
Water 1:20 in mass ratio is placed in No. 4 beakers, under the conditions of revolving speed is 500r/min, is stirred 60min, is then dripped with rubber head
The salt acid for adjusting pH that mass fraction is 30% is added dropwise into No. 4 beakers to 2.4 for pipe, and starch quality then is added into No. 4 beakers
The liquor potassic permanganate that 0.08 times of mass fraction is 10% is stirred 60min under the conditions of revolving speed is 500r/min, then to
The sodium hydroxide solution that 0.2 times of mass fraction of starch quality is 20% is added in No. 4 beakers, under the conditions of revolving speed is 500r/min,
60min is stirred to get pretreated starch liquid；According to parts by weight, by 60 parts of cement, 8 parts of flyash, 8 parts of silicon ashes, 20 parts
Modified bamboo pulp, 20 parts of pretreated starch liquid, 5 parts of silane coupling agents, 5 parts of water-reducing agents, 5 parts of modified additives, 40 parts of water, 3 parts of wood
Bits, 3 parts of unsaturated polyester resins, 3 parts of drying oil are placed in batch mixer, under the conditions of revolving speed is 200r/min, are stirred
60min obtains mixed slurry, and discarded machine oil is then sprayed at die surface, then injects mixed slurry in mold, stands
After for 24 hours, demoulding obtains slab, then slab is placed in steam-cured kettle, in temperature be 180 DEG C, it is high under the conditions of pressure is 1.8MPa
After warm high-pressure curing 8h, in natural curing 46h under room temperature to get anti-folding bamboo pulp cement plate.The starch is cornstarch.
The cement is portland cement.The silane coupling agent is silane resin acceptor kh-550.The water-reducing agent is lignin sulfonic acid
Sodium.The sawdust is poplar bits.The unsaturated polyester resin is m-phthalate unsaturated polyester resin.The drying oil is paulownia
Oil.
Example 5
The hydrochloric acid 1:20 in mass ratio that medical stone and mass fraction are 30% is placed in No. 1 beaker, in revolving speed be 500r/min item
Under part, it is stirred 60min, mixed serum is obtained, then filters mixed serum, obtain filter cake, the ammonium hydroxide for being 30% with mass fraction
It is neutrality by Washing of Filter Cake to cleaning solution, then the filter cake after washing is placed in baking oven, it is dry under the conditions of temperature is 110 DEG C
To constant weight, pretreatment medical stone is obtained, according to parts by weight, by 30 parts of pretreatment medical stones, 20 parts of lards, 0.3 part of lipase, 30
Part ethylene glycol, 20 parts of ethyl orthosilicates are placed in three-necked flask, and three-necked flask is placed in digital display and is tested the speed constant temperature blender with magnetic force
In, it is 160 DEG C in temperature, under the conditions of revolving speed is 600r/min, after heating stirring reacts 2h, obtains mixture slurry, it then will mixing
Slurry by filtration obtains No. 1 filter residue, then with deionized water by No. 1 residue washing 8 times, No. 1 filter residue after washing is then placed in baking
It is dry to constant weight under the conditions of temperature is 110 DEG C in case, obtain modified aggregate；According to parts by weight, by 30 parts of bamboo pulps, 2 part two
Heavy pond sludge, 2 portions of sucrose, 50 parts of water are placed in fermentation cauldron, are 35 DEG C in temperature, under the conditions of revolving speed is 200r/min, mixing is sent out
Ferment 5 days, fermentation mixed liquor is obtained, will then be filtered, and be obtained No. 3 filter residues, then No. 3 filter cakes are placed in liquid nitrogen and are freezed, material must be freezed,
Then freezing material is placed in ball mill and is crushed, crossed the sieve of 300 mesh, obtain modified bamboo pulp；Starch and water 1:20 in mass ratio are set
In No. 4 beakers, under the conditions of revolving speed is 500r/min, it is stirred 60min, is then dripped with rubber head dropper into No. 4 beakers
Add the salt acid for adjusting pH that mass fraction is 30% to 2.4,0.08 times of mass fraction of starch quality is then added into No. 4 beakers is
10% liquor potassic permanganate is stirred 60min under the conditions of revolving speed is 500r/min, forms sediment then to being added in No. 4 beakers
The sodium hydroxide solution that 0.2 times of mass fraction of silty amount is 20% is stirred 60min under the conditions of revolving speed is 500r/min,
Up to pretreated starch liquid；According to parts by weight, by 60 parts of cement, 8 parts of flyash, 8 parts of silicon ashes, 20 parts of modified bamboo pulps, 20 parts
Pretreated starch liquid, 20 parts of modified aggregates, 5 parts of silane coupling agents, 5 parts of water-reducing agents, 40 parts of water, 3 parts of sawdusts, 3 parts of unsaturations are poly-
Ester resin, 3 parts of drying oil are placed in batch mixer, under the conditions of revolving speed is 200r/min, is stirred 60min, is obtained mixed slurry,
Then discarded machine oil is sprayed at die surface, then injects mixed slurry in mold, after standing for 24 hours, demoulding obtains slab,
Then slab is placed in steam-cured kettle, in temperature be 180 DEG C, pressure be 1.8MPa under the conditions of, high temperature and pressure conserve 8h after, in room
Natural curing 46h is under the conditions of temperature to get anti-folding bamboo pulp cement plate.The starch is cornstarch.The cement is silicate cement
Mud.The silane coupling agent is silane resin acceptor kh-550.The water-reducing agent is sodium lignin sulfonate.The sawdust is poplar
Bits.The unsaturated polyester resin is m-phthalate unsaturated polyester resin.The drying oil is tung oil.
1 to the 5 anti-folding bamboo pulp cement plate of gained of example is subjected to performance detection, the specific detection method is as follows:
Flexural strength and elasticity modulus are detected by GB/T7019, and specific testing result is as shown in table 1:
Table 1: performance detection table
| Detection content | Example 1 | Example 2 | Example 3 | Example 4 | Example 5 |
| Flexural strength/MPa | 33.7 | 25.9 | 27.2 | 26.4 | 25.9 |
| Elasticity modulus/MPa | 13947 | 10629 | 10611 | 10432 | 11031 |
By 1 testing result of table it is found that the anti-folding bamboo pulp cement plate of present invention gained has excellent mechanical property.
Claims (10)
1. a kind of preparation method of anti-folding bamboo pulp cement plate, it is characterised in that specific preparation process is as follows:
(1) according to parts by weight, by 20~30 parts of bamboo pulps, 1~2 part of secondary settling tank sludge, 1~2 portion of sucrose, 30~50 parts of water mixing
Fermentation is filtered, and is freezed, and is crushed, and is crossed the sieve of 300 mesh, is obtained modified bamboo pulp；
(2) starch and water 1:10~1:20 in mass ratio are stirred, then dropwise addition salt acid for adjusting pH to 2.1~2.4, then
0.05~0.08 times of starch quality of liquor potassic permanganate is added, is stirred, is then added 0.1~0.2 times of starch quality
Sodium hydroxide solution is mixed, and obtains pretreated starch liquid；
(3) according to parts by weight, by 40~60 parts of cement, 5~8 parts of flyash, 5~8 parts of silicon ashes, 10~20 parts of modified bamboo pulps,
10~20 parts of pretreated starch liquid, 10~20 parts of modified aggregates, 3~5 parts of silane coupling agents, 3~5 parts of water-reducing agents, 3~5 parts change
Property additive, 30~40 parts of water, 2~3 parts of sawdusts, 2~3 parts of unsaturated polyester resins, 2~3 parts of drying oil are stirred, and infuse
Mould is stood, demoulding, and high temperature and pressure maintenance, natural curing is to get anti-folding bamboo pulp cement plate.
2. a kind of preparation method of anti-folding bamboo pulp cement plate according to claim 1, it is characterised in that: step (2) described shallow lake
Powder is cornstarch, any one in potato starch or tapioca.
3. a kind of preparation method of anti-folding bamboo pulp cement plate according to claim 1, it is characterised in that: step (3) described water
Mud is portland cement, any one in aluminate cement or sulfate cement.
4. a kind of preparation method of anti-folding bamboo pulp cement plate according to claim 1, it is characterised in that: step (3) is described to be changed
Property aggregate processing process are as follows: medical stone is stirred with hydrochloric acid 1:10~1:20 in mass ratio, is filtered, is washed, it is dry, obtain
Medical stone is pre-processed, according to parts by weight, by 20~30 parts of pretreatment medical stones, 10~20 parts of lards, 0.2~0.3 part of fat
Enzyme, 20~30 parts of ethylene glycol, 10~20 parts of ethyl orthosilicates, heating stirring reaction are filtered, are washed, dry, obtain modified aggregate.
5. a kind of preparation method of anti-folding bamboo pulp cement plate according to claim 1, it is characterised in that: step (3) described silicon
Alkane coupling agent is silane resin acceptor kh-550, any one in silane coupling agent KH-560 or Silane coupling reagent KH-570.
6. a kind of preparation method of anti-folding bamboo pulp cement plate according to claim 1, it is characterised in that: step (3) 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 anti-folding bamboo pulp cement plate according to claim 1, it is characterised in that: step (3) is described to be changed
The preparation process of property additive are as follows: graphene oxide is mixed, ultrasonic disperse with water 1:20~1:30 in mass ratio, be then added dropwise
Ammonium hydroxide adjusts pH to 9.8~10.1, obtains Pretreatment Mixed Liauid, tossa is crushed, and crosses the sieve of 80 mesh, obtains tossa powder,
According to parts by weight, 20~30 parts of tossa powder, 8~10 parts of cellulases, 40~60 parts of water stirring constant temperature processing, enzyme deactivation,
Tossa mixed liquor is obtained, Pretreatment Mixed Liauid is mixed into oscillation, mistake with tossa mixed liquor 1:5~1:10 in mass ratio
Filter, washing are dry to get modified additive.
8. a kind of preparation method of anti-folding bamboo pulp cement plate according to claim 1, it is characterised in that: step (3) described wood
Considering to be worth doing is poplar bits, pine sawdust, birch bits, any one in mahogany bits.
9. a kind of preparation method of anti-folding bamboo pulp cement plate according to claim 1, it is characterised in that: step (3) is described not
Saturated polyester resin is m-phthalate unsaturated polyester resin, metaphenylene unsaturated polyester resin or bisphenol A-type unsaturated polyester (UP) tree
Any one in rouge.
10. a kind of preparation method of anti-folding bamboo pulp cement plate according to claim 1, it is characterised in that: step (3) is described dry
Property oil be tung oil, Chinese catalpa oil or linseed oil in any one.
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