CN107266013A - Binding agent with and preparation method thereof - Google Patents
Binding agent with and preparation method thereof Download PDFInfo
- Publication number
- CN107266013A CN107266013A CN201710655125.1A CN201710655125A CN107266013A CN 107266013 A CN107266013 A CN 107266013A CN 201710655125 A CN201710655125 A CN 201710655125A CN 107266013 A CN107266013 A CN 107266013A
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- China
- Prior art keywords
- binding agent
- magnesia
- magnesium chloride
- agent
- modifying agent
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Classifications
-
- 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
- C04B28/30—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 magnesium cements or similar cements
- C04B28/32—Magnesium oxychloride cements, e.g. Sorel cement
-
- 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
- C04B2111/00017—Aspects relating to the protection of the environment
-
- 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
- C04B2111/00025—Aspects relating to the protection of the health, e.g. materials containing special additives to afford skin protection
-
- 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
- C04B2111/00241—Physical properties of the materials not provided for elsewhere in C04B2111/00
- C04B2111/00293—Materials impermeable to liquids
-
- 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
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00637—Uses not provided for elsewhere in C04B2111/00 as glue or binder for uniting building or structural materials
-
- 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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The present invention relates to building material field, and more particularly to a kind of binding agent with and preparation method thereof.Binding agent is mainly made up of magnesium chloride solution, magnesia, modifying agent and wood chip.Wherein the mass ratio of magnesium chloride solution, magnesia, modifying agent and wood chip is 1：0.8‑1.2：1‑2.5：1.5 4.5, modifying agent is mainly made up of acid solution, polyethylene glycol, formaldehyde and catechol.Adhesive strength is high, cementitiousness is good, and anti-permeability performance and cracking resistance are good, and in the absence of the phenomenon for returning halogen.
Description
Technical field
The present invention relates to building material field, and more particularly to a kind of binding agent with and preparation method thereof.
Background technology
In industrial building it is general using steel plate or steel bar by two relatively independent structure weldings together, using welding
Connection adds production cost, while adding security risk.And be bonded using binding agent and be easily bonded insecure, bonding
Situations such as place easily crackle, scum occurs, easily causes production accident.And existing binding agent is closely knit impervious with rolling cracking resistance
Property is poor.
The content of the invention
It is an object of the invention to provide a kind of binding agent, its environmental protection, health, intensity are high, and can thoroughly solve existing viscous
The closely knit impervious technical problem with rolling crack resistance difference of knot agent.
Another object of the present invention is to provide a kind of method for preparing binding agent, this method step is brief, simple to operate,
And can fast and efficiently prepare binding agent.
The present invention is solved its technical problem and realized using following technical scheme：
The present invention proposes a kind of binding agent, and it is mainly made up of magnesium chloride solution, magnesia, modifying agent and wood chip.Wherein
Magnesium chloride solution, magnesia, the mass ratio of modifying agent and wood chip are 1：0.8-1.2：1-2.5：1.5-4.5, modifying agent mainly by
Acid solution, polyethylene glycol, formaldehyde and catechol are made.
The present invention proposes a kind of method for preparing binding agent, comprises the following steps：By magnesium chloride solution, magnesia, modification
Agent and wood chip are 1 according to mass ratio：0.7-1.1：3-5：15-21 ratio be mixed and stirred for uniformly, and 0.5-6 after mixing
The binding agent is used in hour.
The binding agent of the embodiment of the present invention with and preparation method thereof beneficial effect be：Adhesive strength is high, cementitiousness
It is good, and anti-permeability performance and cracking resistance are good, and in the absence of the phenomenon for returning halogen.And prepare the method operation letter of the binding agent
Single, step is brief, and raw material is easy to get, and reaction condition is easily achieved.
Embodiment
, below will be in the embodiment of the present invention to make the purpose, technical scheme and advantage of the embodiment of the present invention clearer
Technical scheme be clearly and completely described.Unreceipted actual conditions person, builds according to normal condition or manufacturer in embodiment
The condition of view is carried out.Agents useful for same or the unreceipted production firm person of instrument, are the conventional production that can be obtained by commercially available purchase
Product.
In the description of the invention, it is necessary to which explanation, term " first ", " second " etc. are only used for distinguishing description, without
It is understood that to indicate or imply relative importance.
Below to the binding agent of the embodiment of the present invention with and preparation method thereof be specifically described.
A kind of binding agent provided in an embodiment of the present invention, it is mainly by magnesium chloride solution, magnesia, modifying agent and wood chip system
Into.
Magnesium chloride solution and magnesia react generation crystalline phase, at the same magnesium chloride can promote magnesia dissolve and
Aquation, and the content being dispersed in magnesium hydroxide colloidal is lifted, improve the intensity of binding agent.And wood chip then can be further
Crystallize the intensity that phase separation lifts binding agent, water resistance and wearability, each performance of multiple strengthening binding agent.It is simultaneously modified
Agent make it that binding agent will not be cracked and anti-permeability performance is good with wood chip, equal interact of crystallization.
Further, the mass ratio of magnesium chloride solution, magnesia, modifying agent and wood chip is 1：0.8-1.2：1-2.5：1.5-
4.5.The effect of interaction between magnesium chloride solution, magnesia, modifying agent and wood chip ensure that most using aforementioned proportion
Good, that is, the performance of the binding agent obtained is optimal, and its impervious and crack resistance is very excellent.If the ratio that above-mentioned substance is used is not
It can cause that the binding agent adhesive property prepared is poor, cracking resistance is poor, anti-permeability performance is poor within that range and easily occur
Return the situation of halogen.
Magnesium chloride is generally divided into anhydrous magnesium chloride and magnesium chloride hexahydrate, anhydrous magnesium chloride and the magnesium chloride for not containing the crystallization water
Molecular formula is-MgCl2；And magnesium chloride hexahydrate it to contain six crystallizations water its related molecular formula be-MgCl2·6H2O.
Magnesium chloride used is magnesium chloride hexahydrate in the embodiment of the present invention, can be provided for the generation of crystalline phase and combine water.
Magnesia is the oxide of magnesium, and a kind of ionic compound belongs to binder materials.Magnesite (MgCO3), dolomite
(MgCO3·CaCO3) and seawater be produce magnesia primary raw material.Thermal decomposition magnesite or dolomite obtain magnesia.Magnesia
It is that most basic reactant is provided for binding agent in embodiments of the present invention, magnesia can reflect into colloid magnesium hydroxide, after
And be to provide excellent intensity and anti-wear performance after binding agent hardening.
Further, magnesia includes 5-10 parts of activated magnesias and 7-12 parts of light calcined magnesias.Activated magnesia is carbon
Sour magnesium obtains that purity is higher, particle diameter is smaller after high-temperature calcination, the higher magnesia of activity.It is bitter that light calcined magnesia is also known as causticity
Soil, active magnesia is a kind of magnesium hydroxide Mg (OH) extracted by magnisite stone, shepardite and in seawater or bittern2,
The light calcined magnesia obtained through 700~1000 DEG C of temperature lower calcinations.The magnesia that the embodiment of the present invention is used is active oxidation
The mixture of magnesium and light calcined magnesia, it is ensured that magnesia it is active moderate, during only with activated magnesia, the work of activated magnesia
Property passageway, viscosity in binding agent can be caused too high, easily occur crackle after causing binding agent dry and hard, while so that binding agent solidify
Time become extremely short, the rotten possibility of increase binding agent.And if using only light calcined magnesia, the binding agent prepared
Adhesive property reduction, and easily crack.And ensure that using the activated magnesia and light calcined magnesia of aforementioned proportion
The activity for the magnesia being mixed to get is optimal, and the binding agent prepared not only has good adhesive property, also high intensity,
And impervious and crack resistance.
Further, it is 0.3-0.7 that magnesium chloride solution, which is mainly magnesium chloride and water according to mass ratio,:After 1 ratio mixing
The solution prepared.It is that magnesium chloride is dissolved in water that magnesium chloride is mixed with water, is easy to follow-up magnesium chloride and oxidation reactive magnesium, together
Shi Shui does dissolution solvent at this moment, and to follow-up magnesium chloride with aoxidizing during reactive magnesium, water is molten not only as dissolving magnesia
Agent still participates in the reactant of reaction.Magnesium chloride and water not only ensure magnesium chloride all dissolvings using aforementioned proportion, can be with
Ensure the water and follow-up oxidation reactive magnesium for having abundance, and magnesium hydroxide colloidal can be dissolved, and then ensure the correlation of binding agent
Performance.
Further, wood chip is according to one kind in face side and plant straw powder or its combination.Addition wood chip enables to glue
The water suction sex chromosome mosaicism of knot agent is resolved, while viscosity is glued in the condensation that can increase binding agent.And sawdust is called according to face side, refer to
Carry out timber processing when because cutting and from trees the foam shape wood chip of fallen trees in itself, its volume and surface
Product is smaller, and it is easily well mixed with magnesium chloride, magnesia etc. in embodiments of the present invention, and the energy after binding agent is dry and hard
Enough strengthen the intensity of binding agent, the problem of solving the water imbibition of binding agent.Straw is ripe crops cauline leaf (fringe) part
General name, crude fiber content is high, can strengthen the intensity of binding agent after binding agent is dry and hard in embodiments of the present invention.
Further, modifying agent is mainly made up of acid solution, polyethylene glycol, formaldehyde and catechol.Acid solution can be adjusted
Save the pH value of bonding agent and suppress binding agent expansion, meanwhile, suppress binding agent and return halogen.Formaldehyde and catechol etc. can be lifted viscous
Agent water resistant ability is tied, polyethylene glycol can increase binding agent anti-crack ability, and can effectively change after above-mentioned several material mixings
Enter the correlated performance of binding agent, the weak point to binding agent makes up.
Further, modifying agent also includes any one in triethanolamine and methylcellulose or its combination.Methyl
Cellulose can increase the binding function of binding agent, while the intensity of binding agent can be lifted, further improve the work(of binding agent
Energy.Triethanolamine promotes the adhesive force of bonding agent, the adhesive property of binding agent is lifted, while being capable of waterproof.
Further, acid solution is watery hydrochloric acid that mass percent is 0.5-1.5% or mass percent is 1.2-
1.8% dilute sulfuric acid.Acid solution can either ensure that it can effectively suppress binding agent using the diluted acid of the mass percent scope
Expand and return halogen, again will not be because acid solutions are too high and cause adhesive failure or effect to reduce.
The present invention also provides a kind of method for preparing binding agent：
S1, magnesium chloride solution, magnesia and modifying agent are prepared respectively；
It by magnesium chloride and water according to mass ratio is 0.3-0.7 that magnesium chloride solution, which is,:1 ratio is mixed and stirred for, and is made
Magnesium chloride is obtained to be dissolved completely in water., can according to dissolution kinetics balance but the magnesium chloride typically used is added to the water
Know, magnesium chloride is added to the water, magnesium chloride dissolution velocity is most fast, and dissolving is thorough.
Modifying agent be by copy diphenol and acid solution mixed at 60-80 DEG C after 15-30 minutes again successively with polyethylene glycol
With formaldehyde mixing.Acid solution and copy diphenol mix the pH value that ensure that mixed solution first first, and property identical material is mixed
Conjunction prevents from reacting between raw material in modifying agent.Polyethylene glycol is then added again promotes catechol in the solution scattered,
Ensure that each material disperses evenly in the solution, while catechol and polyethylene glycol formation intercalation configuration, are finally added again
Further, formaldehyde further carries out intercalation to formaldehyde, it is ensured that the consolidation of structure of modifier, is easy to be modified binding agent.
Further, the mass ratio of the acid solution, polyethylene glycol, formaldehyde and the catechol that use is 2-3:1-3:1:2-3,
The structure of modifier prepared using aforementioned proportion is stable, can for a long time preserve and effectively can be acted on binding agent.
It is further preferred that when preparing modifying agent, can be added again after addition formaldehyde in triethanolamine and methylcellulose
Any one or its combination.The no order of addition of addition of triethanolamine, methylcellulose or its combination, and add
Amount is per 1g acid solutions correspondence addition 1.5-2g triethanolamines or methylcellulose or combination thing.
Further, magnesia is prepared after mixing 5-10 parts of activated magnesias and 7-12 parts of light calcined magnesias.
When the two is mixed, preferably activated magnesia is added in light calcined magnesia, it is ensured that activated magnesia can be quickly light-burned
Magnesia is surrounded, and prevents activated magnesia to be denatured, it is ensured that to be mixed with the activity of obtained magnesia.
It should be noted that the preparation of modifying agent, the preparation of magnesia and the preparation of magnesium chloride solution are without specific suitable
Sequence, arbitrarily can first prepare a material, or prepares and also may be used simultaneously.
S2, prepare binding agent；
By magnesium chloride solution, magnesia, modifying agent and wood chip according to mass ratio be 1：0.7-1.1：3-5：15-21 ratio
Progress is mixed and stirred for uniformly, and uses the binding agent after mixing in 0.5-6 hours.Magnesium chloride solution, magnesia, modifying agent
The bonding agent that can be quickly generated is ensure that using aforementioned proportion with wood chip, and Binder Properties are excellent.By inventor
Research is found, binding agent must be used into object for appreciation, otherwise the structure meeting of binding agent within 0.5-6 hour after the completion of binding agent preparation
Change, then cause binding agent to lose binding function, and cracking resistance and the equal extreme difference of anti-permeability performance.And within 0.5-6 hour,
The various aspects of performance of binding agent is optimal, existing to have excellent adhesive effect, there is the performances such as splendid impervious, cracking resistance again.
Specifically, mixed again with successively with magnesia and wood chip after magnesium chloride solution is mixed with modifying agent.First, by chlorine
Change magnesium and mix with modifying agent be in order to ensure follow-up magnesium chloride and aoxidize the obtained crystalline phase of reactive magnesium can effectively with modification
Agent is reacted, and prevents magnesium chloride from can not be reacted with the crystalline phase obtained after oxidation reactive magnesium with modifying agent.Meanwhile, finally add wood chip
Ensure intensity, water proofing property, the impermeability of binding agent.
Further, in order to ensure the performance of the binding agent prepared be constantly in before being not used one it is good
State to the binding agent prepared, it is necessary to conserve, and specifically, maintenance method is thermostatic curing, and the temperature of thermostatic curing is
25-30 DEG C, the thermostatic curing time is 2-3 hours.The temperature of thermostatic curing is too high to cause binding agent dry and hard, then cause to bond
Viscosity is lost in agent, if curing temperature is too low, the moisture in the easy absorption air of binding agent, and then causes adhesive failure.At this
The moisture that binding agent will not be in absorption air in temperature range, and will not occur dry and hard.
A kind of adhesive strength that the present invention is provided is high, cementitiousness is good, and anti-permeability performance and cracking resistance are good,
And in the absence of the phenomenon for returning halogen.And the method for preparing the binding agent is simple to operate, step is brief, and raw material is easy to get, and reaction condition is easy
In realization.
The feature and performance to the present invention are described in further detail with reference to embodiments.
Embodiment 1
The present embodiment provides a kind of binding agent, and it is mainly by 1g magnesium chloride solutions, 0.8g magnesia, 2g modifying agent and 1.5g
Wood chip is made.Wherein, magnesium chloride solution includes 0.23g magnesium chlorides and 0.77g water；Wood chip is according to face side；Magnesia includes
0.24g activated magnesias and 0.56g light calcined magnesias；Modifying agent is main by 0.7g acid solutions, 0.3g polyethylene glycol, 0.3g formaldehyde
It is made with 0.7g catechols；Its acid solution is the watery hydrochloric acid that mass percent is 0.5%.
The present embodiment also provides a kind of method for preparing binding agent：
S1, magnesium chloride solution, magnesia and modifying agent are prepared respectively；
0.23g magnesium chlorides are added to stir to magnesium chloride in 0.77g water and are completely dissolved, magnesium chloride solution is then obtained.
Magnesia is prepared after 0.24g activated magnesias and 0.56g light calcined magnesias are mixed.
After 0.7g acid solutions and 0.7g catechols are mixed 25 minutes at 60 DEG C again successively with 0.3g polyethylene glycol,
0.3g formaldehyde is mixed to get modifying agent.
S2, prepare binding agent：
It is well mixed successively with 0.8g magnesia, 1.5g wood chips again after 1g magnesium chloride solutions and 2g modifying agent are mixed.It is mixed
Uniform rear progress thermostatic curing is closed, the temperature of thermostatic curing is 25 DEG C, and the thermostatic curing time is 2 hours.And in 0.5-6 hours
Use the binding agent prepared.
Embodiment 2
The present embodiment provides a kind of binding agent, and it is mainly by 1g magnesium chloride solutions, 1g magnesia, 2.5g modifying agent and 3g wood
Bits are made.Wherein, magnesium chloride solution includes 0.33g magnesium chlorides and 0.67g water；Wood chip is plant straw powder；Magnesia includes
0.15g activated magnesias and 0.85g light calcined magnesias；Modifying agent is main by 0.51g acid solutions, 0.41g polyethylene glycol, 0.21g
Formaldehyde, 0.61g catechols and 0.76 triethanolamine are made；Its acid solution is the watery hydrochloric acid that mass percent is 1.5%.
The present embodiment also provides a kind of method for preparing binding agent：
S1, magnesium chloride solution, magnesia and modifying agent are prepared respectively；
0.33g magnesium chlorides are added to stir to magnesium chloride in 0.67g water and are completely dissolved, magnesium chloride solution is then obtained.
Magnesia is prepared after 0.15g activated magnesias and 0.85g light calcined magnesias are mixed.
After 0.51g acid solutions and 0.61g catechols are mixed 15 minutes at 80 DEG C again successively with the poly- second of 0.41g two
Alcohol, 0.21g formaldehyde and 0.76 3 ethanol are mixed to get modifying agent.
S2, prepare binding agent：
It is well mixed successively with 1g magnesia, 3g wood chips again after 1g magnesium chloride solutions and 2.5g modifying agent are mixed.Mixing
Thermostatic curing is carried out after uniform, the temperature of thermostatic curing is 30 DEG C, and the thermostatic curing time is 2.5 hours.And in 0.5-6 hours
Use the binding agent prepared.
Embodiment 3
The present embodiment provides a kind of binding agent, its mainly by 1g magnesium chloride solutions, 1.2g magnesia, 1.5g modifying agent and
4.5g wood chips are made.Wherein, magnesium chloride solution includes 0.41g magnesium chlorides and 0.59g water；Wood chip is for plant straw powder and according to wood
The material that face is mixed to get；Magnesia includes 0.6g activated magnesias and 0.6g light calcined magnesias；Modifying agent is main by 0.3g acid
Solution, 0.25g polyethylene glycol, 0.1g formaldehyde, 0.25g catechols and 0.6 methylcellulose are made；Its acid solution is quality hundred
Divide than the dilute sulfuric acid for 1.2%.
The present embodiment also provides a kind of method for preparing binding agent：
S1, magnesium chloride solution, magnesia and modifying agent are prepared respectively；
0.41g magnesium chlorides are added to stir to magnesium chloride in 0.59g water and are completely dissolved, magnesium chloride solution is then obtained.
Magnesia is prepared after 0.6g activated magnesias and 0.6g light calcined magnesias are mixed.
After 0.3g acid solutions and 0.25g catechols are mixed 30 minutes at 70 DEG C again successively with 0.25g polyethylene glycol,
0.1g formaldehyde and 0.6 methylcellulose are mixed to get modifying agent.
S2, prepare binding agent：
It is well mixed successively with 1.2g magnesia, 4.5g wood chips again after 1g magnesium chloride solutions and 1.5g modifying agent are mixed.
Thermostatic curing is carried out after well mixed, the temperature of thermostatic curing is 27 DEG C, and the thermostatic curing time is 3 hours.And at 0.5-6 hours
It is interior to use the binding agent prepared.
Embodiment 4
The present embodiment provides a kind of binding agent, and it is mainly by 1g magnesium chloride solutions, 1.2g magnesia, 1g modifying agent and 2.5g
Wood chip is made.Wherein, magnesium chloride solution includes 0.29g magnesium chlorides and 0.71g water；Wood chip is plant straw powder and mixed according to face side
Close obtained material；Magnesia includes 0.525g activated magnesias and 0.675g light calcined magnesias；Modifying agent is main by 0.18g acid
Solution, 0.26g polyethylene glycol, 0.09g formaldehyde, 0.18g catechols, 0.12 methylcellulose and 0.18g triethanolamines are made；
Its acid solution is the watery hydrochloric acid that mass percent is 1.2%.
The present embodiment also provides a kind of method for preparing binding agent：
S1, magnesium chloride solution, magnesia and modifying agent are prepared respectively；
0.29g magnesium chlorides are added to stir to magnesium chloride in 0.71g water and are completely dissolved, magnesium chloride solution is then obtained.
Magnesia is prepared after 0.525g activated magnesias and 0.675g light calcined magnesias are mixed.
After 0.18g acid solutions and 0.18g catechols are mixed 20 minutes at 75 DEG C again successively with the poly- second of 0.26g two
Alcohol, 0.09g formaldehyde and 0.12 methylcellulose and 0.18g triethanolamines are mixed to get modifying agent.
S2, prepare binding agent：
It is well mixed successively with 1.2g magnesia, 2.5g wood chips again after 1g magnesium chloride solutions and 1g modifying agent are mixed.It is mixed
Uniform rear progress thermostatic curing is closed, the temperature of thermostatic curing is 28 DEG C, and the thermostatic curing time is 2.2 hours.And at 0.5-6 hours
It is interior to use the binding agent prepared.
Embodiment 5
The present embodiment provides a kind of binding agent, and it is mainly by 1g magnesium chloride solutions, 1g magnesia, 2.4g modifying agent and 2.2g
Wood chip is made.Wherein, magnesium chloride solution includes 0.375g magnesium chlorides and 0.625g water；Wood chip is according to face side；Magnesia includes
0.33g activated magnesias and 0.67g light calcined magnesias；Modifying agent is main by 0.42g acid solutions, 0.32g polyethylene glycol, 0.21g
Formaldehyde, 0.63g catechols, 0.84g triethanolamines are made；Its acid solution is the dilute sulfuric acid that mass percent is 1.8%.
The present embodiment also provides a kind of method for preparing binding agent：
S1, magnesium chloride solution, magnesia and modifying agent are prepared respectively；
0.375g magnesium chlorides are added to stir to magnesium chloride in 0.625g water and are completely dissolved, magnesium chloride are then obtained molten
Liquid.
Magnesia is prepared after 0.33g activated magnesias and 0.67g light calcined magnesias are mixed.
After 0.42g acid solutions and 0.63g catechols are mixed 27 minutes at 65 DEG C again successively with the poly- second of 0.32g two
Alcohol, 0.21g formaldehyde and 0.84g triethanolamines are mixed to get modifying agent.
S2, prepare binding agent：
It is mainly made up of 1g magnesium chloride solutions, 1g magnesia, 2.4g modifying agent and 2.2g wood chips.
It is well mixed successively with 1g magnesia, 2.2g wood chips again after 1g magnesium chloride solutions and 2.4g modifying agent are mixed.It is mixed
Uniform rear progress thermostatic curing is closed, the temperature of thermostatic curing is 25 DEG C, and the thermostatic curing time is 2.5 hours.And at 0.5-6 hours
It is interior to use the binding agent prepared.
The impervious detection of experimental example 1
Impervious detection is carried out respectively to the binding agent that embodiment 1- embodiments 5 are prepared, specific testing result is shown in Table
1.Concrete operations be respectively the same amount of binding agent distributing and paintings of Example 1-5 in 5 same volumes, formed objects, identical
In the matrix of material, and dry naturally, the wax that the surrounding painting of matrix then is spread into thawing is sealed (two end faces of matrix
Forbid have wax) then matrix forcing press is pressed into die trial, and poured water in backward water tank, and cover to die trial bottom, and
Die trial dress is solid afterwards is detected on instrument, and hydraulic pressure is gradually pressurized since 0.2MPa during experiment, and is observed the end face of matrix and existed
Occur the situation that pressure permeation comes out under which hydraulic pressure, record the pressure.
The anti-permeability performance of table 1
| Pressure value (Mpa) | |
| Embodiment 1 | 3.4 |
| Embodiment 2 | 3.2 |
| Embodiment 3 | 3.5 |
| Embodiment 4 | 3.3 |
| Embodiment 5 | 3.6 |
As shown in Table 1, the binding agent of embodiment 1- embodiments 5 has good anti-permeability performance.
Experimental example 2
Annulus constraint Specimen Method is used to carry out cracking resistance test experience the binding agent of embodiment 1- embodiments 5, specifically
Testing result is shown in Table 2
The cracking resistance of table 2
It can be seen from table 2, embodiment 1-5 binding agent has good cracking resistance.
Experimental example 3
The binding agent prepared to embodiment 1-5 carries out anti-pressure ability test, testing result using GB177-92 methods
It is shown in Table 3.
The anti-pressure ability of table 3
| 3 days compression strength (MPa) | 28 days compression strength (MPa) | |
| Embodiment 1 | 90 | 129 |
| Embodiment 2 | 92 | 131 |
| Embodiment 3 | 94 | 138 |
| Embodiment 4 | 87 | 134 |
| Embodiment 5 | 91 | 136 |
It can be seen from table 3, there is good anti-pressure ability after embodiment 1-5 binding agent is dry and hard.
To sum up, the binding agent of 1-5 of embodiment of the present invention offers and the method for preparing bonding agent, adhesive strength are high, viscous
Knot ability is good, and anti-permeability performance and cracking resistance are good, and in the absence of the phenomenon for returning halogen.And the method for preparing the binding agent
Simple to operate, step is brief, and raw material is easy to get, and reaction condition is easily achieved.
Embodiments described above is a part of embodiment of the invention, rather than whole embodiments.The reality of the present invention
The detailed description for applying example is not intended to limit the scope of claimed invention, but is merely representative of the selected implementation of the present invention
Example.Based on the embodiment in the present invention, what those of ordinary skill in the art were obtained under the premise of creative work is not made
Every other embodiment, belongs to the scope of protection of the invention.
Claims (10)
1. a kind of binding agent, it is characterised in that it is mainly made up of magnesium chloride solution, magnesia, modifying agent and wood chip, wherein chlorine
The mass ratio for changing magnesium solution, magnesia, modifying agent and wood chip is 1：0.8-1.2：1-2.5：1.5-4.5, the modifying agent is main
It is made up of acid solution, polyethylene glycol, formaldehyde and catechol.
2. binding agent according to claim 1, it is characterised in that the magnesium chloride solution be mainly magnesium chloride and water according to
Mass ratio is 0.3-0.7:The solution prepared after 1 ratio mixing.
3. binding agent according to claim 1, it is characterised in that the wood chip is according to one in face side and plant straw powder
Plant or its combination.
4. binding agent according to claim 1, it is characterised in that the modifying agent also includes triethanolamine and Methyl cellulose
Any one in element or its combination.
5. binding agent according to claim 4, it is characterised in that the acid solution is that mass percent is 0.5-1.5%
Watery hydrochloric acid or mass percent be 1.2-1.8% dilute sulfuric acid.
6. a kind of method for preparing binding agent, it is characterised in that comprise the following steps：By magnesium chloride solution, magnesia, modifying agent
With wood chip according to mass ratio be 1：0.7-1.1：3-5：15-21 ratio be mixed and stirred for uniformly, and 0.5-6 is small after mixing
When it is interior use the binding agent.
7. the method according to claim 6 for preparing binding agent, it is characterised in that the magnesia includes 5-10 parts of activity
Magnesia and 7-12 parts of light calcined magnesias.
8. the method according to claim 7 for preparing binding agent, it is characterised in that the magnesium chloride solution, the oxidation
Magnesium, the modifying agent and the wood chip mixing be after the magnesium chloride solution is mixed with the modifying agent again with successively with it is described
Magnesia and wood chip mixing.
9. the method according to claim 6 for preparing binding agent, it is characterised in that the modifying agent be by copy diphenol with
Acid solution is mixed with polyethylene glycol and formaldehyde successively again after being mixed 15-30 minutes at 60-80 DEG C.
10. the method according to claim 6 for preparing binding agent, it is characterised in that maintenance processes first carry out thermostatic curing,
The temperature of thermostatic curing is 25-30 DEG C, and the thermostatic curing time is 2-3 hours.
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| CN201710655125.1A CN107266013A (en) | 2017-08-03 | 2017-08-03 | Binding agent with and preparation method thereof |
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| CN201710655125.1A CN107266013A (en) | 2017-08-03 | 2017-08-03 | Binding agent with and preparation method thereof |
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| CN201710655125.1A Pending CN107266013A (en) | 2017-08-03 | 2017-08-03 | Binding agent with and preparation method thereof |
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Cited By (3)
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| CN108394132A (en) * | 2018-03-08 | 2018-08-14 | 陈良地 | A kind of water-fast pressure-resistant high-intensity corrugated paper and its preparation process |
| CN111233489A (en) * | 2020-02-21 | 2020-06-05 | 鞍山腾泰耐火材料有限公司 | Magnesium-based binder for fired magnesia bricks and preparation method thereof |
| CN115231891A (en) * | 2022-08-02 | 2022-10-25 | 贵州晶木建材有限公司 | Production method of glue-free wood particle anti-aging outdoor plank road plate |
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| CN101112768A (en) * | 2006-07-25 | 2008-01-30 | 张路举 | Process for producing board through cold pressing and molding by using cropper straw |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108394132A (en) * | 2018-03-08 | 2018-08-14 | 陈良地 | A kind of water-fast pressure-resistant high-intensity corrugated paper and its preparation process |
| CN111233489A (en) * | 2020-02-21 | 2020-06-05 | 鞍山腾泰耐火材料有限公司 | Magnesium-based binder for fired magnesia bricks and preparation method thereof |
| CN111233489B (en) * | 2020-02-21 | 2022-06-14 | 鞍山腾泰耐火材料有限公司 | Magnesium-based binder for fired magnesia bricks and preparation method thereof |
| CN115231891A (en) * | 2022-08-02 | 2022-10-25 | 贵州晶木建材有限公司 | Production method of glue-free wood particle anti-aging outdoor plank road plate |
| CN115231891B (en) * | 2022-08-02 | 2023-08-04 | 贵州晶木建材有限公司 | Production method of glue-free wood particle anti-aging outdoor trestle plate |
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Application publication date: 20171020 |