CN110054859A - Modified alta-mud and preparation method thereof - Google Patents
Modified alta-mud and preparation method thereof Download PDFInfo
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- CN110054859A CN110054859A CN201910317635.7A CN201910317635A CN110054859A CN 110054859 A CN110054859 A CN 110054859A CN 201910317635 A CN201910317635 A CN 201910317635A CN 110054859 A CN110054859 A CN 110054859A
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- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F251/00—Macromolecular compounds obtained by polymerising monomers on to polysaccharides or derivatives thereof
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F289/00—Macromolecular compounds obtained by polymerising monomers on to macromolecular compounds not provided for in groups C08F251/00 - C08F287/00
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F292/00—Macromolecular compounds obtained by polymerising monomers on to inorganic materials
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- C08L51/00—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
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- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
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- C08L2205/00—Polymer mixtures characterised by other features
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Abstract
The invention discloses a kind of modified alta-muds and preparation method thereof, comprising the following steps: by natural montmorillonite drying and crushing, through washing desanding, purify to montmorillonite powder content be 98wt% or more, be then crushed to 1000-2000 mesh, obtain bentonite in powder；Above-mentioned bentonite in powder be tentatively modified, preliminary modified alta-mud powder is obtained；Pine powder is modified, modified pine powder is obtained；By in 45-55 parts of preliminary bentonite in powder, 25-35 parts of modified pine powders, 1-5 parts of asphalt emulsions investment extrusion devices, 125-175 DEG C at a temperature of squeeze out, obtain modified alta-mud.The modified alta-mud prepared using method of the invention, expansion character is good, and water retention is high, and percentage of water loss is lower.
Description
Technical field
The present invention relates to bentonite technical field, a kind of particularly modified alta-mud and preparation method thereof.
Background technique
Bentonitic mineralogical name is montmorillonite, and natural bentonite is according to chemical composition broadly divided into sodium base and calcium base two
Major class.Bentonite has the characteristic of water-swellable, and generally, when calcium-base bentonite expands, expansion can reach 3 times of own vol
Left and right, and when sodium bentonite meets water, after it adsorbs 5 times of own wt of water, volume may expand to original 15-17 times with
On.Therefore, bentonite waterproof blanket industrially is formed usually by sodium bentonite lock among two layers of geosynthetics.Synthesis
Material plays a part of to protect and reinforce, and bentonite waterproof blanket is made to have certain integral anti-shearing intensity.
In practice, it has been found that bentonite in fresh water have excellent expansion character and stickiness, but salt (sea) water with
In sewage, the hydrone of layer and interlayer in bentonite molecular structure is limited to contain a large amount of electrolyte in salt water or sewage
Sundries react, bentonitic molecular structure be destroyed or molecular structure between cannot form connection, the coefficient of expansion and viscosity drop
Low, hydration capability reduces, and is easy to lose waterproof, seepage control performance.
Summary of the invention
In order to overcome the defects of the prior art, the embodiment of the invention provides a kind of modified alta-mud and its preparation sides
At least one of method, be used to solve the above problems.
The embodiment of the present application discloses: a kind of method for preparing modified bentonite, comprising the following steps:
By natural montmorillonite drying and crushing, through washing desanding, purify to montmorillonite powder content be 98wt% or more, then
It is crushed to 1000-2000 mesh, obtains bentonite in powder；
Above-mentioned bentonite in powder be tentatively modified, preliminary modified alta-mud powder is obtained；
Pine powder is modified, modified pine powder is obtained；
By the preliminary bentonite in powder of 45-55 mass parts, the modified pine powder of 25-35 mass parts, 1-5 mass parts asphalt emulsion investment
In extrusion device, 125-175 DEG C at a temperature of squeeze out, obtain modified alta-mud.
Specifically, in step " be tentatively modified to above-mentioned bentonite in powder, obtain preliminary modified alta-mud powder ", including
Following steps:
Potassium hydroxide and acrylic acid are neutralized, the first mixed liquor is obtained；
The bentonite that montmorillonite powder content is 98wt% or more is added in amidin, the second mixed liquor is obtained,
In, the mass ratio by the first mixed liquor and the second mixed liquor is in terms of 1:1 is, the quality of starch is the first mixing in the second mixed liquor
The 5-10% of acrylic acid quality in liquid, the bentonitic quality that montmorillonite powder content is 98wt% or more in the second mixed liquor is
The 10-20% of acrylic acid quality in one mixed liquor；
First mixed liquor and the second mixed liquor are mixed by the mass ratio of 1:1, obtain third mixed liquor, to
Be passed through protective gas in the third mixed liquor, and 40-50 DEG C at a temperature of 1.5- is heated to the third mixed liquor
4.5min；
The third mixed liquor that heating is completed, which is placed in irradiation 30-60min in uv photopolymerization reaction unit, makes above-mentioned group
Divide sufficiently reaction, irradiation temperature is 50-70 DEG C；
Third mixed liquor after abundant reaction is dried, preliminary modified alta-mud is obtained.
Specifically, in step " the third mixed liquor after abundant reaction being dried, obtain preliminary modified alta-mud ",
Third mixed liquor after abundant reaction is placed in constant-temperature vacuum drying device and is dried.
Specifically, in step " the third mixed liquor after abundant reaction being dried, obtain preliminary modified alta-mud ",
The third mixed liquor after abundant reaction is dried using 110-130 DEG C of temperature.
Specifically, the protective gas is nitrogen.
Specifically, in step " being modified to pine powder, obtain modified pine powder ", comprising: pine is added in water
Powder is completely dispersed pine powder；Again successively into the water be added initiator, through in potassium hydroxide and cross acrylic acid solution,
And crosslinking agent, obtain the 4th mixed liquor；First the 4th mixed liquor, which is warming up between 45-55 DEG C, carries out said components just
Step reaction 1-3h, then the 4th mixed liquor after initial reaction, which is put into 110-130 DEG C of baking oven, reacts said components sufficiently
And dry, to obtain modified pine powder；Wherein, the quality of the pine powder of addition is the 25-35% of the quality of acrylic acid, is added
Initiator and crosslinking agent quality be respectively acrylic acid quality 0.5-1%.
Specifically, the initiator is ammonium persulfate.
Specifically, the crosslinking agent is PEGMa polyethylene glycol maleate.
The present embodiment additionally provides a kind of modified alta-mud, uses method described in the present embodiment to prepare, water absorption rate
Between 85-92%, water retention between 85-90%, and, percentage of water loss is between 70-75%.
Beneficial effects of the present invention are as follows:
1. there is good salt tolerance by the tentatively modified obtained preliminary modified alta-mud powder of acrylic acid.
2. not only there is good salt tolerance, water absorbing capacity by the pine powder after acrylic acid modified, bentonite can be improved
Salt tolerance and water imbibition, effectively improve bentonitic service life and effectiveness.
3. the preliminary modified alta-mud powder and modified pine powder after acrylic acid modified all have acrylic molecules chain, root
According to similar compatibility principle, after preliminary modified alta-mud powder and modified pine powder mixing, modified pine powder can be better dispersed in
In preliminary modified alta-mud powder, the quality of modified alta-mud is significantly improved.
4. raw material cost is low employed in this method, preparation process is simple, at low cost, there is popularity.
For above and other objects, features and advantages of the invention can be clearer and more comprehensible, preferred embodiment is cited below particularly,
And cooperate institute's accompanying drawings, it is described in detail below.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the flow chart of method for preparing modified bentonite described in the embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
As shown in Figure 1, method for preparing modified bentonite described in the present embodiment, comprising the following steps:
By natural montmorillonite drying and crushing, through washing desanding, purify to montmorillonite powder content be 98wt% or more, then
It is crushed to 1000-2000 mesh, obtains bentonite in powder.Specifically, to make haveing excellent performance for final modified alta-mud, this implementation
Natural montmorillonite used by example is natural sodium bentonite.Natural sodium bentonite is after drying and crushing, using multi-level water
Sand is removed, being screened and purifying to montmorillonite powder content is 98wt% or more, then is crushed to bentonite in powder.
Then, the bentonite in powder that above-mentioned montmorillonite powder content is 98wt% or more be tentatively modified, tentatively be changed
Property bentonite in powder.The tentatively modified method specifically includes: by potassium hydroxide and acrylic acid complete neutralization, obtaining the first mixing
Liquid；The bentonite that montmorillonite powder content is 98wt% or more is added in amidin, the second mixed liquor is obtained, wherein with
The mass ratio of first mixed liquor and the second mixed liquor is that 1:1 is meter, and the quality of starch is in the first mixed liquor in the second mixed liquor
The 5-10% of acrylic acid quality, the bentonitic quality that montmorillonite powder content is 98wt% or more in the second mixed liquor are first mixed
Close the 10-20% of acrylic acid quality in liquid；First mixed liquor and the second mixed liquor are carried out mixing by the mass ratio of 1:1 to stir
Mix, obtain third mixed liquor, be passed through protective gas in Xiang Suoshu third mixed liquor, and 40-50 DEG C at a temperature of to described
Third mixed liquor heats 1.5-4.5min, wherein the protective gas includes nitrogen；The third mixed liquor that heating is completed is put
Being placed in irradiation 30-60min in uv photopolymerization reaction unit reacts said components sufficiently, and irradiation temperature is 50-70 DEG C；It will fill
Third mixed liquor after dividing reaction is dried, and obtains preliminary modified alta-mud.
Then, pine powder is modified, obtains modified pine powder.Specifically, the method for modifying of the pine powder includes:
Pine powder is added in suitable water, is completely dispersed pine powder；Initiator is successively added into suitable water again, through hydrogen
The acrylic acid solution and crosslinking agent that potassium oxide complete neutralization is crossed, obtain the 4th mixed liquor；First the 4th mixed liquor is heated up
So that said components is carried out initial reaction 1-3h between to 45-55 DEG C, then the 4th mixed liquor after initial reaction is put into 110-130
DEG C baking oven in so that said components is sufficiently reacted and is dried, to obtain modified pine powder；Wherein, the quality of the pine powder of addition
For the 25-35% of the quality of acrylic acid, the initiator of addition and the quality of crosslinking agent are respectively the 0.5- of the quality of acrylic acid
1%.It should be noted that suitable water refers to, pine powder substantially uniformity can be made to disperse, and make pine powder, cause
Enough waters that agent, acrylic acid and crosslinking agent sufficiently react, in subsequent drying course, which can evaporate.
Then, by the preliminary bentonite in powder of 45-55 mass parts, the modified pine powder of 25-35 mass parts, 1-5 mass parts pitch cream
Liquid put into extrusion device in, 125-175 DEG C at a temperature of squeeze out, obtain modified alta-mud.
Preparation method described in the present embodiment has the advantage that
1. there is good salt tolerance by the tentatively modified obtained preliminary modified alta-mud powder of acrylic acid.
2. not only there is good salt tolerance, water absorbing capacity by the pine powder after acrylic acid modified, bentonite can be improved
Salt tolerance and water imbibition, effectively improve bentonitic service life and effectiveness.
3. the preliminary modified alta-mud powder and modified pine powder after acrylic acid modified all have acrylic molecules chain, root
According to similar compatibility principle, after preliminary modified alta-mud powder and modified pine powder mixing, modified pine powder can be better dispersed in
In preliminary modified alta-mud powder, the quality of modified alta-mud is significantly improved.
4. raw material cost is low employed in this method, preparation process is simple, at low cost, there is popularity.
Specifically, in step " the third mixed liquor after abundant reaction being dried, obtain preliminary modified alta-mud ",
Third mixed liquor after abundant reaction is placed in constant-temperature vacuum drying device and is dried, and using 110-130 DEG C of temperature
It spends and the third mixed liquor after abundant reaction is dried.
Specifically, used initiator is ammonium persulfate when being modified to pine powder, used crosslinking agent is
PEGMa polyethylene glycol maleate.
It is described in detail below using five specific implementation case methods described in the embodiment of the present invention:
Case 1
Firstly, selecting natural sodium bentonite, after drying and crushing, through multi-stage water wash desanding, screening purifies to montmorillonite and contains
Amount is 98wt% or more, then is crushed to 1200 mesh, obtains bentonite in powder.
Then, a certain amount of pine powder is taken, suitable quantity of water is added and stirs to being completely dispersed uniformly, sequentially adds persulfuric acid
The acrylic acid solution and PEGMa polyethylene glycol maleate that ammonium, potassium hydroxide neutralize, obtain the 4th mixed liquor；First by the 4th mixing
Liquid is warming up to 45 DEG C, makes to carry out initial reaction between the said components of the 4th mixed liquor, then the 4th after initial reaction is mixed
Liquid is put into 110 DEG C of baking oven, so that the 4th mixed liquor is continued polymerization, sufficiently reaction, is then dried；Again by the pine powder after drying
It crushes, obtains modified pine powder.Wherein, the quality of the pine powder of addition is the 30wt% of the quality of acrylic acid, the over cure of addition
The quality of sour ammonium is the 0.6% of the quality of acrylic acid, and the quality of the PEGMa polyethylene glycol maleate of addition is the quality of acrylic acid
0.8%.
Then, above-mentioned 50 mass parts of bentonite in powder, modified 30 mass parts of pine powder, 3 mass parts of asphalt emulsion are taken, investment is double
Screw extruder simultaneously crushes, and extrusion temperature is 130 DEG C, obtains modified alta-mud.
Case 2
Firstly, selecting natural sodium bentonite, after drying and crushing, through multi-stage water wash desanding, screening purifies to montmorillonite and contains
Amount is 98wt% or more, then is crushed to 1400 mesh, obtains bentonite in powder.
Then, using in potassium hydroxide and acrylic acid, the first mixed liquor is obtained；Amidin is added in above-mentioned bentonite
In, obtain the second mixed liquor, wherein the mass ratio by the first mixed liquor and the second mixed liquor is in terms of 1:1 is, in the second mixed liquor
The quality of starch is 6% of acrylic acid quality in the first mixed liquor, and montmorillonite powder content is 98wt% or more in the second mixed liquor
Bentonitic quality be the first mixed liquor in acrylic acid quality 11%；By the first mixed liquor and the second mixed liquor by 1:1's
Mass ratio is mixed, and is obtained third mixed liquor, nitrogen is passed through in Xiang Suoshu third mixed liquor, and in 45 DEG C of temperature
Under 2min is heated to the third mixed liquor, then place it in uv photopolymerization reaction unit, irradiate 50min at 60 DEG C,
React said components sufficiently；Third mixed liquor after the reaction was completed is placed in drying in 120 DEG C of vacuum drying oven again,
Then it crushes, obtains preliminary modified alta-mud powder.
(3) above-mentioned preliminary 50 mass parts of modified alta-mud powder, 3 mass parts of asphalt emulsion are taken, investment double screw extruder is simultaneously
It crushes, extrusion temperature is 127 DEG C, obtains modified alta-mud.
Case 3
Firstly, selecting natural sodium bentonite, after drying and crushing, through multi-stage water wash desanding, screening purifies to montmorillonite and contains
Amount is 98wt% or more, then is crushed to 1200 mesh, obtains bentonite in powder.
Then, a certain amount of pine powder is taken, suitable quantity of water is added and stirs to being completely dispersed uniformly, sequentially adds persulfuric acid
The acrylic acid solution and PEGMa polyethylene glycol maleate that ammonium, potassium hydroxide neutralize, obtain the 4th mixed liquor；First by the 4th mixing
Liquid is warming up to 45 DEG C, makes to carry out initial reaction between the said components of the 4th mixed liquor, then the 4th after initial reaction is mixed
Liquid is put into 110 DEG C of baking oven, so that the 4th mixed liquor is continued polymerization, sufficiently reaction, is then dried；Again by the pine powder after drying
It crushes, obtains modified pine powder.Wherein, the quality of the pine powder of addition is the 25wt% of the quality of acrylic acid, the over cure of addition
The quality of sour ammonium is the 0.6% of the quality of acrylic acid, and the quality of the PEGMa polyethylene glycol maleate of addition is the quality of acrylic acid
0.8%.
Then, using in potassium hydroxide and acrylic acid, the first mixed liquor is obtained；Amidin is added in above-mentioned bentonite
In, obtain the second mixed liquor, wherein the mass ratio by the first mixed liquor and the second mixed liquor is in terms of 1:1 is, in the second mixed liquor
The quality of starch is 6% of acrylic acid quality in the first mixed liquor, and montmorillonite powder content is 98wt% or more in the second mixed liquor
Bentonitic quality be the first mixed liquor in acrylic acid quality 12%；By the first mixed liquor and the second mixed liquor by 1:1's
Mass ratio is mixed, and is obtained third mixed liquor, nitrogen is passed through in Xiang Suoshu third mixed liquor, and in 45 DEG C of temperature
Under 2min is heated to the third mixed liquor, then place it in uv photopolymerization reaction unit, irradiate 50min at 60 DEG C,
React said components sufficiently；Third mixed liquor after the reaction was completed is placed in drying in 120 DEG C of vacuum drying oven again,
Then it crushes, obtains preliminary modified alta-mud powder.
Then, above-mentioned preliminary 50 mass parts of modified alta-mud powder, modified 25 mass parts of pine powder, 3 mass of asphalt emulsion are taken
Part, it puts into double screw extruder and crushes, extrusion temperature is 150 DEG C, obtains modified alta-mud.
Case 4
Firstly, selecting natural sodium bentonite, after drying and crushing, through multi-stage water wash desanding, screening purifies to montmorillonite and contains
Amount is 98wt% or more, then is crushed to 1400 mesh, obtains bentonite in powder.
Then, a certain amount of pine powder is taken, suitable quantity of water is added and stirs to being completely dispersed uniformly, sequentially adds persulfuric acid
The acrylic acid solution and PEGMa polyethylene glycol maleate that ammonium, potassium hydroxide neutralize, obtain the 4th mixed liquor；First by the 4th mixing
Liquid is warming up to 45 DEG C, makes to carry out initial reaction between the said components of the 4th mixed liquor, then the 4th after initial reaction is mixed
Liquid is put into 110 DEG C of baking oven, so that the 4th mixed liquor is continued polymerization, sufficiently reaction, is then dried；Again by the pine powder after drying
It crushes, obtains modified pine powder.Wherein, the quality of the pine powder of addition is the 30wt% of the quality of acrylic acid, the over cure of addition
The quality of sour ammonium is the 0.6% of the quality of acrylic acid, and the quality of the PEGMa polyethylene glycol maleate of addition is the quality of acrylic acid
0.8%.
Then, using in potassium hydroxide and acrylic acid, the first mixed liquor is obtained；Amidin is added in above-mentioned bentonite
In, obtain the second mixed liquor, wherein the mass ratio by the first mixed liquor and the second mixed liquor is in terms of 1:1 is, in the second mixed liquor
The quality of starch is 6% of acrylic acid quality in the first mixed liquor, and montmorillonite powder content is 98wt% or more in the second mixed liquor
Bentonitic quality be the first mixed liquor in acrylic acid quality 12%；By the first mixed liquor and the second mixed liquor by 1:1's
Mass ratio is mixed, and is obtained third mixed liquor, nitrogen is passed through in Xiang Suoshu third mixed liquor, and in 45 DEG C of temperature
Under 2min is heated to the third mixed liquor, then place it in uv photopolymerization reaction unit, irradiate 50min at 60 DEG C,
React said components sufficiently；Third mixed liquor after the reaction was completed is placed in drying in 120 DEG C of vacuum drying oven again,
Then it crushes, obtains preliminary modified alta-mud powder.
Then, above-mentioned preliminary 50 mass parts of modified alta-mud powder, modified 25 mass parts of pine powder, 3 mass of asphalt emulsion are taken
Part, it puts into double screw extruder and crushes, extrusion temperature is 165 DEG C, obtains modified alta-mud.
Case 5
Firstly, selecting natural sodium bentonite, after drying and crushing, through multi-stage water wash desanding, screening purifies to montmorillonite and contains
Amount is 98wt% or more, then is crushed to 1600 mesh, obtains bentonite in powder.
Then, a certain amount of pine powder is taken, suitable quantity of water is added and stirs to being completely dispersed uniformly, sequentially adds persulfuric acid
The acrylic acid solution and PEGMa polyethylene glycol maleate that ammonium, potassium hydroxide neutralize, obtain the 4th mixed liquor；First by the 4th mixing
Liquid is warming up to 45 DEG C, makes to carry out initial reaction between the said components of the 4th mixed liquor, then the 4th after initial reaction is mixed
Liquid is put into 110 DEG C of baking oven, so that the 4th mixed liquor is continued polymerization, sufficiently reaction, is then dried；Again by the pine powder after drying
It crushes, obtains modified pine powder.Wherein, the quality of the pine powder of addition is the 35wt% of the quality of acrylic acid, the over cure of addition
The quality of sour ammonium is the 0.6% of the quality of acrylic acid, and the quality of the PEGMa polyethylene glycol maleate of addition is the quality of acrylic acid
0.8%.
Then, using in potassium hydroxide and acrylic acid, the first mixed liquor is obtained；Amidin is added in above-mentioned bentonite
In, obtain the second mixed liquor, wherein the mass ratio by the first mixed liquor and the second mixed liquor is in terms of 1:1 is, in the second mixed liquor
The quality of starch is 6% of acrylic acid quality in the first mixed liquor, and montmorillonite powder content is 98wt% or more in the second mixed liquor
Bentonitic quality be the first mixed liquor in acrylic acid quality 18%；By the first mixed liquor and the second mixed liquor by 1:1's
Mass ratio is mixed, and is obtained third mixed liquor, nitrogen is passed through in Xiang Suoshu third mixed liquor, and in 45 DEG C of temperature
Under 2min is heated to the third mixed liquor, then place it in uv photopolymerization reaction unit, irradiate 50min at 60 DEG C,
React said components sufficiently；Third mixed liquor after the reaction was completed is placed in drying in 120 DEG C of vacuum drying oven again,
Then it crushes, obtains preliminary modified alta-mud powder.
Then, above-mentioned preliminary 55 mass parts of modified alta-mud powder, modified 30 mass parts of pine powder, 3 mass of asphalt emulsion are taken
Part, it puts into double screw extruder and crushes, extrusion temperature is 145 DEG C, obtains modified alta-mud.
The modified alta-mud obtained in above-mentioned five cases is subjected to swelling value (mL)/water imbibition test, water-retaining property respectively
Test and salt tolerance test, specific test mode are as follows:
Swelling value (mL)/water imbibition: it weighs dry soil samples 1.5g and is put into the measuring cylinder with stopper of 100mL, then be added into graduated cylinder
Then the ammonium chloride solution of the 1mol/L concentration of 5mL adds water to 100mL and shakes up, standing is read afterwards for 24 hours.
Water-retaining property: weighing a certain amount of gel for fully absorbing moisture, be put into constant temperature oven, in 115 degrees Celsius of lower constant temperature
It is dry, it weighs after 1h, calculates water retention.
Salt tolerance: the gel for fully absorbing deionized water of certain mass is placed in ultra-fine nylon cloth bag, by nylon cloth
Bag is placed in 0.9%NaCl aqueous solution, is weighed after 20min, and percentage of water loss is calculated.
For the modified alta-mud of above-mentioned five cases after above-mentioned three performance tests, properties are as shown in table 1 below.
1 case 1 of table to case 5 performance comparison
Wherein, swelling value (mL)/water absorption rate ratio is bigger, illustrates that bentonitic expansion character is better；The ratio of water retention
Value is higher, illustrates that bentonitic water retention property is better；The ratio of percentage of water loss is lower, illustrates that bentonitic salt tolerance is better.
In conclusion the modified alta-mud prepared using method described in the present embodiment, first after acrylic acid modified
Step modified alta-mud powder and modified pine powder all have acrylic molecules chain, according to similar compatibility principle, when preliminary bentone
After native powder and modified pine powder mixing, modified pine powder can be better dispersed in preliminary modified alta-mud powder, significantly improved and changed
The bentonitic quality of property, makes it have excellent performance, that is, the water imbibition (expansion character) of modified alta-mud, water-retaining property and
Salt tolerance has obtained large increase.
Specific embodiment is applied in the present invention, and principle and implementation of the present invention are described, above embodiments
Explanation be merely used to help understand method and its core concept of the invention；At the same time, for those skilled in the art,
According to the thought of the present invention, there will be changes in the specific implementation manner and application range, in conclusion in this specification
Appearance should not be construed as limiting the invention.
Claims (9)
1. a kind of method for preparing modified bentonite, which comprises the following steps:
By natural montmorillonite drying and crushing, through washing desanding, purify to montmorillonite powder content be 98wt% or more, then crush
To 1000-2000 mesh, bentonite in powder is obtained；
Above-mentioned bentonite in powder be tentatively modified, preliminary modified alta-mud powder is obtained；
Pine powder is modified, modified pine powder is obtained；
The preliminary bentonite in powder of 45-55 mass parts, the modified pine powder of 25-35 mass parts, 1-5 mass parts asphalt emulsion investment are squeezed out
In device, 125-175 DEG C at a temperature of squeeze out, obtain modified alta-mud.
2. method for preparing modified bentonite according to claim 1, which is characterized in that in step " to above-mentioned bentonite
Powder be tentatively modified, and obtains preliminary modified alta-mud powder " in, comprising the following steps:
Potassium hydroxide and acrylic acid are neutralized, the first mixed liquor is obtained；
The bentonite that montmorillonite powder content is 98wt% or more is added in amidin, the second mixed liquor is obtained, wherein with
The mass ratio of first mixed liquor and the second mixed liquor is that 1:1 is meter, and the quality of starch is in the first mixed liquor in the second mixed liquor
The 5-10% of acrylic acid quality, the bentonitic quality that montmorillonite powder content is 98wt% or more in the second mixed liquor are first mixed
Close the 10-20% of acrylic acid quality in liquid；
First mixed liquor and the second mixed liquor are mixed by the mass ratio of 1:1, obtain third mixed liquor, Xiang Suoshu
Be passed through protective gas in third mixed liquor, and 40-50 DEG C at a temperature of 1.5-4.5min is heated to the third mixed liquor；
The third mixed liquor that heating is completed, which is placed in irradiation 30-60min in uv photopolymerization reaction unit, fills said components
Divide reaction, irradiation temperature is 50-70 DEG C；
Third mixed liquor after abundant reaction is dried, preliminary modified alta-mud is obtained.
3. method for preparing modified bentonite according to claim 2, which is characterized in that in step " after sufficiently reacting
Third mixed liquor be dried, obtain preliminary modified alta-mud " in, the third mixed liquor after abundant reaction is placed in constant temperature
It is dried in Minton dryer.
4. method for preparing modified bentonite according to claim 2, which is characterized in that in step " after sufficiently reacting
Third mixed liquor be dried, obtain preliminary modified alta-mud " in, using 110-130 DEG C of temperature to abundant reaction after
Third mixed liquor is dried.
5. method for preparing modified bentonite according to claim 2, which is characterized in that the protective gas is nitrogen
Gas.
6. method for preparing modified bentonite according to claim 1, which is characterized in that " carried out to pine powder in step
It is modified, obtain modified pine powder " in, comprising: pine powder is added in water, is completely dispersed pine powder；Again successively to the water
It is middle be added initiator, through in potassium hydroxide and cross acrylic acid solution and crosslinking agent, obtain the 4th mixed liquor；It first will be described
4th mixed liquor, which is warming up between 45-55 DEG C, makes said components carry out initial reaction 1-3h, then the 4th after initial reaction is mixed
Closing liquid and being put into 110-130 DEG C of baking oven makes said components sufficiently react and dry, to obtain modified pine powder；Wherein, add
The quality of the pine powder entered is the 25-35% of the quality of acrylic acid, and the initiator of addition and the quality of crosslinking agent are respectively propylene
The 0.5-1% of the quality of acid.
7. method for preparing modified bentonite according to claim 6, which is characterized in that the initiator is persulfuric acid
Ammonium.
8. method for preparing modified bentonite according to claim 6, which is characterized in that the crosslinking agent is polyethylene glycol
Maleate.
9. a kind of modified alta-mud prepared using method as claimed in any of claims 1 to 8 in one of claims, which is characterized in that
The water absorption rate of the swelling value of the modified alta-mud between 85-92%, water retention between 85-90%, and, the modification
Bentonitic percentage of water loss is between 70-75%.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111909611A (en) * | 2020-08-19 | 2020-11-10 | 成都新柯力化工科技有限公司 | High-elongation anti-sagging polyurethane waterproof coating and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101357971A (en) * | 2008-09-23 | 2009-02-04 | 浙江林学院 | Organic solvent water absorbent and preparation method thereof |
| CN102492070A (en) * | 2011-12-16 | 2012-06-13 | 西北师范大学 | Preparation method for foaming type nutrient composite water-retaining agent |
| CN103588934A (en) * | 2013-11-20 | 2014-02-19 | 宜兴丹森科技有限公司 | Method for preparing salt tolerant super absorbent resin by bentonite |
| CN105521989A (en) * | 2014-10-20 | 2016-04-27 | 国立顺天大学校产学协力团 | Composition for ecological restoration using and method for restoring the degraded ecology by them |
| CN108912282A (en) * | 2018-06-07 | 2018-11-30 | 南京林业大学 | A kind of production method of multiple elements design graft modification high hydroscopic resin |
-
2019
- 2019-04-19 CN CN201910317635.7A patent/CN110054859A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101357971A (en) * | 2008-09-23 | 2009-02-04 | 浙江林学院 | Organic solvent water absorbent and preparation method thereof |
| CN102492070A (en) * | 2011-12-16 | 2012-06-13 | 西北师范大学 | Preparation method for foaming type nutrient composite water-retaining agent |
| CN103588934A (en) * | 2013-11-20 | 2014-02-19 | 宜兴丹森科技有限公司 | Method for preparing salt tolerant super absorbent resin by bentonite |
| CN105521989A (en) * | 2014-10-20 | 2016-04-27 | 国立顺天大学校产学协力团 | Composition for ecological restoration using and method for restoring the degraded ecology by them |
| CN108912282A (en) * | 2018-06-07 | 2018-11-30 | 南京林业大学 | A kind of production method of multiple elements design graft modification high hydroscopic resin |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111909611A (en) * | 2020-08-19 | 2020-11-10 | 成都新柯力化工科技有限公司 | High-elongation anti-sagging polyurethane waterproof coating and preparation method thereof |
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