CN106010569A - Organic-inorganic compound chemical sand fixing agent and preparation method thereof - Google Patents
Organic-inorganic compound chemical sand fixing agent and preparation method thereof Download PDFInfo
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- CN106010569A CN106010569A CN201610453775.3A CN201610453775A CN106010569A CN 106010569 A CN106010569 A CN 106010569A CN 201610453775 A CN201610453775 A CN 201610453775A CN 106010569 A CN106010569 A CN 106010569A
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K17/00—Soil-conditioning materials or soil-stabilising materials
- C09K17/40—Soil-conditioning materials or soil-stabilising materials containing mixtures of inorganic and organic compounds
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Abstract
The invention discloses an organic-inorganic compound chemical sand fixing agent. The organic-inorganic compound chemical sand fixing agent is prepared from, by weight, 4-6 parts of polyvinyl acetate, 1-3 parts of anionic polyacrylamide, 4-6 parts of silica sol, 1-3 parts of calcium chloride, 1-3 parts of sodium carbonate, 1-3 parts of styrene-acrylic emulsion and 15-81 parts of water. The invention further discloses a preparation method of the organic-inorganic compound chemical sand fixing agent. The organic-inorganic compound chemical sand fixing agent has a good sand fixing effect, when the organic-inorganic compound chemical sand fixing agent is sprayed to the surface of sand, a net coating film can be formed easily to wrap the sand grains, and a stable and solid sand crust is formed. The formed sand crust is not likely to be broken, has certain toughness and facilitates water seepage, stability can be kept after the sand crust is in contact with water, and the sand fixing effect is enhanced. The preparation method of the organic-inorganic compound chemical sand fixing agent is simple, controllability is high, the preparation conditions are mild, the preparation time is short, the yield is high, the raw materials are easy to obtain, few raw materials are adopted, cost is reduced, and the pollution of the organic-inorganic compound chemical sand fixing agent to the environment is reduced.
Description
Technical field
The present invention relates to a kind of organic-inorganic composite sand-consolidating agent and preparation method thereof, particularly belong to sand-consolidating agent technical field.
Background technology
Since 1949, China's research worker, through constantly groping, has developed and fixes the sand with more ripe engineering and biological
Fix the sand as more than 100 kind of desert treatment technology of representative and control models.But these modes of fixing the sand exist manpower to be expended greatly, executes
The problems such as work is slow, cost is high, benefit is low, to such an extent as to cannot be widely popularized and implement.And chemical sand-fixing technology and new chemical
Sand fixation material because its cost is few, fast and easy, efficiency high and fix the sand in market of increasing concern.China is in 20th century 60
Age occurs in that the research and experiment of chemical sand-fixing, and achieves certain effect.
The research of external chemical sand-fixing starts from the thirties in 20th century, and obtains large development in the fifties.Up to now, generation
In boundary, existing more than 40 country have developed more than 150 kind of chemical sand fixing material, and portion of material has been put into desert treatment practice and worked as
In, it is used for improving sand ground, checks winds and fixes drifting sand.Traditional chemical sand fixing material can be divided into: waterglass class, high molecular polymer height are inhaled
Water-resin class, cement mortar class and oil product class.Compared with traditional chemical sand-fixing materials, New Chemical Material in Sand Fixation is because of it not only
Serviceability is good, and decreases the consumption of resource and the energy, payes attention to having arrived ecological environment harmony and the compatibility, so having more
Big practicality and Developing Extension potentiality.New Chemical Material in Sand Fixation includes: the composite sand consolidation material of organic and inorganic synthesis, micro-life
Several big classes such as thing sand fixation material and ecological environment sand fixation material.
The most water retention property of composite sand consolidation material of organic and inorganic synthesis in the market is not good enough, and ageing resistance is more weak, and shape
Become husky skinning stability low, easily broken and relatively costly, be actually not suitable for large-scale use.Therefore, research one can
Solve the organic-inorganic composite sand-consolidating agent of the problems referred to above, it appears particularly necessary.
Summary of the invention
For solving the deficiencies in the prior art, it is an object of the invention to provide a kind of organic-inorganic composite sand-consolidating agent and preparation thereof
Method, this sand-consolidating agent can form relatively stable, solid husky skinning, have excellent sand-fixing effect, and its preparation method is simple,
Preparation time is short.
In order to realize above-mentioned target, the present invention adopts the following technical scheme that:
A kind of organic-inorganic composite sand-consolidating agent, in parts by weight, is prepared by following components: polyvinyl acetate 4~
6 parts, PAMA 1~3 parts, Ludox 4~6 parts, calcium chloride 1~3 parts, sodium carbonate 1~3 parts, phenylpropyl alcohol
Emulsion 1~3 parts and water 15~81 parts.
Preferably, a kind of organic-inorganic composite sand-consolidating agent, in parts by weight, following components prepare: poly-acetic acid second
Alkene ester 5 parts, PAMA 2 parts, Ludox 5 parts, 2 parts of calcium chloride, sodium carbonate 2 parts, styrene-acrylic emulsion 2 parts
With 45 parts of water.
The preparation method of a kind of organic-inorganic composite sand-consolidating agent, comprises the following steps: S1, the pretreatment of polyvinyl acetate;
S2, prepare organic-inorganic composite sand-consolidating agent.
The preparation method of aforementioned organic-inorganic composite sand-consolidating agent, specifically includes following steps:
S1, the pretreatment of polyvinyl acetate: take polyvinyl acetate warming while stirring, heat up and continue heated at constant temperature after terminating
Stirring, obtains pretreated polyvinyl acetate, standby;
S2, prepare organic-inorganic composite sand-consolidating agent:
S2.1, take PAMA and be scattered in deionized water, be slowly dropped into through the pretreated polyvinyl acetate of S1
In, taking Ludox subsequently and be slowly dropped into, it is standby that stirring obtains solution A;
S2.2, take the calcium chloride water and aqueous sodium carbonate prepared, after mixing, obtain nano-calcium carbonate dispersion liquid, instill
In solution A, it is standby that stirring obtains solution B;
S2.3, taking styrene-acrylic emulsion and instill in solution B, stirring obtains organic-inorganic composite sand-consolidating agent.
Further, the preparation method of aforementioned organic-inorganic composite sand-consolidating agent, comprise the following steps:
S1, the pretreatment of polyvinyl acetate: take polyvinyl acetate warming while stirring to 70 DEG C~90 DEG C, heat up after terminating
Continue heated at constant temperature stirring 25~35min, obtain pretreated polyvinyl acetate, standby;
S2, prepare organic-inorganic composite sand-consolidating agent:
S2.1, take PAMA and be scattered in deionized water at 38 DEG C~42 DEG C, be slowly dropped into through S1 pretreatment
After polyvinyl acetate in, at 70 DEG C~80 DEG C, stir 20~25min, take Ludox subsequently and be slowly dropped into, then at 70 DEG C~
Stir 20~25min at 80 DEG C, obtain solution A standby;
S2.2, take the calcium chloride water and aqueous sodium carbonate prepared, after mixing, obtain nano-calcium carbonate dispersion liquid, instill
In solution A, stirring 20~25min at 70 DEG C~80 DEG C, to obtain solution B standby;
S2.3, take styrene-acrylic emulsion and instill in solution B, at 70 DEG C~80 DEG C, stir 20~30min, be down to the most while stirring
Room temperature obtains organic-inorganic composite sand-consolidating agent.
The preparation method of aforementioned organic-inorganic composite sand-consolidating agent, in step S2.2, calcium chloride water is that mass fraction is
The calcium chloride water of 20%~25%, aqueous sodium carbonate be mass fraction be the aqueous sodium carbonate of 20%~25%;
The preparation method of aforementioned organic-inorganic composite sand-consolidating agent, in step S2.2, calcium chloride water, sodium carbonate are water-soluble
Liquid is prepared by following steps: removes ionized water and is heated to 30 DEG C~40 DEG C, is separately added into calcium chloride, sodium carbonate, stirring and dissolving
Obtain.It is heated to 30 DEG C~40 DEG C, on the one hand can accelerate to dissolve;On the other hand, in this temperature range, dissolving is being ensured
In the case of, will not be too high and make raw material that unnecessary reaction to occur due to temperature.
The preparation method of aforementioned organic-inorganic composite sand-consolidating agent, in step S2, instilling speed is 10~13 milliliters per minute.
The preparation method of aforementioned organic-inorganic composite sand-consolidating agent, in step S1 and S2, mixing speed is 400~500r/s.
Raw material rapid dispersion can be made, do not reunite.
The preparation method of aforementioned organic-inorganic composite sand-consolidating agent, in step S2.1, according to mass ratio, anion pp
Amide deionized water=5~10 90~95, are scattered in deionized water by PAMA.
The present invention selects polyvinyl acetate, on the one hand simple due to its membrance casting condition, it is possible to prevent moisture to evaporate, fresh-keeping work
With becoming apparent from, on the other hand cost can be reduced.Polyacrylamide, easily in network structure, uses PAMA
Easily make molecular structure combine closely, make network structure more firm, intensive.Compared with prior art, in the raw material of the present invention not
Use sodium tetraborate, it is to avoid the impact that the hypertoxicity of sodium tetraborate produces.The present invention uses styrene-acrylic emulsion, due to it easily
Film forming, and water-fast excellent with alkaline resistance properties.After adding styrene-acrylic emulsion, the ageing resistance of gained sand-consolidating agent strengthens.
Inventor's organic-inorganic composite sand-consolidating agent to preparing, has carried out a series of performance test.Use the present invention's
After sand drift is sprayed by organic-inorganic composite sand-consolidating agent, the husky skinning formed is carried out following performance test:
1, comprcssive strength: comprcssive strength determines the stability of husky skinning, and destroyed complexity to a great extent.
Comprcssive strength is the highest, and husky skinning is more difficult to be destroyed, cost-effective while improving plant protection ability.First by sand-consolidating agent
It is diluted with water to 5 times, adds experiment soil, put into the test specimen that Standard Module is made, mould ф 100mm, the demoulding after 24h;So
After at room temperature (20~25 DEG C) maintenance one week, lab simulation material pressure testing machine is tested.Analog reslt shows,
When matrix material consumption is constant, husky skinning thickness increases with styrene-acrylic emulsion consumption and increases, 2.0~2.2cm preferably, simultaneously
Comprcssive strength strengthens, and is substantially above international standard (1MPa), and maximum can reach 1.30MPa.
2, seepage of water: husky skinning is on the grains of sand, and its infiltration degree determines whether plant can normally survive, therefore, husky skinning
Must have good seepage of water.During natural precipitation, light rain is 10mm with the precipitation boundary of moderate rain, i.e. 10L/m2.By 10L/m2
The surface of husky skinning that formed of consumption spray sand-consolidating agent, observe its infiltration situation.The die trial of 10cm thickness sprays
Penetration testing, by measuring length of penetration, finds 30s infiltration depth capacity 4.5cm, and 1min depth capacity is 9.5cm, this
Time sand skinning seepage of water best.And if the scheme in priority of use patent ZL201410595231, use analytically pure polypropylene
Amide 30s seeps water depth capacity 2cm, and 1min depth capacity is 4cm.Visible polyacrylamide is defined to anionic poly-third
After acrylamide, permeability performance is significantly improved.
3, water-retaining property: husky skinning not only should have good seepage of water, also to have good water-retaining property, i.e. keep the moisture in soil.
While preventing and fixing sand, also maintain the moisture in soil, be more favorable for the growth of plant.First quantitative experiment sandy soil are divided equally
Being four parts, be respectively charged in glass guide channel, then by its superficial compaction, its pore size is more than 8 μm, then sprays sand-consolidating agent.
Stand the sufficiently long time, to guarantee husky skinning surfaces sufficiently dry and interior moisture content approximately equal.Pour appropriate steaming afterwards into
Distilled water, measures husky skinning moisture content now, then Timing measurement moisture content by weight method.Over time, husky skinning
Moisture content can reduce always, until doing minor variations close to a definite value.The husky skinning of experiment discovery its moisture content after about 140 hours
Being 39.7%, the husky skinning formed compared to the sand-consolidating agent obtained in first patent ZL201410595231, after about 140 hours, it contains
Water rate is 35.7%, and water retention property has promoted.
4, wind erosion-resistance performance: have the wind that wind-force, wind speed are different in nature, and in nature the sand and dust of soil surface are the most with the wind
And rise, produce the even sandstorm of airborne dust, sand therewith.After using sand-consolidating agent to form husky skinning, it is effective against wind erosion, reaches
Preventing and fixing sand effect.In order to verify the resisting wind erosion of husky skinning, first by sand-consolidating agent dilute with water 5 times, it is sprayed on sand table surface;
It is subsequently adding 0.40g mother solution, puts into the test specimen that Standard Module is made;Then 30min is blown continuously at wind speed 45m/min, then
Blow 5min in the case of wind speed 70m/min, be showed no dirt and wind erosion phenomenon.
5, freeze-thaw resistance: in order to verify the freeze-thaw resistance of husky skinning, first sand skinning is put into refrigerator-freezer, at-10 DEG C~-5 DEG C
Carrying out freezing observation experiment under freezing conditions, after 24 hours, taking-up places into and carries out high temperature experiment in 55~65 DEG C of baking ovens, and 24
Taking out after hour and observe, all there is not broken situation in husky skinning.
The invention have benefit that: a kind of organic-inorganic composite sand-consolidating agent that the present invention provides, is by organic polymer
Uniformly it is combined with inorganic nano-particle and obtains, there is excellent sand-fixing effect.The sand-consolidating agent of the present invention due to have benzene ring structure and
Anion, is sprayed on sand surface and is easily formed netted bag overlay film, be coated on the grains of sand, forms relatively stable, solid husky skinning.
The husky skinning formed is non-friable, has certain toughness, it is easy to infiltration, can keep stability after meeting water, is more suitable for plant raw
Long, strengthen sand-fixing effect to a certain extent.Water retention property is good, and ageing resistance is strong.The nanometer formed by calcium chloride and sodium carbonate
Level calcium carbonate, effectively overcomes the reunion of calcium carbonate nano particle, adds the most compound of organic and inorganic component, not only makes
Chain more tight between each chemical bond, and effectively reduce the sedimentation of sand-consolidating agent, strengthen sand-fixing effect.The system of the present invention
Preparation Method is simple, and controllability is strong, and preparation condition is gentle, and preparation time is short, and yield is high, and raw material is easy to get and consumption reduces into less
This, reduce its pollution to environment.
Accompanying drawing explanation
Fig. 1 is the preparation method flow chart of the organic-inorganic composite sand-consolidating agent of the present invention.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is further introduced.
Embodiment 1
A kind of organic-inorganic composite sand-consolidating agent, in parts by weight, is prepared by following components: polyvinyl acetate 4
Part, PAMA 1 part, Ludox 4 parts, 1 part of calcium chloride, sodium carbonate 1 part, styrene-acrylic emulsion 1 part and water 15
Part.
The preparation method of organic-inorganic composite sand-consolidating agent, comprises the following steps:
S1, the pretreatment of polyvinyl acetate: take polyvinyl acetate warming while stirring to 70 DEG C, heat up and continue perseverance after terminating
Temperature heated and stirred 35min, obtains pretreated polyvinyl acetate, standby;Wherein, mixing speed is 400r/s;
S2, prepare organic-inorganic composite sand-consolidating agent:
S2.1, take PAMA and be scattered in deionized water at 38 DEG C, be slowly dropped into through S1 pretreated poly-
In vinylacetate, at 70 DEG C, stir 20min, take Ludox subsequently and be slowly dropped into, then at 80 DEG C, stir 25min,
Standby to solution A;Wherein, according to mass ratio, PAMA deionized water=10 90, mixing speed is 500r/s,
Instilling speed is 10 milliliters per minute;
S2.2, take the calcium chloride water and aqueous sodium carbonate prepared, after mixing, obtain nano-calcium carbonate dispersion liquid, instill
In solution A, stirring 20min at 70 DEG C, mixing speed is 500r/s, obtains solution B standby;Wherein, instilling speed is
10 milliliters per minute;Calcium chloride water be mass fraction be the calcium chloride water of 25%, aqueous sodium carbonate is mass fraction
It it is the aqueous sodium carbonate of 25%;
S2.3, taking styrene-acrylic emulsion and instill in solution B, instilling speed is 10 milliliters per minute, stirs 30min at 70 DEG C,
Mixing speed is 400r/s, is down to room temperature the most while stirring and obtains organic-inorganic composite sand-consolidating agent.
Embodiment 2
A kind of organic-inorganic composite sand-consolidating agent, in parts by weight, is prepared by following components: polyvinyl acetate 6
Part, PAMA 3 parts, Ludox 6 parts, 3 parts of calcium chloride, sodium carbonate 3 parts, styrene-acrylic emulsion 3 parts and water 81
Part.
The preparation method of organic-inorganic composite sand-consolidating agent, comprises the following steps:
S1, the pretreatment of polyvinyl acetate: take polyvinyl acetate warming while stirring to 90 DEG C, heat up and continue perseverance after terminating
Temperature heated and stirred 25min, obtains pretreated polyvinyl acetate, standby;Wherein, mixing speed is 500r/s;
S2, prepare organic-inorganic composite sand-consolidating agent:
S2.1, take PAMA and be scattered in deionized water at 42 DEG C, be slowly dropped into through S1 pretreated poly-
In vinylacetate, at 80 DEG C, stir 25min, take Ludox subsequently and be slowly dropped into, then at 70 DEG C, stir 20min,
Standby to solution A;Wherein, according to mass ratio, PAMA deionized water=5 95, mixing speed is 400r/s,
Instilling speed is 13 milliliters per minute;
S2.2, take the calcium chloride water and aqueous sodium carbonate prepared, after mixing, obtain nano-calcium carbonate dispersion liquid, instill
In solution A, stirring 25min at 80 DEG C, mixing speed is 400r/s, obtains solution B standby;Wherein, instilling speed is
13 milliliters per minute;Calcium chloride water be mass fraction be the calcium chloride water of 20%, aqueous sodium carbonate is mass fraction
It it is the aqueous sodium carbonate of 20%;
S2.3, taking styrene-acrylic emulsion and instill in solution B, instilling speed is 13 milliliters per minute, stirs 20min at 80 DEG C,
Mixing speed is 500r/s, is down to room temperature the most while stirring and obtains organic-inorganic composite sand-consolidating agent.
Embodiment 3
A kind of organic-inorganic composite sand-consolidating agent, in parts by weight, is prepared by following components: polyvinyl acetate 5
Part, PAMA 2 parts, Ludox 5 parts, 2 parts of calcium chloride, sodium carbonate 2 parts, styrene-acrylic emulsion 2 parts and water 45
Part.
The preparation method of organic-inorganic composite sand-consolidating agent, comprises the following steps:
S1, the pretreatment of polyvinyl acetate: take polyvinyl acetate warming while stirring to 80 DEG C, heat up and continue perseverance after terminating
Temperature heated and stirred 30min, obtains pretreated polyvinyl acetate, standby;Wherein, mixing speed is 450r/s;
S2, prepare organic-inorganic composite sand-consolidating agent:
S2.1, take PAMA and be scattered in deionized water at 40 DEG C, be slowly dropped into through S1 pretreated poly-
In vinylacetate, at 75 DEG C, stir 22min, take Ludox subsequently and be slowly dropped into, then at 75 DEG C, stir 23min,
Standby to solution A;Wherein, according to mass ratio, PAMA deionized water=6 93, mixing speed is 400r/s,
Instilling speed is 12 milliliters per minute;
S2.2, take the calcium chloride water and aqueous sodium carbonate prepared, after mixing, obtain nano-calcium carbonate dispersion liquid, instill
In solution A, stirring 23min at 75 DEG C, mixing speed is 450r/s, obtains solution B standby;Wherein, instilling speed is
12 milliliters per minute;Calcium chloride water be mass fraction be the calcium chloride water of 22%, aqueous sodium carbonate is mass fraction
It it is the aqueous sodium carbonate of 23%;Calcium chloride water, aqueous sodium carbonate are prepared by following steps: remove ionized water heating
To 30 DEG C, being separately added into calcium chloride, sodium carbonate, stirring and dissolving obtains;
S2.3, taking styrene-acrylic emulsion and instill in solution B, instilling speed is 12 milliliters per minute, stirs 25min at 75 DEG C,
Mixing speed is 500r/s, is down to room temperature the most while stirring and obtains organic-inorganic composite sand-consolidating agent.
Embodiment 4
A kind of organic-inorganic composite sand-consolidating agent, in parts by weight, is prepared by following components: polyvinyl acetate 4.5
Part, PAMA 1.5 parts, Ludox 5.5 parts, 1.2 parts of calcium chloride, sodium carbonate 1.1 parts, styrene-acrylic emulsion 2.5
Part and 24 parts of water.
The preparation method of organic-inorganic composite sand-consolidating agent, comprises the following steps:
S1, the pretreatment of polyvinyl acetate: take polyvinyl acetate warming while stirring to 75 DEG C, heat up and continue perseverance after terminating
Temperature heated and stirred 33min, obtains pretreated polyvinyl acetate, standby;Wherein, mixing speed is 450r/s;
S2, prepare organic-inorganic composite sand-consolidating agent:
S2.1, take PAMA and be scattered in deionized water at 40 DEG C, be slowly dropped into through S1 pretreated poly-
In vinylacetate, at 80 DEG C, stir 23min, take Ludox subsequently and be slowly dropped into, then at 80 DEG C, stir 24min,
Standby to solution A;Wherein, according to mass ratio, PAMA deionized water=9 92, mixing speed is 500r/s,
Instilling speed is 11 milliliters per minute;
S2.2, take the calcium chloride water and aqueous sodium carbonate prepared, after mixing, obtain nano-calcium carbonate dispersion liquid, instill
In solution A, stirring 24min at 78 DEG C, mixing speed is 500r/s, obtains solution B standby;Wherein, instilling speed is
11 milliliters per minute;Calcium chloride water be mass fraction be the calcium chloride water of 21%, aqueous sodium carbonate is mass fraction
It it is the aqueous sodium carbonate of 24%;
S2.3, taking styrene-acrylic emulsion and instill in solution B, instilling speed is 11 milliliters per minute, stirs 21min at 77 DEG C,
Mixing speed is 500r/s, is down to room temperature the most while stirring and obtains organic-inorganic composite sand-consolidating agent.
Embodiment 5
A kind of organic-inorganic composite sand-consolidating agent, in parts by weight, is prepared by following components: polyvinyl acetate 5.5
Part, PAMA 2.9 parts, Ludox 4.5 parts, 2.8 parts of calcium chloride, sodium carbonate 2.9 parts, styrene-acrylic emulsion 1.8
Part and 61 parts of water.
The preparation method of organic-inorganic composite sand-consolidating agent, comprises the following steps:
S1, the pretreatment of polyvinyl acetate: take polyvinyl acetate warming while stirring to 85 DEG C, heat up and continue perseverance after terminating
Temperature heated and stirred 28min, obtains pretreated polyvinyl acetate, standby;Wherein, mixing speed is 500r/s;
S2, prepare organic-inorganic composite sand-consolidating agent:
S2.1, take PAMA and be scattered in deionized water at 39 DEG C, be slowly dropped into through S1 pretreated poly-
In vinylacetate, at 75 DEG C, stir 24min, take Ludox subsequently and be slowly dropped into, then at 75 DEG C, stir 21min,
Standby to solution A;Wherein, according to mass ratio, PAMA deionized water=7 94, mixing speed is 400r/s,
Instilling speed is 10 milliliters per minute;
S2.2, take the calcium chloride water and aqueous sodium carbonate prepared, after mixing, obtain nano-calcium carbonate dispersion liquid, instill
In solution A, stirring 22min at 72 DEG C, mixing speed is 400r/s, obtains solution B standby;Wherein, instilling speed is
13 milliliters per minute;Calcium chloride water be mass fraction be the calcium chloride water of 21%, aqueous sodium carbonate is mass fraction
It it is the aqueous sodium carbonate of 21%;Calcium chloride water, aqueous sodium carbonate are prepared by following steps: remove ionized water heating
To 40 DEG C, being separately added into calcium chloride, sodium carbonate, stirring and dissolving obtains;
S2.3, taking styrene-acrylic emulsion and instill in solution B, instilling speed is 13 milliliters per minute, stirs 27min at 75 DEG C,
Mixing speed is 450r/s, is down to room temperature the most while stirring and obtains organic-inorganic composite sand-consolidating agent.
Embodiment 6
A kind of organic-inorganic composite sand-consolidating agent, in parts by weight, is prepared by following components: polyvinyl acetate 5.3
Part, PAMA 2.5 parts, Ludox 4.8 parts, 1.9 parts of calcium chloride, sodium carbonate 1.9 parts, styrene-acrylic emulsion 2
Part and 41 parts of water.
The preparation method of organic-inorganic composite sand-consolidating agent, comprises the following steps:
S1, the pretreatment of polyvinyl acetate: take polyvinyl acetate warming while stirring to 80 DEG C, heat up and continue perseverance after terminating
Temperature heated and stirred 26min, obtains pretreated polyvinyl acetate, standby;Wherein, mixing speed is 450r/s;
S2, prepare organic-inorganic composite sand-consolidating agent:
S2.1, take PAMA and be scattered in deionized water at 40 DEG C, be slowly dropped into through S1 pretreated poly-
In vinylacetate, at 70 DEG C, stir 21min, take Ludox subsequently and be slowly dropped into, then at 70 DEG C, stir 22min,
Standby to solution A;Wherein, according to mass ratio, PAMA deionized water=8 91, mixing speed is 450r/s,
Instilling speed is 13 milliliters per minute;
S2.2, take the calcium chloride water and aqueous sodium carbonate prepared, after mixing, obtain nano-calcium carbonate dispersion liquid, instill
In solution A, stirring 21min at 80 DEG C, mixing speed is 450r/s, obtains solution B standby;Wherein, instilling speed is
10 milliliters per minute;Calcium chloride water be mass fraction be the calcium chloride water of 23%, aqueous sodium carbonate is mass fraction
It it is the aqueous sodium carbonate of 24%;Calcium chloride water, aqueous sodium carbonate are prepared by following steps: remove ionized water heating
To 35 DEG C, being separately added into calcium chloride, sodium carbonate, stirring and dissolving obtains;
S2.3, taking styrene-acrylic emulsion and instill in solution B, instilling speed is 10 milliliters per minute, stirs 24min at 72 DEG C,
Mixing speed is 450r/s, is down to room temperature the most while stirring and obtains organic-inorganic composite sand-consolidating agent.
Claims (10)
1. an organic-inorganic composite sand-consolidating agent, it is characterised in that: in parts by weight, following components prepare: poly-vinegar
Vinyl acetate 4~6 parts, PAMA 1~3 parts, Ludox 4~6 parts, calcium chloride 1~3 parts, sodium carbonate 1~
3 parts, styrene-acrylic emulsion 1~3 parts and water 15~81 parts.
Organic-inorganic composite sand-consolidating agent the most according to claim 1, it is characterised in that: in parts by weight, by with
Lower component prepares: polyvinyl acetate 5 parts, PAMA 2 parts, Ludox 5 parts, 2 parts of calcium chloride, carbonic acid
2 parts of sodium, styrene-acrylic emulsion 2 parts and 45 parts of water.
3. the preparation method of organic-inorganic composite sand-consolidating agent as claimed in claim 1 or 2, it is characterised in that: include following
Step: S1, the pretreatment of polyvinyl acetate;S2, prepare organic-inorganic composite sand-consolidating agent.
The preparation method of organic-inorganic composite sand-consolidating agent the most according to claim 3, it is characterised in that: include following step
Rapid:
S1, the pretreatment of polyvinyl acetate: take polyvinyl acetate warming while stirring, heat up and continue heated at constant temperature stirring after terminating,
Obtain pretreated polyvinyl acetate, standby;
S2, prepare organic-inorganic composite sand-consolidating agent:
S2.1, take PAMA and be scattered in deionized water, be slowly dropped in the pretreated polyvinyl acetate of S1,
Taking Ludox subsequently to be slowly dropped into, it is standby that stirring obtains solution A;
S2.2, take the calcium chloride water and aqueous sodium carbonate prepared, after mixing, obtain nano-calcium carbonate dispersion liquid, instill solution
In A, it is standby that stirring obtains solution B;
S2.3, taking styrene-acrylic emulsion and instill in solution B, stirring obtains organic-inorganic composite sand-consolidating agent.
The preparation method of organic-inorganic composite sand-consolidating agent the most according to claim 4, it is characterised in that: include following step
Rapid:
S1, the pretreatment of polyvinyl acetate: take polyvinyl acetate warming while stirring to 70 DEG C~90 DEG C, heat up and continue after terminating
Heated at constant temperature stirring 25~35min, obtains pretreated polyvinyl acetate, standby;
S2, prepare organic-inorganic composite sand-consolidating agent:
S2.1, take PAMA and be scattered in deionized water at 38 DEG C~42 DEG C, be slowly dropped into through S1 pretreated
In polyvinyl acetate, at 70 DEG C~80 DEG C, stir 20~25min, take Ludox subsequently and be slowly dropped into, then at 70 DEG C~80 DEG C
Lower stirring 20~25min, obtains solution A standby;
S2.2, take the calcium chloride water and aqueous sodium carbonate prepared, after mixing, obtain nano-calcium carbonate dispersion liquid, instill solution
In A, stirring 20~25min at 70 DEG C~80 DEG C, to obtain solution B standby;
S2.3, take styrene-acrylic emulsion and instill in solution B, at 70 DEG C~80 DEG C, stir 20~30min, be down to room temperature the most while stirring
Obtain organic-inorganic composite sand-consolidating agent.
6. according to the preparation method of the organic-inorganic composite sand-consolidating agent described in claim 4 or 5, it is characterised in that: described step
In rapid S2.2, calcium chloride water be mass fraction be the calcium chloride water of 20%~25%, aqueous sodium carbonate is that quality is divided
Number is the aqueous sodium carbonate of 20%~25%.
7. according to the preparation method of the organic-inorganic composite sand-consolidating agent described in claim 4 or 5, it is characterised in that: described step
In rapid S2.2, calcium chloride water, aqueous sodium carbonate are prepared by following steps: remove ionized water and be heated to 30 DEG C~40 DEG C,
Being separately added into calcium chloride, sodium carbonate, stirring and dissolving obtains.
8. according to the preparation method of the organic-inorganic composite sand-consolidating agent described in claim 4 or 5, it is characterised in that: described step
In rapid S2, instilling speed is 10~13 milliliters per minute.
9. according to the preparation method of the organic-inorganic composite sand-consolidating agent described in claim 4 or 5, it is characterised in that: described step
In rapid S1 and S2, mixing speed is 400~500r/s.
10. according to the preparation method of the organic-inorganic composite sand-consolidating agent described in claim 4 or 5, it is characterised in that: step
In S2.1, according to mass ratio, PAMA deionized water=5~10 90~95, by PAMA
It is scattered in deionized water.
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