CN107266646A - One kind support modified version polyurethane sealing Porous materials - Google Patents

One kind support modified version polyurethane sealing Porous materials Download PDF

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CN107266646A
CN107266646A CN201710510316.9A CN201710510316A CN107266646A CN 107266646 A CN107266646 A CN 107266646A CN 201710510316 A CN201710510316 A CN 201710510316A CN 107266646 A CN107266646 A CN 107266646A
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parts
component
porous materials
modified version
polyurethane sealing
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钟雄
季美
潘宏梅
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Zhou Rong
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TRUSYN CHEM-TECH Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40High-molecular-weight compounds
    • C08G18/48Polyethers
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/12Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
    • C08J9/14Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent organic
    • C08J9/142Compounds containing oxygen but no halogen atom
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/18Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20Oxides; Hydroxides
    • C08K3/22Oxides; Hydroxides of metals
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/34Silicon-containing compounds
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K9/00Use of pretreated ingredients
    • C08K9/10Encapsulated ingredients
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K8/00Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
    • C09K8/42Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells
    • C09K8/44Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells containing organic binders only
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2375/00Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
    • C08J2375/04Polyurethanes
    • C08J2375/08Polyurethanes from polyethers

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Sealing Material Composition (AREA)
  • Polyurethanes Or Polyureas (AREA)

Abstract

The invention belongs to mining field of material technology, and in particular to one kind support modified version polyurethane sealing Porous materials.The present invention is made after magnesium chloride mixed liquor and sodium carbonate liquor hybrid filtering by raw material of magnesium chloride, collect Washing of Filter Cake, dry, with sepiolite after calcining, flyash mix grinding sieves, heated again with acrylic acid etc. after ball milling mixing powder, filtering, obtain after filter residue through washing, dry, mill sieving, obtain modified particles, it is again that it is scattered with PPG 330N etc. to obtain component A, and hexamethylene diisocyanate and modified particles are mixed into obtain component B, when using, by component B and component A mixed foamings and curing molding, it can must support modified version polyurethane sealing Porous materials, gained sealing material of the invention is flexible small, it is not compressible, the characteristics of deformation and creep is not susceptible to when using, effective support effect can be played after injection hole, the material plugging action time is long simultaneously, itself is difficult atrophy and cracking, effectively increase mine gas extraction efficiency.

Description

One kind support modified version polyurethane sealing Porous materials
Technical field
The invention belongs to mining field of material technology, and in particular to one kind support modified version polyurethane sealing Porous materials.
Background technology
Gas pumping is control of coalmine gas and the essential measure and main path that utilize.Current coal master's watt to be used This extraction technology is:Extraction borehole is beaten at a certain distance along bearing, is then directly connected with extraction pipeline.But due to gas Close property is bad, the extraction time is short, causes gas extraction concentration and extraction amount not high, in many cases the mash gas concentration of extraction Typically 10~30% or so.Therefore carry out the sealing of hole of extraction borehole, improve extracting result, be that current gas pumping is anxious to be resolved The problem of, while being also more conducive to the comprehensive utilization after gas pumping.The gas of coal extraction fails to be effectively utilized, wherein One be exactly the reason for critically important in the coal mine gas that extraction goes out low concentration gas account for significant proportion, most of low concentration gas because Lack value and be discharged into air, not only cause to waste but also also result in environmental pollution.
Current mash gas pumping drilling sealing material mainly has two kinds of cement mortar and polyurethane.Envelope is used as using cement mortar The operating method of Porous materials is as follows:Cement mortar is made into a certain proportion of cement and sand water mixing, manual sealing of hole or machinery is utilized Pump sealing of hole, could connecting leg progress extraction after theing cement solidifies every 24~36h after finishing.Cement bonded sand slurry processes long construction period, and Contraction distortion and cracking are also easy to produce after dehydration solidification, crack is produced between sealing material and borehole wall and hole sealing tube.Especially water The elastic deformation ability of cement mortar is poor, and because mining induced stress produces minute fissure in the wall of a borehole, sealing material is difficult to squeeze pack. Tunnel air enters drainage tube formation gas short circuit during gas negative pressure extraction, reduces gas drainage under suction concentration.
And it is to use two component polyurethane expanded material to use polyurethane as the operating method of sealing material, make bi-component By a certain percentage after mixture, it is fixed on drainage tube pipe and fills in drilling rapidly after being infiltrated with cotton yarn or towel in glue, glue Liquid chemically reacts in the open space between drilling and drainage tube, foaming, free wxpansion and be solidified into expanded material.Should Product frothing percentage is high, and the material solidification time is short, with excellent anticorrosive, ageing-resistant and sealing property.The product and steel, modeling The materials such as tubing, ore, the hard coal seams such as material have stronger cohesive force.Compared with cement mortar sealing material, with materials it is few, Easy to carry, sealing of hole speed is fast, it is laborsaving the advantages of.
Therefore polyurethane sealing Porous materials have been widely used, the trend of substituted cement mortar.But polyurethane sealing of hole Material has very big elasticity and compressibility there is also some defects, mainly such sealing material, and coal bed drilling is used as one Individual small-sized whole enzymatic method, necessarily deforms and creep under crustal stress and digging disturbed condition.The hardness of polyurethane after foaming Far smaller than seam hardness, effective support effect is can not form to drilling, causes sealing of hole sections drilling surrounding to continue to produce after sealing of hole Raw crack(Later stage leakage path), while polyurathamc itself is also easy to produce atrophy and cracking with time lengthening.Therefore two more than Planting reason causes gas extraction concentration relatively low, and extraction concentration decay is too fast, largely reduces gas pumping effect.
In summary, for the shortcoming of existing polyurethane sealing Porous materials, it is badly in need of improving the power of polyurethane sealing Porous materials at present Performance and resistance to shrinkage is learned to improve gas pumping effect.
The content of the invention
Present invention mainly solves technical problem:Have for existing polyurethane sealing Porous materials very big elastic and compressible Property, deformed when using and creep, effective support effect is can not form to drilling, caused around sealing of hole sections drilling after sealing of hole Continue to produce crack, and material itself is also easy to produce atrophy and the defect ftractureed with time lengthening and supports modified version there is provided one kind Polyurethane sealing Porous materials.
In order to solve the above-mentioned technical problem, the technical solution adopted in the present invention is:
One kind support modified version polyurethane sealing Porous materials, are made up of 45~50 parts by weight of component A and 10~15 parts by weight of component B, After component A and component B stirrings mixing and stand foaming, 3~5h of spontaneous curing is prepared into a kind of support modified version polyurethane sealing Porous materials;
Described component A constitutes parts by weight:By 45~50 parts of PPG 330N, 0.5~1.0 part of N, N- dimethyleyelohexanes Alkane, 2~3 parts of foaming agent AES and 10~15 parts of modified particles compositions;
Described component B constitutes parts by weight:By 45~50 parts of hexamethylene diisocyanates and 10~15 parts of modified particles groups Into.
Described modified particles preparation process is:
(1)In mass ratio 1:10, magnesium chloride is added in deionized water, pH is to 5.0 for regulation, magnesium chloride mixed liquor is obtained, by chlorine Change magnesium mixed liquor to be added in crystallizer, after heating water bath, to 1mol/L sodium carbonate liquors are added dropwise in crystallizer;
(2)After being added dropwise to complete, stand cooling, filter to obtain filter cake, washing, dry granular precursor forge granular precursor After burning, standing is cooled to room temperature, obtains calcining particle;
(3)Count by weight, 45~50 parts of calcining particles are weighed respectively, 15~20 parts of sepiolites and 1~2 part of flyash are placed in In ball grinder, ball milling sieves to obtain ball milling mixing powder;
(4)Count by weight, 45~50 parts of acrylic acid, 1~2 part of potassium peroxydisulfate, 35~40 parts of N, N ' methylene are weighed respectively Stood after bisacrylamide, 10~15 parts of ball milling mixing powder and 100~120 parts of deionized water stirring mixing, heating water bath cold But to room temperature, filter residue is filtered to obtain, washs, dry, milled 100 mesh sieve obtains modified particles.
Step(1)Described regulation pH uses the hydrochloric acid of mass fraction 10%.
Step(1)Described sodium carbonate liquor dripping quantity is 2 times of magnesium chloride mixed liquor quality.
Step(1)Described sodium carbonate liquor time for adding is 10~15min.
Step(2)Described calcining heat is 750~800 DEG C.
The beneficial effects of the invention are as follows:
(1)The present invention is that raw material prepares light calcined magnesia by magnesium chloride, is combined with sepiolite and prepares modified particles, due to modification Particle forms supporter after resin-coating, effectively the internal intensity of enhancing polyurethane material, has polyurethane sealing Porous materials Excellent anti-deformation nature;
(2)The present invention carries out coating modification by high hydroscopic resin to light calcined magnesia and sepiolite, due to polyurethane sealing of hole material Easily generation crack affected by environment, and can not being used when water content is too high when material is used, sealing material prepared by the present invention can Effectively to adsorb moisture content, expanded by water-absorbing resin, filling sealing material crack reduces the crack degree of sealing material, simultaneously The sepiolite and magnesia of inside cladding are met water and reacted, and form the modified effects of double expansions, effective hydration swelling and at it Packing material hole during crystallographic expansion, is densified material internal, while entering to the volume contraction of sealing material during use Row compensation, to polyurethane sealing Porous materials formation supporting effect, improves the materials'use life-span.
Embodiment
In mass ratio 1:10, magnesium chloride is added in deionized water, stirring mixing is simultaneously adjusted with the hydrochloric acid of mass fraction 10% PH obtains magnesium chloride mixed liquor to 5.0, by magnesium chloride mixed liquor be added to crystallizer in, at 45~50 DEG C heating water bath 25~ 30min, is treated after the completion of heating water bath, the 1mol/L sodium carbonate liquors to magnesium chloride 2 times of quality of mixed liquor are added dropwise in crystallizer are controlled Time for adding processed is 10~15min, after being added dropwise to complete, and stands 25~30min of insulation, then stands 2~3h of cooling, and filtering to filter Cake, is washed after 3~5 times respectively with absolute ethyl alcohol and deionized water successively, is dried in vacuo to obtain granular precursor, by granular precursor It is placed at 750~800 DEG C and calcines after 3~5h, standing is cooled to room temperature, obtains calcining particle, counts by weight, 45 are weighed respectively ~50 parts of calcining particles, 15~20 parts of sepiolites and 1~2 part of flyash are placed in ball grinder, the ball milling under 350~400r/min After 3~5h, cross 200 mesh sieves and obtain ball milling mixing powder, count by weight, 45~50 parts of acrylic acid, 1~2 part of mistake are weighed respectively Potassium sulfate, 35~40 parts of N, N ' methylene-bisacrylamides, 10~15 parts of ball milling mixing powder and 100~120 parts of deionized waters It is placed in beaker, stirring mixing is placed in 3~5h of heating water bath at 78~80 DEG C, standing is cooled to room temperature, filters to obtain filter residue, uses After absolute ethyl alcohol is washed 3~5 times, vacuum drying, milled 100 mesh sieve obtains modified particles, counted by weight, weighs respectively 45~50 parts of PPG 330N, 0.5~1.0 part of N, N- dimethyl cyclohexanes, 2~3 parts of foaming agent AES and 10~15 parts change Property particle be placed in beaker, 10~15min of ultrasonic disperse under 200~300W is prepared into component A, then counts by weight, point Also known as measure 45~50 parts of hexamethylene diisocyanates and 10~15 parts of modified particles be placed in beaker, stirring mixes to obtain component B, In use, in mass ratio 1:5, component B is added in component A, after stirring mixing and stand foaming, 3~5h of spontaneous curing, i.e., A kind of support modified version polyurethane sealing Porous materials can be prepared into.
Example 1
In mass ratio 1:10, by magnesium chloride be added to deionized water in, stirring mixing and with the salt acid for adjusting pH of mass fraction 10% extremely 5.0, magnesium chloride mixed liquor is obtained, magnesium chloride mixed liquor is added in crystallizer, heating water bath 25min, treats water-bath at 45 DEG C After the completion of heating, the 1mol/L sodium carbonate liquors to magnesium chloride 2 times of quality of mixed liquor are added dropwise in crystallizer control the time for adding to be 10min, after being added dropwise to complete, stand insulation 25min, then stand cooling 2h, filter to obtain filter cake, successively with absolute ethyl alcohol and go from Sub- water is washed after 3 times respectively, is dried in vacuo to obtain granular precursor, and granular precursor is placed at 750 DEG C and calcined after 3h, is stood cold But to room temperature, calcining particle is obtained, is counted by weight, 45 parts of calcining particles are weighed respectively, 15 parts of sepiolites and 1 part of flyash are put In ball grinder, under 350r/min after ball milling 3h, cross 200 mesh sieves and obtain ball milling mixing powder, count, weigh respectively by weight 45 parts of acrylic acid, 1 part of potassium peroxydisulfate, 35 parts of N, N ' methylene-bisacrylamides, 10 parts of ball milling mixing powder and 100 parts of deionizations Water is placed in beaker, and stirring mixing is placed in heating water bath 3h at 78 DEG C, and standing is cooled to room temperature, filters to obtain filter residue, with anhydrous After ethanol is washed 3 times, vacuum drying, milled 100 mesh sieve obtains modified particles, counted by weight, and 45 parts of polyethers are weighed respectively Polyalcohol 330N, 0.5 part of N, N- dimethyl cyclohexanes, 2 parts of foaming agent AES and 10 parts of modified particles are placed in beaker, in 200W Lower ultrasonic disperse 10min, is prepared into component A, then counts by weight, and 45 parts of hexamethylene diisocyanates and 10 are weighed respectively Part modified particles are placed in beaker, and stirring mixes to obtain component B, in use, in mass ratio 1:5, component B is added in component A, After stirring mixing and stand foaming, spontaneous curing 3h, you can be prepared into a kind of support modified version polyurethane sealing Porous materials.
Example 2
In mass ratio 1:10, by magnesium chloride be added to deionized water in, stirring mixing and with the salt acid for adjusting pH of mass fraction 10% extremely 5.0, magnesium chloride mixed liquor is obtained, magnesium chloride mixed liquor is added in crystallizer, heating water bath 28min, treats water-bath at 48 DEG C After the completion of heating, the 1mol/L sodium carbonate liquors to magnesium chloride 2 times of quality of mixed liquor are added dropwise in crystallizer control the time for adding to be 13min, after being added dropwise to complete, stand insulation 28min, then stand cooling 2h, filter to obtain filter cake, successively with absolute ethyl alcohol and go from Sub- water is washed after 4 times respectively, is dried in vacuo to obtain granular precursor, and granular precursor is placed at 775 DEG C and calcined after 4h, is stood cold But to room temperature, calcining particle is obtained, is counted by weight, 48 parts of calcining particles are weighed respectively, 18 parts of sepiolites and 1 part of flyash are put In ball grinder, under 375r/min after ball milling 4h, cross 200 mesh sieves and obtain ball milling mixing powder, count, weigh respectively by weight 48 parts of acrylic acid, 1 part of potassium peroxydisulfate, 38 parts of N, N ' methylene-bisacrylamides, 13 parts of ball milling mixing powder and 110 parts of deionizations Water is placed in beaker, and stirring mixing is placed in heating water bath 4h at 79 DEG C, and standing is cooled to room temperature, filters to obtain filter residue, with anhydrous After ethanol is washed 4 times, vacuum drying, milled 100 mesh sieve obtains modified particles, counted by weight, and 48 parts of polyethers are weighed respectively Polyalcohol 330N, 0.8 part of N, N- dimethyl cyclohexanes, 2 parts of foaming agent AES and 13 parts of modified particles are placed in beaker, in 250W Lower ultrasonic disperse 13min, is prepared into component A, then counts by weight, and 48 parts of hexamethylene diisocyanates and 13 are weighed respectively Part modified particles are placed in beaker, and stirring mixes to obtain component B, in use, in mass ratio 1:5, component B is added in component A, After stirring mixing and stand foaming, spontaneous curing 4h, you can be prepared into a kind of support modified version polyurethane sealing Porous materials.
Example 3
In mass ratio 1:10, by magnesium chloride be added to deionized water in, stirring mixing and with the salt acid for adjusting pH of mass fraction 10% extremely 5.0, magnesium chloride mixed liquor is obtained, magnesium chloride mixed liquor is added in crystallizer, heating water bath 30min, treats water-bath at 50 DEG C After the completion of heating, the 1mol/L sodium carbonate liquors to magnesium chloride 2 times of quality of mixed liquor are added dropwise in crystallizer control the time for adding to be 15min, after being added dropwise to complete, stand insulation 30min, then stand cooling 3h, filter to obtain filter cake, successively with absolute ethyl alcohol and go from Sub- water is washed after 5 times respectively, is dried in vacuo to obtain granular precursor, and granular precursor is placed at 800 DEG C and calcined after 5h, is stood cold But to room temperature, calcining particle is obtained, is counted by weight, 50 parts of calcining particles are weighed respectively, 20 parts of sepiolites and 2 parts of flyash are put In ball grinder, under 400r/min after ball milling 5h, cross 200 mesh sieves and obtain ball milling mixing powder, count, weigh respectively by weight 50 parts of acrylic acid, 2 parts of potassium peroxydisulfates, 40 parts of N, N ' methylene-bisacrylamides, 15 parts of ball milling mixing powder and 120 parts of deionizations Water is placed in beaker, and stirring mixing is placed in heating water bath 5h at 80 DEG C, and standing is cooled to room temperature, filters to obtain filter residue, with anhydrous After ethanol is washed 5 times, vacuum drying, milled 100 mesh sieve obtains modified particles, counted by weight, and 50 parts of polyethers are weighed respectively Polyalcohol 330N, 1.0 parts of N, N- dimethyl cyclohexanes, 3 parts of foaming agent AES and 15 parts of modified particles are placed in beaker, in 300W Lower ultrasonic disperse 15min, is prepared into component A, then counts by weight, and 50 parts of hexamethylene diisocyanates and 15 are weighed respectively Part modified particles are placed in beaker, and stirring mixes to obtain component B, in use, in mass ratio 1:5, component B is added in component A, After stirring mixing and stand foaming, spontaneous curing 5h, you can be prepared into a kind of support modified version polyurethane sealing Porous materials.
Comparative example:The bi-component gas in mine sealing material of Shandong industrial and mineral goods and materials Co., Ltd production.
Application method:It will be poured into after A, B stirring mixing of sealing material in grouting pump, using pumping mode, by sealing of hole material Material injection extraction borehole in, it is to be implanted after the completion of, stand foaming solidify 3~5h can complete sealing of hole.
According to above-mentioned application method, respectively will the obtained support modified version polyurethane sealing Porous materials of present example 1~3 and Sealing of hole is carried out in the bi-component gas in mine sealing material injection extraction borehole of comparative example, and sealing material performance is carried out Detection, its testing result is as shown in table 1:
Table 1
In summary, present invention gained support modified version polyurethane sealing Porous materials it is flexible it is small, not compressible, be difficult when using Deform and the characteristics of creep, effective support effect can be played after injection hole, while the material plugging action time is long, itself Atrophy and cracking are difficult, mine gas extraction efficiency is effectively increased.

Claims (6)

1. one kind support modified version polyurethane sealing Porous materials, it is characterised in that by 45~50 parts by weight of component A and 10~15 weight Part component B compositions, after component A and component B stirrings mixing and stand foaming, 3~5h of spontaneous curing is prepared into one kind support and changed Property type polyurethane sealing material;
Described component A constitutes parts by weight:By 45~50 parts of PPG 330N, 0.5~1.0 part of N, N- dimethyleyelohexanes Alkane, 2~3 parts of foaming agent AES and 10~15 parts of modified particles compositions;
Described component B constitutes parts by weight:By 45~50 parts of hexamethylene diisocyanates and 10~15 parts of modified particles groups Into.
2. a kind of support modified version polyurethane sealing Porous materials according to claim 1, it is characterised in that described modification Grain preparation process be:
(1)In mass ratio 1:10, magnesium chloride is added in deionized water, pH is to 5.0 for regulation, magnesium chloride mixed liquor is obtained, by chlorine Change magnesium mixed liquor to be added in crystallizer, after heating water bath, to 1mol/L sodium carbonate liquors are added dropwise in crystallizer;
(2)After being added dropwise to complete, stand cooling, filter to obtain filter cake, washing, dry granular precursor forge granular precursor After burning, standing is cooled to room temperature, obtains calcining particle;
(3)Count by weight, 45~50 parts of calcining particles are weighed respectively, 15~20 parts of sepiolites and 1~2 part of flyash are placed in In ball grinder, ball milling sieves to obtain ball milling mixing powder;
(4)Count by weight, 45~50 parts of acrylic acid, 1~2 part of potassium peroxydisulfate, 35~40 parts of N, N ' methylene are weighed respectively Stood after bisacrylamide, 10~15 parts of ball milling mixing powder and 100~120 parts of deionized water stirring mixing, heating water bath cold But to room temperature, filter residue is filtered to obtain, washs, dry, milled 100 mesh sieve obtains modified particles.
3. a kind of support modified version polyurethane sealing Porous materials according to claim 2, it is characterised in that:Step(1)It is described Regulation pH use the hydrochloric acid of mass fraction 10%.
4. a kind of support modified version polyurethane sealing Porous materials according to claim 2, it is characterised in that:Step(1)It is described Sodium carbonate liquor dripping quantity be 2 times of magnesium chloride mixed liquor quality.
5. a kind of support modified version polyurethane sealing Porous materials according to claim 2, it is characterised in that:Step(1)It is described Sodium carbonate liquor time for adding be 10~15min.
6. a kind of support modified version polyurethane sealing Porous materials according to claim 2, it is characterised in that:Step(2)It is described Calcining heat be 750~800 DEG C.
CN201710510316.9A 2017-06-28 2017-06-28 One kind support modified version polyurethane sealing Porous materials Pending CN107266646A (en)

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Cited By (1)

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CN101519586A (en) * 2009-03-31 2009-09-02 黄华 Rapid hardening and drilling expanding agent
CN101519288A (en) * 2009-04-03 2009-09-02 南京瑞迪高新技术公司 Special additive for underwater undispersed shrinking-free grouting material
CN101870575A (en) * 2010-06-13 2010-10-27 成都威邦科技有限公司 Hydropower station pressure pipeline grouting construction method and gel material
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CN105925252A (en) * 2016-05-10 2016-09-07 吴迪 Preparation method of sepiolite-modified high-strength plugging agent
CN106008880A (en) * 2016-06-25 2016-10-12 丁玉琴 Preparation method of anti-cracking microporous framework pore sealing material
CN106498965A (en) * 2016-12-05 2017-03-15 广西大学 A kind of karst area water sealing consolidation construction method

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CN114774094A (en) * 2022-04-22 2022-07-22 中国海洋石油集团有限公司 Permanent type blast hole plugging material used after screen pipe perforation and preparation method

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