CN104231169A - Double-tailed acrylamide hydrophobic associated polymer and preparation method thereof - Google Patents
Double-tailed acrylamide hydrophobic associated polymer and preparation method thereof Download PDFInfo
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- CN104231169A CN104231169A CN201410542758.8A CN201410542758A CN104231169A CN 104231169 A CN104231169 A CN 104231169A CN 201410542758 A CN201410542758 A CN 201410542758A CN 104231169 A CN104231169 A CN 104231169A
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- fiber tip
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- 230000002209 hydrophobic effect Effects 0.000 title claims abstract description 65
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 title claims abstract description 59
- 229920000642 polymer Polymers 0.000 title claims abstract description 37
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 239000000178 monomer Substances 0.000 claims abstract description 45
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000000126 substance Substances 0.000 claims description 46
- 239000000835 fiber Substances 0.000 claims description 30
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 12
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 11
- 239000004141 Sodium laurylsulphate Substances 0.000 claims description 11
- 235000019333 sodium laurylsulphate Nutrition 0.000 claims description 11
- 238000006243 chemical reaction Methods 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 239000013543 active substance Substances 0.000 claims description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 5
- 239000012153 distilled water Substances 0.000 claims description 5
- 229910052760 oxygen Inorganic materials 0.000 claims description 5
- 239000001301 oxygen Substances 0.000 claims description 5
- 239000000084 colloidal system Substances 0.000 claims description 2
- 230000032683 aging Effects 0.000 abstract description 7
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 abstract description 5
- 230000007062 hydrolysis Effects 0.000 abstract description 5
- 238000006460 hydrolysis reaction Methods 0.000 abstract description 5
- 230000015784 hyperosmotic salinity response Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 4
- 239000007864 aqueous solution Substances 0.000 abstract description 2
- 239000004094 surface-active agent Substances 0.000 abstract 3
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 abstract 2
- 239000000693 micelle Substances 0.000 abstract 1
- 238000006116 polymerization reaction Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 13
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 8
- 230000001965 increasing effect Effects 0.000 description 7
- 150000003839 salts Chemical class 0.000 description 7
- 238000007334 copolymerization reaction Methods 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- 230000003301 hydrolyzing effect Effects 0.000 description 5
- GJKGAPPUXSSCFI-UHFFFAOYSA-N 2-Hydroxy-4'-(2-hydroxyethoxy)-2-methylpropiophenone Chemical compound CC(C)(O)C(=O)C1=CC=C(OCCO)C=C1 GJKGAPPUXSSCFI-UHFFFAOYSA-N 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 239000003999 initiator Substances 0.000 description 4
- 238000003786 synthesis reaction Methods 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 150000002148 esters Chemical class 0.000 description 3
- 238000002329 infrared spectrum Methods 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 125000000217 alkyl group Chemical group 0.000 description 2
- 125000003368 amide group Chemical group 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 150000003140 primary amides Chemical group 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- PQUXFUBNSYCQAL-UHFFFAOYSA-N 1-(2,3-difluorophenyl)ethanone Chemical compound CC(=O)C1=CC=CC(F)=C1F PQUXFUBNSYCQAL-UHFFFAOYSA-N 0.000 description 1
- JGSARLDLIJGVTE-UHFFFAOYSA-N 3,3-dimethyl-7-oxo-6-[(2-phenylacetyl)amino]-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid Chemical compound O=C1N2C(C(O)=O)C(C)(C)SC2C1NC(=O)CC1=CC=CC=C1 JGSARLDLIJGVTE-UHFFFAOYSA-N 0.000 description 1
- 229940123973 Oxygen scavenger Drugs 0.000 description 1
- 150000003926 acrylamides Chemical class 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- UHOVQNZJYSORNB-UHFFFAOYSA-N benzene Substances C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 1
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000006392 deoxygenation reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- KETWBQOXTBGBBN-UHFFFAOYSA-N hex-1-enylbenzene Chemical compound CCCCC=CC1=CC=CC=C1 KETWBQOXTBGBBN-UHFFFAOYSA-N 0.000 description 1
- HZVOZRGWRWCICA-UHFFFAOYSA-N methanediyl Chemical compound [CH2] HZVOZRGWRWCICA-UHFFFAOYSA-N 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000010850 salt effect Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229940047670 sodium acrylate Drugs 0.000 description 1
- -1 styrenic Chemical compound 0.000 description 1
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- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
The invention discloses a double-tailed acrylamide hydrophobic associated polymer and a preparation method thereof. The double-tail type acrylamide hydrophobic associated polymer includes three structural units consisting of acrylamide, acrylic acid and N-aryl-n-alkyl(methyl) acrylamide, and is prepared by a micellar polymerization method including the steps of: adding surfactant and double-tailed hydrophobic monomer N-aryl-n-alkyl(methyl) acrylamide in aqueous solution including water-soluble monomers consisting of the acrylamide and the acrylic acid, using the surfactant to solubilize the double-tailed hydrophobic monomers in micelle formed by the surfactant, and copolymerizing the hydrophobic monomers and the water-soluble monomers by photo-initiation. According to the double-tailed acrylamide hydrophobic associated polymer and the preparation method thereof, principle is reliable, operation is convenient, viscosity, salt tolerance and hydrolysis resistance of polymer are greatly improved, and the polymer shows excellent heat resistance, salt tolerance and ageing resistance, thus being high in application value and broad in market prospect.
Description
Technical field
The present invention relates to and a kind ofly drive the double fiber tip acrylamide hydrophobically associating polymkeric substance and preparation method thereof improving recovery ratio for oilfield chemistry.
Background technology
Traditional polymkeric substance, as poor in partially hydrolyzed polyacrylamide (HPAM) temperature tolerance, salt resistance and anti-shear performance, improve the demand of recovery ratio under reservoir condition can not be met.Hydrophobic associated polymer is because of its special solution property: high increasing stickiness, excellent salt resistance and shear resistant, make hydrophobic associated polymer on oil field, show good application prospect.
The performance of hydrophobic associated polymer depends on the Structure and Properties of hydrophobic monomer to a great extent.Structure, the kind of hydrophobic monomer are different, the performance of meeting extreme influence polymkeric substance.Current reported hydrophobic monomer has esters of acrylic acid, styrenic, acrylic amide etc.Polymkeric substance (the Dai Yuhua etc. synthesized by esters of acrylic acid hydrophobic monomer, the synthesis of new hydrophobic association acrylamide/2-benzene oxygen ethylacrylate copolymer and character. polymer journal, 2003,04:525-529) kind is a lot, and have good hydrophobic association effect, but such hydrophobic monomer is extremely responsive to the acid-basicity of high temperature, system, polymkeric substance is easily caused to lose association effect and reduce the viscosity of polymers soln.In the process that flooding polymers uses, the time stopped in reservoir rocks is long, and average period is three months, even reaches half a year, and most of reservoir temperature is higher or depart from neutrality.Thus, esters of acrylic acid hydrophobic associated polymer is at high temperature not suitable as flooding polymers use.Styrenic hydrophobic associated polymer (Zhong Chuanrong etc., the syntheses and properties of associating acrylamide-based copolymer with butyl styrene. fine chemistry industry, 2006, (10) phenyl ring: 1014-1018) in hydrophobic units is near molecular backbone chain, reduce the hydrophobic association effect of polymkeric substance, be unfavorable for that polymers soln increases the raising of glutinous effect.But the existence of phenyl ring can improve temperature tolerance and the resistance to hydrolysis of polymkeric substance.Acrylamide hydrophobically associating polymkeric substance (the Geng confederate etc., twin tail hydrophobic association acrylamide/sodium Acrylate/N, the synthesis and characteries of N-dioctyl acrylamide multipolymer. applied chemistry, 2005,10:76-80) there is the shortcoming of certain hydrolytic resistance difference, but the structure of hydrophobic monomer used and main monomer acrylamide similar, the two easily carries out copolymerization, contributes to the raising of polymer performance.
In order to improve the temperature resistant antisalt effect of polymkeric substance, needing to start with from the structure design of hydrophobic monomer: the phenyl ring introducing rigidity hydrophobic monomer, improving temperature resistance, hydrolytic resistance; Introduce chain alkyl, improve the hydrophobic association effect of polymkeric substance; Adopt the agent structure of acrylic amide, make hydrophobic monomer easily and acrylamide carry out copolymerization; Adopt double-tail structure, improve hydrolytic resistance and the hydrophobic association effect of hydrophobic monomer.Final hydrophobic monomer takes into account the advantage of all kinds of hydrophobic monomer, makes the hydrophobic associated polymer prepared reach the object of heatproof, anti-salt, hydrolysis.
Summary of the invention
The object of the present invention is to provide a kind of double fiber tip acrylamide hydrophobically associating polymkeric substance, due to the existence of phenyl ring in the double-tail structure of hydrophobic monomer and hydrophobic chain, molecular chain rigidity can be significantly improved, improve thermostability and the hydrolytic resistance of hydrophobic monomer, after the water-soluble monomer copolymerization such as acrylamide, the increasing stickiness, salt resistance, hydrolytic resistance etc. of polymkeric substance can be significantly improved, there is very high using value.
Another object of the present invention is the preparation method providing this double fiber tip acrylamide hydrophobically associating polymkeric substance, first double fiber tip hydrophobic monomer (N-aromatic base-N-alkyl (methyl) acrylamide) is mixed in aqueous with the water-soluble monomer such as acrylamide, vinylformic acid, add a certain amount of tensio-active agent, stir to clarify transparent, after logical nitrogen deoxygenation, add initiator, be polymerized under light-initiated condition, prepare double fiber tip acrylamide hydrophobically associating polymkeric substance.The method principle is reliable, easy to operate, has wide market outlook.
In order to reach above-mentioned technical purpose, the present invention by the following technical solutions.
A kind of double fiber tip acrylamide hydrophobically associating polymkeric substance, its structural formula is as follows:
In formula, x, y, z are structural unit number, and x is 80-86%, z is 0.25-0.65%, y=1-x-z; Polymkeric substance viscosity-average molecular weight is 100-400 ten thousand; R
1for-CH
3or H, R
2for-CH
2cH
2-or-CH
2(CH
3)-, n is 7,9,11,13 or 15.
The method of micellar copolymerization is adopted to prepare double fiber tip acrylamide hydrophobically associating polymkeric substance: in the aqueous solution containing the water-soluble monomer such as acrylamide, vinylformic acid, add tensio-active agent (SDS) and double fiber tip hydrophobic monomer N-aromatic base-N-alkyl (methyl) acrylamide (PEMAM), utilize tensio-active agent by double fiber tip hydrophobic monomer solubilising in its micella formed, by light-initiated mode, hydrophobic monomer and water-soluble monomer are carried out copolymerization, obtains double fiber tip acrylamide hydrophobically associating polymkeric substance.Reaction principle is as follows:
In formula, x, y, z are structural unit number, and x is 80-86%, z is 0.25-0.65%, y=1-x-z; Polymkeric substance viscosity-average molecular weight is 100-400 ten thousand; R
1for-CH
3or H, R
2for-CH
2cH
2-or-CH
2(CH
3)-, n is 7,9,11,13 or 15.
The preparation method of above-mentioned a kind of double fiber tip acrylamide hydrophobically associating polymkeric substance, comprises the following steps successively:
(1) in distilled water, add acrylamide (AM), vinylformic acid (AA) stirs, be 6-8 by NaOH adjust ph, add double fiber tip hydrophobic monomer N-aromatic base-N-alkyl (methyl) acrylamide (PEMAM) and sodium lauryl sulphate (SDS) again, be stirred to solution clear.Reaction monomers total mass mark is 25%, wherein acrylamide 20-21.5%, vinylformic acid 3.5-5%, N-aromatic base-N-alkyl (methyl) acrylamide 0.29-0.72%; The massfraction of tensio-active agent (SDS) is 1.0-1.8%;
(2) logical nitrogen 15min is except the dissolved oxygen in anhydrating;
(3) add light trigger, react 3-4h under being placed in light-initiated device, temperature of reaction is 15-30 DEG C, obtains white polymer colloid, is double fiber tip acrylamide hydrophobically associating polymkeric substance.
Described light trigger is 2-hydroxyl-4 '-(2-hydroxy ethoxy)-2-methyl phenyl ketone (Irgacure2959).
The present invention adopts the hydrophobic monomer of acrylamide class formation, compared with existing hydrophobic monomer, has following advantage: with the similar of main monomer acrylamide, easily and the water-soluble monomer such as acrylamide carry out copolymerization; Containing benzene ring structure in the hydrophobic chain of hydrophobic monomer, the hydrolysis of amide group can be suppressed, molecule chain rigidity can be increased simultaneously, improve temperature tolerance; Containing chain alkyl in the hydrophobic chain of hydrophobic monomer, there is good hydrophobic association effect; Hydrophobic monomer is double-tail structure, can suppress the hydrolysis of amide group, and can improve hydrophobic association effect.Therefore, the hydrophobic associated polymer adopting this hydrophobic monomer to synthesize has and increases stickiness, heat and salt resistance preferably.
Described double fiber tip acrylamide hydrophobically associating polymkeric substance is intended being used for the oil-displacing agent as raising oil recovery factor in oil-field development, has broad application prospects.
Accompanying drawing explanation
Fig. 1 is the infrared spectrum of double fiber tip acrylamide hydrophobically associating polymkeric substance.
Fig. 2 is the uv atlas of double fiber tip acrylamide hydrophobically associating polymkeric substance.
Fig. 3 is the viscosity-concentration relationship curve of double fiber tip acrylamide hydrophobically associating polymkeric substance.
Fig. 4 is the viscosity-salinity relation curve of double fiber tip acrylamide hydrophobically associating polymkeric substance.
Fig. 5 is the viscosity-days of ageing relation curve of double fiber tip acrylamide hydrophobically associating polymkeric substance.
Embodiment
The present invention is further illustrated below by drawings and Examples.
One, the preparation of double fiber tip acrylamide hydrophobically associating polymkeric substance
Embodiment 1:
Take 10.25g acrylamide (AM), 2.25g vinylformic acid (AA), adding distil water stirs, and adjust ph is 7; Add 0.27gN-styroyl-N-dodecyl methacrylamide (PEDMAM) and 0.75g sodium lauryl sulphate (SDS), add a certain amount of distilled water, make liquor capacity reach 50mL, be stirred to solution clear; Logical nitrogen 15min, except the dissolved oxygen in anhydrating; Add initiator Irgacure2959, under being placed in light-initiated device, reaction 3h.
Embodiment 2:
Take 10.25g acrylamide (AM), 2.25g vinylformic acid (AA), adding distil water stirs, and adjust ph is 7; Add 0.29gN-styroyl-N-tetradecylmethyl acrylamide (PETMAM) and 0.75g sodium lauryl sulphate (SDS), add a certain amount of distilled water, make liquor capacity reach 50mL, be stirred to solution clear; Logical nitrogen 15min, except the dissolved oxygen in anhydrating; Add initiator Irgacure2959, under being placed in light-initiated device, reaction 3h.
Embodiment 3:
Take 10.25g acrylamide (AM), 2.25g vinylformic acid (AA), adding distil water stirs, and adjust ph is 7; Add 0.16gN-styroyl-N-tetradecylmethyl acrylamide (PETMAM) and 0.75g sodium lauryl sulphate (SDS), add a certain amount of distilled water, make liquor capacity reach 50mL, be stirred to solution clear; Logical nitrogen 15min, except the dissolved oxygen in anhydrating; Add initiator Irgacure2959, under being placed in light-initiated device, reaction 3h.
Two, the structural characterization of double fiber tip acrylamide hydrophobically associating polymkeric substance
1, the infrared spectrum of hydrophobic associated polymer
The infrared spectrum of the hydrophobic associated polymer of Fig. 1 synthesized by embodiment 2.As we can see from the figure: 3472cm
-1, 3408cm
-1place is primary amide N-H stretching vibration absorption peak, 1635cm
-1place is the charateristic avsorption band of carbonyl, 1619cm
-1place is primary amide N-H flexural vibration absorption peak, 1522cm
-1place is the stretching vibration peak of phenyl ring skeleton, 1398cm
-1for the in-plane bending vibration absorption peak of methylene radical, 610cm
-1place is primary amide-NH
2face outside rocking feature peak.
2, the uv atlas of hydrophobic associated polymer
Containing benzene ring structure in hydrophobic monomer of the present invention, thus can verify whether hydrophobic monomer is linked on the molecular backbone chain of polymkeric substance by uv atlas.By the uv atlas of the hydrophobic associated polymer of the 2-in-1 one-tenth of embodiment as shown in Figure 2, wavelength is 235nm place, has occurred the absorption peak of phenyl ring.Accordingly, can judge that hydrophobic monomer successfully accesses in polymer molecular chain.Three, the increasing of double fiber tip acrylamide hydrophobically associating polymkeric substance sticks effect analysis
By the polymkeric substance obtained by embodiment 1, embodiment 2 and embodiment 3, be mixed with the polymers soln of different concns.Be 7.34s in room temperature, velocity of shear
-1condition under, measure the viscosity-concentration curve (as shown in Figure 3) of hydrophobic associated polymer.
As can be seen from Figure 3, in embodiment 2, the increasing of polymkeric substance sticks effect and sticks effective than the increasing of embodiment 1, and the critical association concentration of polymkeric substance (CAC) is low.In embodiment 2, a hydrophobic chain carbon number of hydrophobic monomer (PETMAM) is 14, and the carbon number in embodiment 1 is 12.Carbon number increases, and is conducive to the enhancing of heat resistance and salt tolerance, and the polymkeric substance critical association concentration of thus synthesis in embodiment 2 reduces, and shows and better increases glutinous effect.Can observe: in embodiment 2, to stick effect better than the Efficient Adhesive Promotion of embodiment 3 in the increasing of polymkeric substance simultaneously.Reason is: in embodiment 2, content of hydrophobic monomers is higher, is conducive to the enhancing of heat resistance and salt tolerance.
Four, the salt sensitivity of double fiber tip acrylamide hydrophobically associating polymkeric substance
The research of salt sensitivity is carried out to the sample in embodiment 2.The hydrophobic associated polymer of preparation is mixed with under different salinity the polymers soln of 2000mg/L.Be 7.34s in room temperature, velocity of shear
-1condition under, measure the apparent viscosity of polymers soln with the variation relation (see Fig. 4) of salinity.As can be seen from Figure 4, with the rising of salinity, the trend that after the apparent viscosity of polymkeric substance presents and first reduces, rising reduces again, and the viscosity retention rate of polymers soln can remain on more than 50%, shows good anti-salt effect.
Five, the ageing resistance of double fiber tip acrylamide hydrophobically associating polymkeric substance
Ageing resistance evaluation is carried out to the sample in embodiment 2.Obtained hydrophobic associated polymer is mixed with the polymers soln of 2000mg/L, adds oxygen scavenger, be placed in cillin bottle, sealing.Aging in the baking oven of 80 DEG C, 90 DEG C respectively, the viscosity of results of regular determination polymers soln.
As can be seen from Figure 5, aging about 30 days of polymers soln, viscosity reaches steady.Under identical salinity, contrast the aging conditions of 80 DEG C, 90 DEG C: when 90 DEG C, decline to some extent when the viscosity retention value of polymkeric substance is compared with 80 DEG C.Temperature be 90 DEG C, salinity is 8 × 10
4under the condition of mg/L, the viscosity of polymers soln still can remain on more than 20mPas, shows good heat and salt resistance, resistance to deterioration.
Claims (3)
1. a double fiber tip acrylamide hydrophobically associating polymkeric substance, its structural formula is as follows:
In formula, x, y, z are structural unit number, and x is 80-86%, z is 0.25-0.65%, y=1-x-z; Polymkeric substance viscosity-average molecular weight is 100-400 ten thousand; R
1for-CH
3or H, R
2for-CH
2cH
2-or-CH
2(CH
3)-, n is 7,9,11,13 or 15.
2. the preparation method of double fiber tip acrylamide hydrophobically associating polymkeric substance as claimed in claim 1, comprises the following steps successively:
(1) in distilled water, add acrylamide, vinylformic acid stirs, be 6-8 by NaOH adjust ph, add double fiber tip hydrophobic monomer N-aromatic base-N-alkyl (methyl) acrylamide and sodium lauryl sulphate again, be stirred to solution clear, reaction system monomer total mass mark is 25%, wherein acrylamide 20-21.5%, vinylformic acid 3.5-5%, N-aromatic base-N-alkyl (methyl) acrylamide 0.29-0.72%; Tensio-active agent 1.0-1.8%;
(2) logical nitrogen is except the dissolved oxygen in anhydrating;
(3) add light trigger, react 3-4h under being placed in light-initiated device, temperature of reaction is 15-30 DEG C, obtains white polymer colloid, is double fiber tip acrylamide hydrophobically associating polymkeric substance.
3. the preparation method of double fiber tip acrylamide hydrophobically associating polymkeric substance as claimed in claim 2, it is characterized in that, described light trigger is 2-hydroxyl-4'-(2-hydroxy ethoxy)-2-methyl phenyl ketone.
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| CN107033293A (en) * | 2017-05-16 | 2017-08-11 | 西南石油大学 | A kind of double tail hydrophobic associated polymers with surface-active and preparation method thereof |
| CN107022050A (en) * | 2017-05-16 | 2017-08-08 | 西南石油大学 | A kind of sulphonate betaine type hydrophobic associated polymer and preparation method thereof |
| WO2018209716A1 (en) * | 2017-05-16 | 2018-11-22 | 西南石油大学 | Sulfonate-betaine-type hydrophobic associated polymer and preparation method therefor |
| WO2018209717A1 (en) * | 2017-05-16 | 2018-11-22 | 西南石油大学 | Two-tailed hydrophobically associating polymer having surface activity and preparation method thereof |
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| CN109456740A (en) * | 2018-09-26 | 2019-03-12 | 西安石油大学 | Modified magnetic nano thickening agent of a kind of hydrophobic associated polymer and preparation method thereof |
| CN112920320A (en) * | 2021-01-27 | 2021-06-08 | 天津新翔油气技术有限公司 | Salt-tolerant fracturing drag reducer and preparation method thereof |
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