CN109762102A - A kind of high resistance to mineralized water, low cohesive energy, with polyacrylamide from antibacterial functions and preparation method thereof - Google Patents
A kind of high resistance to mineralized water, low cohesive energy, with polyacrylamide from antibacterial functions and preparation method thereof Download PDFInfo
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Abstract
The invention proposes a kind of high resistance to mineralized waters, low cohesive energy, with the polyacrylamide and preparation method thereof from antibacterial functions, it is by acrylamide, functional monomer, initiator, precipitating reagent, antioxidant, dispersing agent prepares target product by Raolical polymerizable, functional monomer is the double imidazoles acrylamides of N- polyethylene glycol propylene glycol-N- ethyl, the double imidazolmethyl acrylamides of polyethylene glycol propylene glycol-N- ethyl, one or more of double imidazoles of N- vinyl polyethylene glycol propylene glycol-N- ethyl, the resistance to mineralized water of height, low cohesive energy, it is 800~28,000,000 with the polyacrylamide viscosity average molecular weigh from antibacterial functions.The present invention by polyacrylamide main chain introduce polyethylene glycol, imidazole group come improve resistance to mineralized water, lasting stability it is poor, improve degradation difficulty, dispersibility and and environment universality, service efficiency is improved, the surface and interface tension of water can be down to 20-28mN/m.
Description
Technical field
The present invention relates to the fracturing fluid technical field of oil exploitation engineering, in particular to a kind of high resistance to mineralized water, low cohesion
Can, with polyacrylamide from antibacterial functions and preparation method thereof.
Background technique
Pressure break is a kind of engineer operation process of current oil-gas mining, is using Pressure Equipment, under high pressure with spy
The technique for determining the liquid indentation subsurface rock crack of viscosity, this liquid with viscosity used in fracturing technology is exactly to press
Split liquid.Fracturing fluid enters formation rock under high pressure effect, and rock is made to generate rupture and crack occur, and branch is added in fracturing fluid
Support agent material can support the open configuration of subterranean fracture, to form a rock obviously opened after stopping pumping fracturing fluid
Stony fracture seam, improves the permeability of oil-gas Layer, increases flow or yield that oil gas passes through fissure channel.Currently, existing both at home and abroad
Fracturing fluid technology is broadly divided into aqueous fracturing fluid, oil base fracturing fluid, alcohol-base fracturing fluid and foam fracturing fluid.Due to water base pressure
Splitting liquid has many advantages, such as that at low cost, performance is good, is widely used.In recent years, as the demand to the oil gas energy is continuously increased, oil
Gas-field exploitation is developed from shallow-layer to Deep Development from high permeability zone to less permeable layer.The high-temperature oil gas reservoir of hyposmosis requires pressure
Split liquid with high temperature resistant, anti-shearing, low leak-off, broken glue thoroughly and the characteristic good with formation fluid compatibility.
The fracturing fluid of the prior art mainly includes thickening agent, gel breaker, crosslinking agent.The function of thickening agent is tackifying, is led to
It crosses its cross-linking reaction and increases substantially fracturing fluid viscosity, form fracturing fluid gel；Meanwhile it has the function of filtrate reducing, drop frictional resistance
Can, it is the core of fracturing fluid.The thickening agent of the prior art specifically includes that (1) natural plant and its derivative；(2) fine
Tie up plain derivative；(3) the aqueous insoluble polymer synthesized.The natural plant and its derivative of the prior art are from a wealth of sources, application
Technology maturation, still, it residue after breaking gel it is more, easily blocking crack and cause secondary injury.The cellulose heatproof of the prior art
The poor, easily biological-degradable of property, can only be ready-to-use in engineering site, using being restricted.The synthesis polyacrylamide of the prior art, by
Water-based fracturing fluid gelatinizer, but the disadvantage is that shear stability are often used as the advantages that viscosity is high, frictional resistance is small, prop-carrying capacity is strong
Difference, temperature tolerance be poor, pumping when generate significant mechanical and degrade, and shortcomings sensitive with polyvalent metal ion to mineralized water make
The polyacrylamide of the prior art is having the viscosity of polyvalent metal ion saline solution to fall sharply, or even precipitates.The micro- life in underground
Object or bacterium can also cause polyacrylamide to decompose biodegradation of polyacrylamide, and it is even ineffective to reduce using effect.
The shortcomings that in order to overcome the prior art, need to be modified polyacrylamide.The modified polyacrylamide of the prior art can improve
Viscosity reduces interface energy, lowers surface tension, but high temperature is unstable, lasting stability is poor, Yi Gaowen using all generating in underground
Degradation, dispersibility with and environment resistance difference disadvantage.
It, may be by temperature, air, thin since fracturing fluid is at the scene in use, the difference of preparation method and execution conditions
The influence of the conditions such as bacterium, and performance is made to change, especially preparation time and interval time construction time is longer, leads to the problem of
It is more prominent, this make the viscosity of the fracturing fluid of these prior arts be affected by temperature variation it is very big, therefore, applied in some high temperature wells
In working hour, the fracturing fluid that viscous warm nature should be selected good, fracturing fluid property should keep as far as possible stable before construction and in work progress, and press
It splits liquid and enters behind stratum the damage that should then reduce rapidly viscosity and be easy to reduce fracture from stratum discharge.
Polyethylene glycols dispersing agent be non-ionic dispersing agent, be widely used in industry and daily life in, have it is hard water resistance,
The advantages that insensitive to water acid-base property.But additional dispersing agent often acts on poor or is the use of improvement effect large dosage to ring
Cause irremediable pollution in border.If dispersing agent polymerization can be greatly improved dispersion effect in acrylamide molecules chain,
The resistance to hard water ability of polyacrylamide is improved, cohesive energy and surface tension are reduced.Imidazole group has extraordinary bactericidal
Ability, the imidazole group introduced on polyacrylamide strand can inhibit bacterial reproduction, play bactericidal effect, improve polyacrylamide
Amine application effect.
Summary of the invention
The present invention proposes a kind of high resistance to mineralized water, low cohesive energy, with the polyacrylamide from antibacterial functions, existing to solve
There is the outlet capacity of resistance to mineralising of technology poor, cohesive energy is high, and surface and interface tension is high, is easily degraded by microorganisms and what application efficiency was low asks
Topic.
The technical scheme of the present invention is realized as follows:
A kind of high resistance to mineralized water, low cohesive energy, with the polyacrylamide from antibacterial functions, by following parts by weight component
It is prepared by Raolical polymerizable:
The functional monomer is the double imidazoles acrylamides of N- polyethylene glycol propylene glycol-N- ethyl, polyethylene glycol propylene glycol-
One or more of the double imidazolmethyl acrylamides of N- ethyl, the double imidazoles of N- vinyl polyethylene glycol propylene glycol-N- ethyl.It is high
Resistance to mineralized water, low cohesive energy, the viscosity average molecular weigh with the polyacrylamide from antibacterial functions are 800~28,000,000.
Further, the double imidazoles acrylamides of the N- polyethylene glycol propylene glycol-N- ethyl are by N- ethylene glycol propylene glycol-N-
The double imidazoles of ethyl and acryloyl chloride are made by amidation process, reaction equation are as follows:
Double 210 grams of the imidazoles of polyethylene glycol propylene glycol, dry 400 milli of methylene chloride are added in 1000mL three-necked flask
It rises, 138 grams of potassium carbonate, 0 degree is cooled in ice-water bath.200 grams of acryloyl chloride are slowly added dropwise under nitrogen protection, and controls temperature
At 0 degree.It is added dropwise that the reaction was continued 8 hours.
Further, the double imidazolmethyl acrylamides of the polyethylene glycol propylene glycol-N- ethyl are by N- ethylene glycol propylene glycol-
The double imidazoles of N- ethyl and methacrylic chloride are made by amidation process, reaction equation are as follows:
Double 210 grams of the imidazoles of polyethylene glycol propylene glycol, dry 400 milli of methylene chloride are added in 1000mL three-necked flask
It rises, 138 grams of potassium carbonate, 0 degree is cooled in ice-water bath.230 grams of methacrylic chloride are slowly added dropwise under nitrogen protection, and controls
Temperature is at 0 degree.It is added dropwise that the reaction was continued 8 hours.
Reaction solution filtering, and it is concentrated to dryness to obtain 249 grams of thick liquid.Yield 97.1%.
Further, the double imidazoles of the N- vinyl polyethylene glycol propylene glycol-N- ethyl are by N- ethylene glycol propylene glycol-N- second
The double imidazoles of base and dichloroethanes are made by amino-alkylation-dehydrochlorination reaction, and reaction equation is as follows:
Double 210 grams of the imidazoles of polyethylene glycol propylene glycol, dry 400 milli of dichloroethanes are added in 1000mL three-necked flask
It rises, 80 grams of sodium hydroxide, is reacted 18 hours under reaction solution reflux temperature.Reaction solution is down to room temperature, and filtering is concentrated to give thick liquid
220 grams, yield 96.5%.
Further, the double imidazoles of the N- ethylene glycol propylene glycol-N- ethyl are by the bicyclic Ethylene Oxide of polyethylene glycol PEG400
Ether and 2- imidazoles -1- ethamine are made by amino-alkylation reaction, and reaction equation is as follows:
The preparation method of the double imidazoles of N- ethylene glycol propylene glycol-N- ethyl:
500 milliliters of water, 400 grams of the bicyclic Ethylene Oxide ether of polyethylene glycol PEG400,2- miaow are added in 1000mL three-necked flask
The ratio between amount of substance of 222 grams of azoles -1- ethamine, the bicyclic Ethylene Oxide ether of polyethylene glycol PEG400 and 2- imidazoles -1- ethamine is 1:2,
Stirring is started after nitrogen displacement to react 16 hours under reflux.Water is evaporated to thick liquid under vacuum.Obtain clear viscous liquid
420g, yield 100%.
Further, the initiator is azo-initiator, preferably azodiisobutyronitrile, azobisisoheptonitrile, azo
Two NSC 18620 hydrochlorides, two isobutyl imidazoline hydrochloride of azo.The precipitating reagent is the mixture of alcohol or alcohol and water, and precipitating reagent is
Methanol, ethyl alcohol, propyl alcohol, isopropanol, n-butanol, isobutanol, the tert-butyl alcohol, the mixture of tertriary amylo alcohol or the above alcohol and water, the ratio of alcohol
Example 80~100%.The mixture of preferred alcohol, isopropanol, the tert-butyl alcohol or ethyl alcohol, isopropanol, the tert-butyl alcohol and water, the ratio 80 of alcohol
~100%.
Further, the dispersing agent be one or more of this Pan 20,40,60,80 and polysorbate60,80 compounding and
At.
Further, the antioxidant be 4- metoxyphenol, 2,6- di-tert-butyl-4-methy phenols, irgasfos 168,
Antioxidant 1010, one or more of antioxidant 1024.
Polyethylene glycols dispersing agent be non-ionic dispersing agent, be widely used in industry and daily life in, have it is hard water resistance,
The advantages that insensitive to water acid-base property.But additional dispersing agent often acts on poor or is the use of improvement effect large dosage to ring
Cause irremediable pollution in border.If the polymerization of polyethylene glycols dispersing agent is prepared into poly- third in acrylamide molecules chain
Acrylamide can then greatly improve dispersion effect, improve the resistance to hard water ability of polyacrylamide, reduce cohesive energy and surface tension.
Imidazole group has extraordinary bactericidal ability, and it is numerous that the imidazole group introduced on polyacrylamide strand can inhibit bacterium
It grows, plays bactericidal effect, improve polyacrylamide application effect.
Another aspect of the present invention provides a kind of high resistance to mineralized water, low cohesive energy, with the polyacrylamide from antibacterial functions
The preparation method of amine replaces through nitrogen after mixing acrylamide, functional monomer, dispersing agent and antioxidant, is warming up to 80
DEG C~100 DEG C after initiator for reaction is added, room temperature is down to after reaction, precipitating reagent is added, precipitation obtains high resistance to mineralized water, low cohesion
Can, with the polyacrylamide from antibacterial functions.
In a specific embodiment, 2000 milliliters of deionized water are sequentially added in 5000 milliliters of four-hole boiling flasks, third
800 grams of acrylamide, 30 grams of dispersing agent this Pan 80,600 grams of n-amyl alcohol, double 50 grams of acrylamide of the imidazoles of comonomer polyethylene glycol,
0.5 gram of antioxidant.Reaction solution is replaced through nitrogen, is warming up to 80 degree, is added portionwise 15 grams of initiator azodiisobutyronitrile, and keep the temperature
4 hours.Reaction solution is down to room temperature, and 95% ethyl alcohol of precipitating reagent, 2000 milliliters of precipitation whites are slowly added under stirring or off-white color is uniform
Crystal.Through filtering, dry 845 grams of the modified function acrylamide polymer, yield 99% under nitrogen stream.After measured its
Viscosity average molecular weigh is 16,000,000.Nitrogen stream accelerates drying for completely cutting off moisture.
High resistance to mineralized water, low cohesive energy, with the polyacrylamide from antibacterial functions, use the above-mentioned resistance to mineralising of height
Water, low cohesive energy, the preparation method with the polyacrylamide from antibacterial functions are prepared, performance include apparent viscosity,
Surface tension, interfacial tension, antibiotic property, degradation resistance.Measure fracturing fluid property instrument, including with six fast viscosimeters and Haake stream
Become the variation of instrument measurement fracturing fluid viscosity, API filter tester measures the variation of filter loss.
The beneficial effects of the present invention are:
(1) present invention using acrylamide with the function modified monomer that is screened by being introduced in polyacrylamide main chain
Polyethylene glycol, imidazole group come improve resistance to mineralized water, lasting stability it is poor, improve degradation difficulty, dispersibility with and environment it is pervasive
Property, improve service efficiency.
(2) the high resistance to mineralized water of polyacrylamide provided by the invention, low cohesive energy have from antibacterial functions, can be by water
Surface and interface tension is down to 20-28mN/m.
Specific embodiment
Below in conjunction with the embodiment of the present invention, technical scheme in the embodiment of the invention is clearly and completely described,
Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based in the present invention
Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, all
Belong to the scope of protection of the invention.
Embodiment 1
The preparation method of the double imidazoles of N- ethylene glycol propylene glycol-N- ethyl:
500 milliliters of water, 400 grams of the bicyclic Ethylene Oxide ether of polyethylene glycol PEG400,2- miaow are added in 1000mL three-necked flask
222 grams of azoles -1- ethamine starts stirring after nitrogen displacement and reacts 16 hours under reflux.Water is evaporated to thick liquid under vacuum.
Obtain clear viscous liquid 420g, yield 100%.
FD-MS:616,660,704,748,792,836,880
FD-MS is field desorptiion mass spectrum, can be used for characterizing the structure of substance.
Embodiment 2
The preparation method of the double imidazoles of N- ethylene glycol propylene glycol-N- ethyl:
800 milliliters of water, 400 grams of the bicyclic Ethylene Oxide ether of polyethylene glycol-800,2- imidazoles-are added in 2000mL three-necked flask
222 grams of 1- ethamine, stirring is started after nitrogen displacement and is reacted 16 hours under reflux.Water is evaporated to thick liquid under vacuum.?
686 grams of clear viscous liquid.
FD-MS:1408,1452,1496,1540,1584,1628,1672,1716,1760
Embodiment 3
The preparation method of the double imidazoles of N- ethylene glycol propylene glycol-N- ethyl
800 milliliters of water, 400 grams of the bicyclic Ethylene Oxide ether of cetomacrogol 1000,2- miaow are added in 2000mL three-necked flask
190 grams of azoles -1- ethamine starts stirring after nitrogen displacement and reacts 16 hours under reflux.Water is evaporated to thick liquid under vacuum.
Obtain 474 grams of Viscous semi-transparent liquid.
FD-MS:1628,1672,1716,1760,1804,1848,1892,1936,1980
Embodiment 4
The preparation method of the double imidazoles acrylamides of polyethylene glycol propylene glycol-N- ethyl:
Double 210 grams of the imidazoles of polyethylene glycol propylene glycol, dry 400 milli of methylene chloride are added in 1000mL three-necked flask
It rises, 138 grams of potassium carbonate, 0 degree is cooled in ice-water bath.200 grams of acryloyl chloride are slowly added dropwise under nitrogen protection, and controls temperature
At 0 degree.It is added dropwise that the reaction was continued 8 hours.
Reaction solution filtering, and it is concentrated to dryness to obtain 248 grams of thick liquid.Yield 98.3%.
FD-MS:724,768,812,856,900,944,988
Embodiment 5
The preparation method of the double imidazolmethyl acrylamides of polyethylene glycol propylene glycol-N- ethyl:
Double 210 grams of the imidazoles of polyethylene glycol propylene glycol, dry 400 milli of methylene chloride are added in 1000mL three-necked flask
It rises, 138 grams of potassium carbonate, 0 degree is cooled in ice-water bath.230 grams of methacrylic chloride are slowly added dropwise under nitrogen protection, and controls
Temperature is at 0 degree.It is added dropwise that the reaction was continued 8 hours.
Reaction solution filtering, and it is concentrated to dryness to obtain 249 grams of thick liquid.Yield 97.1%.
FD-MS:754,798,842,886,930,974,1018
Embodiment 6
The preparation method of the double imidazoles of N- vinyl polyethylene glycol propylene glycol-N- ethyl:
Double 210 grams of the imidazoles of polyethylene glycol propylene glycol, dry 400 milli of dichloroethanes are added in 1000mL three-necked flask
It rises, 80 grams of sodium hydroxide, is reacted 18 hours under reaction solution reflux temperature.Reaction solution is down to room temperature, and filtering is concentrated to give thick liquid
220 grams, yield 96.5%.
FD-MS:668,712,756,800,844,888,932
Embodiment 7
High resistance to mineralized water, low cohesive energy, the preparation method with the polyacrylamide from antibacterial functions:
In 5000 milliliters of four-hole boiling flasks, 2000 milliliters of deionized water are sequentially added, 800 grams of acrylamide, 30 grams of dispersing agents
This Pan 80,600 grams of n-amyl alcohol, double 50 grams of acrylamide of the imidazoles of comonomer polyethylene glycol propylene glycol-N- ethyl, irgasfos 168
0.5 gram.Reaction solution is replaced through nitrogen, is warming up to 80 degree, is added portionwise 15 grams of initiator azodiisobutyronitrile, and keep the temperature 4 hours.
Reaction solution is down to room temperature, and 95% ethyl alcohol of precipitating reagent, 2000 milliliters of precipitation whites or off-white color uniform crystal are slowly added under stirring.
Through filtering, dry 845 grams of the modified function acrylamide polymer, yield 99% under nitrogen stream.It is viscous equal after measured
Molecular weight is 16,000,000.
Embodiment 8
High resistance to mineralized water, low cohesive energy, the preparation method with the polyacrylamide from antibacterial functions:
In 5000 milliliters of four-hole boiling flasks, 2000 milliliters of deionized water are sequentially added, 800 grams of acrylamide, 20 grams of dispersing agents
80,10 grams of this Pan 20 of this Pan, 600 grams of diluent isoamyl alcohol, the double miaows of comonomer N-vinyl polyethylene glycol propylene glycol-N- ethyl
50 grams of azoles, 0.5 gram of antioxidant 1010.Reaction solution is replaced through nitrogen, is warming up to 80 degree, and the different heptan of initiator azo two is added portionwise
15 grams of nitrile, and keep the temperature 6 hours.Reaction solution is down to room temperature, and it is white that 95% ethyl alcohol of precipitating reagent, 2000 milliliters of precipitations are slowly added under stirring
Color or off-white color uniform crystal.Through filtering, dry 840 grams of the modified function acrylamide polymer, yield under nitrogen stream
It is 98.7%.Its viscosity average molecular weigh is 12,000,000 after measured.
Comparative example
The preparation of unmodified polypropylene amide:
In 5000 milliliters of four-hole boiling flasks, 2000 milliliters of deionized water are sequentially added, 800 grams of acrylamide, 30 grams of dispersing agents
This Pan 80,600 grams of n-amyl alcohol, 0.5 gram of irgasfos 168.Reaction solution is replaced through nitrogen, is warming up to 80 degree, initiator is added portionwise
15 grams of azodiisobutyronitrile, and keep the temperature 4 hours.Reaction solution is down to room temperature, and 95% ethyl alcohol 2000 of precipitating reagent is slowly added under stirring
White or off-white color uniform crystal is precipitated in milliliter.Through filtering, dry the modified function acrylamide polymer under nitrogen stream
790 grams, yield 99%.Its viscosity average molecular weigh is 18,000,000 after measured.
The resistance to mineralized water of height provided by the invention, low cohesive energy, the evaluation method with the polyacrylamide from antibacterial functions
It is as follows with result:
The viscosity determining procedure of polyacrylamide, referring to national standard (GB12005.1-89).
A certain amount of polyacrylamide is taken, at room temperature with the polymer solution of clear water configuration various concentration, test poly- third
The relationship of acrylamide viscosity and concentration evaluates polyacrylamide viscosity performance, and comparative example performance compares.
The anti-mineralized water performance-viscosity retention ratio test method of polyacrylamide
At room temperature, 2500 mg/litres of configuration, 5000 mg/litres, 7500 mg/litres, 10000 mg/litre mineralized waters,
And 0.4% concentration polyacrylamide polymers solution is configured using mineralized water.Configure 0.4% concentration deionized water polyacrylamide
Solution carries out viscosity comparison, and calculates viscosity retention ratio.
Polyacrylamide anti-microbial property test method, referring to national standard (GB15979-1995).
The resistance to mineralized water of height of a certain amount of embodiment 7,8, low cohesive energy are taken at room temperature, with the polyacrylamide from antibacterial functions
Amine, comparative example polyacrylamide add the comparative example polyacrylamide of antibacterial agent myristyl quaternary ammonium salt 1.5%, big with picking up from
It celebrates the mine water of oil field 385 and configures 0.4% strength solution.
Carry out anti-microbial property comparison.
1. polyacrylamide viscosity test results of table:
The resistance to mineralized water test result of 2. polyacrylamide of table
3. polyacrylamide anti-microbial property test result of table
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of high resistance to mineralized water, low cohesive energy, with the polyacrylamide from antibacterial functions, which is characterized in that including following
Parts by weight component:
High resistance to mineralized water, low cohesive energy is prepared by Raolical polymerizable, with gathering from antibacterial functions in said components
Acrylamide, the functional monomer are the double imidazoles acrylamide of N- polyethylene glycol propylene glycol-N- ethyl, polyethylene glycol the third two
One of the double imidazolmethyl acrylamides of alcohol-N- ethyl, the double imidazoles of N- vinyl polyethylene glycol propylene glycol-N- ethyl are several
Kind, the resistance to mineralized water of height, low cohesive energy with the polyacrylamide viscosity average molecular weigh from antibacterial functions are 800~28,000,000.
2. resistance to mineralized water as described in claim 1 high, low cohesive energy, with the polyacrylamide from antibacterial functions, feature
Be, the double imidazoles acrylamides of the N- polyethylene glycol propylene glycol-N- ethyl by the double imidazoles of N- ethylene glycol propylene glycol-N- ethyl and
Acryloyl chloride is made by amidation process, reaction equation are as follows:
3. resistance to mineralized water as described in claim 1 high, low cohesive energy, with the polyacrylamide from antibacterial functions, feature
It is, the double imidazolmethyl acrylamides of the polyethylene glycol propylene glycol-N- ethyl are by the double imidazoles of N- ethylene glycol propylene glycol-N- ethyl
It is made with methacrylic chloride by amidation process, reaction equation are as follows:
4. resistance to mineralized water as described in claim 1 high, low cohesive energy, with the polyacrylamide from antibacterial functions, feature
It is, the double imidazoles of the N- vinyl polyethylene glycol propylene glycol-N- ethyl are by the double imidazoles and two of N- ethylene glycol propylene glycol-N- ethyl
Chloroethanes is made by amino-alkylation-dehydrochlorination reaction, and reaction equation is as follows:
5. the resistance to mineralized water of height, low cohesive energy as described in any one of claim 2~4, with from poly- the third of antibacterial functions
Acrylamide, which is characterized in that the double imidazoles of the N- ethylene glycol propylene glycol-N- ethyl are by the bicyclic Ethylene Oxide of polyethylene glycol PEG400
Ether and 2- imidazoles -1- ethamine are made by amino-alkylation reaction, and reaction equation is as follows:
6. resistance to mineralized water as described in claim 1 high, low cohesive energy, with the polyacrylamide from antibacterial functions, feature
It is, the initiator is azo-initiator, and the precipitating reagent is the mixture of alcohol or alcohol and water.
7. resistance to mineralized water as described in claim 1 high, low cohesive energy, with the polyacrylamide from antibacterial functions, feature
It is, the dispersing agent is that one or more of this Pan 20,40,60,80 and polysorbate60,80 compound.
8. resistance to mineralized water as described in claim 1 high, low cohesive energy, with the polyacrylamide from antibacterial functions, feature
Be, the antioxidant be 4- metoxyphenol, 2,6- di-tert-butyl-4-methy phenols, irgasfos 168, antioxidant 1010, resist
One or more of oxygen agent 1024.
9. the resistance to mineralized water of height described according to claim 1~any one of 8, low cohesive energy, with from the poly- of antibacterial functions
The preparation method of acrylamide, which is characterized in that through nitrogen after mixing acrylamide, functional monomer, dispersing agent and antioxidant
Gas displacement, is added initiator for reaction after being warming up to 80~100 DEG C, room temperature is down to after reaction, precipitating reagent is added, precipitation obtains high resistance to
Mineralized water, low cohesive energy, with the polyacrylamide from antibacterial functions.
10. a kind of high resistance to mineralized water, low cohesive energy, with the polyacrylamide from antibacterial functions, use described in claim 9
The resistance to mineralized water of height, low cohesive energy, the preparation method with the polyacrylamide from antibacterial functions be prepared.
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| CN106986967A (en) * | 2017-04-14 | 2017-07-28 | 浙江理工大学 | A kind of visible light-initiated one-step method prepares the method with double cross-linked network structure sodium alginate composite hydrogels |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112408752A (en) * | 2020-11-19 | 2021-02-26 | 神美科技有限公司 | Sludge conditioner for sewage treatment and preparation method thereof |
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