CN111517486B - Reactive nano poly-silicon/polyaspartic acid polymer scale inhibitor and preparation method thereof - Google Patents
Reactive nano poly-silicon/polyaspartic acid polymer scale inhibitor and preparation method thereof Download PDFInfo
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
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- C02F5/10—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances
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Abstract
The invention provides a reactive nano polysilicon/polyaspartic acid polymer scale inhibitor and a preparation method thereof. A reactive nano polysilicon/polyaspartic acid polymer scale inhibitor comprises, by weight, 1-5 parts of polysuccinimide, 0.01-0.1 part of reactive nano polysilicon RNS-A, 10-120 parts of deionized water, and 240-1400 parts of absolute ethyl alcohol. The scale inhibitor provided by the invention can reduce the generation of calcium sulfate crystals at low concentration, and effectively prevent scales from depositing in a pipeline of an industrial water circulation device so as to meet the industrial use requirement.
Description
Technical Field
The invention belongs to the technical field of industrial circulating cooling water, and particularly relates to a reactive nano polysilicon/polyaspartic acid polymer scale inhibitor and a preparation method thereof.
Background
Fresh water resources are very important to our daily lives, but the resources are very deficient. With the development of industry, the industrial water consumption is continuously increased, the industrial water is recycled, the improvement of the utilization rate of the industrial water is an effective method for saving water, but the industrial water contains a large amount of scale forming ions such as calcium ions and magnesium ions, and the scale layer can be deposited on a pipeline after long-term recycling, so that the heat exchange efficiency is reduced, the equipment safety is damaged, and even explosion can occur.
The addition of the scale inhibitor is an effective method for preventing scale formation. The polyaspartic acid has good biodegradability and no pollution to the environment, contains amido and carboxyl functional groups in the structure, and has good water solubility. The reactive nano-poly-silicon RNS-A has larger specific surface areA, is in A certain aggregation and adhesion state after being dispersed, has more reactive sites, and forms A water-soluble nano-poly-silicon/polyaspartic acid polymer after reacting with polysuccinimide. The polymer is environment-friendly, and the structure contains a large amount of carboxyl groups, so that the polymer can be recycledCa in circulating water2+The ion chelation can inhibit the generation of calcium sulfate scale, the scale inhibition effect is obvious, and the calcium sulfate scale inhibition efficiency can reach 100% under the trace concentration.
Disclosure of Invention
In order to solve the above problems, the present invention provides a reactive nano polysilicon/polyaspartic acid polymer scale inhibitor and a preparation method thereof. The scale inhibitor can reduce the generation of calcium sulfate crystals at low concentration, and effectively prevent scales from depositing in a pipeline of an industrial water circulation device so as to meet the industrial use requirement.
The object of the invention is achieved in the following way: a reactive nano polysilicon/polyaspartic acid polymer scale inhibitor comprises, by weight, 1-5 parts of polysuccinimide, 0.01-0.1 part of reactive nano polysilicon RNS-A, 10-120 parts of deionized water, and 240-1400 parts of absolute ethyl alcohol.
The preparation method of the reactive nano polysilicon/polyaspartic acid polymer scale inhibitor comprises the following steps:
(1) adding reactive nano-poly-silicon RNS-A into A mixed solvent of deionized water and absolute ethyl alcohol for ultrasonic treatment for more than or equal to 5min, and then transferring the mixture into A round-bottom flask;
(2) adding polysuccinimide into a round-bottom flask, uniformly mixing, adjusting the pH of a solution to 5-10, heating to 40-70 ℃, and reacting for 15-30 h;
(3) after the reaction is finished, adding the mixture into absolute ethyl alcohol for precipitation, filtering, and then drying in a constant-temperature drying oven at the temperature of 30-80 ℃ in vacuum to obtain the reactive nano poly-silicon/polyaspartic acid polymer scale inhibitor.
The preparation method of the reactive nano polysilicon/polyaspartic acid polymer scale inhibitor comprises the following steps:
(1) adding 0.03 part of reactive nano-poly-silicon RNS-A into A mixed solvent of 80 parts of absolute ethyl alcohol and 80 parts of deionized water, carrying out ultrasonic treatment for 10 min, and then transferring the mixture into A round-bottom flask;
(2) adding 2 parts of polysuccinimide into a round-bottom flask, uniformly mixing, adjusting the pH value of the solution to 9, heating to 40 ℃, and reacting for 18 hours;
(3) after the reaction is finished, adding the mixture into 800 parts of absolute ethyl alcohol for precipitation, filtering, and then drying in a constant-temperature drying oven at 40 ℃ in vacuum to obtain the reactive nano polysilicon/polyaspartic acid polymer scale inhibitor.
The invention has the following advantages:
the invention uses the reactive nano polysilicon and polysuccinimide as raw materials to prepare the reactive nano polysilicon/polyaspartic acid polymer scale inhibitor with a large number of carboxyl functional groups in the structure. The scale inhibitor contains a large amount of carboxyl groups-COOH, and is easy to ionize in aqueous solution to form-COO-With Ca in the circulating water2+The chelating can reduce the generation of calcium sulfate crystals at low concentration, and effectively prevent scales from depositing in the pipeline of the industrial water circulation device so as to meet the industrial use requirement. The raw materials required by the reaction are simple, the operation is simple and convenient, the synthesis is easy, the obtained polymer scale inhibitor has no pollution to the environment, the calcium sulfate scale inhibition efficiency reaches 100% when the polymer scale inhibitor is in trace concentration, the excellent scale inhibition performance is shown, and the application prospect is wide.
Drawings
FIG. 1 is a nuclear magnetic spectrum of a reactive nano poly-silicon/polyaspartic acid polymer scale inhibitor prepared by the invention;
FIG. 2 is a scanning electron microscope electron energy spectrum of the reactive nano poly-silicon/polyaspartic acid polymer scale inhibitor prepared by the present invention;
FIG. 3 is a Mapping diagram of elemental Si analysis of the reactive nano poly-silicon/polyaspartic acid polymer scale inhibitor prepared by the present invention;
FIG. 4 is a comparison curve of calcium sulfate scale inhibition performance of the reactive nano poly-silicon/polyaspartic acid polymer scale inhibitor prepared by the invention and the polyaspartic acid polymer.
Detailed Description
A reactive nano polysilicon/polyaspartic acid polymer scale inhibitor comprises, by weight, 1-5 parts of polysuccinimide, 0.01-0.1 part of reactive nano polysilicon RNS-A, 10-120 parts of deionized water, and 240-1400 parts of absolute ethyl alcohol.
The preparation method of the reactive nano polysilicon/polyaspartic acid polymer scale inhibitor comprises the following steps:
(1) adding reactive nano-poly-silicon RNS-A into A mixed solvent of deionized water and absolute ethyl alcohol for ultrasonic treatment for more than or equal to 5min, and then transferring the mixture into A round-bottom flask;
(2) adding polysuccinimide into a round-bottom flask, uniformly mixing, adjusting the pH of a solution to 5-10, heating to 40-70 ℃, and reacting for 15-30 h;
(3) after the reaction is finished, adding the mixture into absolute ethyl alcohol for precipitation, filtering, and then drying in a constant-temperature drying oven at the temperature of 30-80 ℃ in vacuum to obtain the reactive nano poly-silicon/polyaspartic acid polymer scale inhibitor.
The reactive nano-poly-silicon RNS-A is provided by Henan Wang House nano-technology, Inc., and is nano-silicon dioxide which is prepared by adopting an in-situ surface modification technology and has reactive amino functional groups on the surface, and the adsorption average pore diameter of the nano-silicon dioxide is 19.2 nm.
The present invention is described in detail below with reference to specific embodiments, it should be noted that the embodiments are only used for further illustration of the present invention, and should not be construed as limiting the scope of the present invention, and those skilled in the art can make modifications and adaptations of the present invention based on the above-mentioned disclosure.
In the following examples, the raw materials were used in parts by weight.
Example 1
A preparation method of a reactive nano poly-silicon/polyaspartic acid polymer scale inhibitor specifically comprises the following steps:
(1) adding 0.03 part of reactive nano-poly-silicon RNS-A into A mixed solvent of 80 parts of absolute ethyl alcohol and 80 parts of deionized water, carrying out ultrasonic treatment for 10 min, and then transferring the mixture into A round-bottom flask;
(2) adding 2 parts of polysuccinimide into a round-bottom flask, uniformly mixing, adjusting the pH value of the solution to 9, heating to 40 ℃, and reacting for 18 hours;
(3) after the reaction is finished, adding the mixture into 800 parts of absolute ethyl alcohol for precipitation, filtering, and then drying in a constant-temperature drying oven at 40 ℃ in vacuum to obtain the reactive nano polysilicon/polyaspartic acid polymer scale inhibitor.
The raw material reactive nano-poly-silicon RNS-A has no scale inhibition performance, but the polyaspartic acid generated by hydrolyzing polysuccinimide has the scale inhibition performance. According to the preparation steps, except that the reactive nano-poly-silicon RNS-A is not added, the polyaspartic acid polymer is synthesized, and the performance of the polyaspartic acid polymer is compared with that of the reactive nano-poly-silicon/polyaspartic acid polymer scale inhibitor.
FIG. 1 is a nuclear magnetic spectrum of a reactive nano poly-silicon/polyaspartic acid polymer scale inhibitor prepared by the present invention, from which the synthesis of the reactive nano poly-silicon/polyaspartic acid polymer can be seen; FIG. 2 is a scanning electron microscope electron energy spectrum of the reactive nano poly-silicon/polyaspartic acid polymer scale inhibitor prepared by the present invention; FIG. 3 is a Mapping diagram of elemental Si analysis of the reactive nano poly-silicon/polyaspartic acid polymer scale inhibitor prepared by the present invention; as can be seen from the figure, the scale inhibitor has the existence of nano polysilicon and is uniformly dispersed in the synthetic material.
Calcium sulfate scale resistance performance test:
determination of CaSO inhibition of water treatment agent by static scale inhibition method4Performance of scale. By using CaCl2And Na2SO4Preparing simulation water to make Ca in the solution2+The concentration is 7100 mg/L, SO4 2-Adding 25 mL of borax buffer solution with the concentration of 6800 mg/L and 0.026 mol/L, performing water bath at 70 ℃ for 6 h in a constant-temperature water bath kettle, cooling to room temperature of 23 ℃, and calibrating Ca in supernate with 0.028 mol/L disodium ethylene diamine tetraacetate standard solution2+The content of (a). The scale inhibition test results of the reactive nano poly-silicon/polyaspartic acid polymer scale inhibitor and polyaspartic acid are shown in figure 4. The borax buffer solution is prepared by dissolving borax in water, and other components such as sodium hydroxide or boric acid are not added additionally.
Fig. 4 is a comparison curve of calcium sulfate scale inhibition performance of the reactive nano poly-silicon/polyaspartic acid polymer scale inhibitor and polyaspartic acid polymer prepared by the invention, wherein curve a is the calcium sulfate scale inhibition performance curve of the polyaspartic acid polymer, and curve B is the calcium sulfate scale inhibition performance curve of the reactive nano poly-silicon/polyaspartic acid polymer scale inhibitor. It can be clearly seen that: the calcium sulfate scale inhibition efficiency of the reactive nano polysilicon/polyaspartic acid polymer scale inhibitor prepared by the invention is obviously higher than that of polyaspartic acid, and the scale inhibitor shows obvious scale inhibition performance when the concentration is lower than 6 mg/L.
Example 2
A preparation method of a reactive nano poly-silicon/polyaspartic acid polymer scale inhibitor specifically comprises the following steps:
(1) adding 0.05 part of reactive nano-poly-silicon RNS-A into A mixed solvent of 80 parts of absolute ethyl alcohol and 100 parts of deionized water, carrying out ultrasonic treatment for 5min, and then transferring the mixture into A round-bottom flask;
(2) adding 4 parts of polysuccinimide into a round-bottom flask, uniformly mixing, adjusting the pH value of the solution to 7, heating to 60 ℃, and reacting for 20 hours;
(3) after the reaction is finished, adding the mixture into 600 parts of absolute ethyl alcohol for precipitation, filtering, and then drying in a constant-temperature drying oven at 80 ℃ in vacuum to obtain the reactive nano poly-silicon/polyaspartic acid polymer scale inhibitor.
The raw material reactive nano-poly-silicon RNS-A has no scale inhibition performance, but the polyaspartic acid generated by hydrolyzing polysuccinimide has the scale inhibition performance. The preparation procedure of example 2 was followed except that no reactive nano-poly-silicon RNS-A was added to synthesize A polyaspartic acid polymer, and the performance of the polymer was compared with that of the reactive nano-poly-silicon/polyaspartic acid polymer scale inhibitor prepared in example 2.
Example 3
A preparation method of a reactive nano poly-silicon/polyaspartic acid polymer scale inhibitor specifically comprises the following steps:
(1) adding 0.01 part of reactive nano-poly-silicon RNS-A into A mixed solvent of 30 parts of absolute ethyl alcohol and 20 parts of deionized water, carrying out ultrasonic treatment for 15 min, and then transferring the mixture into A round-bottom flask;
(2) adding 3 parts of polysuccinimide into a round-bottom flask, uniformly mixing, adjusting the pH value of the solution to 9, heating to 45 ℃, and reacting for 15 hours;
(3) after the reaction is finished, adding the mixture into 700 parts of absolute ethyl alcohol for precipitation, filtering, and then drying in a constant-temperature drying oven at 40 ℃ in vacuum to obtain the reactive nano polysilicon/polyaspartic acid polymer scale inhibitor.
The raw material reactive nano-poly-silicon RNS-A has no scale inhibition performance, but the polyaspartic acid generated by hydrolyzing polysuccinimide has the scale inhibition performance. The preparation procedure of example 3 was followed except that no reactive nano-poly-silicon RNS-A was added to synthesize A polyaspartic acid polymer, and the performance of the polymer was compared with that of the reactive nano-poly-silicon/polyaspartic acid polymer scale inhibitor prepared in example 3.
Example 4
A preparation method of a reactive nano poly-silicon/polyaspartic acid polymer scale inhibitor specifically comprises the following steps:
(1) adding 0.08 part of reactive nano-poly-silicon RNS-A into A mixed solvent of 100 parts of absolute ethyl alcohol and 50 parts of deionized water, carrying out ultrasonic treatment for 20 min, and then transferring the mixture into A round-bottom flask;
(2) adding 3 parts of polysuccinimide into a round-bottom flask, uniformly mixing, adjusting the pH value of the solution to 6, heating to 70 ℃, and reacting for 25 hours;
(3) after the reaction is finished, adding the mixture into 1200 parts of absolute ethyl alcohol for precipitation, filtering, and then drying in a constant-temperature drying oven at 80 ℃ in vacuum to obtain the target product.
The raw material reactive nano-poly-silicon RNS-A has no scale inhibition performance, but the polyaspartic acid generated by hydrolyzing polysuccinimide has the scale inhibition performance. The preparation procedure of example 4 was followed except that no reactive nano-poly-silicon RNS-A was added to synthesize A polyaspartic acid polymer, and the performance of the polymer was compared with that of the reactive nano-poly-silicon/polyaspartic acid polymer scale inhibitor prepared in example 4.
The reactive nano polysilicon/polyaspartic acid polymer scale inhibitor prepared in examples 2 to 4 was also tested for calcium sulfate scale inhibition performance. The test result shows that: the product performance of the examples 2 to 4 is equivalent to that of the scale inhibitor prepared in the example 1, and the scale inhibitor has obvious scale inhibition performance under a lower dosage, and the scale inhibition efficiency is obviously higher than that of a polyaspartic acid polymer, so that the scale inhibitor has a better application prospect.
Embodiments of the present application may also be as follows:
example 5
A preparation method of a reactive nano poly-silicon/polyaspartic acid polymer scale inhibitor comprises the following steps:
(1) adding 0.1 part of reactive nano-poly-silicon RNS-A into A mixed solvent of 40 parts of deionized water and 30 parts of absolute ethyl alcohol for ultrasonic treatment for 5min, and then transferring the mixture into A round-bottom flask;
(2) adding 5 parts of polysuccinimide into a round-bottom flask, uniformly mixing, adjusting the pH value of the solution to 8, heating to 70 ℃, and reacting for 30 hours;
(3) after the reaction is finished, adding the mixture into 1280 parts of absolute ethyl alcohol for precipitation, filtering, and then drying in a constant-temperature drying oven at 80 ℃ in vacuum to obtain the reactive nano polysilicon/polyaspartic acid polymer scale inhibitor.
The reactive nano-poly-silicon RNS-A is provided by Henan Wang House nano-technology, Inc., and is nano-silicon dioxide which is prepared by adopting an in-situ surface modification technology and has reactive amino functional groups on the surface, and the adsorption average pore diameter of the nano-silicon dioxide is 19.2 nm.
Example 6
A preparation method of a reactive nano poly-silicon/polyaspartic acid polymer scale inhibitor comprises the following steps:
(1) adding 0.01 part of reactive nano-poly-silicon RNS-A into A mixed solvent of 10 parts of deionized water and 20 parts of absolute ethyl alcohol for ultrasonic treatment for 30 min, and then transferring the mixture into A round-bottom flask;
(2) adding 1 part of polysuccinimide into a round-bottom flask, uniformly mixing, adjusting the pH value of the solution to 5, heating to 50 ℃, and reacting for 20 hours;
(3) after the reaction is finished, adding the mixture into 220 parts of absolute ethyl alcohol for precipitation, filtering, and then drying in a constant-temperature drying oven at 30 ℃ in vacuum to obtain the reactive nano polysilicon/polyaspartic acid polymer scale inhibitor.
The reactive nano-poly-silicon RNS-A is provided by Henan Wang House nano-technology, Inc., and is nano-silicon dioxide which is prepared by adopting an in-situ surface modification technology and has reactive amino functional groups on the surface, and the adsorption average pore diameter of the nano-silicon dioxide is 19.2 nm.
Example 7
A preparation method of a reactive nano poly-silicon/polyaspartic acid polymer scale inhibitor comprises the following steps:
(1) adding 0.04 part of reactive nano-poly-silicon RNS-A into A mixed solvent of 30 parts of deionized water and 20 parts of absolute ethyl alcohol for ultrasonic treatment for 25 min, and then transferring the mixture into A round-bottom flask;
(2) adding 2.5 parts of polysuccinimide into a round-bottom flask, uniformly mixing, adjusting the pH value of the solution to 6, heating to 50 ℃, and reacting for 22 hours;
(3) after the reaction is finished, adding 400 parts of absolute ethyl alcohol for precipitation, filtering, and then drying in a constant-temperature drying oven at 60 ℃ in vacuum to obtain the reactive nano polysilicon/polyaspartic acid polymer scale inhibitor.
The reactive nano-poly-silicon RNS-A is provided by Henan Wang House nano-technology, Inc., and is nano-silicon dioxide which is prepared by adopting an in-situ surface modification technology and has reactive amino functional groups on the surface, and the adsorption average pore diameter of the nano-silicon dioxide is 19.2 nm.
Example 8
A preparation method of a reactive nano poly-silicon/polyaspartic acid polymer scale inhibitor comprises the following steps:
(1) adding 0.09 part of reactive nano-poly-silicon RNS-A into A mixed solvent of 100 parts of deionized water and 300 parts of absolute ethyl alcohol for ultrasonic treatment for 8 min, and then transferring the mixture into A round-bottom flask;
(2) adding 3 parts of polysuccinimide into a round-bottom flask, uniformly mixing, adjusting the pH value of the solution to 9, heating to 40 ℃, and reacting for 28 hours;
(3) after the reaction is finished, adding 800 parts of absolute ethyl alcohol for precipitation, filtering, and then drying in a constant-temperature drying oven at 40 ℃ in vacuum to obtain the reactive nano polysilicon/polyaspartic acid polymer scale inhibitor.
The reactive nano-poly-silicon RNS-A is provided by Henan Wang House nano-technology, Inc., and is nano-silicon dioxide which is prepared by adopting an in-situ surface modification technology and has reactive amino functional groups on the surface, and the adsorption average pore diameter of the nano-silicon dioxide is 19.2 nm.
Example 9
A preparation method of a reactive nano poly-silicon/polyaspartic acid polymer scale inhibitor comprises the following steps:
(1) adding 0.06 part of reactive nano-poly-silicon RNS-A into A mixed solvent of 60 parts of deionized water and 120 parts of absolute ethyl alcohol for ultrasonic treatment for 18 min, and then transferring the mixture into A round-bottom flask;
(2) adding 4 parts of polysuccinimide into a round-bottom flask, uniformly mixing, adjusting the pH value of the solution to 6, heating to 55 ℃, and reacting for 16 hours;
(3) after the reaction is finished, adding the reaction product into 1000 parts of absolute ethyl alcohol for precipitation, filtering, and then drying in a constant-temperature drying oven at 65 ℃ in vacuum to obtain the reactive nano poly-silicon/polyaspartic acid polymer scale inhibitor.
The reactive nano-poly-silicon RNS-A is provided by Henan Wang House nano-technology, Inc., and is nano-silicon dioxide which is prepared by adopting an in-situ surface modification technology and has reactive amino functional groups on the surface, and the adsorption average pore diameter of the nano-silicon dioxide is 19.2 nm.
Example 10
A preparation method of a reactive nano poly-silicon/polyaspartic acid polymer scale inhibitor comprises the following steps:
(1) adding 0.05 part of reactive nano-poly-silicon RNS-A into A mixed solvent of 110 parts of deionized water and 60 parts of absolute ethyl alcohol for ultrasonic treatment for 28 min, and then transferring the mixture into A round-bottom flask;
(2) adding 2.5 parts of polysuccinimide into a round-bottom flask, uniformly mixing, adjusting the pH value of the solution to 7, heating to 45 ℃, and reacting for 19 hours;
(3) after the reaction is finished, adding the reaction product into 1200 parts of absolute ethyl alcohol for precipitation, filtering, and then drying in a constant-temperature drying oven at 35 ℃ in vacuum to obtain the reactive nano polysilicon/polyaspartic acid polymer scale inhibitor.
The reactive nano-poly-silicon RNS-A is provided by Henan Wang House nano-technology, Inc., and is nano-silicon dioxide which is prepared by adopting an in-situ surface modification technology and has reactive amino functional groups on the surface, and the adsorption average pore diameter of the nano-silicon dioxide is 19.2 nm.
Example 11
A preparation method of a reactive nano poly-silicon/polyaspartic acid polymer scale inhibitor comprises the following steps:
(1) adding 0.07 part of reactive nano-poly-silicon RNS-A into A mixed solvent of 30 parts of deionized water and 90 parts of absolute ethyl alcohol for ultrasonic treatment for 22 min, and then transferring the mixture into A round-bottom flask;
(2) adding 3.8 parts of polysuccinimide into a round-bottom flask, uniformly mixing, adjusting the pH value of the solution to 7, heating to 65 ℃, and reacting for 24 hours;
(3) after the reaction is finished, adding the mixture into 600 parts of absolute ethyl alcohol for precipitation, filtering, and then drying in a constant-temperature drying oven at 55 ℃ in vacuum to obtain the reactive nano poly-silicon/polyaspartic acid polymer scale inhibitor.
The reactive nano-poly-silicon RNS-A is provided by Henan Wang House nano-technology, Inc., and is nano-silicon dioxide which is prepared by adopting an in-situ surface modification technology and has reactive amino functional groups on the surface, and the adsorption average pore diameter of the nano-silicon dioxide is 19.2 nm.
Example 12
A preparation method of a reactive nano poly-silicon/polyaspartic acid polymer scale inhibitor comprises the following steps:
(1) adding 0.03 part of reactive nano-poly-silicon RNS-A into A mixed solvent of 20 parts of deionized water and 20 parts of absolute ethyl alcohol for ultrasonic treatment for 12 min, and then transferring the mixture into A round-bottom flask;
(2) adding 2.8 parts of polysuccinimide into a round-bottom flask, uniformly mixing, adjusting the pH of the solution to 5.8, heating to 68 ℃, and reacting for 23 hours;
(3) after the reaction is finished, adding the mixture into 500 parts of absolute ethyl alcohol for precipitation, filtering, and then drying in a constant-temperature drying oven at 65 ℃ in vacuum to obtain the reactive nano polysilicon/polyaspartic acid polymer scale inhibitor.
The reactive nano-poly-silicon RNS-A is provided by Henan Wang House nano-technology, Inc., and is nano-silicon dioxide which is prepared by adopting an in-situ surface modification technology and has reactive amino functional groups on the surface, and the adsorption average pore diameter of the nano-silicon dioxide is 19.2 nm.
Example 13
A preparation method of a reactive nano poly-silicon/polyaspartic acid polymer scale inhibitor comprises the following steps:
(1) adding 0.08 part of reactive nano-poly-silicon RNS-A into A mixed solvent of 50 parts of deionized water and 50 parts of absolute ethyl alcohol for ultrasonic treatment for 18 min, and then transferring the mixture into A round-bottom flask;
(2) adding 3.5 parts of polysuccinimide into a round-bottom flask, uniformly mixing, adjusting the pH of the solution to 7.5, heating to 50 ℃, and reacting for 28 hours;
(3) after the reaction is finished, adding the mixture into 900 parts of absolute ethyl alcohol for precipitation, filtering, and then drying in a constant-temperature drying oven at 45 ℃ in vacuum to obtain the reactive nano polysilicon/polyaspartic acid polymer scale inhibitor.
The reactive nano-poly-silicon RNS-A is provided by Henan Wang House nano-technology, Inc., and is nano-silicon dioxide which is prepared by adopting an in-situ surface modification technology and has reactive amino functional groups on the surface, and the adsorption average pore diameter of the nano-silicon dioxide is 19.2 nm.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, the present invention is not limited by the foregoing embodiments, and that several changes and modifications can be made without departing from the overall concept of the invention, which should also be construed as the protection scope of the present invention.
Claims (3)
1. A reactive nano poly-silicon/polyaspartic acid polymer scale inhibitor is characterized in that: the preparation method comprises the following steps of (1) taking deionized water and absolute ethyl alcohol as A mixed solvent, and reacting polysuccinimide with reactive nano-poly-silicon RNS-A to obtain the reactive nano-poly-silicon RNS-A; the material comprises, by weight, 1-5 parts of polysuccinimide, 0.01-0.1 part of reactive nano-poly-silicon RNS-A, 10-120 parts of deionized water and 240-1400 parts of absolute ethyl alcohol.
2. The method of preparing a reactive nano poly-silicon/polyaspartic acid polymer scale inhibitor as claimed in claim 1, wherein: the method comprises the following steps:
(1) adding reactive nano-poly-silicon RNS-A into A mixed solvent of deionized water and absolute ethyl alcohol for ultrasonic treatment for more than or equal to 5min, and then transferring the mixture into A round-bottom flask;
(2) adding polysuccinimide into a round-bottom flask, uniformly mixing, adjusting the pH of a solution to 5-10, heating to 40-70 ℃, and reacting for 15-30 h;
(3) after the reaction is finished, adding the mixture into absolute ethyl alcohol for precipitation, filtering, and then drying in a constant-temperature drying oven at the temperature of 30-80 ℃ in vacuum to obtain the reactive nano poly-silicon/polyaspartic acid polymer scale inhibitor.
3. The method of preparing a reactive nano poly-silicon/polyaspartic acid polymer scale inhibitor as claimed in claim 2, wherein: the method comprises the following steps:
(1) adding 0.03 part of reactive nano-poly-silicon RNS-A into A mixed solvent of 80 parts of absolute ethyl alcohol and 80 parts of deionized water, carrying out ultrasonic treatment for 10 min, and then transferring the mixture into A round-bottom flask;
(2) adding 2 parts of polysuccinimide into a round-bottom flask, uniformly mixing, adjusting the pH value of the solution to 9, heating to 40 ℃, and reacting for 18 hours;
(3) after the reaction is finished, adding the mixture into 800 parts of absolute ethyl alcohol for precipitation, filtering, and then drying in a constant-temperature drying oven at 40 ℃ in vacuum to obtain the reactive nano polysilicon/polyaspartic acid polymer scale inhibitor.
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