CN109418261B - Oxidation-reduction potential regulator, preparation method and application thereof - Google Patents
Oxidation-reduction potential regulator, preparation method and application thereof Download PDFInfo
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
- A01N25/22—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests containing ingredients stabilising the active ingredients
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Abstract
The invention discloses an oxidation-reduction potential regulator, a preparation method and application thereof, wherein the oxidation-reduction potential regulator comprises the following components in parts by weight: 10-50 parts of DBNPA, 9.5-90 parts of deionized water and 0.005-0.5 part of xanthan gum; the oxidation-reduction potential regulator of the invention enables the oxidation-reduction potential of the system to reach 100-200mv, so that the added preservative is not damaged by reducing substances, the preservative is kept stable in the system for a long time, and the preservative effect is good.
Description
Technical Field
The invention relates to the technical field of corrosion prevention and sterilization, in particular to an oxidation-reduction potential regulator, and a preparation method and application thereof.
Background
The reducing substance has two sources, namely, the reducing substance is added in the processing process to complete chemical reaction, and when the material is polluted by bacteria, the metabolic action of fungi is generated, and the existence of the reducing substance is favorable for the growth of the bacteria, so that the putrefaction of the material is accelerated. In order to solve the problem of material decay, a common scheme is to add a large amount of preservatives, which inevitably causes blind use of the preservatives, increases the product cost, has unstable effect and cannot meet the expected preservative requirement.
The commonly used preservatives are cason and BIT, both of which contain N-S bonds, when encountering enzymes in bacteria, the N-S bonds are opened and combined with-SH groups in the enzymes, so that the enzymes lose activity, and the bacteria can not reproduce and grow by utilizing the enzymes, thereby achieving the effect of preserving. When a reducing agent is included in the system, the N-S bond can be opened prematurely and the preservative loses its efficacy. Such as: when 200ppm sulfite is contained in emulsion, paint, adhesive, printing ink, painting or detergent, the Kathon or BIT is completely decomposed within 2-3 days, and the emulsion, the coating, the adhesive, the printing ink, the painting or the detergent has no corrosion prevention effect any more.
Some manufacturers add an oxidant into the system to increase the oxidation-reduction potential of the system and then add a preservative, but the effect of the method is not obvious due to the control of the addition amount and the delay of the reductive change of the system.
Disclosure of Invention
In order to solve the problem that the preservative effect is unstable due to the existence of a reducing agent in the prior art, the invention aims to provide an oxidation-reduction potential regulator for stabilizing the preservative in a system; therefore, the invention also provides a preparation method of the regulator.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides an oxidation-reduction potential regulator, which comprises the following components in parts by weight: 10-50 parts of DBNPA, 9.5-90 parts of deionized water and 0.005-0.5 part of xanthan gum.
The oxidation-reduction potential is hereinafter abbreviated as ORP, and the oxidation-reduction potential adjuster is hereinafter abbreviated as ORP adjuster.
DBNPA is known as 2, 2-dibromo-3-nitrilopropionamide.
In a second aspect of the present invention, there is provided a method for preparing the oxidation-reduction potential modifier, comprising the steps of:
s1, weighing 10-50 parts by weight of DBNPA and 9.5-90 parts by weight of deionized water, mixing and grinding;
s2, adding 0.005-0.5 part by weight of xanthan gum into the ground material of S1, uniformly stirring and storing.
Wherein the grinding device in S1 is a grinder.
Wherein the particle size of the S1 after grinding is less than 30 microns.
In a third aspect of the invention, there is provided the use of the above mentioned redox potential modifier for the preparation of a stable preservative product.
Compared with the prior art, the invention has the following beneficial effects: the oxidation-reduction potential regulator is an environment-friendly bactericide, can be quickly decomposed into nontoxic and harmless substances in the sun or soil, has no pollution to rivers and soil, and meets the national environmental protection standard; the oxidation-reduction potential regulator of the invention enables the oxidation-reduction potential of the system to reach 100-200mv, so that the added preservative is not damaged by reducing substances, the preservative is kept stable in the system for a long time, and the preservative effect is good; the oxidation-reduction potential regulator can be compatible with most bactericides, fillers and surfactants, can be used when the pH value is 4-10, and has wide application.
Drawings
The invention is described in further detail below with reference to the following figures and detailed description:
FIG. 1 is a graph showing the effect of the presence or absence of ORP regulator on the residual rate of Kathon in the system;
FIG. 2 is the effect of ORP value in the system as a function of sulfite concentration;
FIG. 3 is the effect of ORP value in the system as a function of ORP regulator concentration.
Detailed Description
Example 1
A preparation method of an oxidation-reduction potential regulator comprises the following steps:
s1, adding 10 kg of DBNPA and 80 kg of deionized water into a pulling cylinder, stirring for 2 minutes, and transferring the stirred material into a grinding machine to grind the material until the particle size is less than 30 microns;
s2, adding 5g xanthan gum into S1, stirring uniformly, and pouring into a storage bucket for storage.
Example 2
A preparation method of an oxidation-reduction potential regulator comprises the following steps:
s1, adding 50 kg of DBNPA and 90 kg of deionized water into the pulling cylinder, stirring for 2 minutes, and transferring the stirred material into a grinding machine to grind the material until the particle size is less than 30 microns;
s2, adding 500g xanthan gum into S1, stirring uniformly, and pouring into a storage bucket for storage.
Example 3
A preparation method of an oxidation-reduction potential regulator comprises the following steps:
s1, adding 30 kg of DBNPA and 9.5 kg of deionized water into the pulling cylinder, stirring for 2 minutes, and transferring the stirred material into a grinding machine to grind the material until the particle size is less than 30 microns;
s2, adding 100g xanthan gum into S1, stirring uniformly, and pouring into a storage bucket for storage.
Example 4
The redox potential modifier prepared in example 1 was used as an example to examine its effect on the stability of cason.
Taking two parts of solution containing 200ppm sulfite, and directly adding 4g of kasong into one part of the solution; the other part was added with 0.1g of the oxidation-reduction potential modifier prepared in example 1 to increase the oxidation-reduction potential of the solution to 100mv, and then 4g of cason was added to examine the remaining rate of cason in the solution with time, and the test results are shown in FIG. 1.
As can be seen from FIG. 1, in the reduction system containing 200ppm of sulfite, the residual amount of the cason to which no oxidation-reduction potential modifier was added was already zero after 3 days; in the system with the addition of the oxidation-reduction potential regulator, the concentration of the cason is basically unchanged after 6 days.
Example 5: the relationship between the concentration of the reducing agent and the oxidation-reduction potential in the system was examined.
Sulfite was added to the solution and the relationship of sulfite concentration to ORP was examined as shown in fig. 2. As can be seen from FIG. 2, when the sulfite concentration is 0, the ORP value of the system is almost close to that of the tap water, the ORP is rapidly reduced along with the increase of the sulfite concentration, and when the sulfite concentration reaches 700ppm, the ORP value of the system is below-150 mv, which shows that the existence of the reducing substance is the root cause of the reduction of the ORP value of the system, and the existence of the reducing substance in the system and the concentration of the reducing substance can be evaluated according to the ORP value.
Example 6: and (4) inspecting the dosage of the oxidation-reduction potential regulator.
The results of adding an oxidation-reduction potential adjuster to the putrefactive emulsion and examining the influence of the amount of the ORP adjuster on the ORP value of the system are shown in fig. 3. As can be seen from FIG. 3, with the increase of the amount of ORP regulator added, the ORP of the system increases rapidly, the reducing capability of the reducing substance is weak, the destruction effect on the preservative is small, when the concentration of the ORP regulator reaches 500ppm, the increase speed of the ORP value is slowed rapidly, and the optimal amount of the ORP regulator is 500ppm in view of comprehensive cost.
Three parts of a traditional water-in-water multicolor paint base paint, a traditional water-in-water multicolor paint protective adhesive, a continuous phase emulsion of the traditional water-in-water multicolor paint and a finished product paint of the traditional water-in-water multicolor paint of the Changxing chemical materials of Quanzhou are taken,respectively A1, B1, C1, A2, B2, C2, A3, B3, C3, A4, B4 and C4, wherein the A1, A2, A3 and A4 are respectively added with the traditional preservative 108 (containing BIT 10%), the traditional preservative 108 is used in an amount of 0.4 percent of the weight of each paint, the B1, B2, B3 and B4 are respectively added with the ORP regulator prepared in the embodiment 2, the ORP regulator is used in an amount of 0.01-1 percent of the weight of each paint, the traditional preservative 108 (containing BIT 10%) is added, the traditional preservative 108 is used in an amount of 0.4 percent of the weight of each paint, and the C1, C2, C3 and C4 are not subjected to any preservative treatment. Get 107Adding 12 parts of bacteria into A1, B1, C1, A2, B2, C2, A3, B3, C3, A4, B4 and C4 respectively, performing ORP value test before adding bacteria, performing first preservation grade test after adding bacteria, and adding 10 parts of bacteria into A1, B1, C1, A2, B2, C2, A3, B3, C3, A4, B4 and C4 respectively7And (3) carrying out a second corrosion prevention grade test on the bacteria, carrying out an ORP value test after the second corrosion prevention grade test, and obtaining test results shown in table 1.
TABLE 1
| Name of item | OPR value before addition of bacteria, mv | First Corrosion test/grade | Second corrosion test/grade | OPR value, mv after two corrosion tests |
| C1 | 52 | 4 | 4 | -10 |
| C2 | 35 | 4 | 4 | 2 |
| C3 | 86 | 4 | 4 | 35 |
| C4 | 46 | 4 | 4 | -5 |
| A1 | 65 | 4 | 4 | -16 |
| A2 | 42 | 4 | 4 | 21 |
| A3 | 69 | 4 | 4 | 30 |
| A4 | 53 | 4 | 4 | -12 |
| B1 | 142 | 0 | 0 | 129 |
| B2 | 135 | 0 | 0 | 123 |
| B3 | 121 | 0 | 0 | 103 |
| B4 | 113 | 0 | 0 | 109 |
The lower the corrosion grade, the better the corrosion resistance of the preservative, the best the corrosion grade 0 and the worst the grade 4. As shown in Table 1, for each paint without the ORP regulator, the grades of the first anticorrosion test and the second anticorrosion test are both 4, which indicates that the antiseptic capability is weak, the paint cannot resist the pollution of a large number of microorganisms, and the sterilization and bacteriostasis capabilities are poor; adding an ORP regulator into a system with bacteria, and then adding a preservative, wherein the grades of the first corrosion prevention test and the second corrosion prevention test are both 0, which shows that the ORP regulator is added into the system to increase the sterilization and bacteriostasis capability of the corrosion prevention system; meanwhile, for a system added with the ORP regulator, the ORP values before and after bacteria addition are stable to be more than 100 mv.
Application case two
Taking three parts of sand-in-water multicolor paint base paint, sand-in-water multicolor paint protective glue, sand-in-water multicolor paint continuous phase emulsion and sand-in-water multicolor paint finished product paint of Fuzhou Hengjia stone building materials Limited company, namely D1, E1, F1, D2, E2, F2, D3, E3, F3, D4, E4 and F4, wherein the D1, D2, D3 and D4 are respectively added with the Hengjia stone preservative 1 (containing 2.5 percent of Kathon), the preservative 1 is 0.4 percent of the weight of each paint, the ORP regulator prepared in example 2 is firstly added in E1, E2, E3 and E4, the ORP regulator is 0.01 to 1 percent of the weight of each paint, and the Hengjia stone preservative 1 (containing 2.5 percent of Kathon) is added, the preservative 1 is 0.4 percent of the weight of each paint, and the ORP regulator F1, F673 and the ORP is not treated with any preservative. Get 107Adding 12 parts of bacteria into D1, E1, F1, D2, E2, F2, D3, E3, F3, D4, E4 and F4 respectively, performing ORP value test before adding bacteria, performing first preservation grade test after adding bacteria, and adding 10 parts of bacteria into D1, E1, F1, D2, E2, F2, D3, E3, F3, D4, E4 and F4 respectively7And (3) performing a second corrosion prevention grade test, and performing an ORP value test after the second corrosion prevention grade test, wherein the test results are shown in Table 2.
TABLE 2
| Name of item | OPR value before addition of bacteria, mv | First Corrosion test/grade | Second corrosion test/grade | OPR value, mv after two corrosion tests |
| F1 | 35 | 4 | 4 | -25 |
| F2 | 26 | 4 | 4 | 3 |
| F3 | 62 | 4 | 4 | 21 |
| F4 | 21 | 4 | 4 | -9 |
| D1 | 10 | 2 | 4 | -1 |
| D2 | 36 | 1 | 4 | 12 |
| D3 | 19 | 1 | 3 | 20 |
| D4 | 21 | 1 | 2 | -8 |
| E1 | 115 | 0 | 0 | 103 |
| E2 | 105 | 0 | 0 | 93 |
| E3 | 101 | 0 | 0 | 90 |
| E4 | 106 | 0 | 0 | 89 |
As shown in table 2, for each paint without preservative, the grades of the first preservative test and the second preservative test are both 4, and the preservative capability of the system is weak; for various paints without the ORP regulator and with the preservative, the grades of the first preservation test and the second preservation test are 1-4, which indicates that the preservative has a certain preservation effect, but the preservation capability is weaker and weaker along with the increase of the number of bacteria; for various paints added with the ORP regulator, the grades of the first anticorrosion test and the second anticorrosion test are both 0, and the anticorrosion capability of the preservative is strong, which indicates that the sterilization and bacteriostasis capabilities of the preservative are increased by adding the ORP; meanwhile, for a system added with the ORP regulator, the ORP values before and after bacteria addition are stabilized at about 100 mv.
The foregoing detailed description is given by way of example only, to better enable one of ordinary skill in the art to understand the patent, and is not to be construed as limiting the scope of what is encompassed by the patent; any equivalent alterations or modifications made according to the spirit of the disclosure of this patent are intended to be included in the scope of this patent.
Claims (5)
1. An oxidation-reduction potential regulator for a preservative in a stabilizing system, which is characterized by comprising the following components in parts by weight: 10-50 parts of DBNPA, 9.5-90 parts of deionized water and 0.005-0.5 part of xanthan gum.
2. A method for preparing an oxidation-reduction potential modifier for stabilizing a preservative in a system, comprising the steps of:
s1, weighing 10-50 parts by weight of DBNPA and 9.5-90 parts by weight of deionized water, mixing and grinding;
s2, adding 0.005-0.5 part by weight of xanthan gum into the ground material of S1, uniformly stirring and storing.
3. The method according to claim 2, wherein the grinding apparatus in S1 is a grinder.
4. The method of claim 2, wherein the size of the milled particles of S1 is less than 30 μm.
5. Use of the redox potential modifier of any one of claims 1-4 in the preparation of a stable preservative product.
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