Synergistic additive for fomesafen sodium salt aqueous solution and preparation process thereof

Abstract

The invention discloses a synergistic auxiliary agent for fomesafen sodium salt aqueous solution and a preparation process thereof, through scientific proportioning of components such as an organic silicon surfactant, an ultraviolet light absorber, an antioxidant, a thickening agent and the like and in combination with the characteristics of fomesafen sodium salt, a formula with a remarkable synergistic effect is formed; wherein titanium dioxide is used as an ultraviolet light absorber and can prolong the drug effect; propyl gallate is used as an antioxidant, so that the oxidation process of the additive is effectively delayed; due to the addition of sodium polyacrylate, not only is the viscosity of the preparation enhanced, but also the water solubility is improved; due to the synergistic effect of the fatty alcohol-polyoxyethylene ether and the organosilicon surfactant, the dispersibility of the preparation is remarkably enhanced; the sodium fluosilicate is used as a synergist and generates a synergistic effect with the fomesafen sodium salt, so that the biological activity of the herbicide is remarkably improved, and the inhibition effect on target weeds is enhanced; and by adding the cross-linked carboxymethyl cellulose, the long-acting property and the drug effect duration of the preparation are further improved.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural adjuvants, and in particular to a synergistic adjuvant for fomesafen sodium salt solution and a preparation process thereof. Background Art

[0002] Fomesulfuron sodium salt is a highly effective selective herbicide widely used in agriculture, mainly for the control of broadleaf weeds. However, the application of fomesulfuron sodium salt faces several technical challenges, especially the stability problem in aqueous preparations. In practical applications, fomesulfuron sodium salt often causes degradation of active ingredients due to photolysis and oxidation, affecting the weed control effect. In addition, the insufficient dispersibility of the preparation and the adhesion of the agent can easily lead to uneven spraying of the pesticide, thus affecting the efficacy and economic benefits. Therefore, in order to improve the effect of fomesulfuron sodium salt solution, the development of synergistic adjuvants is particularly critical.

[0003] At present, most of the synergistic additives on the market are mainly single-function, such as the simple superposition of solubilization, viscosity increase, UV resistance and other functions, which are difficult to provide multi-functional synergistic synergistic effects. In addition, the existing additives lack innovation in the selection of chemical composition and formula, and fail to fully consider the synergistic effect between multiple components, resulting in limited stability and synergistic effect of the preparation, and it is difficult to meet the high efficiency, stability and long-term requirements of the sodium salt solution of flufenacet; moreover, the unreasonable arrangement of the mixing blades of the traditional synergistic additive preparation device leads to the problem of mixing dead corners, which cannot meet the complex mixing requirements of multiple materials; when processing viscous materials, adhesion problems are prone to occur, resulting in uneven mixing, which not only affects the product quality, but also affects the cleanliness and operation efficiency of the equipment, and needs to be improved. Summary of the invention

[0004] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0005] Therefore, in order to solve the above technical problems, the present invention provides the following technical solution: a synergistic auxiliary agent for sodium fluazifop-sodium salt solution, comprising the following components in parts by weight: 5-10 parts of thickener, 1-5 parts of silicone surfactant, 0.5-3 parts of ultraviolet absorber, 0.1-2 parts of antioxidant, 2-6 parts of fatty alcohol polyoxyethylene ether, 0.5-3 parts of synergist, 2-8 parts of cross-linked carboxymethyl cellulose, 10-20 parts of ethanol or isopropanol, and 60-80 parts of deionized water.

[0006] As a preferred embodiment of the synergistic adjuvant for the sodium fluazifop salt solution of the present invention, the ultraviolet absorber is titanium dioxide, which is used to prevent the agent from degrading under ultraviolet irradiation; the antioxidant is propyl gallate, which is used to prevent the adjuvant and the agent components from oxidizing and prolong the shelf life.

[0007] As a preferred embodiment of the synergistic auxiliary agent for the sodium fluosilicate salt solution of fomesafen described in the present invention, the solvent is ethanol or isopropanol, which is used to promote the uniform dissolution and dispersion of different components; the thickener is sodium polyacrylate, which is used to provide excellent thickening effect and water solubility; the synergist is sodium fluosilicate, which is used to produce a synergistic effect with fomesafen, enhance the adsorption and penetration ability of fomesafen, improve its permeability and persistence, and enhance the weed control effect.

[0008] As a preferred embodiment of the synergistic adjuvant for the sodium fluazifop sodium salt solution of the present invention, the synergistic adjuvant is added at a ratio of 5%-10% by weight of the sodium fluazifop sodium salt solution before use, and then the agent is fully stirred to ensure uniform mixing of the adjuvant and the aqueous solution.

[0009] The present invention also provides a preparation process of the above-mentioned synergistic auxiliary agent for fomesafen sodium salt solution. The preparation of the synergistic auxiliary agent for fomesafen sodium salt solution adopts a preparation device, which includes a mixing mechanism, a scraping mechanism and a filtering mechanism; and includes the following specific steps:

[0010] S1: pre-treat the raw materials;

[0011] S11: weigh an appropriate amount of sodium polyacrylate, add it to deionized water at 50° C., and stir to dissolve to form a viscous sodium polyacrylate solution to ensure that the thickener is completely dissolved;

[0012] Start the motor, so that the motor drives the middle shaft to rotate, the middle shaft drives the driving gear to rotate, the middle blade located in the middle of the equipment is driven to rotate through the middle shaft, and the driving gear drives the driven gears on both sides to rotate in linkage, thereby forming a linkage mixing effect of three groups of mixing blades in the reaction device, which can make the materials fully and evenly mixed in the reaction device;

[0013] While mixing the materials, the driven gear is connected to the rack set on the inner wall of the rotating gear ring through meshing transmission, so that it rotates on the reaction device, thereby driving the rotating scraper to rotate closely against the inner wall of the reaction device. The rotating scraper can not only scrape off the materials adhering to the inner wall to prevent the materials from sticking, but also can collect the materials in the reaction device, especially the materials scraped off by the rotating scraper, into the filter material cavity inside the reaction device through the filter material port during the rotation process, and perform preliminary filtration on the materials through the filter material cavity;

[0014] S12: Weighing the organosilicon surfactant and the fatty alcohol polyoxyethylene ether respectively at room temperature and adding them to the solvent, and continuously stirring according to the above mixing steps until the two are completely dissolved and evenly dispersed;

[0015] S13: premixing the antioxidant and the UV absorber and adding them to the thickener solution, and continuously stirring according to the above mixing steps to ensure uniform dispersion;

[0016] S2: blending of core ingredients;

[0017] S21: Preparation of the main solution: slowly pour the stirred sodium polyacrylate solution into the mixed solution of the silicone surfactant and the fatty alcohol polyoxyethylene ether, and keep stirring continuously according to the above mixing steps to ensure the formation of a uniform main solution;

[0018] S22: gradually adding the premixed antioxidant and ultraviolet absorber to the main solution, and maintaining continuous stirring according to the above mixing steps to ensure uniform distribution of the components;

[0019] S23: slowly adding sodium fluorosilicate to the above solution in a dropwise manner, and continuously stirring according to the above mixing steps to ensure that it is fully blended with other ingredients;

[0020] S24: slowly adding powdered cross-linked carboxymethyl cellulose into the main solution through a hopper, spraying the powdered material evenly onto the surface of the mixed solution through a blower, and continuously stirring according to the above mixing steps until the cellulose is completely dissolved and a stable suspension system is formed;

[0021] S3: Add an appropriate amount of deionized water according to the required weight ratio to dilute the builder solution, and keep stirring continuously according to the above mixing steps to ensure that all components are fully mixed and reach the required concentration;

[0022] S4: After all materials are mixed, the micro motor is started, so that the micro motor controls the rotation of the worm, and the worm is connected with the worm wheel through mechanical transmission, so that the sealing plates on multiple filter ports on the filter chamber are driven to rotate from a vertical state to a horizontal state, so as to realize the automatic closing of the filter port, and prevent the impurities filtered out of the filter chamber from being mixed into the mixed materials again when the reaction device is discharged; then, the final auxiliary agent solution is pumped into the filter barrel through the cooperation of the discharge pump and the pipeline, and the auxiliary agent solution is filtered through a stainless steel filter to remove insoluble impurities, so as to ensure the stability and uniformity of the auxiliary agent;

[0023] S5: Put the prepared synergistic additive into a sealed light-proof container, and ensure that there is no air remaining in the container to prevent oxygen in the air from oxidizing the additive;

[0024] Among them, the mixing mechanism includes a reaction device and mixing blades arranged in the reaction device, and the mixing blades are provided in three groups. The three groups of mixing blades are respectively arranged in the middle and both sides of the reaction device, and each group of mixing blades is connected to a group of rotating shafts. The top ends of the two groups of rotating shafts located on both sides are fixedly connected to driven gears, and the top end of the rotating shaft located in the middle is fixedly connected to a motor, and a driving gear is also fixedly connected to the rotating shaft. The driving gear is meshingly connected to a rotating gear ring, and the rotating gear ring is rotatably connected to the reaction device; the scraping mechanism includes a rotating scraper fixedly connected to the rotating gear ring, and the rotating scraper is a mesh structure, and its working end is arranged close to the circumferential inner wall of the reaction device, and is used to scrape off materials adhered to the inner wall of the reaction device.

[0025] As a preferred scheme for the preparation process of the synergistic adjuvant for the sodium fomesafen salt solution of the present invention, wherein: the mixing blades are provided with three groups, the three groups of mixing blades include a middle blade and two groups of side blades, and the two groups of side blades are respectively arranged on both sides of the middle blade.

[0026] As a preferred solution of the preparation process of the synergistic adjuvant for the sodium flufenacet salt solution of the present invention, the middle blade is fixedly connected to the middle rotating shaft, the side blade is fixedly connected to the side rotating shaft, the top end of the side rotating shaft is fixedly connected to the driven gear, the top end of the middle rotating shaft is fixedly connected to the driving gear, the driving gear is meshingly connected to a rotating gear ring, and the rotating gear ring is rotatably connected to the reaction device.

[0027] As a preferred scheme of the preparation process of the synergistic adjuvant for the sodium salt solution of fomesafen described in the present invention, wherein: a feeding pipe and a feeding hopper are arranged at the top of the reaction device, a blower is arranged at the bottom of the feeding hopper, a discharge port is opened at the bottom of the reaction device, the discharge port is connected to a filter barrel through a discharge pump and a pipeline, a 100-mesh stainless steel filter screen is arranged inside the filter barrel, and the feed port of the filter barrel is located above the stainless steel filter screen.

[0028] As a preferred solution of the preparation process of the synergistic auxiliary agent for the sodium fluazifop salt solution of the present invention, the rotating scraper is a hollow structure, the inner cavity of the rotating scraper is provided with a filter material cavity, the front side wall of the filter material cavity is provided with a filter material port, a sealing plate is arranged on the filter material port, the top end of the sealing plate is connected to a control shaft, and the control shaft is connected to a micro motor.

[0029] As a preferred scheme for the preparation process of the synergistic auxiliary agent for the sodium fluazifop salt solution of the present invention, wherein: the filter material port is provided with multiple, and the multiple filter material ports are arranged at equal intervals on the front side of the filter material cavity, each filter material port is arranged with a group of sealing plates, each group of sealing plates is connected to a group of control shafts, and the top of each group of control shafts is connected to a group of worm gears, one side of the worm gear is meshingly connected to a worm, and the multiple groups of worm gears are connected by a connecting shaft, and the connecting shaft is connected to the transmission end of the micro motor.

[0030] Beneficial effects of the present invention:

[0031] 1. The present invention forms a formula with significant synergistic effect by scientifically matching ingredients such as silicone surfactants, ultraviolet absorbers, antioxidants, thickeners, etc., combined with the characteristics of sodium salt of fomesafen. Among them, titanium dioxide as an ultraviolet absorber can effectively reduce the degradation of fomesafen under light and prolong the efficacy; and propyl gallate as an antioxidant can effectively delay the oxidation process of the auxiliary agent and enhance its stability.

[0032] 2. The thickener sodium polyacrylate used in the present invention not only enhances the viscosity of the preparation, but also improves the water solubility, ensuring that the agent can be evenly distributed on the surface of crops and improving the spraying effect. In addition, the synergistic effect of fatty alcohol polyoxyethylene ether and silicone surfactant significantly enhances the dispersibility of the preparation, allowing the agent to better adhere to the surface of weeds and improve the weed control efficiency.

[0033] 3. The present invention adopts sodium fluosilicate as a synergist, which produces a synergistic effect with fomesafen sodium salt, significantly improving the biological activity of the herbicide and enhancing the inhibitory effect on target weeds; at the same time, by adding cross-linked carboxymethyl cellulose, the preparation forms a stable suspension system, further improving the long-term effect and duration of the drug effect of the preparation.

[0034] 4. The preparation device and process steps designed in the present invention further improve the production efficiency and stability of the additive; the preparation device, through the combination of a mixing mechanism, a scraping mechanism and a filtering mechanism, and through the cooperation of multiple groups of mixing blades and rotating scrapers, can simultaneously complete the mixing and scraping operations in the same device, greatly improving the work efficiency, and reducing the space occupied by the equipment, ensuring the full mixing and dispersion of the components, and at the same time removing insoluble impurities through filtering through a stainless steel filter, ensuring the uniformity and stability of the additive. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0036] Figure 1 It is a schematic diagram of the overall structure of the reaction device of the present invention.

[0037] Figure 2 It is a schematic diagram of the overall cross-sectional structure of the present invention.

[0038] Figure 3 It is a partial cross-sectional structural schematic diagram of the reaction device of the present invention.

[0039] Figure 4 It is a schematic diagram of the specific structure of the rotary scraper of the present invention.

[0040] Figure 5 It is a structural schematic diagram of the sealing plate of the rotary scraper of the present invention in an open state.

[0041] Figure 6 It is a partial enlarged structural schematic diagram of the rotary scraper of the present invention.

[0042] In the figure: 100, mixing mechanism; 101, reaction device; 102, mixing blade; 1021, middle blade; 1022, side blade; 103, driven gear; 104, driving gear; 105, rotating gear ring; 106, motor; 107, feeding pipe; 108, feeding hopper; 109, blower; 110, discharge pump;

[0043] 200, scraping mechanism; 201, rotating scraper; 202, filter chamber; 203, sealing plate; 204, worm gear; 205, worm; 206, micro motor;

[0044] 300, filter barrel; 301, stainless steel filter. DETAILED DESCRIPTION

[0045] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0046] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0047] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0048] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0049] Reference Figures 1 to 6 , is an embodiment of the present invention, and provides a synergistic auxiliary agent for sodium fomesafen salt solution, comprising the following components in parts by weight: 5-10 parts of thickener, 1-5 parts of silicone surfactant, 0.5-3 parts of ultraviolet absorber, 0.1-2 parts of antioxidant, 2-6 parts of fatty alcohol polyoxyethylene ether, 0.5-3 parts of synergist, 2-8 parts of cross-linked carboxymethyl cellulose, 10-20 parts of ethanol or isopropanol, and 60-80 parts of deionized water.

[0050] The invention forms a formula with significant synergistic effect by scientifically matching components such as an organic silicon surfactant, an ultraviolet absorber, an antioxidant, a thickener, etc., in combination with the characteristics of sodium salt of flufenacet. Titanium dioxide, as an ultraviolet absorber, can effectively reduce the degradation of flufenacet under light and prolong the efficacy. Propyl gallate, as an antioxidant, can effectively delay the oxidation process of the auxiliary agent and enhance its stability. The thickener sodium polyacrylate used in the invention not only enhances the viscosity of the preparation, but also improves the water solubility, thereby ensuring that the agent can be evenly distributed on the surface of crops and improving the spraying effect. In addition, the synergistic effect of fatty alcohol polyoxyethylene ether and silicone surfactant significantly enhances the dispersibility of the preparation, so that the agent can better adhere to the surface of weeds, thereby improving the weed control efficiency; the present invention adopts sodium fluosilicate as a synergist, which produces a synergistic effect with fomesafen sodium salt, significantly improves the biological activity of the herbicide, and enhances the inhibitory effect on target weeds; at the same time, through the addition of cross-linked carboxymethyl cellulose, the preparation forms a stable suspension system, further improving the long-term effect and duration of the drug effect of the preparation.

[0051] The preparation of the synergistic adjuvant for the sodium salt solution of fomesafen adopts a preparation device, which includes a mixing mechanism 100, a scraping mechanism 200 and a filtering mechanism 300; wherein the mixing mechanism 100 includes a reaction device 101 and mixing blades 102 arranged in the reaction device 101, the mixing blades 102 are provided with three groups, and the three groups of mixing blades 102 are respectively arranged in the middle and both sides of the reaction device 101, each group of mixing blades 102 is connected to a group of rotating shafts, the top ends of the two groups of rotating shafts located on both sides are fixedly connected with a driven gear 103, the top end of the rotating shaft located in the middle is fixedly connected with a motor 106, and the rotating shaft is also fixedly connected with a driving gear 104, the driving gear 104 is meshed and transmission-connected with a rotating gear ring 105, and the rotating gear ring 105 is rotatably connected to the reaction device 101; the mixing blades 102 are provided with three groups, and the three groups of mixing blades 102 include middle blades 1021 and two groups of side blades 1022, the two groups of side blades 1022 are respectively arranged on both sides of the middle blade 1021; the middle blade 1021 is fixedly connected to the middle rotating shaft, the side blades 1022 are fixedly connected to the side rotating shaft, the top of the side rotating shaft is fixedly connected to the driven gear 103, the top of the middle rotating shaft is fixedly connected to the driving gear 104, the driving gear 104 is meshed and connected to the rotating gear ring 105, and the rotating gear ring 105 is rotatably connected to the reaction device 101; the top of the reaction device 101 is arranged with a feeding pipe 107 and a feeding hopper 108, the bottom of the feeding hopper 108 is arranged with a blower 109, the bottom of the reaction device 101 is provided with a discharge port, the discharge port is connected to a filter barrel 300 through a discharge pump 110 and a pipeline, the interior of the filter barrel 300 is arranged with a 100-mesh stainless steel filter screen 301, and the feed port of the filter barrel 300 is located above the stainless steel filter screen 301;

[0052] The scraper mechanism 200 includes a rotating scraper 201 fixedly connected to the rotating gear ring 105. The rotating scraper 201 is a mesh structure, and its working end is arranged close to the circumferential inner wall of the reaction device 101, and is used to scrape off the materials adhering to the inner wall of the reaction device 101; the rotating scraper 201 is a hollow structure, and the inner cavity of the rotating scraper 201 is provided with a filter cavity 202, and the front side wall of the filter cavity 202 is provided with a filter port, and a sealing plate 203 is arranged on the filter port, and the top of the sealing plate 203 is connected to a control The control shaft is connected to a micro motor 206; there are multiple filter material ports, which are evenly spaced on the front side of the filter material cavity 202; each filter material port is provided with a group of sealing plates 203, each group of sealing plates 203 is connected to a group of control shafts, and the top of each group of control shafts is connected to a group of worm gears 204, one side of the worm gear 204 is meshingly connected to a worm 205, and the multiple groups of worm gears 205 are connected by a connecting shaft, and the connecting shaft is connected to the transmission end of the micro motor 206.

[0053] The present invention provides three groups of mixing blades 102 to make the mixing process more uniform and efficient. The blades in the middle and on both sides are linked by the driving gear 104 and the driven gear 103 respectively, so that the materials can be fully mixed in the reaction device 101, and the problem of mixing dead angles caused by unreasonable blade arrangement in traditional devices is avoided; secondly, the scraping mechanism 200 of the present invention adopts a rotating scraper 201, and the working end of the scraper is close to the inner wall of the reaction device 101, which can effectively prevent the material from adhering to the inner wall of the equipment, ensuring the continuity and stability of the mixing process. At the same time, a filter cavity 202 is provided inside the rotating scraper 201, and multiple filter ports and sealing plates 203 are provided. The linkage of the worm wheel 204 and the worm 205 is controlled by a micro motor 206 to realize automatic filter control; this design not only improves the automation of the equipment, but also effectively avoids secondary contamination of the material during the filtration process.

[0054] The preparation process of the synergistic adjuvant for fomesafen sodium salt solution prepared by the above-mentioned preparation device comprises the following specific steps:

[0055] S1: pre-treat the raw materials;

[0056] S11: weigh an appropriate amount of sodium polyacrylate, add it to deionized water at 50° C., and stir to dissolve to form a viscous sodium polyacrylate solution to ensure that the thickener is completely dissolved;

[0057] The motor 106 is started, so that the motor 106 drives the middle shaft to rotate, the middle shaft drives the driving gear 104 to rotate, the middle blade 1021 located in the middle of the equipment is driven to rotate through the middle shaft, and the driving gear 104 drives the driven gears 103 on both sides to rotate in linkage, thereby forming a linkage mixing effect of the three groups of mixing blades 102 in the reaction device 101, which can make the materials fully and evenly mixed in the reaction device 101;

[0058] While mixing, the driven gear 103 is connected to the rack group on the inner wall of the circumference of the rotating gear ring 105 through meshing transmission, so that it rotates on the reaction device 101, thereby driving the rotating scraper 201 to rotate close to the inner wall of the reaction device 101. The rotating scraper 201 can not only scrape off the materials adhering to the inner wall to prevent the materials from sticking, but also can collect the materials in the reaction device 101, especially the materials scraped off by the rotating scraper 201, through the filter material port into the filter material cavity 202 inside the reaction device 101 during the rotation process, and preliminarily filter the materials through the filter material cavity 202;

[0059] S12: Weighing the organosilicon surfactant and the fatty alcohol polyoxyethylene ether respectively at room temperature and adding them to the solvent, and continuously stirring according to the above mixing steps until the two are completely dissolved and evenly dispersed;

[0060] S13: premixing the antioxidant and the UV absorber and adding them to the thickener solution, and continuously stirring according to the above mixing steps to ensure uniform dispersion;

[0061] S2: blending of core ingredients;

[0062] S21: Preparation of the main solution: slowly pour the stirred sodium polyacrylate solution into the mixed solution of the silicone surfactant and the fatty alcohol polyoxyethylene ether, and keep stirring continuously according to the above mixing steps to ensure the formation of a uniform main solution;

[0063] S22: gradually adding the premixed antioxidant and ultraviolet absorber to the main solution, and maintaining continuous stirring according to the above mixing steps to ensure uniform distribution of the components;

[0064] S23: slowly adding sodium fluorosilicate to the above solution in a dropwise manner, and continuously stirring according to the above mixing steps to ensure that it is fully blended with other ingredients;

[0065] S24: slowly adding powdered cross-linked carboxymethyl cellulose into the main solution through the hopper 108, spraying the powdered material evenly onto the surface of the mixed solution through the blower 109, and continuously stirring according to the above mixing steps until the cellulose is completely dissolved and a stable suspension system is formed;

[0066] S3: Add an appropriate amount of deionized water according to the required weight ratio to dilute the builder solution, and keep stirring continuously according to the above mixing steps to ensure that all components are fully mixed and reach the required concentration;

[0067] S4: After all materials are mixed, the micro motor 206 is started, so that the micro motor 206 controls the rotation of the worm 205. The worm 205 is connected to the worm wheel 204 through mechanical transmission, so that the sealing plates 203 on the multiple filter ports on the filter chamber 202 are driven to rotate from a vertical state to a horizontal state, so as to realize the automatic closing of the filter ports, and prevent the impurities filtered out of the filter chamber 202 from being mixed into the mixed materials again when the reaction device 101 discharges the materials; and then the final auxiliary agent solution is pumped into the filter barrel 300 through the cooperation of the discharge pump 110 and the pipeline, and the auxiliary agent solution is filtered through the stainless steel filter screen 301 to remove insoluble impurities, so as to ensure the stability and uniformity of the auxiliary agent;

[0068] S5: Put the prepared synergistic additive into a sealed light-proof container, and ensure that there is no air remaining in the container to prevent oxygen in the air from oxidizing the additive;

[0069] S6: adding the synergistic adjuvant in a ratio of 5% to 10% of the weight of the fomesafen sodium salt solution, and then fully stirring the agent to ensure uniform mixing of the adjuvant and the fomesafen sodium salt solution;

[0070] S7: In the mixed solution, the synergist fully reacts with the sodium salt of fomesafen; during this process, the organosilicon surfactant in the synergist forms a weak bond with the sodium salt of fomesafen, which reduces the surface tension, increases the wettability and permeability of the agent, and thus enhances its distribution on the plant surface;

[0071] S8: After the above reaction is completed, the solution is continuously stirred at a low speed to keep the fine particles in the reaction solution in a uniform suspension state, thereby ensuring the stability of the additive and uniform distribution of the efficacy;

[0072] S9: Use an online pH detector to test the pH of the solution to ensure that the pH value of the mixed solution is maintained between 7 and 8 to avoid excessively high or low pH values ​​that may affect the chemical stability of fomesafen sodium salt and its herbicidal effect; if the pH value deviates from the target range, adjust it by adding an appropriate amount of dilute acid or alkali;

[0073] S10: The absorption spectrum of fomesafen sodium salt is detected by UV-visible spectrophotometer to ensure that the addition of the synergistic adjuvant does not cause its photodegradation; if it is detected that the adjuvant has a significant UV shielding effect, it can be further confirmed that it has a synergistic effect on the stability of fomesafen sodium salt;

[0074] S11: After the reaction solution is left to stand for 24 hours, the physical stability of the solution is tested, such as stratification, precipitation and the like; the particle size distribution in the mixed solution is tested by a dynamic light scattering instrument to ensure good uniformity of the adjuvant and fomesafen sodium salt;

[0075] S12: Concentrate the mixture by pressure spray drying to further remove the solvent to prepare the final fomesafen sodium salt synergist aqueous solution product, and then package the prepared synergistic fomesafen sodium salt aqueous solution according to the standard packaging process.

[0076] In the preparation process of the adjuvant, the thickener, surfactant, antioxidant, ultraviolet absorber and other ingredients are first processed and mixed in steps. The thickener solution is formed by dissolving sodium polyacrylate to ensure that it can provide an ideal thickening effect. At the same time, the addition of surfactants and fatty alcohol polyoxyethylene ether improves the dispersibility of the agent. Then, the addition of antioxidants and ultraviolet absorbers further improves the anti-degradation performance of the agent. Sodium fluosilicate, as a synergist, forms a synergistic effect with fomesafen sodium salt, enhancing the herbicidal effect of the agent. Through scientific and reasonable process design, efficient production and quality control of synergistic adjuvants are achieved.

[0077] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A synergistic aid for fomesafen sodium salt solution, characterized in that: The invention comprises the following components in parts by weight: 5-10 parts of thickener, 1-5 parts of silicone surfactant, 0.5-3 parts of ultraviolet absorber, 0.1-2 parts of antioxidant, 2-6 parts of fatty alcohol polyoxyethylene ether, 0.5-3 parts of synergist, 2-8 parts of cross-linked carboxymethyl cellulose, 10-20 parts of ethanol or isopropanol and 60-80 parts of deionized water.

2. The synergistic aid for fomesafen sodium salt solution according to claim 1, characterized in that: The ultraviolet absorber is titanium dioxide, which is used to prevent the medicine from degrading under ultraviolet radiation; the antioxidant is propyl gallate, which is used to prevent the auxiliary agent and the medicine components from oxidizing and prolong the validity period.

3. The synergistic aid for fomesafen sodium salt solution according to claim 2, characterized in that: The solvent is ethanol or isopropanol, which is used to promote the uniform dissolution and dispersion of different components; the thickener is sodium polyacrylate, which is used to provide excellent thickening effect and water solubility; the synergist is sodium fluosilicate, which is used to produce a synergistic effect with fomesafen, enhance the adsorption and penetration ability of fomesafen, improve its permeability and persistence, and enhance the weed control effect.

4. The synergistic aid for fomesafen sodium salt solution according to claim 3, characterized in that: The synergistic auxiliary agent is added in a proportion of 5% to 10% of the weight of the fomesafen sodium salt solution before use, and then the agent is fully stirred to ensure uniform mixing of the auxiliary agent and the water solution.

5. The preparation process of the synergistic aid for fomesafen sodium salt solution according to claim 4, characterized in that: The preparation of the synergistic auxiliary agent for fomesafen sodium salt solution adopts a preparation device, which comprises a mixing mechanism (100), a scraping mechanism (200) and a filtering mechanism (300); The specific steps include: S1: pre-treat the raw materials; S11: weigh an appropriate amount of sodium polyacrylate, add it to deionized water at 50° C., and stir to dissolve to form a viscous sodium polyacrylate solution to ensure that the thickener is completely dissolved; The motor (106) is started, so that the motor (106) drives the middle rotating shaft to rotate, the middle rotating shaft drives the driving gear (104) to rotate, the middle blade (1021) located in the middle of the device is driven to rotate by the middle rotating shaft, and the driving gear (104) drives the driven gears (103) on both sides to rotate in conjunction, thereby forming a linkage mixing effect of the three groups of mixing blades (102) in the reaction device (101), so that the materials can be fully and evenly mixed in the reaction device (101); While the materials are being mixed, the driven gear (103) is connected to the rack group on the inner wall of the circumference of the rotating gear ring (105) through meshing transmission, so that it rotates on the reaction device (101), thereby driving the rotating scraper (201) to rotate closely against the inner wall of the reaction device (101). The rotating scraper (201) can not only scrape off the materials adhering to the inner wall to prevent the materials from sticking, but also can collect the materials in the reaction device (101), especially the materials scraped off by the rotating scraper (201), through the filter material port into the filter material cavity (202) inside the reaction device (101), and perform preliminary filtration on the materials through the filter material cavity (202); S12: Weighing the organosilicon surfactant and the fatty alcohol polyoxyethylene ether respectively at room temperature and adding them to the solvent, and continuously stirring according to the above mixing steps until the two are completely dissolved and evenly dispersed; S13: premixing the antioxidant and the UV absorber and adding them to the thickener solution, and continuously stirring according to the above mixing steps to ensure uniform dispersion; S2: blending of core ingredients; S21: Preparation of the main solution: slowly pour the stirred sodium polyacrylate solution into the mixed solution of the silicone surfactant and the fatty alcohol polyoxyethylene ether, and keep stirring continuously according to the above mixing steps to ensure the formation of a uniform main solution; S22: gradually adding the premixed antioxidant and ultraviolet absorber to the main solution, and maintaining continuous stirring according to the above mixing steps to ensure uniform distribution of the components; S23: slowly adding sodium fluorosilicate to the above solution in a dropwise manner, and continuously stirring according to the above mixing steps to ensure that it is fully blended with other ingredients; S24: slowly adding powdered cross-linked carboxymethyl cellulose into the main solution through the hopper (108), spraying the powdered material evenly onto the surface of the mixed solution through the blower (109), and maintaining continuous stirring according to the above mixing steps until the cellulose is completely dissolved and a stable suspension system is formed; S3: Add an appropriate amount of deionized water according to the required weight ratio to dilute the builder solution, and keep stirring continuously according to the above mixing steps to ensure that all components are fully mixed and reach the required concentration; S4: After all materials have been mixed, the micro motor (206) is started, so that the micro motor (206) controls the worm (205) to rotate, and the worm (205) is connected to the worm wheel (204) through mechanical transmission, so that the sealing plates (203) on the multiple filter ports on the filter chamber (202) are driven to rotate from a vertical state to a horizontal state, so that the filter ports are automatically closed, so as to prevent the impurities filtered out of the filter chamber (202) from being mixed into the mixed materials again when the reaction device (101) discharges the materials; and then the final auxiliary agent solution is pumped into the filter barrel (300) through the cooperation of the discharge pump (110) and the pipeline, and the auxiliary agent solution is filtered through the stainless steel filter screen (301) to remove insoluble impurities, so as to ensure the stability and uniformity of the auxiliary agent; S5: Put the prepared synergistic additive into a sealed light-proof container, and ensure that there is no air remaining in the container to prevent oxygen in the air from oxidizing the additive; The mixing mechanism (100) comprises a reaction device (101) and mixing blades (102) arranged in the reaction device (101), wherein the mixing blades (102) are provided in three groups, and the three groups of mixing blades (102) are arranged in the middle and on both sides of the reaction device (101), respectively, and each group of mixing blades (102) is connected to a group of rotating shafts, and the top ends of the two groups of rotating shafts located on both sides are fixedly connected to driven gears (103), and the top end of the rotating shaft located in the middle is fixedly connected to a motor (106). , and a driving gear (104) is fixedly connected to the rotating shaft, the driving gear (104) is meshingly connected to a rotating gear ring (105), and the rotating gear ring (105) is rotatably connected to the reaction device (101); the scraping mechanism (200) comprises a rotating scraper (201) fixedly connected to the rotating gear ring (105), the rotating scraper (201) is a mesh structure, and its working end is arranged close to the circumferential inner wall of the reaction device (101), and is used to scrape off materials adhered to the inner wall of the reaction device (101).

6. The preparation process of the synergistic aid for fomesafen sodium salt solution according to claim 5, characterized in that: The mixing blades (102) are provided in three groups, and the three groups of mixing blades (102) include a middle blade (1021) and two groups of side blades (1022), and the two groups of side blades (1022) are respectively arranged on both sides of the middle blade (1021).

7. The process for preparing the synergistic aid for fomesafen sodium salt solution according to claim 6, characterized in that: The middle blade (1021) is fixedly connected to the middle rotating shaft, the side blade (1022) is fixedly connected to the side rotating shaft, the top end of the side rotating shaft is fixedly connected to the driven gear (103), the top end of the middle rotating shaft is fixedly connected to the driving gear (104), the driving gear (104) is meshingly connected to the rotating gear ring (105), and the rotating gear ring (105) is rotationally connected to the reaction device (101).

8. The process for preparing the synergistic aid for fomesafen sodium salt solution according to claim 7, characterized in that: A feeding pipe (107) and a feeding hopper (108) are arranged at the top of the reaction device (101), a blower (109) is arranged at the bottom of the feeding hopper (108), a discharge port is opened at the bottom of the reaction device (101), and the discharge port is connected to a filter barrel (300) through a discharge pump (110) and a pipeline, a 100-mesh stainless steel filter screen (301) is arranged inside the filter barrel (300), and a feed port of the filter barrel (300) is located above the stainless steel filter screen (301).

9. The process for preparing the synergistic aid for fomesafen sodium salt solution according to claim 8, characterized in that: The rotating scraper (201) is a hollow structure. The inner cavity of the rotating scraper (201) is provided with a filter material cavity (202). The front side wall of the filter material cavity (202) is provided with a filter material opening. A sealing plate (203) is arranged on the filter material opening. The top end of the sealing plate (203) is connected to a control shaft, and the control shaft is connected to a micro motor (206).

10. The process for preparing the synergistic aid for fomesafen sodium salt solution according to claim 9, characterized in that: The filter material ports are provided with a plurality of filter material ports, which are arranged at equal intervals on the front side of the filter material cavity (202); a group of sealing plates (203) are arranged on each filter material port; each group of sealing plates (203) is connected to a group of control shafts; the top end of each group of control shafts is connected to a group of worm gears (204); one side of the worm gear (204) is meshingly connected to a worm (205); the plurality of groups of worm gears (205) are connected via a connecting shaft, and the connecting shaft is connected to the transmission end of a micro motor (206).

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