阅读说明：本技术 一种草甘膦颗粒剂专用助剂的制备研究方法 (Preparation research method of special auxiliary agent for glyphosate granules ) 是由 何华雄 于 2019-08-19 设计创作，主要内容包括：本发明公开了一种草甘膦颗粒剂专用助剂的制备研究方法,涉及农药技术领域,通过将甜菜碱、糖苷、脂肪醇聚氧乙烯醚、聚羧酸盐复配,制备出高效、复合型的多功能助剂配方,此类非牛脂胺助剂的制备,极大地弥补了其他类型助剂在毒性高、表面活性低、作用效果明显等方面的缺陷。所述助剂组成包括甜菜碱、糖苷、脂肪醇聚氧乙烯醚、羧酸酸盐组成,上述原料的质量比组成为甜菜碱20～30份、糖苷20～30份、脂肪醇聚氧乙烯醚40～60份、聚乙烯醇5～8份、聚羧酸盐类5～15份、聚乙烯吡咯烷酮5～15份,有机硅抗泡剂5～20份。(The invention discloses a preparation research method of a special auxiliary agent for glyphosate granules, which relates to the technical field of pesticides and prepares an efficient and compound multifunctional auxiliary agent formula by compounding betaine, glucoside, fatty alcohol-polyoxyethylene ether and polycarboxylate. The auxiliary agent comprises, by mass, 20-30 parts of betaine, 20-30 parts of glucoside, 40-60 parts of fatty alcohol-polyoxyethylene ether, 5-8 parts of polyvinyl alcohol, 5-15 parts of polycarboxylate, 5-15 parts of polyvinylpyrrolidone and 5-20 parts of an organic silicon anti-foaming agent.)

1. A preparation research method of a special auxiliary agent for glyphosate granules comprises, by mass, 20-30 parts of auxiliary agent betaine, 20-30 parts of glucoside, 40-60 parts of fatty alcohol-polyoxyethylene ether, 5-8 parts of polyvinyl alcohol, 5-15 parts of polycarboxylate, 5-15 parts of polyvinylpyrrolidone and 5-20 parts of organosilicon antifoaming agent, and is characterized in that: the method comprises the following steps:

Step one, mixing: adding betaine, glucoside, fatty alcohol-polyoxyethylene ether and an organosilicon antifoaming agent into a container with a stirrer, adding 70% ethanol, wherein the amount of the 70% ethanol is 5-11 times of the weight of polyvinylpyrrolidone, starting stirring, and stirring into a pasty adhesive solution for later use;

step two, uniformly mixing polyvinyl alcohol and polyvinylpyrrolidone, adding the pasty adhesive liquid prepared in the step A, and uniformly mixing for 20-40 minutes to obtain a soft material;

Step three, granulation: c, putting the soft material prepared in the step B into a granulator for granulation to obtain granules;

step four, drying: and D, drying the granules obtained by granulation in the step C in a dryer at the drying temperature of 70-110 ℃, and drying, sieving and grading to obtain the non-tallow amine auxiliary agent granules containing a small amount of fine powder. (note: the amount of ethanol added in 70% in the step A is 5-11 times of the weight of polyvinylpyrrolidone; and the uniform mixing in the step B is 20-40 minutes).

2. the preparation research method of the special auxiliary agent for glyphosate granules according to claim 1, which is characterized in that: the auxiliary agent comprises, by mass, 25 parts of betaine, 20 parts of glucoside, 50 parts of fatty alcohol-polyoxyethylene ether, 5 parts of polyvinyl alcohol, 10 parts of polycarboxylate, 5 parts of polyvinylpyrrolidone and 10 parts of an organosilicon antifoaming agent.

3. The preparation research method of the special auxiliary agent for glyphosate granules according to claim 2, which is characterized in that: the polycarboxylate in the auxiliary agent is a polycarboxylate dispersant.

Technical Field

the invention relates to the technical field of pesticides, in particular to a preparation research method of a special auxiliary agent for glyphosate granules.

Background

Glyphosate must be absorbed by plants to enter plant bodies to finally block the plant life process so as to achieve the weeding effect. The basic process of weeding by glyphosate is as follows: diluting the glyphosate auxiliary agent by water; spraying and applying the pesticide; wetting and spreading on the leaf surface of the plant; the drops begin to penetrate the waxy layer on the leaf surface (while water in the drops evaporates); the medicine drops enter the plant body fluid and are dispersed; the medicine drops are conducted to the roots of the plants along with the body fluid of the plants; enter the life unit of the plant, participate in and destroy the life process of the plant; plants gradually lose their vitality and eventually die. In this process, the main functions of the auxiliary agent are:

the interfacial tension and the contact angle between the medicine drop and the wax layer on the surface of the blade are reduced, so that the medicine drop is smoothly spread;

The capability of the medicine drops to penetrate through the wax layer on the surface of the blade is enhanced, so that the medicine drops can smoothly enter the plant body (or the absorption of the plant to the liquid drops is promoted);

the medicine drops are better dispersed and conducted in the plant body fluid until the medicine drops reach the life units of the plants.

Currently, the main adjuvants used in glyphosate energy are SAA: tallow amine, alkyl polyglycoside, fatty alcohol ethoxylate, organosilicon SAA, betaine, amino acids, anti-drift agent, hard water agent, synergist, etc. Glyphosate is a low-toxicity, broad-spectrum, high-efficiency, non-selective post-emergence herbicide, can be conducted in plants, but can only be applied to foliar spray to show herbicidal activity. The quality of the weeding effect depends greatly on the selection of proper good auxiliary agents to improve the weeding activity.

The special adjuvant for the non-tallow amine glyphosate granules is analyzed by comparing a glyphosate granule adjuvant tallow amine, and the special adjuvant for the non-tallow amine glyphosate granules is researched on the premise of inheriting the advantages of the tallow amine adjuvant and making up the defects of the tallow amine adjuvant. It should be noted, however, that many polyoxyethylene ether-type surfactants, both alkyl phenols and fatty alcohols, may exhibit similar or even superior performance. The tallow amine adjuvant has the most remarkable characteristics of promoting the absorption of the glyphosate and improving the conduction of the glyphosate in internal tissues of plants. It is worth pointing out that if the addition amount of the auxiliary agent is proper, the application object and the conditions are proper, not only the absolute amount of glyphosate conducted in the plant tissues can be improved, but also the conduction amount relative to the ingested glyphosate can be improved.

At present, the tallow amine assistant which is widely used as a special assistant for glyphosate has the disadvantages of good synergistic performance and low price, but has serious defects, particularly has greater irritation to skin and eyes and higher toxicity to aquatic organisms such as fish and the like; therefore, the existing requirements are not met, and a preparation research method of the special auxiliary agent for the glyphosate granules is provided for the people.

Disclosure of Invention

the invention aims to provide a preparation research method of a special auxiliary agent for glyphosate granules, which aims to solve the problems that the prior tallow amine auxiliary agent proposed in the background art has good synergistic performance and low price but has serious defects, particularly has high irritation to skin and eyes and high toxicity to aquatic organisms such as fish and the like, and is widely used as a special auxiliary agent for glyphosate.

In order to achieve the purpose, the invention provides the following technical scheme: a preparation research method of a special auxiliary agent for glyphosate granules comprises, by mass, 20-30 parts of auxiliary agent betaine, 20-30 parts of glucoside, 40-60 parts of fatty alcohol-polyoxyethylene ether, 5-8 parts of polyvinyl alcohol, 5-15 parts of polycarboxylate, 5-15 parts of polyvinylpyrrolidone and 5-20 parts of organosilicon antifoaming agent, and comprises the following steps:

Step one, mixing: adding betaine, glucoside, fatty alcohol-polyoxyethylene ether and an organosilicon antifoaming agent into a container with a stirrer, adding 70% ethanol, wherein the amount of the 70% ethanol is 5-11 times of the weight of polyvinylpyrrolidone, starting stirring, and stirring into a pasty adhesive solution for later use;

Step two, uniformly mixing polyvinyl alcohol and polyvinylpyrrolidone, adding the pasty adhesive liquid prepared in the step A, and uniformly mixing for 20-40 minutes to obtain a soft material;

Step three, granulation: c, putting the soft material prepared in the step B into a granulator for granulation to obtain granules;

Step four, drying: and D, drying the granules obtained by granulation in the step C in a dryer at the drying temperature of 70-110 ℃, and drying, sieving and grading to obtain the non-tallow amine auxiliary agent granules containing a small amount of fine powder. (note: the amount of ethanol added in 70% in the step A is 5-11 times of the weight of polyvinylpyrrolidone; and the uniform mixing in the step B is 20-40 minutes).

preferably, the auxiliary agent comprises, by mass, 25 parts of betaine, 20 parts of glucoside, 50 parts of fatty alcohol-polyoxyethylene ether, 5 parts of polyvinyl alcohol, 10 parts of polycarboxylate, 5 parts of polyvinylpyrrolidone and 10 parts of an organosilicon antifoaming agent.

preferably, the polycarboxylate in the auxiliary is a polycarboxylate dispersant.

Compared with the prior art, the invention has the beneficial effects that:

1. The non-tallow amine auxiliary agent has the positive effects that compared with the auxiliary agents of the same category, the non-tallow amine auxiliary agent has the advantages of being environment-friendly, greatly promoting the ingestion of plants to glyphosate, more effectively improving the weeding effect and the like.

2. the non-tallow amine assistant is an efficient and compound multifunctional assistant formula assistant, and the preparation of the non-tallow amine assistant greatly makes up for the defects of other types of assistants in aspects of high toxicity, low surface activity, obvious action effect and the like.

3. the betaine in the auxiliary agent component has good foaming thickening effect. The glucoside in the auxiliary agent is a novel nonionic surfactant with comprehensive performance, has the characteristics of common nonionic and anionic surfactants, has high surface activity, good ecological safety and intermiscibility, and is an internationally recognized green environmental-protection functional surfactant. The fatty alcohol-polyoxyethylene ether in the auxiliary agent is an important nonionic surfactant and mainly plays a role of an emulsifier and a wetting agent in the invention. The polyvinyl alcohol in the auxiliary agent is an emulsifier and an adhesive with good performance. The polycarboxylate dispersant in the auxiliary agent has small sensitivity to ions, pH value, temperature and the like in a suspension system, high dispersion stability and difficult sedimentation and flocculation; the solid content of the system is improved, the viscosity of the dispersion system is obviously reduced, and the high-solid-content high-fluidity high-viscosity low-viscosity high-fluidity high. The polyvinylpyrrolidone in the adjuvant is a high molecular surfactant and plays a role of a disintegrating agent in the invention. The organosilicon antifoaming agent in the adjuvant is prepared by mechanically emulsifying silicone grease, emulsifier, waterproofing agent, thickening agent and the like with proper amount of water, and has the characteristics of small surface tension, high surface activity, strong defoaming force, small dosage and low cost

drawings

FIG. 1 is a photograph showing a test of the present invention after 5 days without application;

FIG. 2 is a photograph showing the test of the commercial adjuvant 1 of the present invention after 5 days of application;

FIG. 3 is a photograph showing a test 5 days after application of commercially available adjuvant 2 of the present invention;

FIG. 4 is a photograph showing the test of the commercially available adjuvant of the present invention after 5 days from the application of 3 days;

FIG. 5 is a photograph showing the test of the commercial adjuvant of the present invention after 5 days from 4 days of application;

FIG. 6 is a photograph showing the test 5 days after the adjuvant of the present invention was applied;

FIG. 7 is a photograph showing the test conducted 10 days after the non-application of the present invention

FIG. 8 is a photograph showing the test 10 days after the application of commercial adjuvant 1 according to the present invention;

FIG. 9 is a photograph showing the test 10 days after the application of commercial adjuvant 2 of the present invention;

FIG. 10 is a photograph showing the test 10 days after application of the commercially available adjuvant of the present invention 3;

FIG. 11 is a photograph showing the test 10 days after the application of the commercial adjuvant of the present invention 4;

FIG. 12 is a photograph showing the test 10 days after the adjuvant of the present invention is applied;

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.