Composite material with high wettability and applications thereof

Abstract

The application belongs to the field of chemical materials, and particularly relates to a composite material with high wetting and application thereof, and more particularly relates to a composite material containing a surfactant, the composite material comprising the following components: component A and component B; wherein the component A is a surfactant, preferably a biosurfactant, and is specifically selected from sophorolipid, sodium lauroyl glutamate, sodium cocoyl glycinate, NP-7, NP-9, NP-10, NSS or Triton X100; and the component B is selected from limonene, sweet orange essential oil, dried tangerine peel essential oil, pine essential oil or limonene. Through wetting force performance testing on the composite material, under the special properties of the sophorolipid surfactant and through the joint action with reagents, obvious wetting force improvement can be detected.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of chemical materials, and particularly relates to a composite material with high wettability and application thereof, and more particularly to a composite material containing a surfactant. BACKGROUND

[0002] Hydrophilicity and hydrophobicity are important characteristics of interfaces. At a solid-liquid interface, the contact angle is a key parameter for characterizing the hydrophilic and hydrophobic properties of the interface, and is used to characterize the spreading degree of a liquid on the interface. When a liquid droplet contacts a solid surface, it either remains in the form of a droplet or spreads on the surface to form a liquid film. This property is usually measured by the contact angle (CA). For a solid surface, when its contact angle with water or oil is close to 0°, it is called a superhydrophilic or superoleophilic surface; when the contact angle is greater than 150°, it is called a superhydrophobic or superoleophobic surface. Superhydrophobic surfaces have excellent self-cleaning and water-repellent properties, and are expected to have a promising application prospect in high-tech fields and daily life. At present, superhydrophobic surfaces on hydrophilic materials have been prepared through biomimicry of the micro-nano structure of lotus leaves, and have reached a quasi-commercialization level. For example, water (mist) droplets can rapidly spread on a titanium dioxide nanocrystal surface irradiated by ultraviolet light. This superhydrophilic material has been successfully used as an anti-fog and self-cleaning transparent coating [2]. Superhydrophobic surfaces generally refer to surfaces with a contact angle with water greater than 150°, and have a very broad application prospect in industrial and agricultural production and people's daily life, for example, they can be used for snow prevention, pollution prevention, oxidation resistance and prevention of current conduction, etc.

[0003] Biological surfactants have attracted much attention due to their degradability, environmental compatibility, low critical micelle concentration, etc. Biological surfactants are mainly two-antiphilic molecules produced by bacteria and fungi, and are mainly divided into glycolipids, lipopeptides and phospholipids according to their biochemical properties. Biological surfactants have a wide application prospect in the fields of environmental remediation, agriculture and food industry. However, the high production cost and low yield of biological surfactants limit their large-scale use.

[0004] Sophorolipids are a kind of excellent biological surfactants, with non-polar hydrophobic groups composed of aliphatic hydrocarbon chains and polar hydrophilic groups in the molecular structure, and functional groups that are difficult to synthesize by chemical methods. Sophorolipids have complex molecular structures, low critical micelle concentration (CMC), and can effectively reduce the surface tension of liquids to about 35 mN / m. As a kind of glycolipid biological surfactant, sophorolipids can utilize the special properties of surfactants, and the molecular structure can form a "micelle" with the hydrophilic group outward and the hydrophobic group inward. By directional adsorption, when the solution concentration increases to close to the critical micelle concentration, the material can be adsorbed on the solid surface, at which time the polar group faces the solid and the non-polar group faces the gas phase, forming an adsorption layer. Through the carbon and hydrogen groups on the surface of the solid adsorption layer, the original high-energy surface of the solid is converted into a low-energy surface, achieving wetting effect. Wettability is one of the important characteristics of solid surfaces, which is determined by the chemical composition and micro-geometric structure of the surface. Interfacial wettability is one of the fundamental problems in materials science, and the study of wettability regulation has important significance in exploring new knowledge and creating new applications.

[0005] Wang J et al. [3] used sophorolipids as a wetting dispersant for polimyxin SC and determined that sophorolipids can reduce the particle size of polimyxin suspension and improve the stability of the suspension, making them suitable as a dispersing agent for polimyxin suspension. This study proves that biological surfactants can partially replace chemical surfactants and be applied to pesticide suspensions.

[0006] Wang K et al. [4] used a mixture of rhamnolipids and sophorolipids in a certain proportion to construct a new type of green degradable composite dust inhibitor formula, which optimized the wetting speed of coal ash from 1.887 mg / s to 3.333 mg / s.

[0007] Lin J et al. [5] used sophorolipids with stronger wetting reversal performance as oil displacement agent, and the water separation rate value could still maintain at 25% after 400 min, with a crude oil viscosity reduction rate of more than 85% in the test block.

[0008] With the development of human science and technology, the use of pesticides has significantly improved the grain yield, but also caused great damage to the environment. In the process of pesticide spraying, about 50% of the pesticide is scattered in the soil and air due to the splashing of pesticide droplets on the surface of plant leaves, which seriously pollutes the air, soil and groundwater, and increases the number of pesticide spraying, causing more rounds of pesticide waste and environmental pollution. Most of the plant leaves are super-hydrophilic and super-hydrophobic surfaces, and the influencing factors of controlling the collision behavior of liquid droplets on super-hydrophilic and super-hydrophobic surfaces are numerous. Although there are many reports on the collision behavior of liquid droplets in the literature, due to the complexity of such a process, a large number of basic scientific problems and technical problems still need to be solved. By deeply understanding the basic scientific problems of surfactants in influencing the collision behavior of liquid droplets on the surface, various efficient surfactant systems can be developed to effectively control the collision behavior of liquid droplets on different macroscopic, microscopic composition and structure of special wettability surface. For example, anionic surfactant dioctyl sodium sulfosuccinate (AOT) can inhibit the splashing and splashing of pesticide droplets on the super-hydrophobic plant surface.

[0009] An important problem that cannot be avoided in the field of practical super-hydrophobicity is the strength problem of super-hydrophobic surface. Since super-hydrophobic surface relies on micro / nano structure, which is easy to wear, the super-hydrophobic surface has the weakness of 'not solid', so although there are many methods for preparing super-hydrophobic surface and great application prospects, the scale commercialization of super-hydrophobic products is still far away, and most of the super-hydrophobic films reported in the laboratory do not meet the requirements of practical application.

[0010] The interfacial tension of two phases makes the wetting process complex, so the improvement of wettability is particularly important for the complete contact of solid and liquid surface, for example, in the textile industry, surfactants improve the wettability of water to the surface of washing materials by reducing the surface tension of water, significantly improve the wettability of fibers and improve the efficiency of dyeing; in cleaning applications, the wetting ability of surfactants can enhance the dispersion and suspension ability of dirt, which is an important factor for decontamination; in the field of agriculture, adding sophorolipids to pesticide and foliar fertilizer spraying liquid can improve the wetting and spreading ability of spraying liquid on plant leaves, promote the effective absorption of plant to pesticide active ingredients and foliar fertilizer under the condition of no pollution and plant damage.

[0011] Sophorolipids as biosurfactants have the general properties of traditional surfactants such as solubilization, emulsification, wetting, foaming, dispersion, and reduction of surface tension. In addition, sophorolipids are non-toxic, biodegradable, temperature-resistant, high-salt-tolerant, and environmentally friendly. However, the stability of industrial sophorolipid products is insufficient, and the effects of different raw materials and different batches of products under different conditions vary greatly. Jadhav V et al. [7] explored the difference in wetting force between sophorolipids produced by different substrates and traditional surfactant Tween-20, showing that sophorolipids still have a gap in wetting ability compared to Tween-20, and the wetting ability of single sophorolipids still needs to be improved. In the process of application, single sophorolipids also have the disadvantage of insufficient adaptability.

[0012] Sophorolipids as glycolipid biosurfactants have high viscosity and high production cost. High concentration may adhere and block the pipeline to improve the cost and bring safety hazards. Therefore, CN114130560A discloses a formula of sophorolipid, NaCl, ethylenediaminetetraacetic acid, amine ester, konjac glucomannan, and water in a ratio of 4:1:2:2:2:6 to try to solve the problem of sophorolipid viscosity. The above problems limit its application in related fields, and there is an urgent need to find a means to achieve high wetting force effect at low concentration of sophorolipid under low-cost conditions.

[0013] In recent years, materials with special wetting properties have attracted widespread attention due to their unique physicochemical properties. However, the existing preparation methods of superhydrophobic surfaces are generally complex and expensive, and their superhydrophobicity is difficult to be compatible with other material properties, which limits their practical application. Therefore, it is particularly necessary to conduct in-depth theoretical research to optimize the design of surface micro-nano structure and fully utilize external action to control its wetting behavior to realize its application in certain high-tech fields. The key point is the fragile mechanical stability of the surface structure of superhydrophobic surfaces in practical application, so improving the strength of the surface structure of the coating film has become the top priority of the research.

[0014] The phase behavior of surfactants is mostly a balance process driven by hydrophobic effect, involving non-specific interactions between the fatty chains of surfactants. This interaction is offset by some repulsive conditions on free energy, including but not limited to space, electrostatic and interface composition. The first two conditions affect the hydrophilic head group, while different interface compositions will prompt the surfactant to self-assemble in solution to form a micellar phase or spherical phase. According to the changes in the shape of surfactant molecules or other conditions, the micellar phase can also evolve into a cylindrical phase, a vesicle phase, a lamellar phase, or a fibrous phase[8]. Using the rich phase behavior of surfactant solutions with nanoscale microenvironment as a microreactor, under the action of surfactant structure and amphiphilic properties, the growth of nanoscale aggregates is guided and regulated, so as to form complex materials with rich and controllable morphology, and the final product can be obtained as a template of ordered aggregates.

[0015] Sophorolipids are a representative biosurfactant, which can reduce surface tension, improve the wetting and spreading ability of the mixed liquid surface, and have the characteristics of safe, environmentally friendly, non-toxic, harmless and biodegradable production and preparation method, and have a wide range of applications, including household detergents, personal care, textiles, industrial and institutional cleaning, elastomers and plastics, oil field chemicals, food and beverages, crop protection and other use markets, such as pharmaceuticals, construction, paints and inks, and also have broad application prospects in the field of agriculture. The disadvantage is that the single sophorolipid component wetting force is difficult to compare with the classic wetting agent, and it is difficult to achieve good wetting effect, therefore, improving the wetting performance of sophorolipid is an urgent need to promote its wide application.

[0016] References:

[0017] [1] Che P, Heng L, Jiang L. Lubricant-Infused Anisotropic Porous Surface Design of Reduced Graphene Oxide Toward Electrically Driven Smart Control of Conductive Droplets' Motion [J]. Advanced Functional Materials, 2017, 27(22): 1606199.

[0018] [2] Wang R, Hashimoto K, Fujishima A, et al. Light-induced amphiphilic surfaces [J]. Nature, 1997, 388(6641): 431-432.

[0019] [3]Wang J, Niu Y, Zhang B, et al. Screening of Wetting Dispersants in Spinosad SC with Addition of Sophorolipid [J]. Modern Agrochemicals, 2016, 15(5): 18-21.

[0020] [4]Wang K, Zhang Y, Cai W, et al. Study on the microscopic mechanism and optimization of dust suppression by compounding biological surfactants [J]. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2021, 625: 126850.

[0021] [5]Lin J, Wang J, Wang W, et al. Oil displacement performance of biosurfactants [J]. Journal of China U-niversity of Petroleum (Edition of Natural Science), 2022, 46(2): 145-51.

[0022] [6]Song M, Ju J, Luo S, et al. Controlling liquid splash on superhydrophobic surfaces by a vesicle surfactant [J]. Science advances. 2017 Mar 1; 3(3): e1602188.

[0023] [7]Jadhav V, Pratap P, Kale B. Evaluation of sunflower oil refinery waste as feedstock for production of sophorolipid [J]. Process Biochemistry, 2019, 78: 15-24.

[0024] [8]Dierickx S, Castelein M, Remmery J, et al. From bumblebee tobioeconomy: Recent developments and perspectives for sophorolipid biosynthesis[J]. Biotechnology Advances, 2022,54:107788. Summary of the Invention

[0025] The present invention aims to construct a composite material by using sophorolipid and limonene, and to achieve high wetting power by utilizing the special structure of the material.

[0026] The research process is as follows: First, by using sophorolipids and oils as components of the composite material, the wetting performance improvement effect of the composite material was determined, and it was found that sophorolipids and sweet orange essential oil had the best improvement effect. Considering that the main component of sweet orange essential oil is limonene, the composition was optimized to limonene to further optimize the wetting performance of the composite material. Furthermore, the composition concentration of sophorolipids and limonene was tested using response surface methodology to determine the corresponding optimal concentration and optimal composition ratio from a statistical perspective. Through testing the wetting performance with limonene and other surfactant component B as components, it was found that sophorolipids still had the best effect, and the wetting performance improvement effect was determined to be based on the combined effect of sophorolipids and limonene. The composite material was also constructed using different types of sophorolipids and limonene to determine the influence of sophorolipid type on the improvement of wetting performance. SEM electron microscopy tests were also conducted on composite materials with specific composition ratios to try to analyze the key reasons for the significant improvement in wetting performance of the composite material.

[0027] Therefore, the present invention provides a composite material with high wettability, comprising the following components: component A and component B. Component A is a surfactant, preferably a biosurfactant, specifically selected from sophorolipids, sodium lauroyl glutamate, sodium cocoyl glycinate, nonylphenol polyoxyethylene ether-7 (NP-7), nonylphenol polyoxyethylene ether-9 (NP-9), nonylphenol polyoxyethylene ether-10 (NP-10), plant polyenes (NSS), or Triton X100, with sophorolipids being the most preferred. Component B is selected from limonene, sweet orange essential oil, tangerine peel essential oil, pine essential oil, or limonene, with limonene being the most preferred.

[0028] The component A has the common point of being a common surfactant, can be miscible with limonene, and has poor wetting force itself, and still has room for improvement, and the performance thereof is improved by the present application. The component B has the common point of being one of sweet orange essential oil, orange peel essential oil, pine essential oil, or limonene, and the component B itself belongs to oil and fat and is insoluble in water and cannot be uniformly dispersed in water.

[0029] In addition, preferably, the amount of component A is 0.02-1.5 g / L, preferably the concentration is 0.5-1.5 g / L, and most preferably 1.1-1.2 g / L, for example 1.166 g / L; and the amount of component B is 0.02-1.5 g / L, preferably the concentration is 0.1-1.0 g / L, and more preferably 0.4-0.5 g / L, for example 0.470 g / L.

[0030] The present application further provides the application of the composite material as a wetting agent, in particular as an adjuvant for pesticides, to reduce the surface tension or interfacial tension of the pesticides, so that the plant surface can be wetted by the pesticides, to increase the contact area of the pesticide solution with the crops, maintain the effective concentration of the pesticides, enhance the absorption of the pesticides by the plants, and improve the efficacy of the pesticides.

[0031] The present application relates to a composite material, preferably composed of sophorolipid and limonene, which can greatly improve the wetting force at a lower concentration, improve the wetting performance of hydrophobic surfaces, effectively promote the transportation and delivery of active ingredients, and has the advantages of simple method, easy scaling up, and low cost. The composite material has excellent wetting properties and can be widely used in the fields of medicine, cosmetics, agricultural chemicals, and daily chemicals. Specifically, through repeated screening and verification, the preferred method of the present application uses limonene and sophorolipid to construct a composite material, which achieves the effect of improving the wetting force based on the combined action of sophorolipid and limonene, rather than the single effect of sophorolipid or limonene. The obtained material has the following advantages: it can effectively improve the wetting force. Through wetting force performance test of the composite material, under the special properties of the surfactant sophorolipid, the composite material can detect obvious improvement of the wetting force through the combined action with the reagent. Compared with the common organic silicon on the market, the settling time of the optimal formula 1.166 g / L sophorolipid + 0.470 g / L limonene is 3.31 s, which is significantly better than 11.81 s of 0.2 g / L organic silicon; the method is simple and has great cost advantage. Compared with the known formula disclosed in CN115067330A and CN112514901A, the material constructed by the present application only needs two materials, 0.034-1.166 g / L sophorolipid + 0.034-1.166 g / L limonene, with lower concentration and easy scaling up; it is green and environmentally friendly. Sophorolipid, as a biological surfactant, is produced by microorganisms, and compared with traditional chemical surfactants, it has the advantages of safe and environmentally friendly production method, excellent biological compatibility, and non-toxic and harmless degradability.BRIEF DESCRIPTION OF DRAWINGS BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 Wetting force testing device example.

[0033] Figure 2 Response surface plot of settling time with sophorolipids and limonene.

[0034] Figure 3 The composite material prepared in Experimental Example 33 was observed under a SEM electron microscope to observe the nanospatial structure.

[0035] Figure 4 The composite material prepared in Experimental Example 34 was observed under a SEM electron microscope to observe the nanospatial structure. DETAILED DESCRIPTION

[0036] The specific embodiments of the present application are described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the present application.

[0037] Example 1, effect of essential oils on the wetting force of sophorolipids

[0038] Relevant reagent preparation: see Table 1 for specific ingredients for Examples 1-3.

[0039] Table 1: Configuration scheme for Experimental Examples 1-3

[0040]

[0041] Experimental scheme:

[0042] The composite material was constructed by adding each component to a beaker according to the corresponding concentration, using a magnetic stirrer to stir for 10-30 minutes until the spatial structure was formed. According to the national standard of the People's Republic of China, GB / T 11983-2008, a special-purpose canvas was purchased from the Shanghai Textile Industry Technology Supervision Institute.

[0043] The canvas test piece was gently clamped with a soaking clamp, and when the canvas test piece was completely immersed in 1L of the test sample, the stopwatch was started, and the flat three-pronged arm was placed at the mouth of the wetting force testing device (as shown in Figure 1 When the canvas test piece began to drop, the stopwatch was stopped, and the settling time was recorded. Each sample was continuously tested 10 times in the same way, and the average value was taken. The experimental results are shown in Table 2.

[0044] Table 2: Settling time for Experimental Examples 1-3

[0045] No. Experimental Example 1 Experimental Example 2 Experimental Example 3 Comparative Example 1 Sedimentation time (s) 24.59 28.26 20.61 67.88

[0046] The results of Table 2 show that the use of various essential oils and sophorolipids to construct composite materials has a significant increase in wetting force compared to sophorolipids alone. Among them, when the essential oil is sweet orange essential oil, there is the most optimal wetting force improvement effect. Through analysis and research, the main component of sweet orange essential oil is limonene, so it is decided to optimize the composition to limonene.

[0047] Example Two, Test the Effect of Limonene on the Wetting Force of Sophorolipids

[0048] Relevant reagent preparation: The specific components of Experimental Example 4 are shown in Table 3 (and compared with the original Experimental Example 3, as well as when only sophorolipids are used).

[0049] Table 3 Configuration scheme of Experimental Example Two

[0050]

[0051] The relevant experimental example configuration and experimental scheme are the same as above. The experimental results are shown in Table 4.

[0052] Table 4 Settlement time of Experimental Example Two

[0053] No. Experimental Example 3 Experimental Example 4 Comparative Example 1 Sedimentation time (s) 20.61 6.42 67.88

[0054] The results of Table 4 show that the use of limonene and sophorolipids as components to construct composite materials has a significant increase in wetting force compared to sophorolipids alone. And compared with sweet orange essential oil, using limonene has a larger wetting force improvement effect than the same weight of sweet orange essential oil. Therefore, the preferred component composition is limonene for further research.

[0055] Example Three, Use of Sophorolipids and Limonene Response Surface Method to Construct Optimal Wetting Force Effect Test

[0056] Relevant reagent preparation: The specific components of Experimental Examples 5-17 are shown in Table 5.

[0057] Table 5 Sophorolipid and Limonene Proportion Experimental Example

[0058] Lactone sophorolipid (g / L) Limonene (g / L) Sedimentation time (s) Experimental Example 5 0.6 0.6 6.02 Experimental Example 6 0.6 0.6 6.72 Experimental Example 7 0.6 0.6 6.43 Experimental Example 8 1 1 3.33 Experimental Example 9 0.6 0.6 5.78 Experimental Example 10 0.6 0.03431 35.40 Experimental Example 11 0.2 0.2 5.63 Experimental Example 12 0.03431 0.6 9.50 Experimental Example 13 1.16569 0.6 6.50 Experimental Example 14 0.2 1 4.65 Experimental Example 15 1 0.2 3.94 Experimental Example 16 0.6 0.6 5.60 Experimental Example 17 0.6 1.16569 11.31

[0059] The relevant experimental example configuration and experimental scheme are the same as above. The experimental results are shown in Table 5. The results of Table 5 are fitted and plotted, and the surface plot is shown in Figure 2 and the predicted optimal solution Table 6. The component proportion experimental example obtained by fitting is verified, and the relevant experimental example configuration and experimental scheme are the same as above. The settlement time of sophorolipids (1.166 g / L) and limonene (0.470 g / L) in the experimental results is 3.31 s, thus obtaining the optimal wetting force effect.

[0060] Table 6 Settlement time under the optimal solution condition

[0061] Lactone sophorolipid (g / L) Limonene (g / L) Sedimentation time (s) Complex desirability Verification Example 1.16569 0.46955 3.0519 0.99932

[0062] Example 4, test the wetting force effect of limonene and other surfactants to construct composite materials

[0063] The related reagent preparation: the specific components of experimental examples 18-25 are shown in Table 7.

[0064] Table 7 Component ratio of experimental examples in Example 4

[0065] The related experimental example configuration and experimental scheme are the same as above. The experimental results are shown in Table 8.

[0066] Table 8 Sedimentation time of experimental examples in Example 4

[0067] The results of Table 9 show that the components of limonene and sophorolipid (same as experimental example 11 above) have the best wetting force enhancement effect, and the wetting force enhancement effect is based on the combined effect of sophorolipid and limonene.

[0068] Example 5, test the wetting force effect of limonene and different types of sophorolipid to construct composite materials

[0069] The related reagent preparation: the specific components of experimental examples 26-33 are shown in Table 9.

[0070] Table 9 Component ratio of experimental examples in Example 5

[0071]

[0072] The related experimental example configuration and experimental scheme are the same as above. Among them, the main component of a certain commercially available sophorolipid is sophorolipid, and other components also include fatty alcohol polyoxyethylene ether (Aeo9), fatty alcohol polyoxyethylene ether sodium sulfate (Aes), sulfonic acid, bactericide, essence, cellulose. The present application shows that other commercially available sophorolipids can also achieve good results.

[0073] The experimental results are shown in Table 10.

[0074] Table 10 Sedimentation time of experimental examples in Example 5

[0075]

[0076] The results of Table 11 show that under the condition of a certain component concentration ratio, any type of sophorolipid can form a specific composite material with limonene to significantly improve the wetting force, and the use of lactone type sophorolipid has the best wetting effect.

[0077] Example 6, test the nano-space structure of composite materials with different component ratios

[0078] In order to analyze the reason why the composite material can improve the wetting force, the component ratio of the composite material with the optimal wetting effect is selected to construct the composite material, and the appearance structure thereof is monitored.

[0079] Related sample preparation: the specific components of experimental examples 34-353 are shown in Table 11.

[0080] Table 11: Component ratio of experimental examples in Example Six

[0081] No. Experimental Example 34 Experimental Example 35 Composition ratio (lactone sophorolipid concentration: limonene concentration) 1:2 1.166:0.470

[0082] The related experimental example configuration and experimental scheme are the same as above. The nano-space structure is observed under the SEM electron microscope. The observation results are shown in Figure 3 (experimental example 34) and Figure 4 (experimental example 35).

[0083] When the main components of the composite material reach a specific ratio, i.e., the ratio of sophorolipid to limonene is 1.166:0.470, the maximum wetting force improvement effect is achieved, and a special nano structure is observed under the SEM electron microscope; on the contrary, when the components do not reach a specific ratio, such as the ratio of sophorolipid concentration to limonene concentration is 1:2, the special nano structure is not observed.

[0084] The process method of the present application is illustrated by the above examples, but the present application is not limited to the above process steps, i.e., it does not mean that the present application must rely on the above process steps to be implemented. It should be understood by those skilled in the art that any improvement on the present application, equivalent replacement of the raw materials selected by the present application, addition of auxiliary ingredients, selection of specific methods, etc., all fall within the protection scope and disclosure scope of the present application.

Claims

1. A composite material with high wetting property, comprising the following components: component A and component B; wherein the component A is a sophorolipid; and the component B is limonene.

2. The composite material of claim 1, wherein, The component A is an intramolecular sophorolipid.

3. The composite material of claim 1 or 2, wherein, The amount of the component A is 0.02-1.5 g / L; and the amount of the component B is 0.02-1.5 g / L.

4. The composite material of claim 3, wherein, The amount of the component A is 0.5-1.5 g / L; and the amount of the component B is 0.1-1.0 g / L.

5. The composite material of claim 4, wherein, The amount of the component A is 1.1-1.2 g / L; and the amount of the component B is 0.1-1.0 g / L.

6. The composite material of claim 5, wherein, The amount of the component A is 1.166 g / L; and the amount of the component B is 0.470 g / L.

7. Use of the composite material according to any one of claims 1-6 as a wetting agent.

8. Use according to claim 7, wherein the compound is ###0002### The use is as an adjuvant for pesticides to reduce the surface tension or interfacial tension of the pesticides.

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