阅读说明：本技术 一种超疏水液-固接触摩擦纳米发电机的制备方法及装置 (Preparation method and device of super-hydrophobic liquid-solid contact friction nano generator ) 是由 杨光 胡三明 石志军 龙笑 叶伟亮 杨跃梅 刘昊 李立杰 于 2020-04-21 设计创作，主要内容包括：本发明公开了一种超疏水液-固接触摩擦纳米发电机的制备方法及装置。所述超疏水液-固接触摩擦纳米发电机的制备方法包括：将铜箔胶带剪成具有指间结构的电极片；将两个电极片交叉粘贴在两个双面胶层之间得到具有三明治结构的摩擦发电机基底。制备含有二氧化硅纳米颗粒的超疏水分散液；将基底去除一面双面胶保护层后浸润至所述超疏水分散液中,使二氧化硅纳米颗粒附着在基底上；将附着有二氧化硅纳米颗粒的基底进行风干,从而获得所述超疏水液-固接触摩擦纳米发电机。本申请提供的超疏水液-固接触摩擦纳米发电机制备方法简单,绿色环保,且制备的超疏水液-固接触摩擦纳米发电机具有柔性、可粘黏性和高的能量转化效率和灵敏度。(The invention discloses a preparation method and a device of an ultra-hydrophobic liquid-solid contact friction nano generator. The preparation method of the super-hydrophobic liquid-solid contact friction nano generator comprises the following steps: cutting the copper foil adhesive tape into electrode plates with an inter-finger structure; and (3) the two electrode plates are crossed and stuck between the two double-sided adhesive layers to obtain the friction generator substrate with the sandwich structure. Preparing a super-hydrophobic dispersion liquid containing silicon dioxide nano-particles; removing one double-sided adhesive tape protection layer from the substrate, and soaking the substrate into the super-hydrophobic dispersion liquid to attach the silicon dioxide nanoparticles to the substrate; and air-drying the substrate attached with the silica nanoparticles to obtain the super-hydrophobic liquid-solid contact friction nano-generator. The super-hydrophobic liquid-solid contact friction nano-generator is simple in preparation method and environment-friendly, and has flexibility, viscosity and high energy conversion efficiency and sensitivity.)

1. A preparation method of a super-hydrophobic liquid-solid contact friction nano-generator is characterized by comprising the following steps:

preparing an electrode plate, wherein the preparation of the electrode plate comprises the step of shearing a copper foil adhesive tape into the electrode plate with an inter-finger structure;

manufacturing a substrate, wherein the manufacturing of the substrate comprises the step of pasting two electrode plates between two layers of double-sided adhesive tapes in a crossed manner to obtain the substrate of the friction nano generator with a sandwich structure;

preparing a super-hydrophobic dispersion liquid containing silicon dioxide nano-particles;

soaking a substrate into the super-hydrophobic dispersion liquid to enable the silicon dioxide nano particles to be adhered to the substrate;

and air-drying the substrate attached with the silica nanoparticles to obtain the super-hydrophobic liquid-solid contact friction nano-generator.

2. The method for preparing the superhydrophobic water-solid contact friction nanogenerator according to claim 1, wherein the copper foil tape is a double-conductive copper foil tape, and the thickness of the copper foil is 0.056 mm;

preferably, the width of each electrode of the base is 7mm, and the spacing distance between adjacent electrodes is 2 mm;

preferably, the silica nanoparticles are hydrophobic fumed silica nanoparticles having an average particle size of 14 nm.

3. The method of preparing the superhydrophobic-solid contacting friction nanogenerator of claim 1, wherein the preparing the superhydrophobic dispersion containing silica nanoparticles comprises:

placing the silica nanoparticles into an anhydrous ethanol solution, thereby forming a mixed solution;

magnetically stirring the mixed solution to obtain a stirred mixed solution;

and carrying out ultrasonic dispersion on the stirred mixed solution so as to obtain the super-hydrophobic dispersion liquid containing the silicon dioxide nano particles.

4. The method for preparing the superhydrophobic-solid contact friction nanogenerator of claim 3, wherein the preparing of the superhydrophobic dispersion containing silica nanoparticles comprises:

placing 2.4g of silica nanoparticles into 100ml of an anhydrous ethanol solution, thereby forming a mixed solution;

magnetically stirring the mixed solution at a speed of 500 revolutions per minute for 1 hour to obtain a stirred mixed solution;

performing ultrasonic dispersion on the stirred mixed solution for 10 minutes to obtain the super-hydrophobic dispersion liquid containing the silicon dioxide nano particles;

preferably, the soaking time is at least 1 minute; the air drying time is at least 2 hours.

5. A super-hydrophobic liquid-solid contact friction nano-generator, which is characterized in that the super-hydrophobic liquid-solid contact friction nano-generator is prepared by adopting the preparation method of the super-hydrophobic liquid-solid contact friction nano-generator according to any one of claims 1 to 4.

6. An umbrella, characterized in that it comprises:

the umbrella cloth is characterized by comprising umbrella cloth, wherein one surface of the umbrella cloth is a rain surface;

the super-hydrophobic liquid-solid contact friction nano-generator is the super-hydrophobic liquid-solid contact friction nano-generator according to claim 5, the super-hydrophobic liquid-solid contact friction nano-generator is installed on the rain surface, and the super-hydrophobic liquid-solid contact friction nano-generator is configured to generate current in cooperation with liquid falling on the super-hydrophobic liquid-solid contact friction nano-generator.

7. A drainage bottle, comprising:

a bottle body;

the polyvinylidene fluoride substrate is obliquely arranged inside the bottle body;

the super-hydrophobic liquid-solid contact friction nano-generator is the super-hydrophobic liquid-solid contact friction nano-generator according to claim 5, the super-hydrophobic liquid-solid contact friction nano-generator is mounted on the polyvinylidene fluoride substrate, and the polyvinylidene fluoride substrate is configured to generate current in cooperation with liquid entering from a drainage bottle and falling on the super-hydrophobic liquid-solid contact friction nano-generator.

8. A tubular drop counter, comprising:

a silicone tube;

the super-hydrophobic liquid-solid contact friction nano-generator is the super-hydrophobic liquid-solid contact friction nano-generator according to claim 5, the super-hydrophobic liquid-solid contact friction nano-generator is arranged on the inner wall of the silicone tube, and the liquid entering the silicone tube and passing through the super-hydrophobic liquid-solid contact friction nano-generator is matched to generate current.

9. An infusion set, characterized in that it comprises:

the first infusion pipe section comprises a first infusion pipe liquid inlet end and a first infusion pipe liquid outlet end;

the tubular drop counter according to claim 5, wherein one end of the silicone tube of the tubular drop counter is communicated with the outlet end of the first infusion tube.

10. A raindrop energy capture device, comprising: the super-hydrophobic liquid-solid contact friction nano-generator is the super-hydrophobic liquid-solid contact friction nano-generator according to claim 5.

Technical Field

The invention relates to the technical field of liquid-solid power generation, in particular to a preparation method of a super-hydrophobic liquid-solid contact friction nano-generator, the super-hydrophobic liquid-solid contact friction nano-generator, an umbrella, a drainage bottle, a liquid drop counter, an infusion apparatus, a raindrop energy capturing device and a liquid drop sensor.

Background

Since the advent of the friction nano-generator (TENG), people have attracted extensive attention because of its advantages of low cost, simple structure, high efficiency of converting kinetic energy into electrical energy, and the like. TENG is based on the principle that under the action of external mechanical forces, two different materials come into contact with each other to generate an electric current due to triboelectric generation and electrostatic induction. It is well known that water is a clean, abundant and renewable energy source. Researchers have devised a variety of TENG studies to collect mechanical energy from natural water currents, such as waterfalls, tides, raindrops and waves. Researchers have found that when a liquid comes into contact with a solid surface, it spontaneously develops a net charge. They generalize this phenomenon as "discrete liquid-solid contact charging". Thus, it turns out that water itself can be one of the materials used to contact solid surfaces with electrical charges. Based on this researcher, many liquid-solid contact TENG were developed to collect droplet energy. These liquid-solid contact TENGs have significant advantages over previous solid-solid contact TENGs, namely, effectively reducing friction material wear and extending the useful life of TENG.

Although liquid-solid contact TENG is very promising, the disadvantages are also very evident: it is difficult to remove the liquid from the solid surface after the liquid droplets contact, resulting in a decrease in energy conversion efficiency. It is noted that superhydrophobic surfaces have a number of applications in our daily lives, such as self-cleaning, stain resistance, reducing liquid resistance, chemical shielding, anti-corrosive coatings, and the like. The liquid will accumulate on the superhydrophobic surface and easily slide off the superhydrophobic surface. Based on this, researchers designed TENG through hydrophobic or superhydrophobic solid surfaces.

Accordingly, a technical solution is desired to overcome or at least alleviate at least one of the above-mentioned drawbacks of the prior art.

Disclosure of Invention

The invention aims to provide a preparation method of an ultra-hydrophobic liquid-solid contact friction nano generator.

In order to achieve the above object, the present application provides a method for preparing a superhydrophobic water-solid contact friction nanogenerator, the method comprising:

manufacturing an electrode slice, wherein the electrode slice manufacturing comprises the steps of cutting a copper foil adhesive tape into electrode slices with an inter-finger structure;

manufacturing a substrate, wherein the manufacturing of the substrate comprises the step of pasting two electrode plates between two layers of double-sided adhesive tapes in a crossed manner to obtain the substrate of the friction nano generator with a sandwich structure;

preparing a super-hydrophobic dispersion liquid containing silicon dioxide nano-particles;

soaking a substrate into the super-hydrophobic dispersion liquid to enable the silicon dioxide nano particles to be adhered to the substrate;

and air-drying the substrate attached with the silica nanoparticles to obtain the super-hydrophobic liquid-solid contact friction nano-generator.

Optionally, the copper foil tape is a double-conductive copper foil tape, and the thickness of the copper foil is 0.056 mm.

Optionally, the base electrode has a width of 7mm and a spacing distance between adjacent electrodes of 2 mm.

Optionally, the preparing of the superhydrophobic dispersion containing silica nanoparticles includes:

placing the silica nanoparticles into an anhydrous ethanol solution, thereby forming a mixed solution;

magnetically stirring the mixed solution to obtain a stirred mixed solution;

and carrying out ultrasonic dispersion on the stirred mixed solution so as to obtain the super-hydrophobic dispersion liquid containing the silicon dioxide nano particles.

Optionally, the silica nanoparticles are hydrophobic fumed silica nanoparticles having an average particle size of 14 nm.

Optionally, the preparing of the superhydrophobic dispersion containing silica nanoparticles includes:

placing 2.4g of silica nanoparticles into 100ml of an anhydrous ethanol solution, thereby forming a mixed solution;

magnetically stirring the mixed solution at a speed of 500 revolutions per minute for 1 hour to obtain a stirred mixed solution;

performing ultrasonic dispersion on the stirred mixed solution for 10 minutes to obtain the superhydrophobic dispersion liquid containing the silicon dioxide nanoparticles.

Optionally, the soaking time is at least 1 minute; the air drying time is at least 2 hours.

The application also provides a super-hydrophobic liquid-solid contact friction nano-generator which is prepared by adopting the preparation method of the super-hydrophobic liquid-solid contact friction nano-generator.

Optionally, the superhydrophobic liquid-solid contact friction nanogenerator comprises:

a base;

a superhydrophobic dispersion layer disposed on one face of the base, the superhydrophobic dispersion layer including silica nanoparticles.

The application also provides an umbrella, the umbrella includes:

the umbrella cloth is characterized by comprising umbrella cloth, wherein one surface of the umbrella cloth is a rain surface;

the super-hydrophobic liquid-solid contact friction nano-generator is the super-hydrophobic liquid-solid contact friction nano-generator, the super-hydrophobic liquid-solid contact friction nano-generator is installed on the rain surface, and the super-hydrophobic liquid-solid contact friction nano-generator is configured to generate current in a matching mode with liquid falling on the super-hydrophobic liquid-solid contact friction nano-generator.

Optionally, the number of the superhydrophobic liquid-solid contact friction nanogenerators is at least 7, and the number of the electrodes in each superhydrophobic liquid-solid contact friction nanogenerator is at least 40.

The application also provides a drainage bottle, the drainage bottle includes: a bottle body; the polyvinylidene fluoride substrate is obliquely arranged inside the bottle body;

the super-hydrophobic liquid-solid contact friction nano generator is the super-hydrophobic liquid-solid contact friction nano generator, the super-hydrophobic liquid-solid contact friction nano generator is installed on the polyvinylidene fluoride substrate, and the polyvinylidene fluoride substrate is configured to be matched with liquid entering from the drainage bottle and falling on the super-hydrophobic liquid-solid contact friction nano generator to generate current.

Optionally, a liquid inlet is arranged on the bottle body, and the liquid enters from the liquid inlet and falls on the super-hydrophobic liquid-solid contact friction nano-generator;

and an included angle is formed between the polyvinylidene fluoride substrate and a virtual line segment of the motion track of the liquid which enters from the liquid inlet and falls onto the super-hydrophobic liquid-solid contact friction nano generator.

Optionally, the included angle is 20 °.

Optionally, the distance between the polyvinylidene fluoride substrate and the liquid inlet is at least 2 CM.

Optionally, the number of electrodes in the superhydrophobic liquid-solid contact friction nanogenerator is at least 6.

The present application also provides a tubular drop counter, comprising: a silicone tube; the super-hydrophobic liquid-solid contact friction nano-generator is the super-hydrophobic liquid-solid contact friction nano-generator, the super-hydrophobic liquid-solid contact friction nano-generator is arranged on the inner wall of the silicone tube, and liquid entering the silicone tube and passing through the super-hydrophobic liquid-solid contact friction nano-generator is matched to generate current.

Optionally, the silicone tube has a size of 7mm in inner diameter and 9mm in outer diameter.

The present application further provides an infusion set, the infusion set comprising:

the first infusion pipe section comprises a first infusion pipe liquid inlet end and a first infusion pipe liquid outlet end;

the tubular liquid drop counter is the tubular liquid drop counter, and one end of a silicone tube of the liquid drop counter is communicated with the liquid outlet end of the first infusion tube section.

Optionally, one end of the droplet counter connected with the liquid outlet end extends towards the other end of the droplet counter in an inclined manner.

Optionally, the angle of inclination is 20 degrees.

Optionally, the infusion set further comprises:

a stopper piercer, one end of the stopper piercer being configured to communicate with a liquid inlet end of the first infusion tube section;

one end of the second infusion pipe section is communicated with the other end of the silicone tube of the liquid drop counter;

and the dropping funnel is communicated with the other end of the second infusion pipe section.

The present application further provides a raindrop energy capture device, the raindrop energy capture device includes: the super-hydrophobic liquid-solid contact friction nano-generator is the super-hydrophobic liquid-solid contact friction nano-generator.

Advantageous effects

The super-hydrophobic liquid-solid contact friction nano-generator is simple in preparation method and environment-friendly, and has flexibility, viscosity and high energy conversion efficiency and sensitivity. The energy capture device can be used as an energy capture device, can successfully design the umbrella with the self-generating function to capture the raindrop energy, and has potential application value in other aspects such as roof raindrop energy capture and street lamp raindrop energy capture. Because of high sensitivity, the sensor can be well applied to biomedical monitoring as a liquid drop contact sensor, for example, a drainage bottle liquid drop sensor can monitor drainage operation in real time and provide valuable data for smoothly completing the drainage operation; the designed tubular drop counter can sensitively monitor the passing of the drops, so that the designed intelligent intravenous infusion tube and blood transfusion tube can detect the speed of infusion or blood transfusion in real time, and can provide an alarm prompt function when the infusion or blood transfusion is finished by combining an infinite transmission technology, thereby reducing the worry of patients and the workload of medical workers.

Drawings

FIG. 1 is a schematic flow diagram of a method for preparing an ultra-hydrophobic liquid-solid contact friction nanogenerator according to the application;

FIG. 2 is a schematic structural diagram of an ultra-hydrophobic liquid-solid contact friction nanogenerator according to the application;

FIG. 3 is a surface electron microscope image of the superhydrophobic surface of the superhydrophobic friction nanogenerator shown in FIG. 2;

FIG. 4 is a cross-sectional electron microscope image of the superhydrophobic surface of the superhydrophobic friction nano-generator shown in FIG. 2;

FIG. 5 is a schematic diagram showing the wettability of the friction generator surface without and after super-hydrophobic treatment for six solutions, wherein a is without super-hydrophobic treatment;

fig. 6 is a comparative reference diagram showing the rolling of blood droplets on the surface of the super-hydrophobic friction nanogenerator. The super-hydrophobic friction nano-generator is more pictorially explained to have strong repulsion effect on blood.

The comparison shows that the contact angles of the surface subjected to the super-hydrophobic treatment to six solutions (ultrapure water, PBS, 0.1M HCL, 0.1M NaOH, artificial urine and blood) are all larger than 150 degrees, which shows that the hydrophobic property of the surface of the friction nano-generator is greatly improved after the super-hydrophobic treatment, and the super-hydrophobic friction nano-generator is successfully prepared;

FIG. 7 is a schematic structural diagram of an ultrahydrophobic liquid-solid contact friction nanogenerator according to the application;

FIG. 8 is a schematic structural view of the umbrella of the present application;

FIG. 9 is a schematic structural view of a drainage bottle of the present application;

FIG. 10 is a schematic structural view of a drop counter of the present application;

FIG. 11 is a schematic view of a partial structure of the intelligent infusion set of the present application;

fig. 12 is a graph of performance analysis of the superhydrophobic liquid-solid contact friction nanogenerator shown in fig. 2 of the present application.

Fig. 13 is a graph of data analysis of a simulation experiment for the superhydrophobic liquid-solid contact friction nanogenerator shown in fig. 2 of the application.

FIG. 14 is a rain drop energy characterization chart of the umbrella of FIG. 8 of the present application as rain drops fall;

FIG. 15 is a graph of performance analysis of the drainage bottle shown in FIG. 9 of the present application.

Fig. 16 is a graph of performance analysis of the drop counter shown in fig. 10 of the present application.

Fig. 17 is a performance analysis diagram of the intelligent infusion set shown in fig. 10 according to the present application.

Detailed Description

In order to make the implementation objects, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the drawings in the embodiments of the present application. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are a subset of the embodiments in the present application and not all embodiments in the present application. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present application and should not be construed as limiting the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application. Embodiments of the present application will be described in detail below with reference to the accompanying drawings.

In the description of the present application, it is to be understood that the terms "central," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner and are not to be considered limiting of the scope of the present application.

The preparation method of the super-hydrophobic liquid-solid contact friction nano-generator shown in figure 1 comprises the following steps:

step 101: preparing an electrode plate, wherein the preparation of the electrode plate comprises the step of shearing a copper foil adhesive tape into the electrode plate with an inter-finger structure;

step 102: manufacturing a substrate, wherein the manufacturing of the substrate comprises the step of alternately sticking two electrode plates between two layers of double-sided adhesive tapes to obtain the substrate of the friction nano generator with a sandwich structure

Step 103: preparing a super-hydrophobic dispersion liquid containing silicon dioxide nano-particles;

step 104: soaking a substrate into the super-hydrophobic dispersion liquid to obtain the substrate attached with the silicon dioxide nano-particles;

step 105: and (3) air-drying the substrate attached with the silicon dioxide nano particles to obtain the super-hydrophobic liquid-solid contact friction nano generator.

This application is through adopting silicon dioxide to receive vexed granule basement for the super hydrophobic liquid-solid contact friction nanogenerator through this application preparation can all have superstrong repulsion effect with multiple solution (ultrapure water, strong acid, alkali, phosphate buffer solution, artificial urine and blood), can not cause liquid such as blood to adhere to on the basement, and specially adapted need produce the electric current many promptly and do not want the adnexed condition of liquid again.

Referring to fig. 1, in the present embodiment, a copper foil tape is cut into electrode pads having an inter-digital structure, thereby obtaining two electrode pads; two electrode slices are pasted in the middle of the double-layer double-sided adhesive tape, wherein one surface of one layer of double-sided adhesive tape, which is far away from the electrode slices, is provided with sticky viscosity, so that the substrate is formed (when the double-sided adhesive tape is infiltrated, the protective film, which is positioned on one side of the electrode slices, of the double-sided adhesive tape, so that the silicon dioxide nano particles are fully attached to the surface of the double-sided adhesive tape, namely the surface with sticky viscosity is formed, the protective film, which is positioned on the other side of the motor and is far away from one surface of the electrode slices, is torn when the double-sided adhesive tape is specifically used, and is used for being pasted on articles or devices needing to be adsorbed, such.

In this embodiment, the copper foil tape is a double-conductive copper foil tape, and the thickness of the copper foil is 0.056 mm.

In this embodiment, the electrode sheet electrodes have a width of 7mm, and the base electrodes are spaced apart by a distance of 2 mm.

In this example, the preparation of the superhydrophobic dispersion containing silica nanoparticles includes:

placing the silica nanoparticles into an anhydrous ethanol solution, thereby forming a mixed solution;

magnetically stirring the mixed solution to obtain a stirred mixed solution;

and carrying out ultrasonic dispersion on the stirred mixed solution so as to obtain the super-hydrophobic dispersion liquid containing the silicon dioxide nano particles.

In this example, the silica nanoparticles are hydrophobic fumed silica nanoparticles having an average particle size of 14 nm.

In one embodiment, making a superhydrophobic dispersion containing silica nanoparticles includes:

placing 2.4g of silica nanoparticles into 100ml of an anhydrous ethanol solution, thereby forming a mixed solution;

magnetically stirring the mixed solution at a speed of 500 revolutions per minute for 1 hour to obtain a stirred mixed solution;

performing ultrasonic dispersion on the stirred mixed solution for 10 minutes to obtain the superhydrophobic dispersion liquid containing the silicon dioxide nanoparticles.

In this example, the soaking time is at least 1 minute; the air drying time is at least 2 hours.

The application also provides a super-hydrophobic liquid-solid contact friction nano-generator which is prepared by adopting the preparation method of the super-hydrophobic liquid-solid contact friction nano-generator.

Referring to fig. 7, in the present embodiment, the superhydrophobic-solid contact friction nanogenerator 1 includes: a base and a super-hydrophobic dispersion liquid layer 12 disposed on one surface of the base, the super-hydrophobic dispersion liquid layer including silica nanoparticles.

Referring to fig. 7, in the present embodiment, the base includes an electrode sheet 11 and a double-sided tape 13.

The application also provides an umbrella, which comprises umbrella cloth and the super-hydrophobic liquid-solid contact friction nano generator, wherein one surface of the umbrella cloth is a rain surface, for example, a surface on which rain drops drop when raining; the super-hydrophobic liquid-solid contact friction nano-generator is arranged on a rain surface and is configured to generate current in cooperation with liquid falling on the super-hydrophobic liquid-solid contact friction nano-generator.

The umbrella designed based on the super-hydrophobic liquid-solid contact friction nano generator has the function of capturing the energy of raindrops in different rainfall amounts.

Referring to fig. 8, in the present embodiment, the number of the superhydrophobic-solid contact friction nanogenerators is at least 7, and the number of the electrodes in each superhydrophobic-solid contact friction nanogenerator is at least 40.

Specifically, in this embodiment, the functional umbrella capable of generating electricity is obtained by removing the double-sided adhesive tape protective film from 7 superhydrophobic friction nano-generators which include 40 copper electrodes and have a length of 38cm and a width of 8cm, adhering the generators to the umbrella cloth, and connecting the 7 superhydrophobic friction nano-generators in series by using a wire.

The application also provides a drainage bottle, referring to fig. 9, in the embodiment, the drainage bottle comprises a bottle body 5, a polyvinylidene fluoride base plate 6 and a super-hydrophobic liquid-solid contact friction nano generator, wherein the polyvinylidene fluoride base plate is obliquely arranged inside the bottle body; the super-hydrophobic liquid-solid contact friction nano-generator is the super-hydrophobic liquid-solid contact friction nano-generator, the super-hydrophobic liquid-solid contact friction nano-generator is installed on a polyvinylidene fluoride substrate, and the polyvinylidene fluoride substrate is configured to be matched with liquid entering from a drainage bottle and falling on the super-hydrophobic liquid-solid contact friction nano-generator to generate current.

The drainage bottle of this application is provided with the super hydrophobic liquid-solid contact friction nanometer generator of this application to can assist and realize intelligent accurate monitoring drainage operation and infusion operation clinically.

Referring to fig. 9, in this embodiment, a liquid inlet is provided on the bottle body, and liquid enters from the liquid inlet and falls on the super-hydrophobic liquid-solid contact friction nano-generator; an included angle is formed between the polyvinylidene fluoride substrate and a virtual line segment of a motion track of liquid which enters from the liquid inlet and falls onto the super-hydrophobic liquid-solid contact friction nano generator. Specifically, the included angle is 20 °.

In this example, the polyvinylidene fluoride-based plate is at a distance of at least 2CM from the liquid inlet.

In this embodiment, the number of electrodes in the super hydrophobic liquid-solid contact friction nano-generator is at least 6.

Referring to fig. 10, the present application further provides a droplet counter, the droplet counter includes a silicone tube 2, a superhydrophobic liquid-solid contact friction nano-generator 1, the superhydrophobic liquid-solid contact friction nano-generator is the superhydrophobic liquid-solid contact friction nano-generator as described above, the superhydrophobic liquid-solid contact friction nano-generator is disposed on an inner wall of the silicone tube, and a polyvinylidene fluoride substrate is configured to generate a current in cooperation with a liquid entering the silicone tube and passing through the superhydrophobic liquid-solid contact friction nano-generator.

In the present embodiment, the silicone tube has dimensions of 7mm inner diameter and 9mm outer diameter.

Referring to fig. 11, the present application further provides an infusion apparatus, which includes a first infusion tube section 3 and a drop counter, wherein the first infusion tube section 3 includes a first infusion tube liquid inlet end and a first infusion tube liquid outlet end; the liquid drop counter is the liquid drop counter, and one end of a silicone tube of the liquid drop counter is communicated with the liquid outlet end of the first liquid conveying tube section.

In this embodiment, one end of the drop counter connected to the liquid outlet end extends obliquely toward the other end of the drop counter.

In the present embodiment, the inclination angle is 20 degrees.

In the embodiment, the infusion apparatus further comprises a bottle stopper puncture outfit, a second infusion tube section 4 and a dropping funnel, wherein one end of the bottle stopper puncture outfit is configured to be communicated with the liquid inlet end of the first infusion tube section; one end of the second infusion tube section is communicated with the other end of the silicone tube of the liquid tube-shaped drop counter; the dropping funnel is communicated with the other end of the second transfusion pipe section.

The application also provides a raindrop energy capture device, and raindrop energy capture device includes: the super-hydrophobic liquid-solid contact friction nano-generator is the super-hydrophobic liquid-solid contact friction nano-generator.

The application also provides a liquid drop sensor, which comprises the super-hydrophobic liquid-solid contact friction nano-generator.

Referring to fig. 2, the adhesion of the silica nanoparticles of the present application to the double-sided adhesive layer is shown in fig. 2. The silica nanoparticles were uniformly and evenly distributed on the double-sided adhesive and formed a silica nanoparticle layer having a thickness of 25 microns.

Referring to fig. 3, by using six solutions, including ultrapure water, PBS, 0.1M HCL, 0.1M NaOH, artificial urine and blood, to perform a contact angle wettability test on the friction nanogenerator which is not subjected to superhydrophobic treatment and is subjected to superhydrophobic treatment, we can clearly see that the contact angle of the superhydrophobic water-solid contact friction nanogenerator of the present application to the liquid drops of the six solutions is obviously improved by more than 150 degrees, and has a super-strong repulsive action.

Referring to fig. 12, theoretical analysis and simulation verification are firstly performed on the electricity generation mechanism of the ultra-hydrophobic liquid-solid contact friction nano-generator, for example, in the c-theoretical analysis of fig. 12, from the view point of charge distribution, positive charges are accumulated on the surface of liquid drops due to the fact that contact between liquid drops and the solid surface can generate electricity through friction, negative charges are distributed on the solid surface, then different charges are distributed on copper electrodes through electrostatic induction, and the charges flow between electrode plates to generate current.

Along with the rolling of liquid drops on the surface of the super-hydrophobic friction nano generator, the charge distribution on the copper electrode can be correspondingly changed, and the current direction can be changed.

Simulation is a verification from the perspective of potential differences. Spherical droplets are first assumed to be positively charged and when the droplets approach an insulating superhydrophobic film, a responsive potential difference is created between the ground and all other geometries. As the droplets travel further along the membrane, larger and larger potential differences may be obtained due to charge transfer and triboelectric charging.

When the droplet travels to the middle between the two electrodes, a maximum potential difference will be reached between the two electrodes. In order to slide the droplet further to the film surface above the second copper electrode, the contact area of the droplet with the film is smaller than the droplet of the droplet rolling on the surface above the first copper electrode due to the repulsive force of the film surface.

Thus, the positive charge generated by the droplets is reduced, resulting in a reduction in the potential difference. Different volumes of water drops are dropped on a super-hydrophobic friction nano-generator with an inclination angle of 20 degrees with the ground from the same height, the difference of generated current and accumulated charge is observed,

as shown in e of fig. 12, it was found that as the volume of the water droplet increases, the peak value of the generated current and the accumulated charge also increase. The same volume of water drops are dropped on the super-hydrophobic friction nano-generator with an inclination angle of 20 degrees with the ground from different heights.

As shown in g of fig. 12, the difference between the current and the accumulated current is observed, and as a result, it is found that the current peak and the charge generated tend to increase with the increase in height.

In addition, as shown in fig. 13, through comparison of data of the super-hydrophobic friction nano generator experiment and the simulation experiment of the liquid drop impact level, it is found that the factor directly influencing the magnitude of the generated current peak is the size of the liquid drop and the surface wetting area. The larger the wetting area is, the more the triboelectric charge distribution is, and the larger the current peak is.

As shown in fig. 14, fig. 14 shows that the umbrella of the present application collects raindrop energy by simulating different rainfall for the self-generating functional umbrella, and as a result, as shown in b of fig. 14, the current generated by heavy rain and the accumulated charge are improved by about 4 times compared with that of light rain. As shown in d of fig. 14, it can be found by analyzing the current generated by the single raindrop that a number of current peak signals are generated. The umbrella has good sensitivity and power generation responsiveness.

As shown in fig. 15, fig. 15 is a graph of the test results of the drainage bottles of the present application. As can be seen from FIG. 15, the sensing sensitivity of the drainage bottle droplet sensor was measured by using droplets of six solutions, each of which was accurately monitored by the drainage bottle sensor as shown in FIG. 15a, including ultrapure water, strong acid, strong base, phosphate buffer, artificial urine, and blood. The drop sensor of the drainage vial can also be represented by the frequency of the current peaks when simulating drainage with blood of different flow rates, as shown in fig. 15 d. The drainage bottle droplet sensor has the capability of sensitively and accurately monitoring droplets, and can monitor the operation of drainage in real time, including the speed change, the drainage quantity and the like of the drainage.

As shown in fig. 16, fig. 16 is a performance characterization diagram of the tubular droplet counter of the present application, and the infusion set is characterized by using droplets of six solutions, and the droplets of the six solutions can be accurately monitored by the tubular droplet counter, including ultrapure water, strong acid, strong base, phosphate buffer, artificial urine and blood.

As shown in fig. 17, fig. 17 is a performance characterization diagram of the intelligent infusion apparatus, and the liquid drop counter in the infusion apparatus of the present application is installed at an angle of 20 ° to the vertical direction, so as to ensure sufficient contact between the liquid drop and the internal superhydrophobic liquid-solid contact friction nano-generator.

The transfusion speed is controlled by setting the position of the transfusion speed regulating valve by using the transfusion device to carry out simulated transfusion operation, as shown in the result of fig. 17, the intelligent transfusion tube can generate current peak signals with different frequencies according to different transfusion speeds, and the higher the transfusion speed is, the higher the current peak frequency is. When the position of the speed regulating valve is controlled to be at the bottom, the infusion speed is zero, and no current signal is output at the moment, so that the intelligent infusion tube has the capability of sensitively detecting the infusion speed, and can provide real-time data for infusion operation. The intelligent infusion tube integrates other devices, such as a smart phone and an alarm prompter, can help remind patients and medical staff of the progress of infusion operation, and relieves the anxiety of the patients in infusion and the workload of the medical staff.

Although the invention has been described in detail hereinabove with respect to a general description and specific embodiments thereof, it will be apparent to those skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.