35results about How to "Easy to roll off" patented technology

The invention relates to a method for preparing a pollution preventing self-cleaning polyvinylidene fluoride (PVDF) film and a product thereof. The method comprises the following processes: (1) PVDF film preparation; and (2) PVDF film processing with alkali liquor, including an alkali-water solution processing process and an alkali-alcohol solution processing process, wherein the alkali-water solution processing process comprises the following steps: soaking the PVDF film in alkali-water solution with the mass concentration of 20-40 percent; processing at 60-80 DEG C for 2-3 hours and then taking out to wash with water; drying and obtaining the PVDF film; the alkali-alcohol solution processing process comprises the following steps: soaking the PVDF film in alkali-alcohol solution with themass concentration of 2-10 percent; processing at 25-40 DEG C for 3-5 minutes and then taking the film out; washing with water and drying; soaking the PVDF film in proper solution to react at 25-60 DEG C for 3-10 minutes; then taking out and fully washing with water; drying and then obtaining the PVDF film; (3) decorating the surface of the PVDF film by organosilane and preparing the pollution preventing self-cleaning polyvinylidene fluoride film. The pollution preventing self-cleaning PVDF film product is prepared by the method.

The invention discloses a titanium alloy super hydrophobic-super hydrophilic surface. Multiple sub arrays are distributed on the surface of a titanium alloy. Multiple super hydrophobic areas and multiple super hydrophilic areas in each sub array are arranged alternately in a wedge shape or a triangular shape, and super hydrophilic gathering areas are distributed between the sub arrays. The super hydrophobic surface has the good super hydrophobic performance, drop adhesion is very little, and rolling is extremely easy; drops can be adsorbed by the super hydrophilic areas, the drops at the top ends of the super hydrophilic areas in the wedge shape or the triangular shape can rapidly move towards the bottom of the wedge shape or the triangular shape under the drive of Plath pressure generatedby the wedge shape or the triangular shape, the super hydrophilic areas arranged alternately with the super hydrophilic areas can repel directional transportation of the drops, under the synergisticeffect of the super hydrophobic areas and the super hydrophilic areas, the condensation small drops can be gathered into the hydrophilic gathering area constantly, high-concentration-ratio self-driving water gathering is achieved, disengaging of the drops is accelerated, and therefore the condensation heat transfer efficiency is improved. The invention provides a preparing method and application of the titanium alloy super hydrophobic-super hydrophilic surface.

The invention discloses a preparation method of a super-hydrophobic aluminum surface with a freezing prevention performance. The method comprises the following steps: firstly, an abrasive paper is used for polishing a pure aluminum surface to remove oil stains and an oxide layer on an aluminum base surface; then, hydrochloric acid solution is adopted to etch the aluminum base surface to etch out arough structure on the aluminum surface; and finally, stearic acid anhydrous ethanol solution is used for processing to reduce the aluminum base surface energy to obtain the super-hydrophobic aluminum surface. Reagents adopted by the preparation method are common reagents and easy to prepare; such laboratory common devices as ultrasonic cleaners, electronic scales, drying boxes, water bath stirrers and the like are only needed; the method is simple and feasible; the production cost is greatly reduced; the average contact angle of the prepared aluminum base surface is more than 150 degrees; the surface adhesion is weak; water drops are easy to roll down from the surface; the excellent freezing prevention performance is achieved; and the unexpected technical effects are achieved.

The invention discloses a medical operating platform for baby bathing. The medical operating platform comprises an operation counter, a water tank, a cleaning and caring safety cabin, a baby accommodating bed, rotating shafts, a control panel, weighing sensors, and a water outlet, wherein the water tank is arranged at the top of the operation counter, the cleaning and caring safety cabin is hollow and provided with an opening in the top, the baby accommodating bed is arranged inside the cleaning and caring safety cabin and has a water draining function, and the water outlet is formed in the bottom of the cleaning and caring safety cabin; the cleaning and caring safety cabin is connected with the inner wall of the water tank through the two rotating shafts which are symmetric to each other; the control panel is arranged on the outer surface of the operation counter or the cleaning and caring safety cabin; the weighing sensors are arranged on the rotating shaft and in contact with the baby accommodating bed. The operating platform combines the functions of a traditional weighing platform and a bathing platform, increases space utilization rate, is small in occupied area, reduces the baby moving frequency and greatly reduces workload.

The invention relates to a preparation method of a hydrophobic micro-nano structure aluminum surface. The method comprises the following steps: firstly, pre-treating an aluminum sheet and polishing by abrasive paper; carrying out ultrasonic washing through acetone and distilled water; drying the aluminum sheet for later use; putting the pre-treated aluminum sheet into hydrochloric acid and etching; then taking out the aluminum sheet and carrying out the ultrasonic washing through absolute ethyl alcohol and the distilled water and drying; then putting the aluminum sheet into a copper chloride solution and etching; carrying out the ultrasonic washing through the absolute ethyl alcohol and the distilled water and drying; finally, carrying out low surface energy treatment on the surface, and putting the etched aluminum sheet into a stearic acid absolute ethyl alcohol solution and modifying the surface in a constant-temperature water bath; taking out the aluminum sheet and putting the aluminum sheet into a drying box; drying and curing to prepare a surface with a hydrophobic effect. The preparation method of the hydrophobic micro-nano structure aluminum surface has the advantages that a treatment method is simple and a contact angle reaches 146 degrees.

The invention discloses a high strength and energy saving flexible bridge frame, which includes a bridge frame shell. The bridge frame shell is externally provided with a protective coating formed by paint, and the paint is composed of polyurethane, epoxy resin, acrylic resin, polytetrafluoroethylene, polyethylene glycol, butanediol, linseed oil, alumina, ceramic powder, silicon powder, cerium oxide, a solvent, a curing agent, aluminum potassium sulfate and sodium fluosilicate. Due to adoption of polyurethane, epoxy resin, acrylic resin and polytetrafluoroethylene by the invention, the high crosslinking density paint can be formed through mutual synergistic effects of the resins. The paint has extremely high surface hardness, excellent flexibility, bending resistance and flexibility, and excellent physical and mechanical properties, thus being able to avoid stress concentration. Therefore, the film formed by the paint has very good tensile strength, tear strength and stone impact resistance, thereby ensuring the service life of the bridge frame.

The invention relates to a preparation method of a high-hydrophobicity and low-adhesion aluminum surface. The method includes the steps that a hydrochloric acid solution and a copper chloride solution are adopted for two-step etching, a micro-nano composite structure is prepared on an aluminum surface, then a stearic acid ethanol solution is used for treatment, surface energy is reduced, and the aluminum surface with a hydrophobic effect is obtained. The treatment method is simple, easy to carry out and convenient to operate, and the contact angle can reach 150 degrees to the maximum degree.

The invention makes public a kind of high temperature separating material which can prevent dregs from adhering the dregs pot. The material includes 30~50 units of dolomite, 30~45 units of bentonite, 18~28 units of clay, 1.0~2.5 units of trimer sodium phosphate, 0.5~3.0 units of carboxymethyl cellulose and 135~220 units of water in proportion of weight. All water-fast particles' size should not lesser than 180 eyes. And about 0.5~5 units of black lead can be joined in the material. The material has good property of high temperature, dregs proof, and anti-strip. It can prevent the pot from being dregs adhered effectively, so it can make sure turning dregs automatically and high velocity of the pot. Adhering degree of the material is moderate, and no deposition and delamination in 72 hours. The material has good working performance.

The invention provides a novel coiled material tail end positioning and conveying device. A positioning assembly is used for blocking and avoiding a coiled material which rolls to a directional roller; the positioning assembly blocks the coiled material for stopping the coiled material on the roller surface of the directional roller, so that the tail end of the coiled material is rotated and regulated to a preset first direction along with the directional roller; when the direction of the tail end of the coiled material reaches the preset first direction, the positioning assembly avoids the coiled material, so that the coiled material rolls away from the directional roller and stops on a conveying channel, and therefore, the tail-end direction of the coiled material is in a needed second direction, and a tail searching and positioning mechanism is suitable for various coiled materials of different coil diameters; when the coil diameters of the coiled materials fluctuate, paper tail action regulation still can be accurately regulated, so that the directions of the tail ends of the coiled materials conveyed out through the conveying channel are unified, and therefore, corresponding processing processes are conveniently performed on the coiled materials at a downstream station.

The invention discloses an automatic cleaning finish for exterior walls, and a preparation method thereof. The finish comprises, by weight, 30-60 parts of water, 0.1-0.5 parts of an antifoaming agent, 0.4-1.2 parts of an antifreeze agent, 30-60 parts of an emulsion, 0.8-2.0 parts of a film forming assistant, 0.1-0.4 parts of an antiseptic and 0.01-0.5 parts of an antistatic agent. The preparation method comprises the following steps: weighing above finish components according to above weight proportions; adding water to a finish preparation kettle; sequentially adding the emulsion, the antifoaming agent, the antifreeze agent and the film forming assistant while stirring; uniformly stirring above added components, and adding the antiseptic and the antistatic agent; and stirring above obtained components until uniformity to obtain the finished finish. The finish has exterior wall protection and decoration effects, has the advantages of excellent stain resistance, weatherability, low surface energy, high antistatic property and high light transmittance, can realize automatic cleaning of building exterior walls by using wind and rainwater in natural environment, solves the problems of easy pollution, easy efflorescence, color change and spalling of surfaces of buildings, and prolongs the service life of building exterior wall coatings.

The invention discloses a zinc alloy superhydrophobic-superhydrophilic surface. A plurality of sub-arrays are distributed on the surface of a zinc alloy; a plurality of superhydrophobic areas and a plurality of superhydrophilic areas in each of the sub-arrays can be alternately arranged in a wedge or triangular shape; and a superhydrophilic collecting area is distributed between every two sub-arrays. The superhydrophobic surface disclosed by the invention has the excellent superhydrophobic performance, the adhesiveness of liquid droplets is very small and the liquid droplets are extremely andeasily rolled off; however, the superhydrophilic areas can absorb the liquid droplets, the liquid droplets formed in the top ends of the wedged or triangular superhydrophilic areas are driven by Plathpressure produced by the wedge or triangular shape and can be automatically and quickly moved toward the bottom part of the wedge or triangular shape, the superhydrophobic areas which alternate withthe superhydrophilic areas reject oriented transportation of the liquid droplets; and due to a mutual coordination effect of the superhydrophobic areas and the superhydrophilic areas, small condensedliquid droplets are continuously collected to a hydrophilic collecting area, so that self-driven water collection with the high concentration ratio can be realized, and dropping of the liquid dropletsis quickened, and thus, the condensation and heat transfer efficiency can be accelerated. The invention provides a preparation method and application of the zinc alloy superhydrophobic-superhydrophilic surface.

The invention discloses a harpoon convenient in capturing loaches. The harpoon comprises a long wooden handle, a sleeve, a connection piece and a harpoon head. The harpoon has the main characteristics that the harpoon head comprises double harpoon heads forming an n-shape, wherein the top end in the double harpoon heads forming the n-shape is provided with two rows of steel needles which are evenly distributed, and the lower end of each steel needle is provided with a barb; the base parts of the steel needles are provided with a square rubber plate; the steel needles upwards pass through the upper part of the rubber plate, are inserted into a round groove in the top end in the double harpoon heads forming the n-shape, and are glued and fixed by strong adhesive, and the square rubber plate can vertically move on the steel needles; the connection piece comprises a cylinder, wherein the lower end of the cylinder is welded and fixed with the middle of the top end of the double harpoon heads forming the n-shape; outer threads on the upper part of the cylinder are cooperatively connected with a threaded hole in the bottom end of the sleeve. According to the harpoon, a capture success rate can be obviously improved, and the damage to a loach individual can be reduced.

A special hydrophobic coating for an aluminum strip is a coating coated on a metal plate. The special hydrophobic coating is produced by adopting a routine production technology of coatings, and is characterized in that the special hydrophobic coating comprises 25-35wt% of a water-soluble acrylic resin, 5-15wt% of amino resin for coatings, 1-4wt% of water-soluble epoxy resin, 0.5-2.0wt% of water-soluble silicone oil, 0.5-1.5wt% of dimethyl ethanolamine, 0.5-1.5wt% of ethylene glycol monobutylether, 0.1-0.4wt% of dinonylnaphthalenedisulphonic acid, 0.3-0.8wt% of NP-40 polyoxyethylene nonyl phenyl ether, and the balance purified water. The surface of the aluminum strip is coated with the coating obtained in the invention through a roller coating technology to form the hydrophobic aluminum strip, and use and examination results show that compared with common aluminum strips in the prior art, the coated aluminum strip obtained in the invention has a good hydrophobic function, the contact angle of water drops on the surface of the aluminum strip is 155-165DEG, and the water drops do not adhere with each other, and highly likely tumble; and the hydrophobic aluminum strip can be used in a refrigeration system in order to improve the heat exchange effect, reduce energy consumption and prolong the service life.

The invention discloses a steel moving arm for moving and transporting a cooling bed steel billet. The steel moving arm comprises a fixed bracket, a motor, a transporting main shaft, a wheel axle and a steel arm main body; the transporting main shaft is driven by the motor; the transporting main shaft comprises a conveying part and a transmission part; the transporting main shaft drives the wheel axle through the engagement of a gear; a cam is also arranged on the wheel axle; a material pushing rod is also mounted on the cam; one end of the steel arm main body is positioned above a conveying part; the other end of the steel arm main body is in hinged connection with the material pushing rod; the cam, the material pushing rod and the steel arm main body form a cam mechanism. The steel moving arm for moving and transporting the cooling bed steel billet has the beneficial effects that overlarge occupied area caused by arranging the motor on the conventional steel moving arm additionally is avoided by driving the steel moving arm to move through the transporting main shaft, and meanwhile, the transporting time is shortened; therefore, the transporting efficiency is improved.

The invention discloses a double-contradiction top touch type electronic measurement and control instrument rigid-flexible reversal protection device, which comprises a tester protection shell, a self-feedback rigid-flexible reversal bearing device, a fixing assembly and a double-contradiction different-channel fluid top touch automatic control device, and is characterized in that the double-contradiction different-channel fluid top touch automatic control device is movably arranged in the tester protection shell; the self-feedback rigid-flexible reversing bearing device is movably arranged in the tester protection shell, the fixing assembly is movably arranged on the tester protection shell, and the fixing assembly is movably connected with the self-feedback rigid-flexible reversing bearing device and the double-contradiction different-channel fluid jacking self-control device. The invention belongs to the technical field of electronic measurement and control instrument protection, and particularly relates to a double-contradiction top contact type electronic measurement and control instrument rigid-flexible reversal protection device which is externally and flexibly used for bearing rigid impact and providing an impact buffer space and internally used for protection through fluid pressure impact and strong support. The technical effect of self-positioning of the gaps is achieved, and seamless attaching cleaning is achieved for different gaps.

The invention belongs to the technical field of electromagnetic coils, and particularly relates to an electromagnetic coil which comprises a left arc-shaped winding rod, a right arc-shaped winding rodand a mounting bottom plate. The end parts of the left arc-shaped winding rod and the right arc-shaped winding rod are spliced with each other, clamping blocks fixedly arranged at the two ends of theright arc-shaped winding rod are inserted into the clamping grooves at the end parts of the left arc-shaped winding rod, and arc-shaped supporting plates are movably arranged on the outer walls, thefront sides and the rear sides of the left arc-shaped winding rod and the right arc-shaped winding rod through gas control devices. According to the present invention, the end of a wire is clamped inthe threading groove in a lower pressing plate, then a coil can be fixed to the upper surface of the mounting bottom plate, compared with a traditional four-point dispensing fixing mode, on one hand,fixing can be completed without dispensing equipment, then the cost can be saved, and on the other hand, when the coil is damaged or burnt out, the coil can be detached from the mounting bottom plate,so that the left arc-shaped winding rod and the right arc-shaped winding rod can be separated, and the wire can be easily detached.

A livestock hay rolling conveying device, comprising a vertical plate, a chute is provided on the side wall of the vertical plate, a slider is provided in the chute, and arc-shaped card bodies are provided on the vertical plates on both sides of the chute , also includes two support arms, one end of the two support arms is connected with the slider through a shaft, the other ends of the two support arms are respectively hinged with an arc-shaped card body, and the two arc-shaped card bodies are connected by a spring. The top of the plate is provided with a shaft tube, the shaft tube is provided with a shaft rod, one end of the shaft rod is provided with a handle, the other end of the shaft rod is provided with a crank, and a connecting rod is also included. The slider is hinged, the other end of the connecting rod is hinged with the crank, and a bottom plate is provided, the bottom plate is provided with a support plate, and a groove is provided in the middle of the top of the support plate, and a groove is connected to the groove through a rotating shaft. A support rod, one end of the support rod is connected with the vertical plate, the other end of the support rod is provided with a waist-shaped groove, and a pulley is arranged in the waist-shaped groove. It has the advantage of loading and unloading the grass roller through manual control components.

The invention relates to a device in the technical field of tipping paper production, in particular to a tipping paper coiling roller placing rack. The tipping paper coiling roller placing rack comprises a placing rack body; an arc placing plate with a groove structure is arranged on the placing rack body; a first lifting device is arranged below the placing plate, can lift the placing plate, and is a cylinder or a pedal lifting part; a hinged extension plate is arranged on the side surface of the placing plate; the extension plate is ascended to form a slope; the extension plate is put down to the side surface of the placing rack body; a hinged support rod for supporting the placing plate is arranged between the lower surface of the extension plate and the placing plate; and a second lifting device is arranged on the side surface of the placing plate, and can be lifted to incline the placing plate to one side. The tipping paper coiling roller placing rack has the advantage of convenience to use.

The invention relates to the technical field of part machining and treatment, and particularly relates to a spraying device and a spraying method. The spraying device is used for spraying low-surface-energy paint to the inner wall of a water pipe and comprises a storage tank used for storing the low-surface-energy paint and a spraying pipe communicating with the storage tank; the water pipe is used for being arranged outside the spraying pipe in a sleeving manner. Spraying holes are formed in the spraying pipe; the low-surface-energy paint in the storage tank can enter the spraying pipe and is sprayed into the inner wall of the water pipe through the spraying holes; and the spraying device is used in the spraying method. According to the spraying device and the spraying method, the technical problem that in the prior art, a water pipe of a steam box is prone to being blocked due to incrustation accumulation is solved.

The invention discloses a steel moving arm for moving and transporting a cooling bed steel billet. The steel moving arm comprises a fixed bracket, a motor, a transporting main shaft, a wheel axle and a steel arm main body; the transporting main shaft is driven by the motor; the transporting main shaft comprises a conveying part and a transmission part; the transporting main shaft drives the wheel axle through the engagement of a gear; a cam is also arranged on the wheel axle; a material pushing rod is also mounted on the cam; one end of the steel arm main body is positioned above a conveying part; the other end of the steel arm main body is in hinged connection with the material pushing rod; the cam, the material pushing rod and the steel arm main body form a cam mechanism. The steel moving arm for moving and transporting the cooling bed steel billet has the beneficial effects that overlarge occupied area caused by arranging the motor on the conventional steel moving arm additionally is avoided by driving the steel moving arm to move through the transporting main shaft, and meanwhile, the transporting time is shortened; therefore, the transporting efficiency is improved.

The invention discloses a waterproof device for a charging interface of a new energy vehicle, which comprises a main body of a connecting device and a main body of a waterproof shell. The main body of the connecting device is connected to the main body of the waterproof shell through a fixing mechanism. , and a "circular" notch is opened on the front of the fixed connecting plate, a first slot is opened on the left side of the main body of the connecting device, and a second slot is opened on the fixed connecting plate to the left of the first slot, so A power mechanism is arranged in the second slot. The invention ensures that the dust and moisture in the external environment enter the box body during charging, which will affect the use of the socket, can isolate the external rainwater, and at the same time ensure that water can also be prevented from entering the interface during use, improving Improve the use effect of the device, protect the device, improve the practicability of the device, and ensure the integrity of the device.

The invention, which relates to the technical field of mechanization engineering of agriculture and animal husbandry, discloses a movable round bale resilience test bench mainly comprising a bottom frame, a rotating frame, a turning frame, a side bracket, load cells and guiding plates. The rotating frame is installed on the bottom frame in a rotating manner and is used for rolling a round bale onthe ground. The two guiding plates are arranged at the two sides of the rotating frame. The turning frame includes a left turning frame and a right turning frame that are arranged on the bottom frameand are located at the two sides of the round bale; and a first group of load cells and a second group of load cells are respectively disposed at the left turning frame and the right turning frame. The side bracket is arranged on the bottom frame and is provided with a third group of load cells that is arranged above the round bale. According to the invention, the changing relation of the resilience of grass materials with time after rolling can be obtained; and obtained parameters can be used for further optimization of the structure and performance parameters of the round bale machine and the mechanical quality requirements of the bale rope and the wrapping film.

The invention discloses a polyimide airgel with lotus leaf effect, a preparation method and application thereof. The polyimide airgel with lotus leaf effect includes: a porous network skeleton composed of polyimide, and a plurality of polyimide island structures distributed in the porous network skeleton; and the The contact angle between the polyimide airgel and water is ≥150°. The preparation method includes: uniformly mixing the first polyamic acid solution and the second polyamic acid solution to form a mixed system, adding a chemical dehydrating agent to the mixed system, and then standing to form a polyimide gel, and then After aging, solvent replacement and drying, the polyimide airgel with lotus leaf effect was obtained. The polyimide airgel with lotus leaf effect of the present invention has superhydrophobicity, water resistance, high and low temperature resistance, large specific surface area, low density, low thermal conductivity and other properties, and has great application prospects.

The invention belongs to the field of surface engineering, and discloses a super-hydrophobic glaze layer, an inorganic ceramic membrane containing the super-hydrophobic glaze layer, a preparation method and application. By forming a pure inorganic super-hydrophobic protective coating, the super-hydrophobic coating not only has excellent hydrophobic performance and pollution prevention, but also has good flashover prevention performance under different weather conditions of frost, snow and the like. The inorganic super-hydrophobic coating prepared by the invention realizes zero addition of harmful low-surface-energy substances such as fluoride and the like, and the weather resistance and the mechanical stability of the glaze layer are improved to a certain extent by doping inorganic non-metallic material hexagonal boron nitride / cubic boron nitride. An h-BN / c-BN doped composite glaze layer is prepared by simulating a biological surface microstructure, so that a large contact angle and a small rolling angle are realized, and water drops are easy to roll off on the surface. The inorganic ceramic membrane can be applied to various surfaces of ceramics, glass, metal and the like, is simple in preparation process, has good economic benefits, and is suitable for market popularization and application.

The invention relates to a preparation method of an antifouling self-cleaning polyvinylidene fluoride film and a product thereof. The preparation method includes the following processes: (1). Preparation of PVDF membrane; (2). Lye treatment of PVDF membrane: including two processes of alkali-water solution treatment and alkali-alcohol solution treatment: the alkali-water solution treatment process is: PVDF The membrane is immersed in an alkali-water solution with a mass concentration of 20-40%, treated at 60-80°C for 2-3 hours, taken out, washed with water, and dried; the alkali-alcohol solution treatment process is as follows: firstly soak the PVDF membrane in In an alkali-alcohol solution with a mass concentration of 2-10%, treat it at 25-40°C for 3-5min, take out the membrane, wash it with water, and dry it; then soak the PVDF membrane in an appropriate solution and react at 25-60°C for 3- 10min, then take it out, fully wash with water, and dry it; (3). Use organic silane to modify the surface of PVDF membrane to obtain an antifouling and self-cleaning polyvinylidene fluoride membrane. The antifouling self-cleaning PVDF membrane product is prepared by the preparation method described in the invention.

The invention discloses a dual-contradictory top-touch type electronic measurement and control instrument rigid-flexible reversal protection device, which includes a tester protective case, a self-feedback rigid-flexible reversal support device, a fixing component, and a dual-contradictory top-touch automatic control device for fluids in different channels , the dual-contradictory fluid top-touch automatic control device of different channels is movable in the protective shell of the tester; the self-feedback rigid-flexible reversal support device is movable in the protective shell of the tester, and the fixed component is movable in the tester On the protective shell of the instrument, the fixed component is movably connected with the self-feedback rigid-flexible reversal support device and the double-contradictory fluid top-touch automatic control device of different channels. The invention belongs to the technical field of protection of electronic measurement and control instruments, and specifically refers to a dual-contradiction top-touch electronic measurement and control instrument rigid-flexible reversal protection device, which externally accepts rigid impacts with flexibility and provides impact buffer space, and internally uses fluid pressure impacts to provide strong protection. The support is used for protection; the technical effect of self-positioning of the gap is realized, and the seamless fit and cleaning of different gaps are realized.

The invention provides a TPU film with a high hydrophobic angle and a preparation method thereof. The preparation raw materials of the TPU film include the following components in parts by weight: 30-50 parts of toluene diisocyanate, 20-40 parts of polyester polyol, formaldehyde 4-6 parts of hexafluorobutyl acrylate, 1-2 parts of octadecyl acrylate, 5-10 parts of polyvinylidene fluoride, 3-8 parts of chain extender, and 1-3 parts of catalyst; TPU film provided by the invention , through the use of hexafluorobutyl methacrylate and octadecyl acrylate, the fluorine-containing groups are regularly arranged on the polymerization surface, and a stable film is formed after reaction, and the formed coating has low surface free energy; further mixing Polyvinylidene fluoride with good insulation makes it easier for water droplets to roll off the surface of the film. The combination with fluorine-containing groups improves the hydrophobic angle of the film. The hydrophobic angle can reach 121°-124°, and the hydrophobicity is excellent. Application bright future.

The invention discloses a bamboo stick capable of conveniently stripping grilled vegetable skewers. The bamboo stick comprises a stick body, a handheld part and a stick head of an integral structure, wherein the diameter of the handheld part is larger than the diameter of the stick body. The bamboo stick disclosed by the invention is mainly characterized in that a circular retainer ring is movably arranged at the outer diameter end of the bottom of the stick body in a sleeving manner; the outer diameter of the circular retainer ring is larger than the diameter of the handheld part; the circular retainer ring has the outer diameter of 10-20mm and the thickness size of 2-5mm and is made of phyllostachys pubescens chips. According to the invention, grilled vegetables can be conveniently stripped from the stick body of the bamboo stick without chopsticks, and the bamboo stick is novel in structure and high in practicability.