299results about "Cellulose coatings" patented technology

The invention discloses a cellulose coated diaphragm and a preparation method thereof in the field of lithium ion batteries, the diaphragm comprises alpha-cellulose pulp, a cellulose grafted phenylboronic acid-co-oligomeric ethylene oxide copolymer, a thermal response star zwitterionic polymer and nano aluminum oxide, and an N-methylmorpholine-N-oxide aqueous solution is adopted as a solvent system. The preparation method comprises the following steps: firstly synthesizing a cellulose grafted copolymer with dynamic borate bonds through atom transfer radical polymerization, then preparing a star polymer with thermal response arms and zwitter-ion terminals by taking cyclodextrin as a core, and finally mixing all the components to prepare coating slurry. And the composite diaphragm is prepared through the processes of coating, phase conversion, ultraviolet curing and drying. The diaphragm combines the thermal stability and lyophilic property of cellulose, forms a dynamic self-adaptive interface layer through the synergistic effect of two functional compounds, has the advantages of active safety protection, dendritic crystal inhibition, long cycle life and the like, and remarkably improves the comprehensive performance of the lithium ion battery.

The invention relates to a coating, in particular to a radiation refrigeration heat insulation coating and a preparation method thereof, and the radiation refrigeration coating comprises a water-based emulsion, a reflective inorganic filler, a radiation inorganic filler water-based emulsion, a radiation inorganic filler, functional nanocellulose and a functional additive. The radiation refrigeration coating can reflect energy of a sunlight wave band (0.3-2.5 [mu] m) and perform radiation heat exchange with the universe by utilizing an atmospheric window (8-13 [mu] m), and the cooling effect lower than the environment temperature can be achieved. In high-temperature weather in summer, the surface temperature of a building can be effectively reduced, and the use frequency of an air conditioner is reduced, so that energy consumption is remarkably reduced. Meanwhile, by adding heat insulation type inorganic filler (such as hollow glass beads, silicon dioxide aerogel and the like), the heat conductivity of the coating is reduced, the loss of heat in a building is reduced, and the heating energy consumption in winter is reduced. Due to the dual functions, the coating can achieve an energy-saving effect throughout the year, and the environment-friendly concept of energy conservation and carbon reduction is met.

The present invention provides nanocellulose that has an average fiber width of 1-200 nm and is an oxide of a cellulosic raw material, which does not contain an N-oxyl compound in a cellulose fiber, has excellent dispersion stability in a dispersion medium, and uses hypochlorous acid or a salt thereof, the nanocellulose not substantially containing an N-oxyl compound and having a zeta potential of at most -30 mV.

The invention relates to a coral cellulose / photo-thermal material composite antifouling coating and a gradient curing method thereof, and aims to solve the problems of environmental pollution, short antifouling period, lack of environmental response capability and the like in the traditional ship antifouling technology. Through the composite design of the coral cellulose and the photo-thermal material and in combination with a layered curing process, long-acting antifouling and mechanical property strengthening of the coating in a marine environment are realized.

The invention relates to the technical field of wind power generation materials, in particular to a rubber insulating material and a sheath material for wind power generation. The rubber insulating material for wind power generation comprises an insulating inner layer, an interface transition layer and a sheath outer layer, in the rubber insulating material for wind power generation and the sheath material, through double mechanisms of chemical coupling of a plant-based diluent and nano-cellulose and physical adsorption of expanded graphite, the insulating inner layer has excellent heat resistance and mechanical strength on the basis of keeping the heat resistance and mechanical strength of the material; the processing viscosity of the epoxy resin system is reduced; the outer layer of the sheath improves the mechanical property and salt mist erosion resistance of the material through the chemical anchoring of plant fibers and resin and the barrier effect of the nanosheet layer; meanwhile, the natural latex-cellulose nanocrystalline composite network of the interface transition layer strengthens the interface compatibility of the insulating layer and the sheath layer, and avoids the interlayer separation risk, thereby improving the reliability and service life of the material in an extreme environment of offshore wind power equipment.

The invention discloses a metal non-stick coating and a preparation method. The coating comprises 20-30 parts of low-melting-point glass powder, 10-20 parts of a two-dimensional material, 10-20 parts of a spherical material, 10-20 parts of a rod-like material, 5-10 parts of a high-temperature pigment and 20-30 parts of a water-based carrier. The metal non-stick coating is sintered on the base material at low temperature, and the low-melting-point glass powder is used as a cladding sealing film forming substance and is cladded on the metal base material by adopting a sintering process, so that the hardness of the coating is higher than that of metal, the coating is not afraid of being scratched by metal kitchenware and hard food materials, and the metal non-stick coating is not prone to being scratched by the metal kitchenware and the hard food materials during conventional operations such as decocting and stir-frying. The coating is not prone to falling off or oxygenolysis, the concave-convex lotus leaf structure with the microscopic surface is formed through cooperation of the two-dimensional material, the spherical material, the rod-shaped material, the high-temperature pigment, the water-based carrier and other materials, and when food is cooked, the concave-convex lotus leaf structure can reduce contact between the food and the bottom of the pan, the Leidenfrost effect is formed, and the food is prevented from sticking to the pan.

The present application relates to an electron beam curable bio-based coating composition and a pre-coated article made therefrom. The electron beam curable bio-based coating composition comprises at least one urethane acrylate, at least one bio-based acrylate monomer, at least one nanocellulose, and optionally a first additional additive wherein the nanocellulose has a specific surface area of at least 200 m2 / g and has an aspect ratio of at least 20. The pre-coated article includes a substrate having at least one major surface; the transition layer is arranged on at least part of the main surface of the base material; and at least one electron beam curing topcoat disposed on at least a portion of the surface of the transition layer wherein the electron beam curing topcoat is formed from the electron beam curable bio-based coating composition according to the present invention.

A protective film forming agent which is used for forming a protective film on a surface of a semiconductor wafer during dicing the semiconductor wafer, which is capable of forming a protective film which allows formation of a processed groove having excellent straightness by laser irradiation, and which has excellent fluorine shielding property, and a method of manufacturing a semiconductor chip using the protective film forming agent. The protective film forming agent contains a water-soluble resin (A), a light absorbing agent (B), and a solvent(S). The water-soluble resin (A) contains a water-soluble resin (A1) having an aromatic ring and a water-soluble group. The water-soluble resin (A1) may contain a benzene ring as an aromatic monocycle.

The invention discloses a preparation method of photo-thermal anti-icing / deicing slurry, the photo-thermal anti-icing / deicing slurry and application. The preparation method comprises the following steps: in the presence of a basic catalyst, mixing an aqueous dispersion of nanocellulose with a polymer-based photo-thermal material monomer for reaction to obtain a first mixed solution; and mixing the first mixed solution with a water repellent agent solution, carrying out a grafting reaction, and carrying out centrifugal washing to obtain the photo-thermal anti-icing / deicing slurry. After the slurry prepared by the method is used for forming a coating, the problem that an anti-freezing surface is difficult to maintain an anti-freezing state in a long-time use state or a low-temperature and high-humidity environment can be well solved, and in addition, the coating can realize anti-icing and deicing, water and water proofing, thermal management, ultraviolet radiation prevention, photo-thermal sterilization, oil-water separation and the like of a solid surface.

A composition, a method for manufacturing the composition, and products containing the composition are disclosed. The present composition is a dispersion comprising a plant-based wax and a fibrillated cellulose component. Additionally, a solid wet product and a use of the said composition is disclosed.

The invention relates to the technical field of diaphragms for lithium ion batteries, in particular to nano coating liquid, a preparation method of the nano coating liquid and a nano coating diaphragm. The nano coating liquid provided by the invention is prepared from the following components in parts by mass: 20 to 95 parts of large-particle inorganic powder, 5 to 80 parts of small-particle inorganic powder, 5 to 30 parts of nano cellulose, 1 to 5 parts of a solution type binder, 1 to 5 parts of an emulsion type binder, 0 to 1 part of a wetting agent and 200 to 800 parts of a polar solvent, the D50 of the large-particle inorganic powder is 0.1 to 3 [mu] m; and the D50 of the small-particle inorganic powder is 10 to 150 nm. The diaphragm prepared from the nano coating liquid provided by the invention has good heat resistance on the premise of keeping good liquid absorption capacity and air permeability.

The invention discloses a sodium-ion battery diaphragm, a preparation method thereof and a sodium-ion battery, and belongs to the technical field of sodium-ion batteries, the sodium-ion battery diaphragm comprises a glass fiber diaphragm and a modified coating coated on one side of the glass fiber diaphragm; the modified coating faces the negative electrode side of the sodium ion battery; the modified coating is prepared from the following raw materials in parts by mass: 10 parts of chitosan, 0.4 to 0.6 part of cellulose nanofiber, 0.02 to 0.04 part of cross-linking agent and 90 to 150 parts of solvent. A large number of polar groups in the chitosan can adsorb sodium ions through electrostatic interaction, so that the difference of local current density is reduced, and the growth of sodium dendrites is effectively inhibited; the cellulose nanofiber is used as a rigid filler and is compounded with the chitosan, so that a compact and uniform network structure can be formed, the mechanical strength of the diaphragm is improved, penetration of sodium dendrites is directly hindered, the pore size of the diaphragm is adjusted, uniform transmission of ions is facilitated, and the cycling stability of the sodium ion battery is improved.

The invention relates to the technical field of super-hydrophobic anti-icing coatings, and discloses a photo-thermal super-hydrophobic anti-icing coating and a preparation method and application thereof.The photo-thermal super-hydrophobic anti-icing coating is prepared from nanocellulose, MXene, dopamine and octadecylamine, and the mass ratio of nanocellulose to MXene is (0.3-1.7): 1; the mass ratio of the dopamine to the MXene is 1: (0.3 to 1.7). A coating prepared from the photo-thermal super-hydrophobic anti-icing coating has good photo-thermal conversion capacity, has good compatibility with various substrates and can be applied to icing prevention in cold weather.

The invention relates to the technical field of electromagnetic shielding materials, and particularly discloses an electromagnetic shielding composite material with active and passive infrared stealth functions and a preparation method thereof. The composite material comprises an electromagnetic wave reflecting layer and a plurality of electromagnetic wave absorbing layers. The electromagnetic wave reflecting layer is made of silver-plated bacterial cellulose, and efficient reflection of electromagnetic waves is achieved through high conductivity of the silver-plated bacterial cellulose. The electromagnetic wave absorbing layer is formed by compounding bacterial cellulose, multi-walled carbon nanotubes and core-shell magnetic nanoparticles, and the content of the multi-walled carbon nanotubes is gradually decreased and the content of the core-shell magnetic nanoparticles is gradually increased from the position close to the electromagnetic wave reflecting layer to the outside, so that a gradient structure is formed; the gradient design can improve surface impedance matching, promote electromagnetic waves to enter the material, and enhance electromagnetic loss through an interlayer multiple reflection-absorption process. The material disclosed by the invention has the functions of efficient electromagnetic shielding and active and passive infrared stealth.

The present invention is directed to a process for manufacturing a film or coating comprising high amounts of cellulosic nanomaterial. According to the present invention, a screen printing press, such as a rotary screen press, is used to create a film or coating comprising cellulosic nanomaterial. One benefit of the present process is that the suspension used in the printing process has a high dry content and high viscosity, thereby facilitating the process for manufacturing a film or coating comprising high amounts of cellulosic nanomaterial.

According to the anti-ultraviolet aging coating for the outer wall of the pipeline, the outer wall of the pipeline is coated with modified paint to form the anti-ultraviolet aging coating, and the coating thickness is 1-2 mm; the modified paint comprises the following raw materials in parts by weight: 35-40 parts of epoxy resin, 4-7 parts of an auxiliary agent, 8-12 parts of a curing agent and 30-35 parts of an acetone solvent. According to the anti-ultraviolet aging coating disclosed by the invention, the epoxy resin, the auxiliary agent, the curing agent, the reinforcing agent based on nanocellulose modification and the modifier are blended, and the modified paint prepared by matching and coordinating the raw materials is brushed on the outer wall of the pipeline, so that the prepared coating product has excellent impact resistance and adhesive force performance; the performance of the product is coordinated and balanced, and the anti-ultraviolet stability effect of the product is remarkable.

According to an example aspect of the present invention, there is provided an intumescent fire retardant composition comprising: an acid source comprising or consisting of ammonium phytate; and a carbon source selected from the group consisting of: carbohydrates, chemically modified lignins, tannin, and any combinations and derivatives thereof.

Provided is a water-soluble sheet-like coloring material in which sheets are less likely to stick to each other, have appropriate self-standing property and flexibility, and can be quickly brought into a uniform state when dissolved in water.A water-soluble sheet-like coloring material including a film-forming water-soluble polymer; a dissolution accelerator; a colorant; and a moisture-retaining agent.

The application discloses a kind of green hydrophobic light-weight bio-based composite material of wood structure imitation and preparation method thereof, comprising the following steps: plant fiber is treated by low-alkali cooking pretreatment, standby;Starch is mixed with water, then 75-95 ℃ is added with ultrasonic vibration stirring 1-2h, then adding mesophilic alpha amylase is carried out enzymolysis, after enzymolysis is completed, oxidation treatment is carried out, then urea is added to starch, stirring reaction 1-2h, finally foaming agent is added, uniformly stirred, and the foaming hot melt modified starch is prepared;Wood pulp fiber, lignin, pretreated plant fiber and foaming hot melt modified starch are mixed according to proportion, and mixed slurry is obtained;The mixed slurry is injected in injection molding machine, and the intermediate bubble layer is prepared;A layer of waterproof film containing lignin nanocellulose slurry and polylactic acid mixed solution is sprayed on the surface of the intermediate bubble layer, and the dense waterproof layer is prepared, that is, obtained.

The application discloses a mural reinforcing protective agent and a preparation method and application thereof, belongs to the technical field of cultural relic restoration, and can solve the technical problems that existing mural reinforcing materials cannot reinforce the lower layer structure of ancient murals and are prone to being attached to the surface of murals to cause the whitening of the surface pigments. The mural reinforcing protective agent comprises a bacterial cellulose carrier and Ba(OH)2 nanoparticles loaded on the bacterial cellulose carrier in situ. The application plays a reinforcing role on the lower layer structure of murals, realizes deep reinforcement of ancient murals, improves the protection effect, stability and durability, and the surface of the mural will not be whitened.

This invention provides a high-transmittance LED diffuser plate and its preparation process, belonging to the field of light diffusion materials technology. The process includes the following steps: Cerium nitrate hexahydrate, anhydrous ethanol, and triethanolamine are mixed and stirred, the supernatant is removed by centrifugation, and water, methyl methacrylate, potassium persulfate, vinyltrimethoxysilane, and 3-mercaptopropyltrimethoxysilane are added. The mixture is heated and stirred, filtered, and vacuum dried to obtain light-diffusing particles. Nanocellulose is immersed in a zinc chloride aqueous solution, then immersed in anhydrous ethanol, washed, and dried to obtain pretreated nanocellulose. The pretreated nanocellulose is added to a cyclic olefin copolymer solution and ultrasonically mixed to obtain a mixed solution. Polycarbonate and light-diffusing particles are melt-blended, extruded, stretched into strips, cooled and shaped, cut, the mixed solution is dripped in, spin-coated, and dried to obtain a high-transmittance LED diffuser plate. This invention achieves both light diffusion effect and high transmittance while maintaining a certain degree of haze.

The application discloses a kind of pH-sensitive spectrum response film online monitoring methods based on chemical crosslinking.It is technical solution: first polyvinyl alcohol is dissolved in water, then with cellulose solution, pH indicator is mixed according to certain proportion, prepare pH-sensitive original solution, then it is drop-coated to amino glass substrate and incubated, prepare pH-sensitive substrate.Using etching or molding method to make cover piece with microchannel, it is bonded after being treated with oxygen plasma with pH-sensitive substrate, obtain pH microfluidic chip.And it is used in combination with self-built integrated pH sensing system.Self-built integrated pH sensing system includes light source (1), pH sensing chip (2), spectrometer or colorimeter (3) and host computer (4).This pH microfluidic chip online monitoring system based on chemical crosslinking has long service life, wide pH response range, strong anti-interference ability, good stability and other advantages, and can realize online, real-time monitoring of pH.

The invention discloses an automobile ornament softwood surface coating, a preparation method and application, and relates to the technical field of automobile coatings, the automobile ornament softwood surface coating comprises the following specific components: a primer, a brush-off layer, a seal paint and a finish paint. Aiming at the structural defects and practical application requirements of the cork material, a multifunctional synergistic system of primer, brush-off layer, seal paint and finish paint is constructed; the nano flake mica and the nano montmorillonite form a labyrinth type water-blocking structure in the primer, the hyperbranched polyester and the nano cellulose construct a stable color wiping and developing system, and the organic silicon sealing layer is compounded with the hollow microbeads and the nano zinc oxide to realize light-weight heat insulation protection. And nano aluminum oxide and fluorine modified wax powder in the finish paint jointly enhance the wear resistance and scratch resistance of the surface, so that the overall weather resistance, adhesive force, damp heat resistance, aging resistance and mechanical stability of the cork are effectively improved on the premise of not sacrificing the natural touch of the cork. And a complete set of technical support and an industrialization foundation are provided for large-scale application of the cork material in automobile high-end ornaments.

The invention relates to the technical field of antirust coatings, in particular to a water-based environment-friendly antirust coating for a metal surface and a preparation method of the water-based environment-friendly antirust coating. The water-based environment-friendly antirust coating is prepared from the following raw materials in parts by weight: 35 to 45 parts of a novel water-based polyurethane solution, 13 to 17 parts of novel nano cellulose, 15 to 20 parts of an antirust pigment, 3 to 6 parts of silicon dioxide, 1.5 to 2.5 parts of a dispersing agent, 0.5 to 1.5 parts of a defoaming agent, 1.5 to 2.5 parts of a thickening agent, 2 to 4 parts of diethylene glycol butyl ether and 15 to 20 parts of deionized water. The water-based environment-friendly anti-rust coating is an environment-friendly high-performance coating, metal protection is achieved through the synergistic effect of physical barriers and chemical protection, a compact and continuous organic coating is formed on the metal surface, moisture, oxygen and corrosive media are effectively isolated, an electrochemical corrosion path is blocked, anti-rust pigment migrates to a metal interface in the coating, and the anti-rust effect is good. A chemical reaction with an iron matrix is carried out to generate an indissolvable passive film, so that the cathode reaction is inhibited and the corrosion rate is reduced.

The utility model provides a glucose biosensor, and relates to the technical field of medical detection. The glucose biosensor comprises a sensing module, a circuit board and a charging wire; a microprocessor, a rechargeable battery and a charging connection structure are arranged on the circuit board; the charging connection structure comprises a first composition part and a second composition part; the first composition part is fixedly arranged on the circuit board and is electrically connected with the rechargeable battery; the second component part is rotatably and electrically connected with the first component part; one end of the charging wire is provided with a connecting part, and the other end is provided with a seat body; the connecting part is detachably and electrically connected with the second composition part; and a solar charging panel and a wireless charging coil are arranged on the seat body. The glucose biosensor has multiple charging modes, when a user goes out and the like, charging of the glucose biosensor can be achieved through the solar charging function or the reverse charging function of equipment such as a mobile phone, and therefore the endurance of the glucose biosensor is guaranteed.

The present invention provides a coating composition comprising a homogenised dispersion of regenerated cellulose in water, wherein the regenerated cellulose comprises both amorphous and crystalline cellulose.

The embodiment of the invention provides colorful wall art paint for an inner wall and a preparation method of the colorful wall art paint. The colorful wall art paint for the inner wall comprises the following components in percentage by mass: 48%-52% of basic paint, 28%-32% of a dispensing solution and 18%-22% of a continuous phase, wherein the basic paint is prepared from the following components in parts by weight: 1 to 1.1 parts of first cellulose, 1.8 to 2.0 parts of tourmaline powder, 1.6 to 1.7 parts of first solvent, 10 to 10.2 parts of pigment and filler, 24 to 26 parts of pure acrylic emulsion, 7 to 8 parts of 10 percent protective rubber powder solution, 0.15 to 0.2 part of dispersing agent, 0.7 to 0.8 part of first sterilizing agent, 0.4 to 0.5 part of first defoaming agent, 0.1 to 0.15 part of pH value regulator and 50 to 52 parts of deionized water; the dispensing glue solution is prepared from the following components in parts by weight: 0.1 to 0.15 part of second cellulose, 0.3 to 0.35 part of second bactericide, 40 to 45 parts of 10 percent protective glue powder solution and 54.5 to 59.6 parts of deionized water. According to the colorful wall art paint for the interior wall and the preparation method of the colorful wall art paint, provided by the embodiment of the invention, anions can be released while a decoration effect is achieved, so that air is effectively purified.

The invention discloses biomass-based water-solid plastic as well as a preparation method, a water-solid forming method and application thereof, and belongs to the field of plastics, the water-solid plastic is plastic which can be subjected to self-deformation forming only by using water without using a mold, and the obtained shape can be kept stable and is not influenced by water environment and humidity change. The water-solid forming method mainly comprises the following steps: pre-designing the shape of the biomass-based water-solid plastic, performing water treatment, and performing drying treatment after deformation. The water-curable plastic can be automatically deformed into various one-dimensional, two-dimensional or three-dimensional shapes, no mold is needed, expensive and complex instruments and equipment are not needed, and the method is a plastic forming processing method which is simple to operate, low in energy consumption, low in cost, green, environment-friendly and carbon-reducing. The biomass-based water-solid plastic is prepared from biomass which is rich in reserves, low in cost, sustainable to regenerate, biodegradable and good in biocompatibility, has good mechanical properties and can be widely applied to various fields.

The present invention provides materials and composite materials comprising layer (A) comprising afirst polysaccharide which has been derivatised to comprise fatty acid ester moieties. Also provided are substrates coated with the material and composite material, and processes for preparing the material, composite material and coated substrate.

The invention discloses a coal dust suppressant as well as a preparation method and application thereof. The coal dust suppressant is composed of a component A and a component B which are stored separately, the component A is in a liquid state, the component B is in a solid state, and the mass ratio of the component A to the component B is (1-5): 1; the component A is composed of 10-60 parts by mass of polyacrylic resin and 0.1-3 parts by mass of a stabilizer, and the component B is composed of 3-10 parts by mass of a pigment, 4-12 parts by mass of fiber particles and 0.5-3 parts by mass of a thickener; wherein the mass of the fiber particles is 1-2 times that of the pigment; the length of the fiber particles is 0.2-2.0 mm, and the particle size of the pigment is 800-1200 meshes. The dust suppressant disclosed by the invention realizes a direct color development effect on the surface of coal for the first time. Meanwhile, the dust suppressant has excellent adhesion and dust suppression performance, and the wind erosion rate of the dust suppressant under blowing erosion at the wind speed of 30 m / s and 40 m / s is smaller than 1.0.