32results about "Cellulose coatings" patented technology

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.

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.

In some embodiments, a dispensable suspension composition can include a liquid carrier, silver (Ag) particles, silver chloride (AgCl) particles, and cellulose nanofibers. The dispensable suspension composition can be used to effectively fabricate electrodes via microdispensing. Such Ag / AgCl electrodes can be used as a reference electrode or an indicating electrode in electrochemical sensing systems. Accordingly, Ag / AgCl electrodes formed from the dispensable suspension and sensors using the same are provided, as well as methods of fabricating Ag / AgCl electrodes using the dispensable suspension. Other aspects including the dispensable Ag / AgCl suspension composition are disclosed.

The present invention relates to a self-cooling nanoceramic additive in the form of an aqueous dispersion comprising emissive and reflective minerals. Said additive of the present invention is used to produce self-cooling architectural paints (single-layer coatings). The specific composition of the additive efficiently reflects sunlight, reduces heat absorption, emits thermal radiation, improves the durability of protected surfaces, reduces power consumption for cooling, and provides a formulation that is compatible with various solvents and materials, thereby facilitating its application on architectural coatings.

This application relates to an anti-icing coating, its preparation method, and its application, belonging to the field of protective coating technology. The anti-icing coating comprises a superhydrophobic self-cleaning coating and a hydrophobic and oleophobic layer stacked together. The superhydrophobic self-cleaning coating includes first SiO2 nanoparticles and fluorosilane. The hydrophobic and oleophobic layer includes second SiO2 nanoparticles, nanocellulose, chitosan nanoparticles, and a binder. The use of natural polymer materials such as nanocellulose and chitosan nanoparticles in the hydrophobic and oleophobic layer results in lower cost and better environmental friendliness. The superhydrophobic self-cleaning coating achieves superhydrophobic properties through the synergistic effect of a nano-dispersion system and a "papillary" micro-nano rough structure. The hydrophobic and oleophobic layer further enhances the coating's hydrophobic and oleophobic properties and surface lubricity, significantly reducing the adhesion of ice to the coating surface.

The application belongs to the technical field of food packaging materials and surface modification, and discloses a full-biobased degradable super-hydrophobic composite coating as well as a preparation method and application thereof. The composite coating comprises a first coating, which is a dry solidified layer of a composite dispersion liquid containing corn protein, inorganic nanoparticles and bacterial cellulose; and a second coating formed on the surface of the first coating, which is a solid film layer after volatilization of a solvent of a hot wax solution. The core component of the application is derived from natural biomass, which fundamentally eliminates the use of traditional paper cup plastic film coating or fluorine-containing chemicals, and realizes full-biobased, rapid degradable and environment-friendly coating. The static water contact angle of the obtained coating is greater than 150°, and the rolling angle is less than 10°, which reaches the super-hydrophobic standard. The simple solution blending and coating process provides a reliable and highly industrialized solution for the development of green paper cup products, and has a wide application prospect.

The present invention relates to microfibrous cellulose capable of exhibiting an excellent dispersibility stability and an excellent coating suitability when added to paint.To this end, the present invention provides fibrous cellulose having a fiber width of 1,000 nm or less and containing an ionic substituent. An amount of the ionic substituent in the fibrous cellulose is 0.10 mmol / g or more and 1.50 mmol / g or less. A polymerization degree of the fibrous cellulose is 150 or more and 515 or less. When the fibrous cellulose is dispersed in a dispersion solvent containing water and isopropanol to obtain a dispersion fluid having a 7:3 mass ratio of water and isopropanol and a viscosity of 2,500 mPa·s at 23° C., and the dispersion fluid is stirred under predetermined stirring conditions, a viscosity change rate falls within ±50% as calculated by the following formula:viscosity change rate (%)=(viscosity after stirring−viscosity before stirring) / viscosity before stirring×100 .

The application relates to the technical field of lithium batteries, and discloses a composite lithium battery diaphragm coating slurry, a preparation method thereof and a battery. The composite lithium battery diaphragm coating slurry comprises a substrate photocuring layer and a functional layer arranged in sequence from bottom to top, the slurry of the substrate photocuring layer is composed of a first solvent, a solubilizer, a photocuring agent, ceramic powder, solid electrolyte powder and an adhesive at a mass ratio of 20:10:5:8-10:3-5:1, and the slurry of the functional layer is composed of a second solvent, a solubilizer, a photocuring agent, nanofiber crystals, polyvinylidene fluoride-hexafluoropropylene copolymer and an adhesive at a mass ratio of 30:1:2-5:3:8-15:2-10. Through the technical scheme, the problems of poor thermal stability, insufficient mechanical strength and poor electrochemical performance of the lithium battery diaphragm in the related art are solved.

A clear coating composition includes a hydroxyl group-containing acrylic resin (a), a hydroxyl group-containing polyester resin (b), a polyol compound (c) other than the hydroxyl group-containing acrylic resin (a) and the hydroxyl group-containing polyester resin (b), a polyisocyanate compound (d), organic dispersed particles (e), a cellulose derivative (f), and an organic amine catalyst (g) having an amidine group. The hydroxyl group-containing acrylic resin (a) has a hydroxyl value of 90 mg KOH / g to 190 mg KOH / g, a weight average molecular weight of 4000 to 6000, and a glass transition temperature of 15°C to 100°C. The polyol compound (c) has a hydroxyl value of more than 200 mg KOH / g to 1000 mg KOH / g and a molecular weight of 100 to 1000. The cellulose derivative (f) contains at least one selected from the group consisting of cellulose ethers and cellulose esters and has a solids concentration of 50 mass% or more.

To provide an agent which has excellent handleability at outdoor and other sites and can inhibit wet powders, e.g., water-containing earth, from adhering to hard surfaces.SOLUTION: An adhesion inhibitor for wet powders is obtained by mixing the following components (A), (B), and (C): (A) an organic compound that is liquid at 25°C and 1 atm; (B) anion-modified cellulose fibers; and (C) a hydrophobic compound having a cationic functional group (the hydrophobic compound being not one falling under the component (A)).SELECTED DRAWING: None

A method for manufacturing an MFC film from a microfibrillated cellulose (MFC) dispersion, comprising subjecting a wet MFC film (F) on a support to at least one drying step to form a dried MFC film (F'), and measuring at least one parameter indicative of the concentration of at least one component such as an additive or an impurity. i) a task of adjusting at least one manufacturing parameter that affects the concentration of the at least one component according to the at least one parameter, and ii) a task of providing a chemical map of the dried MFC film (F') including a plurality of data points each associated with a respective position on the dried MFC film (F'), by recording the at least one parameter for each of the data points. performing at least one of the above A method comprising the above.

The present invention relates generally to packaging and coating materials and, more specifically, to a composition comprising a nanocellulose material, its use as a coating and a process for coating a surface with said composition. The composition of the present invention comprises a nanocellulose material, a cellulose pulp fiber having an average fiber length less than 2 mm, and water.

This application discloses a polymer composite membrane for composite current collectors and its preparation method, relating to the field of composite current collector technology for lithium-ion batteries. The polymer composite membrane includes a polymer base membrane and a coating layer disposed on at least one surface of the polymer base membrane. By mass percentage, the coating slurry of the coating layer consists of the following components: 85-94% nanofibers, 5-10% binder, and 0.5-5% curing agent. The curing agent undergoes a polymerization reaction with the nanofibers and binder, guiding the nanofibers and binder to form a three-dimensional cross-linked network, reducing the porosity of the polymer membrane, effectively preventing electrolyte penetration and corrosion, and improving heat resistance. Simultaneously, it eliminates the weak interface layer of the base membrane, and the polar groups of the cross-linked network strengthen the intermolecular forces with the substrate, improving peel strength and effectively preventing coating layer detachment, ensuring reliable interlayer bonding.

The invention relates to a sprayable aqueous acoustic damping composition comprising a polymer, a filler, and a water-soluble cellulose compound or a water-soluble starch, wherein, the filler comprises a filler (i) with an average particle size (d50 particle size) of about 7-18 μm and a filler (ii) with an average particle size (d50 particle size) of about 2-5 μm.

The application discloses a kind of multilayer composite self-adhesive label for food packaging and preparation method thereof, it is related to label material technical field, including base paper layer, adhesive layer, surface paper layer, the base paper layer selects the kraft paper coated with silicon oil, the side of surface paper layer away from adhesive layer is coated with polyvinyl alcohol coating, and adhesive layer uses acrylate adhesive.The polyvinyl alcohol coating is arranged on the surface paper layer of self-adhesive label in the application, realizes high barrier property, solves the problem that traditional label only has identification function without protection ability, solves the problem that traditional label is easily eroded by environment, improves the adaptability of label in high humidity environment.

A method of producing a microfibrillated cellulose, MFC, film from an MFC dispersion, comprises subjecting a wet MFC film on a support to at least one drying step to form a dry MFC film (F'), measuring at least one parameter indicative of the dry solids content in the wet MFC film (F) and / or in the dry MFC film (F') at at least two data points which are laterally spaced across at least a width of the MFC film (F, F'), and varying drying conditions of at least one of said at least one drying step across a width of the wet MFC film (F, F') in response to said parameter. There is also disclosed a device for producing MFC film, use of such device and an MFC film.

This invention belongs to the field of solid propellant ignition technology, specifically relating to a conductive ignition paint, its preparation method, and its application. The invention involves mixing carbon nanotubes and high-energy fuel using a microfluidic device to form a suspension, followed by a microwave-assisted complexation reaction with a metal complexing agent. This allows the carbon nanotubes and high-energy fuel to form a stable core-shell structure through metal ion bridging, synthesizing a carbon nanotube composite coated with fuel. This composite is then mixed with a nanofiber dispersion, forming a hierarchical porous gel system with a three-dimensional interpenetrating network. Finally, a nano-oxidant is added and ultrasonically dispersed uniformly within the cavities of the network structure. The conductive ignition paint is then obtained through a rotary evaporation process. This invention's conductive ignition paint possesses a unique three-dimensional interpenetrating network structure and hierarchical porous characteristics, maintaining high energy density while reducing sensitivity, ensuring stable energy transfer and controllable release, and significantly improving the reliability and safety of ignition.

The present invention relates to a method for manufacturing a cellular foam with surface treatment, the manufacturing method comprising the following steps: (a) a supplying step, for providing a cellular foam comprising a matrix defining air-filled cells, which matrix comprises (i) at least one cellulosic filler and (ii) at least one polysaccharide network, and (b) a surface treatment step, during which said cellular cell foam is exposed to a treatment medium comprising a polar solvent in which at least one phenolic compound is dissolved. The invention also deals with a cellular foam derived from said manufacturing method.

The application discloses a kind of mussel biomimetic enhanced nanocellulose composite antifouling coating and preparation method thereof, belong to marine antifouling material technical field.Preparation method includes: S1, preparation of zwitterionic cellulose nanofiber;S2, preparation of silanization modified polydopamine loaded nanosilver;S3, preparation of composite coating precursor solution;S4, coating and gradient solidification.The coating is zwitterionic cellulose nanofiber as matrix, compound hydroxyl-terminated polydimethylsiloxane and silanization modified polydopamine loaded nanosilver, through mussel biomimetic adhesion strengthens interfacial adhesion, relies on hydrophobic-hydrophilic interpenetrating network to improve anti-swelling performance, integrates hydration layer physical barrier, low surface energy fouling detachment and nanosilver broad-spectrum bactericidal function, realize synergistic efficient antifouling.The coating of the application has strong adhesion, excellent anti-swelling, durable and green antifouling effect, and can be widely applied to antifouling treatment of ships, offshore platforms, fishing nets and the like, and has important application value and market prospect.

The present disclosure relates to a modified extender and a process for its preparation. The modified extender of the present disclosure is used as a partial replacement of TiO2 in the coating composition thereby making the composition cost effective without affecting the properties. The present disclosure further provides a coating composition comprising the modified extender. Further, the coating composition of the present disclosure has excellent brightness and whiteness and has good opacity.

The present invention provides a clear coating composition that is highly solid and yields a coating film with good appearance and high physical properties. [Solution] The solution comprises a hydroxyl group-containing acrylic resin (a), a hydroxyl group-containing polyester resin (b), a polyol compound (c) other than the hydroxyl group-containing acrylic resin (a) and the hydroxyl group-containing polyester resin (b), a polyisocyanate compound (d), organic dispersed particles (e), a cellulose derivative (f), and an organic amine catalyst having an amidine group (g), wherein the hydroxyl group-containing acrylic resin (a) has a hydroxyl value of 90 mg KOH / g or more and 190 mg KOH / g or less. A clear coating composition wherein the weight-average molecular weight is 4000 or more and 6000 or less, the glass transition temperature is 15°C or more and 100°C or less, the polyol compound (c) has a hydroxyl value greater than 200 mgKOH / g and 1000 mgKOH / g or less, and a molecular weight of 100 or more and 1000 or less, and the cellulose derivative (f) contains at least one selected from the group consisting of cellulose ether and cellulose ester, and the solid content concentration is 50% by mass or more.

This invention provides a novel flame-retardant coating agent and flame-retardant sheet containing anionicly modified microfibrillary cellulose. The flame-retardant coating agent and flame-retardant sheet according to the embodiments contain anionicly modified microfibrillary cellulose with a number-average fiber width of 2 to 1000 nm, wherein the counterions of the anionic groups of the anionicly modified microfibrillary cellulose include metal ions.

A first aspect of the invention relates to a coated substrate, the substrate comprising or consisting of glass and / or metal, said substrate having a primary coating on at least one surface; and at least one, preferably removable, layer of nanocellulose on at least a part of said at least one surface of the substrate, on top of the primary coating. In a second aspect, the invention is directed to the use of nanocellulose as, preferably removable, protective coating on a surface of a substrate having a primary coating on at least one surface. A third aspect of the invention relates to a process for protecting a substrate, a fourth aspect is directed to an aqueous mixture comprising nanocellulose, preferably obtainable or obtained by the process of the second aspect of the invention, and a fifth aspect of the invention relates to an aqueous mixture comprising nanocellulose, further comprising (or being essentially free of) at least one binder or a reaction product of at least one binder and / or at least one filler.

To provide a material used for a carrier having a combination of desirable other characteristics such as inertness to one or a plurality of active ingredients, low toxicity and low combustibility in addition to favorable environmental characteristics.SOLUTION: A composition is provided comprising: (a) at least one active ingredient; and (b) a carrier comprising monochlorotrifluoropropene in an amount effective to at least partially solvate or at least partially emulsify the active ingredient. Also provided is a method of applying an active ingredient to a surface comprising: providing a composition comprising at least one active ingredient selected from the group consisting of coatings, binders, sealants, lubricants, pesticides, and herbicides; and a carrier comprising l-chloro - 3,3,3 - trifluoropropene in an amount effective to at least partially solvate or at least partially emulsify the active ingredient; applying the composition to a surface of a substrate; and removing the carrier from the active ingredient.SELECTED DRAWING: None

The application discloses a high-adhesion-resistance regenerated cellulose film and a preparation method thereof, and belongs to the technical field of regenerated cellulose film production, and comprises the following steps: viscose preparation, film regeneration, washing, desulfurization, bleaching, and obtaining a wet film after washing; the wet film is subjected to softening and anti-adhesion coating treatment; and the regenerated cellulose film is prepared through drying and humidity adjustment; the anti-adhesion agent used in the anti-adhesion coating treatment comprises a composition of one or more of modified starch suspension, cellulose micro-powder suspension and wax emulsion; the modified starch suspension is selected from any one of oxidized starch, hydroxypropyl starch, hydroxypropyl oxidized starch, acetylated starch and cationic starch; and the wax emulsion is selected from any one of palm wax emulsion, paraffin wax emulsion, PE wax emulsion, PP wax emulsion, Fischer-Tropsch wax emulsion and composite wax emulsion. In the application, the anti-adhesion agent is combined with the surface of the wet film, the adhesion effect is improved, and the generation of powder dropping is effectively avoided.

The present invention relates to a method for manufacturing a cellular foam with surface treatment, the manufacturing method comprising the following steps: (a) a supplying step, for providing a cellular foam comprising a matrix defining air-filled cells, which matrix comprises (i) at least one cellulosic filler and (ii) at least one polysaccharide network, and (b) a surface treatment step, during which said cellular foam is exposed to a treatment medium comprising a polar solvent in which at least one phenolic compound is dissolved. The invention also deals with a cellular foam derived from said manufacturing method.

The application provides a cortex display film for automobile interior and a preparation method thereof. The cortex display film is composed of a cortex base film layer, a display function layer and a surface function layer. The base film layer composed of waste leather fiber and thermoplastic elastomer has excellent flexibility and durability. The surface performance and anti-aging ability are improved through surface activation treatment and deposition modification of nano inorganic particles. The display function layer adopts a composite material of conductive polymer and two-dimensional transition metal carbon nitride nanosheet, which gives the film layer good electrical conductivity and display effect. The display film can realize multi-functional integrated applications such as touch display, environmental sensing and temperature regulation, and is suitable for automobile interior.

The present invention relates to a process for preparing a coating lacquer comprising the following steps: a) providing a natural hydrocolloid and a solvent, the solvent comprising or consisting of water, b) introducing, under stirring, the natural hydrocolloid into the solvent to obtain a pre-hydrolysis solution, the natural hydrocolloid having a concentration ≥ 13% by weight of the total weight of the pre-hydrolysis solution, c) reaching a temperature comprised between 40°C and 57°C, d) introducing a hydrocolloid-specific hydrolyzing enzyme to obtain a coating lacquer, wherein the coating lacquer has a natural hydrocolloid concentration ≥ 13% by weight of the total weight of the coating lacquer.

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 c

A stable slurry composition with enhanced barrier properties is provided. The slurry comprises materials with a density greater than 15 μm. 2 A composite material of pigments and microcrystalline cellulose with a surface area of ​​ / g BET and carboxymethyl cellulose. This slurry can be used to formulate barrier coatings, which are applied to the surface of paper or paperboard products to enhance and improve the barrier properties of the products.