106results about "Cellulose derivative coatings" patented technology

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 invention relates to an exposed high-temperature-resistant oxygen-carbon modified waterproof coating, and belongs to the technical field of coatings. The preparation method comprises the following steps: firstly, reacting amino on an amino silane coupling agent with 1, 3, 5-triazine-2, 4, 6-triacyl chloride to obtain a triazine silane coupling agent, then reacting diethoxysilane on the triazine silane coupling agent with hydroxyl on hydroxyethyl cellulose to convert the hydroxyl into hydrophobic and heat-resistant Si-O-C bonds, and thus obtaining the hydrophobic and heat-resistant hydroxyethyl cellulose. Meanwhile, the triazine ring with good thermal stability is utilized, so that the heat resistance and the water resistance of the hydroxyethyl cellulose are effectively improved. The modified cellulose has a large number of tertiary amino groups which can form hydrogen bonds with hydroxyl groups on the surfaces of kaolin, heavy calcium carbonate and rutile type titanium dioxide in the coating, so that the stability of the kaolin, the heavy calcium carbonate and the rutile type titanium dioxide in the coating is improved; in the drying process, a coating film with good compactness can be formed through a hydrogen bond and a molecular group embedding effect, so that the heat resistance, the water resistance and the weather resistance of the coating film are improved.

The present invention relates to a polarizing plate and an optical display including the polarizing plate. The polarizing plate includes a polarizer; and a first phase difference layer and a second phase difference layer sequentially stacked on the lower surface of the polarizer, wherein the first phase difference layer has a biaxiality (NZ) less than 0 at a wavelength of 550nm and is a non-liquid crystal layer, and the second phase difference layer has a biaxiality (NZ) greater than 1 at a wavelength of 550nm.

The invention discloses an environment-friendly wear-resistant coating for railways and a preparation method thereof, and belongs to the technical field of coating preparation, the environment-friendly wear-resistant coating for railways comprises the following raw materials by mass: 45-60% of epoxy-organosilicon hybrid resin, 2-5% of modified nanocellulose, 8-10% of a water-based curing agent, and the balance of a solvent. Aiming at the technical problems of insufficient wear resistance, poor dynamic fatigue resistance, high VOCs (volatile organic compounds) content and the like of a railway facility coating in high mechanical stress, extreme climate and chemical corrosion environments, the epoxy-organic silicon hybrid resin and the modified nano cellulose are subjected to molecular design, interface enhancement and synergistic coupling of the epoxy-organic silicon hybrid resin and the modified nano cellulose; the wear-resistant coating provided by the invention is environment-friendly and excellent in performance.

The invention discloses a bio-based super-hydrophobic ultraviolet curing coating which is prepared from the following raw materials in parts by weight: 33-66 parts of plant oil-based active monomers, 20-45 parts of polythiol, 1-40 parts of modified cellulose, 15-150 parts of an organic solvent and 1-5 parts of a photoinitiator, wherein the plant oil-based active monomer is prepared from epoxidized plant oil, unsaturated organic matters and a Lewis acid catalyst, and the unsaturated organic matters contain hydroxyl and carbon-carbon double bonds located at the tail end of a molecular chain. According to the bio-based super-hydrophobic ultraviolet curing coating disclosed by the invention, a three-dimensional interpenetrating network structure is obtained by cross-linking the plant oil-based active monomer, the polythiol and the cellulose in an ultraviolet curing process, a chemical bonding type surface microstructure super-hydrophobic material with excellent wear resistance is constructed, and the preparation method is simple. The invention further discloses application of the bio-based super-hydrophobic ultraviolet curing coating in surface treatment of a base material.

The invention belongs to the technical field of preparation of composite membranes, and discloses a preparation method of a multipurpose nano-material composite membrane, which comprises the following steps: firstly, carrying out preliminary grafting modification on cellulose nanofibers by using a benzophenone derivative to improve the dispersity, and then introducing a preset functional group to carry out deep modification to obtain a modified cellulose nanofiber composite membrane; the mass ratio of the cellulose nanofiber to the benzophenone derivative is (1: 0.05)-(1: 0.2); according to the invention, the dispersity of the nano material and the grafting efficiency of the functional group are effectively improved by finely regulating and controlling the modification process of the nano material, so that the composite film further enhances the multiple functional characteristics of antibacterial property, antifouling property, ultraviolet shielding property and the like on the basis of keeping the original excellent properties; and meanwhile, the construction of the functional gradient ensures that the composite film can exert the optimal performance in different application scenes, interface defects are not easily generated among the functional layers, and the overall performance is not influenced.

The invention discloses a preparation method of a waste paper regenerated fiber super-hydrophobic anti-icing coating, and relates to a preparation method of an anti-icing coating, and the method comprises the following steps: preparing nano cellulose powder through recycled waste paper, modifying the nano cellulose powder through dopamine hydrochloride, p-phenylenediamine and octadecylamine to form OA-CP-F powder, and compounding the OA-CP-F powder with epoxy resin and an epoxy resin curing agent to form a spraying coating, the curing agent is an epoxy resin common curing agent. The coating with a micro-nano composite structure is formed on the surface of a base material by adopting a spraying method, the contact angle is as high as 155 degrees, the icing time can be remarkably prolonged to 358s (-20 DEG C), an ice layer on the surface of the coating is loose frost ice and is extremely easy to fall off, the icing risk of various materials can be remarkably reduced, and the coating is suitable for the fields of aerospace, electric power facilities and the like.

A material with a scaffold comprising a series of at least partially spaced fibers and gas vesicles locates between fibers. The gas vesicles comprise external anchoring modules that are effective to anchor the gas vesicles to the fibers.

The present invention describes a method for treating cellulosic materials with a composition comprising hemicellulose and / or lignin and a sucrose fatty acid ester to modify the barrier function of such materials. The disclosed method uses hemicellulose or lignin in combination with a sugar fatty acid ester to form a film on the cellulosic material, and the disclosure includes providing products made by such methods. Materials so treated exhibit more effective barrier function and mechanical properties and can be used in any application where such characteristics are desirable.

The invention discloses a preparation method of a self-heating PCM anti-icing / deicing super-hydrophobic coating, and belongs to the field of preparation of anti-icing coatings. The invention aims to solve the problems of high energy consumption, poor mechanical property and easy pollution of the traditional anti-icing material. The method comprises the following steps: 1, preparing a 1-ethyl-3-methylimidazolium tetrafluoroborate grafted nano cellulose copolymer; 2, preparing a self-heating PCM anti-icing / deicing super-hydrophobic coating solution; and 3, coating. The self-heating super-hydrophobic coating based on paraffin and palmitic acid eutectic carbon nanotubes is prepared by adopting an easy-to-spray method, has self-heating and super-hydrophobic dual performance, can store heat when sunlight is sufficient and release heat at low temperature, has good self-cleaning performance and mechanical performance, and can be used for preparing the self-heating super-hydrophobic coating based on paraffin and palmitic acid eutectic carbon nanotubes. The device is suitable for anti-icing and deicing in cold regions. According to the invention, a method of self-heating PCM anti-icing / deicing super-hydrophobic coating is adopted, and the icing time is prolonged through self-heating, photo-thermal and super-hydrophobic functions.

The present application provides a separator, a manufacturing method thereof, and a secondary battery and a power consuming device related thereto. The separator includes a porous substrate and a coating provided on at least one surface of the porous substrate, the coating including nanocellulose, the surface tension of the porous substrate is δ1 mN / m, the surface tension of the coating is δ2 mN / m, and the separator satisfies δ1 / δ2≧0.68. The separator according to the present application is characterized by excellent heat resistance and high viscosity strength, and therefore a secondary battery using the separator can have high energy density, high thermal safety, and long service life.

The invention discloses a cellulose antibacterial coating, and belongs to the technical field of cellulose, and the cellulose antibacterial coating comprises the following components in parts by weight: 8 to 15 parts of TPP modified cellulose, 1 to 2 parts of heptadecafluorodecyl trimethoxysilane, 1 to 1.5 parts of isocyanate, 0.3 to 0.7 part of nano silicon dioxide, 65 to 70 parts of absolute ethyl alcohol, and 18 to 20 parts of tetrahydrofuran. According to the invention, a flexible alkyl chain is combined with a rigid quaternary phosphonium salt TPP molecule, so that the limitation of a single mechanism of a traditional antibacterial agent is broken through; chemical bond anchoring is realized by a silane pre-hydrolysis oriented grafting technology; according to the method, electrostatic spraying and vapor deposition are combined, efficient coating preparation of a cross-scale base material is achieved, and a reliable solution is provided for large-scale application of the cellulose antibacterial coating in the fields of medical treatment, food packaging, environmental engineering and the like through multi-mechanism cooperation, chemical bonding and intelligent surface design.

Described herein is a seed composition comprising seed with a number of coatings and mixed with amphiphilic compound and hydrogel forming agent. The resulting seed composition which may be dry, is a single product configured to be storage stable and, when broadcast to a site, acts to deter or kill localised plant growth around the seed as defined by the agrochemical activity if agrochemical is present. The seed composition also supports nutrient levels and hydration about the seed resulting in high levels of subsequent seed germination. Related methods of manufacture and use are also described herein.

The invention provides an isolating membrane, a preparation method thereof and a related secondary battery and an electric device, the isolating membrane comprises a porous base material and a coating arranged on at least one surface of the porous base material, the coating comprises nanocellulose, the surface tension of the porous base material is delta 1 mN / m, the surface tension of the coating is delta 2 mN / m, the surface tension of the coating is delta 1 mN / m, and the surface tension of the coating is delta 2 mN / m. And the isolating membrane satisfies delta1 > = 23 and delta2 > = 25 < = delta2 < = 50. The isolating membrane provided by the invention has the characteristics of excellent heat resistance and high viscosity strength, so that the secondary battery using the isolating membrane can give consideration to high energy density, high thermal safety performance and long service life.

The invention discloses environment-friendly water-based gloss oil for packaging and printing and a preparation method of the environment-friendly water-based gloss oil, and relates to the technical field of packaging and printing. The coating comprises the following components: 30-50 parts of an acrylate copolymer emulsion, 10-20 parts of a waterborne polyurethane dispersion, 3-8 parts of modified nano cellulose, 2-7 parts of an inorganic nanoparticle compound, 3-8 parts of a coalescing agent, 2-5 parts of a leveling wetting agent, 0.5-2 parts of a defoaming agent, 2-6 parts of a cross-linking agent, 3-8 parts of a wax emulsion, 0.5-2 parts of a pH regulator and 15-35 parts of deionized water. The acrylate copolymer and the waterborne polyurethane are compounded, and the modified nano cellulose and the inorganic nano particle compound are combined, so that the glossiness, the wear resistance, the adhesive force and the water resistance are improved in a balanced manner, and the performance is close to or even superior to that of the traditional solvent type gloss oil; the evaporation resistance of water is remarkably reduced, the drying time is shortened to be within 20 seconds, the water-based ink is suitable for high-speed printing equipment, and the production efficiency is improved.

According to the PBAT or / and PLA dispersion and the preparation method thereof, the preparation method of the barrier coating liquid, the prepared coating liquid and the application of the barrier coating liquid, the PBAT or / and PLA dispersion provided by the invention is relatively safe in preparation process and application due to the fact that the used dispersing agent is only composed of ethanol, propylene glycol, glycerol and 1, 3-butanediol and does not need other auxiliaries; the prepared barrier coating liquid is used for preparing a coating, is water-based bio-based and degradable, and has waterproof and oil-proof characteristics. The problems that the waterproof performance cannot be achieved or can be achieved only after being complex and solvents are unhealthy in the prior art are solved.

The present invention provides a carbon material dispersion capable of forming a coating film having improved conductivity in a thin film state at a low concentration of a conductive material. [Solution] A carbon material dispersion contains at least one type of carbon material selected from single-walled carbon nanotubes and multi-walled carbon nanotubes, an aqueous medium, a dispersant, and a binder resin, and satisfies the following requirements (1), (2), and (3). (1) The amounts of dispersant and binder resin relative to the carbon material are within predetermined ranges for each type of carbon material. (2) The surface resistivity of a dry film with a thickness of 1 μm and a carbon material content of 10 mass% is 1.0 × 10 3 It is less than Ω / sq. (3) The absorbance A at 780 nm of the diluted dispersion obtained by diluting with a blank solution so that the absorbance at 580 nm is 1.8 ± 0.02. H Absorbance A at a wavelength of 380 nm L Ratio of (A L / A H ) is 1.45 or greater.

The present invention discloses a method of enabling the easy separation of labels, including wrap around labels and sleeve labels, particularly shrink sleeve labels, from containers during recycling through the use of a specially formulated coating to be applied in the seam area. The coatings ensure proper bonding, and shrink properties, of the labels, and have been designed to help de-bonding of the seam in a hot caustic wash step, or a solvent wash step. The method does not rely on floatation separation and therefore may be applied to any container / label material combination regardless of their specific gravity differences.

The present invention can be applied to a technical field related to secondary batteries, and, for example, a separator structure for a lithium ion secondary battery, a manufacturing method therefor, and a secondary battery using same. The present invention relates to a separator structure provided inside a secondary battery, the structure being capable of comprising: a porous support comprising a first surface and a second surface; and an ion surface-treated nanocellulose fiber placed on the first surface and / or the second surface of the support.

The application discloses a TAC composite film and a preparation method thereof, and belongs to the technical field of optical films. The TAC composite film comprises a modified TAC base film and a functional protective coating. The modified TAC base film is prepared by casting a triacetate cellulose solution into a film. According to mass fractions, the triacetate cellulose solution comprises the following raw materials: 20 parts of triacetate cellulose, 1-2 parts of mercapto-esterified cellulose, 0.1-0.3 parts of a plasticizer, 0.1-0.4 parts of an ultraviolet absorber and 80-100 parts of a mixed solvent. The functional protective coating is obtained by light curing after coating of a coating slurry. According to mass fractions, the coating slurry comprises the following raw materials: 30 parts of a light-cured acrylate prepolymer, 4-8 parts of alkenyl quaternary ammonium cellulose, 0.5-1.5 parts of a photoinitiator and 40-50 parts of a solvent. The application adds mercapto-esterified cellulose to the base film and adds alkenyl quaternary ammonium cellulose to the coating, so that the interfacial bonding force is enhanced through chemical action.

The present invention relates to a metal particle-containing composition containing the following component (A), component (B) and component (C), wherein the content of the component (B) based on 100 parts by mass of solid ingredients in the metal particle-containing composition is 70 parts by mass or more, as well as a method of producing a film and a method of producing an electrically conductive member using the metal particle-containing composition: (A) a modified cellulose fiber having a modifying group at an anionic group of an anion-modified cellulose fiber via a covalent bond; (B) metal particles; and (C) an organic compound which is liquid at 25°C under 1 atm.

The application discloses a kind of water-based fireproof paint and preparation process thereof, and relates to functional coating technical field.The application uses fluorosilicon epoxy hybrid emulsion as base material, and comprises hydrophobic silica aerogel, composite microencapsulated flame retardant, composite bio-based charring agent, composite free radical trapping agent, reinforcing fiber and self-repairing microcapsule and other functional components.The water-based fireproof paint prepared by the application realizes efficient flame retardation and long-term protection through multiple synergistic mechanisms such as gas-phase free radical trapping, multi-layer heat-shielding shielding and self-repairing expanded carbon layer, and has excellent fire resistance, durability and mechanical properties.

A method for increasing emission output from an energy modulation agent, involving:drying the energy modulation agent in particulate form to reduce moisture level of the energy modulation agent by at least 25% to provide a dried energy modulation agent; andcoating the dried energy modulation agent with a coating having high transmissibility at a wavelength of primary emission from the energy modulation agent upon excitation,and energy modulation agents prepared thereby.

The invention belongs to the technical field of functional coatings, and particularly relates to a high-barrier flexible nanocellulose coating capable of being used for a polylactic acid film material, a coating and a preparation method of the high-barrier flexible nanocellulose coating. The dialdehyde nanocellulose is prepared by taking nanocellulose crystals as a raw material and sodium periodate as an oxidizing agent and oxidizing hydroxyl into aldehyde groups. The preparation method comprises the following steps: reacting dialdehyde nano-cellulose with cysteine to prepare sulfydryl modified nano-cellulose; then mixing the CNC-cys with a polyethylene glycol diacrylate cross-linking agent and a photoinitiator to form a water-based paint, and then carrying out blade coating, ultraviolet light irradiation cross-linking and room temperature drying processes to obtain the flexible and transparent nano cellulose coating. By adopting the process to coat the surface of the polylactic acid film, a compact, transparent and flexible nano cellulose coating can be formed on the surface of polylactic acid, and a polylactic acid film material with good degradability, flexibility and high barrier is finally obtained and can be used as a green packaging material in the fields of biological health, food preservation, agriculture and the like.

The invention relates to the technical field of coatings, in particular to a road marking composite coating, a preparation method and application. The road marking composite coating is prepared from 35 to 45 parts of petroleum resin, 18 to 25 parts of a toughening modifier, 3 to 6 parts of a compatilizer, 25 to 28 parts of filler, 15 to 25 parts of glass beads, 0.3 to 0.8 part of an antioxidant, 4 to 8 parts of nano titanium dioxide and 0.2 to 0.5 part of a dispersing agent, the toughening modifier is a mixture of a toughening modifier A and a toughening modifier B. The road marking composite coating is tightly combined with a road surface, is high in adhesive force, good in toughness, wear resistance, weather resistance and temperature resistance, not prone to cracking or falling off and capable of effectively resisting ultraviolet rays, and the comprehensive performance of the coating is integrally improved. According to the preparation method, the overall performance of the coating is optimized, the production efficiency is high, the performance of the obtained coating is stable, and the preparation method is suitable for marking in various roads and complex environments.

A polarizing plate and an optical display including the same are provided. A polarizing plate includes a polarizer; and a first retardation layer and a second retardation layer sequentially stacked on a lower surface of the polarizer, and the first retardation layer has a degree of biaxiality (NZ) of less than 0 at a wavelength of 550 nm and is a non-liquid crystal layer, and the second retardation layer has a degree of biaxiality (NZ) of greater than 1 at a wavelength of 550 nm.

[Problem] To provide a non-fluorinated resin-based aqueous oil-resistant agent composition with which an oil-resistant paper having high oil resistance and high air permeability can be obtained, the components contained in the composition not including any fluorine-based resins or an organic solvents in consideration of health aspects and environment aspects. [Solution] An aqueous oil-resistant agent composition containing (A) a cellulose-based resin, (B) an addition-curable silicone emulsion, (E) water, and (F) a platinum group metal-based catalyst, wherein the addition-curable silicone emulsion (B) contains (G) an alkenyl group-containing organopolysiloxane, (H) an organohydrogen polysiloxane, (I) a surfactant, and (J) water.

Provided is a composition that includes a wax combined with a nanocellulose. The composition can be applied to a substrate leading to a better wax coverage with reduced porosity that provides for improved oil, grease, gas, water, and water vapor barrier properties to the coated articles.

A manufacturing method for a thermal insulating material, including: an applying step of applying a coating liquid obtained by mixing aerogel particles, a water-soluble polymer having a hydrophobic group, and a liquid medium such that the aerogel particles are aggregated, with a coating means applying a pressure of 1.5 MPa or less to the coating liquid to obtain a coated film; and a removing step of removing at least a part of the liquid medium from the coated film to obtain a thermal insulating material.

The present invention relates to an aqueous barrier coating composition comprising: 20-80% by weight, based on the total solids content of the aqueous barrier coating composition, of a dissolved first polysaccharide having a first degree of polymerization (DP1) of at least 150; and 20-80% by weight, based on the total solids content of the aqueous barrier coating composition, of a dissolved second polysaccharide having a second degree of polymerization (DP2) of 100 or less; the ratio of DP1:DP2 is at least 10:1; and the aqueous barrier coating composition has a total solids content in the range of 10-90% by weight.