8results about How to "Improve charcoal ability" patented technology

This invention provides a flame-retardant, high-transmittance, and weather-resistant composite material for LED lampshades and its preparation method. By weight, the raw materials include: 80-95 parts bisphenol A type polycarbonate, 4-10 parts phenyl-containing polysiloxane microspheres, 1-4 parts mesoporous silica phosphorus-loaded microspheres, 0.3-0.8 parts silane coupling agent, 0.3-0.8 parts flame retardant, 2-5 parts organic nano-montmorillonite, 0.2-0.6 parts polycarbodiimide, 0.3-0.8 parts antioxidant, 0.3-0.7 parts light stabilizer, and 0.3-1.0 parts lubricant. The flame-retardant, high-transmittance, and weather-resistant composite material for LED lampshades provided by this invention possesses comprehensive properties of high light transmittance, high toughness, and heat resistance.

The invention discloses a halogen-free flame-retardant polypropylene composite material with high boiling resistance and low smoke generation and a preparation method of the halogen-free flame-retardant polypropylene composite material. The flame-retardant polypropylene composite material comprises polypropylene, and a hydrophobic phosphorus-nitrogen intumescent flame retardant is dispersed in the polypropylene; the hydrophobic phosphorus-nitrogen intumescent flame retardant is a phosphorus-nitrogen intumescent flame retardant of which the surface is coated with a vesicle structure, and the vesicle structure is a self-assembly structure obtained after an alcoholysis reaction of a sulfur-containing silane compound and the phosphorus-nitrogen intumescent flame retardant. The flame retardant with the vesicle structure can keep good water resistance and compatibility with a polypropylene matrix in a high-humidity-heat environment, the precipitation amount of the flame retardant after high-temperature water boiling can be reduced, and the migration and precipitation problems of the flame retardant in the polypropylene matrix are effectively solved. Meanwhile, the vesicle structure can also improve the thermal stability and char forming performance of the flame-retardant polypropylene and improve the barrier effect on heat and combustible gas in the combustion process, and compared with common flame-retardant polypropylene, the total released heat is reduced by 24.0%, and the carbon residue mass is increased by 51.7%.

This invention belongs to the field of flame retardant technology, specifically relating to a surface-modified bromide flame retardant and its preparation method. Using tetrabromobisphenol A glycidyl ether and 2,7-dihydroxynaphthalene as raw materials, a high molecular weight brominated epoxy resin flame retardant is prepared by reaction under the action of benzyltriphenylphosphine bromide catalyst. Subsequently, the high molecular weight brominated epoxy resin flame retardant is modified and grafted with a cyclotriphosphazene modifier to obtain a surface-modified high molecular weight brominated epoxy resin flame retardant. This invention uses tetrabromobisphenol A glycidyl ether and 2,7-dihydroxynaphthalene to synthesize a high molecular weight brominated epoxy resin flame retardant. The introduced naphthalene group can greatly improve the thermal stability of the flame retardant. Simultaneously, the surface grafting modification of the high molecular weight brominated epoxy resin flame retardant with a cyclotriphosphazene modifier introduces cyclotriphosphazene, which has a high char-forming ability. The char layer generated during the flame-retardant process can improve the smoke problem of the brominated epoxy resin flame retardant.

This invention relates to a fire-retardant, breathable, and waterproof coating and its preparation method. The fire-retardant, breathable, and waterproof coating comprises component A and component B. Component A consists of a waterproof emulsion, additives, and water. Component B consists of cement, quartz powder, heavy calcium carbonate powder, and a water-reducing agent. The waterproof emulsion is a core-shell structure emulsion, and the core structure also includes a pore-forming agent. This invention involves adding a pore-forming agent during the emulsion polymerization process. After coating, water evaporates, latex particles accumulate, the shell layer deforms and fuses to form a continuous phase, and the core layer acts as a support point. As the pore-forming agent decomposes upon heating, microporous channels are formed within the core and shell layers. Since the size of water vapor molecules is much smaller than the micropore diameter, they can pass through freely, thereby achieving breathability.

The invention relates to a fluoride-free flame-retardant polyphenyl ether resin composition as well as a preparation method and application thereof, and belongs to the technical field of high polymer materials. The resin composition comprises the following raw material components in parts by weight: 67-80 parts of polyphenyl ether resin; 3 to 10 parts of HIPS (High Impact Polystyrene) resin; 10 to 16 parts of a phosphate ester flame retardant; 3 to 8 parts of cross-linked styrene toughening master batch; 1-3 parts of an inorganic nano flame retardant; 0.2 to 0.5 part of an antioxidant; 0.1 to 0.5 part of a light stabilizer; and 0.5 to 1.0 part of a lubricant. Compared with the prior art, the fluoride-free flame-retardant polyphenyl ether resin composition disclosed by the invention solves the problems that the conventional flame-retardant polyphenyl ether resin needs an anti-dripping agent PTFE for synergistic flame retardance but cannot meet the PFAS prohibition, and the fluoride-free flame-retardant polyphenyl ether scheme adopting phosphonitrile for flame retardance needs high cost, and has a wide application prospect.

The preparation method of the intercalated hydrotalcite / phosphate esterification modified castor oil composite fatliquoring agent disclosed by the application is implemented according to the following steps: step 1, preparing Phy-LDH; and step 2, preparing the intercalated hydrotalcite / phosphate esterification modified castor oil composite fatliquoring agent. The application also discloses the intercalated hydrotalcite / phosphate esterification modified castor oil composite fatliquoring agent and application. The application uses sodium phytate intercalated hydrotalcite to expand the interlayer spacing, weaken the interlayer electrostatic effect, reduce the tendency of the sheet layer aggregation, and improve the dispersion stability of the LDH in the castor oil. Meanwhile, the castor oil is modified by phosphate esterification, and a phosphorus-containing group is introduced into the molecule, so that the phosphate esterification modified castor oil and the sodium phytate intercalated hydrotalcite can be uniformly combined to form a stable composite system. The intercalated hydrotalcite / phosphate esterification modified castor oil composite fatliquoring agent also has the functions of softening and flame retardance.

The application relates to the technical field of pollutant adsorption, and discloses a catalyst-loaded activated carbon adsorption material and a preparation method. Water, a precursor and zinc nitrate are added into a flask, stirred and mixed, dried after filtration, ground and mixed with potassium hydroxide, placed in a tube furnace, calcined, and the catalyst-loaded activated carbon adsorption material is obtained. The activated carbon has a high specific surface area and a high pore volume, can promote the adsorption of formaldehyde, the nano zinc oxide is uniformly distributed in the activated carbon matrix and is not prone to agglomeration, has higher photocatalytic degradation performance on formaldehyde, and significantly improves the removal rate of the catalyst-loaded activated carbon adsorption material on formaldehyde.

The invention discloses a high-sealability aluminum foil composite film for encapsulating silicon PU materials, and relates to the technical field of aluminum foil composite films. The invention prepares a long-chain flame retardant by polymerizing 2-carboxyethylphenylphosphite and diethanolamine in advance, and block polymerizes the long-chain flame retardant with a PET segment to prepare a flame-retardant PET, and then stretches the flame-retardant PET into a film after melt extrusion, and then coats a melamine formaldehyde / polyethylene glycol mixed solution on one side of the PET film, and then heat-presses and composites it with aluminum foil after drying and shaping to prepare an aluminum foil composite film.