5results 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.

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.

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.