31results about How to "Good dispersion system" patented technology

The invention relates to a spinel lithium titanate composite material, which contains lithium titanate. The diameter of the microcrystalline grains of the lithium titanate is 36-43nm and the average particle diameter of the lithium titanate is 1-3 microns. The invention additionally provides a preparation method for the lithium titanate composite material. The lithium titanate composite material of the invention contains a small amount of TiO2 and Li2TiO impurity phases. Batteries made of the lithium titanate composite material have good electrochemical properties. Moreover, the preparation method and the production technology for the lithium titanate composite material are simple and the industrialization can be realized.

The application relates to the field of textile materials, and specifically discloses an antibacterial fabric for a sofa cushion and a production process thereof. The antibacterial coating layer comprises the following parts by weight: 45-50 parts of deionized water, 3-5 parts of chitosan and 6-8 parts of modified antibacterial particles; the modified antibacterial particles are 200-300 mesh titanium dioxide particles. This application uses titanium dioxide particles as the main component of the antibacterial agent. On the one hand, the active center of the titanium dioxide particles can absorb the energy of the environment, inhibit or kill bacteria, thereby producing antibacterial properties. On the other hand, titanium dioxide, as a sunscreen, can effectively absorb ultraviolet rays Light and reduce the aging reaction of ultraviolet light on the surface of the material, thereby effectively improving the antibacterial and durable performance of the fabric.

The application relates to the field of catalyst materials, and specifically discloses a preparation method of a highly stable methanol fuel decomposition catalyst. The following preparation steps are included: S1, adding copper nitrate, magnesium nitrate and aluminum nitrate to deionized water, stirring and mixing with sodium carbonate solution to obtain a matrix liquid; S2, adjusting the pH of the matrix liquid, standing for aging, and removing the lower layer of precipitation and crystallization treatment, heat preservation and roasting to obtain matrix particles; S3, by weight parts, respectively weigh 45-50 parts of solvent, 0.5-1.0 parts of modified graphite particles and 3-5 parts of chloroplatinic acid and stir and mix to obtain a reaction solution ; S4, hydrothermal treatment under argon atmosphere, adjust the pH to 2.5, filter and collect the precipitate, wash, dry, crush and sieve. The application firstly prepares the hydrotalcite substrate, and then composites the graphite surface loaded with reduced platinum simple substance with the hydrotalcite substrate, which improves the activity of the methanol decomposition catalyst in the catalytic decomposition reaction and improves the stability of the catalyst.

The invention belongs to the technical field of aluminum materials, and specifically relates to a supercritical preparation method of aluminum foam with controllable pore size, comprising: step 1, adding ethyl cellulose to absolute ethanol and ultrasonicating for 5-10 minutes to obtain a dispersed alcohol solution; step 2. Add crushed aluminum scraps to the dispersing alcohol solution and stir for 20-50 minutes to obtain a suspension alcohol solution; step 3, pour supercritical carbon dioxide fluid into the suspension alcohol solution, react with microwave at constant pressure for 1-3 hours, and obtain Mixed solution; step 4, put the mixed solution into a metal mold for heating and constant pressure reaction for 1-3h, then slowly constant temperature and pressure relief reaction for 2-4h, and use nitrogen purge to cool to obtain the foamed aluminum precursor; step 5, to foam The aluminum precursor is decomposed by light for 2-4 hours to obtain foamed aluminum material. The invention thoroughly solves the problem that the structural parameters cannot be controlled and adjusted arbitrarily; the preparation method is simple, it is beneficial to mass production, and the production cost is low; the prepared foamed aluminum has a stable and uniform pore structure, which improves the controllability of the pores.

The invention discloses a preparation method of hollow type alumina microspheres. The method comprises the steps that step 1, polyvinyl alcohol is added into deionized water, ultrasonically stirred until completely dissolved to obtain dispersed alcohol liquid; step 2, polylactic acid powder and a curing agent are added into a dispersed solution to conduct microwave reaction for 30 to 60 minutes, and then the mixture is added to a mold to rapidly reduce the temperature to obtain macromolecule spherical particles; step 3, ammonium aluminum carbonate hydroxide and polyvinylpyrrolidone are added into absolute ethanol to be stirred uniformly, and then uniformly coated on the surfaces of the macromolecule spherical particles, and inorganic-organic spherical particles are obtained; step 4, the inorganic-organic spherical particles are placed in a reaction kettle and heated and pressurized for 3 to 5 hours to obtain solidified spherical particles; step 5, the solidified spherical particles areplaced in a methanol reaction solution, micro-current electrolysis is carried out for 3 to 5 hours, after the reaction is completed, the solidified spherical particles are taken out for washing and drying to obtain the hollow type alumina microspheres. The preparation method of the hollow type alumina microspheres solves a problem that the preparation of inorganic hollow spheres is difficult, thepreparation method is simple and rapid, the structure is stable, and a large specific surface area is provided.

This invention relates to a freon-free safe and efficient composite propelling system for aerosol. The composite propelling system is composed of propellent and latent solvent, dispersant or compatibilizer. The propellent is 1,1,1,2-tetrafluoroethane or 1,1,1,2,3,3,3-heptafluoropropane. The latent solvent, dispersant or compatibilizer is 1,1,1,3,3-pentafluorobutane, 1,1,2,3,3-pentafluoropropane, cyclopentane or isopentane. The composite propelling system has such advantages as wide applications, no freon, high safety and high volatilization speed.

The invention provides a high-strength rapid aluminized film adhesive and a preparation method thereof. The aluminized film adhesive provided by the present invention is formed by preparing the above components in a certain proportion, wherein the polymerized monomer acts synergistically with a specific tackifying resin, a tackifier and a certain quick-drying agent, and is combined with a thickener, Dispersants, fillers and emulsifiers make the adhesive not only meet the construction requirements of grouting stick roll coating, but also effectively improve the bonding speed and bonding strength of the adhesive; in addition, with antioxidants and anti-fungal agents, The aging resistance, heat resistance, chemical corrosion resistance, weather resistance and mildew resistance and antibacterial properties of the adhesive can be improved; in addition, the above adhesive is relatively safe and environmentally friendly.