69results about How to "Improve hydrophilic properties" patented technology

The invention relates to a titanium oxide nanowire modified polyvinylidene fluoride separation film and a preparation method of the film. The titanium oxide nanowire modified polyvinylidene fluoride separation film comprises polyvinylidene fluoride (PVDF) accounting for 18-25wt% of the total mass, organic solvent accounting for 70-80wt% of the total mass, porogen accounting for 3-5wt% of the total mass, dispersing agent accounting for 0.1-1wt% of the total mass and titanium oxide nanowire accounting for 1-5wt% of PVDF. The modified film solves the problem that the PVDF-TiO2 nanoparticles are easily agglomerated and can easily run away, and has stability and durability.

The invention discloses a polycarboxylic acid water reducing agent for improving a rheological behavior of cement pastes. The polycarboxylic acid water reducing agent is prepared by a copolymerizationreaction of a first mixture, unsaturated polyether, hydroxyethyl methacrylate phosphate, unsaturated acid, a compound A, an initiator, a molecular weight regulator and water. The invention also discloses a preparation method of the polycarboxylic acid water reducing agent for improving the rheological behavior of cement pastes. The method comprises the following steps that an esterification product with a benzene ring is obtained by carrying out the ester exchange reaction between alkylphenol polyoxyethylene ether and unsaturated carboxylic ester; the esterification product is copolymerized with the unsaturated polyether, compound A and hydroxyethyl methacrylate phosphate to introduce a benzene ring, a phosphate group and an imide structure into branched chains of the polycarboxylic acidwater reducing agent, so that the rheological behavior of the concrete, and the stability, the fluidity and the like of the slurry can be improved.

This invention provides a cell made of polymers for spectra measurement while inhibiting a decrease in a molecular weight of resin caused by discharge treatment and having a stable hydrophilic modified surface. The hydrophilic resin cell is prepared by providing a polymeric resin cell between the two opposing electrodes, applying an electric field to a region between the above opposing electrodes under a nitrogen atmosphere with a pressure close to the atmospheric pressure to generate an electric discharge, and exposing the cell subjected to discharge treatment with a gas including oxygen.

The invention discloses a vapor chamber with a gradient wick structure and a preparation method of the vapor chamber. The vapor chamber comprises an upper shell plate, a condensation end wick, a support column, an evaporation end wick, a lower shell plate and a liquid injection pipe, wherein the inner surface of the lower shell plate can be a plane or a stepped concave surface, the inner surface of the lower shell plate can be divided into different areas according to the relative positions of the lower shell plate and a heat source contact area, the evaporation end wick is a composite porous medium with different capillary apertures and porosities, and the capillary apertures and the porosities change along with the change of the positions of the different areas. Therefore, a wick structure with gradient characteristics is formed. The effective capillary aperture, porosity and the like of the wick are regulated and controlled, the wick structure with large capillary driving force, high permeability and small flow resistance is prepared, and the vapor chamber prepared on the basis of the wick structure has the advantages of large heat transfer capacity, high heat transfer efficiency, high inverse gravity performance, high reliability and the like; and the heat dissipation requirement of electronic equipment with high heat flux density can be met.

The invention belongs to the technical field of self-cleaning coating layers and specifically relates to a surface-hydroxylation mesoporous SiO2-TiO compound self-cleaning coating layer and a preparation method thereof. The preparation method disclosed by the invention comprises the steps: firstly, respectively preparing SiO2 sol and TiO2 sol; then roasting to obtain a mesoporous SiO2 film and utilizing a dipping-pulling method to cover a layer of TiO2 on the surface of the mesoporous SiO2 film and roasting to prepare a mesoporous SiO2-TiO2 compound coating layer; finally, performing hydrogenperoxide hydroxylation treatment to prepare the surface-hydroxylation mesoporous SiO2-TiO2 compound self-cleaning coating layer. According to the preparation method disclosed by the invention, the hydroxylation treatment on the surface of the self-cleaning coating layer makes surface polarity of the compound self-cleaning coating layer be enhanced and surface hydrophilicity be improved; mesoporesare introduced into, so that the surface roughness of the coating layer is increased to enhance the surface hydrophilicity of the coating layer; meanwhile, more TiO2 active sites are exposed, so thatsurface wettability of the compound self-cleaning coating layer disclosed by the invention is obviously improved, and the compound self-cleaning coating layer can still has good hydrophilic property under the situation without ultraviolet irradiation.

The invention provides anti-glare and anti-fogging glass as well as surface treatment fluid thereof and a preparation method thereof. The surface treatment fluid for the anti-glare and anti-fogging glass is prepared from the following components: ethyl orthosilicate, amino acid, water and alcohol, wherein the mass ratio of ethyl orthosilicate to amino acid to the water to the alcohol is equal to 1to (0.01-0.05) to (8-20) to (0.5-3); the surface treatment fluid for the anti-glare and anti-fogging glass is obtained by mixing ethyl orthosilicate, amino acid, the water and the alcohol, and then stirring for carrying out a reaction. By adopting the technical scheme, a water film formed on the surface of the anti-glare and anti-fogging glass has an anti-reflection effect, so that the anti-glareeffect of the display screen glass can be further improved; furthermore, based on a hydrophilic principle, the water vapor forms the water film on the surface of the glass instead of condensing intodewdrops, so that the condensation problem is fundamentally solved; furthermore, the preparation process is environmentally friendly.

The present invention relates to method of treating printing plate after printing for re-imaging, and the printing plate has one carrier for applying amphoteric molecules. Before reuse in printing, amphoteric molecules are applied to the printing plate to clean off printing ink basically for re-imaging.

The invention provides a graphene oxide / molecularly imprinted composite material, and a preparation method and an application thereof, and belongs to the technical field of organic pollutant degradation. The preparation method of the graphene oxide / molecularly imprinted composite material comprises the following steps: mixing template molecules, a functional monomer and a pore-foaming agent, and carrying out a pre-polymerization reaction to obtain a prepolymer; mixing the prepolymer, a first cross-linking agent, an initiator and BiOBr, and carrying out a polymerization reaction under a protective atmosphere condition to obtain a first polymer; eluting the first polymer to obtain a molecularly imprinted polymer; and mixing the molecularly imprinted polymer, graphene oxide, a solvent and a second cross-linking agent, and carrying out a cross-linking reaction to obtain the graphene oxide / molecularly imprinted composite material. The prepared graphene oxide / molecularly imprinted compositematerial has excellent selective adsorption performance and photocatalytic performance, and is long in cycle life.

The invention discloses an electric heating film and a preparation method and an application thereof. The electric heating film comprises a waterproof layer, an insulating layer, an electric heating layer, an electrode, an insulating layer, a thermal insulation layer and a waterproof layer and the like; the electric heating layer comprises fiber base fabric, a high-conductivity nanometer carbon material and a functional auxiliary; and the high-conductivity nanometer carbon material is adsorbed on the surface or in the gap of the fiber base fabric. The preparation method comprises the steps oftaking the fiber base fabric as the bearing substrate of the high-conductivity nanometer carbon material, performing wetting to form a hydrophilic treatment liquid firstly, next, performing baking andcuring, then coating with a wetted nanometer carbon aqueous dispersion liquid, and next, performing baking and curing to obtain the electric heating layer; and next, gluing with the insulating layer,the thermal insulation layer, the waterproof layer and the electrode through hot melt adhesive to form the electric heating film. The electric heating film is free of binder resin, so that the problem of electric heating performance degradation caused by resin aging can be obviously avoided; and the electric heating film has the integrated performance of electric heating, waterproof property, thermal insulation, reflection and the like, and can be widely applied to the industries of home heating, floor heating, thermal insulation, industrial heating and the like.