8 results about "Hydrophile" patented technology

The application discloses an interface-locked anti-swelling hydrogel coating mesh membrane and a preparation method and application thereof, and comprises the following steps: growing a tin dioxide particle layer on the surface of a stainless steel filter mesh in situ, depositing a polydopamine coating on the tin dioxide particle layer, coating an anti-swelling hydrogel coating on the polydopamine coating, and preparing the interface-locked anti-swelling hydrogel coating oil-water separation mesh membrane through heat curing and freeze-thaw cycles; the polydopamine in the mesh membrane has adhesion, and cooperates with sulfuric acid and [2-(methacryloyloxy)ethyl]dimethyl-(3-sulfopropyl) ammonium hydroxide to induce the Hofmeister effect, so that polyvinyl alcohol molecular chains are dehydrated and crystallized, a high-physical-crosslinking anti-swelling hydrogel coating is formed, strong interface bonding is provided, the micro-nano rough structure constructed by the tin dioxide particles and the introduced hydrophilic substances are combined, the problems of easy excessive swelling and interface delamination of the hydrogel coating oil-water separation mesh membrane are overcome, and long-acting and high-performance oil-in-water emulsion separation can be realized.

To provide an emulsion composition which has improved emulsion stability and can be jetted from a nozzle while maintaining the emulsion stability without reducing the amount of an oily component, to provide a cosmetic containing the emulsion composition, and to provide a method for producing the emulsion composition.SOLUTION: The emulsion composition of the present invention comprises a polyol having three or more hydroxyl groups in the molecule, a surfactant having 10 or more carbon atoms that forms an O / W (oil-in-water) emulsion with an HLB (hydrophile-lipophilebalancevalue) of 12 or more, an oily component, water, and a polymeric emulsifier comprising crystalline cellulose, xanthan gum, and cellulose gum, and is emulsified by a combination of a D-phase emulsification method and a powder emulsification method.SELECTED DRAWING: Figure 1

A microneedle structure is provided with needle-like parts having a flow path therein. The flow paths open on the surface of the needle-like parts. A coating containing a hydrophilic substance is formed on the inner surface of the flow paths.

The invention provides a polymer microsphere as well as a preparation method and application thereof. The polymer microspheres contain a first polyester material and a second polyester material, the first polyester material is polyester modified by a hydrophilic substance, and the second polyester material is polyester not modified by the hydrophilic substance; the polymer microsphere has a through pore channel structure, the through pore channel structure forms pores in the surface of the polymer microsphere, and the interior of the polymer microsphere is of a porous honeycomb structure. When the polymer microsphere provided by the invention is used as an organism filling agent, the polymer microsphere has a good adhesion effect on cells, better cell adhesion can be realized, and collagen secretion is improved; meanwhile, the through pore channel structure enables body tissues to grow more uniformly in the microspheres and strengthens the combination of the tissues and the polymer microspheres, so that the polymer microspheres are not easy to displace after being injected and in the later degradation process, and the safety is improved.

The invention discloses a magnetorheological fluid with excellent high and low temperature fluidity and sedimentation stability and a preparation method thereof. The magnetorheological fluid comprises the following components in percentage by mass: 70-90% of magnetic particles, 7-25.2% of an alkane carrier liquid, 0.2-0.8% of a lubricant, 0.3-1% of a surfactant, 0.5-1.5% of a dispersant and 0.5-1.5% of a thickener. The surface active agent is a lipophilic surface active agent and is HLBlt (Hydrophile Lipophile Blume); 6; the dispersing agent is one or more of fatty acid modified polyester, modified polyurethane, modified acrylate, block polyether and polymethacrylate; the thickening agent is one or more of organic bentonite, magnesium aluminum silicate and silicon dioxide. The magnetorheological fluid provided by the invention has good fluidity at high and low temperatures, and has good sedimentation stability and redispersibility at high temperature; and the resistance is small under zero field, low speed and low shear, the whole suspension cannot be harder, and the comfort level is good.

This invention discloses a method for preparing a hydrophilic array based on a hydrophobic substrate, comprising the following steps: (1) covering a hydrophobic substrate with a mask having a plurality of holes evenly arranged; (2) depositing a solution or suspension of hydrophilic material into the holes on the mask; wherein the deposition method is ultrasonic atomization, spraying, or chemical vapor deposition; (3) during the deposition process, placing a movable mask on a porous mask, and changing the shielding area of ​​the movable mask by motor drive or manual movement to control the amount of hydrophilic material at different positions in the array; (4) removing the mask from the hydrophobic substrate, so that the hydrophilic material is deposited on the hydrophobic substrate to form a hydrophilic region array; this invention does not require complex process steps or equipment, and realizes efficient, controllable, and stable preparation of hydrophilic arrays.

This invention relates to the field of oil-water separation technology, and in particular to a superhydrophilic metallic material, its preparation method, and its applications. A metal mesh is immersed in a hydrophilic substance solution for 2-72 hours to obtain a hydrophilic substance-treated metal mesh; the hydrophilic substance-treated metal mesh is then immersed in a binder solution for 2-72 hours to obtain a binder-treated metal mesh; finally, the binder-treated metal mesh is immersed in a metal salt solution for 10 hours to obtain the superhydrophilic metallic material. The material prepared by this invention exhibits excellent performance in separating oil-water mixtures of different viscosities, demonstrating good separation efficiency and stability. Compared to existing superhydrophilic / underwater superoleophobic surface materials, the material of this invention shows significant advantages in oil-water separation capability, stability, and cost-effectiveness, and has broad potential for industrial production applications.

The invention relates to the technical field of chemical engineering, in particular to waterproof wax for an artificial board and a preparation method and application thereof. The waterproof wax for the artificial board comprises the following components in percentage by weight: 40-43% of paraffin; 0.8 to 1.9 percent of a low molecular polymer; 0.4%-1.9% of a high-molecular polymer; 0.2%-0.9% of a cross-linking agent; 4%-6% of an emulsifier; and the balance of water. The waterproof wax is a product obtained by further homogenizing and dispersing a cross-linked product obtained by paraffin, a specific low-molecular polymer and a high-molecular polymer under the action of a cross-linking agent in the presence of an emulsifier with an HLB (Hydrophile-Lipophile Balance) value of 8-14. The waterproof wax has extremely high viscosity and can replace part of urea resin while playing a waterproof role, the use amount of the urea resin is reduced, and the mechanical strength and the waterproof effect of the finally obtained plate are obviously enhanced.