5 results about "Biomimetic coating" patented technology

This invention relates to the field of zinc alloy surface modification technology, and particularly to a corrosion-resistant medical zinc alloy, its preparation method, and its applications. The preparation method includes the following steps: weighing raw materials according to the chemical composition of the zinc alloy; cleaning the surface of the raw materials; smelting, refining, and casting to obtain an ingot; subjecting the ingot to equal-channel angular extrusion deformation to obtain an extruded zinc alloy; performing high-energy ion implantation on the zinc alloy to obtain a nitrogen-ion-implanted zinc alloy; and preparing a coating on the surface of the nitrogen-ion-implanted zinc alloy to obtain the final product. This invention achieves a high-adhesion, dense, and uniform deposition effect on the alloy surface through the synergistic control of "equal-channel angular extrusion + high-energy nitrogen ion implantation + biomimetic coating deposition," solving the problem of severe galvanic corrosion at localized sites in existing zinc alloys under corrosive environments. Simultaneously, the dense deposition layer helps inhibit rapid dissolution of the zinc alloy surface, significantly reducing the corrosion rate of the zinc alloy in corrosive environments.

This invention discloses a method for surface-modified biomaterials and a modified pericardial material, relating to the field of biomedical materials technology. The method includes the following steps: S1, providing animal pericardial material cross-linked with glutaraldehyde; providing a bridging molecule containing a first bridging group and a second bridging group, and a phosphorylcholine polymer with a third bridging group at its end; binding the first bridging group to an aldehyde group on the surface of the pericardial material via a first covalent reaction; binding the second bridging group to the third bridging group via a second covalent reaction, thereby achieving grafting of the phosphorylcholine polymer onto the material surface; the first covalent reaction and / or the second covalent reaction include Schiff base formation and reductive amination processes. The modified pericardial material prepared in this application introduces a phosphorylcholine biomimetic coating, which can improve blood compatibility on the material surface, reduce activation of the coagulation system and platelet adhesion, and inhibit the initiation of calcium ion deposition on the material surface, while exhibiting high safety.

The utility model relates to nozzle cleaning technical field, and disclose a kind of self-cleaning function's jet aeration device nozzle, including aerator nozzle shell, the top of the aerator nozzle shell is provided with water inlet, the bottom of the aerator nozzle shell is provided with nozzle mouth;Cleaning assembly, the cleaning assembly is set to the inside and outside of aerator nozzle shell and water inlet. By being provided with rotating guide vane, water flow state can be optimized, aeration uniformity is improved, cooperate with helical guide plate to enhance water flow kinetic energy, improve aeration efficiency, then, water drive turbine drives micro rotary blade to scrape nozzle mouth inner wall impurity in real time, effectively prevent nozzle mouth blockage, cooperate with superhydrophobic biomimetic coating, reduce the adhesion of impurity and wall in water flow, so that impurity is difficult to adhere, reduce the risk of blockage, make subsequent cleaning more easily, achieve the effect of reducing blockage.

This invention relates to the field of biomimetic materials, and particularly to a blood contact material, a biomimetic coating, its construction method, and its applications. The active ingredient in the blood contact material is formed by polymerizing vinyl lysine, oligoethylene glycol methyl ether methacrylate, and vinyl dopamine. The blood contact material is dissolved in a first buffer solution with a pH value of 7.5-9 to obtain a coating solution. The substrate is immersed in the coating solution for a first time and then removed, allowing the substrate surface to be covered with an intermediate coating. The polymerized poly(oligoethylene glycol methyl ether methacrylate) segments can form a dense hydration layer providing antifouling functionality. The polylysine segments can specifically bind plasminogen and tissue-type plasminogen activator, dissolving primary thrombi. The polydopamine segments have adhesive properties, improving the substrate's versatility and facilitating coating formation. The blood contact material can mimic the antifouling and fibrinolytic functions of the vascular endothelium, contributing to a comprehensive antithrombotic effect.

The utility model relates to textile fabric technical field discloses an anti -ultraviolet curtain, including connecting post, the outer wall left and right sides of connecting post all are fixedly connected with baffle, the outer wall sliding connection of connecting post has two protective curtains, the inner wall back of two protective curtains all is provided with lotus leaf bionic coating, the front side of two lotus leaf bionic coating all is provided with nano silver ion antibacterial layer, the front side of two nano silver ion antibacterial layer all is provided with waterproof antibacterial layer, the front side of two waterproof antibacterial layer all is provided with wormwood fibre layer, the front side of two wormwood fibre layer all is provided with nanometer titanium dioxide coating layer. In the utility model, through connecting post and baffle cooperation, guarantee the stable sliding of protective curtain, make the curtain open and close smoothly, lotus leaf bionic coating effectively waterproof, reduce the influence of water vapor to curtain and indoor environment, nano silver ion antibacterial layer and waterproof antibacterial layer cooperation, restrain the bacteria breeding, have promoted the sanitary degree of curtain.