45results about How to "Smooth material surface" patented technology

The composite electroforming process of preparing nanometer silicon carbide particle reinforced nickel base composite material has electrolytic nickel block as anode material, stainless steel sheet as cathode deposition body, silicon carbide particle of 10-50 nm as reinforcing particle and ammonium cetyl bromide as co-deposition promoter. Through mixing silicon carbide particle and co-deposition promoter solution through stirring, pouring the mixed solution into electroforming solution of nickel amino sulfonate, applying DC voltage while stirring the electroforming solution to make nickel ion and reinforcing particle deposit together onto the cathode mother body and stripping the composite electroformed layer, integrated nanometer silicon carbide particle reinforced nickel base composite material is produced. The produced composite material has high hardness, high strength, high ductibility and relatively great thickness, and may be used as functional structure material.

The metal copper is used as anode material and the metal copper plate is used as cathode deposition mother body, in the electroforming plating liquor the reinforcing body and codeposition promotor prepared with cationic fluorocarbon surfactant, triethanlamine, hexamethyne tetramine and sulfourea are added, then powdered on to make metal copper ions and reinforcing body copeposit on the cathode mother body, then the composite electroformed plating layer can be stripped from cathode to obtain the integrally-reinforced copper base composite material with low cost and excellent performance.

The invention relates to a method for preparing a SiO2-cellulose composite aerogel material with a one-pot method. The method comprises the following steps: taking cellulose as a raw material and dissolving the cellulose with a green alkaluria solvent; taking organic sodium silicate as a silicon source, and stirring and dispersing to obtain a uniformly mixed aqueous solution of the cellulose and the sodium silicate; combining a sol-gel method to obtain regenerated cellulose wet gel containing a silicon source; taking cellulose gel as a framework and taking inorganic acid as a reaction solvent, and inducing to generate SiO2; finally, drying through a CO2 supercritical drying process to obtain the SiO2-cellulose organic-inorganic composite aerogel. The method has the advantages that the process is simple and rapid, has high feasibility and is green and environment-friendly; the problems in an in-situ immersion method that the SiO2 has poor dispersity, low complex content, poor complex stability and the like in a cellulose porous network structure are effectively solved; the prepared inorganic-organic composite aerogel has relatively low coefficient of heat conductivity and good heat insulation performance and has good application prospect in the aspects of low-temperature cold insulation materials, middle-temperature and low-temperature heat insulation and heat preservation materials and adsorption materials.

The invention discloses a touch display device. The touch display device comprises a first substrate and a second substrate opposite to the first substrate; a color film substrate is arranged at a part of the area, toward one side of the second substrate, of the first substrate; a polaroid is arranged on the color film substrate; a cementing layer is arranged on the polaroid; the areas of the first substrate and the second substrate are greater than the area of the color film substrate, the area of the polaroid and the area of the cementing layer; a gap is formed between the first substrate and the second substrate; and a rigid material layer is arranged in the gap, so that the strength of a single-layer area of the first substrate can be effectively increased and the local deformation resisting ability is improved.

The invention discloses a reinforced polylactic acid-based composite material and a preparation method thereof. The present invention uses polylactic acid as the base material, modified nano-calcium carbonate and modified nano-fibrillated cellulose as reinforcing agents, carboxymethyl cellulose and guar gum as dispersants and compatibilizers, and adds chitosan as Antibacterial agent, through high-speed shear dispersion, water bath evaporation, drying, extrusion granulation and tape casting, etc., to prepare a reinforced polylactic acid-based composite material. The reinforced polylactic acid-based composite material of the present invention uses natural raw materials, which are all biodegradable, and is a green and environmentally friendly composite material; the source of raw materials is wide, which reduces production costs and is conducive to industrial production; the use of modified Nano-scale material modified nano-calcium carbonate and modified nano-fibrillated cellulose can effectively improve the mechanical properties of polylactic acid and endow composite materials with excellent comprehensive properties.

The invention is applicable to the technical field of membraneous materals, and provides a polyimide filter membrane, and a preparation method and application thereof. The polyimide filter membrane is composed of compounds A disclosed as the chemical structural formula (I) in the specification, wherein the number-average molecular weight of the compounds A is 80000-100000. In the chemical structural formula (I), Ar is disclosed as one of the structural formulae in the specification. The polyimide filter membrane provided by the invention has the advantages of small pore size and high entrapment rate for fine particles in air. The polyimide filter membrane material has the characteristics of high compactness and smooth surface; and the formed fibers can not easily shed and have favorable stability. Besides, the polyimide filter membrane is low in cost, and is only less than one-fifth of the price of the same mass of commercially available sampled filter membrane.

The invention relates to a novel paper-reinforced plant-based composite material and a preparation method thereof. The composite material is composed of plants, paper, adhesives and polyurethane. The reinforcement method is to introduce the inner layer of paper reinforcement on the basis of polyurethane surface layer reinforcement. The source of paper reinforcement raw materials is convenient, which can realize the reuse of waste resources, and effectively improve the strength of composite materials, reduce hygroscopicity, and enhance water resistance. The structure of the composite material is more orderly and the composition is more diverse. The preparation method of the composite material in the present invention has simple raw material treatment, no dewaxing, no washing, no separate separation of cellulose, reduced separation steps, reduced dispersion of powder in the environment, and protected the health of on-site operators. Strong and easy to implement. The composite material of the present invention has wide applications, and can be used in the manufacture of furniture, toys, containers, automobile decoration parts, daily necessities, etc. instead of wood and plastics.

The invention discloses an organic Li-based bentonite-WPU (waterborne polyurethane) leather finishing agent and a preparation method thereof. The method comprises the following steps: firstly, carrying out organic modification on Li-based bentonite so as to prepare organic Li-based bentonite; and then, dispersing the organic Li-based bentonite into a WPU matrix in nano scale by using a latex commixing or in-situ polymerization method so as to obtain the organic Li-based bentonite-WPU leather finishing agent. In the invention, because quaternary ammonium salts, organic amines, a coupling agentand polyisocyanates are selected to carry out organic modification on Li-based bentonite, the surface microenvironment of a chain-connected silicate layer of the Li-based bentonite and the wetting action (on polymers) of the Li-based bentonite are improved, thereby enhancing the dispersibility of the Li-based bentonite in organic polymers and the compatibility of the Li-based bentonite and the organic polymers, and better facilitating the expression of nano effects; and because the Li-based bentonite with a two-dimensional nanostructure is introduced into the WPU matrix by using a latex commixing or in-situ polymerization method, therefore, due to the unique structure and properties of a nano-clay, while the transparency of a finishing material is not affected, the thermal stability, friction-resistant strength and water vapor permeability of the finishing material can be improved markedly, and the mechanical properties of the finishing material are also enhanced and toughened.