2results about How to "Structural refinement" patented technology

The invention belongs to the technical field of semiconductors, and discloses a composite coating for a semiconductor device and a preparation method thereof.The preparation method comprises the following preparation steps that organic resin and a carburant are added into an alcohol solvent to be evenly mixed, and a resin solution is obtained; the method comprises the following steps: adding a tantalum source and a phase forming accelerant into an alcohol solvent, stirring and mixing to obtain a tantalum solution; the surface of the base body is coated with a resin solution and a tantalum solution, heating curing, carbonization and cooling are carried out, a composite coating containing glassy carbon and tantalum carbide is obtained, and the composite coating is of a single-layer structure or a double-layer structure; the single-layer structure is a composite single-layer coating containing glassy carbon and tantalum carbide; the double-layer structure is a double-layer coating structure comprising a glassy carbon layer and a glassy carbon and tantalum carbide composite layer from bottom to top from one side of the surface of the base body. The density of the composite coating prepared by the method can be effectively improved, so that the corrosion resistance of the composite coating in a plasma environment is improved.

The application discloses a preparation method and application of a collagen packaging film, and belongs to the technical field of bio-based food packaging materials. According to the method, animal-derived collagen is dissolved in an acetic acid solution with a pH of 3.5-4.5 to form a solution with a concentration of 3-5%, and then 15-25% of genipin and 8-12% of cellulose nanowhiskers by dry weight of the collagen are added in sequence to perform a cross-linking reaction at 35-40 DEG C, so as to construct a three-dimensional network structure. Subsequently, the solution is soaked in 70-80% ethanol containing 0.5-1.5% propyl gallate, and the surface hydrophobicity is improved through the specific combination of phenolic hydroxyl groups and the hydrophobic region of collagen. Finally, vacuum drying and 60-70% humidity environment balancing treatment are performed, so that the degradable film material with high mechanical strength and moderate waterproofness is obtained. The preparation method is especially suitable for the preservation packaging of chilled meat products, and can effectively prolong the shelf life of food while maintaining the biodegradability of the material.