6results about How to "Increase density" patented technology

This invention discloses an acid and alkali resistant polyamide membrane and its preparation method. The method is as follows: S1: Immerse the ultrafiltration base membrane in an aqueous sodium hydroxide solution for soaking and then set aside; S2: Treat the base membrane with a mixed aqueous solution of polyamine and aziridine crosslinking agent; S3: Wet the base membrane in an organic phase solution of polyacrylamide monomer to obtain a polyamide composite membrane; S4: Immerse the prepared polyamide composite membrane in an alcoholic solution of hydroxymethyl crosslinking agent, then dry it in a forced-air drying oven, and after washing with water, obtain the acid and alkali resistant polyamide membrane. This application uses two crosslinking agents, aziridine and hydroxymethyl, which can undergo specific crosslinking reactions with the carboxyl groups inside the polyamide membrane, to directly perform dual crosslinking modification on the membrane interior and surface, without introducing other polymer materials to avoid excessive increase in membrane permeation resistance. The polyamide membrane prepared by this method has both good acid and alkali resistance and water permeability.

The application provides a method for reducing thermal damage of a cooling medium and a laser processing array. The method can reduce or even avoid the formation of a thermal damage area of the laser processing, improve the processing quality, and particularly can improve the density of an array structure, and obtain a ceramic product containing a high-integration array structure.

This invention discloses a brewing method for "Lanzhongyin" craft beer, possessing a unique flavor, belonging to the field of beer brewing technology. This method uses water, Australian barley malt, Australian wheat malt, and oat flakes as base ingredients, combined with liquid yeast and imported hops. It emphasizes the addition of bitter orange peel and coriander seeds as flavor modifiers. Through optimized processes such as saccharification, boiling, fermentation, and aging, the refreshing fruity aroma of bitter orange peel and the unique spiciness of coriander seeds are deeply integrated, solving the technical problems of existing craft beers having a single flavor profile and insufficient complexity. The "Lanzhongyin" craft beer brewed by this invention has a refreshing and smooth taste, combining the richness of malt, the delicate aroma of hops, and the unique complex flavor brought by bitter orange peel and coriander seeds. It has high flavor recognition, a simple and controllable process, is suitable for large-scale production, and enhances the product's market competitiveness.

The application relates to a point cloud processing method and device. The method comprises the following steps: determining a first transformation matrix corresponding to adjacent first and second point cloud frames through a particle swarm optimization algorithm; rotating and / or translating an original coordinate system of the first point cloud frame through the first transformation matrix to obtain a first coordinate system corresponding to the first point cloud frame; and superimposing first point clouds in the first point cloud frame into the second point cloud frame according to the first coordinate system, a driving speed of a device, and a time difference between the first and second point cloud frames. The scheme provided by the application can increase the density of point clouds and improve the recognition ability of a laser radar for long-distance obstacles.

The application discloses a shell reinforcing method of lithium residue-based non-burning light aggregate and the lithium residue-based non-burning light aggregate after shell reinforcing. The shell reinforcing method comprises the following steps: S1, mixing lithium smelting residue, solid waste and auxiliary materials to obtain mixed materials; S2, performing initial granulation treatment on the mixed materials to obtain green balls; S3, performing round-pot granulation treatment on the green balls to obtain shell reinforced green balls; and S4, performing curing treatment on the shell reinforced green balls to obtain the lithium residue-based non-burning light aggregate. According to the shell reinforcing method, after the green balls are obtained through initial granulation, the round-pot granulation treatment is performed, the special granulation mode is used, the outer shell of the lithium residue-based non-burning light aggregate is mechanically reinforced, the compactness of the surface of the lithium residue-based non-burning light aggregate is improved under the condition of ensuring the same bulk density, and thus the cylinder pressure strength is improved and the water absorption rate is reduced.

The application relates to the technical field of ceramic preparation, and provides a preparation method of high-thermal-conductivity aluminum nitride ceramic, which solves the problems of relatively poor thermal conductive performance and bending strength of the aluminum nitride ceramic prepared by the prior art; the method comprises the following preparation steps: 1) raw material preparation; 2) ball milling mixing; 3) preheating reduction; and 4) hot-pressing sintering.