3results about How to "Many gaps" patented technology

This invention provides a method for preparing cellulose materials that delay CO2 release from water, belonging to the field of carbon emission reduction applications. It involves modifying cellulose materials with amine groups to form biodegradable cellulose materials loaded with tertiary or secondary amine groups. The epoxidation grafting method in this invention achieves cellulose modification through alkali treatment, epoxidation, and amination grafting; the glutaraldehyde crosslinking method uses glutaraldehyde as a crosslinking agent to connect the cellulose material and organic amines to achieve cellulose modification. This method further increases the residence time of CO2 in water by adsorbing and converting CO2. Compared with unmodified cellulose materials, the modified material can reduce the amount of CO2 released from water by more than 60%, which helps to construct a CO2 slow-release system in water and can assist in improving the actual utilization efficiency of CO2 gas by microorganisms.

The invention discloses an antibacterial air filtering material as well as a preparation method and application thereof. The preparation method comprises the following steps: opening and carding low-melting-point fibers and 2D fibers, and then conveying the fibers and the 2D fibers into a lapping machine to lay a fiber net; conveying the fiber net to a hot pressing roller for heating, pressing and shaping to obtain filter base cloth; the filtering base cloth is introduced into a melt-blown line spraying shaft; polypropylene particles and a silver ion antibacterial agent are mixed and then put into a heating bin for melt-blowing, melt-blown polypropylene fibers adhere to the outer surface of the filter base cloth, and a PP melt-blown layer is formed; the air filter cloth is obtained; spraying an antibacterial viscose solution on the PP melt-blown layer of the air filter cloth at high pressure; the air filter cloth is conveyed to drying equipment to be dried and shaped, and edge cutting and rolling are conducted. The air filtering material has a double-layer structure with a fluffy upper layer and a dense lower layer, and has antibacterial and antiviral functions, and the filter cloth can still keep high-efficiency filtering and antibacterial effects after being washed repeatedly.

This application provides a pine cone-shaped photothermal evaporator and its preparation method, relating to the field of solar seawater desalination technology. The preparation method utilizes a silica-polypyrrole double-shell structure design to fabricate PPy-PCMs microcapsules that possess both high photothermal conversion efficiency across the entire spectrum and stable, reversible phase change heat storage function. A composite membrane is obtained by sequentially spraying a nanofiber suspension and a PPy-PCMs dispersion onto a substrate. The composite membrane is then cut into strips and radially fixed to the surface of a hydrophilic cotton rod, assembling them to form a biomimetic pine cone-shaped photothermal evaporator. This biomimetic pine cone-shaped photothermal evaporator exhibits stable structure, leak-proof and heat-resistant properties, excellent light absorption efficiency, and low thermal conductivity. It maintains high evaporation performance under both light and dark environments, demonstrates significant desalination effects, and maintains stable operation even in high-salinity water bodies, providing an efficient solution for all-weather water purification.