2results about How to "Maintain efficiency" patented technology

This application relates to a gas dispersing device, which falls under the field of gas dispersion technology. It includes a main pipe, branch pipes, secondary pipes, and branch ducts. The secondary pipes are connected to the main pipe, and the branch ducts are connected to the branch pipes via the secondary pipes. Each branch duct has multiple holes, which are evenly distributed along its length and staggered between adjacent holes. This application improves the dissolution efficiency and uniform distribution of gas in a liquid by employing a hierarchical pipe structure and optimized hole placement design. The device uses multiple evenly distributed and staggered holes to improve the uniformity of gas within the pipe, increase the contact area between the gas and liquid, optimize gas emission and dispersion, ensure uniform gas distribution in the liquid, reduce bubble formation, and guarantee stable gas diffusion and dissolution efficiency. This device can be widely applied in water treatment, aquaculture, and wastewater treatment, significantly improving gas dissolution efficiency.

This invention discloses a crystalline polyimide / polyimide composite material, its preparation method, and its applications. The method involves first uniformly mixing phenylhexacarboxylic acid trihydride with a diamine monomer, followed by a solid-phase reaction under argon atmosphere protection. After the reaction, the product is immersed in a polar solvent to obtain crystalline polyimide. Then, the crystalline polyimide is added to an organic solution of polyamic acid, subjected to ultrasonic treatment in an ice-water bath, and subsequently thermosetting to obtain the crystalline polyimide / polyimide composite material. The crystalline polyimide in this composite material has a layered two-dimensional COF structure, giving it relatively high thermal conductivity, heat resistance, and high-temperature mechanical properties. Introducing the crystalline polyimide into the polyamic acid solution utilizes the special interfacial compatibility between the amino groups in the crystalline polyimide and the anhydrides in the polyamic acid to react, solving the problem of difficult processing and effectively expanding its application range.