4results about How to "The preparation process steps are simple" patented technology

The application discloses a workability-strength synergistically enhanced composite admixture for fly ash geopolymer and a preparation method and application thereof, and belongs to the technical field of building materials, and comprises the following raw materials in parts by weight: water reducing agent 40-60 parts, Lewis acid 15-25 parts, low-gravity mineral 5-10 parts and dispersion and enhancement agent 20-30 parts. Through scientific research and practice test, the application successfully prepares the composite admixture with workability-strength synergistically enhanced, can improve the workability of the fly ash geopolymer, and promotes the coagulation and strength development thereof. The composite admixture provided by the application has the advantages of easy-to-obtain raw materials, simple preparation process steps, easy popularization and application in a large range, low cost, wide application, good economic benefit and social benefit.

This invention belongs to the field of catalyst technology, specifically relating to a nickel-based reverse piezoelectric catalyst, its preparation method, and its application. The catalyst uses metallic nickel as both the active component and support, with an oxide loaded on the nickel surface to form the reversed host, and a composite piezoelectric material as the synergistic phase. By total mass, nickel accounts for 50%–95%, the oxide for 1%–50%, and the piezoelectric material for 0.1%–20%. This invention involves mixing and reducing a nickel precursor with an oxide, followed by the composite piezoelectric material to obtain the catalyst. The catalyst utilizes the mechanical force of ball milling and the piezoelectric effect to synergistically catalyze the hydrogenation of carbon dioxide to methane, abandoning traditional high-temperature thermocatalysis. This catalyst can achieve highly efficient carbon dioxide conversion under mild conditions, with 100% methane selectivity and significantly improved reaction efficiency, showing promising application prospects in the field of carbon dioxide resource utilization.

This invention provides an antibacterial polyester amide, its preparation method, and its application. The invention uses caprolactone, caprolactam, and ε-polylysine as raw materials, and tetrabutyl titanate and 6-aminohexanoic acid as catalysts to prepare polyester amide under certain pressure and temperature. The obtained polyester amide has good antibacterial properties against Escherichia coli and Staphylococcus aureus. After culturing for 20 hours according to the method of GB / T31402-2015, the number of colonies can be reduced by more than 85%.

The application discloses a powder core wire for a gearbox valve body with super high strength and toughness, which comprises a powder core and a sheath. The powder core is composed of the following powders in percentage by mass: carbon powder 0.5%, manganese powder 10%-15%, chromium powder 10%-15%, nickel powder 15-20%, titanium powder 1%, silicon powder 1%, molybdenum powder 2%, copper powder 2%, CeO2 powder 1.5%-2%, and iron powder in the rest. The sheath is a low-carbon steel belt. The filling rate of the powder core wire is 20wt%-25wt%. The powder core wire is used for 3D printing to manufacture a super high strength and toughness structural member. The application also discloses a gearbox valve body with super high strength and toughness, a preparation method of the powder core wire for the gearbox valve body with super high strength and toughness, and a preparation method of the gearbox valve body with super high strength and toughness.