2results about How to "Improve efficient utilization" patented technology

The present application belongs to the technical field of circular lifting belt, and particularly relates to a production method of circular lifting belt, comprising the following steps: using a first filament to bundle a plurality of parallel arranged filaments into a filament bundle body; winding the filament bundle body into a ring shape after passing through a leather, and the front end of the filament bundle body passes through the leather multiple times; winding a second filament from the front end of the filament bundle body before the front end of the filament bundle body passes into the leather, and the second filament is continuously wound outside the multiple turns of the filament bundle body during the multiple times of the filament bundle body passing into the leather; after the filament bundle body is wound for a specified number of turns, the tail of the filament bundle body is cut off to splice the head and tail of the filament bundle body; and the leather is stretched and sewn to obtain the circular lifting belt. The present application realizes the control of the neatness of the filaments by bundling the plurality of filaments and bundling the multiple turns of the filament bundle body, can make the lifting belt achieve higher filament utilization rate in the stretching use, and improve the breaking load.

This invention discloses a color-tunable room-temperature phosphorescent carbon dot composite material based on minoxidil, its preparation method, and its applications. The composite material is synthesized in situ through a one-step thermal treatment of the clinical drug minoxidil (MND) and boric acid (BA) in an aqueous phase. Minoxidil, as a carboxyl-free aminopyrimidine molecule, partially forms nitrogen-doped carbon dots during pyrolysis, while some exist in an incompletely carbonized molecular state. Both are firmly anchored in a BA-derived rigid borosilicate glass matrix via B–N covalent bonds, effectively suppressing nonradiative transitions of triplet excitons. By controlling the doping amount of minoxidil (preferably an MND:BA mass ratio of 1:60 to 1:3), the phosphorescent emission color of the material can be continuously tunable from blue to green, achieving a maximum photoluminescence quantum yield of 20.9% and a room-temperature phosphorescent lifetime of up to 1.43 seconds. This composite material has significant application value in fields such as multi-level dynamic information encryption, time-resolved anti-counterfeiting, and intelligent optical devices.