3results about How to "Limit slip" patented technology

The present application relates to the technical field of external use patch, disclose a kind of neck shoulder waist leg pain health care patch and its preparation method, the health care patch includes backing layer, ointment layer and anti-adhesion release layer;Ointment layer raw material includes: traditional Chinese medicine extract flow leaching paste, L- (+) -tartaric acid, PVP K30, PEG-400, ternary eutectic solvent, polyacrylate pressure sensitive adhesive matrix and ultrafine medicinal powder.Preparation, after flow leaching paste, tartaric acid etc. are mixed, gel precursor is formed by vacuum dewatering and dealcoholization, swelling is added again with eutectic solvent, and then mixed with pressure sensitive adhesive matrix and medicinal powder high shear, finally coating solidification.The present application constructs physical crosslinking gel network in colloid interior and promotes effective component acid-base salt formation, effectively avoids polar component crystallization precipitation, reduces the skin irritation caused by drug burst release, simultaneously improves the cohesion of ointment, realizes long-acting smooth drug release.

This invention discloses a highly elastic and resilient vinyl elastomer and its preparation method. The method includes: solution polymerization of ethylene, comonomers, and functional monomers in the presence of a catalyst to obtain a vinyl copolymer precursor; subsequently, dissolving the precursor in an organic solvent, adding a ring-closing reagent to perform an intramolecular ring-closing reaction, and adding a monofunctional end-capping agent to terminate the reaction; and obtaining the vinyl elastomer after separation, washing, and drying. By controlling the monomer feed in stages, a gradient structure is formed in the molecular chain, with ethylene-rich segments at both ends and α-olefin-rich segments in the middle. Combined with the intramolecular ring-closing structure, topological constraints are introduced, significantly improving the material's elastic recovery performance while maintaining thermoplastic processability. The resulting material exhibits a resilience of over 63%, a compression set of less than 24%, a melt strength of over 7.1 cN, and a gel content of less than 1.2%.

This invention relates to the field of cable technology and proposes a high-strength overhead insulated conductor, comprising a conductor and an insulation layer arranged sequentially from the inside out. The insulation layer comprises the following raw materials: polyethylene, ethylene-vinyl acetate copolymer, maleic anhydride-grafted polyethylene, reinforcing agent, antioxidant, ultraviolet absorber, and lubricant. The reinforcing agent includes modified silica, which is obtained by modifying silica with a silane coupling agent and polybutylene terephthalate. The conductor insulation layer provided by this invention has good tensile strength, solving the technical problem of insufficient strength of existing overhead insulated conductor insulation layers.