3results about How to "Reduce penetration rate" patented technology

This invention relates to the field of corrosion-resistant special cables, specifically to a solvent-resistant and corrosion-resistant cable and its manufacturing method, comprising a conductor unit, an insulation protection unit, a shielding unit, a barrier protection unit, and an outer sheath unit arranged sequentially. The conductor unit is made of oxygen-free copper wire stranded together, with gaps filled with fluoroether-based corrosion-resistant sealant and cured at high temperature. The insulation protection unit is a three-layer co-extruded structure of modified cross-linked polyethylene with added nano-montmorillonite. The shielding unit is a double-layer reverse braided tin-plated copper wire with a polyurethane corrosion-resistant passivation coating on the surface. The barrier protection unit is a double-layer overlapping wrapping of aluminum-plastic composite tape and water-blocking and corrosion-resistant composite tape. This invention significantly improves the service stability and service life of the cable in complex corrosive environments, eliminates the need for additional corrosion-resistant outer sheath structures, reduces engineering application costs, and is suitable for power transmission needs in various scenarios such as chemical, marine, and new energy industries, possessing high application value.

This application belongs to the field of packaging film technology, specifically providing a modified PE film and its preparation method. A modified PE film comprises the following components: a PE film, a modified polyvinyl alcohol coating solution, and zinc stearate; the modified polyvinyl alcohol coating solution is prepared by mixing polyvinyl alcohol, tannic acid, and nano-hydroxyapatite. The modified PE film obtained by this application has good mechanical properties and barrier properties.

This invention provides a PDA / ODT-ODTMS composite coating and its preparation method, relating to the field of metal surface protection technology. The coating comprises, from the inside out, a polydopamine intermediate layer and a co-deposited functional layer of n-octadecyl mercaptan / octadecyltrimethoxysilane. The preparation method involves first electrodepositing a PDA intermediate layer on the substrate surface, then immersing it in an aqueous micelle deposition solution composed of n-octadecyl mercaptan, octadecyltrimethoxysilane, and a surfactant, and forming the composite functional layer through isothermal chemical deposition. This invention, through molecular-level co-deposition of ODT and ODTMS combined with an aqueous micelle process, constructs a firmly adhered, dense, and highly hydrophobic protective barrier on the metal surface, significantly improving the long-term corrosion resistance and stability of the coating, while also making the preparation process safer and more environmentally friendly.