5results about How to "Improve long-term use stability" patented technology

This invention discloses a microtexturing treatment and lamination process for the copper foil surface of a low-thermal-expansion high-frequency copper-clad laminate (CCL). Belonging to the field of CCL manufacturing technology, it solves problems in existing CCL technologies, such as the difficulty in balancing peel strength and high-frequency transmission performance, excessively high coefficient of thermal expansion, easy delamination between layers, and patent conflicts. This invention employs a combined plasma etching and chemical micro-etching process to prepare a honeycomb-like pit-column-protrusion composite microtexture on the resin-coated surface of the substrate copper foil. After modification with a fluorine-containing and aminosilane coupling agent and mixed passivation treatment, a surface-modified copper foil is obtained. This foil is then laminated with a low-thermal-expansion high-frequency prepreg containing linear polyarylamide through a segmented preheating, gradual pressure curing, and slow cooling and depressurization process to prepare the CCL. This invention features a simple process, conforms to industrial practice, exhibits excellent overall performance, effectively avoids patent conflicts, and is suitable for high-end fields such as 5G communication and AI servers.

This invention relates to the field of sound insulation technology and discloses a foamed aluminum-gypsum composite partition wall with high sound insulation performance. It employs a five-layer symmetrical composite structure: fire-resistant gypsum board, damping sound-insulating adhesive layer, gradient-pore-sized open-cell foamed aluminum core layer, damping sound-insulating adhesive layer, and fire-resistant gypsum board. Because the foamed aluminum core layer and fire-resistant gypsum board are bonded with environmentally friendly polyurethane structural adhesive and fixed with C-shaped cold-rolled galvanized light steel keel, the interlayer bonding is ensured to be firm and the overall rigidity uniform, preventing delamination and deformation during use. The partition wall joints utilize a double-sealing process of sealant and grooves. Internal flame-retardant sealant fills the gaps to block sound bridges and smoke passages, while external U-shaped PVC grooves combined with butyl rubber sound-insulating pads achieve full enclosure, improving long-term stability. It also boasts advantages such as lightweight, high strength, convenient construction, and good durability.

This invention belongs to the field of ultra-high molecular weight polyethylene (UHMWPE) fiber modification technology, specifically relating to a hydrocarbon-linked boron nitride-modified UHMWPE fiber with high creep resistance and its preparation method. The fiber comprises an UHMWPE matrix and hydrocarbon-linked grafted boron nitride dispersed therein; the hydrocarbon-linked grafted boron nitride is obtained by grafting ω-heptadecenylphosphonic acid onto the surface of hydroxylated nano-hexagonal boron nitride, exhibiting a dual physical crosslinking mechanism. The preparation method includes preparing hydroxylated nano-hexagonal boron nitride, preparing hydrocarbon-linked grafted boron nitride, and preparing high creep-resistant UHMWPE fiber. The method of this invention can significantly improve the creep resistance of the fiber, exhibiting mechanical stability, with a creep rate ≤1.5% after 1000 hours of stress loading at 200 MPa at room temperature. This invention features a simple process, strong adaptability, mild and controllable process parameters, low equipment modification costs, and is easy to industrialize.

The utility model discloses a perovskite assembly junction box, and relates to the field of photovoltaic technology. Comprising a supporting seat, a metal conductive terminal and a diode which are positioned in a box body, the metal conductive terminals can be quickly mounted and positioned through the arrangement of the supporting seat structure; the diode is electrically connected with the pair of metal conductive terminals in advance, through the design of the multi-boss structure of the metal conductive terminals, the stability of electrical connection between the diode and the cable is improved, the long-term use stability of the junction box is further improved, and the failure probability is reduced.

This utility model relates to the field of nail gun technology, and more particularly to a nail gun safety protection device with an adjustable trigger mechanism. It includes a nozzle base, a pressure sleeve, a trigger rod assembly, an axial adjustment disc, a sensing component, and a reset elastic element. The pressure sleeve slides with a limiting pin on the nozzle base via an axial guide groove. The trigger rod assembly includes a front trigger rod and a linkage signal rod. The axial adjustment disc is adjustablely connected to the front end of the front trigger rod via a threaded connection and is fixedly connected to the pressure sleeve. The sensing component uses a non-contact combination of a permanent magnet on the linkage signal rod and a Hall sensor inside the nail gun. The reset elastic element is sleeved on the outside of the pressure sleeve and abuts against a spring mounting groove. This device adjusts the extension length of the trigger rod by rotating the axial adjustment disc, achieving stepless adjustment of trigger sensitivity. It uses magnetic induction instead of mechanical contacts, and the guide limit seat restricts the circumferential rotation of the trigger rod to ensure adjustment accuracy. It has advantages such as convenient operation, stable signal, and efficient maintenance.