2results about How to "Uniform stiffness" patented technology

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.

The application discloses a kind of composite fabric with double-sided hetero-functional and preparation method thereof, adopt the three-layer composite structure of first functional layer, intermediate layer, second functional layer from inside to outside in turn, interlayer is connected by adhesive, through the synergistic effect of double-charge surface and adhesive of intermediate layer, interlayer bonding is reinforced by electrostatic attraction direction, simultaneously charge repulsion effect blocks anion hydrophobic agent and cationic hydrophilic agent molecule mutual penetration, avoid function mutual interference;When the deformation of concave quadrilateral negative poisson's ratio structure, intermediate layer flexible base cooperates controllable gap deformation to absorb stress, prevent interlayer peeling or functional layer wrinkle, charge layer also keeps stable distribution due to electrostatic constraint;Finally realize the synergistic effect that structure stiffness is uniform under dynamic deformation, interlayer peeling strength is significantly improved, and the dual needs of structure stability and function reliability in dynamic scene such as intelligent wearing are considered.