43results about How to "Stable weather resistance" patented technology

The invention discloses an optical fiber hydrogen-sensitive sensor, a preparation method and a hydrogen leakage detection device, the optical fiber hydrogen-sensitive sensor comprises an optical fiber sensor and a hydrogen-sensitive film coating an optical fiber sensing area of the optical fiber sensor, and the raw material formula of the hydrogen-sensitive film comprises a hydrogen-sensitive material and a binder, the hydrogen-sensitive material is one or a combination of more of a titanium dioxide hydrogen-sensitive material and a tungsten trioxide hydrogen-sensitive material; wherein the titanium dioxide hydrogen sensitive material comprises tetrabutyl titanate and PdCl2, and the mass ratio of the tetrabutyl titanate to the PdCl2 is 190-200: 1; the tungsten trioxide hydrogen sensitive material comprises WO3 and lanthanum nitrate, wherein the molar ratio of lanthanum to W is 1: 100-1: 40. According to the optical fiber hydrogen-sensitive sensor disclosed by the invention, a hydrogen-sensitive film and an optical fiber micromachining technology are fused, a software monitoring system is developed, full-coverage blind-area-free real-time monitoring is realized, and the problems that the number of detection blind areas in a local area is large, leakage cannot be found in time, and the workload of manual inspection is large are solved.

The invention relates to a sandwich heat-preserving decorative board with mixed hollow porous fiber reinforced heat-preserving mortar and a manufacturing method.A heat-preserving core veneer of the heat-preserving decorative board is a formed veneer and provided with big and round through holes; a hanging part capable of being positioned is arranged at the inner side of a back plate and tightly attached to the back face of the heat-preserving core veneer, and the same big and round through holes are formed in the positions corresponding to the big and round holes in the heat-preserving core veneer; the ends of the hanging part capable of being positioned are provided with small and round holes, square holes and right-angled hooks used for connecting, installing and lapping the heat-preserving decorative board in a positioning mode; fiber grid cloth is arranged at the inner side of a panel and is spaced from the heat-preserving core veneer by 2 mm; the mixed hollow porous fiber reinforced heat-preserving mortar is poured into the periphery of the heat-preserving core veneer through sealed formworks, the panel, the back plate and sealed edges are formed after the mortar is hardened, and bridge-cutoff shear connectors are formed in the big and round holes; the decorative board has the advantages that a good integrated space stress structure is formed through overall pouring of the panel, the back plate, the bridge-cutoff shear connectors and the sealed edges, positioning and splicing are accurate, and the fireproof performance is improved.