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 discloses an insulation adhesive material for a compound photovoltaic backsheet and application. The insulation adhesive material is composed of a component A and a component B. The component A contains matrix resin, assistant resin and an assistant, wherein the matrix resin is hydroxyl polyester resin, which has a hydroxyl value of 5-30mgKOH / g, an acid value of 0.2-5mgKOH / g, a number-average molecular weight of 5000-50000, a glass transition temperature ranging from -40DEG C to 30DEG C, and is prepared by esterification polycondensation reaction of small molecular polyprotic acid and polyol under inert gas protection. The component B is a crosslinked component. During use, the component A and the component B are mixed in different proportions according to requirements. The insulation adhesive material provided by the invention not only has long-term and stable bonding performance, but also has excellent performance in heat resistance, insulation and weatherability, and can be used for preparation of high weather resistant compound photovoltaic backsheets. Also, the raw materials are easily available, the process is controllable, and the operation is simple.

The invention discloses a steel forge piece and a machining method thereof. The problem that the overall performance of an austenitic stainless steel forge piece prepared through an existing machiningmethod is solved. According to the technical scheme, the steel forge piece comprises chemical components including, by mass, not larger than 0.08% of C, not larger than 2.20% of Mn, not larger than 1.50% of Si, not larger than 0.02% of P, not larger than 0.025% of S, 11%-13% of Cr, 2.00%-8.00% of Ni, 0.30%-0.60% of Mo, 1.50%-3.50% of Cu, not larger than 0.60% of Nb, not larger than 0.25% of V andthe balance Fe. The prepared forge piece has the beneficial effects of high strength, high tenacity, corrosion resistance, abrasion resistance, high weather fastness, high temperature resistance, lowtemperature resistance, high stability and the like.

The present invention discloses one kind of automobile battery protecting cover and its production process, and features that the automobile battery protecting cover is produced with hollow PP plate and through cutting edge, punching hole, impressing and high frequency welding. The automobile battery protecting cover has excellent performances, including sound absorption, heat isolating, ageing resistance, environment friendship, etc. and the production process has high production efficiency.

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.

The invention discloses a steel forging resistant to compression and corrosion, and a machining method thereof. The problem of low comprehensive performance of austenitic stainless steel forgings manufactured with an existing machining method is solved. According to the technical scheme, the steel forging resistant to compression and corrosion comprises, by weight, no more than 0.08% of C, no morethan 0.50% of Mn, no more than 0.50% of Si, no more than 0.04% of P, no more than 0.03% of S, 11%-12.5% of Cr, 7.50%-9.50% of Ni, 0.40%-0.60% of Mo, 1.50%-2.50% of Cu, no more than 0.60% of Nb, no more than 0.25% of V and the balance Fe. The prepared steel forging has the advantages of high strength and toughness, corrosion and wear resistance, high weatherability, high and low temperature resistance, high stability, etc.