5results about How to "Strong stress" patented technology

The invention discloses a modified positive electrode material and a preparation method and application thereof, and belongs to the technical field of secondary battery raw materials. The modified positive electrode material provided by the invention comprises a layered positive electrode material; the chemical formula of the layered positive electrode material is LiXO2, wherein X is at least one of Ni, Co and Mn; the coating layer is a two-dimensional MOF material which is deposited on the surface of the layered positive electrode material in situ; the molar ratio of X in the layered positive electrode material to a central atom in the two-dimensional MOF material is 1: (0.1-2.0). According to the modified positive electrode material provided by the invention, the high-temperature cycling stability and the high-rate charge-discharge stability of the modified positive electrode material can be effectively improved. The invention also provides a preparation method and application of the modified positive electrode material.

The present application relates to the technical field of ceramic coating, especially to a micro-nano structure ceramic coating and its application on the reaction furnace of zircon sand boiling chlorination method, aiming at solving the problems of weak bonding force between the existing protective coating and the substrate, poor thermal shock resistance and easy failure in long-term high-temperature chlorine environment; the present application constructs a nano-wire reinforced micro-nano structure transition layer on the surface of porous corundum brick substrate in situ, and sequentially constructs a lanthanum phosphate bonding layer and a yttrium stabilized zirconium oxide barrier layer on the transition layer; the design utilizes the mechanical anchoring effect of micro-nano structure and the strong chemical bonding ability of lanthanum phosphate to realize the firm combination of the coating and the substrate; the dense characteristics of the zirconium oxide layer provide ultimate protection; the method significantly improves the overall anti-peeling ability and long-term corrosion resistance of the coating system.

The invention discloses an acidic copper plating additive which is characterized by comprising the following components: 28-32 g / L of copper sulfate, 22-28 g / L of sulfuric acid, 10-14 g / L of red dye, 78-82 g / L of blue dye, 4-6 g / L of acid copper yellow powder and the balance of deionized water. The formula is simple, the processing and manufacturing cost can be reduced, the current density range of the plating solution can be increased during use, the filling and leveling degree of a plating layer is good, the internal stress of the plating layer is high, the electroplating quality can be improved, and the practicability is high.

The invention provides an anti-deposition wet strength agent quantitative conveying system, and relates to the field of papermaking wet strength agents. The storage tank is in a hollow tank shape, the front side of the top of the storage tank is buckled with a sealing cover, the middle of the top end face of the storage tank is fixedly provided with a stirring motor, one side of the bottom end face of the storage tank is fixedly provided with an anti-deposition motor, the middle of the bottom of the storage tank is rotationally connected with an anti-deposition rotating disc, and the bottom of the rear side of the storage tank is fixedly provided with a conveying motor. And a quantitative conveying unit is fixedly mounted at the rear bottom of the conveying motor bottom storage tank. When the anti-deposition rotating disc rotates, the wet strength agent can be pushed to a backflow opening formed in the bottom of the inner side wall of the storage tank, the wet strength agent is impacted to the top of the anti-deposition rotating disc from the backflow outlet through a pipeline connected with the backflow opening and the backflow outlet, and the situation that the wet strength agent is deposited in a negative pressure area between adjacent anti-deposition driving levers at the top of the anti-deposition rotating disc is avoided; the aggregation structure among molecules of the wet strength agent is destroyed, and the deposition problem of the wet strength agent during storage and conveying is solved.

The road surface structure of the cross level crossing suitable for signal lamp control comprises a left hard road shoulder, an overtaking lane, a traffic lane and a right hard road shoulder, and the left hard road shoulder, the overtaking lane and the right hard road shoulder are all semi-rigid asphalt road surfaces; the traffic lane is characterized in that the traffic lane is a continuous reinforced concrete pavement at a brake road section which is 200-400m long close to the level crossing controlled by the signal lamp, a cement stabilized macadam base layer is arranged below the continuous reinforced concrete pavement, and an isolating layer is arranged between the continuous reinforced concrete pavement and the cement stabilized macadam base layer below the continuous reinforced concrete pavement. According to the road surface structure of the cross level crossing suitable for signal lamp control, the continuous reinforced concrete road surface has higher shear stress resistance and compressive stress resistance, so that ruts cannot be generated on a brake road section formed by the continuous reinforced concrete road surface when a vehicle brakes on the brake road section, the service life of the road is prolonged, and the traffic safety is improved. And the driving safety is ensured.