6results about How to "High bonding reliability" patented technology

This application provides a glue-applying robot, comprising: a vehicle body; a glue-applying mechanism connected to the vehicle body; and multiple wheels connected to the underside of the vehicle body. Each wheel is equipped with an individual lifting mechanism, which is vertically connected to the vehicle body to drive the wheel to move up and down relative to the vehicle body. In this application, the glue-applying robot can perform glue-applying operations at different heights, greatly expanding its applicable scenarios. Furthermore, the robot enables rapid movement across corrugated ribs, significantly reducing the workload of the operator and improving the glue-applying efficiency.

To provide a novel Cu bonding wire that achieves a favorable FAB shape and a favorable bondability of the 2nd bonded part, and further achieves favorable bond reliability of the 1st bonded part in a high-temperature environment. The bonding wire for semiconductor devices includes: a core material of Cu or Cu alloy; and a coating layer containing conductive metal other than Cu formed on a surface of the core material, wherein the coating layer has a region containing Ni as a main component on a core material side, and has a region containing Au and Ni on a wire surface side, in a thickness direction of the coating layer, a thickness of the coating layer is 10 nm or more and 130 nm or less, a ratio CAu / CNi of a concentration CAu (mass%) of Au to a concentration CNi (mass%) of Ni relative to the entire wire is 0.02 or more and 0.7 or less, and a concentration of Au at the surface of the wire is 10 atomic% or more and 90 atomic% or less

The invention provides a universal surfactant and a preparation method thereof.The preparation method of the universal surfactant comprises the following steps that S1, a titanate cross-linking agent and a silane coupling agent are mixed and stirred, and a first mixture is obtained; s2, adding a hydrocarbon solvent into the first mixture, and stirring to obtain a turbid second mixture; s3, adding an alcohol solvent into the second mixture, and stirring to obtain a clarified third mixture; and S4, adding a catalyst into the third mixture, and stirring to obtain the universal surfactant. The universal surfactant is non-corrosive, has wide applicability to various base materials and adhesives, can effectively improve the bonding performance of low-surface-energy base materials, and integrates the polyurethane adhesive and the silica gel, and the preparation method is simple, stable and controllable, clear in process index and convenient for industrial large-scale production and popularization.

The invention discloses a prism bonding structure and bonding method, the prism bonding structure is used for bonding a racemization prism, and the prism bonding structure comprises a prism mounting seat, a prism cover plate and a pressing ring; the prism mounting seat comprises a bottom plate, and two opposite side surfaces of the bottom plate are respectively provided with a first side plate and a second side plate; the second side plate is provided with a tool pressing plate. The other two opposite side faces of the bottom plate are provided with a positioning block and a detachable tool baffle respectively. The first side plate, the tool pressing plate, the positioning block and the tool baffle plate position the prism from four directions; a plurality of bosses are also symmetrically arranged on the bottom plate, a plurality of threaded holes are also symmetrically formed in the prism cover plate, and threads corresponding to the threaded holes are formed in the pressing ring; the prism cover plate covers the prism mounting base, the pressing ring is rotated to enable an interval with the thickness of an adhesive layer to exist between the pressing ring and the prism, the adhesive layers are arranged on all the bosses and the plane of the pressing ring, and the prism is bonded through the arranged adhesive layers. The structure and the bonding process are simple, and the installation and adjustment efficiency and the position precision of the prism in the vibration environment are improved.

The invention discloses a layered forming method for a solid rocket engine lining, firstly, a bottom layer slurry is uniformly coated on the surface of an insulation layer, and the bottom layer slurry is pre-reacted to obtain a surface-dry bottom layer of the lining layer; then, an intermediate layer slurry is uniformly coated on the surface of the surface-dry bottom layer of the lining layer, and the intermediate layer slurry is pre-reacted to obtain a gelled lining intermediate layer, and in this process, the bottom layer of the lining layer will also reach a gelled state; then, after the surface layer slurry is coated on the surface of the gelled lining intermediate layer, a propellant slurry is poured; finally, the gelled lining bottom layer, the intermediate layer, and the surface layer slurry coated on the surface of the gelled lining intermediate layer are cured and formed together with the propellant slurry to complete the interface bonding. The invention can increase the interface bonding strength by more than 20%, effectively improve the problem of the weak strength layer of the propellant near the interface, and improve the reliability of the interface bonding of the solid rocket engine charge.

The invention belongs to the field of adhesives, and provides PMMA (polymethyl methacrylate) glue with viscosity regulated and controlled by glacial acetic acid and a preparation method of the PMMA glue. According to the invention, a dual design of synergistic viscosity reduction of a PMMA matrix and free glacial acetic acid and slow release regulation and control of the PMMA-coated glacial acetic acid microcapsule is adopted, accurate regulation and control of the viscosity in a range of 500-50000 mPa.s are realized by controlling the dosage of glacial acetic acid in a range of 2-15 parts by mass, and meanwhile, the microcapsule component gradually releases glacial acetic acid in a glue drying process, so that the viscosity of the microcapsule is reduced, and the viscosity of the microcapsule is reduced. The viscosity rise caused by solvent volatilization is compensated, low viscosity, easy construction and high cohesion strength after drying are guaranteed, the problems that the construction performance and curing strength of traditional PMMA glue are difficult to balance, a high-solid-content system is difficult to defoam, and the storage viscosity stability is poor are solved, and the PMMA glue has wide industrial application value.