7results about How to "The process is simple and reliable" patented technology

This invention provides the application of a mixture of methylstyrene with high para-isomer content in the preparation of polystyrene substitute copolymers, belonging to the field of polymer material synthesis technology. This invention is the first to directly utilize a low-cost mixture of methylstyrene isomers to replace high-purity styrene. Through a "boiling-condensation" cycle in the fluidized bed polymerization process, efficient and constant-temperature heat dissipation is achieved, effectively overcoming the heat transfer difficulties and temperature runaway risks of traditional bulk polymerization. This facilitates control of the polymerization mechanism and yields random copolymers with a narrow molecular weight distribution and mechanical properties comparable to general-purpose polystyrene. This method is simple and controllable, significantly reduces raw material costs, and combines economic benefits with environmental value. The resulting copolymers can be used in general plastics, packaging materials, and other fields.

An air heat exchanger and its manufacturing method are disclosed. The air heat exchanger includes a honeycomb panel and heat exchange tubes. The honeycomb panel includes a plurality of pores extending along a first direction. The heat exchange tubes include an inlet pipe, an outlet pipe, and heat exchange tubes connected in series or parallel between the inlet pipe and the outlet pipe. The heat exchange tubes are disposed within the honeycomb panel and extend along a second direction perpendicular to the first direction. The air heat exchanger of this invention comprises a honeycomb panel and heat exchange tubes, with some heat exchange tubes disposed within the honeycomb panel and in close contact with it. The honeycomb panel provides a large heat exchange area per unit volume. Combined with the vertical through-hole design of the heat exchange tubes, an extremely short heat conduction path is created, enabling the heat exchanger to reduce its volume by more than 30% compared to traditional finned tube heat exchangers for the same heat exchange capacity, achieving true high efficiency and compactness.

The invention discloses a flexible GaAs photovoltaic device with a bidirectional light trapping structure and a preparation method, and belongs to the technical field of solar cells. The device comprises an anti-reflection functional layer, a top electrode, a photovoltaic epitaxial layer, a back electrode and a flexible substrate from top to bottom. The anti-reflection functional layer is a columnar array formed by photoresist doped with high-refractive-index nanoparticles, and is used for broadband and wide-angle anti-reflection; and the back electrode is a metal layer covering the patterned insulating pyramid array to form a diffuse reflection back mirror. The micro-nano structures on the front and back surfaces achieve a synergistic effect, bidirectional light trapping is achieved, and the light trapping capability is greatly improved. According to the preparation method, low-temperature patterning processes such as 3D direct writing, nanoimprint, ink-jet printing and the like are adopted in the whole process, the flexible substrate is perfectly compatible, and the problems of damage and high cost caused by a traditional high-temperature etching process are solved; and meanwhile, high efficiency, high flexibility and low cost are realized, and the method is particularly suitable for the high-end flexible electronic fields of wearable equipment, aerospace and the like.

The application discloses a wall-mounted air communication equipment damping device. The device comprises a support, guide nails, guide sleeves and metal rubber column vibration isolators, wherein two fixed legs are installed on one side of the air communication equipment body, two guide sleeves are installed on the other side of the air communication equipment body, two guide nails are installed on the support corresponding to the two guide sleeves, and two fixed legs are installed corresponding to the body; during installation, first, the fixed legs on one side of the air communication equipment body are installed on the body through the metal rubber column vibration isolators, then the guide nails on the support are aligned with the guide sleeves of the air communication equipment body and are pushed into complete cooperation, and finally, the fixed legs of the support are installed on the body through the metal rubber column vibration isolators. The application has the advantages of small volume, simple and reliable process, convenient installation and maintenance, improved anti-vibration performance and reliability of the air communication equipment, and meets the application requirements of the wall-mounted installation of a new generation of aircraft platform equipment or limited space resources.

This invention discloses a manufacturing process for a hexagonal flow channel pipe fitting, comprising the following steps: A1: Fabricating two symmetrical semi-circular solid parts, which, when joined together, form a circular part; A2: Creating grooves on the opposing surfaces of the two solid parts, the grooves extending along the length of the solid parts, forming a hexagonal flow channel in the middle when the two solid parts are joined; A3: Creating inclined surfaces on the opposing surfaces of the two solid parts, located on both sides of the grooves, forming a weld seam area between the two opposing inclined surfaces when the two solid parts are joined; A4: Welding and fixing the two solid parts within the weld seam area to obtain the hexagonal flow channel pipe fitting; A5: Welding flanges to the ends of the hexagonal flow channel pipe fitting. This invention can fabricate precisely dimensional hexagonal flow channels inside the pipe fitting, with a simple and reliable process, and the produced pipe fitting meets quality requirements.

The application discloses a PVD device and process method integrating evaporation and sputtering functions. The device creatively adopts a "vacuum sealed tunnel" architecture, linearly connecting multiple chambers such as etching, sputtering and evaporation, to ensure that the substrate is not exposed to the atmosphere throughout the process. The core includes a liftable dynamic sealing evaporation source module, which effectively solves the pollution problem of evaporation process on integrated equipment through the coordinated timing action of bellows connection, lifting mechanism and shielding plate. The device is equipped with a full-automatic control system, realizing one-key completion of complex processes. The application creates a process condition for replacing high-stress sputtering with low-stress evaporation through integration, which is particularly suitable for preparing high-performance solar cell back electrodes, and has the outstanding advantages of eliminating pollution, optimizing stress, improving yield and efficiency.

The embodiment of the invention provides a vehicle control method and device, electronic equipment and a vehicle. A first planned path corresponding to a rear axle of the vehicle is obtained according to an initial planned path of the vehicle, and obstacle information around the vehicle is obtained; determining a second planned path corresponding to the front end of the vehicle according to the first planned path; according to the obstacle information, determining the minimum projection distance between the obstacle and the first planning path and the minimum projection distance between the obstacle and the second planning path; determining a comprehensive distance between the obstacle and the initial planning path according to the displacement of the obstacle relative to the first planning path and the minimum projection distance; and controlling the vehicle to run according to the corresponding acceleration or the corresponding braking parameters according to the comprehensive distance. According to the embodiment of the invention, the comprehensive influence of the vehicle contour and the obstacle on the planned path can be fully considered while the demand for computing resources is reduced, and the output and response efficiency of the vehicle control instruction is improved.