31results about How to "The preparation process is clear" patented technology

The invention provides a plugging material for repairing sealing defects of oil-immersed equipment and a preparation device thereof. The material includes two components of a base material and an auxiliary material, wherein: the base material is made of epoxy resin E44, polyacrylate, nano Silica, nano-silicon carbide, nano-calcium carbonate, and nano-zinc powder are mixed and stirred; auxiliary materials are mixed and stirred by FS‑2B curing agent, nano-silicon dioxide, nano-silicon carbide, nano-calcium carbonate, and nano-zinc powder ; The base material is coated on the surface of the leaking equipment, and when the curing hardness reaches 60%±5%, the auxiliary material is coated on the surface of the base material to realize the secondary curing of the base material. The effect is: the substrate not only has the high modulus, high strength and high anti-corrosion properties of epoxy resin, but also has the gloss, fullness and weather resistance of acrylate, and then uses auxiliary materials to cure the surface of the substrate, The solidification is rapid and the strength is reliable, which ensures a strong sealing effect, and it is coated with the surface of the equipment, reducing the change of the prototype of the equipment.

The invention discloses a plane-symmetrical pattern-making method for clothing, which specifically includes the following steps: Step 1. Obtain parameters of basic clothing styles, and draw a canvas rectangle whose vertical length is the length of the object's clothing and the horizontal length is 1 / 2 the width of the object's clothing. , draw the central axis of the canvas rectangle, and obtain the front and rear garment rectangles on both sides of the central axis; Step 2, draw the key points corresponding to the basic clothing styles in the front and back rectangles respectively, using straight lines or The spline curve connects the associated key points to obtain the layout of the basic style of the clothing. The clothing plane symmetrical pattern making method described in the present application confirms the center line of the symmetry axis in the canvas pattern, and then calculates the position in the canvas rectangle of the basic model parameters of the clothing, so as to gradually draw the straight line expressed by the corresponding parameter in the canvas rectangle Or arcs, which standardize the scientific pattern-making steps for garments, and effectively solve the problems of excessively detailed steps in the pattern-making process that were easily neglected in the past.

The invention discloses an intelligent ball picking system based on visual identification and multi-sensor data fusion. A multi-sensor data fusion method is adopted. A first infrared sensor (1-8), a second infrared sensor (1-21), a third infrared sensor (1-22) and a fourth infrared sensor (1-9) are four sensors at fixed positions and can detect barriers at the top corners of an intelligent ball picking device (1). A fifth infrared sensor (1-11) controlled by a fifth steering engine (1-10), a sixth infrared sensor (1-18) controlled by a sixth steering engine (1-17) and a seventh infrared sensor (1-20) controlled by a seventh steering engine (1-19) form three sets of sensors which can swing at angles, the sensors transmit collected data to a control system in real time and detect the barriers in front, on the left side and on the right side after the data are processed by the control system, and the barrier avoidance function is achieved. An infrared counting sensor (1-5) transmits collected information of the number of ball bodies to the control system for processing, and the counting function is achieved.

The invention discloses a novel spectacle temple and a process for preparing the same. Ceramic materials are used as matrixes for the novel spectacle temple, and titanium and zinc alloy is electroplated on the surfaces of the matrixes. The process includes carrying out ball-milling on magnesium oxide, aluminum oxide, carbon fibers, binders and surfactants to obtain uniform slurry, injecting the uniform slurry into molds, aging and setting the uniform slurry to form platy spectacle temple blanks, transferring the platy spectacle template blanks into an atmosphere oven and firing the platy spectacle temple blanks to obtain spectacle temple ceramic substrates; electroplating the spectacle temple ceramic substrates used as templates to form uniform titanium and zinc alloy layers so as to obtain the finished novel spectacle temple. The novel spectacle temple and the process have the advantages that the problems of heavy dead weights and poor anti-dropping capacity of existing ceramic materials can be solved by the aid of the novel spectacle temple, the ranges of materials for the novel spectacle temple can be broadened, the aesthetics of the shape of the novel spectacle temple can be improved, markets for the novel spectacle temple can be opened, the novel spectacle temple can be positioned on high-end markets, and the market competitiveness can be enhanced.

The invention discloses a method for preparing porous dandelion-like Pd nanodendrites, the obtained material and its application as an oxygen reduction cathode catalyst. The method uses N,N'-methylenebisacrylamide (MBAA) as a complex Agents, structure-directing agents and reducing agents, the metal precursors were quickly reduced into porous dandelion-like Pd nanodendrites by one-step static reduction method. The porous dandelion-like Pd nanodendrite prepared by the method of the invention has the advantages of regular shape, ultra-fine particle size, high electrocatalytic activity, etc., and exhibits high catalytic activity and stability as an oxygen reduction cathode catalyst. The preparation method of the invention is simple, efficient and universal.