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 relates to a method for preparing double-wall fresh ginger volatile oil microcapsules.The method includes the steps that fresh ginger volatile oil is dispersed in an inner layer wall material and homogenized at normal temperature and high pressure, and a primary suspension is prepared; secondly, the primary suspension is dispersed in an outer layer wall material, emulsifier is added, the primary suspension is homogenized at normal temperature and high pressure, and a secondary suspension is obtained; thirdly, the secondary suspension is dried, and the double-wall fresh ginger volatile oil microcapsules are obtained.The embedding rate of the prepared fresh ginger microcapsules is 81-98%, in the preparation process, the technology that fresh ginger volatile oil is supercritically extracted and normal-temperature double-layer embedding, high-pressure homogenization and freezing or spray drying are conducted is adopted, so that the product embedding rate is high, the embedding effect is good, flowability is good, stability of effective components of the fresh ginger volatile oil can be improved, bioavailability is high, and the method is used in the food and health-care product field.

A bismuth vanadate-based porous nanofiber is characterized in that: the porous nanofiber is composed of bismuth vanadate and amorphous bismuth, and the amorphous bismuth is loaded on bismuth vanadate, and the mass percentage of the bismuth vanadate is It is about 95%-98%, and the mass percentage of the amorphous bismuth is 2%-5%. Its preparation method, it uses bismuth nitrate pentahydrate, N,N-dimethylformamide, vanadyl acetylacetonate, polyvinylpyrrolidone, citric acid, glacial acetic acid, ethanol as raw materials, through high-voltage electrostatic forming technology, muffle furnace Sintering, hydrogen plasma treatment and other steps to achieve. The raw material of the present invention is simple and easy to obtain, the whole experimental process is clear, the operation is convenient, it is easy to realize the large-scale production of the product, and the product can be 100% recovered in the use process, and the obtained amorphous bismuth vanadate porous nanofiber composite material has Excellent flexibility, the macroscopic size can reach tens of centimeters, the microstructure of the product is uniform, and it has a good effect on photocatalytic degradation of dyes. In addition, the material is also expected to have good applications in flexible batteries, flexible photoelectric hydrogen production, etc.

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.