4results about How to "Meet engineering application requirements" patented technology

The invention discloses a lithology identification method based on a neural network, and the method comprises the steps: obtaining a logging curve, recognizing a missing value in the logging curve, taking the parameter data in the logging curve as sequence data, inputting the sequence data into an established neural network model, carrying out the prediction through the neural network model, obtaining the complementation data corresponding to the missing value, and obtaining the lithology of the logging curve. Filling missing values in the logging curve by using the completion data to obtain a complete logging data set, namely a first data set; based on the first data set, performing equalization processing on lithology classification samples in the first data set to obtain an equalization logging data set, namely a second data set; a whale optimization algorithm is adopted to optimize hyper-parameters of the classification model, target hyper-parameter configuration is obtained, and the classification model is configured; and inputting the second data set into the classification model, and identifying and outputting the lithology category. The method is high in missing value filling precision, excellent in sample equalization effect, remarkable in model performance optimization and high in system practicability.

The invention relates to the technical field of artificial board processing, in particular to a preparation method of green low-toxicity flame-retardant plywood. The method comprises the following steps: S1, green synthesis and step-by-step dipping treatment of a complexing phosphorus-nitrogen flame retardant; s2, preparation of a flame-retardant adhesive and construction of an interface intumescent flame-retardant system; s3, stepped layered assembly and hot press molding; s4, conducting ion regulation and anti-rust treatment; wherein the complexing phosphorus-nitrogen flame retardant in the step S1 takes phosphorus and nitrogen as core flame-retardant elements and is synthesized through a complexing rapid reaction and cross-linking reaction technology, the reaction temperature is 80-100 DEG C, and the reaction time is 30-60 minutes; the mass ratio of the phosphorus-containing metal complex precursor to the nitrogen source compound to the chitosan to the catalytic substance is (2-3): (5-6): (1-3): (0.5-1). According to the flame-retardant plywood prepared through the method, the combustion rate growth index is smaller than 100 W / s, the 600-s total heat release amount is smaller than 7.0 MJ, the smoke generation rate index of the smoke generation characteristic is smaller than or equal to 30 m / s, the 600-s total smoke generation amount is smaller than or equal to 50 m, and multiple technical defects of traditional flame-retardant plywood are overcome.

This invention discloses a coal gangue grouting and filling material with high rheological resistance and resistant to bleeding, its preparation method, and its application, relating to the field of mine filling material technology. The grouting and filling material, by mass percentage, comprises: 70%~75% coal gangue, 0.55%~2.3% composite rheology modifier, and the balance being water; wherein the composite rheology modifier includes an air-entraining agent and a dispersant, with a mass ratio of (90~99):(1~10); the air-entraining agent is a surface-active foaming material, and the dispersant is a phosphate additive. In its preparation, coal gangue is first mixed with water and stirred to obtain an initial slurry; then the air-entraining agent and dispersant are mixed to prepare the composite rheology modifier; finally, the composite rheology modifier is added to the initial slurry and stirred until homogeneous to obtain the grouting and filling material. This grouting and filling material uses coal gangue as the main raw material, has a simple preparation process, and possesses excellent fluidity, stability, and pumpability.

This invention discloses an ultra-high nickel single-crystal cathode material and its preparation method, belonging to the field of lithium battery technology. The preparation method includes: preparing Ni and Mn continuous gradient precursors in three reactors in series; achieving tungsten / molybdenum and zirconium / titanium dual-element gradient doping through layered spraying; completing crystallization and surface reconstruction through four-stage oxygen-controlled sintering; constructing fast ion channels through directional pore formation; and constructing a three-dimensional conductive network through CVD deposition and nitrogen doping. The resulting cathode material exhibits a gradient structure that alleviates phase transition stress, directional mesopores that improve rate capability, and a three-dimensional network that stabilizes the interface. It maintains >85% capacity retention after 1000 cycles at 4.5V, >95% capacity retention at 5C, and <0.5mL / g of gas generation at high temperatures. The particles show no cracks after cycling, combining high capacity, fast charging, long cycle life, and high safety, making it suitable for high-energy-density power batteries.