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High-strength ultraviolet / moisture dual-curing PUR hot melt adhesive as well as preparation method and use method thereof
PendingCN121991623AIncrease crosslink densityImprove toughnessPolyureas/polyurethane adhesivesPolymer scienceUltraviolet
The invention discloses a high-strength ultraviolet / moisture dual-curing PUR (Polyurethane) hot melt adhesive as well as a preparation method and a use method thereof. The adhesive is prepared from the following raw materials in parts by weight: 60 to 75 parts of isocyanate-terminated polyurethane prepolymer, 10 to 20 parts of polyurethane acrylate, 10 to 30 parts of reactive diluent, 1 to 5 parts of photoinitiator, 0.1 to 0.5 part of filler, 0.5 to 2 parts of silane coupling agent and 5 to 20 parts of tackifying resin. Wherein the isocyanate-terminated polyurethane prepolymer is obtained through a reaction of dihydric alcohol and isocyanate, the polyurethane acrylate is obtained through a reaction of the isocyanate-terminated polyurethane prepolymer and an acrylate monomer, and the adhesive disclosed by the invention has the dual advantages of rapid positioning in ultraviolet curing and high strength and durability in moisture curing; the adhesive has the advantages of high adhesive strength, good process adaptability, ultrahigh bonding strength, excellent heat resistance and aging resistance, and is especially suitable for assembly line rapid bonding and assembly of precise parts such as electronic components and optical elements.
Owner:NANTONG GAOMENG NEW MATERIAL
Method for constructing regulatory network of potato ja pathway response to cd stress
ActiveCN121565316BOvercome the modal aliasing problemAchieve high-precision separationNeural learning methodsChemical machine learningPlant hormoneNetwork model
The application provides a method for constructing a regulation network of a potato JA pathway in response to Cd stress. The method relates to the technical field of data processing, and comprises the following steps: obtaining multi-omics time series data of potatoes under the conditions of cadmium stress and methyl jasmonate treatment; performing signal decomposition and feature purification on the multi-omics time series data by using a weak stationary signal decomposition method based on sequence patterns to obtain a plurality of intrinsic mode components; constructing a dynamic regulation network model to capture multi-scale change patterns of response characteristics in the time dimension and the concentration dimension, thereby extracting deep features; inputting the intrinsic mode components into the trained dynamic regulation network model to output an attention weight matrix, thereby forming a regulation network representing the dynamic regulation intensity of the jasmonic acid pathway; and solving the optimal exogenous methyl jasmonate concentration for promoting biomass and inhibiting cadmium accumulation by optimizing an objective function. The application provides a high-precision model tool for analyzing the regulation mechanism of plant hormone signals under heavy metal stress.
Owner:GUIZHOU UNIVERSITY OF FINANCE AND ECONOMICS
A motorcycle engine crankcase
The utility model discloses a motorcycle engine crankcase belongs to motorcycle engine technical field, and one kind of motorcycle engine crankcase, including crankcase main part, the crankcase main part upper end surface center one side place is equipped with crankshaft accommodating cavity, the crankcase main part upper end surface center leans to the side and is equipped with the variable speed gear installation cavity, the inboard wall of crankshaft accommodating cavity is equipped with the protection structure, the crankcase main part lower end surface center place is equipped with the reinforcing structure, in addition, the utility model discloses, through the combination design of protective layer, T type sliding block and sliding slot, through the radial limit and prevent the deviation and fall of protective layer because of crankshaft high -frequency vibration, also keep the axial trace sliding space to adapt the thermal expansion and contraction when the engine works, solved the problem that rigid protection structure is easy to produce stress cracking because of temperature change, simultaneously, the direct contact of protective layer and crankshaft part realizes wear and tear isolation, and cooperates slidable type assembly structure, and the durability and adaptability of protection have been greatly improved.
Owner:GUANGDONG RUIZHEN TECH CO LTD
Method for manufacturing high-purity rare earth weathering bridge steel
The application discloses a kind of high-purity rare earth weathering bridge steel manufacturing method, comprising the following steps: S1, preparing raw materials;S2, impurity analysis and preparation;S3, vacuum induction furnace initial refining N;S4, vacuum induction furnace first material and refining;S5, vacuum induction furnace second material and charging adjustment;S6, vacuum induction furnace temperature adjustment and Ce;S7, cooling to form alloy ingot.The application uses vacuum electromagnetic induction melting process, improves alloy purity through high-purity raw materials and reasonable preparation process and process parameter control, and adds rare earth elements, and then significantly improves the strength, tensile and weathering performance of bridge steel.
Owner:ZHEJIANG METALLURGICAL RES INST
Magnesium-lithium alloy cabin structure member and forming method thereof
This invention discloses a magnesium-lithium alloy cabin structure component and its forming method, belonging to the field of magnesium-lithium alloy forming technology. The method includes the following steps: S1. Pre-treatment of the magnesium-lithium alloy ingot, followed by free forging or extrusion to obtain a billet; S2. Die forging the billet and air-cooling it to room temperature to obtain a forging; S3. Holding the forging at 270~290℃ for 4~6 hours, then quenching it in cold water and performing T5 heat treatment; finally, aging strengthening by holding it at 180~220℃ for 8~12 hours. The forming method of this invention improves product uniformity through pre-treatment and enhances product strength and toughness through heat treatment. This forming method has broad application prospects and is expected to be industrialized.
Owner:CHANGSHA ADVANCED MATERIALS IND RES INST CO LTD
A high-wear-resistance extrusion-resistant hydraulic oil pipe strength testing device
ActiveCN120253496Bachieve strengthRealize the effect of extrusion testing
The application belongs to the technical field of hydraulic oil pipe strength testing, and relates to a high-wear-resistance and extrusion-resistant hydraulic oil pipe strength testing device, which comprises a base frame, a connecting frame, door plates, a connecting mechanism, a liquid injection mechanism and an extrusion testing mechanism. The connecting frame is connected to the top of the base frame. The door plates are rotatably connected to the two sides of the connecting frame. The connecting mechanism and the extrusion testing mechanism are arranged on the connecting frame. The liquid injection mechanism is arranged on the base frame. The liquid injection mechanism can inject liquid into the hydraulic oil pipe. The extrusion testing mechanism is used for extruding the hydraulic oil pipe. When the strength of the hydraulic oil pipe is tested, the device can inject water with a certain pressure into the hydraulic oil pipe, so as to test the pressure inside the oil pipe. When the testing is performed, the extrusion column can apply pressure from the outside to the inside of the oil pipe, so as to simulate the impact generated outside in the testing process. The device can simultaneously realize the effects of strength testing and extrusion testing of the hydraulic oil pipe, and the testing effect is better.
Owner:TAICANG LIANHUI HYDRAULIC PRESSURE EQUIP CO LTD
Single-exposure compressive ultrafast coherent modulation imaging device
ActiveCN117761896Bachieve imagingimplement diagnostics
The application discloses a single-exposure compressed ultrafast coherent modulation imaging device. By combining coherent modulation imaging and compressed ultrafast imaging technology, a sample to be measured is illuminated by coherent light, after the sample diffracts the light wave, the phase modulation of a random phase modulation plate is carried out, the integral intensity distribution of the modulated wave front is recorded by deflection on a detection plane by using a slit fully opened stripe camera, a single compressed diffraction pattern is obtained, a spatial two-dimensional to space-time three-dimensional image reconstruction algorithm based on a plug-and-play framework and a depth image priori is developed, and data recovery is carried out on the collected image by using the algorithm. Compared with traditional ultrafast optical imaging and phase imaging technology, the application can quantitatively obtain complete intensity and phase information of a transient scene in a single measurement process, has the characteristics of picosecond time resolution and real-time quantitative intensity-phase imaging capacity in single-exposure phase imaging, and can be widely applied to various ultrafast phenomena requiring phase observation.
Owner:EAST CHINA NORMAL UNIV
一种蜂窝芯复合碳纤维板
Owner:SHENZHEN XINXINGCHENG CARBON FIBER TECH CO LTD
Environment-friendly systematic furniture capable of improving space utilization rate and construction performance and construction method of environment-friendly systematic furniture
PendingCN122004595AImprove space utilizationImprove constructabilityServing tablesFeetWorking environmentWorkspace
The space utilization rate, the constructability and the environmental protection property of existing furniture can be improved at the same time. In particular, a cooling system based on Peltier elements may be mounted within the top plate to maintain comfort of the user's workspace and to cool the desktop surface without separate cooling equipment. By installing the Peltier element and the coolant chamber in the top plate, the temperature of the surface of the top plate can be reduced. In this way, the table top can be kept dry, extra cooling is not needed, and a user can work in a more comfortable working environment. By integrating the cooling device into the top plate member and the head member, the efficiency of the power supply device can be improved, and the cooling function can be integrally provided without installing additional equipment. This improves the ease of installation and maintenance. By using the skin-core-skin carbon fiber composite material, the weight and the strength of the office table can be realized at the same time, and the office table has excellent heat conductivity and excellent cooling and heat diffusion effects.
Owner:西斯株式会社
Environment-friendly paperboard service cycle detection device
ActiveCN224216446UQuick cutting and dividingImplement bursting strength testPreparing sample for investigationMaterial strength using tensile/compressive forcesPaperboardStructural engineering
The utility model relates to the technical field of paperboard detection, and discloses an environment-friendly paperboard use cycle detection device which comprises a workbench, a support is arranged on the workbench, a pressurizing assembly is arranged on the support and comprises an upper die plate capable of moving up and down along the Z axis, an adjustable lower die is arranged on the lower side of the upper die plate on the workbench, and the adjustable lower die is arranged on the lower side of the upper die plate. The adjustable lower die comprises two lower die plates capable of moving oppositely or oppositely, and the two lower die plates are attached to form a male die with the center protruding. Through cooperative use of the pressurizing assembly, the adjustable lower die, the sample cutting assembly and the control panel, the two lower die plates are utilized to form the separable lower die, a convex die with the center protruding is formed by separating clamping and die assembly which can be used for carrying out edge pressure testing on a paperboard, bursting strength testing and edge pressure strength testing can be achieved, and the production efficiency is improved. The paperboard sample can be rapidly cut and separated through the movable cutting knife, other tools are used, and the effects of being convenient to use and diverse in function are achieved.
Owner:ZHEJIANG JINYIJIA PACKAGING CO LTD
Method for preparing fine-grain TC32 titanium alloy rod material with high impact toughness
The application provides a preparation method of TC32 titanium alloy fine-grain rod material with high impact toughness, and relates to the technical field of metal material hot working, and comprises the following steps: step one, selecting a TC32 titanium alloy ingot; step two, high-temperature beta zone cogging forging; step three, alpha+beta two-phase zone intermediate forging; step four, multi-pass radial forging; and step five, double annealing heat treatment. The application provides the preparation method of the TC32 titanium alloy fine-grain rod material with high impact toughness, and through the whole-process collaborative control of "high-temperature beta zone cogging, two-phase zone forging, multi-pass radial forging, furnace heat supplement, and controlled slow cooling double annealing", primary alpha phase fine-grain (2-5 microns) and secondary alpha phase homogenization are realized; while the tensile strength is ensured to be not lower than 950 MPa, the impact toughness is stably improved to be higher than 90 J / cm2, and the highest impact toughness is 110 J / cm2, which is greatly improved compared to the prior art with the impact toughness of 80 J / cm2; the method takes into account high strength and excellent impact resistance, and has uniform structure and controllable process.
Owner:BAOJI YONGSHENGTAI TITANIUM IND
Vibration device for enhancing the strength and plasticity of laser additive manufacturing alloys using multilayer piezoelectric ceramics
PendingCN122077014Ahigh strengthImprove plasticityAdditive manufacturing apparatusIncreasing energy efficiencyAlloyActuator
This invention discloses a multilayer piezoelectric ceramic vibration device for improving the strength and plasticity of alloys manufactured by laser additive manufacturing. Belonging to the field of electrical ceramic materials technology, it includes a vibration platform, a function amplifier, a power amplifier, and a multilayer piezoelectric ceramic actuator adapted to the vibration platform. The vibration platform supports a metal substrate and transmits the vibration of the multilayer piezoelectric ceramic actuator to the molten pool during the laser additive manufacturing process. Through the high-frequency stable vibration output by the multilayer piezoelectric ceramic actuator, a strong acoustic flow effect and mechanical disturbance effect are formed in the molten pool region. On the one hand, this accelerates the escape of gas from the molten pool, completely eliminating porosity defects such as pores and shrinkage, solving the problems of incomplete fusion and uneven interface bonding in traditional laser additive manufacturing. On the other hand, it breaks up the coarse dendrites growing in the molten pool, increases the nucleation core, and achieves significant refinement of grains and the second phase structure, ultimately achieving a synergistic improvement in alloy strength and plasticity.
Owner:GUIZHOU WANHE PRECISION ELECTRONICS CO LTD
A slope protection structure for waterway slopes
Owner:YANGTZE RIVER YICHANG WATERWAY ENG BUREAU
High-stress soft rock stratum anchor rod supporting device
The utility model relates to the technical field of anchor rod supporting equipment, in particular to a high-stress soft rock stratum anchor rod supporting device. According to the technical scheme, the fixing device comprises an outer fixing part and an inner fixing part, wherein the inner fixing part is sleeved with the outer fixing part; the outer fixing part comprises an outer sleeve rod, the bottom of the outer sleeve rod is rotationally connected with a plurality of auxiliary supporting rods, and the top of the outer sleeve rod is further fixedly connected with a rotating disc; the inner fixing part comprises an inner rod rotationally connected with the inner wall of the outer sleeve rod in a threaded mode, the outer ring of the bottom end of the inner rod is fixedly connected with a fixing clamping ring in a sleeving mode, a plurality of fixing blocks are connected to the lower portion of the fixing clamping ring in an array mode along the outer ring of the fixing clamping ring, and a fixing rod is arranged between every two adjacent fixing blocks; the outer ring of the top end of the outer sleeve rod is sleeved and connected with an anchoring connecting disc. Anchoring force is improved, initial anchoring force is provided through reverse wedge block mechanical meshing, the stability of the anchor rod is enhanced in all directions, the anchor rod adapts to high-stress soft rock stratums, engineering safety is guaranteed, and maintenance cost is reduced.
Owner:GUIZHOU ZHENGLI MINING CO LTD
Organic waste gas treatment device and system based on multi-stage coordination
The application discloses a kind of organic waste gas treatment device and system based on multistage coordination, it is related to waste gas treatment technical field, including condensation compensation module, for collecting the real-time temperature and heat tracing power output value of the inner wall of heat tracing pipeline each position point, in combination with preset boiling point threshold value, condensation distribution data are extracted;The concentration value of high-boiling component in waste gas is collected, in combination with condensation distribution data and waste gas residence time value;The application is based on temperature difference and power difference calculation condensation risk coefficient and is aggregated as risk area, realizes the space position positioning of condensate accumulation area and condensation intensity quantification, solves the problem that condensation risk identification in prior art relies on single temperature threshold value, cannot locate condensate accumulation area spatial distribution, provides spatial reference for subsequent microbial metabolism risk accurate identification of carbon source supply.
Owner:ZHEJIANG YAOLAN ENVIRONMENTAL PROTECTION EQUIP CO LTD
A method, medium, and system for establishing a grid-based hazardous chemicals knowledge base
ActiveCN120633795BImplement automated hierarchical analysisachieve strengthCheminformatics data warehousingCheminformatics programming languagesChemical riskQuality data
This invention provides a method, medium, and system for establishing a gridded hazardous chemicals knowledge base, belonging to the technical field of knowledge base establishment methods. First, data is collected and high-quality data is filtered through a recognition index. Then, an accuracy evaluation model is constructed to automatically label various types of knowledge and form a knowledge association matrix to quantify the association strength. Next, a gridded knowledge mapping structure is established, knowledge grid units are divided, and grid centrality is calculated to determine the weight of knowledge points. Subsequently, a minimum spanning tree is automatically constructed to handle knowledge conflicts, and a matrix completion algorithm is applied to handle defective knowledge. Then, a chemical risk association network is constructed, and a hazardous chemicals grid index is calculated to quantify the hazard level. Next, a knowledge reasoning mechanism is designed, and a grid knowledge compression function is used to handle excessively long knowledge. Finally, an adaptive optimization algorithm is implemented to dynamically adjust the grid structure, forming a gridded hazardous chemicals knowledge base that reduces manual dependence and enhances the expression of associations.
Owner:INSPECTION & QUARANTINE TECH CENT SHANDONG ENTRY EXIT INSPECTION & QUARANTINE BUREAU
Functional gradient polishing pad and preparation method and application thereof
PendingCN121756228Aachieve strengthRealize material propertiesGrinding devicesLapping toolsPolishingUltimate tensile strength
The invention provides a functional gradient polishing pad. The functional gradient polishing pad is characterized by comprising a polishing layer and a supporting layer which are integrally formed and have no gap; the polishing layer has a discrete gradient decreasing modulus from the support surface to the contact surface, or the polishing layer has a discrete or continuous gradient decreasing modulus from the center to the edge; the modulus range of the supporting face or the center is 250-680 Mpa, and the modulus range of the contact face or the edge is 50-450 Mpa. The invention further relates to a preparation method of the functionally gradient polishing pad, and functionally gradient distribution is achieved through the additive manufacturing thinking similar to 3D printing and the combination of the pouring position of the polishing layer and materials with different strength proportions. The functional gradient polishing pad provided by the invention can solve the problems of surface defects such as scratches, residues and the like or saucer-shaped recesses, dielectric layer erosion and the like caused by consistent removal rates in the whole polishing space.
Owner:HUBEI DINGHUI MICROELECTRONICS MATERIALS CO LTD +2
Composite retaining wall and construction method thereof
ActiveCN115110572BImprove work performanceImprove impermeabilityArtificial islandsClimate change adaptationArchitectural engineeringCantilever
The application provides a composite retaining wall and a construction method thereof, and the composite retaining wall comprises a cantilever module, a gravity module and a drainage system, the cantilever module is a fabricated retaining wall, is assembled by using dense rib prefabricated plates, is embedded at the bottom of a cast-in-place foundation, and the cast-in-place foundation is poured at one time; the gravity module is formed by pouring solidified soil in layers, is a semi-rigid body, and is filled between the cantilever module and a slope surface; the drainage system comprises a drainage mat and a rigid waterproof board, the drainage mat is laid between the slope surface and the gravity module, the rigid waterproof board is vertically arranged between a slope foot and the cast-in-place foundation, the lower part is located below the bottom elevation of the cast-in-place foundation, and the upper part is located in a solidified soil pouring area. The cantilever module and the gravity module of the retaining wall are mutually engaged to form a space-embedded resistance system, have good supporting performance, and have the advantages of a cantilever retaining wall, a downward-inclined retaining wall and an upward-inclined retaining wall; and the drainage system has good water interception and drainage functions.
Owner:SDIC XINKAI WATER ENVIRONMENT INVESTMENT CO LTD