9results about How to "Solve liquidity problems" patented technology

The invention discloses a leakproof composite phase change material and application of the leakproof composite phase change material in wide temperature range operation of a lithium battery, and belongs to the technical field of battery thermal management. Boron nitride nanosheet modified ceramic fibers are used as an internal supporting framework to enhance thermal conductivity and provide capillary constraint, and a core material is a phase change medium such as paraffin or n-octadecane; the invention further discloses a preparation method of the composite material and application of the composite material in lithium battery thermal management, the composite material solves the problems that a traditional phase change material is prone to leakage, poor in heat conduction and single in function, the battery can be rapidly heated at low temperature, heat can be efficiently absorbed and diffused at high temperature / normal temperature and high rate, and the service life of the battery is prolonged. The safe, efficient and stable operation of the lithium battery in a wide temperature range is realized, the leak-proof performance is high, the cycling stability is good, the preparation cost is controllable, and the application prospect is wide.

The application discloses a salt-resistant water-non-dispersible material for oil well cement and a preparation method thereof. The salt-resistant water-non-dispersible material for oil well cement comprises the following components in the form of weight parts: 100 parts of N,N-dimethyl acrylamide, 3-6 parts of acrylic acid, 10-20 parts of 2-acrylamide-2-methylpropanesulfonic acid, 5-15 parts of a cyclic monomer, 0.1-0.4 parts of a branching agent, 5-15 parts of a cationic monomer, 0.3-3 parts of a crosslinking agent and 400-500 parts of water. The salt-resistant water-non-dispersible material prepared by the application has good salt resistance, can significantly improve the anti-dispersion performance of the cement slurry when used in a salt water and sea water cement slurry system with a NaCl content of 18 wt% or less, and has excellent rheological performance.

This application discloses a vibration damping device for spinning drums in textile machinery, relating to the field of vibration damping technology in spinning machinery. The device includes a rod sleeve, lubricating oil, a threaded rod, a threaded rod buffer tube, a vibration damping spring assembly, and an oil lifting assembly. The vibration damping spring assembly adopts a variable pitch hollow spring body structure with a denser upper section and a sparser lower section. It has multiple oil control sections evenly arranged along the spiral direction of the variable pitch spring body. Each oil control section has an oil inlet hole and a movable membrane fixed outside the oil inlet hole. The movable membrane uses magnetic attraction to open and close the oil inlet hole and adjust the actual opening area of ​​the oil inlet hole during rebound, achieving real-time adaptive control of the oil flow. This enables improved response speed for adaptive oil flow control, enhanced vibration damping consistency due to temperature adaptation, strengthened damping effect for unidirectional flow, effective suppression of simple harmonic motion to improve equipment stability, and optimized cooling efficiency to extend service life.

The invention relates to the technical field of concrete, and particularly discloses a cement-based reinforcing thickener for dry-mixed mortar. The cement-based reinforced thickening agent for the dry-mixed mortar is prepared from the following raw materials in percentage by mass: 60 to 75 percent of Portland cement, 15 to 25 percent of fine aggregate, 5 to 10 percent of composite thickening agent, 3 to 4 percent of composite fiber and 1 to 2 percent of retarder, the composite thickening agent comprises a polycarboxylic acid type water reducing agent and modified cellulose ether, and the mass ratio of the polycarboxylic acid type water reducing agent to the modified cellulose ether is (1-1.5): 2. The cement-based reinforcing thickening agent for the dry-mixed mortar has the advantage of realizing collaborative optimization of multiple functions such as water reduction and reinforcement, thickening and water retention, crack resistance and shrinkage resistance in the dry-mixed mortar.

The invention relates to the technical field of tin wire welding of photovoltaic junction boxes, and discloses a special tin wire for a photovoltaic junction box and a manufacturing process of the special tin wire. The alloy layer comprises tin, lead, aluminum, antimony, arsenic, bismuth, copper, iron, zinc, cadmium and sulfur; the soldering flux layer is composed of rosin, tetrahydrofurfuryl alcohol, propylene glycol monomethyl ether, succinic acid, glutaric acid, dibromo butylene glycol, dimethylamine hydrochloride and a fluorocarbon surfactant; the softening agent is added into the raw materials in the soldering flux layer, the viscosity of the soldering flux layer is increased, the tin wire composed of the soldering flux layer and the alloy layer can be well attached to a welding spot after welding, residues of the tin wire after welding are transparent, the tin wire is not brittle, not prone to powdering and not sticky, the problem that production lines and products are polluted by rosin after welding is solved, meanwhile, the activity of the tin wire is excellent, and the service life of the tin wire is prolonged. According to the tin wire, the different proportions of the softening agent in the soldering flux layer are changed, so that the manufactured tin wire can be suitable for different temperature conditions.

This utility model discloses an improved iron separator device in the field of chemical equipment technology, including a housing; a housing cover that fits over the top opening of the housing; multiple magnetic rods arranged in a staggered pattern along the material flow direction inside the housing, with the upper end of each magnetic rod rotatably mounted on the housing cover and the lower end suspended inside the housing; an adjusting frame spanning the upper end of the housing cover and connected to the upper end of each magnetic rod for synchronously driving the multiple magnetic rods to rotate around its axis, thereby switching the material-facing side and the material-repelling side of the magnetic rods; and multiple guide plates, each fixedly positioned downstream of each magnetic rod, with the guide plates having a V-shaped structure. This device achieves periodic switching between the material-facing and material-repelling sides of the magnetic rods by rotating the magnetic rods with the adjusting frame, ensuring that all surfaces of the magnetic rods participate uniformly in the adsorption process. The use of a multi-row staggered magnetic rod array, with a corresponding V-shaped guide plate behind each magnetic rod, synergistically enhances the adsorption effect.

This invention discloses a recycled polyamide composition for replacing steel with plastic and its preparation method. The composition is prepared from the following components in parts by weight: 21.2-23.1 parts recycled polyamide resin, 75 parts reinforcing agent, 0.2-0.3 parts antioxidant, 0.5-1 part lubricant, 1-2 parts organic black masterbatch, and 0.2-0.5 parts flowability improver. The polyamide composition of this invention uses recycled polyamide resin as the main raw material, which is modified with a flowability improver and an organic black masterbatch, and reinforced with glass fiber. The addition of the flowability improver and organic black masterbatch lowers the crystallization temperature of the polyamide material, improves the material's flowability, and solves the problems of appearance and flowability of highly glass fiber reinforced recycled polyamide materials.

The invention relates to an amorphous NADP solvate and a preparation method thereof. The amorphous NADP solvate disclosed by the invention is an NADP diethanol solvate or an NADP diisopropanol solvate. The preparation method comprises the following steps: adding an NADP aqueous solution with specific concentration and pH into an alcohol solvent with specific temperature, stirring, crystallizing, carrying out suction filtration, and carrying out vacuum drying to obtain the amorphous NADP solvate. The amorphous NADP solvate disclosed by the invention solves the problems of stability and fluidity, and meanwhile, the method is simple to operate, the process is easy to control, and the method is suitable for industrialization.

This invention discloses a low-shrinkage, high-strength fluidized solidified soil for solidified clay. The raw materials include: a curing agent, an activator, waste mud, pre-wetted lightweight aggregate, and water. The curing agent has a mass fraction of 5-20%, the activator has a mass fraction of 0.6%-1.8%, and the mass ratio of waste mud to pre-wetted lightweight aggregate and water is 5-7:3-5:2.5-4.5. The pre-wetted lightweight aggregate is a pre-wetted spherical porous lightweight aggregate, comprising: 10%-30% Bayer red mud, 30%-50% fly ash, 10% metakaolin, 15% quartz powder, 10% guiguang talc, and 1.5%-3% pore-forming agent. This invention utilizes the internal curing effect of the pre-wetted lightweight aggregate to solve the fluidity problem of fluidized solidified soil under low water-to-solid ratio conditions. Combined with a lower water-to-solid ratio to reduce drying shrinkage and the arching effect of the spherical lightweight aggregate to improve strength, it achieves the goal of preparing low-shrinkage, high-strength, crack-resistant fluidized solidified soil.