46results about How to "Prevent decomposition reaction" patented technology

This invention relates to Li ioninc cells including a pole set and non-solution electrolyte sealed in a shell, and the pole includes a positive, a negative pole and ceramic membranes, which is stable under high temperature and safe.

The invention relates to a method for preparing a polyvinyl alcohol nano fibrous membrane containing nano silver and amino acid, which comprises the following steps: dissolving polyvinyl alcohol in a mixed solution of formic acid and deionized water, adding into a two-fluid beaming electrostatic spinning pouring pipe A, adding a complex solution generated from amino acid and silver ion into a two-fluid beaming electrostatic spinning pouring pipe B, gathering the two solutions in a sprayer C under the action of gravity, connecting a high-voltage generator to carry out electrostatic spinning while controlling the voltage at 15-20 KV, and receiving fibers with a metal flat plate; and crosslinking the received fibers in formaldehyde and concentrated acetic acid gas phase, and meanwhile, reducing the silver ion in silver histidine to obtain the nano silver, wherein the obtained nano fiber is hydrophilic, but can be easily dissolved in water. The preparation method provided by the invention is simple and high in yield; and the nano fibrous membrane has the advantages of high stability, high mechanical properties and favorable antimicrobial property, and can be used in the fields of medical treatment, cosmetics, food and the like.

The invention provides a production method of nitro-compound. The production method comprises the steps of: continuously feeding a mixed acid solution from a heavy-phase inlet of a first centrifugal extraction separation device of a nitration separation system disclosed by the invention, and continuously feeding a raw material to be nitrified from a light-phase inlet of a final centrifugal extraction separation device at the same time, wherein the reaction temperature inside each centrifugal extraction separation device is controlled at 10-160 DEG C, and the rotating speed of each centrifugal extraction separation device is controlled at 800-2000 r/min; after multi-stage continuous nitration reaction, discharging final coarse nitride from a light-phase outlet of the first centrifugal extraction separation device, and discharging final waste acid from a heavy-phase outlet of the final centrifugal extraction separation device; and carrying out common alkali washing and water washing on the coarse nitride, and distilling the coarse nitride to obtain the refined nitro-compound product. According to the method disclosed by the invention, the nitration reaction is continuously carried out; the device is compact, easy to achieve automatic control, large in operation elasticity, and high in production efficiency; and as the reaction product and the waste acid are separated from each other at the same time inside the same reactor, the contact time of the reaction product and the waste acid is greatly shortened, side reaction is effectively avoided, energy consumption and material consumption are greatly reduced, and the security of the nitration reaction process is fundamentally ensured.

The invention discloses an Artemia ovum hatching method with high hatchability rate which comprises the steps of, freezing the collected insect ovum, drying directly, charging capsule with chemicals into the packaging tank, packaging together with the insect ovum, the chemicals include solids capable of generating hydrogen peroxide, during the using process, the insect ovum and capsule are poured into the hatching pool for hatching. The method can substantially increase hatching rate, the quality period can be extended for over 6 months.

An asphaltene thermal plasma cracking processing method comprises the following steps: a) asphaltene produced by an inferior heavy oil solvent deasphalting process is sprayed into a thermal plasma reactor through an atomization device; b) in the thermal plasma reactor, the asphaltene undergoes a mixed reaction with a hydrogen thermal plasma jet flow, and a crackate is obtained from the reaction; c) the crackate passes through a gas-solid fast separation device, and a solid phase product and a gas phase product with the temperature of 1600-2000 K are obtained, wherein the solid phase product is a solid carbon material; and d) the gas phase product enters a quenching device, and cracked gas containing acetylene, hydrogen gas and methane is obtained. The method is suitable for processing the asphaltene produced by the inferior heavy oil solvent deasphalting process, can realize high efficiency conversion of the asphaltene, and produces high-added-value products such as the solid carbon material, acetylene, hydrogen gas and the like.

The invention discloses a method for preparing BaTiO3 conductive ceramic powder by taking water as a medium through rare earth phase-phase permeation, which relates to a synthesis method of an inorganic nanometer functional material and is used for overcoming the defects of high cost and non-environmental-friendliness existing in the conventional rare earth permeation method. In the method, waterinstead of an alcohol or amide organic solvent is taken as a permeation medium, so that cost is reduced, environmental pollution is prevented, the purity of a product is increased simultaneously, andthe repeatability of modification is enhanced. The method comprises the following specific steps of: raising the temperature of a furnace to be permeated to a set temperature of 750-900 DEG C; dripping distilled water into the furnace to exhaust air in the furnace; putting BaTiO3 ceramic powder into a permeated furnace; and dripping a permeation liquid containing rare earth elements into the furnace to obtain BaTiO3 conductive ceramic powder. The room temperature resistivity of a produced prepared with the method can be 10<-2> ohm.m, and the particle size of powder is 120-300 nanometers.

The invention discloses an agilawood essential oil extraction method. According to the technical scheme, agilawood is extracted according to a microwave extraction method, and microwave extraction refers to that the extraction efficiency of a solvent is enhanced by using microwaves, and certain organic components in a solid or a semi-solid test sample are effectively separated from substrate substances; the microwave heating time is short, and thermal unstable substances can be prevented from decomposition reactions; due to microwave extraction, rapidness and energy conservation can be achieved, the solvent can be saved, the pollution is low, and multiple test samples can be simultaneously treated; according to the technical scheme, two times of microwave extraction are implemented, so that volatile oil components in the agilawood can be well extracted, waste of raw materials is reduced, and the extraction efficiency can be improved.

The invention belongs to the technical field of lithium ion batteries, and particularly relates to an electrolyte, application thereof and a lithium ion battery. The electrolyte provided by the invention comprises a solvent and a lithium salt, wherein the solvent is perfluoropolyether ester and a halogenated amide compound. According to the invention, the perfluoropolyether ester contains high-content fluorine atom substitution, so that the perfluoropolyether ester is not easy to oxidize and decompose under a high-voltage condition, and an assembled battery can maintain a relatively high capacity retention rate; the halogenated amide compound is used as a cosolvent of the electrolyte, is preferentially decomposed under a high-voltage condition, and reacts on the surface of the positive electrode to form a layer of stable protective film to coat the surface of the high-voltage positive electrode in situ, so that direct contact between the electrode and the electrolyte is avoided, and the cycle stability of the lithium ion battery under high voltage is further improved; the halogenated amide compound has a high dielectric constant, can dissociate a large amount of lithium salt, promotes rapid conduction of ions, and is beneficial to improving the electrochemical performance of the electrolyte.

The invention discloses a preparation method of a radiation-resistant communication pipe. The method comprises the following steps: (1) preparing glass fiber reinforced high-density polyethylene; (2) modifying the glass fiber reinforced high-density polyethylene; (3) carrying out drying; (4) feeding the material to a twin-screw extruder for extruding and granulating; (5) feeding aggregates prepared in the step (4) into an injection molding machine after drying, and carrying out injection molding to prepare a molded communication pipe; and (6) carrying out performance analysis on the communication pipe prepared in the step (5). Through improvement of the material formula of the communication pipe and control on the preparation technology, the tenacity of the communication pipe is improved; and the communication pipe has high specific strength and specific stiffness and relatively good electromagnetic shielding performance.