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62results about How to "Improve non-polarity" patented technology

Lithium ion battery composite separation membrane and preparation method thereof

The present invention discloses a lithium ion battery composite separation membrane and a preparation method thereof, and belongs to the technical field of lithium ion batteries, wherein at least a surface of a polyolefin separation membrane is coated with a modified natural rubber polymer coating. According to the invention, the polyolefin separation membrane and the modified natural rubber are combined to form the composite separation membrane, such that mechanical properties of the natural rubber can be improved, and the original pore closing characteristic of the polyolefin separation membrane can be maintained and utilized so as to improve safety of the battery, enhance bonding force between the separation membrane and the positive electrode and bonding force between the separation membrane and the negative electrode, eliminate the interface effect, and improve cycle stability of the battery; and the inorganic nanoparticles are added to the modified natural rubber latex, such that the crystallinity of the polymer can be reduced to a certain extent, the mechanical strength of the separation membrane and the carrier concentration can be increased, the interface compatibility between the separation membrane and the lithium electrode can be effectively improved, and the interface is stable.
Owner:HENAN NORMAL UNIV

Composite solid electrolyte, preparation method thereof and application thereof in solid-state secondary battery

The invention discloses a conductive coated composite solid electrolyte, a preparation method thereof and an application of the conductive coated composite solid electrolyte in a solid-state secondarybattery. The composite solid electrolyte is composed of inorganic solid electrolyte particles and a polymer electrolyte coating layer formed on the surfaces of the inorganic solid electrolyte particles. The preparation method of the composite solid electrolyte comprises the following steps of uniformly mixing the polymer/polymer monomer, the cationic compound salt and the inorganic solid electrolyte powder according to a certain ratio to obtain a precursor solution, and adding an initiator to initiate in-situ polymerization of the polymer monomer on the surfaces of solid electrolyte particles, or adding a precipitant to separate out the polymer on the surfaces of the solid electrolyte particles, thereby preparing the composite solid electrolyte. Furthermore, the prepared composite solid electrolyte and a solvent are mixed according to a certain proportion to obtain uniform and stable slurry, and a solid electrolyte film is prepared on the surface of a base material or an electrode byusing a tape-casting coating process and is used for producing a solid-state secondary battery.
Owner:INST OF CHEM CHINESE ACAD OF SCI

Preparation technology of bisphenol fluorene epoxy resin

InactiveCN105754071AReduce total reflected lightImprove energy efficiencyGraftingChloride sodium
The invention relates to the field of epoxy resin and particularly discloses a preparation technology of bisphenol fluorene epoxy resin. The preparation technology of bisphenol fluorene epoxy resin comprises the processes of catalytic grafting reaction, ring-closure reaction, refining reaction, desalting, concentration and brine treatment. The bisphenol fluorene epoxy resin obtained by the preparation technology disclosed by the invention has the properties of low water absorption, low total chlorine content and high heat resistance; the byproduct brine generated in the preparation process and the organic solvent of certain concentration contained in the brine are recycled, and the wastewater is treated to avoid direct discharge to the environment; the obtained sodium chloride can be sold as industrial salt, thereby turning waste into wealth; and the water obtained by condensation can be repeatedly used, thus the water consumption is reduced, and the energy is saved while the emission is reduced.
Owner:EPOXY BASE ELECTRONICS MATERIAL

Lithium battery electrolyte-proof flame-retardant adhesive, preparation method thereof, and adhesive tape

The invention relates to a lithium battery adhesive tape, and more specifically relates to a lithium battery special-purpose electrolyte-proof flame-retardant adhesive, a preparation method thereof, and an electrolyte-proof flame-retardant adhesive tape. The lithium battery electrolyte-proof flame-retardant adhesive comprises, by mass, 10 to 60 parts of octadecyl acrylate, 1 to 10 parts of 4-methacryloxyethyl trimellitic anhydride, 1 to 5 parts of acrylonitrile, 1 to 15 parts of a phosphorus-containing acrylate monomer, 0.001 to 0.5 part of radical initiator tertial butyl peroxymaleic acid, 0.001 to 1 part of ferric trichloride, 0.01 to 2 parts of triphenylphosphine, 50 to 250 parts of an organic solvent, 1 to 10 parts of epoxidized polybutadiene, and 0.1 to 1 part of a curing accelerator.The preparation method is capable of solving a problem in the prior art that the electrolyte resistance of conventional acrylate pressure-sensitive adhesive is poor. According to the preparation method, the electrolyte resistance of the adhesive tape at high temperature environment is improved; and the flame-retardant function monomer and flame-retardant film are introduced, so that the flame resistance of the acrylate pressure-sensitive adhesive tape is improved further.
Owner:佛山市顺德区永创翔亿电子材料有限公司
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