13 results about "Poly ethylene" patented technology

The invention discloses a temperature-sensitive wall material. The temperature-sensitive wall material comprises a temperature-sensitive material modified polymer wall material, wherein the temperature-sensitive material is polyvinylpyrrolidone, glycerophosphate, stearic acid, galactose-removed xyloglucan or gelatin-chitosan, poly(N-isopropylacrylamide) and hydroxybutyl chitosan. The temperature-sensitive wall material releases drugs at different temperatures, the drug release time is flexibly controlled, the phytotoxicity is reduced, and the drug action time is prolonged. The temperature-sensitive wall material can be applied to whole-course pesticide application protection of the growth cycle of crops, the chemical application frequency is reduced, and the crop management efficiency is improved. The invention also provides a corresponding microcapsule and a preparation method.

The invention discloses a camellia oleifera abel shell compound corrosion inhibitor and a preparation method and application thereof. The camellia oleifera abel shell compound corrosion inhibitor comprises 0.1-1.0 g/L of camellia oleifera abel shell extract, 0.05-0.5 g/L of aromatic aldehyde compound, 0.1-0.5 g/L of anionic surfactant, 0.01-0.1 g/L of polyvinylpyrrolidone and the balance picklingsolution. The preparation method comprises the following steps: mixing and uniformly stirring raw materials with the formula ratio to obtain the target camellia oleifera abel shell compound corrosioninhibitor. The camellia oleifera abel shell compound corrosion inhibitor is applied in acid pickling of iron and steel materials.

The invention belongs to the technical field of lithium battery materials, and particularly relates to a continuous preparation method of an ultrathin ceramic chip solid composite electrolyte of a lithium battery. The method comprises the following steps: adding polyvinylpyrrolidone into absolute ethyl alcohol at room temperature, stirring for 10-15 minutes, sequentially adding a lithium source, alanthanum source and a zirconium source, mechanically stirring for 120 minutes or more, adding a defoaming agent, and defoaming in vacuum for 20-50 minutes to obtain precursor slurry; scraping the slurry on a porous polymer film to form a film, then heating the polymer film to 130-160 DEG C, biaxially stretching the film, placing the stretched film on a conveyor belt, and continuously passing through a drying oven to form a solid ceramic green belt; cutting the solid ceramic green tape into ceramic blank sheets, placing the ceramic blank sheets in a sintering furnace, raising the temperatureto 450-600 DEG C at the rate of 2-3 DEG C/min for heating and heat preservation for 1-2 hours, then raising the temperature to 700-850 DEG C at the rate of 5-10 DEG C/min for sintering and heat preservation for 2-4 hours, and taking out the ceramic blank sheets after furnace cooling.

The invention discloses a low-thermal-shrinkage lithium ion battery diaphragm and a preparation method thereof. The lithium ion battery diaphragm is prepared from the following raw materials in percentage by weight: 70 to 75 percent of white oil, 10 to 15 percent of ultra-high molecular weight polyethylene, 10 to 15 percent of high-density polyethylene, 0.1 to 1 percent of propylene-ethylene block copolymer, 0.1 to 0.2 percent of modifier and 0.1 to 0.2 percent of compatilizer. According to the low-thermal-shrinkage lithium ion battery diaphragm and the preparation method thereof, the stability of a film in a stretching process is guaranteed by limiting and precisely proportioning raw materials, and then transverse shrinkage caused in transverse stretching processes is reduced by limiting the temperature, the stretching ratio and the retraction ratio in the primary transverse process and the secondary transverse process and jointly designing the length ratio of a stretching area to a non-stretching area to a retraction area of a transverse stretching drying oven; and the setting temperature is increased in a heat setting area, so that the heat shrinkage of the diaphragm is reduced, winding wrinkles caused by shrinkage deformation during diaphragm winding are prevented, the battery short-circuit risk caused by excessive heat shrinkage of the diaphragm is avoided, and the overall performance of the lithium ion battery is improved.

The invention discloses a dewatering sludge curing agent, which comprises, by weight, 55-75% of magnesium oxide, 15-35% of magnesium chloride, and 5-15% of polyvinyl acetate. According to the invention, the dewatering sludge curing agent has beneficial effects of simple formula, low use amount and simple operation, wherein the use method comprises: mixing the sludge and the curing agent accordingto a mass ratio of 1:(0.08-0.15), uniformly stirring, and paving and airing; the cured sludge is uniform in property, same in surface strength and internal strength, free of crack on the surface, andfree of internal soft adhesion; and the curing speed is high and the curing effect is good.

Embodiments of the present disclosure include composites and flexible multilayer pipe liners comprising a fibrous layer; and a polyolefin backing layer comprising a blend of: (a) an ultra-high molecular weight ethylene-based polymer having an intrinsic viscosity from 5 to 50 deciliters/gram, (b) a polyethylene resin comprising a first molecular weight ethylene-based polymer component and a secondmolecular weight ethylene-based polymer component, wherein the polyethylene resin has a density from 0.930 to 0.960 g/cc; (c) a thermoplastic polyolefin elastomer having a density of from 0.850 to 0.910 g/cc; and (d) optionally, a fluoropolymer.

The invention provides a novel particle for fishing gear box production and a preparation method thereof, and relates to the technical field of fishing gear box production raw materials. The novel particle for fishing gear box production is prepared from the following raw materials in parts by weight: 40-50 parts of ethylene vinyl acetate copolymer, 10-20 parts of polyethylene, 10-20 parts of polypropylene, 10-20 parts of thermoplastic polyurethane elastomer rubber, 8-12 parts of thermoplastic vulcanized rubber, 8-10 parts of nitrile rubber, 3-5 parts of ethylene bis oleamide, 0.2-0.4 part of flame retardant, 0.5-0.9 part of light stabilizer, 1-2 parts of glass fiber, 1-2 parts of titanium dioxide, 1-2 parts of a lubricant and 1-2 parts of a dispersant. According to the invention, the fishing gear box is produced by the prepared granular material, and the physical properties of the fishing gear box are obviously improved so that the quality of the fishing gear box is greatly improved, the strength of the fishing gear box is still enough after the fishing gear box is used for a long time, and the product is not easy to age.

The invention discloses a self-healing branched polyethylene diamine hydrogel microcapsule composite material as well as a preparation method and application thereof, and belongs to the technical field of new energy materials. The self-healing hydrogel microcapsule is formed by wrapping a carbonaceous microsphere and branched polyethylene diamine hydrogel with a trimethylolpropane ethoxylate triacrylate shell, and then the active composite material of the magnesium ion battery positive electrode is obtained by mixing nano vanadium pentoxide and the self-healing hydrogel microcapsule. After thehydrogel with the self-healing function is released, cracks of the positive plate of the magnesium ion battery can be accurately healed, and the conductive carbon spheres play a bridge role in electrode cracks, so that the stability of an electron transport channel and an electrode is effectively enhanced. Therefore, the conductive carbon spheres and the branched polyethylenediamine hydrogel generate a synergistic effect, electron conduction healing can be achieved, good stability after self-healing is guaranteed, and the super-long service life of the battery under the condition of rapid charging and discharging circulation is achieved.

The invention discloses an alkoxy ether dendritic hyperbranched polymer, and a preparation method and application thereof. The alkoxy ether dendritic hyperbranched polymer disclosed by the invention is a temperature and pH dual-response type dendritic hyperbranched polymer. Hyperbranched polyethyleneimine is modified with alkoxy ether dendronized elements with excellent temperature-sensitive characteristics, and dendronized hyperbranched polymers with different grafting rates are prepared by changing the ratio of polyethyleneimine to alkoxy ether. The polymer prepared by the invention has excellent temperature and pH dual-response behaviors and excellent biocompatibility, can realize envelope control of guest molecules as a novel intelligent molecular container, and has potential application in the fields of drug controlled release, sensors and the like.