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36results about How to "Hinder generation" patented technology

Electromagnetic pulse welding method for aluminium plate and steel plate

The invention belongs to the technical field of application welding, and particularly discloses an electromagnetic pulse welding method for an aluminium plate and a steel plate. The electromagnetic pulse welding method comprises the steps of coating Zirconia on the to-be-welded surface of the aluminium plate, and then enabling the to-be-welded surface of the aluminium plate to face the to-be-welded surface of the steel plate directly; and finally, welding the aluminium plate with the steel plate through electromagnetic pulses. According to the method, the generation of Fe-Al intermetallic compounds can be avoided effectively, and steel block inclusions in a welded joint are reduced, so that the electromagnetic pulse welding strength of aluminium / steel is improved.
Owner:CHONGQING UNIV OF TECH

Preparation method and product of deep sea fish skin collagen polypeptide peeling mask

The invention discloses a collagen polypeptide peeling mask which is mainly prepared from the following raw materials in parts by weight: 2-5 parts of hydroxyethyl cellulose, 3-7 parts of arbutin, 1-1.5 parts of sodium alga acid, 4-5 parts of polyethylene glycol, 3.5-4.0 parts of fish skin collagen polypeptide, 6.3-7.0 parts of trehalose, 0.15-0.3 part of grape seed extract, 2-4 parts of licorice root extract, 0.1-0.2 part of phycocyanin, 0.05-0.15 part of antioxidant, 0.5-1.5 parts of preservative, 0.3-0.6 part of compound antibacterial agent, 3-7 parts of glycerinum, 1-3 parts of water-soluble azone and 100-120 parts of natural hydrosol or flower water. The preparation method comprises the following steps: obtaining an intermediate product solution A; obtaining an intermediate product solution B on the basis of the intermediate product solution A; obtaining an intermediate product solution C on the basis of the intermediate product solution B; and finally, adding the residual raw materials into the intermediate product solution C, pouring the obtained materials into a mold for molding, drying at the temperature of 50 DEG C, thereby obtaining the collagen polypeptide peeling mask. The invention also discloses a preparation method of the collagen polypeptide peeling mask.
Owner:吴雪琴

Electrotinning additive and preparation method thereof

The invention discloses an electrotinning additive. The electrotinning additive consists of the following raw materials in parts by weight of 0.2-5kg of naphthol ethoxy propoxy addition compounds, 0.2-2.8kg of ethyl alcohol ethylene oxide addition compounds, 0.1-3.2kg of naphthol ethoxy sulfonic acid, 1-6.5kg of polyethylene glycol 1000-10000, 0.02-0.5kg of resorcinol and 0.02-0.5kg of hydroxyl propanesulfonic acid polymers. The preparation method of the electrotinning additive comprises the specific steps of 1.1, adding about 350L of pure water, and switching on equipment for stirring; 1.2, adding a specified amount of the polyethylene glycol 1000-10000, and performing stirring until the polyethylene glycol 1000-10000 completely dissolves; 1.3 adding a specified quantity of the naphthol ethoxy propoxy addition compounds, and performing uniform stirring; 1.4 adding a specified quantity of the ethyl alcohol ethylene oxide addition compounds, and performing uniform stirring; 1.5 adding aspecified amount of the naphthol ethoxy sulfonic acid, and performing uniform stirring; 1.6 adding a specified amount of the resorcinol, and performing uniform stirring; and 1.7 adding a specified quantity of the hydroxyl propanesulfonic acid polymers, and performing uniform stirring. The electrotinning additive disclosed by the invention is good in oxidation resistance effects, the generation oftetravalent tin can be impeded, the life of tank liquor is prolonged, and the electrotinning additive is suitable for VCP production.
Owner:南通赛可特电子有限公司

Preparation method of multifunctional super-hydrophobic coating with mechanical stability

The invention discloses a preparation method of a multifunctional super-hydrophobic coating with mechanical stability, and belongs to the field of multifunctional application coatings. The method comprises the following steps: respectively dissolving zinc nitrate and potassium hydroxide in deionized water, slowly dropwise adding the zinc nitrate solution into the potassium hydroxide solution under magnetic stirring, transferring the obtained solution into a high-pressure kettle, reacting for 5 hours under mild conditions, centrifuging and drying to obtain zinc oxide with special morphology, and performing hydrophobic modification on the zinc oxide particles obtained by the method by using tridecafluorooctyltriethoxysilane, adding n-hexane, polydimethylsiloxane and absolute ethyl alcohol into a beaker according to a certain proportion, fully stirring, adding modified zinc oxide into the mixed solution, carrying out ultrasonic treatment for half an hour, and finally spraying by using a spray gun to obtain the super-hydrophobic coating. The contact angle of the prepared super-hydrophobic coating reaches 157 degrees, the rolling angle is 4 degrees, and the super-hydrophobic coating has good mechanical stability, photocatalysis and antibacterial ability.
Owner:HEILONGJIANG UNIV

Soldering flux for welding magnesium-containing aluminum alloy

The invention relates to soldering flux for welding a magnesium-containing aluminum alloy. The soldering flux is prepared from, by mass, 97.5%-99.5% of ALF3-CsF series soldering flux, 0.2%-2.0% of zinc fluoride, 0.1%-0.5% of stannic fluoride and 0.01%-0.03% of iridium fluoride, wherein the mole ratio of ALF3:CsF is 42.5:47.5 or 41.5:48.5.
Owner:薛亚红

A kind of preparation method of lithium metal battery negative electrode side interlayer material that prevents lithium dendrite

The invention discloses a preparation method of a lithium dendrite-proof lithium metal battery cathode side interlayer material. Using polyacrylonitrile and carbon nanotubes as raw materials, a CNT@C composite membrane material that prevents lithium dendrites (CNT@C interlayer material, used as a negative electrode for lithium metal batteries) was obtained by preparing membrane liquid, solvent phase inversion, pre-oxidation, and carbonization Side interlayer material), the CNT@C interlayer material with a sponge pore structure and high conductivity is covered on the lithium sheet to protect the negative electrode of the lithium metal battery and prevent lithium dendrites and battery short circuits. at 8mA h cm ‑2 and 8mA cm ‑2 Under the high plating / stripping capacity and current density, the overpotential of Li / CNT@C electrode is about 0.15V after 500h operation. When LiFePO 4 When the full battery is assembled as the positive electrode, the capacity retention rate of the Li / CNT@C battery after 600 cycles is 82.5%, indicating that the CNT@C interlayer material has a better effect on slowing down the growth of lithium dendrites and prolonging the cycle life of the battery.
Owner:DALIAN UNIV OF TECH

Carbon dioxide mask composition and preparation method thereof

The invention relates to a facial mask combination which is formed by simultaneously using a cream type facial mask and a dry powder type facial mask and can generate carbon dioxide and a preparation method of the facial mask combination. The cream type facial mask mainly contains vitamin C and essence, and the dry powder type facial mask mainly contains sodium bicarbonate. The cream type facial mask is smeared on the face, so that facial skin cells absorb active ingredients in the cream type facial mask, then the dry powder type facial mask covers the cream type facial mask, and at the moment, vitamin C reacts with sodium bicarbonate to generate carbon dioxide. After carbon dioxide permeates into capillaries through facial skin, a Boer effect is generated, and the brain of a human body can sense an oxygen deficit signal that the carbon dioxide concentration of the facial skin is too high, so that the brain can send out an instruction to increase oxygen supply of the facial skin, promote metabolism of skin tissue cells and increase collagen synthesis; meanwhile, the essence also has the effects of nourishing, moisturizing and the like, and can slow down aging and improve the skin after being frequently used, so that the appearance of the skin is improved, and the effects of retaining youthful looks and beautifying are achieved.
Owner:蒋佳君 +1

Sulfur-containing amino alcohol Schiff base copper complex, and preparation method and application thereof

The invention discloses a sulfur-containing amino alcohol Schiff base copper complex, and a preparation method and an application thereof. The structural formula of the copper complex is [Cu4(C12H14N2O4S)4], wherein (C12H14N2O4S)<2-> is a sulfur-containing amino alcohol Schiff base anion ligand, namely, L-2-[(5-nitro-2-hydroxyloxy-benzylidene)-amino]-4-methylthio-1-n-butyl alcohol anion. The preparation method comprises the following steps: dissolving L-methioninol in anhydrous methanol, putting the obtained solution into a reaction kettle, adding 5-nitrosalicylaldehyde, adding a potassium hydroxide-anhydrous methanol mixed solution, performing magnetic stirring the solution for 1-2 h at room temperature, adding a methanol solution of a soluble copper salt, performing magnetic stirring for0.5-1.5 h, stopping stirring, taking out a stirring bar, screwing a reaction kettle cover, placing the obtained reaction kettle in a blast constant-temperature drying box, and performing drying at the constant temperature to obtain needlelike and columnar green single crystals that are sulfur-containing amino alcohol Schiff base copper complex [Cu4(C12H14N2O4S)4] single crystals. The copper complex is not only a candidate of antitumor drugs, but also a tumor angiogenesis inhibitor.
Owner:GUILIN MEDICAL UNIVERSITY
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