39results about How to "Enhanced stripping ability" patented technology

The present invention relates to a vanadium pentoxide preparation method, and provides a method for preparing vanadium pentoxide through composite extraction. The method comprises: (1) leaching; (2) reducing; (3) extracting, wherein a vanadium-containing material liquid is extracted with a composite extractant prepared from a phosphate organic matter and a modifier to prepare a vanadium-containing supported organic phase; (4) carrying out back extraction, wherein the supported organic phase is subjected to back extraction with sulfuric acid or a vanadium-containing sulfuric acid solution to prepare a vanadium-rich liquid; (5) removing acid, wherein the excess acid in the vanadium-rich liquid is extracted; (6) precipitating vanadium; and (7) calcining. According to the present invention, the vanadium is extracted with the composite extractant having strong extraction ability and strong back extraction ability, such that the vanadium extraction rate and the vanadium purity can be improved so as to improve the yield and the product of the vanadium pentoxide product, and the alkali consumption can be reduced so as to reduce the production cost.

The invention discloses a waterproof type single-layer lining structure applicable to a fourth level surrounding rock double-line track. The waterproof type single-layer lining structure applicable tothe fourth level surrounding rock double-line track comprises fourth-level surrounding rocks subjected to smooth blasting treatment and further comprises omega-shaped spring drainage half pipes and anchored rods arranged in the fourth-level surrounding rocks in a struck manner. The anchored rods are perpendicular to the rock surfaces of the fourth-level surrounding rocks. The rock surfaces of thefourth-level surrounding rocks are further subjected to washing, injection of a first layer crude fiber concrete and curing, injection of mortar and curing, spraying of a waterproof material and curing, ejection of a second layer fine fiber concrete and curing in sequence. According to the waterproof type single-layer lining structure applicable to the fourth level surrounding rock double-track tunnel involved, force bearing of the single-layer lining structure formed by the technology is uniform; the structure has certain deformation resistant capacity; the construction technology is simple;the construction period is short; construction pollution is reduced; the structure is low-carbon and environment-friendly and widely applied to projects of fourth-level surrounding rock double-tracktunnel lining structures.

The invention discloses a stripping device for electro-deposited metal. The device comprises a rack, knife assemblies on the two sides, a middle inclined stripping knife assembly and a lifting device, wherein the rack comprises a base, a stand column, an L-shaped support, a beam and an upper rack body, the knife assemblies on the two side comprise two sets of knife assemblies distributed on the left side and the right side of a cathode plate, and each knife assembly comprises a pre-stripping knife, a first front driving arm, a first back driving arm, a first guiding device, a synchronization mechanism, an opening and closing oil cylinder and a downward-pressing oil cylinder; the middle inclined knife assembly comprises an inclined stripping knife, a second front driving arm, a second rear driving device, a first guiding device, a synchronization mechanism, an opening and closing oil cylinder and a downward-pressing oil cylinder; the lifting device comprises a lifting oil cylinder, a second guiding device, a cathode plate hook and a cathode conductive head adjusting block. The stripping device is small in size, high in zinc stripping capacity, high in pre-stripping success rate and high in applicability and efficiency and sub-sequent zinc stripping operation is facilitated.

The invention provides an adhesive having high glass-transition temperature. The adhesive has very high glass-transition temperature (Tg) 170 DEG C, and the heat-resistant performance is superior to those of epoxy system adhesive and acrylic ester system adhesive. A flexible copper-coated plate prepared by using the adhesive has the excellent heat-resistant performance, bonding performance, flameresistance performance and weather-proof performance and can be applied to the field of high-end circuit boards, such as automobiles, G-series high-speed trains, spaceflight and war industry.

The invention discloses an industrial water treatment bactericide which is prepared from the following raw materials in parts by weight: 18-25 parts of glycosyl-gemini quaternary ammonium salt, 2-5 parts of alkyl glycoside, 4-10 parts of isothiazolinone and 5-10 parts of sodium dichloroisocyanurate. The four-component compounded industrial water treatment bactericide provided by the invention has high efficiency and broad spectrum, the potential of each component is exerted to the maximum through synergy, and thus the requirements for diversified sterilization treatment of industrial water microbes are met. The bactericide provided by the invention also has the advantages of low toxicity and easy degradation.

The invention discloses a moderate and stable sterilizing wet paper towel for mobile phones and application of the moderate and stable sterilizing wet paper towel. The moderate and stable sterilizing wet paper towel is prepared from O-cymene-5-ol, quaternary ammonium salt-73, hexamidine dihydroxyethyl sulfonate, 1,2-hexanediol, 1,2-pentanediol, hydroxyacetophenone, chlorhexidine acetate, a sapindus mukorossi extract, butanediol, hydrogenated castor oil and water, wherein the mass ratio of the O-cymene-5-ol to the quaternary ammonium salt-73 to the hexamidine dihydroxyethyl sulfonate to the chlorhexidine acetate is 1: 1: 1: 2. Through compounding all the ingredients, sterilizing capability of a system can be better improved, and the irritability is lowered.

The invention discloses an antibacterial styrene-acrylic emulsion, and a preparation method and the application thereof. The emulsion is prepared from the following components in parts by weight: 40 to 60 parts of deionized water, 15 to 20 parts of styrene, 15 to 20 parts of butyl acrylate, 3 to 5 parts of an emulsifier, 1 to 2 parts of a water-soluble initiator, 0.5 to 1 part of an oxidation-reduction system initiator, 2 to 7 parts of an antibacterial monomer, 0.1 to 0.3 part of a pH value regulator and 3 to 5 parts of other auxiliaries. By taking a main measure of adding a monomer having the antibacterial function for participation in polymerization reaction during synthesis of the styrene-acrylic emulsion, the styrene-acrylic emulsion has an antibacterial function, and no antibacterial auxiliary is needed; moreover, the styrene-acrylic emulsion is uniform in dispersion and difficult to seep. The antibacterial styrene-acrylic emulsion has the characteristics that the styrene-acrylic emulsion is high in efficiency and low in toxicity, is hardly affected by the change of the pH value, and is convenient to use, has a relatively strong stripping function for a mucous layer, is stable in chemical property, and has relatively good dispersion and corrosion inhibition effects.

A method for evaporation-free preparation of zinc sulfate from a brass slag material is characterized by comprising the steps: taking a light ash material of the brass slag material, adding water according to the solid-liquid mass ratio of 1:14-16, carrying out pulp conditioning, and carrying out neutral leaching with concentrated sulfuric acid; then extracting by a P204 extraction agent, and washing with a dilute sulfuric acid solution with the pH value of 2.0-2.5; next carrying out first-class cross-flow back extraction by a sulfuric acid solution with the concentration of 350-450 g/L, carrying out repeated back extraction, and then separating out zinc sulfate; carrying out second-class cross-flow back extraction of a zinc-containing P204 oily liquid left in the first-class back extraction with a sulfuric acid solution, and when the zinc concentration reaches about 95+/-10 g/L, supplementing the second-class back extraction solution to the first-class back extraction solution; allowing the P204 oily liquid obtained after second-class back extraction to anew return to the step 2), and carrying out extraction; and finally carrying out cycle operation of feeding, leaching, extracting, washing, first-class cross-flow back extraction and second-class cross-flow back extraction, and separating out zinc sulfate heptahydrate crystals. The method has the advantages of simple process, low energy consumption and high production efficiency; and the prepared zinc sulfate is granular in shape, is bright white in color, and has the quality better than zinc sulfate produced by a concentration distillation method.

The invention provides a method for extracting phenolic substances from phenol-containing raw oil. The method comprises the following steps: 1, extracting: carrying out multistage countercurrent extraction on the phenol-containing raw oil with an aqueous solution of ammonia or an organic amine as an extractant to obtain an extract phase A and a raffinate phase B; 2, back-extracting: carrying out multistage countercurrent back-extraction on the extract phase A with nonylphenol or a high-boiling phenol, having a molecular weight greater than that of trimethylphenol, in coal tar as a back-extractant to obtain an aqueous phase C containing the extractant and a back-extraction phase D rich in phenolic substances; 3, regenerating the extractant: adding the back-extraction phase D rich in phenolic substances into an extractant recovery tower, carrying out rectification separation to obtain a water-containing extractant E at the tower top and a tower bottom liquid which is crude phenol oil F,mixing the water-containing extractant E with the aqueous phase C containing the extractant, and then returning the obtained mixture to step 1 for recycling; and 4, refining and regenerating the back-extractant: carrying out multi-time distillation separation on the coarse phenol oil F to obtain a back-extractant G and the phenolic substances, and returning the back-extractant G to step 2 for recycling.

The invention relates to a photoresist stripping liquid. The photoresist stripping liquid is characterized by comprising an organic amine compound, an organic solvent and an additive, wherein the additive is selected from at least one of 8-hydroxyquinoline, [(2-hydroxyethyl)imino]di-2,1-ethanediyl dioleate, triethanolamine aspartate or alkanolamide; in the photoresist stripping liquid, the contentof the organic amine compound accounts for 15-30wt%, the content of the organic solvent accounts for 70-85wt%, and content of the additive accounts for 0.1-0.5wt%; and in the photoresist stripping liquid, the total content of all constituents accounts for 100%. By the photoresist stripping liquid, rapid stripping of photoresist in ITO/Ag/ITO and Mo/Al/Mo structural layers can be achieved, good low-temperature performance is achieved, and the problems of corrosion to a metal matching line, environmental pollution, poor safety of an operator, toxicity, poor stripping effect and the like are effectively solved.