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133results about How to "Guaranteed whiteness" patented technology

Simple method for synchronous preparation of water glass and activated carbon with rice husk pyrolyzed ash

The invention relates to a simple method for synchronous preparation of water glass and activated carbon with rice husk pyrolyzed ash, and especially relates to a simple method, which takes rice husks as raw materials that are first pyrolyzed so as to obtain pyrolyzed ash with a high C/SiO2 ratio, and then performs synchronous preparation of activated carbon during increasing the modulus of a water glass product. In the method, the main raw material sodium hydroxide is employed for hydrolysis of the pyrolyzed ash under heating and pressurization conditions so as to obtain a high modulus water glass solution, and simultaneously the surface of carbon is activated so as to obtain activated carbon. The pyrolysis method adopted in the invention ensures no secondary pyrolysis in pyrolysis, and also ensures that the volatile matter of the pyrolyzed ash can be fully pyrolyzed and contains no tar component, thus ensuring the whiteness of a silica product prepared in subsequent operations. Compared with other pyrolysis methods, the C/SiO2 ratio obtained in the invention is high, and is beneficial to improve the yield of activated carbon. Also, the produced water glass product has controllable modulus, and the produced activated carbon has good application performance. With simple process and low energy consumption, the method of the invention is easy to realize easy industrialized production and has broad application prospects.
Owner:JILIN UNIV

High-temperature resistant yellowing nylon material and preparation method thereof

The invention discloses a high-temperature resistant yellowing nylon material and a preparation method of the high-temperature resistant yellowing nylon material. The high-temperature resistant yellowing nylon material comprises the following raw materials calculated in percentage by weight: 91.5 to 99.2% of nylon, 0.1 to 0.5% of an antioxidant A, 0.1 to 0.5% of an antioxidant B, 0.1 to 5% of TiO2, 0.1 to 0.5% of a silane coupling agent, 0.1 to 2% of Na6A14Si6S4020 and 0.1 to 0.5% of a lubricant. Compared with the prior art, the high-temperature resistant yellowing nylon material disclosed bythe invention has the advantages of inhibiting the thermal oxidative aging behavior and yellowing phenomenon of the nylon material through selecting organic copper salt and an anti-yellowing additiveto be in a compound use on the one hand, being capable of slowing down or inhibiting yellowing to some extent by reasonably selecting an aging system, and further having an eliminating effect and a covering effect on yellow color light through a toner system for solving inevitable yellowing under some particularly harsh conditions to ensure that the nylon material still remains whiteness under relatively harsh conditions, thereby ensuring that the nylon material meets strict requirements for whiteness at high temperature.
Owner:ZHEJIANG PRET NEW MATERIALS +4

Dyeing process for modal/cotton blended fabric

The invention relates to a dyeing process for a modal/cotton blended fabric. The dyeing process comprises the steps that the fabric is placed in a vat body, water is input to the vat body to keep the bath ratio at 1:9, and snow white ginned cotton enzyme, glacial acetic acid and deoxidize enzyme are added; the modal/cotton blended fabric is dyed through the dyeing process at the constant temperature of 60 DEG C, wherein 6% of Avitera SE series dyestuff, anhydrous sodium sulphate and sodium carbonate are added for dyeing; after dyeing, the color of the modal/cotton blended fabric is compared with that of a dyeing board, after the color is consistent with the color of the dyeing board, the fabric is washed with clean water; a final treatment is conducted, wherein the alkaline liquor on the fabric surface is removed by adding surface active agent; glacial acetic acid and citric acid are added for adjusting the pH to 4.5; color softening agent and dye-fixing agent are added for color fixing. The dyeing process is mild in dyeing condition, convenient to operate, environmentally friendly, and capable of ensuring the fiber strength, fabric whiteness, capillary effect and the like after dyeing to meet the dyeing requirements. The Avitera SE series dyestuff is a novel high-fixation activated dye, lower in substantivity, good in leveling property and bright in color, and the dyed fabric with the Avitera SE series dyestuff is good in color fastnesses.
Owner:浙江雅雪纺织科技有限公司

Down feather swelling agent and preparation method thereof

The invention discloses a down feather swelling agent, which is prepared from the following ingredients in parts by weight: 5 to 10 parts of softening agents, 5 to 15 parts of surface modifiers, 5 to15 parts of surface active agents, 0.1 to 0.5 part of antioxidants, 5 to 10 parts of pH regulators, 1 to 5 parts of protein filling agents, 5 to 10 parts of ethyl alcohol, 65 to 75 parts of pure waterand 0.1 to 1 part of auxiliary agents. The down feather swelling agent is prepared by the following steps of heating the ethyl alcohol to 40 to 55 DEG C; performing heat insulation; adding auxiliaryagents into the ethyl alcohol; performing stirring dissolution for 5 to 10min; heating the pure water to 40 to 55 DEG C; regulating the pH to 5.5 to 6.5 by the pH regulators; slowly adding the pure water into a mixture of the softening agents, the surface modifiers, the surface active agents, the antioxidants and the protein filling agents; performing high-speed shearing emulsification for 20 to 40 min at 2500 to 2800r/min; slowly adding the solution in the S1 into S2, continuously performing stirring in the period; continuously adding the rest pure water into the solution; performing stirringfor 5 to 15 min; after the solution cools to the normal temperature, performing sealed filling and putting the materials in a cool dry place. The down feather swelling agent has the advantages that the down feather swelling degree can be improved by about 10 to 15 percent, so that the down feather is light, soft and elastic.
Owner:东隆家纺股份有限公司

Method for preparing calcium-zinc stabilizer for shoe materials

InactiveCN110698867AReduce dustGuaranteed whiteness and yellowing resistanceSOYBEAN SEED OILAcetylacetone
The invention discloses a method for preparing a calcium-zinc stabilizer for shoe materials. The method comprises the following steps: S1. separately weighing 1-10 parts of zinc stearate, 10-25 partsof calcium stearate, 0.1-2 parts of zinc acetylacetone, 0.5-3 parts of calcium acetylacetonate, 20-50 parts of brucite, 5-15 parts of epoxidized soybean oil, 2-16 parts of lubricant, 5-20 parts of other metal soap, 5-25 parts of organic auxiliary heat stabilizer, 1-10 parts of unsaturated acid ester, 0.1-2 parts of antioxidant and 1-5 parts of dispersant; and S2. firstly, uniformly mixing variouspowder materials, then, adding a liquid ingredient, i.e., the epoxidized soybean oil, the lubricant and the dispersant, and continuing to carry out stirring until the material is of a wet powder or paste mixture, thereby obtaining the calcium-zinc stabilizer for the shoe materials. The calcium-zinc stabilizer for the shoe materials, prepared by the method, is free of organic lead salts and the like, thereby being environmentally friendly and safe; flying of dust can be effectively lowered; the whiteness and yellowing resistance of the shoe materials can be better guaranteed; the calcium-zinc stabilizer is difficult to separate out; and the color fastness and the like of the shoe materials can be improved.
Owner:浙江杰上杰新材料股份有限公司

Waterproof cloth surface flexible composite material and preparation method thereof

The invention discloses a waterproof cloth surface flexible composite material and a preparation method thereof. The waterproof cloth surface flexible composite material is characterized in that one surface of a super-hydrophobic fabric is bonded with a plastic film by using an adhesive to obtain the washable waterproof cloth surface flexible composite material. The preparation method comprises the following steps of diazotizing a fluorine-containing alkyl aniline monomer in a dilute acid solution of sodium nitrite to form fluorine-containing alkyl benzene diazonium salt; carrying out reduction reaction on the fluorine-containing alkylbenzene diazonium salt under the action of a reducing agent to obtain a fluorine-containing alkylbenzene free radical monomer; and carrying out in-situ single-electron free radical covalent graft polymerization reaction on the fluorine-containing alkylbenzene free radical monomer in the fabric fiber to obtain the super-hydrophobic fabric. As the super-hydrophobic fabric obtained through chemical grafting, the fiber surface coating is combined with the fiber through covalent bonds, so that the super-hydrophobic fabric has excellent fastness, the flexibility and the hand feeling of the fabric are not influenced, and the problems of poor fastness and poor hand feeling of the super-hydrophobic fabric obtained through methods such as the coating are solved.
Owner:SUZHOU UNIV

Comprehensive utilization method of hydrargillite-produced 4A zeolite waste residue

The invention provides a comprehensive utilization method of hydrargillite-produced 4A zeolite waste residue. The method comprises the steps of: separating the ferrosilicoaluminum component in the hydrargillite-produced 4A zeolite waste residue by means of acid leaching and filtering, wherein the obtained mixed liquor of filter liquor and filter residue washing liquor is used for preparing a polymeric aluminum ferric chloride water purifying agent; and removing iron from the wet slag obtained by washing the filter residue by means of alkali fusing, roasting and activating, and synthesizing the 4A zeolite by a hydrothermal method by means of adjusting and assembling. Triethanolamine is taken as a complexing agent of the microelement iron in the liquor during synthesizing the 4A zeolite, so that the produce of an iron precipitate is overcome, and the whiteness of a 4A zeolite product is guaranteed; sodium sulfide is reacted with a triethanolamine iron complex in the zeolite-synthesized mother liquor to reduce the triethanolamine and obtain an iron sulfide precipitate; and removing the mother liquor of the iron sulfide precipitate to realize the cycle utilization. The synthesis method of the 4A zeolite adopts a sealed cycle technology, thereby being stable in operation, and free of the generation of new waste liquor and new waste slag.
Owner:HEBEI UNIV OF TECH

High-whiteness pure color full-body polishing brick, and production method and application thereof

The invention discloses a high-whiteness pure color full-body polishing brick, and a production method and application thereof. The polishing brick is produced by sintering 20 to 30 mass percent of feldspar, 10 to 28 mass percent of high-temperature sand, 20 to 27 mass percent of high-white clay, 0 to 12 mass percent of quartz sand, 10 to 20 mass percent of aluminum powder, 8 to 18 mass percent of calcined talcpowder, 0.5 mass percent of sodium tripolyphosphate and 0.1 to 0.15 percent of methylcellulose at the temperature of 1,180 DEG C for 45 minutes. According to the high-whiteness pure color full-body polishing brick, the whiteness is high (which is 68 to 75 degrees), the radioactivity is close to zero radiation, the water absorption rate is low and is less than 0.1 percent, and the anti-pollution capacity reaches 4 levels; the polishing brick is sintered quickly at low temperature during production, so that the production cost is reduced substantially, and energy conservation and emission reduction are achieved really; and the using amount of calcium oxide and magnesium oxide which serve as raw materials is reduced as far as possible in a formula, and the production defects of poor polishing degree of the sintered brick, narrow sintering range and the like due to a formula in which a large amount of calcium and a large amount of magnesium are required are solved.
Owner:广州锦盈新型材料有限公司
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