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408results about How to "Shorten dyeing time" patented technology

Process for dyeing fabrics by combining with plasma and ultrasonic and special device thereof

The invention relates to the field of fabrics dyeing and finishing processes, in particular to a process for dyeing fabrics by combining with plasma and ultrasonic and a special device thereof. The special device comprises low-temperature normal-pressure plasma equipment, grafting reaction equipment, ultrasonic dyeing equipment, a rinsing bath and two groups of control systems, wherein the low-temperature normal-pressure plasma equipment, the grafting reaction equipment, the rinsing bath and the ultrasonic dyeing equipment are sequentially connected, one group of control systems is connected with the low-temperature normal-pressure plasma equipment, and the other group of control systems is connected with the ultrasonic dyeing equipment. The invention organically combines the low-temperature normal-pressure plasma equipment and the ultrasonic dyeing equipment, solves the problem that the dye uptake and the dyeing quality can not improved in a process of dyeing fabrics in a high crystalline region or solves the problem of high energy consumption and high pollution in the dyeing process, and can effectively realize that the dye uptake and the dyeing quality can be improved while realizing environmental-friendly production with low energy consumption and low pollution.
Owner:CHINA TEXTILE ACAD JIANGNAN BRANCH

Polyester-cotton microcapsule disperse reactive dye one-bath dyeing technology

The invention discloses a polyester-cotton microcapsule disperse reactive dye one-bath dyeing technology. The technology comprises the steps of: S1, polyester dyeing: dipping a to-be-dyed polyester-cotton fabric in a dye solution containing microcapsule disperse dye, conducting heat preservation at 65-75DEG C, then performing heat preservation at 110-130DEG C, and carrying out cooling to 30-40DEG C, using chitosan to serve as the carrier of the disperse dye, and then conducting crosslinking curing; S2. cotton dyeing: adding a quaternary ammonium salt cationic etherifying agent, carrying out stirring reaction, then adding a reactive dye, performing heat preservation at 55-65DEG C, adding an organic solvent, conducting heat preservation at 70-90DEG C, then adding organic amine and sodium carbonate, and performing heat preservation at 60-100DEG C; and S3, aftertreatment: performing cooling to room temperature, and then carrying out primary washing, soaping and after-washing. The polyester-cotton microcapsule disperse reactive dye one-bath dyeing technology provided by the invention has the advantages of simple process, little pollution, wide dye applicability, uniform coloring, high color fixation rate and good level-dyeing properties.
Owner:ANHUI YAYUAN PRINTING & DYEING CO LTD

Method for dip-dyeing polyester rayon (cotton) fabrics or yarns with disperse and reactive dyes by one-bath process

The invention discloses a method for dip-dyeing polyester rayon (cotton) fabrics or yarns with disperse and reactive dyes by a one-bath process. The invention is characterized in that the reactive dyes at the low temperature of 60-65 DEG C or dual temperature of 60-65 DEG C and 85-90 DEG C are adopted, and alkali with a pH value of 11-11.5 is added to dye the cotton or rayon fibers; and then acid is added until the pH value is 5-6, the temperature is raised to about 130 DEG C, and the disperse dyes are used to dye the polyester fibers. By using the one-bath two-step dyeing technology instead of the traditional two-bath process, the dyeing time is greatly shortened, the yield is increased, and the consumption of energy and water quantity and the alkali usage are reduced, thus lowering the production cost, reducing the sewage and the content of alkali in the sewage and being beneficial to environmental protection; when the disperse dyes are used for dyeing, the dye liquid is a buffer system formed by sodium acetate generated by firstly adding alkali, then adding acetic acid and neutralizing the alkali and the acetic acid and acetic acid, thus improving the dye reproducibility (one-time dyeing success rate) and reducing the rehandling possibility; and the method has very obvious practical value.
Owner:ZHEJIANG SCI-TECH UNIV

Semi-material dyeing technology of silk-cotton interweaving garment material

ActiveCN103711008ASolve the problem of poor coverageAvoid bareDyeing processColour fastnessPolymer science
The invention provides a semi-material dyeing technology of a silk-cotton interweaving garment material, and belongs to the technical field of silk-cotton goods dyeing. The semi-material dyeing technology comprises the following steps: firstly respectively preparing a first coloring agent and a second coloring agent; then pre-processing a silk-cotton interweaving garment material by adopting one bath process in a dyeing process, keeping temperature at 55-65 DEG C, and dyeing the silk-cotton interweaving garment material at a constant temperature by adopting a jig dyeing method; when dyeing for one half of the total dyeing time, adding 14-36g / L of sodium carbonate to the first coloring agent, uniformly stirring, then adding the second coloring agent to the first coloring agent, keeping temperature at 55-65 DEG C, dyeing at a constant temperature by adopting a jig dyeing method till the total dyeing time is over, and discharging waste liquid, wherein the total dyeing time is 60-200 minutes. The silk-cotton interweaving garment material obtained by adopting the method has the advantages that the dye up-take of silk fibers and cotton fibers is consistent, the color fastness of cotton is improved, the fabric obtained by adopting the method has bright integral color without exposed white, and the color fastness of the fabric is high.
Owner:ZIBO DARANFANG SILK GRP

Preparation method and application method of low-temperature low-chromium dyeing auxiliary agent of acidic medium dye for wool

The invention discloses a preparation method and an application method of a low-temperature low-chromium dyeing auxiliary agent of an acidic medium dye for wool. The preparation method comprises the steps that: 1, protein powder is prepared by using waste duck feather, wherein (1) the duck feather is subjected to pretreatment; (2) the suck feather is subjected to a dissolving treatment; and (3) duck feather protein powder is prepared; 2, a sodium hydroxide solution is prepared, and the sodium hydroxide solution is used for dissolving the duck feather protein powder; 3, sodium hydroxide, triethanolamine, and epichlorohydrin are adopted for preparing a cationic quaternary ammonium salt cross-linking modification agent WLS; and 4, the low-temperature low-chromium dyeing auxiliary agent for the acidic medium dye is prepared. The auxiliary agent can be used as a wool modification agent. After wool fibers are modified, wool fiber dyeing properties of acidic medium dyes are greatly improved, dye uptake percentage rate can be improved, mordant absorption performance of the dye is improved, chromium pollution in dye wastewater is reduced, wool fiber low-temperature low-chromium dyeing is realized, and waste duck feather keratin is effectively utilized. After modification, the wearability of wool products is improved.
Owner:XI'AN POLYTECHNIC UNIVERSITY

Shell and manufacturing method therefor, and electronic equipment

Embodiments of the invention disclose a shell and a manufacturing method therefor, and electronic equipment. The manufacturing method for the shell comprises the steps of providing a shell substrate and performing oxidization treatment on the outer surface of the shell substrate to form an oxidation film on the outer surface of the shell substrate; performing dyeing treatment of a first color on the oxidization film in a direction from the fourth edge to the second edge in sequence, wherein the dyeing time is reduced in sequence, and forming the first color on the oxidization film, wherein thefirst color is shallowed in a direction from the fourth edge to the second edge gradually; and performing dyeing treatment of a second color on the oxidization film in a direction from the second edge to the fourth edge in sequence, wherein the dyeing time is reduced in sequence, and forming the second color on the oxidization film, wherein the second color is shallowed in a direction from the second edge to the fourth edge gradually, forming the first color close to the fourth edge and the second color close to the second edge on the oxidization film, and forming a mixed color between the fourth edge and the second edge. By virtue of the embodiments, the processes can be reduced.
Owner:GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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