A kind of preparation technology of heating fiber by gel method
A heating fiber and preparation technology, applied in fiber treatment, fiber type, spinning solution preparation, etc., can solve the problems of easy generation of static electricity and poor hygroscopicity of PET fibers, etc., to improve warmth retention, solve poor hygroscopicity and easy generation of static electricity , The effect of preventing the effect of moisture absorption and heat generation from dropping suddenly
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Embodiment 1
[0026] (1) Add a volume concentration of 1% acetic acid aqueous solution to the chitosan under stirring until it is completely dissolved, the dosage ratio of chitosan and acetic acid aqueous solution is 2 mg / mL, and then add 2-[(2,2,2-trifluoro Ethoxy)methyl]ethylene oxide, chitosan, 2-[(2,2,2-trifluoroethoxy)methyl]ethylene oxide in a molar ratio of 1:1, chitosan Based on the molar amount of primary amine groups contained, heat to 50 °C and keep reacting until the reaction of 2-[(2,2,2-trifluoroethoxy)methyl]oxirane is complete, and add dropwise after the completion of the reaction. Anhydrous ethanol until no precipitate is formed, suction filtration, washing with cold water, drying in an oven at 80° C. to obtain modified chitosan.
[0027] (2) Add 100 parts of modified chitosan prepared in step (1) into 80° C. hot water with stirring, and then add 2.5 parts of gelatin, mix well, and the solid content of the gel is 60wt% to obtain a gel.
[0028] (3) Immerse the PET fiber in...
Embodiment 2
[0030] (1) Add 1% acetic acid aqueous solution by volume to chitosan under stirring until it is completely dissolved, the dosage ratio of chitosan and acetic acid aqueous solution is 1 mg / mL, and then add 2-[(2,2,2-trifluoro Ethoxy)methyl]ethylene oxide, chitosan, 2-[(2,2,2-trifluoroethoxy)methyl]ethylene oxide in a molar ratio of 1:1, chitosan Based on the molar amount of primary amine groups contained, heat to 50 °C and keep reacting until the reaction of 2-[(2,2,2-trifluoroethoxy)methyl]oxirane is complete, and add dropwise after the completion of the reaction. Anhydrous ethanol until no precipitate is formed, suction filtration, washing with cold water, drying in an oven at 80° C. to obtain modified chitosan.
[0031] (2) Add 100 parts of modified chitosan prepared in step (1) into 80° C. hot water with stirring, and then add 5 parts of gelatin, mix well, and the solid content of the gel is 55wt% to obtain a gel.
[0032] (3) Immerse PET fiber in the gel prepared in step ...
Embodiment 3
[0034] (1) Add a volume concentration of 1% acetic acid aqueous solution to the chitosan under stirring until it is completely dissolved, the dosage ratio of chitosan and acetic acid aqueous solution is 2 mg / mL, and then add 2-[(2,2,2-trifluoro Ethoxy)methyl]ethylene oxide, chitosan, 2-[(2,2,2-trifluoroethoxy)methyl]ethylene oxide in a molar ratio of 1:1, chitosan Based on the molar amount of primary amine groups contained, heat to 50 °C and keep reacting until the reaction of 2-[(2,2,2-trifluoroethoxy)methyl]oxirane is complete, and add dropwise after the completion of the reaction. Anhydrous ethanol until no precipitate is formed, suction filtration, washing with cold water, drying in an oven at 80° C. to obtain modified chitosan.
[0035] (2) Add 100 parts of modified chitosan prepared in step (1) into 80° C. hot water with stirring, and then add 4 parts of gelatin, mix well, and the solid content of the gel is 65wt% to obtain a gel.
[0036] (3) Immerse PET fiber in the g...
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