A kind of compound crystal transformation modification method of cotton fiber
A cotton fiber and composite crystal technology, applied in the field of cotton fiber composite crystal modification, can solve the problems of insignificant reduction of crystallinity, non-uniformity, fiber erosion, etc., and achieves improved dimensional stability, excellent softness, and no medium. The effect of loss
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Embodiment 1
[0026] A method for compound crystal modification modification of cotton fibers, the cotton fibers with a length of 10mm and a fineness of 0.05tex are placed in a closed container, filled with liquid ammonia, and pressurized at a constant speed of 0.1MPa / min to The modified pressure is 0.5Mpa, the pressure is maintained for 1min, and then released to 0.005Mpa within 5 seconds at a depressurization rate of 0.1MPa / s, and finally the material is removed by high-speed centrifugal dehydration, microwave heating and vacuum pumping. Modified medium, that is to obtain composite crystal modification modified cotton fiber. Among them, the high-speed centrifugal rotation speed reaches 100rpm, the rotation time can reach 10min, and the radial draft can reach 1mm; the power of a single modified kettle in microwave heating is 1kW; the vacuum is pumped to negative pressure and below. Compared with the microscopic lattice of the cotton fiber, the microscopic lattice of the composite crystal m...
Embodiment 2
[0028]A method for compound crystal modification modification of cotton fibers, the cotton fibers with a length of 18mm and a fineness of 0.18tex are placed in a closed container, filled with liquid ammonia, and pressurized at a constant speed of 0.2MPa / min to The modified pressure is 0.8Mpa, the pressure is maintained for 5min, and then released to 0.008Mpa within 5 seconds at a depressurization rate of 0.2MPa / s. Finally, the evaporation method of high-speed centrifugation, microwave heating and vacuum pumping is used to remove the material. Modified medium, that is to obtain composite crystal modification modified cotton fiber. Among them, the high-speed centrifugal rotation speed reaches 120rpm, the rotation time can reach 10min, and the radial draft can reach 1.5mm; the power of a single modified kettle in microwave heating is 5kW; the vacuum is pumped to negative pressure and below. Compared with the microscopic lattice of the cotton fiber, the microscopic lattice of the ...
Embodiment 3
[0030] A method for compound crystal modification modification of cotton fibers, the cotton fibers with a length of 50mm and a fineness of 0.22tex are placed in a closed container, filled with liquid ammonia, and pressurized at a constant speed of 0.2MPa / min to The modified pressure is 1Mpa, the pressure is maintained for 8min, and then released to 0.001Mpa within 3 seconds at a depressurization rate of 0.5MPa / s. Finally, the evaporation method of high-speed centrifugation, microwave heating and vacuum pumping is used to remove the impurities in the material. The modified medium is to obtain the composite crystal-modified cotton fiber. Among them, the high-speed centrifugal rotation speed reaches 140rpm, the rotation time can reach 10min, and the radial draft can reach 2mm; the power of a single modified kettle in microwave heating is 15kW; the vacuum is pumped to negative pressure and below. Compared with the microscopic lattice of the cotton fiber, the microscopic lattice of...
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