Method for modifying fibers
A fiber modification and fiber technology, applied in the direction of post-treatment modification of cellulose pulp, no pigment coating, etc., can solve problems such as reduction, and achieve the effect of excellent wear resistance and enhanced tensile strength
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Embodiment 1
[0044] Disperse 50 g of the low-substituted cellulose ethers shown in Table 1 into 950 g of 0.5 wt % sodium hydroxide aqueous solution, and then use the relative collision unit "ALTEMIZER" manufactured by Sugino Machine Ltd to the dispersion to be sheared under a pressure of 150 MPa Perform high pressure dispersion. This high-pressure dispersion process was repeated 10 times to obtain a sheared low-substituted cellulose ether dispersion. A dispersion sample was prepared by adding 8 g of diphenylmethane diisocyanate per 100 g of the sheared cellulose ether dispersion. Next, the Knit Comber cotton thread #30 / 1 was dipped into the dispersion and squeezed with a roller calender to an absorption of 108%, dried thereupon, and then heated at 145° C. for 10 samples in minutes.
[0045] Each sample obtained in this way was subjected to the following test methods to evaluate fuzziness, tensile strength, abrasion resistance, antistatic property, water absorption and washing durability....
Embodiment 2 to 8
[0047] 50 g of the low-substituted cellulose ether shown in Table 1 was dispersed in 950 g of water, and then the dispersion to be sheared was subjected to high-pressure dispersion at a pressure of 150 MPa using a relative collision unit "ALTEMIZER" manufactured by SuginoMachine Ltd. This high-pressure dispersion process was repeated 10 times to obtain a sheared low-substituted cellulose ether dispersion. A dispersion sample was prepared by adding 8 g of diphenylmethane diisocyanate per 100 g of the sheared cellulose ether dispersion. Next, Knit Comber cotton thread (Knit Comber cotton thread) #30 / 1 or wool #2 / 48 was dipped into the dispersion and squeezed with a roller calender to an absorption of 108%, followed by drying , and then heated at 145°C for 10 minutes to obtain a sample.
[0048] Each sample obtained in this manner was subjected to the following test methods to evaluate fuzziness, tensile strength, abrasion resistance, antistatic property, water absorption and wa...
Embodiment 9
[0050] 50 g of the low-substituted cellulose ether shown in Table 1 was dispersed in 950 g of water, and then the dispersion to be sheared was subjected to high-pressure dispersion at a pressure of 150 MPa using an opposing collision unit "ALTEMIZER" manufactured by SuginoMachine Ltd. This process was repeated 10 times to obtain a sheared low-substituted cellulose ether dispersion. A dispersion sample was prepared by adding 8 g of a cross-linked product of polyethylene oxide glycol and diphenylmethane diisocyanate per 100 g of the sheared cellulose ether dispersion as an aqueous emulsion of a cross-linked polyurethane resin. Next, wool #2 / 48 was dipped into the dispersion and squeezed with a roller calender with an absorption of 108%, and then heated at 95° C. for 20 minutes to obtain a sample. The samples thus obtained were subjected to the following test methods, and the results are shown in Table 1.
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