Moisture-absorption modifier, and its preparing method and use in polyamide fiber
A nylon fiber and modifier technology, applied in the field of blending modification, can solve the problems of unstable spinning, limited hygroscopic ability, uncomfortable contact, etc., and achieve excellent mechanical properties, high heat resistance, and strong hygroscopic ability. Effect
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Embodiment 1
[0021] In terms of parts by mass, 8 parts of copper sulfate pentahydrate, 12 parts of polyvinylpyrrolidone (K30), and 100 parts of distilled water were mixed to form solution 1, and stirred for 1 hour under the protection of nitrogen.
[0022] Mix 2 parts of hydrazine hydrate with a mass concentration of 80%, 4 parts of sodium hydroxide, and 5 parts of distilled water into solution 2.
[0023] Under the conditions of constant stirring and nitrogen protection, solution 2 was added dropwise to the reaction flask containing solution 1, and reacted for 3 hours at 20°C. After the reacted solution is placed in a vacuum state for 10 hours, the nano copper particles gradually precipitate out of the solution. After filtration, the filter cake is washed with distilled water several times and then placed in a vacuum oven at 40° C. for drying for 12 hours to prepare the nano copper particle catalyst.
Embodiment 2
[0025] In parts by mass, 16 parts of copper sulfate pentahydrate, 18 parts of polyvinylpyrrolidone (K30), and 100 parts of distilled water were mixed to form solution 1, and stirred for 2 hours under nitrogen protection.
[0026] 4 parts of hydrazine hydrate with a mass concentration of 80%, 8 parts of sodium hydroxide, and 20 parts of distilled water were prepared into solution 2.
[0027] Under the conditions of constant stirring and nitrogen protection, solution 2 was added dropwise to the reaction flask containing solution 1, and reacted for 4.5 hours at 50°C. After the reaction solution is placed in a vacuum state for 2 hours, the nano copper particles gradually precipitate out of the solution. After filtration, the filter cake is washed with distilled water several times, and then placed in a vacuum oven at 40°C for 24 hours to prepare the nano copper particle catalyst. .
Embodiment 3
[0029] In terms of parts by mass, 12 parts of copper sulfate pentahydrate, 10 parts of polyvinylpyrrolidone (K30), and 100 parts of distilled water were mixed to form solution 1, and stirred for 2 hours under the protection of nitrogen.
[0030] Mix 3.3 parts of hydrazine hydrate with a mass concentration of 80%, 3 parts of sodium hydroxide, and 10 parts of distilled water into solution 2. Under the conditions of constant stirring and nitrogen protection, solution 2 was added dropwise to the reaction flask containing solution 1, and reacted for 5 hours at 35°C. After the reacted solution is placed in a vacuum state for 20 hours, the nano copper particles gradually precipitate out of the solution. After filtration, the filter cake is washed with distilled water several times and then placed in a vacuum oven at 30° C. for drying for 18 hours to prepare the nano copper particle catalyst.
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