Hair keratin composite fiber and spinning method thereof
A protein compounding and protein technology, applied in cellulose/protein conjugated rayon, wet spinning, spinning solution preparation, etc., can solve the problem of high market price of protein fiber, high value and price of milk protein and soybean protein, Affect large-scale application and other issues, achieve good market prospects, low prices, and reduce production costs
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Embodiment 1
[0045] According to the calculation of 1 ton of finished fiber per batch, the protein content is 20%, the degree of hydroformylation is 32%, the moisture regain is 5%, the oil content is 0.4%, and the stock solution concentration is 16.5%.
[0046] Hair keratin protein solid: 380kg (moisture content about 50%, protein 190kg)
[0047] Sodium hydroxide: 16kg (used as a 20-30% solution)
[0048] Polyvinyl alcohol (pure): 720kg (wet weight after washing is about 1440kg)
[0049] Total stock solution: 5612kg
[0050] Added water: 5612-380-16-1440=3776kg
[0051] 1. Preparation of spinning dope
[0052] (1) Dissolution of hair keratin solids
[0053] Add 3776kg of warm water at 40°C to the dissolving machine, stir, add 380kg of hair keratin solids, stir for 10 minutes, slowly add lye containing 16kg of NaOH, heat up to 70°C, stir and dissolve for 30 minutes, filter, and keep warm at 80°C stand-by.
[0054] (2), washing of polyvinyl alcohol
[0055] Add 800kg of polyvinyl alco...
Embodiment 2
[0081] Calculated on the basis of 1 ton of finished fiber per batch, with protein content of 30%, degree of hydroformylation of 30%, moisture regain of 5%, oil content of 0.4%, and stock solution concentration of 18.0%, the input required:
[0082] Hair keratin protein solution: 3276kg (protein content 8.7%, protein 285kg)
[0083] Polyvinyl alcohol (pure): 630kg (wet weight after washing is about 1260kg)
[0084] Total stock solution: 5083kg
[0085] Added water: 5083-3276-1260=547kg
[0086] 1. Preparation of spinning dope
[0087] (1), washing of polyvinyl alcohol
[0088] Add 700kg of polyvinyl alcohol for spinning with a purity of 90% (including 630kg of pure polyvinyl alcohol) into the polyvinyl alcohol water car wash, add 4 times the weight of polyvinyl alcohol in warm water at 30°C, soak for 2 hours, drain the water, and then Add warm water at 30°C to submerge the polyvinyl alcohol, and drain the water after soaking for 30 minutes. The polyvinyl alcohol after wash...
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