Protein-modified acrylic fiber spinning solution with phase-change temperature regulating function and preparation method thereof
A technology for modifying acrylic fiber and spinning solution, which is applied in the direction of cellulose/protein conjugated rayon, rayon manufacturing, fiber chemical characteristics, etc., and can solve problems such as high transportation costs, difficulty in fully mixing and dispersing, and high risk factors
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[0047] The preparation method of the above-mentioned protein modified acrylic fiber spinning solution, the preparation steps are:
[0048]A. Take hydroxyl-terminated polybutadiene-isocyanate prepolymer, n-alkane paraffin wax with carbon 18-20, β-methyl epichlorohydrin or tetrahydrofuran, blend to form blend A, and heat up to 40-45°C stand-by;
[0049] B. Take component B and heat it up to 65°C-50°C for use; take component C and heat it up to 40-45°C for use;
[0050] C. Take component B and put it into a container with a dispersing emulsifier at a constant temperature of 65°C-50°C, while stirring component B, gradually add blend A, after the addition, at 300-500 rpm Stir until the blend A can be seen under the microscope to be emulsified into particles of 3 microns and below, then continue to stir for 5-10 minutes, and then uniformly reduce the stirring speed to 45 rpm-50 rpm and continue stirring for 30 minutes Minutes (the "hydroxyl-terminated polybutadiene-isocyanate prep...
Embodiment 1
[0060] A. Take hydroxyl-terminated polybutadiene with a hydroxyl value of about 0.9 and hexamethylene diisocyanate to prepolymerize into 20% of hydroxyl-terminated polybutadiene-isocyanate prepolymer containing about 5% unreacted isocyanate radicals, Take 77% of normal paraffin with carbon 18-20 and blend 77% of paraffin, take 3% of tetrahydrofuran, blend to form a blend A equal to 1.8 kg, and heat it up to 45°C for use.
[0061] B, take 5% solid content, average molecular weight 60KD wool protein hydrogel (ingredient B) is equal to 15 kilograms, be warmed up to-50 ℃ stand-by; Take 11 kilograms of sodium thiocyanate; Take sodium thiocyanate and water The sodium thiocyanate method acrylic fiber spinning liquid (component C) that polymerizes that the wet spinning of solvent is used to produce standard acrylic fiber is equal to 150 kilograms, and its solid content of polymer is 5%, and constant temperature is stand-by at 40 ℃; Ethylene glycol (1500 molecular weight) diacrylate (c...
Embodiment 2
[0065] A. Take hydroxyl-terminated polybutadiene with a hydroxyl value of about 0.8 and diphenylmethane diisocyanate to prepolymerize into a hydroxyl-terminated polybutadiene-isocyanate prepolymer containing about 4% unreacted isocyanate radicals 15% , take 80% of normal alkanes with carbon 18-20 to blend paraffin wax, take 5% of β-methyl epichlorohydrin, blend to form a blend A equal to 2 kg, and heat up to 40°C for use;
[0066] B|. Take 15 kg of silk fibroin hydrogel (ingredient B) with a solid content of 6% and an average molecular weight of 50KD. Heat up to 50°C for later use. Take 12 kg of sodium thiocyanate; take sodium thiocyanate The sodium thiocyanate method acrylic fiber spinning liquid (component C) that the polymerized sodium thiocyanate method acrylic fiber spinning solution (composition C) that the wet spinning of solvent is used to produce standard acrylic fiber is equal to 150 kilograms, and the solid content of its polymer is 6%, and constant temperature is st...
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