Preparation method of hair protein fiber spinning solution
A protein fiber and spinning solution technology, which is applied in the direction of spinning solution preparation, cellulose/protein conjugated artificial filament, etc., can solve the problems of small proportion of regenerated protein fiber and low protein content of fiber, and achieve sustainable The effect of processing
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[0018] Preparation of hair solution A: The crushed hair is mechanically crushed, and the crushed hair particles are swelled with urea without chemical extraction of protein. The swollen hair colloid and polyacrylonitrile, polymethylacrylate, polyvinyl chloride, and aminated pyrophosphate One or more of esters, etc. are mixed together, dissolved in sodium thiocyanate solvent, under the action of epoxy crosslinking agent to form a multi-component system, and the system is ground at low temperature to make a hair solution, namely solution A . See attached figure 1 .
[0019] The key to the preparation of hair solution A is a process of pre-crosslinking high molecular polymers with highly swollen proteins to prepare a stable hair protein solution. Selection of raw materials This method introduces the use of shredded hair, but it is not limited to this kind, and it can also be poultry feathers, shredded wool, pig hair, etc. The first step of washing, drying and shredding: wash t...
Embodiment 1
[0025] For the preparation of hair solution, the basic process is shown in the appendix figure 1 .
[0026] Weigh 50g of hair powder, 5g of urea, 10g of polyacrylonitrile, 2ml of diglycidyl glycol ether, 300ml of sodium thiocyanate, 250ml of purified water, and a small amount of ammonia water. Add ammonia water to water first, the pH value of the ammonia solution is 8, then add urea to make it dissolve evenly, and prepare a swelling agent solution.
[0027] The hair powder is added to the swelling agent to make the powder gradually swell, and the S-S-bonds between the keratin molecules are sequentially opened from the surface to the inside to form a jelly-like viscoelastic body.
[0028] Add polyacrylonitrile into sodium thiocyanate solvent, heat and stir until completely dissolved, and prepare polyacrylonitrile solution.
[0029] Mix the hair jelly and polyacrylonitrile solution, and then add diglycidyl glycol ether. In the mixed system, hair powder accounts for 45%, sodiu...
Embodiment 2
[0031] A hair protein solution was prepared according to Example 1.
[0032]Weigh 100g of polyacrylonitrile (fiber grade), 20g of polyvinyl chloride, 15g of 2-ethyloxirane, 5g of dioctyl adipate, 5g of antioxidant (antioxidant 1010), and 5g of oxidized polyethylene wax.
[0033] Add 200ml of sodium thiocyanate solvent into the reaction kettle, then start to stir, heat up, add PAN, PVC, 2-ethyloxirane, dioctyl adipate in turn, and carry out preliminary mixing; then add antioxidant 1010 , Oxidized polyethylene wax, lubricants, other additives, etc., mixed at high speed, heated to 100±2°C for 10-15 minutes, after mixing, mixed in a low-speed mixer (110°C) for about 5 minutes, and then naturally cooled to 60 ~65°C discharge. The main components of the fiber-forming high molecular polymer solution are: high molecular polymer (PAN+PVC) accounts for 10-25% (mass ratio), functional additives account for 8-10% of the polymer, stabilizers account for the polymer The ratio is 1-3%.
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