Method for preparing collagen-fiber containing polyurethane-based synthetic paper
A collagen fiber and polyurethane-based technology is applied in the field of preparation of polyurethane-based synthetic paper, which can solve the problems of environmental pollution, long ink drying time, and high production energy consumption, and achieve the effects of rationally utilizing resources, improving application value, and reducing production costs.
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Embodiment 1
[0027] Will include 4.5 kg of cowhide collagen fiber powder, 49.4 kg of CaCl with a solid mass content of 10% 2 The solution was mixed and stirred for 1.5 hours, and slowly added dropwise with a solid mass content of 5% Na 2 CO 3 The solution was 94.3 kg; the hybrid material obtained after the reaction was suction filtered and washed with water, and the hybrid material was fully ground with a grinder, and then placed in a vacuum drying oven for sufficient drying (the temperature in the drying oven was 105°C). collagen fibers / CaCO 3 Hybrid material (180 mesh fineness). Add 3 kg of isophorone diisocyanate, 100 kg of polytetrahydrofuran ether diol (the number-average molecular weight is 8000), 0.1 kg of triethanolamine, and 20 kg of dimethylformamide into a mixing chamber equipped with a stirrer, thermometer and reflux condensing In the reaction kettle of the reactor, react at a temperature of 80°C for 2 hours; then add 7 kg of 1,4'-butanediol and 10 kg of isophorone diisocyan...
Embodiment 2
[0030] Will include 24.8 kg of pigskin collagen fiber powder, 274.7 kg of CaCl with a solid mass content of 10% 2 The solution was mixed and stirred for 1.5 hours, and slowly added dropwise with a solid mass content of 5% Na 2 CO 3 The solution was 524.7 kg; the hybrid material obtained after the reaction was suction-filtered and washed with water, and the hybrid material was fully ground with a grinder, and then placed in a vacuum drying oven for sufficient drying (the temperature in the drying oven was 105°C). collagen fibers / CaCO 3 Hybrid material (600 mesh fineness). Add 4 kg of dicyclohexylmethane diisocyanate, 150 kg of polyethylene adipate diol (the number-average molecular weight is 8000), 0.2 kg of castor oil, and 130 kg of dimethylacetamide to the mixer , a thermometer and a reflux condenser, and reacted at a temperature of 80°C for 2 hours; then added 12 kg of 1,3'-propylene glycol and 15 kg of dicyclohexyl diisocyanate, and reacted at a temperature of 80°C for 2...
Embodiment 3
[0033] Will include 14 kg sheepskin collagen fiber powder, 155.4 kg solid mass content of 10% CaCl 2 The solution was mixed and stirred for 1.5 hours, and slowly added dropwise with a solid mass content of 5% Na 2 CO 3 The solution was 296.8 kg; the hybrid material obtained after the reaction was suction-filtered and washed with water, and the hybrid material was fully ground with a grinder, and then placed in a vacuum drying oven for sufficient drying (the temperature in the drying oven was 105°C). collagen fibers / CaCO 3 Hybrid material (300 mesh fineness). Add 3.5 kg of 1,6-hexamethylene diisocyanate, 116.6 kg of polycaprolactone diol (the number-average molecular weight is 12,000), 0.12 kg of trihydroxypropane, and 23.3 kg of dimethyl sulfoxide into the In the reactor with reflux condenser, react at a temperature of 80°C for 2 hours; then add 8.2 kg of diethylene glycol and 11.7 kg of 1,6-hexamethylene diisocyanate, and react at a temperature of 80°C for 2 hours to obtai...
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