Super-hydrophobic modification method for substance containing leather collagen fibers, tanning-agent-free tanning method and leather product
A technology of superhydrophobic modification and skin collagen, which is applied in the field of tanning, which can solve the problems of chrome tanning agent pollution, complicated process, unstable performance, etc., and achieve the improvement of shrinkage temperature and denaturation temperature, improvement of comprehensive performance, and high fiber dispersion sexual effect
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Embodiment 1
[0092] The present embodiment provides the superhydrophobic modification method of the material containing skin collagen fiber, comprises the following steps:
[0093] (1) Soak the skin collagen fiber raw material in water for more than 12 hours to ensure full penetration, then add 10wt% acetic acid aqueous solution and / or 10wt% sodium bicarbonate aqueous solution to the water to adjust the pH to 6.5, and then filter the excess water. The skin collagen fibers were soaked and stirred in absolute ethanol, repeated 4 times, soaked for 2 hours each time, and then vacuum filtered to obtain skin collagen fibers with a water content of about 16.3%.
[0094] (2) Take 10 g of skin collagen fibers treated in step (1), immerse them in 100 mL of isopropanol solution containing 3 g of perfluorodecyltriethoxysilane, soak and stir at 25°C for 24 hours, and then remove by suction filtration The excess liquid was dried at 120°C for 4 hours.
[0095] (3) Wash the skin collagen fibers obtained ...
Embodiment 2
[0099] The present embodiment provides the superhydrophobic modification method of the material containing skin collagen fiber, comprises the following steps:
[0100] (1) Soak the skin collagen fiber raw material in water for more than 12 hours to ensure full penetration, then add 10wt% acetic acid aqueous solution and / or 10wt% sodium bicarbonate aqueous solution to the water to adjust the pH to 6.5, and then filter the excess water. The material containing skin collagen fibers was soaked in absolute ethanol and stirred, and repeated 4 times, soaking for 2 hours each time, and then vacuum filtered to obtain skin collagen fibers with a water content of about 16.3%.
[0101] (2) Take 10 g of skin collagen fibers treated in step (1), immerse them in 100 mL of isopropanol solution containing 1 g of octadecyltrimethoxysilane, soak and stir at 30°C for 12 hours, and then remove excess by suction filtration. Liquid, dry at 105°C for 4h.
[0102] (3) Wash the skin collagen fibers ob...
Embodiment 3
[0104] The present embodiment provides the superhydrophobic modification method of the material containing skin collagen fiber, comprises the following steps:
[0105] (1) Soak the skin collagen fiber raw material in water for more than 12 hours to ensure full penetration, then add 10wt% acetic acid aqueous solution and / or 10wt% sodium bicarbonate aqueous solution to the water to adjust the pH to 6.5, and then filter the excess water. The material containing skin collagen fibers was soaked in absolute ethanol and stirred, and repeated 4 times, soaking for 2 hours each time, and then vacuum filtered to obtain skin collagen fibers with a water content of about 16.3%.
[0106] (2) Take 12 g of skin collagen fibers treated in step (1), immerse them in 100 mL of isopropanol solution containing 2 g of hexadecyltrimethoxysilane, soak and stir for 7 hours at 35 ° C, and remove excess by suction filtration. Liquid, dry at 120°C for 4h.
[0107] (3) Wash the skin collagen fiber obtaine...
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