A kind of solid-phase tanning treatment method of natural leather powder
A treatment method and skin powder technology, which is applied in chemical treatment before tanning, tanning treatment, small raw hide/large raw hide/leather/fur treatment, etc.
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Embodiment 1
[0011] First, 100 parts by mass of dry natural delimed kraft powder with a particle size of 0.1-100 microns is added into a closed stainless steel reactor equipped with a heating jacket, a stirring function, a spraying device, and an air vent. Then 20 parts by mass of formic acid pretreatment agent with a concentration of 1% was sprayed into the reactor at a rate of 1 L / min by spray equipment to pretreat the skin powder for 60 minutes, so that the surface fibers of the skin powder were positively charged.
[0012] Adjust the temperature of the reactor heating jacket to 30°C to heat the skin powder to 30°C; 20 parts by mass of tetrakis hydroxymethyl phosphonium salt chrome-free tanning agent is sprayed into the reactor at a rate of 1L / min by spray equipment, and the reaction 30min, so that it fully penetrates into the skin powder fiber.
[0013] The skin powder was fixed by adjusting the temperature of the heating mantle to 50°C for 60 minutes, and then heated to 105°C for 20 m...
Embodiment 2
[0015] First, 100 parts by mass of dry natural raw material sheepskin powder with a particle size of 100-200 microns is added into a closed stainless steel reactor equipped with a heating jacket, a stirring function, a spraying device, and an air vent. Then, 20 parts by mass of acetic acid pretreatment agent with a concentration of 2% was sprayed into the reactor at a rate of 0.8 L / min by spray equipment to pretreat the skin powder for 30 minutes, so that the surface fibers of the skin powder were positively charged.
[0016] Adjust the temperature of the heating jacket of the reactor to 30°C to heat the skin powder to 30°C; spray 20 parts by mass of tetrahydroxymethylphosphonium salt chrome-free tanning agent solution into the reactor by spraying at a rate of 0.5 L / min , reacted for 40 minutes, so that it can fully penetrate into the skin powder fiber.
[0017] The solid-phase tanning is completed by irradiating with infrared rays for a fixed time of 60 minutes, then heating ...
Embodiment 3
[0019] Firstly, 100 parts by mass of plant-aluminum combined tanned pigskin powder with a particle size of 200-300 microns in a dry state are installed in a closed stainless steel reactor equipped with a heating jacket, a stirring function, a spraying device, and an air vent. Then 20 parts by mass of sulfuric acid with a concentration of 0.2% was sprayed into the reactor at a rate of 1 L / min by spray equipment to pretreat the skin powder for 90 minutes, so that the surface fibers of the skin powder were positively charged.
[0020] Adjust the temperature value of the heating jacket of the reactor to 40°C to heat the skin powder to 40°C; 20 parts by mass of tetrahydroxymethylphosphonium salt chrome-free tanning agent solution is sprayed into the reactor at a rate of 1L / min by spraying equipment, React for 30 minutes to fully penetrate into the skin powder fiber.
[0021] Spray 5 parts by mass of ethylenediamine fixative with a concentration of 5% into the reactor at a rate of 1...
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Abstract
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