A special filling masterbatch for flat yarn and its preparation method
A technology for filling masterbatch and flat yarn, which is applied in the manufacture of rayon, single-component polyolefin rayon, fiber chemical characteristics, etc., can solve the problems of easy aging and degradation of flat yarn, and achieve easy implementation and control, Improve the effect of anti-aging and beneficial to industrial production
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Embodiment 1
[0039] 1) Calcinate 75 parts by weight of talcum powder and 5 parts by weight of hydrotalcite powder at 200-250°C for 0.5 hours to purify, and then mix them with aluminum hydroxide colloid to make a slurry. The amount of aluminum hydroxide colloid is talc 5 times the mass of the powder, add 3 parts by weight of composite colloid and disperse in a high-speed mixer for 1 hour for colloid intercalation, wash to neutrality, filter, and dry for later use;
[0040] 2) 5 parts by weight of adipic acid and the colloidal intercalated talc powder obtained in step 1) are sent into the fluidized bed from the lower part of the fluidized bed by the airflow. cladding;
[0041] 3) Add the adipic acid-coated talc powder obtained in step 2) and 0.5 parts by weight of N,N′-dicyclohexylcarbodiimide into the reactor to seal it, pressurize and heat up, set the pressure to 5MPa, and raise the temperature to 180°C , stirring and heat preservation for 1 hour, and stirring at 200-300r / min during the h...
Embodiment 2
[0045] 1) Calcinate 80 parts by weight of talcum powder and 8 parts by weight of hydrotalcite powder at 200-250°C for 1 hour to purify, and then mix them with aluminum hydroxide colloid to make a slurry. The amount of aluminum hydroxide colloid is talc 3 times the mass of the powder, add 4 parts by weight of composite colloid and disperse in a high-speed mixer for 1.5 hours for colloid intercalation, wash to neutrality, filter, and dry for later use;
[0046] 2) Send 6 parts by weight of azelaic acid and the colloidal intercalated talc powder obtained in step 1) into the fluidized bed from the lower part of the fluidized bed by airflow, and the colloidal intercalated talc powder will be covered with azelaic acid as the airflow speed increases. cladding;
[0047] 3) Add the azelaic acid-coated talc powder obtained in step 2) and 0.8 parts by weight of diisopropylcarbodiimide into the reactor to seal, pressurize and heat up, set the pressure to 8MPa, raise the temperature to 150...
Embodiment 3
[0051] 1) Calcining 85 parts by weight of talcum powder and 10 parts by weight of hydrotalcite powder at 200-250°C for 0.5 hours for purification, and then mixing them with aluminum hydroxide colloidal liquid to make a slurry, the amount of aluminum hydroxide colloidal liquid is talc 4 times the mass of the powder, add 4 parts by weight of composite colloid and disperse in a high-speed mixer for 1 hour for colloid intercalation, wash to neutrality, filter, and dry for later use;
[0052] 2) Send 5-8 parts by weight of sebacic acid and the colloidal intercalation talc powder obtained in step 1) into the fluidized bed from the lower part of the fluidized bed by the airflow, and the colloidal intercalation talc powder is Diacid coating;
[0053] 3) Add the sebacic acid-coated talc powder obtained in step 2) and -1 weight part of condensing agent into the reactor to seal, pressurize and heat up, set the pressure to 10MPa, and raise the temperature to 150-220°C, stir and keep warm ...
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