Polymeric fiber and preparation method thereof
A polymer and fiber technology, applied in the field of composite ultra-high molecular weight polyethylene fiber and its preparation, can solve the problems of poor dispersion of inorganic fillers and high viscoelasticity, and achieve good spinnability, long-term stability, and good toughness Effect
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[0075] In one embodiment of the present invention, refer to figure 1 , figure 2 , Provides a method for preparing polymer fibers, using the components and contents of the above-mentioned polymer fibers, including:
[0076] Filler premix: Mix the inorganic ultrafine filler with solvent A and stir with an emulsifier to obtain a filler premix;
[0077] Pre-mixing of nano microchips: mix nano microchips with solvent B and dispersant, stir, enter the homogenizer, and discharge to form a slurry;
[0078] Preparation of the spinning mixture: swelling the filler premix, and mixing the slurry of the nanochips with solvent C, UHMWPE powder and antioxidant to obtain a spinning mixture;
[0079] Preparation of polymer fibers: swelling, melt-extrusion, and cooling the spinning mixture to obtain jelly threads, and polymer fibers are prepared from the jelly threads.
[0080] The solvent A, solvent B, and solvent C are all one or a combination of two or more of n-heptane, cyclohexane, paraffin oil, v...
Embodiment 1
[0110] 1) Preparation of fiber premix
[0111] Pour 2kg of basalt fiber into 98kg of paraffin oil to premix, and stir for 15min at 1000rpm with an emulsifier.
[0112] 2) Preparation of graphene slurry
[0113] Add 0.1kg of graphene and 0.02kg of dispersant AFCONA4700 to 99.88kg of paraffin oil (the graphene slurry concentration is 0.1%). After stirring for 10 minutes at a high-speed shearing machine at 500 rpm, enter the ultra-high pressure micro-jet homogenizer (pressure Set to 3000bar), grind twice to the particle size required by graphene (D99≤5um), and discharge.
[0114] 3) Preparation of spinning solution
[0115] Pour the solutions of steps 1) and 2) into a swelling kettle containing 1101.2 kg of paraffin oil under high-speed stirring, and then add 97.78 kg of UHMWPE powder and 0.1 kg of antioxidant 1010 (graphene accounts for 0.1% of the composite fiber, basalt The fiber accounts for 2% of the composite fiber, and the antioxidant accounts for 0.1% of the composite fiber), whi...
Embodiment 2
[0119] 1) Preparation of fiber premix
[0120] Pour 6kg of silica particles into 114kg of white oil for premixing, and stir for 10min with an emulsifier at 2000rpm.
[0121] 2) Preparation of graphene slurry
[0122] Add 0.5kg of graphene powder and 0.5kg of dispersant PSS to 49kg of white oil (the graphene slurry concentration is 1%). After stirring for 7 minutes at a high-speed shearing machine at 2000 rpm, enter the ultra-high pressure micro-jet homogenizer ( The pressure is set to 3200bar), cyclically grind twice to the particle size required by graphene (D99≤5um), and discharge.
[0123] 3) Preparation of spinning solution
[0124] Pour the solutions of steps 1) and 2) into a swelling kettle containing 1072.44kg of white oil under high-speed stirring, and then add 92.99kg UHMWPE powder and 0.01kg antioxidant DNP (graphene accounts for 0.5% of the composite fiber, The silica particles account for 6% of the composite fiber, and the antioxidant accounts for 0.01% of the composite fi...
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