Preparation method for graphene reinforced polymer porous sponge fiber
A porous sponge and polymer technology, applied in the direction of single-component synthetic polymer rayon, chemical post-treatment of synthetic polymer rayon, fiber treatment, etc., to achieve the effect of low density, large specific surface area, and easy large-scale production
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[0021] The specific embodiment of the preparation method of a graphene-enhanced polymer porous sponge fiber of the present invention comprises the following steps:
[0022] (1) Under the condition of room temperature, a certain concentration of graphene oxide solution is ultrasonically treated in a 1-50 Hz ultrasonic bath for 0.5-1 h to obtain a uniformly dispersed graphene oxide solution. A certain amount of polymer is dissolved in the corresponding solvent to obtain a polymer solution with a certain concentration. The uniformly dispersed graphene oxide dispersion solution is added to the polymer solution, slowly added while stirring, and after complete addition, the stirring is continued for 4-8 hours to obtain a uniformly mixed graphene oxide-polymer blend spinning solution.
[0023] (2) The graphene oxide-polymer blended spinning solution is allowed to stand for deaeration for 8-12 hours, then transferred to the wet spinning equipment, and the spinning solution is sprayed ...
Example Embodiment
[0027] Example 1
[0028] (1) Under room temperature conditions, the graphene oxide solution with a mass concentration of 2.5% was ultrasonically treated in an ultrasonic bath at 1 Hz for 0.5 h to obtain a uniformly dispersed graphene oxide solution. Then a certain amount of regenerated cellulose pulp is impregnated, pressed, pulverized, aged, yellowed and dissolved to obtain a regenerated cellulose solution, wherein the solid content in the spinning solution: 6.81%, alkali content: 4.56%, viscosity: 41s, maturity: 8ml (10%NH4Cl), add the uniformly dispersed graphene oxide solution to the regenerated cellulose solution, the mass ratio of graphene in the mixed solution is 5%, slowly add it while stirring, and wait until it is completely added. Continue to stir for 4h to obtain a homogeneously mixed graphene oxide-regenerated cellulose blend spinning solution.
[0029] (2) The graphene oxide-regenerated cellulose blended spinning solution was left to stand for deaeration for 8 ...
Example Embodiment
[0032] Example 2
[0033] (1) Under room temperature conditions, the graphene oxide solution with a mass concentration of 3% was ultrasonically treated in an ultrasonic bath at 25 Hz for 0.8 h to obtain a uniformly dispersed graphene oxide solution. A certain amount of polyacrylonitrile is dissolved in a certain concentration of DMF solution to obtain a polyacrylonitrile solution. Add the uniformly dispersed graphene oxide solution into the polyacrylonitrile solution, wherein the content of graphene oxide in the mixed solution is 8%, slowly add while stirring, and continue to stir for 5 hours after complete addition to obtain uniformly mixed graphene oxide - Polyacrylonitrile blended spinning solution.
[0034] (2) The graphene oxide-polyacrylonitrile blended spinning solution was allowed to stand for deaeration for 9 hours, transferred to a wet spinning equipment, and the spinning solution was sprayed into a coagulation bath using a spinneret with a diameter of 0.08 mm to co...
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