Patent ID: 8110525
Filing Date: 2012-02-07
Classification: D01F

Abstract:
1. A method of preparing an oil-absorbing fiber comprising the steps of: a) fully dissolving a dispersant accounting for 0.1-1% of the total mass of a methacrylate monomer and a deionized water wherein the volume ratio of said deionized water to said methacrylate monomer is 3:1 in a reaction vessel, adding said methacrylate monomer and an initiator accounting for 0.1-1% of the total mass of said methacrylate monomer to a reactor and stirring to form a homogenous solution, transferring said homogenous solution into said reaction vessel, charging nitrogen gas, stirring, raising temperature to 70-80° C., allowing to react for 2-6 hours, raising temperature to 90-100° C., allowing to react for 2-4 hours, collecting a resultant product, washing, drying, and obtaining a white resin, said methacrylate monomer comprising n-butyl methacrylate as a first monomer and hydroxyethyl methacrylate as a second monomer, n-butyl methacrylate accounting for 80-95% of the total mass of said methacrylate monomer, and hydroxyethyl methacrylate accounting for 5-20% of the total mass of said methacrylate monomer; b) drying said white resin, mixing with a swelling agent, and sealing the mixture at room temperature for 48-96 hours to yield a homogenous gel; c) grinding said gel completely, spinning by a plunger spinner, and coagulating with a coagulation bath to yield an as-spun oil-absorbing fiber; the spinning temperature being 90-200° C. and the coagulating temperature being 25-50° C.; and d) drawing said as-spun oil-absorbing fiber with a draw ratio of 2-6 at 25-80° C. to yield oil-absorbing fibers.