The invention discloses a manufacturing method of oil absorbing
fiber felt, belonging to the technical field of manufacturing of
fiber felts. By simultaneously adopting a semi-
interpenetrating polymer network technique and an electrostatic
spinning technique, the manufacturing method comprises the following steps: firstly, synthesizing monomers, which are unlikely to form cross-linked structures, to linear non-crosslinking
methacrylate polymers by
suspension polymerization; dissolving the polymers in a
solvent suitable for electrostatic
spinning to prepare liquor, and adding monomers, which are likely to form cross-linked structures and contain an initiator, into the liquor; preparing
polymer liquor containing the semi-interpenetrating
network structure by liquor
polymerization; after insulating and defoaming, spraying the liquor to a receiving roller by an electrostatic
spinning method; and along with volatilization of the
solvent, after fibers are cured, fixing the semi-interpenetrating
network structure inside the fibers so as to form the
fiber felt with an intrinsic oil absorbing function. Compared with existing
polypropylene fiber felt, the fiber felt disclosed by the invention has the advantages of higher adsorption rate, stronger oil keeping capacity and the like, and satisfies the industrial practical demands.