Composite fiber, manufacturing method and orthopedic binding wire
A composite fiber and bundling wire technology, applied in the field of medical devices, achieves the effects of good elasticity, easy knotting and increased friction
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[0022] 1. Preparation of composite fibers
[0023] The composite fiber of the invention is made by compounding polyamide 6 fiber and poly(methyl methacrylate-co-N-vinylpyrrolidone) polymer. Polyamide 6 fibers can be commercially available, with a number-average molecular weight of 15,000-30,000; poly(methyl methacrylate-co-N-vinylpyrrolidone) polymers can be obtained by polymerization, with a number-average molecular weight of 7-20 Ten thousand.
[0024] The preparation method comprises two steps of surface activation of the polyamide 6 fiber and coating and compounding. Surface activation can be performed using an acid solution, for example, surface-activated polyamide 6 fibers can be obtained by soaking polyamide 6 fibers in an acid solution. Afterwards, the surface-activated polyamide 6 fiber is immersed in the viscous liquid of poly(methyl methacrylate-co-N-vinylpyrrolidone) polymer, so that the latter is coated and composited on the surface of the polyamide 6 fiber . ...
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[0031] In the examples, the characterization of the tensile strength and water absorption of the fibers is carried out by means commonly used in the field, so details are not repeated here.
[0032]
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