A kind of medical polyurethane elastomer with biocompatibility and preparation method thereof

A technology of polyurethane elastomer and biocompatibility, applied in the field of polyurethane elastic fibers, can solve the problems of difficulty in obtaining polyurethane elastic fibers with heat resistance, uniformity of filaments, not being widely promoted, insufficient mechanical properties and uniformity, etc. Achieve the effect of avoiding adverse effects, excellent biocompatibility, long-term application
CN108560076BActive Publication Date: 2020-09-25ZHEJIANG HUAFENG SPANDEX
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
ZHEJIANG HUAFENG SPANDEX
Publication Date
2020-09-25
Patent Text Reader

Abstract

The invention relates to a medical polyurethane elastic fiber with biocompatibility and a preparation method thereof. The preparation method comprises the following steps: 1) adding polyglycol A, aliphatic diisocyanate B, chain extender glycol C, a catalyst, an auxiliary additive and the like directly into a twin-screw reactor after metering for melting, mixing and slicing to prepare a polymer P1;2) mixing and reacting modified aliphatic diisocyanate B' with polyglycol A to generate a prepolymer P2; 3) after the polymer P1 is fused and extruded and fully mixed with the prepolymer P2 in a certain proportion in a static mixer, distributing the mixture to a spinneret plate through a melt metering pump; and 4) spinning the polyurethane elastic fiber through a spinning box, a side blowing cooling device, a spinning tunnel, false twisting, oiling and a silk guide roller. The polyurethane elastic fiber prepared by the method provided by the invention has excellent biocompatibility.
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Description

technical field

[0001] The invention relates to a medical polyurethane elastic fiber with biocompatibility and a preparation method thereof, belonging to the field of polyurethane elastic fiber. The spandex fiber prepared by the invention has excellent biocompatibility and can be used in the medical field, surgical sutures, elastic bandages and the like. Background technique

[0002] Polyurethane elastic fiber is a multi-block copolymer with alternating soft and hard segments. It has the advantages of high breaking strength and large elastic recovery rate. Its structure contains many -NHCOO- groups. By selecting appropriate soft and hard segments By combining the structure and its ratio, polymer materials with excellent physical and mechanical properties can be synthesized.

[0003] At present, the dry spinning method is the most widely used method for the production of polyurethane elastic fibers at home and abroad, accounting for more than 80% of the global spandex produc...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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