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Polypropylene fiber concrete reinforcing material as the application of more and more widely, this paper studies the production of single-modified polypropylene fibers丝切spinning off, after the drawing process and the mechanical properties of fibers. Through differential thermal analysis, melting index Miriam, acid-alkali experiments to study the modified polypropylene monofilament of heat resistance and chemical properties, through the experimental production of polypropylene spinning temperature, draw ratio Spinneret, water cooling conditions, After the stretching ratio, stretching temperature, after discussion, the results show that the modified polypropylene monofilament cut has good mechanical properties, excellent acid performance, better stability of spinning,
Is economically feasible concrete reinforcing fibers.

Polypropylene fiber concrete reinforcing materials as is widely used, this paper mainly studies of polypropylene fiber production monofilament cut off after spinning, tensile technique and the mechanical properties of the fiber. Through the differential thermal analysis, melting index, acid and alkali resistant, heat-resistant modification of pp monofilament, chemical properties, through the production experiment of polypropylene spinning temperature and silk spray head stretch, water cooling conditions and tensile rate after discussion, stretching temperature, the results showed that the polypropylene cut monofilament has good mechanical properties and excellent chemical resistance can, spinning stability is good, is economical and feasible concrete reinforcing fiber.