Polypropylene profiled fiber for dust removing and filtering

Abstract

The invention discloses polypropylene profiled fiber for dust removing and filtering. The polypropylene profiled fiber is prepared from polypropylene resin, nanometer ceramic powder, nanometer graphene, a silane coupling agent, stearic acid and acetone, the preparation processes of the polypropylene profiled fiber for dust removing and filtering comprise raw material weighing, preparation of modified nanometer ceramic powder, preparation of a mixed material of the stearic acid and the modified nanometer ceramic powder and preparation of the polypropylene profiled fiber. Different profile spinnerets extrude profiled polypropylene fiber yarns out, the section of the fiber is trilobal shape, C-shaped, round and hollow, cruciform, 'mi'-shaped or triangular, the yarns are smooth and round, thesection profile degree of the fiber is 35%-55%, the length of the fiber is 58-100 mm, the fiber fineness is 5.2-13 dtex, the filtering efficiency of the polypropylene profiled fiber is high, the impurity containing and assimilative capacity is high and is 2-3 times that of an ordinary filtering fiber product, the yield strength of the fiber is improved by 3-5 MPa, the elongation at break is improved by 16-25%, and the elasticity modulus is increased by 150-200 MPa.

Description

technical field [0001] The invention relates to the field of special-shaped fiber materials, in particular to a polypropylene special-shaped fiber used for dust removal and filtration. Background technique [0002] In recent years, with the continuous innovation and development of polypropylene filament and its new fabric varieties, the development prospect of special-shaped polypropylene filament is broad. Special-shaped cross-section fibers can improve the performance of synthetic fibers, endow fibers with special luster, and improve the feel of fibers. Shaped fibers are obtained from different spinneret cross-sectional shapes, which change the fiber's refractive index to light, hand feeling, elasticity, anti-fouling, warmth retention and anti-pilling properties. The cross-sectional shape of ordinary fibers is round, while the cross-sectional shapes of special-shaped fibers are flat, cross-shaped, polygonal, multi-lobal, H-shaped, dumbbell-shaped, etc. [0003] The indep...

AI Technical Summary

Problems solved by technology

In the 1980s, triangular, rice-shaped, and H-shaped special-shaped cross-section fibers were successfully trial-produced at China Textile University. Although imported equipment was absorbed and improved to form a set of own technologies, the differentiation rate of synthetic products in my country is 60%. Now, although There are various special-shaped spinnerets that can produce a variety of special-shaped fibers, but there is still a big gap in level and quantity with Japan, the United States, Europe and other places, and industrialized products are scarce

[0004] Polypropylene is an isotactic polypropylene synthetic fiber made by using propylene, a by-product of petroleum refining, as a raw material. The cross-sectional shapes of common special-shaped polypropylene mainly include trilobal and Y-shaped. The product quality of special-shaped polypropylene filaments and the selection of special-shaped hole spinneret And related to the structure and quality of raw materials, the existing special-shaped polypropylene fiber filaments have the characteristics of luster, softness and fluffy, but the yield strength, elastic modulus and elongation at break of the existing polypropylene special-shaped fiber filaments still cannot meet people's needs. The actual application needs need to be further improved, and the functional application field of polypropylene shaped fibers is relatively narrow. There are records of antibacterial polypropylene shaped fibers in relevant literature, but the research on polypropylene shaped fibers with dust removal and filtering functions is still blank

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