Dyeable fine denier polypropylene fibers of clay soil/polyolefin particle and preparation method thereof

Abstract

The invention relates to a clay / polyolefin granule dyeable fine denier polypropylene fiber. The composition thereof comprises clay / polyolefin composite granules and polypropylene granules with the weight ratio of 1-10:90-99; the preparation includes: modifying the clay by an organic modifying agent, mixing the modified clay with olefin monomers and an evocating agent, adding the mixture into aqueous solution containing a dispersing agent, introducing nitrogen for 60-90min, stirring while the reaction is performed, and after the granules are hardened, washing and drying the granules to obtain the clay / polyolefin composite granules; melting and mixing the clay / polyolefin granules with polypropylene granules, extruding and cooling, and granulizing by a granulator to obtain blended slices; processing the blended slices by a spinning machine to obtain fine denier filaments, and preparing dyeable fine denier polypropylene fiber by winding and drafting. In the method, clay inorganic substance is used as raw material, thereby lowering cost compared with rare earth, and generating no radioactivity; meanwhile the dye-uptake rate of the fine denier polypropylene fiber can achieve 85-92%.

Description

technical field [0001] The invention belongs to the field of preparation of dyeable fine-denier polypropylene fibers, in particular to a clay / polyolefin particle dyeable fine-denier polypropylene fiber and a preparation method thereof. Background technique [0002] Polypropylene fiber (polypropylene fiber) has many excellent characteristics and has been developed rapidly since its industrial production. However, due to the non-polar structure of polypropylene (PP), there is no polar group in its molecule that can be combined with any dye molecule, that is, no dye seat; and the crystallinity of polypropylene is very high, the structure is tight, and the dye molecule It can only diffuse or penetrate into the amorphous region of fiber molecules, but cannot enter the crystal region. Therefore, the dyeing performance of polypropylene fibers is poor. The fine-denier polypropylene fiber has a higher degree of orientation, a more regular arrangement of macromolecular chains in the ...

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Problems solved by technology

Polyolefin is a blending additive that can improve the dyeing performance of polypropylene. Xin Huang et al. The copolymerization product of monomer and styrene is used as an additive and blended with PP to improve its dyeing performance and color fastness, but it does not involve the influence of clay / polyolefin composite particles on the dyeing of polypropylene fibers

Chinese patent 03115777.7 is a preparation method of nanometer montmorillonite-styrene in-situ intercalation polymerization, which has not explained the interlayer spacing of the organically modified montmorillonite obtained by this method, nor has it involved its influence on the dyeing performance of polypropylene fine-denier fibers. The product prepared by this method is not suitable as a polymer additive for spinning

Chinese patent 200610023763.3 rare earth hybrid in-situ polymerization polyolefin polypropylene fine denier dyeable fiber resin and its preparation method and Chinese patent CN100414039C dyeing method of rare earth material modified polyolefin and polypropylene blended fine denier polypropylene, the method obtained is Rare earth hybrid modified polyolefin is mixed with polypropylene and melt spun to improve the dyeability of polypropylene, but clay inorganic substances are not involved

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