PET/PVA sea-island fiber with water-soluble sea facies, and production process of PET/PVA sea-island fiber

Abstract

The invention discloses a PET / PVA sea-island fiber with water-soluble sea facies. The PET / PVA sea-island fiber with the water-soluble sea facies is obtained through stretching and heat setting a nascent fiber formed by adopting PET as an island face component and PVA as a sea face component, wherein the island face component of the nascent fiber accounts for 60 percent to 85 percent of the cross section area of the fiber; the sea component accounts for 40 percent to 15 percent of the cross section area of the fiber; water-soluble PVA master batch is prepared by blending the following raw materials in parts by weight: 50 to 70 parts of polyvinyl alcohol, 15 to 25 parts of polyhydric alcohol or salt compound modifier, 3 to 7 parts of an antioxidant, 3 to 7 parts of a lubricating agent, and 25 to 35 parts of deionized water. The invention also provides a production process of the sea-island fiber. Compared with traditional PVA, according to the PET / PVA sea-island fiber with the water-soluble sea facies, provided by the invention, the melting point is reduced, so that the PVA sea component can be melt and compositely spun with the PET with a high melting point, the problem of PVA decomposition cannot happen while the melting point is reached, and the problem that the traditional PVA is decomposed when encountering the high-temperature PET so that melting and composite spinning cannot be achieved is solved.

Description

technical field [0001] The invention relates to the technical field of superfine fibers, in particular to a PET / PVA sea-island fiber with a water-soluble sea phase and a production process thereof. Background technique [0002] Microfiber has attracted people's attention for its high coverage, soft touch, comfortable wearing, soft luster, and good adsorption properties. It is widely used in clothing, artificial leather, building materials, adsorption and filter materials, and other fields. Sea-island fiber is the abbreviation of sea-island composite fiber. It adopts composite spinning technology to use two fiber-forming polymers as "island" and "sea" components, and melt-spins them according to different ratios. The different solubility of the components to a certain chemical solvent, the "sea" component is dissolved and the "island" component is left, that is, the composite ultrafine fiber. According to the type of marine polymer and post-processing technology, sea-islan...

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Problems solved by technology

[0005] In view of the deficiencies in the prior art, the technical problem to be solved by the present invention is to provide a method to solve the pollution problem caused by the traditional PVA slices using organic solvents to prepare composite fibers, to achieve the purpose of composite melt spinning with island phase resins, and to enhance Continuity of production, PET / PVA sea-island fiber with water-soluble sea phase and its production process reducing labor intensity