Low-content organic volatile low-melting-point polyester fiber and preparation method thereof

A technology of organic volatiles and low-melting polyester, which is applied in the field of polyester fibers, can solve problems such as side reactions, b value increase, and catalyst addition, and achieve the effects of weakening influence, increasing glass transition temperature, and avoiding adhesion
CN110952168AActive Publication Date: 2020-04-03扬州富威尔复合材料有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
扬州富威尔复合材料有限公司
Publication Date
2020-04-03

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Abstract

The invention relates to a low-content organic volatile low-melting-point polyester fiber and a preparation method thereof. The preparation method comprises the steps of taking terephthalic acid, phthalic acid, ethylene glycol, diethylene glycol, isophthalic acid sulfonate and 1, 4-butanediol as raw materials to prepare low-content organic volatile low-melting-point polyester, and then taking theprepared polyester as a sheath layer material and taking PET as a core layer material to prepare the low-content organic volatile low-melting-point polyester fiber through sheath-core composite spinning (a metal sand material in an assembly is Ni); and adding zinc oxide in an esterification reaction stage. The fiber has a sheath-core composite structure, and the sheath layer material is the low-content organic volatile low-melting-point polyester (a molecular chain is composed of a phthalic acid chain segment, an ethylene glycol chain segment, a diethylene glycol chain segment, an isophthalicacid sulfonate chain segment and a 1, 4-butanediol chain segment), and the core layer material is PET; and the total content of acetaldehyde and butenal in the fiber is less than 0.5 ppm. The method reduces the influence of organic volatile on fibers and avoids the problem of fiber adhesion.
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Description

technical field

[0001] The invention belongs to the technical field of polyester fibers, and relates to a polyester fiber with low content of organic volatiles and low melting point and a preparation method thereof. Background technique

[0002] Polyester fiber is durable, wrinkle-resistant and crisp, has good washability and wearability, and is widely used. It is one of the synthetic fibers with the largest demand and the fastest development speed. Low melting point polyester is a new type of modified polyester that lowers the melting point (melting point at 100-210°C) by adding a variety of modifying components during the polymerization of ordinary polyester to change the molecular structure of PET. Low-melting point polyester is widely used in the production of non-woven fabrics for clothing or electrical insulation non-woven fabrics. The fibers made from it are mixed in ordinary polyester fiber nets, and only need to be heated to its melting point to produce bonding. Aft...

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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