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Comfort spandex fiber and preparation method thereof

A spandex fiber, comfortable technology, applied in the field of functional chemical fiber and its manufacturing, to achieve the effect of saving oil removal process, low modulus, and sufficient separation

Inactive Publication Date: 2015-09-23
ZHEJIANG HUAFENG SPANDEX
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are few patented technologies and documents on the production of comfortable spandex fiber. Therefore, it is necessary to develop a new technology for producing comfortable spandex fiber, and at the same time overcome the technical difficulties in the manufacturing process to meet the needs of the development of spandex fiber manufacturing technology and application fields.

Method used

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  • Comfort spandex fiber and preparation method thereof
  • Comfort spandex fiber and preparation method thereof
  • Comfort spandex fiber and preparation method thereof

Examples

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Embodiment 1

[0023] Step 1: Prepare mixed prepolymer solution

[0024] 1) Prepare a prepolymer solution containing polyether polyol structural units: prepolymerize at 90° C. for 90 minutes with the molar ratio of diisocyanate and polytetrahydrofuran diol at 1.7, and add N to the prepolymer after the prepolymerization is completed, N-dimethylacetamide solvent is made into the prepolymer solution that mass percent concentration is 50%;

[0025] 2) Prepare a prepolymer solution containing dihydroxysilicone oil structural units: prepolymerize at 95°C for 100 min with the molar ratio of diisocyanate to dihydroxysilicone oil at 1.7, and add N,N- The dimethylacetamide solvent is prepared into a prepolymer solution with a concentration of 50% by mass; wherein the relative molecular weight of the dihydroxy silicone oil is 2500.

[0026] 3) Prepare a mixed prepolymer solution: blend the prepolymer solution of step 1) and step 2) at 40° C. for 35 minutes to prepare a mixed prepolymer solution;

[0...

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Abstract

The invention relates to a comfort spandex fiber and a preparation method thereof. A formula of the comfort spandex fiber comprises the following raw materials in percentage by mass: 60.0% to 70.8% of polyurethane fiber-forming polymer including a polyether glycol structural unit, 28.0% to 38.0% of polyurethane fiber-forming polymer including a dihydroxyl silicone oil structural unit, and 1.2% to 2.0% of additive. The preparation method comprises the following steps of 1, preparing a prepolymer including the polyether glycol structural unit and a prepolymer including the dihydroxyl silicone oil structural unit respectively, carrying out chain extension, so as to prepare a fiber-forming high polymer, and mixing the fiber-forming high polymer with additive slurry; 2, afterwards, storing and curing an obtained mixture under ultrasound and agitation, so as to prepare a spinning stock solution; 3, finally, preparing the comfort spandex fiber through a dry spinning device and technique. The comfort spandex fiber provided by the invention has the characteristics of high resilience and low modulus, and meets the requirements of the field of the application of comfort spandexes; the constraint feeling to skin is lightened; a consumer is enabled to feel comfortable and free doubly; an oil agent is not needed to be used for a silk coil in a coiling process; a product is more clean; the subsequent use is more convenient.

Description

technical field [0001] The invention relates to a functional chemical fiber and its manufacturing method, in particular to a comfortable spandex fiber and its preparation method. Background technique [0002] Spandex is a polyurethane elastic fiber, which is one of the key factors to improve the quality of textiles. However, when ammonia-containing textiles are in close contact with the human body and have high requirements for fit, high-modulus elastic fibers will cause discomfort to the human body due to their oppressive properties, while low-modulus elastic fibers face the problem of low rebound. Problem, elastic fabrics tend to lose their elasticity. A kind of comfortable spandex fiber can not only improve the comfort and durability of the fabric, but more importantly, it does not use oils, is cleaner, can meet more stringent requirements for use, and at the same time reduces subsequent processes, and is more energy-saving and environmentally friendly. [0003] At pres...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F8/16D01F1/10C08G18/48C08G18/61
Inventor 王小华钱锦刘姗姗薛士壮张礼华梁红军晋中成
Owner ZHEJIANG HUAFENG SPANDEX
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