Polyurethane elastic fiber with lasting fragrance and preparation method thereof

A polyurethane elastic and elastic fiber technology, which is applied in the field of polyurethane elastic fiber material manufacturing, can solve problems such as easy volatilization, achieve long-lasting fragrance effect, reduce the possibility of volatilization, and improve the effect of covering rate

Active Publication Date: 2018-02-16
ZHEJIANG HUAFENG SPANDEX
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The present invention adopts mesoporous material to carry out initial adsorption to water-soluble liquid essence, effectively improves the covering rate of essence, and uses polyimide as the capsule wall of microcapsule, solves the problem of general fragrance or common fragrance microcapsule in spandex spinning Due to the problem of volatilization under high temperature conditions in the silk tunnel, the prepared polyurethane elastic fiber has a strong aroma effect, and the aroma release time is longer and more uniform

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Step 1: Mix 60g of mesoporous titanium dioxide with a particle size of 0.5-5μm and 50ml of rose essence evenly, so that the rose essence is absorbed in the mesoporous titanium dioxide, and then add it to 1000ml of dichloromethane solution containing 4g of pyromellitic acid chloride In, after stirring uniformly, an organic phase solution is obtained;

[0024] Step 2: Dissolve 9g of m-phenylenediamine in 2000ml of deionized water, add 0.5g of sodium lauryl sulfate and 0.5g of Tween-80, and stir evenly with a homogenizer. The speed of the homogenizer is 8000rpm / min, and the organic phase solution of step 1) is added to it. After reacting for 30 minutes, adjust the speed of the homogenizer to 500rpm / min, and add KOH at the same time to adjust the pH to 7.0. After stirring for 120 minutes, filter and select the particle size Aromatic microcapsules with a size of 1-10 μm are washed with deionized water and dried at 60°C to obtain rose-scented microcapsules with polyimide wall...

Embodiment 2

[0028] Step 1: Mix 150g of mesoporous silica with a particle size of 0.5-5μm and 120ml of lavender essence evenly, so that the lavender essence is absorbed in the mesoporous silica, and then add it to 1500ml of di In the solution of methyl chloride, after stirring uniformly, an organic phase solution is obtained;

[0029] Step 2: Dissolve 15g of p-phenylenediamine in 3000ml of deionized water, add 1.0g of sodium dodecylsulfonate and 0.5g of Span-80, stir evenly with a homogenizer, and adjust Homogenizer speed to 10000rpm / min, the organic phase solution of step 1) is added wherein, after reacting for 25min, adjust homogenizer speed to 700rpm / min, add NaOH, NaOH 2 CO 3 Adjust the pH to 7.5, stir for 90 minutes, filter, select aromatic microcapsules with a particle size of 1-10 μm, wash with deionized water, and dry at 80°C to obtain lavender-scented microcapsules with polyimide walls. capsule;

[0030]Step 3: Add 9.00kg of polytetramethyl ether glycol, 2.25kg of 4,4-diphenylm...

Embodiment 3

[0033] Step 1: Mix 250g of mesoporous silica with a particle size of 0.5-5μm and 250ml of jasmine essence evenly, so that the jasmine essence is absorbed in the mesoporous silica, and then add it to 3000ml containing 10g of pyromellitic acid chloride In the solution of dichloromethane, obtain organic phase solution after stirring;

[0034] Step 2: Dissolve 15g of m-phenylenediamine and 8g of hexamethylenediamine in 5000ml of deionized water, add 1.0g of sodium dodecylbenzenesulfonate, 1.0g of Tween-80, and 0.5g of OP-10. Stir the homogenizer evenly, and at a constant temperature of 24°C, adjust the speed of the homogenizer to 13000rpm / min, add the organic phase solution in step 1) to it, and react for 15 minutes, adjust the speed of the homogenizer to 800rpm / min, and add acid to accept Adjust the pH to 7.8 with NaOH, stir for 60 minutes, filter, select aromatic microcapsules with a particle size of 1-10 μm, wash with deionized water, and dry at 90°C to obtain jasmine with poly...

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Abstract

The invention relates to a preparation method of a polyurethane elastic fiber with lasting fragrance. The preparation method comprises the following steps: taking a mixture of a mesoporous material and a water-soluble essence as a capsule core of a microcapsule, and carrying out interfacial polymerization on pyromellitic chloride and diamine to prepare an aromatic microcapsule with a capsule wallof polyimide; carrying out a reaction among polyether diol, diisocyanate and an amine chain extender in a polar solvent to obtain a polyurethane urea solution; adding the aromatic microcapsule and anauxiliary additive into the polyurethane urea solution to obtain a polyurethane urea spinning solution; preparing the polyurethane elastic fiber with lasting fragrance through curing, filtering and adry spinning technology.

Description

technical field [0001] The invention belongs to the technical field of polyurethane elastic fiber material production. Specifically, the polyurethane elastic fiber prepared by the present invention has the performance of lasting fragrance. Background technique [0002] Polyurethane elastic fiber (also known as "spandex") has high elongation (500% to 700%), low elastic modulus (200% elongation, 0.04 to 0.12 g / denier) and high elastic recovery (200% elongation , 95% to 99%). Its physical and mechanical properties are very similar to natural latex silk, but its strength is 2 to 3 times that of latex silk. It is more resistant to chemical degradation than latex silk, and its linear density is also finer. It can be mixed with non-elastic fibers to greatly improve the wearing of fabrics. Therefore, it is widely used in elastic fabrics such as jeans, swimwear, yoga clothes, underwear, women's bras, socks, etc. With the continuous improvement of people's living standards, the req...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/94D01F1/10C08G18/76C08G18/66C08G18/48C08G18/32C08G18/10B01J13/14
CPCB01J13/14C08G18/10C08G18/4825C08G18/7671D01F1/10D01F6/94C08G18/3228
Inventor 杨晓印邵晓林赵婧赵晓阳陈厚翔池晓智陈铃薛士壮
Owner ZHEJIANG HUAFENG SPANDEX
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