A kind of preparation method of multifunctional microfiber synthetic leather

A technology of superfine fiber and synthetic leather, which is applied in the direction of plant fiber, fiber treatment, fiber type, etc., and can solve the problems of high product price and high production cost

Active Publication Date: 2021-07-06
ZHEJIANG MEISHENG IND +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the superfine fiber synthetic leather prepared by this method meets the requirements of low VOC in the market, the production cost is high and the product price is relatively expensive, so it can only be used in the field of high-end products

Method used

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  • A kind of preparation method of multifunctional microfiber synthetic leather
  • A kind of preparation method of multifunctional microfiber synthetic leather
  • A kind of preparation method of multifunctional microfiber synthetic leather

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 1. Preparation of superfine fiber / nanocellulose base cloth:

[0030] Take 10g of PA6 / EHDPET sea-island fibers and immerse them in 200mL of deionized water, heat at 80°C for 4h, then take out the PA6 / EHDPET sea-island fibers to obtain PA6 microfibers with the "sea" phase removed;

[0031] Add 10g of PA6 microfibers with a mass fraction of 1wt% to 100g of nanocellulose aqueous solution, wherein the mass fraction of cellulose in the nanocellulose solution is 1wt%, and at the same time add KH550 with a mass fraction of 2wt%, and stir for 2 hours at room temperature , the superfine fiber / nanocellulose mixed solution was frozen at -80°C for 1 hour and then transferred to a freeze dryer. fabric;

[0032] Take 10g of the prepared microfiber / nanocellulose base cloth, immerse it in 100g of DMF solution with 5% mass fraction PEG1000, then add 5g of 1-octyl isocyanate, stir for 4h and mix the microfiber / nanocellulose base cloth The cloth was vacuum dried for 8 hours, and finally ...

Embodiment 2

[0038] 1. Preparation of superfine fiber / nanocellulose base cloth:

[0039] Take 10g of PET / EHDPET sea-island fibers and immerse them in 200mL of deionized water, heat at 80°C for 6 hours, then take out the PET / EHDPET sea-island fibers to obtain PET microfibers with the "sea" phase removed;

[0040] Add 10g of 2wt% PET ultrafine fibers to 100g of nanocellulose aqueous solution, wherein the nanocellulose in the nanocellulose solution is 2wt%, and at the same time add KH560 with a mass fraction of 4wt%, and stir for 2 hours at room temperature Finally, the superfine fiber / nanocellulose mixed solution was frozen at -90°C for 1 hour and then transferred to a freeze dryer. plain cloth;

[0041] Take 10g of the prepared microfiber / nanocellulose base cloth, immerse in 100g of DMF solution with 5% mass fraction PEG2000, add 5g of hexyl isocyanate, stir for 4h and put the ultrafine fiber / nanocellulose base cloth After vacuum drying for 8 hours, the superfine fiber / nanocellulose base ...

Embodiment 3

[0047] 1. Preparation of superfine fiber / nanocellulose base cloth:

[0048] Take 10g of PA6 / EHDPET sea-island fibers and immerse them in 200mL of deionized water, heat at 80°C for 5h, then take out the PA6 / EHDPET sea-island fibers to obtain PA6 microfibers with the "sea" phase removed;

[0049] Add 10g of 1.5wt% PET microfibers into 100g of nanocellulose aqueous solution, wherein the nanocellulose in the nanocellulose solution is 1.5wt%, while adding 1.5wt% of A-151 , after stirring at room temperature for 2 hours, the superfine fiber / nanocellulose mixed solution was frozen at -80°C for 1 hour and then transferred to a freeze dryer. The freeze-drying temperature was -40°C and the freeze-drying time was 55 hours. Fine fiber / nanocellulose base cloth;

[0050] Take 10g of the prepared microfiber / nanocellulose base cloth, immerse it in 100g of DMF solution with 5% mass fraction PEG4000, then add 5g of isopropyl isocyanate, stir for 4h, and mix the microfiber / nanocellulose base cl...

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Abstract

The invention discloses a preparation method of multifunctional superfine fiber synthetic leather, which comprises the following steps: 1) Obtaining superfine fiber without "sea" phase; 2) Mixing it with nanocellulose aqueous solution and adding silane coupling agent , after stirring, the mixed solution of superfine fiber / nanocellulose was obtained; 3) the mixed solution of superfine fiber / nanocellulose was frozen and then transferred to a freeze dryer to obtain a superfine fiber / nanocellulose base cloth; 4) the superfine fiber / nanocellulose base cloth was obtained; Immerse the fine fiber / nanocellulose base cloth in N,N-dimethylformamide solution dissolved in polyethylene glycol, add isocyanate, stir and then dry in vacuum to obtain ultrafine fiber / nanofiber grafted with polyethylene glycol Plain base cloth; 5) The base cloth in step 4) is impregnated and dried to obtain superfine fiber synthetic leather with waterproof, breathable and temperature-regulating functions. The sea-island fiber selected by the invention is not opened by toluene, which reduces the use of toxic reagents, and the prepared synthetic leather has good air permeability, good waterproof performance, and has the function of temperature regulation.

Description

technical field [0001] The invention belongs to the field of preparation of superfine fiber synthetic leather, and in particular relates to a preparation method of multifunctional superfine fiber synthetic leather with functions of hydrophobicity, air permeability and temperature adjustment. Background technique [0002] Natural leather is rich in collagen, and there is a unique three-dimensional weaving structure inside the leather, which makes natural leather have good moisture permeability, air permeability and wear resistance during use, so it is loved by consumers. In recent years, with the continuous enhancement of people's awareness of environmental protection, a polyurethane synthetic leather based on microfiber nonwovens (abbreviated as microfiber synthetic leather) has received widespread attention in the industry, thereby replacing a large number of resources-deficient synthetic leather. Natural leather has broad application prospects in making bags, clothing, foo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06N3/00D06N3/14D06M15/564D06M15/53D06M13/395D06M101/06D06M101/32D06M101/34
CPCD06M13/395D06M15/53D06M15/564D06M2101/06D06M2101/32D06M2101/34D06M2200/12D06M2200/50D06N3/0004D06N3/0011D06N3/0034D06N3/0036D06N3/14D06N2209/06D06N2209/123D06N2209/142D06N2211/28
Inventor 隋晓锋钱国春王亚停李祥丁雷
Owner ZHEJIANG MEISHENG IND
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