Preparation method for ultrasound-assisted fiber surface expanding of nonwoven cloth and loading with nano zinc oxide

A nano-zinc oxide, non-woven fabric technology, applied in fiber treatment, light-resistant fibers, textiles and papermaking, etc., can solve problems such as environmental pollution, violation of purified water quality, etc., and achieve low cost, easy control, and simple and easy-to-operate preparation process. Effect

Inactive Publication Date: 2016-03-30
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, some chemical additives need to be added in the post-treatment process, which will pollute the environment and violate the original intention of purifying water quality.

Method used

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  • Preparation method for ultrasound-assisted fiber surface expanding of nonwoven cloth and loading with nano zinc oxide
  • Preparation method for ultrasound-assisted fiber surface expanding of nonwoven cloth and loading with nano zinc oxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029]The CNC suspension with a solid content of 20g / L and the zinc chloride solution with a concentration of 0.2mol / L are uniformly mixed at a volume ratio of 33:100, and introduced into a 200W ultrasonic generator. Put 0.2g of PP non-woven fabric into the above mixed solution, heat and ultrasonic at 90°C for 1 hour, and obtain a non-woven fabric with puffed fiber surface. After the reaction, take out the nonwoven fabric; and soak it in NaOH solution (0.5mol / L) for 0.6h, take it out and dry it at 60°C for 5h. Put the dried PP non-woven fabric into the zinc-ammonia solution with a pH of 10.6 and soak it alternately in hot and cold for 40 cycles (the total time is 1h), and then dry it at 100°C for 1h after taking it out, and then obtain the PP non-woven fabric uniformly loaded with nano-zinc oxide on the surface. Woven cloth. The weight of PP nonwovens increased by 36.6% after treatment, and the degradation rate of photocatalytic degradation dyes reached 94.8%. Scanning elect...

Embodiment 2

[0031] The CNC suspension with a solid content of 40g / L and the zinc chloride solution with a concentration of 0.5mol / L are uniformly mixed at a volume ratio of 4:100, and introduced into a 1000W ultrasonic generator. Put 0.5g of PET non-woven fabric into the above mixed solution, heat and ultrasonic at 95°C for 1 hour, and obtain a non-woven fabric with puffed fiber surface. After the reaction is over, take out the nonwoven fabric; soak it in KOH solution (0.2mol / L) for 0.5h, take it out and dry it at 115°C for 1h. Put the dried PET non-woven fabric into the zinc ammonia solution with pH 11.3 and alternately dip it in hot and cold for 10 cycles (the total time is 0.6h), and then dry it at 105°C for 1.5h after taking it out, and then the surface can be uniformly loaded with nano-zinc oxide. PET nonwoven fabric. The weight of PET nonwoven fabric increased by 28.2% after treatment, and the degradation rate of photocatalytic degradation dye reached 90.2%. The diameter of the na...

Embodiment 3

[0033] The CNC suspension with a solid content of 50g / L and the zinc nitrate solution with a concentration of 0.5mol / L were uniformly mixed at a volume ratio of 23:100, and introduced into a 2000W ultrasonic generator. Put 1 g of PP nonwoven fabric into the above mixed solution, heat and ultrasonically heat at 92° C. for 1 hour, and obtain a nonwoven fabric with puffed fiber surface. After the reaction is over, take out the nonwoven fabric; and put it in Ca(OH) 2 Soak in the solution (0.1mol / L) for 0.5h, take it out and dry it at 85°C for 4h. Put the dried PP non-woven fabric into the zinc-ammonia solution with a pH of 10.2 and soak it alternately in hot and cold for 50 cycles (the total time is 2 hours). After taking it out, dry it at 110°C for 1 hour to obtain a PP non-woven fabric uniformly loaded with nano-zinc oxide on the surface. Woven cloth. The weight of PP nonwoven fabric increased by 37.5% after treatment, and the degradation rate of photocatalytic degradation dye...

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Abstract

The invention relates to a method for ultrasound-assisted fiber surface expanding of nonwoven cloth and loading with nano zinc oxide. The method includes the steps: 1) mixing evenly a cellulose nanocrystal suspension and a zinc salt solution, putting the mixed solution into an ultrasonic generator, and heating in water bath; 2) putting the nonwoven cloth into the mixed solution, carrying out ultrasonic heating for 0.1-3 h at the temperature of 40-100 DEG C, after the reaction is finished, taking out the nonwoven cloth, putting the nonwoven cloth into an alkali liquid, impregnating, then taking out the nonwoven cloth, and drying; and 3) adding ammonia water into a zinc salt solution until the pH of the solution is 10-12, to obtain a zinc ammonia solution; and putting the dried nonwoven cloth into the zinc ammonia solution, carrying out hot and cold alternating impregnation for 1-100 cycles, taking out the nonwoven cloth, and drying to obtain the product. Nano zinc oxide with different topological structures are evenly loaded on the surface of the nonwoven fabric fibers, easy agglomeration, difficult recovery and difficult preparation of pure nano zinc oxide particles are effectively avoided, the whole preparation process has no pollution to the environment, and the method is suitable for industrial scale production.

Description

technical field [0001] The invention belongs to the field of modification of non-woven fabrics, and in particular relates to a preparation method of fiber surface swelling loaded nanometer zinc oxide. Background technique [0002] With the continuous advancement of science and technology, the rapid development of social economy and the improvement of people's living standards, but the excessive expansion of the population and the blind exploitation of natural resources by humans have also led to serious environmental pollution, including the phenomenon of random discharge of industrial wastewater and dye wastewater The impact on water pollution is increasing (Sun Fazhe. Controllable preparation and photocatalytic performance of nano-ZnO and composites [D]. Huazhong University of Science and Technology, 2013). Therefore, effective governance and control of water pollution is particularly important in environmental governance. At present, the main treatment methods include th...

Claims

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Application Information

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IPC IPC(8): D06M10/06D06M10/10
CPCD06M10/06D06M10/10D06M16/00D06M2200/25
Inventor 余厚咏王闯禹立周雨薇
Owner ZHEJIANG SCI-TECH UNIV
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