Method for preparing chelating fiber material capable of adsorbing heavy metals in water

A technology for chelating fibers and heavy metals, which is applied in the fields of adsorption water/sewage treatment, fiber treatment, chemical instruments and methods, etc., can solve the problems of poor mechanical properties of PP chelated fibers, high process energy consumption, and high reaction temperature. The chelation capacity is controllable, the process is simple, and the process is mild.

Inactive Publication Date: 2015-06-03
NANJING UNIV OF TECH
View PDF4 Cites 23 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But, solution grafting method reaction time is long, needs the amount of organic solvent very big, and the process energy consumption height of reclaiming environment harmful organic solvent is high, cost is big; The grafting rate of melting grafting method is low, and reaction temperature is high (PP fusing point The above implementation), it is easy to degrade or crosslink PP, which will make the mechanical properties of PP chelating fibers worse, and the unreacted graft monomers and homopolymers thereof remaining in PP chelating fibers are difficult to remove after the reaction ends ,...

Method used

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for preparing chelating fiber material capable of adsorbing heavy metals in water
  • Method for preparing chelating fiber material capable of adsorbing heavy metals in water
  • Method for preparing chelating fiber material capable of adsorbing heavy metals in water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] (1) Soak and wash the PP fiber material with acetone for 10 hours, centrifugally spin dry, and dry to obtain the pretreated PP fiber material, which is put into a plasma reactor (see figure 1 )middle. Vacuumize the plasma reactor, then feed argon into the reactor and then evacuate to vacuum, and replace the air in the reactor 5 times to ensure that the reactor is an argon atmosphere. After preheating the plasma generator device for 10 minutes, control the argon flow rate through the valve, turn on the radio frequency generator of the plasma generator device, set the plasma atmosphere pressure to 15Pa, discharge power to 15w, and discharge time to 3min to obtain Surface activated PP fibers.

[0040] (2) Pass the obtained surface-activated PP fiber into air through the vent tube, and leave it at room temperature for 1 hour to allow the peroxidation reaction to be sufficient to obtain PP fibers with peroxy groups on the surface.

[0041] (3) The PP fiber material that th...

Embodiment 2

[0046] (1) Soak and wash the PP fiber material with acetone for 10 hours, centrifugally spin dry, and dry to obtain the pretreated PP fiber material, which is put into a plasma reactor (see figure 1 .)middle. Vacuumize the plasma reactor, then feed argon into the reactor and then evacuate to vacuum, and replace the air in the reactor 5 times to ensure that the reactor is an argon atmosphere. After preheating the plasma generator device for 10 minutes, control the argon flow rate through the valve, turn on the radio frequency generator of the plasma generator device, set the plasma atmosphere pressure to 15Pa, discharge power to 20w, and discharge time to 3min to obtain Surface activated PP fibers.

[0047] (2) Pass the obtained surface-activated PP fiber into air through the vent tube, and leave it at room temperature for 1 hour to allow the peroxidation reaction to be sufficient to obtain PP fibers with peroxy groups on the surface.

[0048] (3) The PP fiber material that t...

Embodiment 3

[0053] (1) Soak and wash the PP fiber material with acetone for 10 hours, centrifugally spin dry, and dry to obtain the pretreated PP fiber material, which is put into a plasma reactor (see figure 1 .)middle. Vacuumize the plasma reactor, then feed argon into the reactor and then evacuate to vacuum, and replace the air in the reactor 5 times to ensure that the reactor is an argon atmosphere. After preheating the plasma generator device for 10 minutes, control the argon flow rate through the valve, turn on the radio frequency generator of the plasma generator device, set the plasma atmosphere pressure to 15Pa, discharge power to 20w, and discharge time to 3min to obtain Surface activated PP fibers.

[0054] (2) Pass the obtained surface-activated PP fiber into air through the vent tube, and leave it at room temperature for 1 hour to allow the peroxidation reaction to be sufficient to obtain PP fibers with peroxy groups on the surface.

[0055] (3) The PP fiber material that t...

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
Login to view more

PUM

PropertyMeasurementUnit
Saturated adsorption capacityaaaaaaaaaa
Saturated adsorption capacityaaaaaaaaaa
Saturated adsorption capacityaaaaaaaaaa
Login to view more

Abstract

The invention discloses a method for preparing a chelating fiber material capable of adsorbing heavy metals in water. According to the preparation process, only the surface layer of a finished fiber material is subjected to activating and grafting reaction in a low-temperature plasma field, the reaction is not carried out in the fiber material, and the treatment conditions are mild; and meanwhile, the fiber surface is multiple in active points, high in grafting rate and high in heavy metal chelating capacity, and the capacity is controllable. The method disclosed by the invention comprises the following steps: activating the melt-blown polypropylene fiber surface by using plasma, and generating lots of macromolecular radicals; allowing the macromolecular radicals to contact with air, so that the PP fiber surface is covered with organic peroxides or hydrogen peroxide; performing graft polymerization on the PP fiber surface by using a glycidyl methacrylate monomer; and finally, enabling an epoxy functional group on GMA to react with diethylenetriamine, thereby obtaining the chelating fiber material capable of adsorbing heavy metals in water.

Description

technical field [0001] The invention relates to a preparation method of a fiber material, in particular to a preparation method of a heavy metal chelated fiber material in adsorption water. Background technique [0002] Industries such as mining, ore dressing, battery, metallurgy, machinery, electroplating, and automobiles will produce a large amount of wastewater containing heavy metal ions. If they are not treated strictly, they will eventually pollute water bodies and soil. At present, the content of heavy metal ions in many water bodies and soils in our country seriously exceeds the standard, which is obviously closely related to the above pollution. Excessive heavy metal elements in soil and water, on the one hand, will have adverse effects on plant growth; on the other hand, heavy metals accumulated in plants will easily enter the human body through the food chain, endangering human health. Therefore, it is increasingly important to find a new type of adsorbent materi...

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
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): B01J20/26B01J20/30D06M14/10D06M13/332D06M10/06C02F1/28C02F1/62
Inventor 徐俊魏无际姚晓红李梦星张超郭牧林
Owner NANJING UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap