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Metal adsorbent having nonwoven fabric form, and production method for same

A technology of adsorbent materials and non-woven fabrics, which is applied in textiles and papermaking, chemical instruments and methods, non-woven fabrics, etc., can solve the problems of metal adsorption reduction, fibrous adsorption amount reduction, and reduction of lint waste, etc., to achieve rich softness High performance, high adsorption capacity, and high chemical resistance

Inactive Publication Date: 2016-09-21
FILCON +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The generation of lint can be reduced by this method, but the leakage of lint cannot be completely suppressed
In addition, due to the mixing of hot-melt-bonded fibers, the amount of fibrous adsorbent per unit weight decreases, causing a decrease in the amount of metal adsorption

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
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  • Metal adsorbent having nonwoven fabric form, and production method for same
  • Metal adsorbent having nonwoven fabric form, and production method for same
  • Metal adsorbent having nonwoven fabric form, and production method for same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0079] (1) Kneading of polymers with glycidyl groups and polyethylene

[0080] 7.0 kg of low-density polyethylene (manufactured by Nippon Polyethylene Co., Ltd., LH902, flow initiation temperature: 107° C.) as a polyolefin-based fiber matrix polymer and an acrylic polymer having a glycidyl group (manufactured by NOF Corporation, Ma-puru-fu G-0150M, weight-average molecular weight: 8,000-10,000, epoxy value: 310g / equivalent) 3.0kg was put into a biaxial kneader (manufactured by Toshiba Machinery Co., Ltd., TEM26SS) by a conventional method, kneaded at 200°C, passed The pelletizer obtained polyethylene pellets in which 30% by mass of an acrylic polymer having a glycidyl group was mixed.

[0081] (2) Melt spinning

[0082] The pellets obtained in the above (1) were dried at 50°C for 24 hours, and used as a raw material, using a melt-blowing device, at a spinning temperature of 190°C, an air temperature of 200°C, an air velocity of 155 m / sec, and a nozzle aperture of 0.4 mm. Und...

Embodiment 2

[0086] In Embodiment 1 (1) and (2), instead of low-density polyethylene (polyolefin-based fiber base polymer), poly(ethylene-vinyl acetate) (manufactured by Mitsui-DuPont-Polychemical Co., Ltd., Evaflex EV420 , flow start temperature: 84° C.), except that, a poly(ethylene-vinyl acetate) nonwoven fabric with 30% by mass of acrylic polymer mixed was produced under the same conditions. That is, under the conditions of a spinning temperature of 190°C, an airflow temperature of 200°C, an airflow velocity of 155m / sec, and a nozzle aperture of 0.4mm, conventional melt-blown spinning is performed to obtain a mass per unit area of ​​65g / m 2 A poly(ethylene-vinyl acetate) nonwoven fabric of 30% by mass of an acrylic polymer having a glycidyl group was mixed. The obtained electron micrograph of the poly(ethylene-vinyl acetate) nonwoven fabric mixed with acrylic polymer 30% by mass of glycidyl group is as follows: figure 2 shown. In the poly(ethylene-vinyl acetate) non-woven fabric tha...

Embodiment 3

[0088] By the same method as in Example 2, the influence of the mixing ratio of the polymer having a glycidyl group was investigated. The polyolefin-based fiber matrix polymer was set to poly(ethylene-vinyl acetate) in the same manner as in Example 2, and a copolymer of glycidyl methacrylate and styrene was used as a polymer having a glycidyl group (NOF Co., Ltd. Manufactured by map ruf G-0250S, weight average molecular weight: 20,000, epoxy value: 310 g / equivalent). The spinning conditions were the same as in Example 2. The mixing ratio of the polymer having a glycidyl group was set at 30% by mass, 40% by mass, 50% by mass, and 60% by mass. In the poly(ethylene-vinyl acetate) non-woven fabric that mixed the copolymer of glycidyl methacrylate and styrene of making, adopt the method identical with embodiment 1 (3), introduce tetraethylenepentamine (and light Junyaku Kogyo Co., Ltd.) to prepare a non-woven metal adsorption material. The results are shown in image 3 . As ca...

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Abstract

Provided are a metal adsorbent having a nonwoven fabric form, for use in adsorption and recovery of metals in solution, wherein the metal adsorbent having a nonwoven fabric form is produced by passing through: a) a step for preparing a polymer having glycidyl groups in the molecules thereof; b) a step for kneading the polymer having glycidyl groups, and a polyolefin fiber matrix polymer having a flow initiation temperature of 200 DEG C or below; c) a step for forming a nonwoven fabric by a melt blowing process or spunbonding process; and d) a step for reacting long-chain metalloligands having amino groups or imino groups, with the glycidyl groups on the nonwoven fabric fiber surfaces, or with halohydrin groups formed by reacting a hydrogen halide with these the glycidyl groups, to introduce metal-adsorbing functional groups. The metal adsorbent has high adsorbent capacity and high chemical resistance, can be endowed with a variety of metal-adsorbing properties, and can be readily processed into various forms. Also provided is a production method for the metal adsorbent.

Description

technical field [0001] The present invention is suitable for adsorption and recovery of metals in a wide range of solutions such as factory drainage, water, environmental water, and manufacturing process water. It has high adsorption capacity, high chemical resistance, easy diversification, and can be processed into various forms. Non-woven fabric-like metal adsorbent material and manufacturing method thereof. Background technique [0002] It has long been called for the construction of a recycling society. The separate collection and recycling of aluminum cylinders or steel cans, PET and other plastics, secondary batteries, paper, bottles, etc. is an immediate problem, and the recycling rate is also increasing year by year. On the other hand, represented by rare earth elements, indium, niobium, manganese and other rare metals, metal elements including platinum group, copper, zinc, aluminum, etc. are called "key metals". It is an extremely important key material. Among th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/30B01J45/00B01J47/12C08L23/02C08L29/04D04H1/4291D04H3/007D04H3/16D06M13/467D06M13/48
CPCB01J20/261B01J20/28023B01J20/321B01J20/3217B01J20/327B01J20/3272B01J20/3278B01J45/00B01J47/12C02F1/285C02F2101/20D01D5/0985D01F6/46D04H3/007D04H3/16D06M13/332D06M15/3562D06M15/61D06M2101/20D06M2400/01
Inventor 井上嘉则梶原健宽齐藤雅春藤井隆幸
Owner FILCON