Subacidity cation exchange fiber and method for preparing fabric thereof
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A technology of cation exchange and fiber fabric, applied in the field of preparation of functional fiber materials, can solve the problems of large consumption of raw materials, complex process and high production cost, and achieve the effects of shortened reaction time, simple process and low cost
Inactive Publication Date: 2008-05-14
HIGH & NEW TECH RES CENT OF HENAN ACAD OF SCI
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[0005] The purpose of the present invention is to overcome the problems of complex process, large consumption of raw materials, high production cost and the like in the current method for preparing ion exchange fibers, and to provide a weakly acidic cation exchange fiber and its fabric with simple process and low production cost. Preparation
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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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Embodiment 1
[0026] Embodiment 1: add 1% sodium hydroxide solution 100kg, acrylic fiber 3kg in reactor, with reactor airtight, heat while stirring, make reaction be that 140 ℃ of temperature, pressure are under the condition of 0.4MPa reaction 1 Hours, then lower the temperature, discharge, wash and dry to obtain sodium-type ion-exchange fibers.
[0027] Add 100kg of 5% hydrochloric acid and the above-mentioned sodium-type ion-exchange fibers into an open container, transform for 6 hours, and then wash and dry to obtain hydrogen-type ion-exchange fibers.
Embodiment 2
[0028] Example 2: Add 100 kg of 3% sodium hydroxide solution and 3 kg of acrylic fiber fibers to the reactor, close the reactor, stir and heat, react for 3 hours at 120 ° C and 0.2 MPa, cool down and discharge, wash and dry, Get sodium ion exchange fiber.
[0029] Add 100 kg of 5% nitric acid solution and the above-mentioned sodium-type ion-exchange fibers to an open container, transform for 10 hours, wash and dry to obtain hydrogen-type ion-exchange fibers.
Embodiment 3
[0030] Example 3: 100 kg of 10% sodium hydroxide solution and 3 kg of acrylic fiber fibers were added to the reaction kettle, and the closed reaction kettle was stirred and heated, and reacted for 4 hours at 110 ° C and 0.1 MPa, cooled and discharged, washed and dried to obtain sodium type ion exchange fibers.
[0031] Add 100 kg of 5% sulfuric acid solution and the above-mentioned sodium-type ion-exchange fibers into an open container, transform for 5 hours, wash and dry to obtain hydrogen-type ion-exchange fibers.
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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Abstract
The invention discloses a preparation method for a plurality of weak-acid cation-exchange fibers and fabrics, which is characterized in that a plurality of AN-VDC copolymer fibers hydrolyze in an alkalinity or acidity solution in a hermetic reactor or under an atmospheric pressure condition with a pressure of 0.0 to 0.4MP; the concentration of the alkaline solution in alkalinity hydrolysis is 1 to 40% and the temperature of the reaction is 80 to 140 DEG C; the concentration of the acidity solution in acidity hydrolysis is 5 to 50%; the temperature of the reaction is 80 to 140 DEG C, and the time for the both hydrolysis processes is 1 to 10 hours. The invention has the advantages of simple technology, small amount of material consumption and low cost, the 20% lower comprehensive production cost to the prior art, good mechanical property and fiber molding performance of cation-exchange fibers, strong harmful gas-absorb ability and regeneration ability of cation-exchange fibers, remarkable economic and social benefits and worthy popularization.
Description
1. Technical field: [0001] The invention relates to a preparation method of a functional fiber material, in particular to a preparation method of an ion exchange fiber and its fabric. 2. Background technology: [0002] Ion exchange fiber is a new type of adsorption and separation functional fiber material. Its industrial preparation and application in different fields is one of the rapidly developing high-tech nowadays. Compared with granular ion exchangers, ion exchange fiber materials have the following characteristics: (1) large effective specific surface area; (2) fast exchange speed; It can be used in the form of fabric; (4) It can absorb and filter out various polar gases such as acid and alkali under daily environmental conditions; (5) It can be applied to the enrichment and filtration of precious and heavy metal ions in electroplating and metallurgical wastewater. [0003] At present, Japan, the former Soviet Union and other countries have developed a variety of new...
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
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Patent Type & Authority Applications(China)
IPC IPC(8): B01J39/18B01J47/12B01J39/19B01J47/127
Inventor 梁志宏梁雅辉
Owner HIGH & NEW TECH RES CENT OF HENAN ACAD OF SCI
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