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Non-woven fabric for water purification and preparation method thereof

A non-woven, water purification technology, applied in chemical instruments and methods, non-woven fabrics, textiles and papermaking, etc., can solve problems such as the inability to meet the high standard requirements of water purification, achieve good water purification effect, high filtration accuracy, Good hydrophilic effect

Active Publication Date: 2022-05-20
CHTC JIAHUA NONWOVEN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The material of the non-woven fabric in this patented technology is not specifically limited, and the non-woven fabrics currently on the market obviously cannot meet the high standard requirements of water purification

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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A kind of preparation method of the non-woven fabric that is used for water purification, concrete steps are as follows:

[0031] (1) Take chitosan as raw material earlier, obtain modified chitosan through lactose acylation modification, then under the effect of sodium polyphosphate, cross-linking reaction occurs, obtain modified chitosan microsphere, then 120g Polypropylene (melt index is 1100g / 10 minutes) and 0.6g modified chitosan microspheres are mixed and melted to obtain a melt, and then the melt is sent to a die head with a temperature of 185°C at a frequency of 25Hz, and then sprayed onto a net curtain. At the same time, hot air at 240°C is blown to make the melt stretch and break to form short fibers, and then the short fibers are cooled and solidified by cooling air, rolled by rollers, and non-woven fabrics are obtained;

[0032] (2) Add 30g of nano activated carbon into 80g of water again, ultrasonically oscillate evenly to make a suspension, then utilize the...

Embodiment 2

[0041] A kind of preparation method of the non-woven fabric that is used for water purification, concrete steps are as follows:

[0042] (1) take chitosan as raw material earlier, obtain modified chitosan through lactose acylation modification, then under the effect of sodium polyphosphate, cross-linking reaction occurs, obtain modified chitosan microsphere, then 130g Polypropylene (melt index is 1120g / 10 minutes) and 0.8g modified chitosan microspheres are mixed and melted to obtain a melt, and then the melt is sent to a die head with a temperature of 195°C at a frequency of 35Hz, and then sprayed onto a mesh curtain. At the same time, hot air at 250°C is blown to make the melt stretch and then break to form short fibers, and then the short fibers are cooled and solidified by cooling air, rolled by rollers, and non-woven fabrics are obtained;

[0043] (2) Add 40g of nano activated carbon into 90g of water again, ultrasonically oscillate evenly to make a suspension, then utili...

Embodiment 3

[0052] A kind of preparation method of the non-woven fabric that is used for water purification, concrete steps are as follows:

[0053] (1) Take chitosan as raw material earlier, obtain modified chitosan through lactose acylation modification, then under the effect of sodium polyphosphate, crosslinking reaction occurs, obtain modified chitosan microsphere, then 125g Polypropylene (melt index is 1110g / 10 minutes) and 0.7g modified chitosan microspheres are mixed and melted to obtain a melt, and then the melt is sent to a die head with a temperature of 190°C at a frequency of 30Hz, and then sprayed onto a net curtain. At the same time, hot air at 245°C is blown to stretch the melt and then break it to form short fibers, and then cool and solidify the short fibers through cooling air, and roll them together to obtain non-woven fabrics;

[0054] (2) Add 35g of nano activated carbon into 85g of water again, ultrasonically oscillate evenly to make a suspension, then utilize the sus...

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 provides a non-woven fabric for water purification and a preparation method thereof.The preparation method includes the steps that chitosan serves as a raw material and is modified through lactose acylation to obtain modified chitosan, then under the action of sodium polyphosphate, a cross-linking reaction is conducted to obtain modified chitosan microspheres, then polypropylene and the modified chitosan microspheres are mixed, and the non-woven fabric for water purification is obtained. Preparing a non-woven fabric gray fabric through a melt-blowing process; preparing a suspension from the nano activated carbon, and carrying out dipping treatment on the non-woven fabric grey cloth by utilizing the suspension under a continuous flow condition to obtain a pretreated non-woven fabric; and carrying out surface modification on the pretreated non-woven fabric by using acrylic acid to obtain the non-woven fabric. The non-woven fabric is good in hydrophilicity, high in water filtering precision and good in water purification effect.

Description

technical field [0001] The invention relates to the technical field of nonwoven fabric processing, in particular to a nonwoven fabric used for water purification and a preparation method thereof. Background technique [0002] Non-woven fabric is a new generation of environmentally friendly materials. It is composed of oriented or random fibers and has been widely used in many fields, such as air filtration, liquid filtration, etc. Therefore, it is a good choice to use non-woven fabrics for water purification. choose. [0003] At present, the common non-woven fabric is made of polypropylene as raw material, which is produced by continuous one-step process of high-temperature melting, spinning, laying, and hot-pressing coiling. However, the hydrophilicity of polypropylene is poor, and the use of polypropylene non-woven fabrics for water purification has a natural disadvantage. In addition, most non-woven fabrics for water purification mainly use their filtration characterist...

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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Application Information

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IPC IPC(8): C02F1/44C02F1/28D04H1/544D04H1/56
CPCC02F1/44C02F1/283D04H1/56D04H1/544Y02W10/10
Inventor 邓连华曹仁广张帅杰李晓军朱波涛张植民曾静雯
Owner CHTC JIAHUA NONWOVEN CO LTD
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