Processing method of easy-to-degrade non-woven fabric with antibacterial function

A processing method and non-woven technology, applied in non-woven fabrics, textiles and papermaking, conjugated rayon, etc., can solve problems such as air pollution, and achieve the effects of strengthening antibacterial properties, good air permeability, and long antibacterial aging.

Active Publication Date: 2018-07-17
界首市圣通无纺布有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And because polypropylene non-woven fabrics are difficult to be biodegraded, incineration treatment is often used, and incineration treatment will cause serious air pollution

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

[0029] (1) Synthesis of carboxyl-terminated polylactic acid: 35g lactic acid is added with water to make lactic acid aqueous solution, and the water pump is decompressed and heated to 160°C for heat preservation and stirring, and the water that is steamed is collected, then 5g adipic acid and 0.1g stannous octoate are added, and the Stir the reaction under reduced pressure with a water pump. After the reaction, the resulting mixture is dissolved in chloroform, precipitated with absolute ethanol, filtered with suction, and then transferred to a vacuum drying oven at 50°C to dry to constant weight to obtain carboxyl-terminated polylactic acid;

[0030] (2) Antibacterial modification of carboxyl-terminated polylactic acid: dissolve 5g of chitosan hydrochloride in water, then add 40g of the prepared carboxyl-terminated polylactic acid, stir fully, and add dilute sulfuric acid dropwise to adjust the pH value to 5, then heat to Heat and stir the reaction in the reflux state. After th...

Embodiment 2

[0035] (1) Synthesis of carboxyl-terminated polylactic acid: 50g lactic acid is added with water to make lactic acid aqueous solution, and the water pump is depressurized and heated to 160°C for heat preservation and stirring, and the water evaporated is collected, then 8g adipic acid and 0.1g stannous octoate are added, and the Stir the reaction under reduced pressure with a water pump. After the reaction, the resulting mixture is dissolved in chloroform, precipitated with absolute ethanol, filtered with suction, and then transferred to a vacuum drying oven at 50°C to dry to constant weight to obtain carboxyl-terminated polylactic acid;

[0036] (2) Antibacterial modification of carboxyl-terminated polylactic acid: dissolve 8g of chitosan hydrochloride in water, then add 50g of the prepared carboxyl-terminated polylactic acid, stir fully, and drop dilute sulfuric acid to adjust the pH value to 5, then heat to Heat and stir the reaction in the reflux state. After the reaction, ...

Embodiment 3

[0041] (1) Synthesis of carboxyl-terminated polylactic acid: 50g lactic acid is added with water to make lactic acid aqueous solution, and the water pump is depressurized and heated to 160°C for heat preservation and stirring, and the water evaporated is collected, then 8g adipic acid and 0.1g stannous octoate are added, and the Stir the reaction under reduced pressure with a water pump. After the reaction, the resulting mixture is dissolved in chloroform, precipitated with absolute ethanol, filtered with suction, and then transferred to a vacuum drying oven at 50°C to dry to constant weight to obtain carboxyl-terminated polylactic acid;

[0042] (2) Antibacterial modification of carboxyl-terminated polylactic acid: dissolve 8g of chitosan hydrochloride in water, then add 50g of the prepared carboxyl-terminated polylactic acid, stir fully, and drop dilute sulfuric acid to adjust the pH value to 5, then heat to Heat and stir the reaction in the reflux state. After the reaction, ...

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Abstract

The invention discloses a processing method of an easy-to-degrade non-woven fabric with an antibacterial function, and relates to the technical field of non-woven fabric processing. The method includes the following operation steps of firstly, synthesizing carboxyl-terminated polylactic acid; secondly, conducting antibacterial modification on the carboxyl-terminated polylactic acid; thirdly, preparing materials; fourthly, processing a fiber net; fifthly, forming the non-woven fabric. The prepared non-woven fabric has remarkable antibacterial performance and meanwhile is stable in antibacterialperformance and long in antibacterial time; the prepared non-woven fabric is high in mechanical strength, high in breathability, free of toxin and harm to human bodies and particularly good in biodegradability, and therefore the pollution caused to the environment when the non-woven fabric is abandoned is reduced.

Description

Technical field: [0001] The invention relates to the technical field of non-woven fabric processing, in particular to a processing method for an easily degradable non-woven fabric with antibacterial function. Background technique: [0002] Non-woven fabric has the characteristics of moisture-proof, breathable, flexible, light weight, non-combustible, easy to decompose, non-toxic and non-irritating, rich in color, low in price, and recyclable. Polypropylene pellets are mostly used as raw materials, which are produced by continuous one-step process of high-temperature melting, spinning, laying, and hot-pressing coiling. [0003] However, due to the low cost and wide application of polypropylene non-woven fabrics, the recycling cost is relatively high, making it difficult to recycle. Therefore, people usually adopt a disposable treatment method for non-woven products. And because polypropylene non-woven fabrics are difficult to be biodegraded, incineration treatment is often ...

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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Patent Type & Authority Applications(China)
IPC IPC(8): D04H3/147D01F8/10D01F8/18D01F1/10
CPCD01F1/10D01F1/103D01F8/10D01F8/14D01F8/18D04H3/147
Inventor 关义臣关建李鹏卢辉辉刘晨阳
Owner 界首市圣通无纺布有限公司
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