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Preparation method of silk fibre with function of removing formaldehyde

A silk fiber and functional technology, applied in the field of silk fiber preparation, achieves the effects of good safety, good ecological environment compatibility, and broad market prospects

Inactive Publication Date: 2010-02-17
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] At present, formaldehyde removal products mainly use porous substances or chemical reagents to remove formaldehyde, and the active ingredient proanthocyanidin (OPC) in grape seeds, grape skins, and larch is used to develop silk fibers with formaldehyde removal functions. The method has not been seen at home and abroad. has been reported

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] In this embodiment, the preparation of silk fiber with formaldehyde removal function mainly includes the following steps:

[0019] (1) Dissolve 8 grams of proanthocyanidins (purity 85%) in 500 milliliters of water; then add 0.1 milliliters of glacial acetic acid to the above solution and stir evenly; then add 8 grams of ferrous sulfate and stir to dissolve it; then use bicarbonate Sodium solution adjusts the pH value of the above mixed solution to 5; then the temperature of the mixed solution is raised to 50°C, and the mixed solution is diluted after being kept warm for 20 minutes, so that the total volume of the mixed solution is 2 liters;

[0020] (2) in the mixed solution that step (1) obtains, add 1.0 gram Pingpingjiao and 4 gram salts and stir;

[0021] (3) Add 100 grams of silk fiber into the mixed solution obtained in step (2), and treat it for 1 hour at a temperature of 90° C. and a bath ratio of 1:20; then wash and dry the silk fiber to obtain Silk fiber with ...

Embodiment 2

[0023] (1) Dissolve 10 grams of proanthocyanidins (purity 85%) in 500 milliliters of water; then add 0.15 milliliters of glacial acetic acid and stir evenly; then add 5 grams of ferrous sulfate and stir to dissolve it; then use sodium bicarbonate solution to dissolve the above The pH value of the mixed solution was adjusted to 6; then the temperature of the mixed solution was raised to 60° C., and the mixed solution was diluted to a total volume of 3 liters after being kept warm for 30 minutes;

[0024] (2) add 1.5 gram Pingpingjiao and 18 gram salt in the mixed solution that step (1) obtains, stir;

[0025] (3) Add 100 grams of silk fiber into the mixed solution obtained in step (2), and treat it for 3 hours at a temperature of 60° C. and a bath ratio of 1:30; then wash and dry the silk fiber to obtain Silk fiber with formaldehyde function. After testing, the removal rate of the silk fiber to formaldehyde in indoor air is 75.4%.

Embodiment 3

[0027] (1) Dissolve 12 grams of proanthocyanidins (purity 85%) in 500 milliliters of water; then add 0.25 milliliters of glacial acetic acid and stir evenly; then add 4 grams of ferrous sulfate and stir to dissolve it; mix the above with sodium bicarbonate solution The pH value of the solution was adjusted to 8; then the temperature of the mixed solution was raised to 55° C., and the mixed solution was diluted to 4 liters after 40 minutes of heat preservation;

[0028] (2) in the mixed solution that step (1) obtains, add 2 gram flat plus O and 40 gram salts, stir;

[0029] (3) Add 100 grams of silk fiber into the mixed solution obtained in step (2), and treat it for 12 hours at a temperature of 25° C. and a bath ratio of 1:40; then wash and dry the silk fiber to obtain Silk fiber with formaldehyde function. After testing, the removal rate of the silk fiber to formaldehyde in indoor air is 77.6%.

[0030] According to the specifications and quality requirements, the silk fibe...

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Abstract

The invention discloses a preparation method of silk fibre with a function of removing formaldehyde, mainly comprising the following steps: (1) dissolving procyanidin with the weight equivalent to 8-12 percent of the silk fibre into water, adding 0.2-0.5 milliliters of glacial acetic acid per each litre of water into the solution and uniformly stirring, adding ferrous sulphate into the solution according to the mass ratio of the ferrous sulphate to the procyanidin of 1 to 1-3 and stirring, adding a sodium bicarbonate solution into the solution to regulate the pH value of the mixing solution to 5-8, increasing the temperature of the mixing solution to 50-60 DEG C, and preserving the heat of the mixing solution for 20-40 minutes; (2) adding 0.5 gram of peregal O and 2-10 grams of salt intoeach litre of the obtained mixing solution and uniformly stirring; (3) adding the silk fibre into the obtained mixing solution and processing for 1-12 hours under the conditions that temperature is 25-90 DEG C and liquor ratio is 1 to 20-40, and then taking the silk fibre out and washing and drying the silk fibre. The obtained silk fibre can enable the removal rate of the formaldehyde contained inindoor air to achieve more than 75 percent.

Description

technical field [0001] The invention relates to the field of preparation of functional textile fibers, in particular to a method for preparing silk fibers with the function of removing formaldehyde. Background technique [0002] Humans spend about 90% of their time indoors, and the quality of indoor air directly affects people's health. In recent years, with the rapid development of my country's economy and the continuous improvement of people's living standards, more and more families have begun to pay attention to the decoration of their living rooms. Due to the existence of low-quality materials in the market, when people beautify their homes, they also bring toxic substances that pollute the air into their homes. A large number of building materials and decoration materials containing formaldehyde have entered the room. The volatilization of formaldehyde seriously pollutes the indoor air and induces various diseases. [0003] Formaldehyde is the most important one amo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M13/152D06M11/56D06M101/10
Inventor 余志成颜超杨兴
Owner ZHEJIANG SCI-TECH UNIV
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