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Low voc type regenerated polyester fiber and preparation method thereof

A technology of recycled polyester and fiber, applied in the chemical characteristics of fibers, rayon manufacturing, fire-retardant and flame-retardant filament manufacturing, etc., can solve the problems of affecting product performance, poor dispersion, high energy consumption, etc. Good hue, low VOCs content, and the effect of accelerating the reaction rate

Active Publication Date: 2019-06-11
ELITE COLOR ENVIRONMENTAL RESOURCES SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although there are many traditional methods for removing VOCs, they all have many unavoidable shortcomings. For example, although physical adsorption is easy to add, the adsorption process is reversible, and VOCs will be released again under heating or light; although chemical adsorption is irreversible, it is easy to trigger Other side reactions affect the performance of polyester products, and the absorption efficiency of fast-release VOCs is low under high-temperature light; the drying method is simple and easy, but it consumes a lot of energy and affects the performance of the product, and it is impossible to control the product during use. The release of VOCs in the environment; photocatalyst catalysis (referred to as photocatalysis) is a more suitable method, and now photocatalyst catalysis is widely used in indoor wall coatings, which can play a role in purifying indoor air However, if it is directly applied to spinning, compared with the application in coatings, there are many problems to be solved in the application of photocatalyst enzyme catalysis in the field of spinning, such as poor dispersion of photocatalyst in fibers, In the absence of light, VOCs cannot be absorbed and the obtained products have low utilization rate of visible light and cannot efficiently remove VOCs in polyester. If these problems can be solved, photocatalyst catalysis will be an effective and promising method. Method for preparing textiles with low VOCs content

Method used

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  • Low voc type regenerated polyester fiber and preparation method thereof
  • Low voc type regenerated polyester fiber and preparation method thereof
  • Low voc type regenerated polyester fiber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] A method for preparing low-VOC type regenerated polyester fiber, the specific steps are as follows:

[0058] A. Preparation of VOCs-removing masterbatch:

[0059] (1) prepare amide aldehyde inhibitor modified activated carbon;

[0060] (1.1) Activation of activated carbon: mix the activated carbon raw material with KOH solution with a concentration of 0.3mol / L at a mass ratio of 2.2:1, and under the protection of nitrogen, raise the temperature to 820°C at a rate of 13K / min, and activate for 2.2h ;

[0061] (1.2) Post-treatment: crush the activated carbon and sieve it into 20 meshes, wash it with ultrapure water until the pH of its aqueous solution is stable, and dry it in vacuum at 112°C for 14 hours;

[0062] (1.3) Modification: Mix polycaprolactam, post-treated activated carbon, and ethanol at a mass ratio of 2:1:2, and ultrasonically treat for 4 hours to obtain amide-type aldehyde inhibitor-modified activated carbon, wherein the prepared amides The content of pol...

Embodiment 2

[0079] A method for preparing low-VOC type regenerated polyester fiber, the specific steps are as follows:

[0080] A. Preparation of VOCs-removing masterbatch:

[0081] (1) prepare amide aldehyde inhibitor modified activated carbon;

[0082] (1.1) Activation of activated carbon: mix the activated carbon raw material with the KOH solution with a concentration of 0.1mol / L at a mass ratio of 2.5:1, and under the protection of nitrogen, raise the temperature to 850°C at a rate of 18K / min, and activate for 2.6h ;

[0083] (1.2) Post-treatment: crush the activated carbon and sieve it into 24 meshes, wash it with ultrapure water until the pH of its aqueous solution is stable, and dry it in vacuum at 118°C for 18 hours;

[0084] (1.3) Modification: Mix anthranilamide, post-treated activated carbon, and ethanol in a mass ratio of 2:1.5:2, and ultrasonically treat for 5 hours to obtain amide-type aldehyde inhibitor-modified activated carbon, wherein the prepared amide The content of...

Embodiment 3

[0100] A method for preparing low-VOC type regenerated polyester fiber, the specific steps are as follows:

[0101] A. Preparation of VOCs-removing masterbatch:

[0102] (1) prepare amide aldehyde inhibitor modified activated carbon;

[0103] (1.1) Activation of activated carbon: mix the activated carbon raw material and KOH solution with a concentration of 0.5mol / L at a mass ratio of 2.8:1, and under the protection of nitrogen, raise the temperature to 870°C at a rate of 15K / min, and activate for 3h;

[0104] (1.2) Post-treatment: crush the activated carbon and sieve it into 25 meshes, wash it with ultrapure water until the pH of its aqueous solution is stable, and dry it in vacuum at 105°C for 20 hours;

[0105] (1.3) Modification: Mix stearylamide, post-treated activated carbon and ethanol in a mass ratio of 2:1.8:2, and ultrasonically treat for 4 hours to obtain amide-type aldehyde inhibitor-modified activated carbon, wherein the prepared amide-type aldehyde The content ...

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Abstract

The invention relates to a low VOC (Volatile Organic Compound) regenerated polyester fiber and a preparation method thereof. The preparation method comprises the following steps: melting and blendingregenerated polyester melt prepared by alcoholysis and polymerization of regenerated polyester raw materials with a masterbatch in which VOCs are removed, and then spinning to obtain the low VOC regenerated polyester fiber. The masterbatch in which the VOCs are removed is prepared from the following components in percentage by mass: 60 to 75 percent of polyester, 10 to 15 percent of aldehyde inhibitor modified activated carbon, 12 to 19 percent of rare earth element doped photocatalyst, 2 to 4 percent of heat stabilizer, 2 to 4 percent of ether-proof agent and 1 to 2 percent of zinc stearate.The final low VOC regenerated polyester fiber in the absence of light has the characteristics that the removal rate of aldehyde VOCs is greater than or equal to 80 percent and the removal rate of benzene VOCs is greater than or equal to 30 percent; under the existence of light, the removal rate of the aldehyde VOCs is greater than or equal to 85 percent and the removal rate of the benzene VOCs isgreater than or equal to 60 percent. The preparation method disclosed by the invention has the advantages of simple production process, low VOC content of a product and great application prospect.

Description

technical field [0001] The invention belongs to the field of regenerated polyester, and relates to a low-VOC regenerated polyester fiber and a preparation method thereof. Background technique [0002] Since polyester fiber came out, it has developed rapidly because of its excellent performance, and its output has become the crown of synthetic fiber in the world. Polyester fiber has a series of excellent properties such as high breaking strength, high elastic modulus, moderate resilience, excellent heat setting performance, good heat resistance, good light resistance, good acid and alkali resistance and good corrosion resistance. The fabric prepared by it has the advantages of good wrinkle resistance and stiffness, so polyester fiber is widely used in the fields of clothing and home textiles. [0003] Recycled polyester is processed from recycled polyester bottles, filament waste or waste cloth. It belongs to the recycling and reuse of polyester waste. With the increase of p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G63/183D01F8/14D01F1/10D01F1/07C08G63/86C08J11/04C08J11/24C08L67/00
CPCC08G63/183C08G63/866C08J11/04C08J11/24C08J2367/00D01F1/07D01F1/10D01F8/14Y02P20/143Y02W30/62
Inventor 戴泽新陈烨戴梦茜王华平柯福佑毛晓彬王朝生胡继月莫文品朱金亚
Owner ELITE COLOR ENVIRONMENTAL RESOURCES SCI & TECH CO LTD
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