Low voc type regenerated polyester fiber and preparation method thereof

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...

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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

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