PET sheath-core fiber containing metal-modified cross-type esterified product and preparation method thereof

A technology of metal modification and sheath-core fiber, which is applied in fiber treatment, fiber chemical characteristics, rayon manufacturing, etc., can solve the problems of polymer molding processing difficulties, processing molding process difficulties, and increased use costs, etc., to achieve good promotion value , low cost, beneficial to the effect of product processing and molding

Active Publication Date: 2021-08-24
SHANGHAI DEFULUN CHEM FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the solubility of the existing functional cruciform esters in common spinning solvents or polymers is too high, resulting in low viscosity of the mixture after blending with polyester and other polymers, which brings difficulties to the molding process of polymers
In addition, its melting point is not high, generally at 60-70°C, which puts forward certain requirements for its storage and transportation, and increases the cost of use. There is a problem that the processing and molding process is difficult

Method used

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  • PET sheath-core fiber containing metal-modified cross-type esterified product and preparation method thereof
  • PET sheath-core fiber containing metal-modified cross-type esterified product and preparation method thereof
  • PET sheath-core fiber containing metal-modified cross-type esterified product and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] A kind of preparation method of the PET skin-core fiber containing metal modified cruciform ester compound, the steps are as follows:

[0061] (1) prepare cruciform ester compound;

[0062] (a) Dibasic acid A 2 Mix with pentaerythritol in a molar ratio of 4:1, carry out melt esterification reaction under nitrogen protection and mechanical stirring at a stirring speed of 300 rpm, collect the product, dissolve, filter and dry to obtain DAPER, wherein the temperature of the melt esterification reaction is 200°C, the reaction time is 3h, A 2 The structural formula is:

[0063]

[0064] (b) Dibasic carboxylic acid B 2 Mix with ethylene glycol in a molar ratio of 1:1, add 4-methylbenzenesulfonic acid, carry out a melt condensation reaction under nitrogen protection and mechanical stirring at a stirring speed of 500 rpm to obtain DADA, wherein B 2 The molar ratio to 4-methylbenzenesulfonic acid is 1:0.01, the temperature of the melt condensation reaction is 180°C, and t...

Embodiment 2

[0078] A kind of preparation method of the PET skin-core fiber containing metal modified cruciform ester compound, the steps are as follows:

[0079] (1) prepare cruciform ester compound;

[0080] (a) Dibasic acid A 2 It was mixed with pentaerythritol in a molar ratio of 4:1, and the molten esterification reaction was carried out under the condition of argon protection and mechanical stirring with a stirring speed of 350 rpm, the product was collected, and DAPER was obtained by dissolving, filtration and drying. The temperature is 185°C, the reaction time is 1h, A 2 The structural formula is:

[0081]

[0082] (b) Dibasic carboxylic acid B 2 Mix with propylene glycol in a molar ratio of 1:1, add 4-methylbenzenesulfonic acid, carry out a melt condensation reaction under nitrogen protection and mechanical stirring at a stirring speed of 300 rpm to obtain DADA, wherein B 2 The molar ratio to 4-methylbenzenesulfonic acid is 1:0.01, the temperature of the melt condensation r...

Embodiment 3

[0096] A kind of preparation method of the PET skin-core fiber containing metal modified cruciform ester compound, the steps are as follows:

[0097] (1) prepare cruciform ester compound;

[0098] (a) Dibasic acid A 2 Mix with pentaerythritol in a molar ratio of 4:1, carry out the melt esterification reaction under the condition of helium protection and mechanical stirring with a stirring speed of 400rpm, collect the product, dissolve, filter and dry to obtain DAPER, wherein the melt esterification reaction is obtained. The temperature is 180°C, the reaction time is 2h, A 2 The structural formula is:

[0099]

[0100] (b) Dibasic carboxylic acid B 2 Mix with 1,4-butanediol in a molar ratio of 1:1, add 4-methylbenzenesulfonic acid, and carry out a melt condensation reaction under argon protection and mechanical stirring with a stirring speed of 500 rpm to obtain DADA, wherein B 2The molar ratio to 4-methylbenzenesulfonic acid is 1:0.01, the temperature of the melt conde...

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Abstract

The invention relates to a PET sheath-core fiber containing a metal-modified cross-type ester compound and a preparation method thereof. The mixture of PET slices and flame-retardant and antibacterial masterbatches and recycled PET slices are used as the source of the skin layer material and the source of the core layer material. The PET sheath-core fiber containing metal-modified cross-shaped esterified compound is prepared by melting sheath-core composite spinning method, wherein the flame-retardant and antibacterial masterbatch includes a flame-retardant and antibacterial modifier, and the flame-retardant and antibacterial modifier is an insoluble and infusible metal modified fiber. Sexual cruciform esters, specifically, network polymers formed by insoluble and infusible cruciform esters cross-linked with metal ions, insoluble in organic solvent I below 80°C, non-melting in the range from room temperature to T, T≥380°C The structural formula of the cross-type ester compound is as follows: In the formula, the chain segment between the quaternary carbon C and the terminal carboxyl group on behalf of the cross-type ester compound molecular center contains a double bond with an oxygen atom. The preparation method of the invention is simple and easy, and the prepared sheath-core fiber has excellent flame-retardant and antibacterial properties.

Description

technical field [0001] The invention belongs to the technical field of functional chemical fibers, and relates to a PET sheath-core fiber containing a metal-modified cross-shaped ester compound and a preparation method thereof by slice spinning. Background technique [0002] Functional fibers, differential fibers and high-performance fibers are the main development directions of technological innovation in the traditional textile industry, which have contributed to the improvement of human living standards. Among them, functional fibers have the widest range of applications. [0003] Functional fiber refers to a new type of fiber that has some special function in addition to the physical and mechanical properties of ordinary fibers. In firefighting and factory and mine operations, high temperature poses a huge threat to firefighters and staff, and can easily cause fatal accidents. In daily life, fire accidents caused by burning textiles will also bring casualties and propert...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F8/14D01F1/07D01F1/10D01D5/34
CPCD01D5/34D01F1/07D01F1/103D01F8/14
Inventor 陆育明冯忠耀李东华王佳欢杨卫忠朱亚宏李忠周永华
Owner SHANGHAI DEFULUN CHEM FIBER
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