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Preparation method of anti-flaming PTT (polytrimethylene terephthalate) fiber

A fiber and flame retardant technology, applied in the field of chemical fiber preparation, can solve the problems of polyester performance degradation, inability to perform spinning operations, poor dyeing uniformity, etc., and achieve good fusion, improved polyester performance, and uniform dyeing Effect

Inactive Publication Date: 2013-04-03
SUZHOU LONGJIE SPECIAL FIBER
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AI Technical Summary

Problems solved by technology

[0003] Blending treatment is used in the traditional production process. Flame-retardant masterbatches are added after melting, and flame-retardant fibers are produced by blending and spinning. In this method, the flame retardants are small molecules or cannot be well integrated with polyester, resulting in polyester performance. decline, poor dyeing uniformity, and even subsequent spinning operations cannot be performed

Method used

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  • Preparation method of anti-flaming PTT (polytrimethylene terephthalate) fiber

Examples

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Embodiment 1

[0029] Such as figure 1 Shown, this patent is realized like this: the purpose of the present invention is to overcome above-mentioned deficiency, provides a kind of device and method that can replace traditional fluidized bed stirring crystallization.

[0030] In the polytrimethylene terephthalate (PTT) reactor, add terephthalic acid (PTA) and 1,3-propanediol (PDO) at a molar ratio of 1:18, and add an appropriate amount of stabilizer trimethanol phosphate ( TMP) and esterification catalyst tetrabutyl titanate (TBT), then beating and heating up to 240-260°C. Add flame retardant 2-carboxyethylphenylphosphinic acid (CEPPA) and 1,3-propanediol (PDO) solution after esterification, slowly raise the temperature to 265°C, and evaporate excess 1,3-propanediol (PDO) , After evacuating low vacuum for 40 minutes, switch to high vacuum to carry out polycondensation reaction. The polycondensation reaction temperature is controlled at 265-280 degrees Celsius, and the material can be discha...

Embodiment 2

[0032] On the basis of the above examples, if figure 1 Shown, a kind of flame-retardant PTT fiber preparation method, wherein, comprises the following steps:

[0033] A: In the polytrimethylene terephthalate (PTT) reactor, add terephthalic acid (PTA) and 1,3-propylene glycol (PDO);

[0034] B: adding a predetermined amount of stabilizer and esterification catalyst;

[0035] C: beating and heating up;

[0036] D: After the esterification is completed, after adding the flame retardant, the temperature is raised slowly;

[0037] F: The discharge is completed.

[0038] Preferably, in the step A, terephthalic acid (PTA) and 1,3-propanediol (PDO) are added in a molar ratio of 1:18.

[0039] Preferably, before the step A, the preparation steps of the 1,3-propanediol (PDO) are as follows:

[0040] A00: Evaporate 1,3 propylene glycol (PDO);

[0041] A01: Turn to high vacuum after 40 minutes of low vacuum;

[0042] A02: carry out polycondensation reaction;

[0043] Preferably, i...

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Abstract

The invention relates to a preparation method of an anti-flaming PTT (polytrimethylene terephthalate) fiber. The preparation method of the anti-flaming PTT fiber comprises the following steps of A, adding terephthalic acid (PTA) and 1,3-propylene glycol (PDO) to a polytrimethylene terephthalate (PTT) reaction kettle; B, adding a preset volume of stabilizer and esterification catalyst; C, pulping and heating; D, adding a fire retardant after esterification is finished, and then slowly heating; and E, finishing discharging. By adopting the technical scheme disclosed by the invention, the preparation method is concise and efficient; a plurality of defects and advantages in preparation of fire resistant fibers in the existing blending manner can be solved; good fusion of the fire retardant and polyester is ensured; the polyester performance is improved; uniform dyeing is ensured; and subsequent spinning operation is effectively guaranteed.

Description

technical field [0001] The invention relates to a method for preparing chemical fibers, in particular to a method for preparing flame-retardant PTT fibers. Background technique [0002] With the rapid development of textile flame retardant material research and frequent demand, the requirements for textile flame retardant performance, multi-functionality and environmental protection are increasing day by day. Its textiles have flame-retardant properties to meet the social demand for flame-retardant textiles, increase people's sense of security, reduce fires, and reduce the loss of people's lives and property caused by fires. [0003] Blending treatment is used in the traditional production process. Flame-retardant masterbatches are added after melting, and flame-retardant fibers are produced by blending and spinning. In this method, the flame retardants are small molecules or cannot be well integrated with polyester, resulting in polyester performance. decline, poor dyeing ...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08K5/521C08K5/5313C08K5/053C08G63/183C08G63/85D01F6/92D01F1/07
Inventor 徐醒我葛建军
Owner SUZHOU LONGJIE SPECIAL FIBER
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