Polyamide 5X fiber and preparation method thereof

A technology of polyamide and fiber, applied in the field of polyamide 5X fiber and its preparation, can solve the problems of small production capacity and low spinning efficiency, etc.

Active Publication Date: 2018-07-20
CATHAY R&D CENT CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to solve the defects of low spinning efficiency and small production capacity in the preparation process of polyamide fiber in the prior art, the present invention provides a preparation method of polyamide 5X fiber and the obtained product

Method used

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  • Polyamide 5X fiber and preparation method thereof
  • Polyamide 5X fiber and preparation method thereof
  • Polyamide 5X fiber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0085] (1) Under nitrogen conditions, mix 1,5-pentanediamine, adipic acid and water uniformly, and mix them uniformly in a reactor to obtain a polyamide 56 salt solution; wherein 1,5-pentanediamine and adipic acid The molar ratio is (1-1.05): 1, and the concentration of the salt solution of polyamide is 50% (the percentage is the mass percent of the salt solution of polyamide); take a small amount of salt solution of polyamide and dilute it to 10%, and measure its The pH value under 25 ℃ is 7.8; The salt solution of polyamide, plasticizer (phthalate plasticizer, 1%), antioxidant (antioxidant 1010, 50ppm), nucleating agent ( Montmorillonite, 100ppm) were mixed uniformly to obtain a mixed solution; the mixed solution was concentrated to a concentration of 85% under the conditions of a pressure of 0.38 MPa and a temperature of 150° C. (the percentage is the mass percent of the polyamide salt solution);

[0086] (2) Heating the system, gradually increasing the pressure to 1.7MPa, ...

Embodiment 2

[0093] (1) Under nitrogen conditions, mix 1,5-pentanediamine, adipic acid and water uniformly, and mix them uniformly in a reactor to obtain a polyamide 56 salt solution; wherein 1,5-pentanediamine and adipic acid The molar ratio is (1-1.05): 1, and the concentration of the salt solution of polyamide is 60% (the percentage is the mass percent of the salt solution of polyamide); take a small amount of salt solution of polyamide and dilute it to 10%, and measure its The pH value at 25°C is 7.5; the salt solution of polyamide 56 is concentrated to a concentration of 80% under the conditions of a pressure of 0.4MPa and a temperature of 155°C (the percentage is the mass percentage of the salt solution of polyamide), and then mixed with plasticizer Agent (phthalate plasticizer, 1.2%), antioxidant (antioxidant 1076, 80ppm), nucleating agent (talcum powder, 50ppm) mix homogeneously;

[0094] (2) Heating the system, gradually increasing the pressure to 1.7MPa, exhausting, and maintaini...

Embodiment 3

[0100] (1) Under nitrogen conditions, mix 1,5-pentanediamine, adipic acid and water uniformly, and mix them uniformly in a reactor to obtain a polyamide 56 salt solution; wherein 1,5-pentanediamine and adipic acid The molar ratio is (1-1.05): 1, and the concentration of the salt solution of polyamide is 70% (the percentage is the mass percent of the salt solution of polyamide); take a small amount of salt solution of polyamide and dilute it to 10%, and measure its The pH value at 25°C is 8.0; the salt solution of polyamide 56 is concentrated to a concentration of 83% (the percentage is the mass percentage of the salt solution of polyamide) under the conditions of a pressure of 0.45MPa and a temperature of 160°C, and then mixed with plasticizer Agent (paraffin, 0.8%), antioxidant (antioxidant 164, 60ppm), nucleating agent (magnesium hydroxide, 60ppm) mix homogeneously;

[0101] (2) Heating the system, gradually increasing the pressure to 1.65MPa, exhausting, maintaining the pre...

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Abstract

The invention discloses a preparation method of a polyamide 5X fiber, and the polyamide 5X fiber prepared therethrough. The preparation method is characterized in that a spinning raw material is spun,and the spinning raw material comprises 1,5-pentanediamine and a dibasic acid, or polyamide obtained by polymerizing 1,5-pentanediamine and the dibasic acid as monomers; and the number of holes in aspinneret during spinning is 3500-10000 f. The preparation method of the polyamide 5X fiber can further improve the spinning efficiency and increase the spinning production capacity while ensuring that all the properties of the obtained fiber are unchanged or even slightly improved.

Description

technical field [0001] The invention belongs to the field of polymer materials, and in particular relates to a polyamide 5X fiber and a preparation method thereof. Background technique [0002] With the improvement of people's living standards, people's concept of fiber has not only stopped at cotton fiber, but more and more polyamide fibers have entered people's lives. Polyamide refers to a polymer with amide repeating units in the polymer chain, which has excellent comprehensive properties such as mechanical properties, formability, wear resistance, and chemical resistance. Using polyamide as raw material, polyamide fiber can be produced by spinning. Polyamide fiber is widely used in various kinds of clothing due to its plump hand feeling, wear resistance and bright color, and is frequently used as high-grade fabric raw materials. [0003] The research and development of polyamides began in the 1930s. In 1935, Carthers and others prepared linear polyamide 66 in the labo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/90D01F1/10C08G69/26D01D4/02D01D5/092D01D5/12D01D10/02
CPCD01D4/02D01D5/092D01D5/12D01D10/02D01F1/10D01F6/90C08G69/26
Inventor 陈国祥孙朝续刘修才
Owner CATHAY R&D CENT CO LTD
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