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Bio-base high-elastic moisture-absorbing easily-dyed long carbon chain polyamide 5X fiber and preparation method thereof

A polyamide, long carbon chain dibasic acid technology, applied in the field of polyamide materials, can solve the problems of not meeting the use standard, low elastic recovery rate, high moisture regain, and achieve reduced emissions, high elastic recovery rate, and large fracture the effect of strength

Inactive Publication Date: 2017-06-20
CATHAY R&D CENT CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Taking PA11 and PA12 as examples, these polyamides have excellent flexibility, but their low elastic recovery rate, low dyeing rate and high moisture regain cannot meet the use standards, thus limiting their further application

Method used

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  • Bio-base high-elastic moisture-absorbing easily-dyed long carbon chain polyamide 5X fiber and preparation method thereof
  • Bio-base high-elastic moisture-absorbing easily-dyed long carbon chain polyamide 5X fiber and preparation method thereof
  • Bio-base high-elastic moisture-absorbing easily-dyed long carbon chain polyamide 5X fiber and preparation method thereof

Examples

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preparation example Construction

[0064] The invention relates to a bio-based high-elastic, moisture-absorbing and easy-to-dye long carbon chain polyamide 5X fiber and a preparation method thereof.

[0065]

[0066] The production raw material of polyamide 5X fiber of the present invention contains at least 1,5-pentanediamine and long carbon chain dibasic acid; or, take 1,5-pentamethylenediamine and long carbon chain dibasic acid as monomer polymerization to obtain Polyamide 5X.

[0067] [1,5‐pentamethylenediamine]

[0068] 1,5-Pentylenediamine can be produced from bio-based raw materials through biological methods.

[0069] Biological methods include the production of 1,5-pentanediamine by biotransformation methods (such as fermentation and enzymatic conversion methods) using bio-based raw materials; or the production of 1,5-pentanediamine by biotransformation methods using petroleum-based raw materials; or using 1,5-Pentylenediamine is produced chemically from bio-based raw materials. Thus, pentamethyle...

Embodiment 1

[0147] Embodiment one: polyamide 510 fiber

[0148] The present embodiment provides a kind of preparation method of polyamide 510 fiber, it comprises the steps:

[0149] (1), heating the polyamide 510 resin to a molten state to form a polyamide 510 melt;

[0150] (2), polyamide 510 melt is carried out spinning, forms spun silk;

[0151] (3) Polyamide 510 fibers are obtained after processing the as-spun silk.

[0152] Wherein, in step (1), the relative viscosity of polyamide 510 resin (in chip form) is 2.6, the water content is 300ppm, and it is prepared by biological method.

[0153] The heating in step (1) is carried out in a single-screw extruder, and the screw extruder is divided into five heating zones, the temperature of the first zone is 180°C, the temperature of the second zone is 220°C, and the temperature of the third zone is 260°C. The temperature in the fourth zone is 270°C, and the temperature in the fifth zone is 280°C.

[0154] The spinning in step (2) includ...

Embodiment 2

[0158] Embodiment two: polyamide 511 fiber

[0159] The present embodiment provides a kind of preparation method of polyamide 511 fiber, it comprises the steps:

[0160] (1), heating the polyamide 511 resin to a molten state to form a polyamide 511 melt;

[0161] (2), polyamide 511 melt is spun to form spun silk;

[0162] (3) Polyamide 511 fibers are obtained after processing the as-spun silk.

[0163] Wherein, in step (1), the relative viscosity of polyamide 511 resin (in chip form) is 2.8, the water content is 400ppm, and it is prepared by biological method.

[0164] The heating in step (1) is carried out in a single-screw extruder, and the screw extruder is divided into five zones for heating, the temperature in the first zone is 170°C, the temperature in the second zone is 240°C, and the temperature in the third zone is 260°C. The temperature in the fourth zone is 280°C, and the temperature in the fifth zone is 280°C.

[0165] The spinning in step (2) includes the foll...

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Abstract

The invention provides a bio-base high-elastic moisture-absorbing easily-dyed long carbon chain polyamide 5X fiber and a preparation method thereof. The production raw material of the polyamide 5X fiber at least contains 1,5-pentamethylene diamine and long carbon chain binary acid, or 1,5-pentamethylene diamine and long carbon chain binary acid are taken as monomers and polymerized into the polyamide 5X. The preparation method comprises the following steps: (1) polymerizing 1,5-pentamethylene diamine and long carbon chain binary acid, thereby forming the polyamide 5X flux, or heating the polyamide 5X resin till being molten, thereby forming the polyamide 5X flux; (2) spinning the polyamide 5X flux, thereby obtaining a primary raw silk; and (3) treating the primary raw silk, thereby obtaining the polyamide 5X fiber. The polyamide 5X fiber has excellent mechanical properties, such as, breaking strength and elongation at break, has the characteristics of high elasticity, lower water absorption, easiness in dyeing, and the like, is suitable for civil and industrial silk preparation and has an extensive application.

Description

technical field [0001] The invention belongs to the technical field of polyamide materials, and relates to a bio-based high-elastic, moisture-absorbing and easy-to-dye long carbon chain polyamide 5X fiber and a preparation method thereof. Background technique [0002] Polyamide fiber refers to a type of synthetic fiber whose macromolecular main chain is connected by amide bonds; it is one of the earliest synthetic fibers put into industrial production in the world, and plays a pivotal role in the field of synthetic fibers. There are many kinds of polyamide fibers, among which polyamide 6 and polyamide 66 are the most widely used in industrial production and application. Polyamide 6 and polyamide 66 are mainly used for spinning synthetic fibers, called nylon 6 and nylon 66. The main applications of polyamide 6 / 66 civil silk products include: socks, lace underwear, corsets, sports underwear, wedding dresses, casual jackets, sportswear, raincoats, jackets, quick-drying clothes...

Claims

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Application Information

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IPC IPC(8): D01F6/60C08G69/26D01D5/08
CPCC08G69/26D01D5/08D01F6/60
Inventor 孙朝续徐晓辰秦兵兵刘修才
Owner CATHAY R&D CENT CO LTD
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