Copolyamide industrial yarn and preparation method thereof

A technology of copolyamide and industrial yarn, which is applied in the direction of single-component polyamide rayon, rayon manufacturing, filament/thread forming, etc., which can solve the problem of low wear resistance and chemical resistance of polyester industrial yarn and increase production Cost, complex production process and other issues, to achieve low heat shrinkage performance, improve breaking strength, increase the effect of drafting ratio

Pending Publication Date: 2019-06-25
CATHAY WUSU BIOMATERIAL CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above method requires ultraviolet light irradiation to make it crosslinked, and the production process is relatively complicated, which increases the production cost and reduces

Method used

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  • Copolyamide industrial yarn and preparation method thereof

Examples

Experimental program
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Example Embodiment

[0072] Example 1

[0073] The copolyamide industrial yarn of this embodiment is obtained by polymerizing raw materials including monomers and additives. The monomers are composed of 1,5-pentanediamine, terephthalic acid and adipic acid. The mass content of diamine is 40%, the mass content of terephthalic acid is 25%, and the mass content of adipic acid is 35%; the additive is antioxidant 1010.

[0074] The preparation method of the copolyamide industrial yarn of this embodiment includes the following steps:

[0075] 1. Prepare the mixed solution

[0076] Under nitrogen conditions, mix 1.32kg of 1,5-pentanediamine, 0.817kg of terephthalic acid, 1.16kg of adipic acid, 3.3kg of water and antioxidant 1010 in the polymerizer, and use a small amount of pentanediamine to adjust The pH value is 8.0 to obtain a mixed solution; wherein, the total concentration of monomers in the mixed solution is 50 wt%, and the content of antioxidant 1010 is 50 ppm.

[0077] 2. Preparation of copolyamide melt ...

Example Embodiment

[0087] Example 2

[0088] The copolyamide industrial yarn of this embodiment is obtained by polymerizing raw materials including monomers and additives. The monomers are composed of 1,5-pentanediamine, terephthalic acid and adipic acid. The mass content of diamine is 40%, the mass content of terephthalic acid is 31%, and the mass content of adipic acid is 29%; the additive is copper acetate.

[0089] The preparation method of the copolyamide industrial yarn of this embodiment includes the following steps:

[0090] 1. Prepare the mixed solution

[0091] Under nitrogen conditions, mix 1.31kg of 1,5-pentanediamine, 1.02kg of terephthalic acid, 0.971kg of adipic acid, 3.3kg of water and copper acetate in a polymerizer, and use a small amount of pentanediamine to adjust the pH Is 8.0 to obtain a mixed solution; wherein the total concentration of monomers in the mixed solution is 50% by weight, and the content of copper acetate is 0.5%.

[0092] 2. Preparation of copolyamide melt

[0093] He...

Example Embodiment

[0102] Example 3

[0103] The copolyamide industrial yarn of this embodiment is obtained by polymerization of raw materials including monomers and additives. The monomers are composed of 1,5-pentanediamine, terephthalic acid and dodecanedicarboxylic acid. The mass content of 5-pentanediamine is 35%, the mass content of terephthalic acid is 37%, and the mass content of dodecanedioic acid is 28%; the additive is sodium hypophosphite.

[0104] The preparation method of the copolyamide industrial yarn of this embodiment includes the following steps:

[0105] 1. Prepare the mixed solution

[0106] Under nitrogen conditions, mix 1.4kg of 1,5-pentanediamine, 1.47kg of terephthalic acid, 1.09kg of dodecanedioic acid, 2.64kg of water and sodium hypophosphite in the polymerizer and use a small amount of The amine adjusts the pH to 7.8 to obtain a mixed solution; wherein the total concentration of monomers in the mixed solution is 60 wt%, and the content of sodium hypophosphite is 80 ppm.

[010...

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Abstract

The invention provides a copolyamide industrial yarn and a preparation method thereof. The copolyamide industrial yarn is prepared by polymerizing raw materials including a monomer, the monomer includes 1, 5-pentanediamine, a first dibasic acid and a second dibasic acid, wherein the first dibasic acid is terephthalic acid; the preparation method of the copolyamide industrial yarn comprises the following steps: 1) preparing the raw materials into a mixed solution; 2) polymerizing, granulating and solid-phase-tackifying the mixed solution to obtain tackifying copolyamide resin, and heating and melting the tackifying copolyamide resin to obtain tackifying copolyamide melt; 3) spinning the tackified copolyamide melt to obtain virgin yarn; 4) carrying out cooling, oiling, stretching and windingforming on the virgin silk to obtain the copolyamide industrial yarn. The copolyamide industrial yarn has good high temperature resistance and thermal stability.

Description

technical field [0001] The invention relates to a copolyamide material, in particular to a copolyamide industrial yarn and a preparation method thereof. Background technique [0002] Industrial yarn has the characteristics of high strength, low elongation, good dimensional stability, corrosion resistance, fatigue resistance, aging resistance, etc., so it is widely used in tire cords, canvas, conveyor belts, airbags, parachutes, ropes, safety belts, Industrial filter cloth, tents and other fields. At present, industrial yarns are mainly polyester, polyamide 6 and polyamide 66, but the melting point of these materials is generally 220-260°C. [0003] The Chinese patent with the publication number CN 105504240A discloses a heat-resistant polyester industrial yarn and its preparation method. The heat-resistant high-strength polyester industrial yarn is spun from polyester containing unsaturated double bonds after solid-phase tackification and passed through Obtained by ultravi...

Claims

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Application Information

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IPC IPC(8): D01F6/90D01F1/10C08G69/26C08G69/28D01D5/088
Inventor 孙朝续季薇芸徐晓辰秦兵兵刘修才
Owner CATHAY WUSU BIOMATERIAL CO LTD
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