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Polyamide monofilament, and production method and application thereof

A polyamide and polyamide resin technology, applied in the field of polyamide materials, can solve the problems of pollution and complex production process, and achieve the effects of good softness, low initial modulus and good lodging resistance.

Active Publication Date: 2017-04-05
CATHAY R&D CENT CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since caprolactam and adipic acid are obtained through a series of reactions such as hydrogenation and reoxidation of benzene homologs, hexamethylenediamine is obtained by first synthesizing adiponitrile from butadiene or acrylonitrile and then through catalytic hydrogenation. Therefore, the brush The production process of silk is relatively complicated as a whole, not only has certain pollution, but also relies on non-renewable resources such as petroleum

Method used

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  • Polyamide monofilament, and production method and application thereof
  • Polyamide monofilament, and production method and application thereof
  • Polyamide monofilament, and production method and application thereof

Examples

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preparation example Construction

[0035] The invention relates to a polyamide resin and a preparation method thereof, a polyamide monofilament containing the polyamide resin, a preparation method and application of the polyamide monofilament, and a cleaning appliance using the polyamide monofilament.

[0036]

[0037] The production raw material of the polyamide resin of the present invention contains at least polyamide made of raw materials such as diamine and dibasic acid. However, according to specific circumstances, the raw materials for polyamide resin production can also contain additives, but it is necessary to ensure that the addition of polyamide is not less than 50% of the total weight of polyamide resin and the addition of additives does not exceed 50% of the total weight of polyamide resin. 50%, it can also be preferred that the amount of polyamide added is not less than 70% of the total weight of the polyamide resin and the amount of additives added is not more than 30% of the total weight of the...

preparation example 1

[0126] Preparation example one (polyamide 510)

[0127] This preparation example provides a kind of preparation method of polyamide 510, and it comprises the steps:

[0128] (1), replace the air with nitrogen in a 100-liter polymerization kettle (K / SY166-2007 type), add 30kg of pure water to the reactor, and then add 10.06kg (98.5mol) of 1,5-pentanediamine (including ASTM D6866 standard organic carbon from renewable sources), after stirring, add 19.93kg (98.5mol) sebacic acid, adjust the pH value to 8.43 with a small amount of 1,5‐pentamethylenediamine and sebacic acid (take nylon salt solution to dilute to 10% to detect the pH value) to obtain a nylon saline solution;

[0129] (2) Under a nitrogen environment, use an oil bath to heat, and gradually increase the temperature of the oil bath to 280°C. After the pressure in the polymerization kettle rises to 1.73Mpa, start exhausting. When the temperature in the kettle reaches 265°C, vacuumize to ‐0.06Mpa, keep the vacuum degre...

preparation example 2

[0131] Preparation example two (polyamide 510)

[0132] This preparation example provides a kind of preparation method of polyamide 510, and it comprises the steps:

[0133] (1), replace the air with nitrogen in a 100-liter polymerization kettle (K / SY166-2007 type), add 12.8kg of pure water to the reactor, and then add 10.06kg (98.5mol) of 1,5-pentanediamine (containing ASTM D6866 standard organic carbon from renewable sources), after stirring, add 19.93kg (98.5mol) sebacic acid, adjust the pH value to 8.20 with a small amount of 1,5‐pentamethylenediamine and sebacic acid (take nylon salt solution Dilute to 10% to detect pH value), make nylon saline solution;

[0134] (2) Under a nitrogen environment, use an oil bath to heat, and gradually increase the temperature of the oil bath to 280°C. After the pressure in the polymerization kettle rises to 1.0Mpa, start exhausting. When the temperature in the kettle reaches 265°C, vacuumize to ‐0.055Mpa, keep the vacuum for 20min, and ...

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Abstract

The invention provides a polyamide monofilament, and a production method and an application thereof. A raw material for producing the polyamide monofilament comprises polyamide resin, and the polyamide resin is produced from 1,5-pentamethylenediamine and aliphatic long-carbon chain diacid. The production method of the polyamide monofilament is characterized in that polyamide monofilament is obtained through spinnereting, cooling molding, drawing and winding setting of dried polyamide resin. The raw material for producing the polyamide monofilament contains a monomer with the carbon number being an odd number, so a hydrogen bond proportion formed among molecules of an amido group, the crystal form and molecular chain space arrangement are different from those of conventional polyamide monofilaments produced from a monomer with the carbon number being an odd number; and the polyamide monofilament provided by the invention has a lower initial modulus and a higher bending resilience than the conventional polyamide monofilaments, and can be used to produce super soft filament and prolong the service life of the super soft filaments.

Description

technical field [0001] The invention belongs to the technical field of polyamide materials, and relates to a polyamide monofilament and its preparation method and application. Background technique [0002] Monofilament fibers made of polyamide materials can be used to prepare brush filaments because of their good wear resistance and good resilience. For example, brush filaments made of nylon 6, nylon 610 or nylon 612 are common on the market. [0003] As far as the brush filament made of nylon 6 is concerned, although it has good wear resistance and resilience, it has high water absorption and is prone to permanent deformation in a humid environment, so the durability is not good. [0004] As far as the brush filaments made of nylon 610 and nylon 612 are concerned, although their water absorption rate is lower than that of nylon 6 filaments, both of them basically use petroleum derivatives as raw materials for production. For example, caprolactam and adipic acid or hexamet...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/60D01F6/90D01D5/098D01D10/02C08G69/26A46D1/04A46D1/00
Inventor 郑毅秦兵兵冯淑芹刘修才
Owner CATHAY R&D CENT CO LTD
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