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A kind of polyamide fiber flame retardant, flame retardant nylon fiber and preparation method thereof

A polyamide fiber and nylon fiber technology, applied in the manufacture of fire-resistant and flame-retardant filaments, single-component polyamide artificial filaments, organic chemistry, etc., can solve the problems of large amount of flame retardants, high thermal decomposition temperature, and easy breakage Silk and other problems, to achieve the effect of less damage to physical and mechanical properties, good flame retardant effect, and less added amount

Active Publication Date: 2020-07-03
福建赛纤新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

CN 106835333A mentions graphene / nylon 6 fiber with flame retardant and anti-ultraviolet properties and its preparation method, adopts copolymerization method for flame retardant, and has better compatibility with nylon 6 fiber than blending, but graphene is used alone, and the flame retardant effect Not good, and there are problems with industrial production
[0007] Melamine cyanurate (MCA), containing a large number of amide groups (—[NHCO]—), has the best compatibility with nylon, high thermal decomposition temperature (350°C), and produces a large amount of CO 2 , NH 3 , N 2 Wait for non-combustible gas to dilute the oxygen concentration on the surface, but its resistance to droplet is poor. Only when the gas source lacks acid source and carbon source, resulting in a large amount of melamine cyanurate, can it have a certain flame retardant effect
[0009] 1. The existing flame retardants are added in a large amount, and the physical and mechanical properties of nylon fibers are greatly reduced
[0010] 2. The graphene flame retardant added by the blending method has poor compatibility with nylon, and the filaments are easy to break during spinning;
[0011] 3. The graphene flame retardant added by the copolymerization method has better compatibility than the blending method, and the operation is complicated, but there are problems in industrial production

Method used

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  • A kind of polyamide fiber flame retardant, flame retardant nylon fiber and preparation method thereof
  • A kind of polyamide fiber flame retardant, flame retardant nylon fiber and preparation method thereof
  • A kind of polyamide fiber flame retardant, flame retardant nylon fiber and preparation method thereof

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Experimental program
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Effect test

no. 1 Embodiment

[0034] Add 1g of graphene oxide, 75ml of thionyl chloride, and 4ml of dimethylformamide into a 250ml round bottom flask; stir at a temperature of 70°C for 24h, and remove excess thionyl chloride by rotary evaporation;

[0035] Add 300ml dimethylformamide solvent into the flask, place it under the ultrasonic generator for 45min, obtain the chloroacylated graphene oxide of monolayer;

[0036] Then add 35 g of melamine cyanurate (MCA) and 3.5 g of melamine phosphate amine salt (MP) into the flask, and stir at 100° C. for 56 h. After separation and washing by vacuum filtration, vacuum drying at 80° C. is obtained to obtain the powdered flame retardant.

[0037] After 7 parts by weight of the flame retardant of the present invention and 93 parts by weight of nylon 6 chips are melt-blended uniformly, the flame-retardant nylon fiber is obtained through high-speed melt spinning and drawing.

no. 2 Embodiment

[0039]Add 1g of graphene oxide, 50ml of thionyl chloride, and 2ml of dimethylformamide into a 250ml round bottom flask; stir at a temperature of 68°C for 28h, and remove excess thionyl chloride by rotary evaporation;

[0040] Add 400ml of dichloromethane solvent into the flask, place it under the ultrasonic generator for 30min, obtain the chloroacylated graphene oxide of monolayer;

[0041] Then add 20 g of melamine cyanurate (MCA) and 2 g of melamine phosphate amine salt (MP) into the flask, and stir at 80° C. for 72 hours. After separation and washing by vacuum filtration, vacuum drying at 85° C. is obtained to obtain the powdered flame retardant.

[0042] After 10 parts by weight of the flame retardant of the present invention and 90 parts by weight of nylon 6 chips are melt-blended uniformly, the flame-retardant nylon fiber is obtained through high-speed melt spinning and drawing.

no. 3 Embodiment

[0044] Add 1g of graphene oxide, 100ml of thionyl chloride, and 5ml of dimethylformamide into a 250ml round bottom flask; stir at a temperature of 72°C for 20h, and remove excess thionyl chloride by rotary evaporation;

[0045] Add 500ml dimethylformamide solvent in the flask, place it under the ultrasonic generator for 60min, obtain the chloroacylated graphene oxide of monolayer;

[0046] Then add 50 g of melamine cyanurate (MCA) and 5 g of melamine phosphate amine salt (MP) into the flask, and stir at 130° C. for 48 hours. After separation and washing by vacuum filtration, vacuum drying at 75° C. is obtained to obtain the powdered flame retardant.

[0047] After 5 parts by weight of the flame retardant of the present invention and 95 parts by weight of nylon 6 chips are melt-blended uniformly, the flame-retardant nylon fiber is obtained through high-speed melt spinning and drawing.

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Abstract

The invention provides a polyarmide fiber fire retardant, a fire-retardant polyamide fiber and a preparation method of the polyarmide fiber fire retardant. The chemical structural formula of the polyarmide fiber fire retardant is shown as the formula (I). In the technical scheme, melamine phosphate is connected to melamine cyanurate by taking the melamine cyanurate as a matrix of the fire retardant and taking GO (graphene oxide) as a coupling agent. The fire retardant prepared by the method has the characteristics that an acid source, a carbon source and an air source simultaneously exist, theaddition amount of the melamine cyanurate is small, and the fire retardant effect is good. Meanwhile, the fire retardant contains a large amount of amide groups, so that the fire retardant is good incompatibility with polyamide and has spinnability; compared with the conventional fire retardant, the fire retardant is less in damage to the physical and mechanical properties of the polyamide fiberand even has a function of enhancing the physical and mechanical properties of the polyamide fiber.

Description

technical field [0001] The invention relates to the field of textile industry, in particular to a polyamide fiber flame retardant, a flame retardant nylon fiber and a preparation method thereof. Background technique [0002] Polyamide fiber, commonly known as nylon and nylon, is a general term for thermoplastic fibers containing repeated amide groups—[NHCO]—on the main molecular chain. Nylon fiber has the characteristics of good wear resistance, high resilience, good dyeability, and excellent mechanical properties, and can be used in clothing, construction, chemical and other fields. However, the currently commonly used nylon 6 and nylon 66 have poor thermal properties and are easy to burn. The melting point of nylon 6 is 225°C, and the melting point of nylon 66 is 264°C, and its thermal decomposition temperature and combustion temperature are above 400°C, so it is easy to produce The molten drips caused the fire to spread, thus limiting the application range of nylon fiber...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D493/08C09K21/10C09K21/12D01F1/07D01F6/60
CPCC07D493/08C09K21/10C09K21/12D01F1/07D01F6/60
Inventor 方华玉鲍领翔王国德卓丽琼吴建通李天源朱恩斌姜兴盛李忠亭杨庆文陈建华托马斯·沃尔特施密特克里斯蒂娜·罗森赫斯勒卡梅伦·达内希瓦尔
Owner 福建赛纤新材料有限公司