Phosphorus-containing flame retardant nylon and its preparation method and application

Abstract

The invention provides a phosphorus-containing flame-retardant nylon, a preparation method and application thereof, namely, a macromolecular phosphine-containing component is introduced into the nylon polymerization process to maximize the compatibility of the system and reduce the blending modification. It can significantly improve the flame retardancy and spinnability of nylon, and this method is simple in process, easy to produce on a large scale, and more suitable for applications in the field of spinning-fiber, wire and cable, and 3D printing.

Description

technical field

[0001] The invention relates to a phosphorus-containing flame-retardant nylon and a preparation method and application thereof, in particular to a phosphorus-containing flame-retardant and anti-dripping nylon material which can be prepared by a polymerization method. Background technique

[0002] Polyamide (PA, commonly known as nylon) has good comprehensive properties and is an important raw material for synthetic fibers. When used as fibers, it has the advantages of good wear resistance, high resilience, high breaking strength, and good dyeability. However, when polyamide is used in synthetic fibers, it has poor heat resistance and may be flammable in harsh environments, which limits its application in many fields. Therefore, the flame-retardant modification and anti-drip modification of nylon are particularly important. .

[0003] In the field of engineering plastics, flame retardant modification of nylon is mainly carried out by twin-screw melt blending ...

Examples

Embodiment 1

[0068] Example 1: Flame Retardant Nylon I

[0069] 1880g of solid caprolactam was taken, melted at 130°C, 120g of polyphosphonate (Nofia OL1001 from FRX Polymer Company) was added, and after it was fully dissolved, the material was put into a 5L autoclave, and 60g of deionized water was added. Replace the air in the kettle with nitrogen, turn on stirring, heat up to 250 °C, keep the pressure in the kettle at 0.5 MPa, open the ring for 3 hours, and then release the pressure and pass nitrogen for 5 hours. , finally vacuumed for 0.5h, left to discharge, cast tape, cut into pellets, extracted with deionized water at 90°C for 12h, and vacuum dried at 80°C for 12h to obtain flame retardant nylon 6 slices.

Embodiment 2

[0070] Example 2: Flame Retardant Nylon II

[0071] 1840g of solid caprolactam was taken, melted at 130°C, 160g of polyphosphonate (Nofia OL1001 from FRX Polymer Company) was added, and after it was fully dissolved, the material was put into a 5L autoclave, and 60g of deionized water was added. Replace the air in the kettle with nitrogen, turn on stirring, heat up to 250 °C, keep the pressure in the kettle at 0.5 MPa, open the ring for 3 hours, and then release the pressure and pass nitrogen for 5 hours. , finally vacuumed for 0.5h, left to discharge, cast tape, cut into pellets, extracted with deionized water at 90°C for 12h, and vacuum dried at 80°C for 12h to obtain flame retardant nylon 6 slices.

Embodiment 3

[0072] Example 3: Flame Retardant Nylon III

[0073] 1800g of solid caprolactam was taken, melted at 130°C, 200g of polyphosphonate (Nofia OL1001 from FRX Polymer Company) was added, and after it was fully dissolved, the material was put into a 5L autoclave, and 60g of deionized water was added. Replace the air in the kettle with nitrogen, turn on stirring, heat up to 250 °C, keep the pressure in the kettle at 0.5 MPa, open the ring for 3 hours, and then release the pressure and pass nitrogen for 5 hours. , finally vacuumed for 0.5h, left to discharge, cast tape, cut into pellets, extracted with deionized water at 90°C for 12h, and vacuum dried at 80°C for 12h to obtain flame retardant nylon 6 slices.

technical field

[0001] The invention relates to a phosphorus-containing flame-retardant nylon and a preparation method and application thereof, in particular to a phosphorus-containing flame-retardant and anti-dripping nylon material which can be prepared by a polymerization method. Background technique

[0002] Polyamide (PA, commonly known as nylon) has good comprehensive properties and is an important raw material for synthetic fibers. When used as fibers, it has the advantages of good wear resistance, high resilience, high breaking strength, and good dyeability. However, when polyamide is used in synthetic fibers, it has poor heat resistance and may be flammable in harsh environments, which limits its application in many fields. Therefore, the flame-retardant modification and anti-drip modification of nylon are particularly important. .

[0003] In the field of engineering plastics, flame retardant modification of nylon is mainly carried out by twin-screw melt blending ...

Examples

Embodiment 1

[0068] Example 1: Flame Retardant Nylon I

[0069] 1880g of solid caprolactam was taken, melted at 130°C, 120g of polyphosphonate (Nofia OL1001 from FRX Polymer Company) was added, and after it was fully dissolved, the material was put into a 5L autoclave, and 60g of deionized water was added. Replace the air in the kettle with nitrogen, turn on stirring, heat up to 250 °C, keep the pressure in the kettle at 0.5 MPa, open the ring for 3 hours, and then release the pressure and pass nitrogen for 5 hours. , finally vacuumed for 0.5h, left to discharge, cast tape, cut into pellets, extracted with deionized water at 90°C for 12h, and vacuum dried at 80°C for 12h to obtain flame retardant nylon 6 slices.

Embodiment 2

[0070] Example 2: Flame Retardant Nylon II

[0071] 1840g of solid caprolactam was taken, melted at 130°C, 160g of polyphosphonate (Nofia OL1001 from FRX Polymer Company) was added, and after it was fully dissolved, the material was put into a 5L autoclave, and 60g of deionized water was added. Replace the air in the kettle with nitrogen, turn on stirring, heat up to 250 °C, keep the pressure in the kettle at 0.5 MPa, open the ring for 3 hours, and then release the pressure and pass nitrogen for 5 hours. , finally vacuumed for 0.5h, left to discharge, cast tape, cut into pellets, extracted with deionized water at 90°C for 12h, and vacuum dried at 80°C for 12h to obtain flame retardant nylon 6 slices.

Embodiment 3

[0072] Example 3: Flame Retardant Nylon III

[0073] 1800g of solid caprolactam was taken, melted at 130°C, 200g of polyphosphonate (Nofia OL1001 from FRX Polymer Company) was added, and after it was fully dissolved, the material was put into a 5L autoclave, and 60g of deionized water was added. Replace the air in the kettle with nitrogen, turn on stirring, heat up to 250 °C, keep the pressure in the kettle at 0.5 MPa, open the ring for 3 hours, and then release the pressure and pass nitrogen for 5 hours. , finally vacuumed for 0.5h, left to discharge, cast tape, cut into pellets, extracted with deionized water at 90°C for 12h, and vacuum dried at 80°C for 12h to obtain flame retardant nylon 6 slices.

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