Supercharge Your Innovation With Domain-Expert AI Agents!

Preparation method of halogen-free flame-retardant nylon filaments

A technology for flame-retardant nylon and filaments, which is applied in the manufacture of fire-resistant and flame-retardant filaments, rayon, and single-component polyamide rayon, and can solve the problems of high toxicity and low viscosity of flame-retardant nylon filaments. Achieve the effects of good dyeing uniformity and spinnability, simple process and high economic benefits

Active Publication Date: 2020-12-11
SHEN MA INDUSTRY CO LTD
View PDF10 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems of strong toxicity and low viscosity of flame-retardant nylon filaments in the prior art, the present invention provides a preparation method of halogen-free flame-retardant nylon filaments

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of halogen-free flame-retardant nylon filaments
  • Preparation method of halogen-free flame-retardant nylon filaments

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Preparation of halogen-free flame retardant masterbatch: Nylon 6 slices with a mass fraction of 55%, graphite-like carbon nitride with a mass fraction of 40% and a mass ratio of 1:3:2, and melamine polyphosphate coated with silane microcapsules , a compound of aluminum diethyl hypophosphite, a halogen-free flame retardant, a styrene-maleic anhydride compatibilizer with a mass fraction of 3%, and an antioxidant 1216 with a mass fraction of 2% were added to a high-efficiency dynamic mixer and mixed Evenly, after being fully mixed and uniform, the material is discharged into the feeding port of the twin-screw extruder, melted and extruded through the twin-screw extruder, cooled with a pull rod, and then dragged and pelletized. The temperature settings of each zone of the twin-screw extruder are respectively 210°C-210°C-220°C-220°C-225°C-230°C-230°C-230°C-235°C-235°C-230°C, the temperature of the cooling water is controlled at 60°C, and it is obtained by melt extrusion granu...

Embodiment 2

[0025] Preparation of halogen-free flame retardant masterbatch: Nylon 66 chips with a mass fraction of 60%, graphite-like carbon nitride with a mass fraction of 35% and a mass ratio of 1:3:2, and melamine polyphosphate coated with silane microcapsules , a compound of calcium diethyl hypophosphite, a halogen-free flame retardant, a styrene-maleic anhydride compatibilizer with a mass fraction of 2.5%, and an antioxidant 1010 with a mass fraction of 2.5% are added to a high-efficiency dynamic mixer and mixed Evenly, after being fully mixed and uniform, the material is discharged into the feeding port of the twin-screw extruder, melted and extruded through the twin-screw extruder, cooled with a pull rod, and then dragged and pelletized. The temperature settings of each zone of the twin-screw extruder are respectively 250°C-250°C-260°C-260°C-260°C-265°C-265°C-265°C-270°C-270°C-265°C, the cooling water temperature is controlled at 60°C, granulated by melt extrusion and cooled to obta...

Embodiment 3

[0028] Preparation of halogen-free flame retardant masterbatch: Nylon 56 slices with a mass fraction of 58%, graphite-like carbon nitride with a mass fraction of 38% and a mass ratio of 1:3:2, and melamine polyphosphate coated with silane microcapsules , a compound of magnesium diethyl hypophosphite halogen-free flame retardant, a styrene-maleic anhydride compatibilizer with a mass fraction of 2%, and an antioxidant 1330 with a mass fraction of 2% were added to a high-efficiency dynamic mixer and mixed Evenly, after being fully mixed and uniform, the material is discharged into the feeding port of the twin-screw extruder, melted and extruded through the twin-screw extruder, cooled with a pull rod, and then dragged and pelletized. The temperature settings of each zone of the twin-screw extruder are respectively 245°C-245°C-250°C-250°C-250°C-260°C-260°C-260°C-265°C-265°C-260°C, the cooling water temperature is controlled at 60°C, granulated by melt extrusion and cooled to obtain ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention belongs to the technical field of novel flame-retardant materials, and particularly relates to a preparation method of halogen-free flame-retardant nylon filaments. The preparation method comprises the following steps of uniformly mixing polyamide slices, a halogen-free flame retardant, a compatilizer and an antioxidant, and carrying out extrusion and granulation through a double-screw extruder to obtain halogen-free flame-retardant master batch; and injecting the prepared halogen-free flame-retardant master batch into a single-screw extruder, melting, mixing and extruding the master batch and the polyamide slices, feeding a melt into a spinning component, performing filtration, performing extrusion, performing cooling by side blowing to obtain nascent fibers, performing cooling and curing, performing oiling, bundling, drafting, meshing and winding forming by adopting an oil wheel, and performing spinning to obtain the halogen-free flame-retardant nylon filaments. The halogen-free flame-retardant nylon filaments have the advantages of small addition amount of the flame retardant, relatively good mechanical properties, dyeing properties and flame retardancy and good dyeing uniformity and spinnability, have gas-phase and condensed-phase dual flame-retardant effects, can achieve the effect that a small amount of molten drops drip and is wide in application range, andthe breaking strength loss of the flame-retardant filaments is 10% or below.

Description

technical field [0001] The invention belongs to the technical field of novel flame-retardant materials, and in particular relates to a preparation method of a halogen-free flame-retardant nylon filament. Background technique [0002] Most pure polymer fibers have flammable properties and become a safety hazard for fires. Therefore, the flame retardant modification of polymer fibers has always been an important topic for researchers in this field. In the prior art, flame retardant modification of nylon filaments is usually carried out by methods such as blending flame retardant modification, copolymerization flame retardant modification and fiber post-treatment, but the above flame retardant methods still have poor compatibility and uneven dispersion. cumbersome and other issues, Chinese patent CN102186928A discloses a flame-retardant polymer composite material, fiber, blanket and their respective preparation methods, but it mainly uses bromine-containing flame retardants to...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): D01F6/90D01F1/07D01F1/10
CPCD01F6/90D01F1/07D01F1/10
Inventor 张电子段文亮李毅王劼石华李明春杨东华段甲欣高晓兵李晓霞张炎斌白荣光
Owner SHEN MA INDUSTRY CO LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com