Check patentability & draft patents in minutes with Patsnap Eureka AI!

Halogen-free flame retardant reinforced nylon 66 nanofiber and preparation method thereof

A nanofiber and nylon technology, which is applied in the manufacture of fire-retardant and flame-retardant filaments, fiber processing, and single-component polyamide rayon, can solve the problems of decreased mechanical properties, poor flame retardancy, and precipitation of flame retardants. The effect of enhancing mechanical properties, excellent flame retardant properties and mechanical properties

Active Publication Date: 2018-11-02
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
View PDF6 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The nanofiber in the present invention has a core-shell structure, with nylon 66 as the shell layer, and a halogen-free flame retardant as the core layer, which exhibits excellent flame retardancy and mechanical properties, and solves the problem of flame retardants in the prior art. Problems of precipitation, poor flame retardancy, and decline in mechanical properties

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
  • Halogen-free flame retardant reinforced nylon 66 nanofiber and preparation method thereof
  • Halogen-free flame retardant reinforced nylon 66 nanofiber and preparation method thereof
  • Halogen-free flame retardant reinforced nylon 66 nanofiber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A kind of preparation of halogen-free flame-retardant reinforced nylon 66 nanometer fiber, the steps are as follows:

[0041] 1) Dissolve 2.0 g of nylon 66 in 8.0 g of organic solvent A, stir until completely dissolved at 45° C. to obtain a nylon 66 shell solution with a mass fraction of 20 wt %; wherein organic solvent A is formic acid and dichloromethane according to the mass The solvent obtained by mixing at a ratio of 1.5:1;

[0042] 2) Disperse 100mg of halogen-free flame retardant in 5mL of acetic acid, and ultrasonically disperse until it is completely dispersed, to obtain a core layer dispersion of halogen-free flame retardant with a mass fraction of 2wt%;

[0043] 3) if figure 1 As shown, in a windless environment, use the shell solution injector 1 to inject the nylon 66 shell solution into the outer layer of the coaxial spinneret, and use the core solution injector 2 to inject the core layer dispersion of the halogen-free flame retardant into the coaxial spin...

Embodiment 2

[0050] A preparation of halogen-free flame-retardant reinforced nylon 66 nanofibers, the steps are the same as in Example 1, the only difference being:

[0051] In step 1), 1.75 g of nylon 66 was dissolved in 8.25 g of organic solvent A, and stirred at 45° C. until completely dissolved to obtain a nylon 66 shell solution with a mass fraction of 17.5 wt %;

[0052] Finally, halogen-free flame-retardant reinforced nylon 66 nanofibers with an average diameter of 325 nm were prepared.

[0053] The tensile properties of the prepared halogen-free flame-retardant reinforced nylon 66 nanofibers were tested, and the measured results are listed in Table 1.

Embodiment 3

[0055] A preparation of halogen-free flame-retardant reinforced nylon 66 nanofibers, the steps are the same as in Example 1, the only difference being:

[0056] In step 1), 1.5 g of nylon 66 was dissolved in 8.5 g of organic solvent A, and stirred at 45° C. until completely dissolved to obtain a nylon 66 shell solution with a mass fraction of 15 wt %;

[0057] Finally, halogen-free flame-retardant reinforced nylon 66 nanofibers with an average diameter of 225 nm were prepared.

[0058] The tensile properties of the prepared halogen-free flame-retardant reinforced nylon 66 nanofibers were tested, and the measured results are listed in Table 1.

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

PropertyMeasurementUnit
The average diameteraaaaaaaaaa
The average diameteraaaaaaaaaa
The average diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses a halogen-free flame retardant reinforced nylon 66 nanofiber which is a coaxial nanofiber with a core-shell structure, wherein a shell layer is nylon 66, and a core layer is ahalogen-free flame retardant. The invention also discloses a preparation method of the halogen-free flame retardant reinforced nylon 66 nanofiber. The preparation method comprises the following steps:injecting a nylon 66 solution into an outer layer of a coaxial spinneret by adopting a coaxial electrostatic spinning device, and injecting halogen-free flame retardant dispersion liquid into an inner layer of the coaxial spinneret, and carrying out coaxial electrostatic spinning to obtain the halogen-free flame retardant reinforced nylon 66 nanofiber. The nanofiber obtained by the invention hasa core-shell structure and uniform morphology; the halogen-free flame retardant is uniformly dispersed in the nanofiber, so that flame retardance of the nanofiber is improved, and mechanical propertyof the nanofiber is also improved. Besides, the color and luster of the nylon 66 fiber can be retained, and particularly the problems of precipitation of the flame retardant and poor flame retardancein the prior art are overcome.

Description

technical field [0001] The invention relates to the technical field of novel flame-retardant materials. More specifically, it relates to a halogen-free flame-retardant reinforced nylon 66 nanofiber and a preparation method thereof. Background technique [0002] Most pure polymer fibers have flammable properties and become a safety hazard for fires. Therefore, the research on flame retardant modification of polymer fibers is of great significance to its further development and application. [0003] At present, nylon 66 fiber is mainly modified by three ways, including: blending flame retardant modification, copolymerization flame retardant modification and fiber post-treatment. Blending flame retardant modification is to blend the flame retardant with nylon 66 resin, and then carry out the subsequent spinning process; copolymerization flame retardant modification is to introduce phosphorus, halogen and other functional groups with flame retardant activity during the polyami...

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): D01F6/90D01F1/07D01D5/00
CPCD01D5/003D01F1/07D01F6/90
Inventor 耿建新肖林红黄勇
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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