Unlock instant, AI-driven research and patent intelligence for your innovation.

A preparation method of anti-melt drop antistatic high-strength flame-retardant polyester for military use

A flame-retardant polyester and anti-droplet technology, which is applied in the manufacture of fire-resistant and flame-retardant filaments, conductive/antistatic filaments, and complete sets of equipment for the production of artificial threads. Poor, lack of hydrophilic groups and other problems, to achieve the technical revolution guarantee of polyester industry, simple equipment, low price effect

Inactive Publication Date: 2017-06-06
DONGHUA UNIV +1
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Polyester fiber is a melt-type combustible fiber, and its limiting oxygen index is only about 22%, which cannot meet the requirements for flame retardancy in some fields, so it is particularly important to study its flame retardancy
Lack of hydrophilic groups in polyester molecules, polyester has poor hygroscopicity, easy to pilling, and generates static electricity

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Add graphite flakes and sodium nitrate to concentrated sulfuric acid at a mass ratio of 1:4, stir for 40 minutes and then add KMnO 4 , Its mass is 4 times that of graphite, react for 1h, move to 45℃ warm water bath and continue to react for 30min, then slowly add water, keep the reaction temperature at 95℃, stir for 10min and add H 2 O 2 Until no bubbles are generated, filter while hot to obtain the product. Weigh the product GO and dissolve it in deionized water and disperse it under ultrasonic conditions for 1 hour to obtain a stable brownish-yellow dispersion. Heat the dispersion to 90°C and add p-phenylenediamine dropwise. The mass ratio of GO to GO is 20 and react for 4 hours. It is filtered and rinsed with methanol and deionized water, and then dried to obtain modified graphene oxide.

[0027] Add the mixture of PET chips and compound flame retardant, anti-dripping agent masterbatch, phenolic antioxidant, and modified graphene oxide into the twin-screw extruder, where...

Embodiment 2

[0030] Add graphite flakes and sodium nitrate to concentrated sulfuric acid at a mass ratio of 1:5, stir for 40 minutes and then add KMnO 4 , Its mass is 3 times that of graphite, react for 2h, move to 35℃ warm water bath and continue to react for 40min, then slowly add water, keep the reaction temperature at 70℃, stir for 10min and then add H 2 O 2 Until no bubbles are generated, filter while hot to obtain the product. Weigh the product graphene oxide, dissolve it in deionized water, and disperse it under ultrasonic conditions for 1 hour to obtain a brownish-yellow stable dispersion. Heat the dispersion to 80°C and add p-phenylenediamine dropwise. The mass ratio of it to graphene oxide is 20. After reacting for 3 hours, filter and rinse with methanol and deionized water, and then dry to obtain modified graphene oxide.

[0031] Add the mixture of PET chips and compound flame retardant, anti-dripping agent masterbatch, phenolic antioxidant, and modified graphene oxide into the twin...

Embodiment 3

[0034] Add graphite flakes and sodium nitrate to concentrated sulfuric acid at a mass ratio of 1:6, stir for 40 minutes and then add KMnO 4 , Its mass is twice that of graphite, react for 0.5h, move it into a 30℃ warm water bath and continue to react for 50min, then slowly add water, keep the reaction temperature at 80℃, stir for 10min and add H 2 O 2 Until no bubbles are generated, filter while hot to obtain the product. Weigh the product GO, dissolve it in deionized water, and disperse it under ultrasonic conditions for 1 hour to obtain a stable brownish-yellow dispersion. Heat the dispersion to 90°C, and add p-phenylenediamine dropwise. Its mass ratio to graphene oxide is 22. After reacting for 2 hours, it was filtered and washed with methanol and deionized water, and then dried to obtain modified graphene oxide.

[0035] Add the mixture of PET chips and compound flame retardant, anti-dripping agent masterbatch, phenolic antioxidant, and modified graphene oxide into the twin-sc...

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
pore sizeaaaaaaaaaa
limiting oxygen indexaaaaaaaaaa
limiting oxygen indexaaaaaaaaaa
Login to View More

Abstract

The invention relates to a preparation method of military anti-dripping anti-static high-tenacity flame-retardant polyester, which comprises the following steps: dissolving GO in deionized water, carrying out ultrasonic treatment to obtain stable dispersion liquid, heating to 80-95 DEG C, dropwise adding p-phenylenediamine, reacting for 2-4h, filtering, cleaning and drying to obtain modified GO; mixing a PET chip with a compound flame retardant, anti-dripping master batches, a phenolic antioxidant and modified graphene oxide, adding the mixture into a double-screw extruder, and shearing at high temperature to obtain a molten spinning solution; pressing the spinning solution into a spinning component, circularly blowing in the constant temperature and humidity environment, and cooling to obtain nascent fiber; and stretching the nascent fiber through hot oil, then stretching the nascent fiber through boiling water, relaxing at high temperature for thermoforming, washing, drying and winding to obtain the military anti-dripping anti-static high-tenacity flame-retardant polyester. The method provided by the invention is low in cost, is suitable for industrial mass production and has especially important meaning.

Description

Technical field [0001] The invention belongs to the field of polyester melt direct spinning methods, and particularly relates to a method for preparing military anti-melt dripping, antistatic, high-strength, flame-retardant polyester. Background technique [0002] Graphene is currently artificially prepared, the thinnest material known in the world, and the first true two-dimensional carbon material. The thickness is only a single layer of atoms. It is the most basic unit of graphite, carbon nanotubes and fullerenes. , Has novel physical and chemical properties. Many oxygen-containing functional groups, such as carboxyl groups, carbonyl groups, epoxy groups, and hydroxyl groups, are introduced into the graphite sheet after oxidation by acidic and strong oxidizing solvents. Since graphene oxide contains a large number of oxygen-containing groups on the surface and edges, it can continue to react with other compounds. Utilize the carboxyl group on the graphene oxide and the amino...

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
Patent Type & Authority Patents(China)
IPC IPC(8): D01F6/92D01F1/07D01F1/09D01D13/00D01D5/14
Inventor 余木火张锡明张玥陆帅羽于永山周荣伟杨燕平唐静文邓雅耿晓宇
Owner DONGHUA UNIV