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Method for preparing flame-retardant melt-proof fibers

An anti-melt drop and fiber technology, which is applied in the manufacture of fire-retardant and flame-retardant filaments, single-component polyolefin rayon, single-component polyamide rayon, etc. The effect of simple production and process flow

Active Publication Date: 2017-06-09
QINGDAO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the coarse particle size and large dosage of the existing powder, it cannot be used for fiber spinning by melt blending

Method used

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  • Method for preparing flame-retardant melt-proof fibers
  • Method for preparing flame-retardant melt-proof fibers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The specific process of preparing flame-retardant anti-melt droplet fiber in this embodiment is as follows:

[0022] (1) Dry the PET chips at a temperature of 120°C until the moisture content reaches 300ppm, add graphene and melamine powder to it, and mix and extrude it in a twin-screw extruder at a temperature of about 280°C to obtain a flame-retardant Anti-melt drop polyester masterbatch, the flame-retardant anti-melt drop polyester masterbatch contains 10% graphene powder with a particle size of 0.5 μm, 20% melamine and 70% PET by weight;

[0023] (2) Pre-crystallize the PET chips at a temperature of 120°C, and dry them at a temperature of 140°C until the moisture content reaches 300ppm; the flame-retardant and anti-droplet polyester masterbatch prepared in step (1) is dried at a temperature of 140°C Dry at high temperature until the moisture content reaches 300ppm; add the dried flame-retardant and anti-droplet polyester masterbatch to the PET chip with a volumetric...

Embodiment 2

[0025] The specific process of preparing flame-retardant anti-melt droplet fiber in this embodiment is as follows:

[0026] (1) Dry the PA6 chips at a temperature of about 105°C until the moisture content is lower than 0.08%, add graphene oxide and melamine cyanurate powder to it, and mix them in a twin-screw extruder at a temperature of about 230°C Extruding, thereby making flame-retardant anti-melt drop polyamide master batch, described flame-retardant anti-melt drop polyamide master batch comprises 5% graphene oxide powder with a particle diameter of 0.5 μm by weight, 10% melamine Cyanurate and 85% PA6;

[0027] (2) Dry the PA6 chips at 105°C to make the moisture content lower than 0.08%; The flame-retardant and anti-melt drop masterbatch is quantitatively added to PA6 chips, so that the content of graphene oxide in PA6 is 1%, and conventional nylon spinning equipment and technology are used to spin 150d / 24f PA6 fully drawn yarn.

Embodiment 3

[0029] The specific process of preparing flame-retardant anti-melt droplet fiber in this embodiment is as follows:

[0030] (1) After premixing PP slices, nano-graphite and melamine, they are mixed and extruded in a twin-screw extruder at a temperature of about 180°C to obtain a flame-retardant and anti-melt drop polypropylene masterbatch. Melted polypropylene masterbatch contains 10% graphite powder with a particle size of 1 μm, 10% melamine and 80% PP by weight;

[0031] (2) The above-mentioned flame-retardant and anti-melt drop masterbatch is spun into 75d / 42f PP fully drawn yarn by using conventional polypropylene spinning equipment and technology.

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Abstract

The invention belongs to the technical field of textile fiber modification and relates to a method for preparing flame-retardant melt-proof fibers. The method comprises the following steps: slicing and drying matrix resin, adding anti-dripping agent powder and a flame retardant into the slices, fully mixing, and further blending, extruding, cooling and granulating through a twin-screw extruder so as to obtain a flame-retardant melt-proof master batch; and slicing and drying another matrix resin, conveying the flame-retardant melt-proof master batch to be mixed with the previous matrix resin slices by using an injection machine, fully melting and mixing through a spinning screw, and spinning, thereby obtaining the flame-retardant melt-proof fibers. The anti-dripping agent and the flame retardant are directly added into the matrix resin slices, and a molten drop phenomenon is avoided during combustion of the prepared flame-retardant melt-proof fibers. Moreover, the conventional spinning process of the fibers is not influenced by a blending melt spinning method, the process flow is simple, and industrial production is facilitated.

Description

[0001] Technical field: [0002] The invention belongs to the technical field of textile fiber modification, and relates to a preparation method of a flame-retardant and anti-melt drop fiber. [0003] Background technique: [0004] Thermoplastic fibers, such as polyester and polyamide fibers, have outstanding properties such as good wear resistance, high fatigue resistance and breaking strength, and easy dyeing, so they are widely used in clothing, daily necessities, and industrial supplies. When the molten dripping can spread flames and ignite other substances; if it sticks to the skin, it will cause skin burns, which greatly limits its application in clothing fabrics, decorative fabrics and industrial textiles, although it can be used for such Fibers are flame-retardant processed, but there is no good solution to the problem of dripping. Therefore, the problem of flame-retardant and anti-melting droplets has been continuously explored by researchers. [0005] At present, the...

Claims

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Application Information

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IPC IPC(8): D01F6/92D01F6/90D01F6/46D01F1/07
CPCD01F1/07D01F6/46D01F6/90D01F6/92
Inventor 曲丽君朱士凤田明伟唐一林张金柱
Owner QINGDAO UNIV
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