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Preparation method of highly-spinnable halogen-free flame-retardant nylon fiber

A technology of nylon fiber with high spinnability, which is applied in the manufacture of fire-resistant and flame-retardant filaments, single-component polyamide artificial filaments, etc., and can solve problems such as affecting fiber spinnability, high cost, and non-industrialized mass production. Achieve the effect of improving spinnability, good flame retardancy and improving dispersibility

Active Publication Date: 2012-09-05
上海安凸塑料添加剂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using this method, DuPont of the United States and Unijika of Japan have successfully developed aromatic nylon fibers named "Nomex" and "Apyil" respectively, which have very good heat resistance and a limiting oxygen index of 30-32. , but due to high cost, it is only used in special fields such as military industry and aerospace
The blending method is to add a flame retardant to the melt or spinning solution of the fiber-forming polymer. The method is simple, but the dispersion of the flame retardant and the compatibility with the polymer will affect the spinnability of the fiber, and For nylon, because the flame retardant is difficult to withstand the high temperature of its fiber melt spinning, the tensile strength of nylon fiber is reduced, and it is difficult to spin continuously. Therefore, the application of this method is still in the stage of small test and pilot test. The application numbers are JP2010018906, JP2007308838, JP2007056392, JP2000328363, and 200710046218.0. In these patents, different flame retardants are used to obtain flame-retardant nylon fibers, but none of them has achieved real high spinnability, and there is no industrialized mass production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Preparation of highly spinnable halogen-free flame-retardant nylon fiber, wherein the first step is halogen-free flame-retardant nylon masterbatch, the weight percentage of each component is: nylon chips (M2800, produced by Xinhui Meida Company, viscosity 2.8dl / g) 60%, cyclic phosphate (ANTIBLAZE 1045) 6%, melamine cyanurate (with EBS surface treatment) 30%, of which, 90% of melamine cyanurate particle size is less than 5 microns, of which 50% of melamine cyanurate The particle size of the urate is 1-2 microns, the nano diatomite (particle size is 10nm) is 2%, and the antioxidant SEED is 2%. After the above components are mixed, they are added to the co-rotating twin-screw extruder to extrude and granulate, and the rods are water-cooled and then pulled to pelletize. The temperature of the twin-screw extruder is set at 200°C-220°C-220°C-230°C ℃-230℃-230℃-240℃-230℃. The cooling water temperature is controlled at 70°C, and the halogen-free flame-retardant nylon masterbatc...

Embodiment 2

[0037] Preparation of highly spinnable halogen-free flame-retardant nylon fiber, wherein the first step is halogen-free flame-retardant nylon masterbatch, the weight percentage of each component is: nylon chips (M3200, produced by Xinhui Meida Company, viscosity 3.2dl / g) 45%, cyclic phosphate (ANTIBLAZE 1045) 5%, melamine cyanurate 45%, of which, 90% of melamine cyanurate particle size is less than 5 microns, of which 50% of melamine cyanurate particle size is 1-2 microns, nanometer montmorillonite (surface treated with EBS, particle size is 50nm) 4%, antioxidant SEED 1%. After the above components are mixed, they are added to the co-rotating twin-screw extruder to extrude and granulate, and the rods are water-cooled and then pulled to pelletize. The temperature of the twin-screw extruder is set at 200°C-220°C-220°C-230°C ℃-230℃-230℃-240℃-230℃. The cooling water temperature is controlled at 70°C, and the halogen-free flame-retardant nylon masterbatch is obtained through melt ...

Embodiment 3

[0040]Preparation of highly spinnable halogen-free flame-retardant nylon fiber, wherein the first step is halogen-free flame-retardant nylon masterbatch, the weight percentage of each component is: nylon chips (M3200, produced by Xinhui Meida Company, viscosity 3.2dl / g) 48%, cyclic phosphate (ANTIBLAZE 1045) 7%, melamine cyanurate (GMS surface treatment) 42.9%, of which, 90% of melamine cyanurate particle size is less than 5 microns, of which 50% of melamine cyanurate The particle size of the urate is 1-2 microns, the nanometer glass microsphere (particle size is 100nm) is 0.1%, and the antioxidant SEED is 2%. After the above components are mixed, they are added to the co-rotating twin-screw extruder to extrude and granulate, and the rods are water-cooled and then pulled to pelletize. The temperature of the twin-screw extruder is set at 200°C-220°C-220°C-230°C ℃-230℃-230℃-240℃-230℃. The cooling water temperature is controlled at 80°C, and the halogen-free flame-retardant nylo...

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Abstract

The invention relates to a preparation method of highly-spinnable halogen-free flame-retardant nylon fibers, which comprises the following steps: performing blending and granulation of nylon slices, cyclic phosphates, melamine compounds, nanometer inorganic substances, and antioxidants in a double screw extruder to obtain a halogen-free flame-retardant nylon master batch, spinning the halogen-free flame-retardant nylon master batch with nylon slices into halogen-free flame-retardant nylon fibers through a melt spinning method. Compared with the prior art, the invention improves the dispersibility of the fire retardants and the compatibility of the polymers, and thus the product has good flame retardance; the spinnability of the nylon fibers is improved to a great extent; the invention has low cost, is industrialized; both halogen-free flame-retardant nylon aircraft seat covers and aviation carpet lines spun by the method of the invention pass FAR 25.853 cabin internal material flammability tests.

Description

technical field [0001] The invention relates to a method for preparing fibers, in particular to a method for preparing highly spinnable halogen-free flame-retardant nylon fibers. Background technique [0002] Nylon fiber is the first synthetic fiber to realize industrial production in the world. Although it is not considered a flammable fiber (limiting oxygen index LOI=22~24), the existence of molten drips when it burns can easily cause the spread of fire, which is very unfavorable for fire fighting and disaster relief. The fire caused by the fire of textiles or the spread of non-flame-retardant textiles accounts for 20% of fire accidents in my country in recent years. In recent years, the flame-retardant of textiles has become one of the fastest-growing fields of flame-retardant polymer materials. [0003] There are two methods for the production of flame-retardant fabrics. One is to carry out flame-retardant finishing on fabrics, that is, to combine flame retardants with ...

Claims

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Application Information

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IPC IPC(8): D01F6/90D01F1/07
Inventor 袁丽菊付常俊姚望田铁生
Owner 上海安凸塑料添加剂有限公司
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