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Preparation method of halogen-free flame retarding PETG composite fibers

A composite fiber and flame-retardant fiber technology, which is applied in the manufacture of fire-retardant and flame-retardant filaments, fiber processing, and chemical characteristics of fibers. , The effect of stable and reliable product quality

Inactive Publication Date: 2018-11-20
新凤鸣集团股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, PETG fiber is a flammable fiber, and it still has the problem of insufficient flame retardancy, which cannot meet the requirements of flame retardancy in some fields, which will limit its application in the field of high flame retardancy. Combustion modification is very necessary

Method used

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  • Preparation method of halogen-free flame retarding PETG composite fibers
  • Preparation method of halogen-free flame retarding PETG composite fibers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The preparation method of a halogen-free flame-retardant PETG composite fiber described in this embodiment described in this embodiment, the specific steps are as follows:

[0021] (1) Preparation of halogen-free flame retardant masterbatch

[0022] Add PETG polyester chips to the main feeding port of the twin-screw extruder, add the halogen-free flame retardant, compatibilizer, antioxidant, lubricant, and light stabilizer into the spherical high-efficiency dynamic mixer and mix evenly. After being fully mixed and uniform, the material is discharged into the side feeding port of the twin-screw extruder, and melted and extruded by the twin-screw extruder to obtain the halogen-free flame-retardant masterbatch. The viscosity of the halogen-free flame retardant masterbatch is 0.60dl / g. Wherein, the PETG polyester chip mass fraction is 80%; the halogen-free flame retardant is a compound of polyphenylsulfone diphenyl phosphonate oligomer and polydimethylsiloxane with a mass ...

Embodiment 2

[0030] The preparation method of a halogen-free flame-retardant PETG composite fiber described in this example is different from that in Example 1, and the others are the same as in Example 1.

[0031] Preparation of Halogen-free Flame Retardant Spun Fiber with "Y" Shape Cross Section

[0032] Inject the halogen-free flame retardant masterbatch prepared in step (1) into the screw extruder with an online adding device, and at the same time add alkali-free glass fiber from the side feeding port 1 and side feeding port 2 of the twin-screw extruder PETG polyester chips, the three are melted and mixed for extrusion, the melt is metered by a metering pump, sent to the spinneret assembly for filtration, extruded, and cooled by ring blowing or side blowing to obtain primary fibers; wherein, the spinneret hole is "Y "Shaped cross-section, and arranged in a rhombus on the spinneret. Wherein, the mass fraction of the halogen-free flame-retardant masterbatch is 35%; the alkali-free glass...

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Abstract

The invention relates to the technical field of production of polyester fibers, in particular to a preparation method of halogen-free flame retarding PETG composite fibers. The preparation method comprises the specific steps of (1) preparation of halogen-free flame retarding master batches, (2) preparation of halogen-free flame retarding nascent fibers with the Y-shaped sections, and (3) winding forming of the halogen-free flame retarding fibers. The obtained halogen-free flame retarding PETG composite fibers have significant effects in flame retardance and heat resistance, the limit oxygen index (LOI) of the halogen-free flame retarding PETG composite fibers can be 29, and the halogen-free, low-smoke and environment-friendly flame retarding requirements are met. In addition, the sectionsof the fibers are designed in a Y shape, so that the fibers can absorb, deliver, diffuse and volatilize water rapidly, and obtained products are soft and comfortable and have the moisture absorption and quick-drying effects.

Description

technical field [0001] The invention relates to the technical field of polyester fiber production, in particular to a method for preparing a halogen-free flame-retardant PETG composite fiber. Background technique [0002] In recent years, with the continuous development of flame retardant materials and the continuous expansion of the market demand for flame retardant materials, people's requirements for flame retardant materials have also continued to increase. Traditional flame retardant materials widely use halogen-containing polymers or flame-retardant mixtures of halogen-containing flame retardants. Once a fire occurs, due to thermal decomposition and combustion, a large amount of smoke and toxic corrosive gases will be produced, which hinders Firefighting and evacuation, and will corrode instruments and equipment. At present, the general development trend of flame retardant materials is halogen-free, low toxicity, low smoke, durability, low cost and environmental prote...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D13/00D01D5/253D01D5/30D01F8/14D01F8/18D01F1/07
CPCD01D5/253D01D5/30D01D13/00D01F1/07D01F8/14D01F8/18
Inventor 刘春福鲁玉瑶岳花林赵春财崔利余宗哲张孟丽郑伟付明郭佳佳吴倩倩
Owner 新凤鸣集团股份有限公司
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