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Preparation method of special flame-retardant color spun polyester filament yarn for high-speed rail

A polyester filament and color spinning technology, which is applied in the manufacture of fire-resistant and flame-retardant filaments, adding pigments to spinning liquid, and single-component polyester artificial filaments. It can solve the problems of poor flame retardancy of polyester fibers, etc. , to achieve flame retardancy and thermal stability, improve stability, and purify the air well

Pending Publication Date: 2021-12-10
ZHEJIANG WELONG NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems in the prior art, the present invention provides a preparation method of flame-retardant dyed polyester filaments for high-speed rail, which solves the problem of poor flame retardancy of existing polyester fibers, and utilizes the combination of environmentally friendly color paste and silane coupling agent Pre-mixed to achieve flame retardancy and thermal stability of environmentally friendly colorants, greatly improving the stability of filaments

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
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  • Preparation method of special flame-retardant color spun polyester filament yarn for high-speed rail
  • Preparation method of special flame-retardant color spun polyester filament yarn for high-speed rail

Examples

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Comparison scheme
Effect test

Embodiment 1

[0023] A method for preparing flame-retardant color-spun polyester filament special for high-speed rail, comprising the following steps:

[0024] Step 1, environmental protection toner pretreatment: Stir titanium dioxide and aminotriethoxysilane at constant temperature until completely mixed to obtain prefabricated environmental protection toner; the mass ratio of the environmental protection toner to silane coupling agent is 3:2, constant temperature The stirring temperature is 125°C, and the mixing time is 45 minutes;

[0025] Step 2, preparation of flame-retardant masterbatch: adding phosphorus-based flame-retardant copolyester and nano calcium stearate to prefabricated environmental protection toner, mixing and stirring, then extruding and melting through a screw extruder, cooling, pelletizing, Sieve and mix, dry, and make flame-retardant masterbatch; The addition of described phosphorus-based flame-retardant copolyester powder is 2.3 times of prefabricated environment-fri...

Embodiment 2

[0028] A method for preparing flame-retardant color-spun polyester filament special for high-speed rail, comprising the following steps:

[0029] Step 1, environmental protection toner pretreatment: stir carbon black and aminotriethoxysilane at constant temperature until completely mixed to obtain prefabricated environmental protection toner; the mass ratio of the environmental protection toner to silane coupling agent is 3:1, constant temperature The stirring temperature is 128°C, and the mixing time is 50 minutes;

[0030] Step 2, preparation of flame-retardant masterbatch: adding phosphorus-based flame-retardant copolyester and nano calcium stearate to prefabricated environmental protection toner, mixing and stirring, then extruding and melting through a screw extruder, cooling, pelletizing, Sieve and mix, dry, and make flame-retardant masterbatch; The addition of described phosphorus-based flame-retardant copolyester powder is 3.0 times of prefabricated environment-friendl...

Embodiment 3

[0033] A method for preparing flame-retardant color-spun polyester filament special for high-speed rail, comprising the following steps:

[0034] Step 1, environmental protection toner pretreatment: Stir iron blue and aminotriethoxysilane at a constant temperature until completely mixed to obtain a prefabricated environmental protection toner; the mass ratio of the environmental protection toner to silane coupling agent is 2:1, constant temperature The stirring temperature is 127°C, and the mixing time is 48 minutes;

[0035] Step 2, preparation of flame-retardant masterbatch: adding phosphorus-based flame-retardant copolyester and nano-calcium stearate to the prefabricated environmentally friendly toner, mixing and stirring, then extruding and melting through a screw extruder, cooling, and pelletizing. Sieve and mix, dry, and make flame-retardant masterbatch; The addition of described phosphorus-based flame-retardant copolyester powder is 2.8 times of prefabricated environmen...

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
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Abstract

The invention discloses a preparation method of special flame-retardant color spun polyester filament yarn for high-speed rail. The method comprises the following steps of 1, pretreating environment-friendly toner: stirring the environment-friendly toner and a silane coupling agent at a constant temperature until the environment-friendly toner and the silane coupling agent are completely mixed to obtain preset environment-friendly toner; 2, preparing flame-retardant master batch: adding phosphorus-based flame-retardant copolyester powder and nano calcium stearate into the preset environment-friendly toner, performing mixing and stirring, then performing extruding and melting by a screw extruder, performing cooling, performing dicing, performing sieving and mixing, and performing drying to obtain the flame-retardant master batch; and 3, preparing the flame-retardant color spun polyester filament yarn: mixing and drying phosphorus-based flame-retardant copolyester chips and the flame-retardant master batch, performing extruding, melting and spinning by using a screw extruder, then performing setting by using a heat setting box, and then performing cooling, winding and falling in a barrel to prepare a flame-retardant polyester fiber precursor. The problem that existing polyester fibers are poor in flame retardance is solved, the flame retardance and thermal stability of environment-friendly color paste are achieved through premixing of the environment-friendly color paste and the silane coupling agent, and the stability of the filament yarn is greatly improved.

Description

technical field [0001] The invention belongs to the field of fabrics, and in particular relates to a method for preparing flame-retardant color-spun polyester filaments specially used for high-speed railways. Background technique [0002] With the continuous improvement of people's living standards, the requirements for textiles are getting higher and higher, and the application fields are becoming more and more extensive. Fires caused by textiles, causing major personal casualties and huge economic losses have occurred frequently. The flame retardancy of textiles plays an important role in ensuring the safety of property and life and reducing the occurrence of fire accidents. The application and standardization of flame retardant products in public places has always been a concern of the industry. The application of qualified flame retardant products in public places can reduce the fire load, reduce fire hazards and improve fire safety. Many domestic scientific research i...

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
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/92D01F1/07D01F1/04
CPCD01F6/92D01F1/07D01F1/04
Inventor 沈顺华张井东
Owner ZHEJIANG WELONG NEW MATERIAL
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