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Flame retarding method for cotton fabric

A technology of cotton fabric and solution, which is applied in the field of cotton fabric flame retardancy, can solve the problems of limited application range of cotton fabric, and achieve the effect of good washing resistance

Inactive Publication Date: 2020-05-08
YANCHENG INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the main component of cotton fabric is flammable cellulose, it is greatly restricted in the application process, which limits the application range of cotton fabric.

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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  • Flame retarding method for cotton fabric
  • Flame retarding method for cotton fabric
  • Flame retarding method for cotton fabric

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Structural formula of p-ester-s-triazine (CYPA):

[0034]

[0035] Pentaerythritol phosphate amine salt (PEPAS) structural formula:

[0036]

[0037] Preparation contains the solution of PEPAS 300g / L and CYPA 125g / L, regulates pH to 8.5, pure cotton fabric (woven fabric, 112g m -2 , OCF) at a bath ratio of 1:50, treated at 60°C for 30 minutes, raised the temperature to 90°C, adjusted the pH to 10, continued to heat in a water bath for 30 minutes, took it out, washed twice with cold water, and dried at 105°C dry, the treated sample TCF is obtained;

[0038] Take 35mL of sodium silicate, pour it into a 500mL beaker, dilute it with 150mL of deionized water, raise the temperature of the sodium silicate aqueous solution to 70°C, add 0.4g of stearic acid, and adjust the pH of the solution to 7.5, and transfer the prepared solution to high temperature In the autoclave, the sample TCF was immersed in it at a bath ratio of 1:50. After reacting at 160°C for 12 hours, the ...

Embodiment 2

[0060] The reaction temperature in Example 1 was changed to: react at 140°C for 12 hours, and the LOI of the final sample obtained was 29.9, 26.7 after 20 washes, and 23.2 after 50 washes.

[0061] The reaction temperature in Example 1 was changed to: react at 200° C. for 12 hours, and the mechanical strength of the prepared sample was 10.78-13.51 MPa.

Embodiment 3

[0063] Take 35mL of sodium silicate aqueous solution, pour it into a 500mL beaker, dilute with 150mL of deionized water, heat the solution to 70°C, add 0.4g of stearic acid, and adjust the pH of the solution to 5, and the remaining preparation methods are the same as in Example 1 , the experimental results show that particles with an average particle size of 400nm are deposited on the surface of the cellulose, which is too large. The measured LOI of the final sample is 27.6, 24.8 after 20 times of washing, and 22.0 after 50 times of washing.

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Abstract

The invention discloses a flame retarding method for cotton fabric. The flame retarding method comprises the steps of preparing PEPAS and CYPA into a solution, adjusting the pH value to be alkaline, immersing the cotton fabric, performing heating, adjusting the pH value, performing washing and performing drying to obtain a sample TCF; and heating a sodium silicate aqueous solution, adding stearicacid, adjusting the pH value to be alkalescent, immersing the TCF, performing heating for reaction, performing washing and performing drying to obtain a TCFSi sample. No toxic substances are producedin the preparation process, and the preparation method is green and environment-friendly. After finishing, the limited oxygen index of the cotton fabric can be improved to 31.8 from the original 17.8to the maximum, and the cotton fabric has good laundering durability.

Description

technical field [0001] The invention belongs to the technical field, and in particular relates to a cotton fabric flame-retardant method. Background technique [0002] Cotton fabrics are popular for their high quality and low price, and are widely used in daily wear and building materials. However, because the main component of cotton fabric is flammable cellulose, it is subject to greater restrictions in the application process, which limits the application range of cotton fabric. The combustion of cotton fabric is due to thermal cracking and oxidative cracking in the air, forming L-glucose monomer and producing flammable gas. The heat released during the combustion process further decomposes the cellulose, forming a cycle process until the fabric is completely burned. burn. [0003] The present invention uses pentaerythritol phosphate ammonium salt as the source of phosphorus and nitrogen, uses nano-silicon dioxide as the source of silicon, uses water bath heating and hy...

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): D06M13/292D06M13/358D06M11/79D06M101/06
CPCD06M11/79D06M13/292D06M13/358D06M2101/06D06M2200/30
Inventor 周天池何雪梅郑成辉
Owner YANCHENG INST OF TECH