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Preparation method of flame-retardant modified ramie fabric

A ramie and fabric technology is applied in the field of preparation of flame-retardant modified ramie fabrics, which can solve the problems of poor thermal stability and easy combustion of plant fibers, and achieves low cost, reduced total heat release, high heat resistance and carbon residue. rate effect

Active Publication Date: 2016-04-20
NINGBO INST OF TECH ZHEJIANG UNIV ZHEJIANG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, plant fibers suffer from poor thermal stability and are easy to burn, which limit their practical applications.

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 flame-retardant modified ramie fabric
  • Preparation method of flame-retardant modified ramie fabric
  • Preparation method of flame-retardant modified ramie fabric

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Soak the ramie fabric in 0.5wt% KH550 solution for 2h, take it out and dry it in a blast dryer at 60°C for 15min. The ramie fabric treated with KH550 is soaked in the polybisphenolic acid phenyl phosphate solution with a mass fraction of 0.5% and the PEI solution with a mass fraction of 1.0%. Ramie fabric. Repeat this process until 30 double-layer flame-retardant coatings are assembled on the ramie fabric surface, and its preparation process is as follows: figure 1 shown. Gained ramie fabric (KH550-0.5%-30BL) is placed in use N 2 Blow dry on the quartz plate, then place it in a blast drying oven at 60°C for 15 minutes, and then place it in a drying dish for 10 hours. Dry in a blast dryer at 70°C until constant weight. The content of flame retardant coating was calculated as 0.87% by weighing the mass of ramie fabric before and after treatment. The analysis result of the sample by thermogravimetric analyzer showed that the residual carbon content of KH550-0.5%-30BL ...

Embodiment 2

[0035] Soak the ramie fabric in 1.0wt% KH550 solution for 1 hour, take it out and dry it in a blast dryer at 70°C for 10 minutes. The ramie fabric treated with KH550 is soaked in the polybisphenolic acid phenyl phosphate solution with a mass fraction of 1.0% and the PEI solution with a mass fraction of 1.0% in sequence, soaking for 5 minutes each time, which is a double-layer fabric for flame-retardant finishing. Ramie fabric. Repeat this process until 30 double-layer flame-retardant coatings are assembled on the ramie fabric surface, and its preparation process is as follows: figure 1 shown. Gained ramie fabric (KH550-1.0%-30BL) is placed in use N 2 Blow-dry the quartz plate, then place it in a 70°C blast drying oven for 10 minutes, and then place it in a drying dish for 8 hours. The content of flame retardant coating was calculated as 1.73% by weighing the mass of ramie fabric before and after treatment. The analysis result of the sample by thermogravimetric analyzer sho...

Embodiment 3

[0037] Soak the ramie fabric in 1.0wt% KH550 solution for 1 hour, take it out and dry it in an air dryer at 80°C for 5 minutes. The ramie fabric treated with KH550 is immersed in the polybisphenolic acid phenyl phosphate solution with a mass fraction of 2.0% and the PEI solution with a mass fraction of 1.0% in turn, soaking for 10 minutes each time, this is a double-layer fabric for flame-retardant finishing. Ramie fabric. Repeat this process until 30 double-layer flame-retardant coatings are assembled on the ramie fabric surface, and its preparation process is as follows: figure 1 shown. Gained ramie fabric (KH550-2.0%-30BL) is placed in use N 2 Blow-dry the quartz plate, then place it in an 80°C blast oven for 5 minutes, and place it in a desiccator for 7 hours. The content of flame retardant coating was calculated as 3.14% by weighing the mass of ramie fabric before and after treatment. The analysis result of the sample by thermogravimetric analyzer showed that the resi...

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 provides a preparation method of a flame-retardant modified ramie fabric. The method comprises the following steps of soaking a ramie fabric in a coupling agent solution for 1-2 hours, and taking out and drying the soaked ramie fabric; soaking the dried ramie fabric in a poly-diphenolic acid phenyl phosphate ester solution for 5-10 minutes, and washing the soaked ramie fabric 1-3 times with deionized water; drying the washed ramie fabric, soaking the dried ramie fabric in a polyethyleneimine solution for 5-10 minutes, and then washing the soaked ramie fabric for 5-10 minutes; cleaning the soaked 1-3 times with the deionized water, and drying the cleaned ramie fabric; and repeating the process until the required layer number is achieved, and then performing drying, so as to obtain the objective namely the flame-retardant modified ramie fabric. The preparation method is simple in technological operation, flexible, and good in stability, and the flame retardancy of the ramie fabric can be effectively improved.

Description

technical field [0001] The invention relates to the technical field of flame-retardant finishing of ramie fibers and fabrics thereof, in particular to a preparation method of flame-retardant modified ramie fabrics. Background technique [0002] As a natural cellulose fiber, ramie has many advantages, such as low price, light weight and environmental friendliness. The tensile strength of ramie fiber is 850-900N / mm 2 , much higher than other natural fibers such as flax and jute, almost equal to glass fiber. As a composite material reinforcement, ramie fiber has been widely studied and used in systems such as polylactic acid, polypropylene, epoxy resin, phenolic resin and benzoxazine resin. However, plant fibers suffer from poor thermal stability and are easy to burn, which limit their practical applications. Therefore, the flame-retardant modification of ramie fiber or fabric and its research on reinforced composites have attracted people's attention. [0003] Layer-by-lay...

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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IPC IPC(8): D06M15/667D06M15/61D06M101/06
CPCD06M15/61D06M15/667D06M2101/06D06M2200/30
Inventor 闫红强李楠楠方征平
Owner NINGBO INST OF TECH ZHEJIANG UNIV ZHEJIANG
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