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Polyacetylimine/polydiphenolic acid phenyl phosphate/sodium alginate three-component flame-retardant modified ramie fabric and preparation method thereof

A technology of polybisphenolic acid phenyl phosphate and bisphenolic acid phenyl phosphate is applied in the directions of plant fibers, textiles and papermaking, fiber processing, etc., and can solve problems such as restricting application expansion.

Active Publication Date: 2017-12-29
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, the common flammability disadvantages of ramie fibers and other natural fibers also restrict their application expansion to a certain extent.

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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  • Polyacetylimine/polydiphenolic acid phenyl phosphate/sodium alginate three-component flame-retardant modified ramie fabric and preparation method thereof
  • Polyacetylimine/polydiphenolic acid phenyl phosphate/sodium alginate three-component flame-retardant modified ramie fabric and preparation method thereof
  • Polyacetylimine/polydiphenolic acid phenyl phosphate/sodium alginate three-component flame-retardant modified ramie fabric and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Soak the ramie fabric in 0.3wt% KH550 solution for 2h, take it out and dry it in a blast dryer at 70°C for 10min. Soak KH550-treated ramie fabric in 0.5wt% SA solution for 5 minutes. Rinse with deionized water for 1 min, and dry in a blast oven at 70°C for 10 min. Then soak in 1.5wt% PEI solution, 1.5wt% poly(DPA-PDCP) solution and 1.5wt% PEI solution in sequence. The soaking time, cleaning and drying process are the same as those for assembling SA flame retardant coating. This is a four-layer ramie fabric for flame retardant finishing. Its preparation process is as figure 1 shown. The obtained ramie fabric is dried. The content of flame retardant coating was calculated as 3.10% by weighing the mass of ramie fabric before and after treatment. The analysis results of the sample by a thermogravimetric analyzer showed that the residual carbon content at 600°C under air conditions was 4.58%. The limiting oxygen index (LOI) of the sample was measured with an oxygen ind...

Embodiment 2

[0039]Soak the ramie fabric in 0.3wt% KH550 solution for 2h, take it out and dry it in a blast dryer at 70°C for 10min. Soak the KH550-treated ramie fabric in a poly(DPA-PDCP) solution with a mass fraction of 1.5wt% for 5 minutes. Rinse with deionized water for 1 min, and dry in a blast oven at 70°C for 10 min. Then soak in 1.5wt% PEI solution, 0.5wt% SA solution and 1.5wt% PEI solution in turn, the soaking time, cleaning and drying process are the same as the assembly poly(DPA-PDCP) flame retardant coating. This is a four-layer ramie fabric for flame retardant finishing. Its preparation process is as figure 1 shown. The obtained ramie fabric is dried. The content of flame retardant coating was calculated as 2.03% by weighing the mass of ramie fabric before and after treatment. The analysis results of the sample by a thermogravimetric analyzer showed that the residual carbon content at 600°C under air conditions was 2.36%. The limiting oxygen index of the sample was meas...

Embodiment 3

[0041] Soak the ramie fabric in 0.5wt% KH550 solution for 2h, take it out and dry it in a blast dryer at 90°C for 5min. The ramie fabric treated with KH550 was soaked in SA solution with a mass fraction of 1.0wt% for 5 minutes. Rinse with deionized water for 1 min, and dry in a blast oven at 90°C for 5 min. Then soak in 2.0wt% PEI solution, 2.0wt% poly(DPA-PDCP) solution and 2.0wt% PEI solution in sequence, the soaking time, cleaning and drying process are the same as assembling SA flame retardant coating. This is a four-layer ramie fabric for flame retardant finishing. Repeat this process until 5 four-layer flame retardant coatings are assembled on the surface of the ramie fabric. The preparation process is as follows: figure 1 shown. The obtained ramie fabric is dried. The content of flame retardant coating was calculated as 22.85% by weighing the mass of ramie fabric before and after treatment. The analysis results of the sample by a thermogravimetric analyzer showed t...

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Abstract

The invention provides a PEI (Polyacetylimine) / poly(DPA-PDCP) (Polydiphenolic Acid Phenyl Phosphate) / SA (Sodium Alginate) layer-by-layer self-assembled flame-retardant modified ramie fabric. A flame-retardant modification layer consists of 1-10 SA / PEI / poly(DPA-PDCP) / PEI layers or poly(DPA-PDCP) / PEI / SA / PEI layers. The preparation method of the ramie fabric comprises the following steps: soaking a ramie fabric in a KH550 solution, drying, soaking in an SA solution, a PEI solution, a poly(DPA-PDCP) solution and a PEI solution in sequence, performing flame-retardant coating assembling treatment, and cleaning and drying after each time of soaking; and repeating the process till 1-10 four-layer flame-retardant coatings are assembled on the surface of the ramie fabric. When the method is compared with a PEI / poly(DPA-PDCP) double-component flame retardant coating, the adsorption capacity of the fabric coating is greatly increased due to introduction of a third component SA, the assembling number can be reduced while the flame retardant modification effect is improved, the assembling treatment time is shortened to a certain extent, the flexibility and stability of the method are further improved, and the cost is lowered.

Description

technical field [0001] The invention relates to the technical field of flame-retardant finishing of ramie fiber and its fabric, in particular to a three-component flame-retardant modified ramie fabric of polyacetimide / polybisphenolic acid phenyl phosphate / sodium alginate and a preparation method thereof . Background technique [0002] As an important textile fiber, ramie fiber has unique characteristics that other natural fibers cannot match, such as good hygroscopicity, air permeability, anti-corrosion, anti-bacterial and anti-mildew. At the same time, thanks to its excellent mechanical properties, combined with the current demand for green and renewable resources, ramie fiber is also widely used in aerospace, automotive, electronics and construction other than textiles. However, the common flammability disadvantages of ramie fiber and other natural fibers also restrict its application expansion to a certain extent. Therefore, it is extremely necessary to carry out flame-...

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): D06M15/59D06M15/53D06M15/13D06M101/04
CPCD06M15/13D06M15/53D06M15/59D06M2101/04
Inventor 闫红强林爱程捷方征平
Owner NINGBO INST OF TECH ZHEJIANG UNIV ZHEJIANG
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