CN114016309A - Dyed flame-retardant cotton fabric and one-bath one-step processing method thereof - Google Patents

Dyed flame-retardant cotton fabric and one-bath one-step processing method thereof Download PDF

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CN114016309A
CN114016309A CN202111336160.XA CN202111336160A CN114016309A CN 114016309 A CN114016309 A CN 114016309A CN 202111336160 A CN202111336160 A CN 202111336160A CN 114016309 A CN114016309 A CN 114016309A
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flame
retardant
cotton fabric
dyeing
dyed
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王鹏
肖航
安虹屹
茅涛
涂江
勾婷婷
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Southwest University
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Southwest University
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
    • D06P1/38—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using reactive dyes
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
    • D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
    • D06P1/64—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing low-molecular-weight organic compounds without sulfate or sulfonate groups
    • D06P1/642—Compounds containing nitrogen
    • D06P1/6421—Compounds containing nitrile groups
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
    • D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
    • D06P1/64—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing low-molecular-weight organic compounds without sulfate or sulfonate groups
    • D06P1/642—Compounds containing nitrogen
    • D06P1/649—Compounds containing carbonamide, thiocarbonamide or guanyl groups
    • D06P1/6491—(Thio)urea or (cyclic) derivatives
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
    • D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
    • D06P1/673—Inorganic compounds
    • D06P1/67333—Salts or hydroxides
    • D06P1/6735—Salts or hydroxides of alkaline or alkaline-earth metals with anions different from those provided for in D06P1/67341
    • D06P1/67366—Phosphates or polyphosphates
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P3/00—Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
    • D06P3/58—Material containing hydroxyl groups
    • D06P3/60—Natural or regenerated cellulose
    • D06P3/66—Natural or regenerated cellulose using reactive dyes

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  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Coloring (AREA)

Abstract

The invention discloses a dyed flame-retardant cotton fabric and a one-bath one-step processing method thereof, and relates to the technical field of textile dyeing and finishing. The invention uses phosphonic acid group reactive dye, water-soluble ammonium polyphosphate, urea and dicyandiamide to prepare a one-bath dyeing flame-retardant finishing liquid, and carries out dyeing flame-retardant one-step processing on cotton fabrics by a padding-baking method. The flame retardant selected by the invention is low-price water-soluble ammonium polyphosphate, formaldehyde is not released in the using process, and the processing cost is low. The phosphonic acid group type reactive dye and the water-soluble ammonium polyphosphate can chemically react with cotton fabrics in the finishing process, the prepared dyed flame-retardant cotton fabrics are high in color fastness to washing, good in flame-retardant durability and environment-friendly, and the one-bath one-step processing method is short in process flow, energy-saving, emission-reducing, consumption-reducing, high in process adaptability and wide in application prospect.

Description

Dyed flame-retardant cotton fabric and one-bath one-step processing method thereof
Technical Field
The invention belongs to the technical field of textile dyeing and finishing, and particularly relates to a dyed flame-retardant cotton fabric and a one-bath one-step processing method thereof.
Background
The cotton fabric has the characteristics of excellent moisture absorption and air permeability, softness and comfort, natural skin friendliness and the like, and is widely applied to the fields of clothes, home textiles, automotive interiors and the like. The dyeing of the cotton fabric can endow the cotton fabric with different colors, styles and expression forms, and caters to the aesthetic interests of people. In addition, the cotton fabric belongs to flammable fabrics, the limit oxygen index value is only about 18%, the cotton fabric is easy to ignite in the air, and a fire disaster is easily caused, so that property loss and casualties are caused, and the application field of the cotton fabric is limited.
Dyeing of cotton fabrics can be carried out by dip dyeing or pad dyeing methods using direct, reactive, vat dyes and the like. The direct dye dyeing method is simple and convenient, but has poor color fastness to washing. The vat dye has high dyeing fastness, but the process flow is longer. The reactive dye has bright color, complete chromatogram, convenient use, lower cost and good color fastness to washing, and has become the main dye for dyeing the cotton fabrics at present. Among the reactive dyes, phosphonic acid-based reactive dyes are reactive dyes containing phosphonic acid groups in the molecular structure, and can be covalently bonded with hydroxyl groups on cotton fibers under acidic conditions at high temperature in the presence of dicyandiamide.
The flame-retardant finishing method of the cotton fabric mainly comprises a dipping method, a layer-by-layer self-assembly method, a sol-gel method, a chemical modification method and the like. The impregnation method is simple to operate, has low cost, has small influence on the inherent performance of the fabric, but has poor durability. The flame-retardant cotton fabric prepared by a layer-by-layer self-assembly method and a sol-gel method has improved flame-retardant performance, but has great influence on the hand feeling, softness and comfort of the fabric, and the flame-retardant performance is not durable. The chemical modification method is to endow the cotton fabric with durable flame retardant effect by the chemical reaction of reactive flame retardant and active groups in cotton fiber molecules, and has become a research hotspot in academia and industry.
At present, widely used reactive flame retardants for cotton at home and abroad areHerst® FPK8002、Proban、 Pyrovatex CP and JLSUN CP-And the like. The flame retardant can be used independently or cooperatively with the poly-methylol melamine resin to endow the cotton fabric with durable flame retardant performance, and the hand feeling of the finished fabric is not changed greatly. However, the flame-retardant cotton fabric has the problem of formaldehyde release in the process of taking, and is harmful to human health and ecological environment. The water-soluble ammonium polyphosphate is low in price, non-toxic and tasteless, has a strong chelating effect on metal ions, and is commonly used as a fertilizer at present. The molecular structure of the flame retardant is high in flame retardant elements (phosphorus and nitrogen), and phosphoric acid groups are generated by heating and can be chemically grafted to cotton fabrics under the catalytic action of dicyandiamide, so that the cotton fabrics are endowed with durable flame retardant effect.
Currently, due to inconsistent processing conditions of dyeing and flame-retardant finishing, the preparation of dyed flame-retardant cotton fabric usually needs two steps of bath and two steps, namely dyeing and then flame-retardant. The process has long process flow, high water and energy consumption, large pollution discharge pressure and high production and processing cost, and is increasingly limited in the actual dyeing and finishing production. In addition, flame retardant processing is often employedProban、Pyrovatex CPAnd the commercial flame retardant, the finishing process and the finishing cotton fabric have the problem of formaldehyde release. Therefore, the development of the environment-friendly dyed flame-retardant cotton fabric and the matched short-flow processing technology thereof has important practical significance at the present day that energy conservation and emission reduction are realized and the green environment-friendly sound is rising day by day.
Disclosure of Invention
The invention aims to provide a dyed flame-retardant cotton fabric and a bath one-step processing method thereof, which aim to solve the existing problems: the process flow of dyeing first and then flame retarding is long, the water and energy consumption is high, the pollution discharge pressure is high, and the production and processing cost is high; the flame-retardant cotton fabric has the problem of formaldehyde release.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the dyed flame-retardant cotton fabric is treated by a dyed flame-retardant finishing liquid, and the dyed flame-retardant finishing liquid comprises the following raw materials in parts by weight:
7 to 15 percent of water-soluble ammonium polyphosphate;
0.1 to 3 percent of phosphonic acid group type reactive dye;
0-3% of urea;
2 to 5 percent of dicyandiamide.
Further: the processing method of the dyed flame-retardant cotton fabric comprises the steps of soaking the cotton fabric in the dyed flame-retardant finishing liquid at 40-70 DEGoC, treating for 10-30 min, taking out, soaking for two times and rolling for two times, wherein the rolling residual rate is 70-150%, and the rolling residual rate is 170-200%oC, baking for 3-6 min, washing with water and drying.
Further: the phosphonic acid group type reactive dye is reactive yellow P-4G and/or reactive navy blue P-3GD and/or reactive red P-2B.
A one-bath one-step processing method of a dyed flame-retardant cotton fabric comprises the following steps:
preparing a dyeing flame-retardant finishing liquid according to the weight part ratio;
soaking a cotton fabric in the dyeing flame-retardant finishing liquid for treatment, and carrying out two-soaking and two-rolling;
baking treatment;
and (5) washing and drying.
Further: the method comprises the following steps of soaking cotton fabrics in the dyeing flame-retardant finishing liquid for treatment, wherein the treatment mainly comprises the following steps:
the weight ratio of the cotton fabric to the dyeing flame-retardant finishing liquid is as follows: 1: 5-20.
Further: wherein, soaking treatment mainly includes:
in the range of 40 to 70oC, soaking for 10-30 min.
Further: wherein the rolling residual rate of the two-dipping and two-rolling is 70-150%.
Further: the baking treatment mainly comprises the following steps:
at 170-200 deg.CoAnd C, baking for 3-6 min.
The invention has the following beneficial effects:
(1) the one-bath one-step processing process flow of the dyed flame-retardant cotton fabric is short, energy is saved, emission is reduced, consumption is reduced, and process adaptability is strong.
(2) The flame retardant selected by the invention is low-price water-soluble ammonium polyphosphate, formaldehyde is not released in the using process, and the processing cost is low.
(3) The phosphonic acid group type reactive dye and the water-soluble ammonium polyphosphate can chemically react with cotton fabrics in the finishing process to generate covalent bonds, and the phosphonic acid group type reactive dye has high color fastness to washing and good flame retardant durability.
(4) The dyed flame-retardant cotton fabric has a high limiting oxygen index reaching 27-36%, and is self-extinguished after being away from fire in a vertical combustion test process. The limiting oxygen index after 20 washes is greater than 25%, and the limiting oxygen index after 50 washes is greater than 22%.
(5) The dyed flame-retardant cotton fabric does not release formaldehyde in the subsequent taking process, and is ecological and environment-friendly.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 shows the chemical structures of water-soluble ammonium polyphosphate, reactive red P-2B, reactive yellow P-4G, and reactive navy blue P-3 GD;
FIG. 2 is a schematic diagram of the reaction of water-soluble ammonium polyphosphate, phosphonic acid-based reactive dye and cotton fabric;
FIG. 3 is a video screenshot of a pure cotton fabric and a dyed flame retardant cotton fabric of example 1 before and after washing in a vertical burning test process;
FIG. 4 is a graph showing the thermogravimetric curves of the pure cotton fabric and the dyed flame-retardant cotton fabric of example 3 in nitrogen;
FIG. 5 is a scanning electron microscope image of carbon residue after a vertical burning test of the dyed flame-retardant cotton fabric in example 5 of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention relates to a dyed flame-retardant cotton fabric and a bath one-step processing method thereof, which comprises the following specific embodiments:
example 1:
(1) preparing one-bath dyeing flame-retardant finishing liquid
Respectively adding water-soluble ammonium polyphosphate, active yellow P-4G (molecular formula shown in figure 1, one of phosphonic acid-based active dyes), urea and dicyandiamide into water, heating, stirring and dissolving to prepare 300G of dyeing flame-retardant finishing liquid containing 11% of water-soluble ammonium polyphosphate, 3% of active yellow P-4G, 3% of urea and 5% of dicyandiamide.
(2) Dyeing flame-retardant one-step processing of cotton fabric
Soaking 50 g of cotton fabric in the finishing liquid to 50 DEGoC treating for 30 min, taking out, soaking for two times and rolling for two times, controlling the rolling residual rate to be about 150 percent at 180 percentoAnd C, baking for 5 min, washing and drying to obtain the dyed flame-retardant cotton fabric.
Here, the two-dipping and two-rolling referred to herein are conventional techniques in the art, and are embodied as follows: and soaking the cotton fabric by the finishing liquid twice and rolling the cotton fabric by rollers twice so as to uniformly distribute the dye and the fire retardant on the cotton fabric.
The reaction between water-soluble ammonium polyphosphate, phosphonic acid-based reactive dye and cotton fabric is shown in figure 2.
The K/S value of the dyed flame-retardant cotton fabric is 13.34, and the limiting oxygen index value is 32.5%. After 20 washes, the K/S value was 12.40 and the limiting oxygen index value was 29.2%. After 50 times of washing, the K/S value is 11.24, and the limiting oxygen index value is 24.1 percent, which shows that the dyed flame-retardant cotton fabric has high color fastness to washing and good flame-retardant durability.
FIG. 3 is a video screenshot of a pure cotton fabric and a dyed flame retardant cotton fabric before and after washing in a vertical burn test process. As can be seen from the figure, the pure cotton fabric is quickly ignited in the vertical burning test process, the flame spread is fast until the pure cotton fabric is burnt out, and no carbon residue exists. The dyed flame-retardant cotton fabric can not be ignited, and after being washed for 20 times, the dyed flame-retardant cotton fabric is self-extinguished after leaving fire in the vertical combustion test process, so that the flame-retardant durability is high. After 50 times of washing, in the vertical burning test process, compared with pure cotton fabrics, the burning speed is obviously slowed down, and the carbon frame is completely kept.
Example 2:
(1) preparing one-bath dyeing flame-retardant finishing liquid
Adding water-soluble ammonium polyphosphate, active yellow P-4G, urea and dicyandiamide into water respectively, heating, stirring and dissolving to prepare 400G of dyeing flame-retardant finishing liquid containing 15% of water-soluble ammonium polyphosphate, 0.5% of active yellow P-4G, 3% of urea and 5% of dicyandiamide.
(2) Dyeing flame-retardant one-step processing of cotton fabric
50 g of cotton fabric is soaked in the finishing liquid to 60oC treating for 20 min, taking out, soaking for two times and rolling for two times, controlling the rolling residual rate to be about 110%, and controlling the rolling residual rate to be 175%oAnd C, baking for 5 min, washing and drying to obtain the dyed flame-retardant cotton fabric.
The K/S value of the dyed flame-retardant cotton fabric is 5.42, the limiting oxygen index value is 35.9 percent, and the dyed flame-retardant cotton fabric is self-extinguished after being away from fire in the vertical combustion test process. After 20 washes, the K/S value was 5.13, the limiting oxygen index value was 32.2%, and the vertical burn test was self-extinguishing when left from the fire. After 50 times of washing, the K/S value is 4.97, the limiting oxygen index value is 25.2%, the flame spreading speed is slow in the vertical combustion test process, the carbon frame cannot be self-extinguished, and the carbon frame is kept complete.
Example 3:
(1) preparing one-bath dyeing flame-retardant finishing liquid
Respectively adding water-soluble ammonium polyphosphate, active navy blue P-3GD (with a molecular formula shown in figure 1, one of phosphonic acid-based reactive dyes), urea and dicyandiamide into water, heating, stirring and dissolving to prepare 750 g of dyeing flame-retardant finishing liquid containing 10% of water-soluble ammonium polyphosphate, 0.5% of active navy blue P-3GD, 1% of urea and 3% of dicyandiamide.
(2) Dyeing flame-retardant one-step processing of cotton fabric
50 g of cotton fabric was soaked in the above-mentioned finishing liquor at 70 deg.foC treating for 10 min, taking out, soaking for two times and rolling for two times, controlling the rolling residual rate to be about 120 percent at 190 percentoAnd C, baking for 4 min, washing and drying to obtain the dyed flame-retardant cotton fabric.
The K/S value of the dyed flame-retardant cotton fabric is 5.27, the K/S value is 5.06 after 20 times of washing, and the K/S value is 4.91 after 50 times of washing, which shows that the dyed flame-retardant cotton fabric has high color fastness to washing. The limit oxygen index value of the dyed flame retardant cotton fabric was 31.6% and it was not ignited during the vertical burn test. After 20 washes, the limiting oxygen index value was 28.0%, self-extinguishing away from the fire during the vertical burn test. After 50 times of washing, the limiting oxygen index value is 23.8%, compared with pure cotton fabric, the combustion speed is obviously slowed down, and the carbon frame is kept intact.
FIG. 4 is a thermogravimetric curve of pure cotton fabric and dyed flame-retardant cotton fabric in nitrogen. As can be seen from the figure, compared with pure cotton fabric, the degradation of the dyed flame-retardant cotton fabric is advanced, and the temperature of 10 percent weight loss is only 266 percentoC. However, dyeing flame retardant cotton fabric at 600oThe carbon residue rate of C is 38.2%, which is far higher than 6.5% of that of pure cotton fabric, thus indicating that the flame retardant finishing can promote the carbon formation of the cotton fabric and improve the flame retardant property thereof.
Example 4:
(1) preparing one-bath dyeing flame-retardant finishing liquid
Adding water-soluble ammonium polyphosphate, active navy blue P-3GD, urea and dicyandiamide into water respectively, heating, stirring and dissolving to prepare 500 g of dyeing flame-retardant finishing liquid containing 8% of water-soluble ammonium polyphosphate, 2% of active navy blue P-3GD, 1% of urea and 2% of dicyandiamide.
(2) Dyeing flame-retardant one-step processing of cotton fabric
Soaking 50 g of cotton fabric in the finishing liquid to 50 DEGoC treating for 20 min, taking out, soaking for two times and rolling for two times, controlling the rolling residual rate to be about 80%, and controlling the rolling residual rate to be 170%oAnd C, baking for 6 min, washing and drying to obtain the dyed flame-retardant cotton fabric.
The K/S value of the dyed flame-retardant cotton fabric is 8.58, and the limiting oxygen index value is 27.6%. After 20 washes, the K/S value was 8.10 and the limiting oxygen index value was 25.5%. After 50 washes, the K/S value was 7.71 and the limiting oxygen index value was 22.7%.
Example 5:
(1) preparing one-bath dyeing flame-retardant finishing liquid
Adding water-soluble ammonium polyphosphate, active red P-2B (molecular formula shown in figure 1, which is one of phosphonic acid-based active dyes), urea and dicyandiamide into water respectively, heating, stirring and dissolving to obtain 1000 g of dyeing flame-retardant finishing liquid containing 12% of water-soluble ammonium polyphosphate, 2% of active red P-2B, 2% of urea and 4% of dicyandiamide.
(2) Dyeing flame-retardant one-step processing of cotton fabric
Soaking 50 g of cotton fabric in the finishing liquid to 50 DEGoC treating for 30 min, taking out, soaking for two times and rolling for two times, controlling the rolling residual rate to be about 120 percent at 185 percentoAnd C, baking for 4 min, washing and drying to obtain the dyed flame-retardant cotton fabric.
The K/S value of the dyed flame-retardant cotton fabric is 11.38, and the limiting oxygen index value is 32.0%. After 20 washes, the K/S value was 10.32, the limiting oxygen index value was 28.8%, and the vertical burn test was self-extinguishing when left from the fire. After 50 times of washing, the K/S value is 9.81, the limiting oxygen index value is 24.5 percent, the vertical combustion test process cannot be self-extinguished away from the fire, but the combustion speed is obviously slowed down.
FIG. 5 is a scanning electron microscope image of carbon residue after a vertical combustion test of a dyed flame-retardant cotton fabric. As can be seen from the figure, the dyed flame-retardant cotton fabric still completely retains the prior organizational structure of the fabric after being burnt, and the surface of the carbon residue has a plurality of convex bubbles, thereby conforming to the expansion flame-retardant mechanism. Phosphorus-containing components in the dye and the flame retardant generate phosphoric acid compounds during combustion, and the matrix is promoted to form carbon. The nitrogen-containing component decomposes to produce ammonia gas, which expands the carbon layer on the surface of the substrate to produce convex bubbles.
The test method of the invention comprises the following steps:
and (3) vertical burning performance test, namely performing vertical burning performance test on the cotton fabric before and after the treatment according to the test standard GB/T5455-2014.
Limiting oxygen index test: the cotton fabrics before and after conditioning were subjected to a limiting oxygen index test according to test standard GB/T5454-1997.
Thermogravimetric analysis test: thermogravimetric analysis is carried out on the cotton fabric before and after the finishing by adopting a TG 209F 3 type thermogravimetric analyzer. The test temperature range is 30-700 deg.CoC, nitrogen atmosphere, temperature rising speed of 20oC/min。
K/S value test: color measuring and matching instrument using Datacolor 650 computer, light source D65, 10oLower view angleAnd testing the K/S value of the dyed flame-retardant cotton fabric.
And (3) testing flame retardant durability: preparing 0.15% 1993 WOB standard cleaning solution according to AATCC 61-2013 standard, adding dyed flame-retardant cotton fabric and stainless steel balls, and soaping at 49 DEG CoC, 45 minutes of washing is equivalent to 5 ordinary washes. And testing the flame retardant property of the washed dyed flame retardant cotton fabric, and evaluating the flame retardant durability of the dyed flame retardant cotton fabric.
And (3) observing the microscopic morphology of the carbon residue: and observing the microscopic morphology of the carbon residue of the dyed flame-retardant cotton fabric after combustion by adopting an S-4800 scanning electron microscope, and performing metal spraying treatment before testing.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims (7)

1. The dyed flame-retardant cotton fabric is characterized in that the cotton fabric is treated by a dyed flame-retardant finishing liquid, and the dyed flame-retardant finishing liquid comprises the following raw materials in parts by weight:
7 to 15 percent of water-soluble ammonium polyphosphate;
0.1 to 3 percent of phosphonic acid group type reactive dye;
0-3% of urea;
2 to 5 percent of dicyandiamide.
2. The dyed flame-retardant cotton fabric according to claim 1, characterized in that: the treatment method comprises the steps of soaking the cotton fabric in the dyeing flame-retardant finishing liquid at 40-70 DEGoC, treating for 10-30 min, taking out, soaking for two times and rolling for two times, wherein the rolling residual rate is 70-150%, and the rolling residual rate is 170-200%oAnd C, baking for 3-6 min, washing with water, and drying to obtain the dyed flame-retardant cotton fabric.
3. The dyed flame-retardant cotton fabric according to claim 1, characterized in that: the phosphonic acid group type reactive dye is reactive yellow P-4G and/or reactive navy blue P-3GD and/or reactive red P-2B.
4. A one-bath one-step processing method of a dyed flame-retardant cotton fabric is characterized by comprising the following steps of: the method comprises the following steps:
preparing a dyeing flame-retardant finishing liquid according to the weight part ratio;
soaking a cotton fabric in the dyeing flame-retardant finishing liquid for treatment, and carrying out two-soaking and two-rolling;
baking treatment;
and (5) washing and drying.
5. The one-bath one-step process for dyeing flame-retardant cotton fabric according to claim 4, characterized in that: the method comprises the following steps of soaking cotton fabrics in the dyeing flame-retardant finishing liquid for treatment, wherein the treatment mainly comprises the following steps:
the weight ratio of the cotton fabric to the dyeing flame-retardant finishing liquid is as follows: 1: 5-20, 40-70oC, soaking for 10-30 min.
6. The one-bath one-step process for dyeing flame-retardant cotton fabric according to claim 4, characterized in that: wherein the rolling residual rate of the two-dipping and two-rolling is 70-150%.
7. The one-bath one-step process for dyeing flame-retardant cotton fabric according to claim 4, characterized in that: the baking treatment mainly comprises the following steps:
at 170-200 deg.CoAnd C, baking for 3-6 min.
CN202111336160.XA 2021-11-12 2021-11-12 Dyed flame-retardant cotton fabric and one-bath one-step processing method thereof Pending CN114016309A (en)

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Citations (4)

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US4351638A (en) * 1981-09-21 1982-09-28 Burlington Industries, Inc. Process of reactively dyeing and printing toweling
RU2212481C1 (en) * 2002-05-08 2003-09-20 Институт химии растворов РАН Formulation of fire-proofing finishing of cellulose-containing textile materials
CN101855318A (en) * 2007-09-07 2010-10-06 佩拉化学有限公司 Method and composition
CN102691215A (en) * 2012-06-04 2012-09-26 浙江庆茂纺织印染有限公司 Non-formaldehyde washable flame-retardant finishing liquid and application thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4351638A (en) * 1981-09-21 1982-09-28 Burlington Industries, Inc. Process of reactively dyeing and printing toweling
RU2212481C1 (en) * 2002-05-08 2003-09-20 Институт химии растворов РАН Formulation of fire-proofing finishing of cellulose-containing textile materials
CN101855318A (en) * 2007-09-07 2010-10-06 佩拉化学有限公司 Method and composition
CN102691215A (en) * 2012-06-04 2012-09-26 浙江庆茂纺织印染有限公司 Non-formaldehyde washable flame-retardant finishing liquid and application thereof

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
HE PENGSHUANG等: ""Flame Retardant Finishing and Dyeing of Cotton Fabric in One Bath"", 《AATCC JOURNAL OF RESEARCH》, vol. 7, no. 4, pages 31 - 14 *

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