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Flame-retardant moisture-absorbing fabric and preparation method thereof

A fabric and soluble technology, applied in the direction of flame-retardant fibers, fiber types, textiles, and papermaking, can solve problems such as poor compatibility, unfavorable fiber forming, and poor flame-retardant stability of modified fibers, so as to increase surface energy, The effect of improving moisture absorption performance

Pending Publication Date: 2021-02-09
ZHEJIANG SCI-TECH UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the poor compatibility between LDH and the matrix, direct mixed spinning will easily lead to uneven distribution of LDH particles in the silk melt, causing the melt to break during the stretching process, which is not conducive to fiber formation; the latter is mostly through physical adsorption. The method attaches LDH to the surface of the fiber, and the obtained modified fiber has poor flame retardant stability

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-retardant moisture-absorbing fabric and preparation method thereof
  • Flame-retardant moisture-absorbing fabric and preparation method thereof
  • Flame-retardant moisture-absorbing fabric and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] In 50mL deionized water, add 0.25g CuSO 4 , 0.7g MgSO 4 , 0.4g Al 2 (SO 4 ) 3 and 2.6g of urea, fully dissolved, transferred to a hydrothermal kettle, and placed in an oven for crystallization at 100°C for 12h. After the reaction was completed, it was taken out after cooling down to room temperature, centrifuged and washed several times with deionized water, and finally vacuum-dried for 12 hours to obtain a layered double metal hydroxide.

[0030] Put 2 g / L layered double metal hydroxide in 2 g / L tris hydroxymethylaminomethane (Tris) buffer solution and sonicate for 6 hours to obtain a uniform and stable suspension system.

[0031] Put the cleaned polyester fabric into the above suspension, add 2g / L dopamine hydrochloride, vibrate at 25°C for 12 hours at a rotation speed of 200r / min, then take out the fabric and dry it in an oven to obtain the modified moisture-absorbing and flame-retardant fabric. Sexy fabrics.

Embodiment 2

[0033] In 50mL deionized water, add 1.05g CuSO 4 with 0.4gAl 2 (SO 4 ) 3 and 2.6g of urea, fully dissolved, transferred to a hydrothermal kettle, and placed in an oven for crystallization at 110°C for 24h. After the reaction was completed, it was taken out after cooling down to room temperature, washed several times by centrifugation with deionized water, and finally vacuum-dried for 24 hours to obtain a layered double metal hydroxide.

[0034] Put 3g / L layered double metal hydroxide in 1g / L phosphate buffer solution and sonicate for 3h to obtain a uniform and stable suspension system.

[0035] Arrange the cleaned cotton in the above suspension, add 1g / L dopamine hydrochloride, vibrate at 30°C for 24 hours at a speed of 100r / min, then take out the fabric and dry it in an oven to obtain the modified hygroscopic and flame retardant fabric.

Embodiment 3

[0037] In 50mL deionized water, 1gZnCl 2 with 0.3g FeCl 3 and 5mL ammonia water (concentration: 20%), fully dissolved, transferred to a hydrothermal kettle, and placed in an oven for crystallization at 110°C for 6h. After the reaction was completed, it was taken out after cooling down to room temperature, centrifuged and washed several times with deionized water, and finally vacuum-dried for 12 hours to obtain a layered double metal hydroxide.

[0038] Put 2g / L layered double metal hydroxide in 0.2g / L borate buffer solution and sonicate for 3h to get a uniform and stable suspension system.

[0039] Put the cleaned viscose fabric into the above suspension, add 0.5g / L dopamine hydrochloride, vibrate at 50°C for 6h at a speed of 300r / min, then take out the fabric and dry it in an oven to obtain the moisture absorption resistance Flammable modified fabric.

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 flame-retardant moisture-absorbing fabric and a preparation method thereof. The preparation method specifically comprises the following steps that a metal salt and an alkaline substance are fully dissolved in water, and then transferred into a hydrothermal kettle for a hydrothermal reaction to obtain a layered double hydroxide (LDH); the LDH is placed in a buffer solutionto be subjected to ultrasonic treatment to obtain a uniform and stable suspension system; and the fabric and dopamine hydrochloride are added into the suspension system for oscillation treatment, andfinally drying is carried out to obtain the modified fabric. According to the preparation method, dopamine and LDH are coordinated, so that a LDH flame retardant is firmly loaded on the surface of the fabric, and the stability of the modified layer is greatly improved. Meanwhile, dopamine can be self-polymerized at normal temperature, and the adhesion capacity is extremely high. The preparation method has the characteristics of mild reaction conditions, simplicity, feasibility and wide application range, and the flame retardance and moisture absorption performance of the modified fabric are remarkably improved.

Description

technical field [0001] The invention relates to the field of preparation of flame-retardant and moisture-absorbing fabrics, in particular to a flame-retardant and moisture-absorbing fabric based on layered double metal hydroxide treatment. Background technique [0002] With the improvement of people's living standards and protection awareness, the development of flame-retardant fabrics has become urgent. Commonly used fabrics are extremely flammable, and if they are not treated with flame retardant, they can easily cause fires. According to statistics, more than 20% of fire accidents in the world are caused by fabric burning, especially residential fires. Therefore, the development of flame-retardant fabrics is extremely important to eliminate fire hazards and reduce the loss of people's lives and property. The existing fabric production process mainly uses bromine-containing and phosphorus-containing flame retardants to flame-retardant fabrics, but such flame retardants w...

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): D06M15/37D06M11/42D06M11/44D06M11/45D06M11/49D06M11/46D06M101/32D06M101/06D06M101/10D06M101/12D06M101/28D06M101/20D06M101/34
CPCD06M15/37D06M11/42D06M11/44D06M11/45D06M11/49D06M11/46D06M2101/32D06M2101/06D06M2101/10D06M2101/12D06M2101/28D06M2101/20D06M2101/34D06M2200/30D06M2200/11
Inventor 姚玉元甄建政吕维扬王金辉孙继安王燕
Owner ZHEJIANG SCI-TECH UNIV
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