Preparation method for durable and inflaming retarding after-finishing chinlon fabric

A durable flame retardant and post-finishing technology, which is applied in fiber treatment, textiles and papermaking, fiber types, etc. It can solve the problems of complex reaction process, affecting fabric feel and color, etc., and achieves less consumption, less influence on fabric feel and appearance , The effect of improving thermal stability

Inactive Publication Date: 2014-07-02
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the above-mentioned modification methods have more or less complex reaction processes, which affect the fabric feel and color and other limitations.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] (1) Fabric pretreatment: Before finishing the nylon fabric, boil it with 5g / L sodium carbonate solution for 30 minutes, then rinse it with water, and dry it for later use.

[0020] (2) Hydroxymethylation modification: The pretreated fabric is placed in a three-necked flask with a condenser tube, a thermometer and a nitrogen tube, 36% formaldehyde solution is used as the reaction medium, and the pH value is adjusted to about 2 with hydrochloric acid. After reacting for 20 minutes, the sample was taken out and washed repeatedly with water and then dried.

[0021] (3) Flame retardant finishing: The fabric modified by methylolation is fully impregnated in 15% thiourea flame retardant solution, after two dipping and two rolling, pre-baking at 90°C for 3 minutes, and baking at 150°C 1min.

Embodiment 2

[0023] (1) Fabric pretreatment: Before finishing nylon fabric, boil it with 4g / L sodium carbonate solution for 30 minutes, then rinse it with water, and dry it for later use.

[0024] (2) Hydroxymethylation modification: The pretreated fabric is placed in a three-necked flask with a condenser tube, a thermometer and a nitrogen tube, 36% formaldehyde solution is used as the reaction medium, and the pH value is adjusted to about 2 with hydrochloric acid. After reacting for 20 minutes, the sample was taken out and washed repeatedly with water and then dried.

[0025] (3) Flame retardant finishing: The fabric modified by methylolation is fully impregnated in 15% thiourea flame retardant solution, after two dipping and two rolling, pre-baking at 90°C for 3 minutes, and baking at 150°C 1min.

Embodiment 3

[0027] (1) Fabric pretreatment: Before finishing the nylon fabric, boil it with 8g / L sodium carbonate solution for 30 minutes, then rinse it with water, and dry it for later use.

[0028] (2) Hydroxymethylation modification: The pretreated fabric is placed in a three-necked flask with a condenser tube, a thermometer and a nitrogen tube, 36% formaldehyde solution is used as the reaction medium, and the pH value is adjusted to about 2 with hydrochloric acid. After reacting for 20 minutes, the sample was taken out and washed repeatedly with water and then dried.

[0029] (3) Flame retardant finishing: The fabric modified by methylolation is fully impregnated in 15% thiourea flame retardant solution, after two dipping and two rolling, pre-baking at 90°C for 3 minutes, and baking at 150°C 1min.

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Abstract

The invention relates to a preparation method for a durable and inflaming retarding after-finishing chinlon fabric and belongs to the field of inflaming retarding modification of fabrics. The preparation method comprises the following steps: firstly, carrying out surface hydroxymethylation modification on a pre-treated fabric and introducing active hydroxymethyl; and then carrying out a sufficient immersing and common padding finishing process on the fabric and a fire retardant, and baking and grafting the fire retardant on the fabric to realize the durable and inflaming retarding aims. The invention aims to provide the preparation method for the durable and inflaming retarding after-finishing chinlon fabric so as to overcome the defects in the prior art that halogen is included, the water washing resistance is poor and the like; the inflaming retardance of a prepared inflaming retarding nylon fabric is improved obviously and the appearance and the hand feeling of the fabric are not changed obviously; the water washing resistance is good. An experiment result shows that the oxygen index of the fabric subjected to the fire retardant treatment of the method can be improved to 46.2% from 21.6%; after the fabric is washed for 50 times, the level of 44.5% can also be kept. In a vertical combustion test, molten drops are not formed and the damage length is less than 3cm. The heat stability is obviously improved and the carbon forming performance is improved obviously. According to the preparation method, use amount of the fire retardant is less, process is simple, the cost is low and the fabric can be used in fields with high inflaming retarding requirements.

Description

technical field [0001] The invention relates to the field of flame-retardant modification of nylon fabrics, in particular to a preparation method of durable flame-retardant finishing nylon fabrics. Background technique [0002] With the improvement of the quality of life, people have higher and higher requirements for flame retardancy. In addition to requiring materials to have high cost performance, flame retardants and flame retardant materials are also required to be non-toxic, non-corrosive, and environmentally friendly. Nylon has been widely used in various fields for many years, but so far there is no durable flame-retardant finishing technology that can be commercially applied. Traditional halogen flame retardants are easy to release toxic gas, reduce visibility, and bring safety hazards. Although halogen-free flame-retardant nylon fabrics overcome the hazards caused by halogens in halogen flame-retardant technology, the finishing agents are often water-based and cann...

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): D06M13/432D06M11/76D06M13/127D06M101/34
Inventor 张胜孙军谷晓昱邹欢
Owner BEIJING UNIV OF CHEM TECH
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