A kind of flame-retardant graft modification method of nylon 66 fabric

A technology of graft modification and fabric, which is applied in textiles, papermaking, fiber treatment, etc., can solve the problems of no active groups, difficulty of graft modification, etc., and achieve rapid response, strong microwave penetration ability and high efficiency. Effect

Inactive Publication Date: 2016-02-24
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are not many reports on the application of microwaves to the surface photografting of fabrics, especially on the surface of nylon fabrics. This is because compared with natural fabrics, there are no active groups in the structure of nylon fabrics, so It is difficult to graft modification on its surface

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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Nylon 66 fabric in 0.4% Na 2 CO 3 Boil in water for 30 minutes, then extract with acetone for 12 hours, put the fabric in 0.3% benzoyl peroxide initiator solution, and after dipping and rolling (paddle speed 1m / min, pressure 0.3MPa) in the microwave Pre-reacted for 30 minutes under conditions, then added a monomer solution with an allylthiourea monomer content of 20 g, reacted in a microwave oven for 60 minutes, took it out, washed with water and dried, and extracted with acetone for 12 hours to remove the homogeneous residue on the surface of the fabric. The polymer was finally dried in an oven to constant weight. The reaction temperature is from room temperature to 67°C, and the microwave power is 400W. The grafting rate of nylon 66 fabric was 2.20%. There was no droplet in vertical combustion, and the damage length decreased from 17cm to 9.7cm. The oxygen index increased from 20.2% to 29.3%.

Embodiment 2

[0012] Nylon 66 fabric in 0.4% Na 2 CO 3 Boil in water for 30 minutes, then extract with acetone for 12 hours, put the fabric in 0.5% benzoyl peroxide initiator solution, after dipping and rolling (roller speed 1m / min, pressure 0.3MPa) in the microwave Pre-reacted for 30 minutes under conditions, then added a monomer solution with an allylthiourea monomer content of 20 g, reacted in a microwave oven for 60 minutes, took it out, washed with water and dried, and extracted with acetone for 12 hours to remove the homogeneous residue on the surface of the fabric. The polymer was finally dried in an oven to constant weight. The reaction temperature is from room temperature to 65°C, and the microwave power is 400W. The grafting rate of nylon 66 fabric was 1.34%. There was no droplet in vertical combustion, and the damage length decreased from 17cm to 11.9cm. The oxygen index increased from 20.2% to 27.8%. Embodiment Three

Embodiment 3

[0013] Nylon 66 fabric in 0.4% Na 2 CO 3 Boil in water for 30 minutes, then extract with acetone for 12 hours, put the fabric in 0.5% benzoyl peroxide initiator solution, after dipping and rolling (roller speed 1m / min, pressure 0.3MPa) in the microwave Pre-reacted for 30 minutes under conditions, then added a monomer solution with an allylthiourea monomer content of 20 g, reacted in a microwave oven for 90 minutes, took it out, washed with water and dried, and extracted with acetone for 12 hours to remove the homogeneous residue on the surface of the fabric. The polymer was finally dried in an oven to constant weight. The reaction temperature is from room temperature to 67°C, and the microwave power is 400W. The grafting rate of nylon 66 fabric was 1.70%; there was no droplet in vertical combustion, and the damage length decreased from 17cm to 10.3cm; the oxygen index increased from 20.2% to 27.5%.

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 relates to a flame retardant graft modification method for nylon 66 fabric by a microwave irradiation method. The grafting reaction is carried out by the microwave method, and the flame retardant graft modification method has the advantages of short reaction time, even reaction, and small effect on the performance of the fabric. Allylthiourea is adopted as a grafted monomer, and thus the combustion performance of the grafted nylon 66 fabric is obviously improved; the monomer and the fabric surface are bonded through a chemical bond, the bonding effect is stable and lasting and thus the washability of the fabric is high.

Description

technical field [0001] The invention relates to a flame-retardant grafting modification method of nylon 66 fabric, that is, the nylon 66 fabric is grafted on the surface by using a microwave method, so as to improve the combustion performance of the nylon fabric. Background technique [0002] Since its launch by DuPont in 1930, nylon has developed into the world's most diverse and widely used engineering plastics, and its total output ranks first in the world's engineering plastics. Nylon fabric is widely used in tents, interior decoration, airbags and clothing because of its advantages such as high strength, good wear resistance, good elasticity, and insect resistance. Nylon fabric itself has a certain self-extinguishing property, but when the fire is relatively large, its larger specific surface area is more likely to make the fire spread rapidly, and due to the melting point (215-265°C) and ignition point temperature (403-431°C) of nylon fabric ) has a large difference, ...

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 Patents(China)
IPC IPC(8): D06M14/34
Inventor 张胜赵静然谷晓昱赵倩江玉唐武飞
Owner BEIJING UNIV OF CHEM TECH
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