A kind of flame retardant for natural fiber and its preparation method and application

A natural fiber and flame retardant technology, which is applied in the field of natural fiber flame retardants and their preparation, can solve the problems of being unable to connect to natural fibers, reducing flame retardants, and being unable to be used as fabric flame retardants, so as to achieve easy operation and implementation, improving the flame retardant effect, and facilitating large-scale industrial production

Active Publication Date: 2016-04-20
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although this technical solution introduces aniline and benzaldehyde into DOPO, which reduces the cost of flame retardants, this flame retardant is more suitable for use in polyurethane flame retardant foams, and cannot be connected to natural fibers and cannot be used as a flame retardant for fabrics. Therefore, there is an urgent need for a flame retardant for natural fibers

Method used

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  • A kind of flame retardant for natural fiber and its preparation method and application
  • A kind of flame retardant for natural fiber and its preparation method and application
  • A kind of flame retardant for natural fiber and its preparation method and application

Examples

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Effect test

Embodiment 1

[0028] In a four-necked flask, 2-sulfonic acid group-4-β-sulfate ethyl sulfonyl aniline (sulfonated para-ester) and dimethylformamide (DMF) were mixed at a mass ratio of 1:10 at room temperature at 25 Fully dissolved at ℃, adding formic acid as a catalyst.

[0029] Raise the temperature to 80°C, then drop γ-glycidyl etheroxypropyltrimethoxysilane (KH-560) with a molar ratio of 2.1 times the sulfonated para-ester into the four-necked flask at a rate of 1 drop / second, and continuously Stir. After the dropwise addition, nitrogen gas was introduced, and the reaction was continued at 80° C. for 3 h under mechanical stirring, and then the temperature was lowered to stop the reaction. After the reaction is over, the mixed liquid is distilled out of the organic solvent DMF under reduced pressure, and a viscous light yellow liquid is obtained after distillation, which is a flame retardant for natural fibers.

[0030] After the viscous light yellow liquid is tested by an infrared inst...

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Abstract

The invention discloses a fire retardant for natural fibers. The fire retardant is a compound with a structure described in formula I and can be applied to natural fabrics by adopting a padding method or an impregnation method. The fire retardant with the structure described in the formula I is used for the natural fibers, has a flame retardant functional group and a functional group capable of reacting with the natural fibers, has the high affinity on the natural fibers and the good natural fiber firmness, and in addition, as a molecular structure has no chromophoric group, the color tune of the fabric is not influenced after the natural fibers are finished by the fire retardant. The invention also discloses a preparation method of the fire retardant for the natural fibers. The synthetic process is ecological and environmentally-friendly, raw materials are easy to obtain, the preparation method is simple, and is easy to operate, and the fire retardant is easy to realize the industrial production.

Description

technical field [0001] The invention relates to the field of fabric flame retardants, in particular to a flame retardant for natural fibers and its preparation method and application. Background technique [0002] Most of the textiles woven from natural fibers in daily life are flammable, which is a hidden danger of fire. With the improvement of living standards and people's awareness of fire prevention, more and more attention is paid to the flame retardancy of textiles. Flame retardants must not only be flame retardant, but also be non-toxic, non-carcinogenic, not produce toxic gases and suppress combustion smoke, etc. A large part of textiles also require flame retardants to have certain durability. [0003] At present, most of the durable flame retardants for natural fibers on the market are organohalogen and organophosphorus. Although organohalogen flame retardants have good flame retardant effects, they will Generate a lot of smoke and corrosive gas; organophosphorus ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M13/507C07F7/18D06M101/02
Inventor 沈一峰王紫颖杨雷姜建堂
Owner ZHEJIANG SCI-TECH UNIV
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