A kind of preparation method of flame retardant fabric

A flame-retardant fabric, polyester flame-retardant technology, applied in the field of fabrics, can solve the problems affecting material processing, mechanical and application performance, compatibility and interface, poor compatibility of polymers, etc., to achieve the suppression of thermal decomposition process , reduce thermal decomposition rate, strong flame retardant effect

Active Publication Date: 2020-12-22
昱天(上海)新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Inorganic flame retardants have the advantages of low volatility, low smoke, low toxicity, high stability and low price, but they have poor compatibility with polymers and do not have washability
Additive flame retardants are still the mainstream products in the flame retardant market. The process of additive flame retardant polymers is relatively simple, and there are many types of flame retardants that can meet the flame retardant requirements, but it is easy to affect the processing, machinery and application of materials. performance, there are also problems such as uneven dispersion, compatibility and interface

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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  • A kind of preparation method of flame retardant fabric
  • A kind of preparation method of flame retardant fabric
  • A kind of preparation method of flame retardant fabric

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052]A method for preparing a flame-retardant fabric specifically includes the following steps:

[0053]S1, synthesis of methyl hypophosphite

[0054]The reaction formula is as follows:

[0055]

[0056]The solvent in the commercially available 50% hypophosphorous acid was removed by rotary evaporation to obtain 95% hypophosphorous acid. In an ice-water bath, 200 mol 95% hypophosphorous acid and 240 mol trimethyl formate were added to the reactor, stirred for 10 minutes, and then heated When the temperature is 35°C, continue to stir and react for 3 hours, and distill off methanol and methyl formate to obtain methyl hypophosphite 1 as a pale yellow solid powder with a yield of 98.4%;

[0057]S2 Synthesis of Methyl Bis(1-phenyl-2-cyanoethyl)phosphonate

[0058]The reaction formula is as follows:

[0059]

[0060]In an ice-water bath, 150 mol of methyl hypophosphite 1, 330 mol of benzene acrylonitrile 2 and 22.5 mol of the catalyst triethylamine were added to the reactor. After stirring for 10 minutes, the t...

Embodiment 2

[0075]A method for preparing a flame-retardant fabric specifically includes the following steps:

[0076]S1, synthesis of methyl hypophosphite

[0077]The reaction formula is as follows:

[0078]

[0079]The solvent in the commercially available 50% hypophosphorous acid was removed by rotary evaporation to obtain 99% hypophosphorous acid. In an ice-water bath, 200 mol 99% hypophosphorous acid and 260 mol trimethyl formate were added to the reactor, and stirred for 15 minutes. The temperature was raised to 40° C., and the reaction was continued for 4 hours. The methanol and methyl formate were distilled off to obtain methyl hypophosphite 1 as a pale yellow solid powder with a yield of 99.2%;

[0080]S2 Synthesis of Methyl Bis(1-phenyl-2-cyanoethyl)phosphonate

[0081]The reaction formula is as follows:

[0082]

[0083]In an ice-water bath, 150 mol of methyl hypophosphite 1, 375 mol of benzene acrylonitrile 2 and 33 mol of catalyst triethylamine were added to the reactor. After stirring for 15 minutes, the ...

Embodiment 3

[0099]A method for preparing a flame-retardant fabric specifically includes the following steps:

[0100]S1, synthesis of methyl hypophosphite

[0101]The reaction formula is as follows:

[0102]

[0103]The solvent in the commercially available 50% hypophosphorous acid was removed by rotary evaporation to obtain 98% hypophosphorous acid. In an ice-water bath, 200 mol 98% hypophosphorous acid and 250 mol trimethyl formate were added to the reactor, stirred for 12 minutes and then heated When the temperature reached 38°C, the reaction was continued to stir for 3 hours, methanol and methyl formate were distilled off, and methyl hypophosphite 1 was obtained as a pale yellow solid powder with a yield of 98.5%;

[0104]S2 Synthesis of Methyl Bis(1-phenyl-2-cyanoethyl)phosphonate

[0105]The reaction formula is as follows:

[0106]

[0107]In an ice-water bath, 150 mol of methyl hypophosphite 1, 360 mol of benzene acrylonitrile 2 and 30 mol of catalyst triethylamine were added to the reactor. After stirring for ...

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 fabric preparation method. The method includes steps: S1, synthesizing methyl hypophosphite; S2, synthesizing bis(1- phenyl-2-cyanoethyl)methyl phosphate; S3,subjecting bis(1- phenyl-2-cyanoethyl)methyl phosphate to hydrolysis for preparing bis(1- phenyl-2-carboxylethyl)phosphoric acid; S4, adding terephthalic acid, bis(1- phenyl-2-carboxylethyl)phosphoric acid, ethylene glycol and catalyst tetrabutyl titanate into a stainless steel reactor, and esterifying to obtain a low polymer; S5, after esterification prepolymerization in the step S4, continuingpolycondensation to obtain a polyester flame-retardant high polymer 8; S6, adding the polyester flame-retardant high polymer 8 into a screw extruder, performing fused extrusion spinning, adopting a spinning machine for spinning, and adopting a loom for weaving to obtain a flame-retardant fabric. The flame-retardant fabric preparation method is scientific and reasonable, and the prepared flame-retardant fabric is excellent in flame retardation and washing fastness.

Description

Technical field[0001]The invention belongs to the technical field of fabrics, and specifically relates to a method for preparing a flame-retardant fabric.Background technique[0002]Widely used in daily life, the potential danger of fire is increasing day by day, which seriously threatens people's life and property safety. Therefore, the flame retardant treatment of polymer materials has received great attention. Flame retardant is a kind of auxiliary agent that can prevent polymer sub-materials from being ignited or inhibit flame propagation. Halogen flame retardants are popular because of their good flame retardant effect, low dosage, little impact on material performance and moderate price. The universal welcome. However, in the process of using halogen-based flame retardants, polymer materials not only produce dioxins, but also produce a large amount of dense smoke and corrosive gases, which cause certain harm to nature, the environment and the personal safety of firefighters. The...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F6/84C08G63/688
CPCC08G63/6886D01F6/84
Inventor 不公告发明人
Owner 昱天(上海)新材料有限公司
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