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Boron and benzene ring structure-containing efficient charring flame retardant as well as preparation method and application thereof

A technology of benzene ring structure and flame retardant, which is applied in the field of flame retardant polyester, can solve the problems of fiber material mechanical properties decline, operation and technical difficulties, and high requirements for operators, and achieve strong catalytic carbonization ability, wide application prospects, Raw materials are non-toxic and easy to obtain

Inactive Publication Date: 2022-06-07
JIANGSU HENGLI CHEM FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, polyester fiber and its products have safety problems that cannot be ignored: firstly, it is flammable and the flame spreads quickly; secondly, it causes secondary damage due to high-temperature melting and dripping; thirdly, it will generate a lot of heat, smoke and toxic gases when burning. Great harm to people, the environment, and social production
However, when the two boron-containing flame retardants and phenoxycyclotriphosphazene derivatives are used alone, the efficiency is low. The boron-containing flame retardants cannot effectively catalyze the carbonization of the benzene ring of the vinyl phenyl ester structure, and the modified polyester produces melt drops. , poor flame retardant effect
In addition, the linearity of the two boron-containing flame retardants is poor, especially the boron-containing hyperbranched polymer, and its acidity is strong, and its application in polyester blending has a great impact on the mechanical properties of polyester injection molding products
[0006] In addition, the blending or copolymerization method has a great influence on the formability of polyester materials, especially fiber materials, which is likely to cause a decrease in the mechanical properties of fiber materials, and the operation and technology are difficult, and the requirements for operators are high and time-consuming. force
Textile finishing technology has the advantages of simple operation, simple process, and little damage to the properties of polyester fabrics. It has a good development prospect in the functional finishing of textiles, but the durability of textile finishing functions is worse than that of blending or copolymerization.

Method used

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  • Boron and benzene ring structure-containing efficient charring flame retardant as well as preparation method and application thereof
  • Boron and benzene ring structure-containing efficient charring flame retardant as well as preparation method and application thereof
  • Boron and benzene ring structure-containing efficient charring flame retardant as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] A kind of preparation method of high-efficiency carbon-forming flame retardant containing boron and benzene ring structure, such as figure 1 shown, including the following steps:

[0046] (1) Dissolve p-hydroxyphenylboronic acid and p-chlorobenzaldehyde in N,N-dimethylformamide / distilled water, and react at 70°C for 60min;

[0047] Among them, the molar ratio of p-hydroxyphenylboronic acid and p-chlorobenzaldehyde is 2:1; the volume ratio of N,N-dimethylformamide and distilled water is 1:1; The dosage ratio of formamide is 1g:1mL;

[0048] (2) Add a certain amount of neopentyl glycol to the reaction system in step (1), raise the temperature to 130 ° C, react for 60 min, and purify by vacuum distillation to obtain a high-efficiency carbon-forming flame retardant containing boron and benzene ring structure ;

[0049] Wherein, the molar ratio of neopentyl glycol and p-hydroxyphenylboronic acid is 1:1; the pressure of vacuum distillation is 35kPa, and the temperature is ...

Embodiment 2

[0053] A kind of preparation method of high-efficiency carbon-forming flame retardant containing boron and benzene ring structure, such as figure 2 shown, including the following steps:

[0054] (1) Dissolve p-hydroxyphenylboronic acid and m-chlorobenzaldehyde in N,N-dimethylformamide / distilled water, and react at 80°C for 50min;

[0055] Among them, the molar ratio of p-hydroxyphenylboronic acid and m-chlorobenzaldehyde is 2.2:1; the volume ratio of N,N-dimethylformamide and distilled water is 2:1; The dosage ratio of formamide is 1g:1.5mL;

[0056] (2) A certain amount of neopentyl glycol is added to the reaction system in step (1), the temperature is raised to 140 ° C, the reaction is carried out for 50 min, and purified by vacuum distillation to obtain a high-efficiency carbon-forming flame retardant containing boron and benzene ring structure ;

[0057] Wherein, the molar ratio of neopentyl glycol to p-hydroxyphenylboronic acid is 1.2:1; the pressure of vacuum distill...

Embodiment 3

[0061] A preparation method of a high-efficiency carbon-forming flame retardant containing boron and a benzene ring structure, specifically comprising the following steps:

[0062] (1) Dissolve p-hydroxyphenylboronic acid and p-chlorobenzaldehyde in N,N-dimethylformamide / distilled water, and react at 75°C for 55min;

[0063] Among them, the molar ratio of p-hydroxyphenylboric acid and p-chlorobenzaldehyde is 2.1:1; the volume ratio of N,N-dimethylformamide and distilled water is 2:1; The dosage ratio of formamide is 1g:1.3mL;

[0064] (2) A certain amount of neopentyl glycol is added to the reaction system in step (1), the temperature is raised to 135 ° C, the reaction is carried out for 55 min, and purified by vacuum distillation to obtain a high-efficiency carbon-forming flame retardant containing boron and benzene ring structure ;

[0065] Wherein, the molar ratio of neopentyl glycol to p-hydroxyphenylboronic acid is 1.1:1; the pressure of vacuum distillation is 40kPa, an...

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Abstract

The invention relates to an efficient charring flame retardant containing boron and a benzene ring structure and a preparation method and application thereof.The efficient charring flame retardant containing the boron and the benzene ring structure is prepared by reacting p-hydroxyphenylboronic acid with chlorobenzaldehyde and neopentyl glycol, and the chemical structural formula of the prepared efficient charring flame retardant containing the boron and the benzene ring structure is shown in the specification; the polyester fabric is subjected to flame-retardant finishing by adopting an efficient char-forming flame retardant containing boron and a benzene ring structure through a high-temperature adsorption method. The preparation method is simple, and raw materials are nontoxic and easy to obtain; the prepared efficient charring flame retardant containing the boron and benzene ring structure has high catalytic charring capacity, generated carbon residues are high in thermal stability, supply of external heat and oxygen to matrixes below the carbon residues is easily isolated, the effect of protecting the matrixes below is achieved, accordingly, the flame retardant property of coated fabric is improved, and the application prospect is wide.

Description

technical field [0001] The invention belongs to the technical field of flame-retardant polyester, and relates to a high-efficiency carbon-forming flame retardant containing boron and a benzene ring structure, and a preparation method and application thereof. Background technique [0002] The rapid development of polyester fiber materials and their products has continuously replaced traditional materials such as cotton and metal, and is widely used in various fields of daily life and social production. However, polyester fiber and its products have safety problems that cannot be ignored: firstly, it is flammable and the flame spreads quickly; secondly, the high temperature melting and dripping causing secondary damage; again, a large amount of heat, smoke and toxic gases will be generated when burning. It causes huge harm to people, the environment and social production. It is of great significance to develop a flame retardant system with high flame retardant efficiency and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M13/51D06M101/32
CPCD06M13/51D06M2101/32D06M2200/30
Inventor 尹立新汤方明王丽丽邵义伟寇婉婷赵慧荣张元华杨传芝丁竹君
Owner JIANGSU HENGLI CHEM FIBER
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