Boron-containing flame retardant and preparation method and application thereof

A technology of flame retardant and boric acid, which is applied in the direction of flame retardant fibers, chemical instruments and methods, textiles and papermaking, etc., can solve problems such as complex methods, high requirements for reaction conditions, and single synthetic elements of boron-based flame retardants. Achieve the effects of rich raw material resources, simple and feasible process operation, and huge market development potential

Active Publication Date: 2016-08-17
EASTERN LIAONING UNIV
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  • Abstract
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Problems solved by technology

[0006] In view of this, the present invention aims to solve the problem that the existing boron-based flame retardants have single synthetic elements, complex methods, and high requirements on reaction conditions, and provides a boron-containing flame retardant and its preparation method and application

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  • Boron-containing flame retardant and preparation method and application thereof
  • Boron-containing flame retardant and preparation method and application thereof

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Embodiment

[0023] 1. Preparation method of boron-containing flame retardant

[0024] 1.1 Weigh boric acid (6.18g, 0.1mol) with an electronic balance, wash a graduated cylinder with a measuring range of 20ml and weigh tetrakis hydroxymethyl phosphorus sulfate (81.2g, 0.2mol), 98% concentrated sulfuric acid (0.98g, 0.01mol ) and water (36g, 2mol), wherein concentrated sulfuric acid is used as a catalyst, and water is used as a solvent. Put the above-mentioned substances into a 250ml three-necked flask, install a condensation reflux device, put them into a constant temperature heating electromagnetic stirrer together, and gradually raise the temperature until Reflux occurs, which is the optimum temperature for the reaction (about 110-113°C). Keep the temperature and react for 16-18 hours. As the reaction progresses, the color of the reactant changes from a colorless liquid to a transparent oily liquid. TLC tracking detection confirms that the reaction is complete.

[0025] 1.2 Adjust the p...

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Abstract

The invention discloses a boron-containing flame retardant and a preparation method and application thereof. The preparation method includes the following steps of mixing boric acid, tetrakis(hydroxymethyl)phosphonium sulfate, concentrated sulfuric acid and water, conducting heating and backflow for 16-18 hours, stopping heating after reaction is completed to obtain tetrakis(hydroxymethyl)phosphonium borate, adjusting the pH value after the temperature is lowered, adding urea and octadecylamine, continuing to conduct heating and backflow for 8-10 hours, adding the reaction product to water after reaction is completed to prepare a 60% solution to obtain the boron-containing flame retardant. According to the technical scheme, the raw material resources are rich, price is low, process operation is easy and feasible, the defects of an existing simplex-element flame retardant are overcome, the novel flame retardant effectively integrating B, N and P is obtained, effect is remarkable, and quite considerable economic benefits and social benefits are achieved. The prepared flame retardant meets the new global development tendency of being free of toxin and halogen, low in smoke and the smallest in impact to the environment and has huge market development potentials.

Description

technical field [0001] The invention belongs to the technical field of fireproof materials, and in particular relates to a boron-containing flame retardant and its preparation method and application. Background technique [0002] Flame retardants, as the name implies, are chemical reagents that prevent objects from burning or reduce the degree of combustion. The flame retardant mechanism such as isolating oxygen to prevent continuous combustion achieves the purpose of flame retardant. Wooden furniture, plastic products, textile fibers, etc. in our daily life are all flammable. The origin of flame-retardant polymers by chemical methods can be traced back to the beginning of the 20th century. Scientists such as G.A. Engelard used natural rubber and chlorine to react to obtain flame-retardant chlorinated rubber, which greatly improved the flame-retardant performance of flame retardants and promoted the flame-retardant field. to new heights. [0003] The emergence of flame re...

Claims

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Application Information

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IPC IPC(8): D06M13/503C07F9/54D06M101/06
CPCC07F9/5407D06M13/503D06M2101/06D06M2200/30
Inventor 张慧东陈启凡宫胜臣刘飞
Owner EASTERN LIAONING UNIV
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