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Carbonizing agent for halogen-free expansion flame-retardant system and preparation method of carbonizing agent

A technology of intumescent flame retardant and char forming agent, which is applied in the direction of organic chemistry to achieve the effects of improving char forming and flame retardancy, improving compatibility, and improving the deterioration of mechanical properties of materials

Inactive Publication Date: 2014-01-22
湖南美莱珀科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to simplify the complex and cumbersome reaction process and facilitate industrialized continuous production

Method used

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  • Carbonizing agent for halogen-free expansion flame-retardant system and preparation method of carbonizing agent
  • Carbonizing agent for halogen-free expansion flame-retardant system and preparation method of carbonizing agent
  • Carbonizing agent for halogen-free expansion flame-retardant system and preparation method of carbonizing agent

Examples

Experimental program
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Effect test

Embodiment 1

[0026] Add cyanuric chloride and acetone to a four-necked flask equipped with a stirrer, a dropping funnel, a thermometer and a reflux condenser to prepare a solution with a volume molar concentration of 1.25 mol / L, and stir under a nitrogen atmosphere to make trimerization Cyanogen chloride is dispersed evenly, and then piperazine is added dropwise, and the reaction molar ratio of it to cyanuric chloride is 0.3:1. Control the temperature at 0-5°C in an ice bath, and add ammonia water dropwise after reacting for 5 hours. The reaction molar ratio of cyanuric chloride and ammonia in ammonia water is 1:1.7. Heat up to 25°C, continue to stir for 10 hours, add sodium hydroxide, the reaction molar ratio of it to cyanuric chloride is 2.5:1, and raise the temperature to 60°C, continue to react for 6 hours, then filter and dry to obtain the final The product is a char-forming agent for halogen-free intumescent flame retardant systems.

Embodiment 2

[0028] Add cyanuric chloride and 1-methyl-2-pyrrolidone to a four-necked flask equipped with a stirrer, a dropping funnel, a thermometer and a reflux condenser, and prepare a solution with a volume molar concentration of 0.8mol / L, in nitrogen Stir under the protection of the atmosphere to disperse the cyanuric chloride evenly, then add piperazine dropwise, the reaction molar ratio of the piperazine to the cyanuric chloride is 0.7:1, control the temperature in an ice bath to 0°C, react for 6 hours, drop Add ammonia. The reaction molar ratio of cyanuric chloride and ammonia in ammonia water is 1:2.3. Heat up to 30°C, continue to stir for 8 hours, add sodium bicarbonate, the reaction molar ratio of it to cyanuric chloride is 3.5:1, and raise the temperature to 70°C, continue to react for 4 hours, then filter and dry to obtain the final The product is a char-forming agent for halogen-free intumescent flame retardant systems.

Embodiment 3

[0030] Add cyanuric chloride and N,N-dimethylacetamide in the four-necked flask that stirrer is installed, dropping funnel, thermometer and reflux condenser, be mixed with the solution that volume molar concentration is 1.5mol / L, in Stir under the protection of nitrogen atmosphere to disperse cyanuric chloride evenly, then add piperazine dropwise, the molar ratio of its reaction with cyanuric chloride is 0.5:1, control the temperature in an ice bath to 3°C, and react for 6 hours, Add ammonia water dropwise, and the reaction molar ratio of cyanuric chloride to ammonia in ammonia water is 1:2.0. Heat up to 30°C, continue to stir for 8 hours, add triethylamine, the reaction molar ratio of it to cyanuric chloride is 3.0:1, and raise the temperature to 70°C, continue to react for 4 hours, then filter and dry to obtain the final The product is a char-forming agent for halogen-free intumescent flame retardant systems.

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Abstract

The invention relates to a carbonizing agent for a halogen-free expansion flame-retardant system and a preparation method of the carbonizing agent. The compound is prepared by taking cyanuric chloride, piperazine and ammonia water as main raw materials through substitution reaction, and has the characteristics that the raw materials are easy to obtain, the industrial continuous production is facilitated, the production operation is safe, and the like. According to the carbonizing agent with a triazine ring structure, two components of a carbon source and a gas source are combined into one molecular structure to form a macromolecular structure, not only is the defect that the three components of the expansion flame-retardant in a matrix are not uniformly dispersed overcome, but also the carbonizing property and the flame-retardant of the flame-retardant system are improved, and moreover due to the triazine ring structure in the molecular structure, good thermal stability is achieved, the carbonizing agent can be used as a flame retardant in most macromolecular structures, and has a good application prospect.

Description

technical field [0001] The invention relates to a preparation method of a char-forming agent for a halogen-free intumescent flame retardant system. Background technique [0002] With the wide application of polymer materials in life and engineering production, people's flame retardant requirements for polymer materials are also increasing, and the demand for flame retardants and flame retardant materials is also expanding, which stimulates the development, production and sales of flame retardants. Applications are rapidly evolving. At present, people are well aware of the hazards of halogenated flame retardants. The development of today's flame retardants requires low toxicity, low smoke, no pollution, high efficiency, and halogen-free. Therefore, a large number of different types of flame retardants have become the focus of research and application. Intumescent flame retardants are low-toxic, smoke-suppressing, halogen-free, and can prevent molten droplets. They are highl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K5/3492C07D251/70
Inventor 彭治汉邵偲淳
Owner 湖南美莱珀科技发展有限公司
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