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Halogen-free expanding flame retardant containing polymeric macromolecule triazine rings and preparation method of halogen-free expanding flame retardant

A technology of intumescent flame retardant and triazine ring, applied in the field of halogen-free intumescent flame retardant containing polymeric macromolecular triazine ring and its preparation, and can solve the problems of great harm to the environment and human body, a large number of them, etc.

Inactive Publication Date: 2016-09-07
NANJING FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the disadvantage of halogen flame retardants is that a large amount of smoke and toxic and corrosive gases are generated during combustion, which is harmful to the environment and human body. Therefore, the application of halogen flame retardants is limited in many fields.

Method used

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  • Halogen-free expanding flame retardant containing polymeric macromolecule triazine rings and preparation method of halogen-free expanding flame retardant
  • Halogen-free expanding flame retardant containing polymeric macromolecule triazine rings and preparation method of halogen-free expanding flame retardant
  • Halogen-free expanding flame retardant containing polymeric macromolecule triazine rings and preparation method of halogen-free expanding flame retardant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Add 18.45g of cyanuric chloride and 100ml of acetone solution (the volume ratio of acetone and water is 1:1) in the 1L reaction flask equipped with reflux condenser, constant pressure dropping funnel, stirrer and thermometer, fully stir, Make the cyanuric chloride disperse evenly, then under the condition of 0℃, add 18g of 1-oxyphospha-4-hydroxymethyl-2,6,7-trioxabicyclo[2.2. 2] Octane and NaHCO 3 solution (8.4g NaHCO 3 dissolved in 100ml distilled water), after the dropwise addition was completed, the reaction was carried out at 0° C. for 3 hours. Then raise the temperature to 40°C, add 100ml of acetone solution, and then evenly and slowly add 5.4g of p-phenylenediamine and NaHCO 3 solution (8.4g NaHCO 3 Dissolve in 100ml distilled water), keep the temperature at 40°C, after the dropwise addition is complete, react under this condition for 8 hours. Then suction filter and wash with water to get the reaction product of the second step, put it into a 1L three-neck fl...

Embodiment 2

[0040] Add 18.45g of cyanuric chloride and 100ml of acetone solution (the volume ratio of acetone and water is 1:1.5) in the 1L reaction flask equipped with reflux condenser, constant pressure dropping funnel, stirrer and thermometer, fully stir, Disperse cyanuric chloride evenly, and then add 18g of 1-oxyphospha-4-hydroxymethyl-2,6,7-trioxabicyclo[2.2 .2] Octane and NaHCO 3 solution (8.4g NaHCO 3 dissolved in 100ml of distilled water), after the dropwise addition was completed, the reaction was carried out at -5°C for 4 hours. Then raise the temperature to 50°C, add 100ml of acetone solution, and then evenly and slowly add 6.8g of p-xylylenediamine and NaHCO 3 solution (8.4g NaHCO 3 Dissolve in 100ml distilled water), keep the temperature at 50°C, after the dropwise addition is complete, react under this condition for 6 hours. Then suction filter and wash with water to obtain the reaction product of the second step, put it into a 1L three-necked flask, add 300ml of toluen...

Embodiment 3

[0044] Add 18.45g of cyanuric chloride and 100ml of acetone solution (the volume ratio of acetone and water is 1:1) in the 1L reaction flask equipped with reflux condenser, constant pressure dropping funnel, stirrer and thermometer, fully stir, Make the cyanuric chloride disperse evenly, then under the condition of 5℃, add 18g of 1-oxyphospha-4-hydroxymethyl-2,6,7-trioxabicyclo[2.2. 2] Octane and NaHCO 3 solution (8.4g NaHCO 3 Dissolved in 100ml distilled water), after the dropwise addition was completed, reacted at 5°C for 3 hours. Then raise the temperature to 45°C, add 100ml of acetone solution, and then evenly and slowly add 6.15g of 2,4-diaminotoluene and NaHCO 3 solution (8.4g NaHCO 3 Dissolve in 100ml distilled water), keep the temperature at 45°C, after the dropwise addition is complete, react under this condition for 7 hours. Then suction filter and wash with water to obtain the reaction product of the second step, put it into a 1L three-necked flask, add 300ml of...

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Abstract

The invention discloses a halogen-free expanding flame retardant containing polymeric macromolecule triazine rings and a preparation method of the halogen-free expanding flame retardant. According to the flame retardant, benzodiazepines diamine is introduced, the thermal stability of products is improved, the charring forming amount is increased, and the flame retardant is directly applied to various thermoplastic and thermosetting materials without the synergistic effect of an APP. Meanwhile, each single triazine ring contains 1-oxy-phospha-4-hydroxymethyl-2,6,7-trioxabicyclo[2.2.2]octyl group, is high in contents of phosphorus and hydroxyl, and can serve as a reactive and expanding flame retardant. The flame retardant belongs to a polymerization reaction product formed by substituting 1-oxy-phospha-4-hydroxymethyl-2,6,7-trioxabicyclo[2.2.2]octane and benzodiazepines diamine with cyanuric chloride and connecting the triazine rings with one another.

Description

technical field [0001] The invention relates to a flame retardant and a preparation method, in particular to a halogen-free expansion type flame retardant containing a polymerized macromolecular triazine ring and a preparation method. Background technique [0002] The early flame retardants were mainly halogen flame retardants, which occupied most of the polymer flame retardant market due to their advantages of less dosage, high flame retardant efficiency and wide adaptability. However, the disadvantage of halogen flame retardants is that a large amount of smoke and toxic and corrosive gases are generated during combustion, which is harmful to the environment and human body. Therefore, the application of halogen flame retardants is currently limited in many fields. [0003] The use of intumescent flame retardants in polymer materials is a research hotspot in recent years. G.Camino et al. (Camino, G.Martinasso, C.Costal, L.Thermal degradation of pentaerythritol diphosphate, ...

Claims

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Application Information

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IPC IPC(8): C08G73/06C08L23/12C08L79/04
CPCC08G73/0644C08G73/065C08L23/12C08L2201/02C08L2201/22C08L79/04
Inventor 罗振扬赵昱贺吴爽万元俊沈晟光
Owner NANJING FORESTRY UNIV
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