Expansive type dripping-resistant flame retardant and preparation method thereof

An intumescent flame retardant and flame retardant technology, which is applied in the field of polymer chemical flame retardants, can solve problems such as low temperature resistance, large influence on material mechanical properties, and large amount of flame retardants, so as to achieve good flame retardant effect , little impact on the mechanical properties of the material, and high flame retardant efficiency

Active Publication Date: 2015-01-07
CHENGDU TALY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In order to solve the above technical problems, the present invention provides an intumescent anti-dripping flame retardant, which solves the defects of traditional flame retardants such as large amount of addition, great influence on the mechanical properties of materials, and inability to withstand high temperatures. The defect of flame retardant is a new type, environmental protection and high-efficiency composite flame retardant; the preparation method is simple, convenient and operable

Method used

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  • Expansive type dripping-resistant flame retardant and preparation method thereof
  • Expansive type dripping-resistant flame retardant and preparation method thereof
  • Expansive type dripping-resistant flame retardant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] Take 1.9Kg of ethylene glycol, 2.2Kg of hydroxymethylphenylphosphorous acid and 2.5Kg of 2-carboxyethylphenylphosphorous acid into the reaction kettle, raise the temperature to 80°C, blow in nitrogen, and esterify at 140°C for 3~ 5h, then react under reduced pressure at 160°C and -0.01~-0.096MPa for 3~6h, the esterification rate is above 99%, stop the reaction when no fraction is produced, cool down to 120°C, and discharge to obtain flame retardant esterification liquid.

[0064] Based on the mass of the flame retardant esterification solution, take 4.3Kg of the flame retardant esterification solution, 1.14Kg of hexamethylenediamine and 3.6kg of ethanol into the reaction kettle, raise the temperature to 60°C, blow in nitrogen, and react at 120°C for 3~5h , and then react under reduced pressure at -0.01~-0.096MPa for 3~6h, when the solid content is about 82%, stop the reaction to obtain an intumescent flame retardant.

[0065] Calculated based on the mass of the intumes...

Embodiment 2

[0067] Take 1.53Kg of ethylene glycol and 3.9Kg of hydroxyethylphenyl hypophosphorous acid into the reaction kettle, raise the temperature to 80°C, blow in nitrogen, and esterify at 100°C for 3~5h, then at 160°C, -0.01~-0.096MPa Reaction under reduced pressure for 3~6 hours, the esterification rate is above 99%, stop the reaction when no distillate is produced, lower the temperature to 120°C, discharge the material, and obtain a flame retardant esterification liquid.

[0068] Based on the mass of the flame retardant esterification solution, take 3.9Kg of the flame retardant esterification solution, 0.55Kg of ethylenediamine and 2.8kg of ethanol into the reaction kettle, raise the temperature to 60°C, blow in nitrogen, and react at 120°C for 3~5h , and then react under reduced pressure at -0.01~-0.096MPa for 3~6h, when the solid content is 90%, stop the reaction to obtain an intumescent flame retardant.

[0069] Based on the mass of the intumescent flame retardant, add 2% of...

Embodiment 3

[0072] Take 0.72Kg of ethylene glycol and 1.65Kg of hydroxymethylphenyl hypophosphorous acid into the reaction kettle, raise the temperature to 80°C, blow in nitrogen, and esterify at 150°C for 3~5h, then at 170°C, -0.01~-0.096MPa Reaction under reduced pressure for 3~6 hours, the esterification rate is above 99%, and when no fraction is produced, stop the reaction, lower the temperature to 100°C, and discharge the material to obtain a flame-retardant esterification liquid.

[0073] Based on the mass of the flame retardant esterification solution, take 2.0Kg of the flame retardant esterification solution, 0.36Kg of propylenediamine and 1.32kg of ethanol into the reaction kettle, raise the temperature to 60°C, blow in nitrogen, and react at 100°C for 3~5h , and then react under reduced pressure at -0.01~-0.096MPa for 3~6h, when the solid content reaches 85%, stop the reaction to obtain an intumescent flame retardant.

[0074] Based on the mass of the intumescent flame retardant...

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Abstract

The invention relates to a method for preparing an expansive type dripping-resistant flame retardant. The method is characterized by comprising the following steps: mixing phosphorus-containing copolymerization type flame retardant and dihydric alcohol, reacting under the conditions of the temperature of 70-170 DEG C and the pressure of 0.01MPa below zero to 0.096MPa below zero for 4-10 hours, thereby preparing a flame-retardant esterification fluid; and enabling the flame-retardant esterification fluid to react with diamine and ethanol under the conditions of the temperature of 60-140 DEG C and the pressure of 0.01MPa below zero to 0.096MPa below zero for 4-10 hours, adding a dripping-resistant agent and an inorganic flame retardant, thereby preparing the expansive type dripping-resistant flame retardant. The expansive type dripping-resistant flame retardant prepared by the invention has the advantages of high flame retardant efficiency, high temperature resistance, dripping resistance, smoke suppression and small influence on mechanical properties of materials, the flame retardant grade reaches the V-0 level in the UL-94 standard, and the limit oxygen index is over 32 percent. The expansive type dripping-resistant flame retardant can be used for flame-retardant nylon, polyesters and other engineering plastics, also can be applied to the field of fiber textiles and has wide market prospects.

Description

technical field [0001] The invention belongs to the field of polymer chemical flame retardants, in particular to an expansion type anti-dropping flame retardant and a preparation method thereof. Background technique [0002] With the wide application of polymer materials, the potential danger of fire is increasing day by day. Actively developing and researching new polymer flame retardant materials to improve the safety conditions of social production and life has attracted widespread attention from the whole society. [0003] People pay too much attention to the improvement of flame retardancy of flame retardant materials, but not enough attention is paid to the molten droplets produced during the combustion process. When the material is burned, a large number of molten droplets can be used as a second fire source to accelerate the spread of the fire and expand the scope of the fire. Therefore, the anti-dripping properties of flame retardants cannot be ignored. In additio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G69/44C08L77/12C08L27/18C08K3/36C08K3/22C08K5/3492C08K3/34C08K3/38C08K5/5415C08L77/06
Inventor 张先银汪丹陈群跃黄旭陶云峰方辉
Owner CHENGDU TALY TECH CO LTD
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