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Hydrotalcite composite flame retardant and preparation method thereof

A composite flame retardant and hydrotalcite technology, applied in the field of flame retardants, can solve the problems of poor thermal stability and affect the flame retardant performance of nano-composite materials, and achieve good flame retardant effect, reduce secondary harm, and reduce costs. Effect

Active Publication Date: 2015-12-30
浙江百纳橡塑设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the organically treated hydrotalcite can be well dispersed in the polymer, the intercalation agent used is often a long carbon chain organic anion compound (such as sodium lauryl sulfate) with poor thermal stability and no flame retardant effect. ), thus affecting the flame retardancy of polymer / hydrotalcite nanocomposites

Method used

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  • Hydrotalcite composite flame retardant and preparation method thereof
  • Hydrotalcite composite flame retardant and preparation method thereof
  • Hydrotalcite composite flame retardant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Mix 1.31g of 6-aminocaproic acid and 10mL of sodium hydroxide with a concentration of 1.0mol / L to form a 6-aminocaproic acid sodium solution, then add 0.8L of distilled water and 97g of hydrotalcite to a 1L stainless steel reactor, and heat to 80 ℃ and vigorously stirred for 2 hours, added the above sodium 6-aminocaproate solution, stirred vigorously at 90℃ for 12 hours, washed the product obtained by filtration with distilled water several times, dried the obtained solid in vacuum to constant weight, and obtained aminocaproic acid Acid-modified hydrotalcite.

[0024] Add 9.816g of aminocaproic acid modified hydrotalcite to 100mL of toluene, ultrasonically disperse for 30 minutes, transfer it to a dry four-necked flask equipped with a mechanical stirrer, a thermometer, a reflux condenser, and a dropping funnel, and add dropwise 0.184g of 2- Mixture of oxo-2-chloro-5,5-dimethyl-1,3,2-dioxaphosphorinane and 10mL toluene, stirred and reacted at 15°C for 6 hours, then filte...

Embodiment 2

[0026] Mix 0.414g of 6-aminocaproic acid and 3.2mL of sodium hydroxide with a concentration of 1.0mol / L to form a 6-aminocaproic acid sodium solution, then add 0.8L of distilled water and 91g of hydrotalcite to a 1L stainless steel reactor, and heat to Stir vigorously at 90°C for 2 hours, add the above sodium 6-aminocaproate solution, stir vigorously at 90°C for 12 hours, wash the product obtained by filtration with distilled water several times, and dry the obtained solid in vacuum to constant weight to obtain Aminocaproic acid modified hydrotalcite.

[0027] Add 9.448g of aminocaproic acid modified hydrotalcite to 100mL of toluene, ultrasonically disperse for 30 minutes, transfer it to a dry four-necked flask equipped with a mechanical stirrer, a thermometer, a reflux condenser and a dropping funnel, and drop 0.552g of 2- Mixture of oxo-2-chloro-5,5-dimethyl-1,3,2-dioxaphosphorinane and 10mL toluene, stirred and reacted at 5°C for 10 hours, then filtered the suspension obtai...

Embodiment 3

[0029] Mix 13.8g of 6-aminocaproic acid and 100.5mL of sodium hydroxide with a concentration of 1.0mol / L to form a 6-aminocaproic acid sodium solution, then add 0.8L of distilled water and 70g of hydrotalcite to a 1L stainless steel reaction kettle, and heat to Stir vigorously at 80°C for 2 hours, add the above sodium 6-aminocaproate solution, stir vigorously at 80°C for 12 hours, wash the product obtained by filtration with distilled water at 80°C for several times, and dry the obtained solid in vacuum at 70°C to constant weight to obtain aminocaproic acid modified hydrotalcite.

[0030] Add 7.96g of aminocaproic acid modified hydrotalcite into 100mL of toluene, ultrasonically disperse it for 30 minutes, transfer it to a dry four-necked flask equipped with a mechanical stirrer, a thermometer, a reflux condenser and a dropping funnel, and add dropwise 1.84g of 2- Mixture of oxo-2-chloro-5,5-dimethyl-1,3,2-dioxaphosphorinane and 45mL toluene, stirred and reacted at 30°C for 7 h...

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Abstract

The invention relates to a flame retardant, in particular to a hydrotalcite composite flame retardant and a preparation method thereof. The structure of the hydrotalcite composite flame retardant is shown as a formula (I); in the formula (I), a stick represents hydrotalcite, a compound inserted between layers of the hydrotalcite is an intumescent flame retardant, and the mass content of the intumescent flame retardant is 5 to 30 percent. The flame retardant is halogen-free, good in flame retardant effect, wide in application scope and accordant to environmental requirements.

Description

technical field [0001] The invention relates to a flame retardant, in particular to a hydrotalcite composite flame retardant and a preparation method thereof. Background technique [0002] Intumescent flame retardant, as a kind of halogen-free flame retardant, is widely used in flame retardant polymers with the rise of flame retardant technology. When the polymer containing this type of flame retardant is heated, a uniform layer of carbon can be formed on the surface The high-quality foam layer plays the role of heat insulation, oxygen insulation, smoke suppression, and prevents the phenomenon of dripping, and has good flame retardant performance. Intumescent flame retardants generally use phosphorus and nitrogen as the main flame retardant element, and there are usually two types: mixed type and single-component type. The mixed type intumescent flame retardant is made by mixing carbon source, acid source, and gas source compounds in a certain proportion. Flame retardant, o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K9/04C08K3/34C08L75/04
Inventor 刘义林项军伟
Owner 浙江百纳橡塑设备有限公司
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