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Intercalation type hydrotalcite flame-retardant smoke suppressant and preparation method thereof

A hydrotalcite and smoke suppressant technology, applied in the field of flame retardants, can solve the problem of reducing the flame retardant and smoke suppression efficiency of hydrotalcite, it is difficult for flame retardants to have high flame retardant and smoke suppression and effective enhancement modification, and poor polymer compatibility and other problems, to achieve the effect of reducing secondary pollution, good effect of flame retardant and smoke suppression, and improvement of compatibility

Active Publication Date: 2021-08-10
TAIZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, hydrotalcite has disadvantages such as easy agglomeration and poor compatibility with polymers. It is necessary to organically modify hydrotalcite. Commonly used modifiers include organic acids, various surfactants and coupling agents.
Although the commonly used modifiers improve the mechanical properties of the matrix material, they will reduce the flame retardant and smoke suppression efficiency of hydrotalcite.

Method used

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  • Intercalation type hydrotalcite flame-retardant smoke suppressant and preparation method thereof
  • Intercalation type hydrotalcite flame-retardant smoke suppressant and preparation method thereof
  • Intercalation type hydrotalcite flame-retardant smoke suppressant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Add 1L of distilled water and 100g of hydrotalcite into a stainless steel reaction kettle, ultrasonically disperse for 30 minutes, add 6g of dodecyl sulfopropyl betaine, stir and react at 60°C for 15 hours, and wash the filtered product with distilled water several times. The obtained solid is blast-dried to constant weight to obtain hydrotalcite treated with dodecyl sulfopropyl betaine surface organic treatment.

[0029] Add 100 g of the above-mentioned dodecyl sulfopropyl betaine surface organically treated hydrotalcite into 1 L of distilled water, ultrasonically disperse it for 30 minutes, then transfer it to a three-necked flask equipped with a mechanical stirrer, a thermometer, and a reflux condenser, and add dropwise 3g melamine polyphosphate / hydrochloric acid solution, the pH value is 5.0, stirred and reacted at 25°C for 8 hours, then filtered the suspension obtained by the reaction, washed three times with distilled water, and dried in an oven at 100°C for 24 hou...

Embodiment 2

[0031] Add 1L of distilled water and 100g of hydrotalcite into a stainless steel reactor, ultrasonically disperse for 30 minutes, add 20g of dodecyl sulfopropyl betaine, stir and react at 90°C for 4 hours, wash the filtered product with distilled water several times, The obtained solid is blast-dried to constant weight to obtain hydrotalcite treated with dodecyl sulfopropyl betaine surface organic treatment.

[0032] Add 100 g of the above-mentioned dodecyl sulfopropyl betaine surface organically treated hydrotalcite into 1 L of distilled water, ultrasonically disperse it for 30 minutes, then transfer it to a three-necked flask equipped with a mechanical stirrer, a thermometer, and a reflux condenser, and add dropwise 15g melamine polyphosphate / hydrochloric acid solution, the pH value is 3.0, stirred and reacted at 60°C for 2 hours, then filtered the suspension obtained by the reaction, washed three times with distilled water, and dried in an oven at 100°C for 24 hours to obtai...

Embodiment 3

[0034] Add 1L of distilled water and 100g of hydrotalcite into a stainless steel reaction kettle, ultrasonically disperse for 30 minutes, add 15g of dodecyl sulfopropyl betaine, stir and react at 70°C for 6 hours, and wash the filtered product with distilled water several times. The obtained solid is blast-dried to constant weight to obtain hydrotalcite treated with dodecyl sulfopropyl betaine surface organic treatment.

[0035] Add 100 g of the above-mentioned dodecyl sulfopropyl betaine surface organically treated hydrotalcite into 1 L of distilled water, ultrasonically disperse it for 30 minutes, then transfer it to a three-necked flask equipped with a mechanical stirrer, a thermometer, and a reflux condenser, and add dropwise 8g melamine polyphosphate / hydrochloric acid solution, the pH value is 4.5, stirred and reacted at 45°C for 3 hours, then filtered the suspension obtained by the reaction, washed three times with distilled water, and dried in an oven at 100°C for 24 hou...

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Abstract

The invention discloses an intercalation type hydrotalcite flame-retardant smoke suppressant and a preparation method thereof. The preparation method of the intercalation type hydrotalcite flame-retardant smoke suppressant comprises the following steps of dispersing hydrotalcite evenly in a water phase, conducting ultrasonic dispersion for 30 minutes, adding dodecyl sulfopropyl betaine, conducting stirring reaction at a certain temperature, conducting separation to prepare dodecyl sulfopropyl betaine surface organized hydrotalcite, adding the dodecyl sulfopropyl betaine surface organized hydrotalcite into distilled water, carrying out ultrasonic dispersion, dropwise adding a melamine polyphosphate / hydrochloric acid solution with a pH value of 3.0-5.0, carrying out a stirring reaction at 25-60 DEG C for 2-8 h to obtain a suspension, filtering the suspension obtained by the reaction, conducting washing with distilled water for multiple times, and conducting drying for 24 hours in a drying oven at 100 DEG C to prepare the intercalation type hydrotalcite flame-retardant smoke suppressant. The intercalation type hydrotalcite flame-retardant smoke suppressant does not contain halogen, is good in flame-retardant smoke suppression effect and wide in application range, and meets the environment-friendly requirement.

Description

technical field [0001] The invention relates to the technical field of flame retardants, in particular to an intercalated hydrotalcite flame retardant and smoke suppressant and a preparation method thereof. Background technique [0002] With the advancement of science and technology, people's production and living standards continue to improve, and various polymer materials are used more and more widely, occupying an important position in the national economy. Most polymer materials are flammable, and a large amount of smoke and toxic substances will be released during combustion. Existing studies have shown that more than 90% of deaths in fires are caused by inhalation of smoke and toxic gases. Therefore, solving the problem of smoke suppression in the combustion of polymer materials has become one of the key problems in the field of flame retardancy. Hydrotalcite has the advantages of low toxicity, non-corrosion, low cost, and wide source, and is considered to be the most...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K9/04C08K3/22C08K5/3492C08L23/16
CPCC08K9/04C08K3/22C08K5/34928C08L2201/02C08L2201/22C08L23/16
Inventor 蔡沁伶秦子豪任佳豪吴鑫语骆岚清黄国波常玲
Owner TAIZHOU UNIV
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