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Metal hybrid POSS flame retardant as well as preparation method and application thereof

A flame retardant and hybrid technology, which is applied in the field of metal hybrid POSS flame retardants, can solve the problems such as non-existence, and achieve the effects of good catalytic carbonization, high innovation and high thermal stability.

Active Publication Date: 2020-01-07
XIAMEN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] But now, there is no effective combination of the three to ensure that the DOPO group, which also has flame retardant properties, is connected to the amino group on POSS to improve the flame retardancy of the polymer.

Method used

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  • Metal hybrid POSS flame retardant as well as preparation method and application thereof
  • Metal hybrid POSS flame retardant as well as preparation method and application thereof
  • Metal hybrid POSS flame retardant as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] 1. Preparation of metal hybrid POSS flame retardant

[0031] (1) NH 2 -Synthesis of POSS-triOH

[0032] 2g (2mmol) of oligomeric polyhedral silsesquioxane (POSS-NH 2 ) was dissolved in 50 mL of tetrahydrofuran (the first organic solvent), and then the temperature was raised to 66° C. under rapid stirring. 360 μL (0.8 mmol) of tetraethylammonium hydroxide solution (organic strong base) was added, and after reacting for 5 hours, a certain concentration of hydrochloric acid solution (acid solution) was used to adjust the pH of the mixed liquid to be neutral (pH=7). Then rotary evaporation removes tetrahydrofuran, then dissolves in 50mL of dichloromethane (the second organic solvent), adds a certain amount of anhydrous magnesium sulfate (desiccant) to the mixed liquid obtained, stirs and dries for 15min, and filters off the desiccant after 15min. After the filtrate was concentrated, it was slowly added dropwise to acetonitrile (the third organic solvent). Then it was le...

Embodiment 2

[0046] 1. Preparation of metal hybrid POSS flame retardant

[0047] (1) NH 2 -Synthesis of POSS-triOH

[0048] 2g (2mmol) of oligomeric polyhedral silsesquioxane (POSS-NH 2 ) was dissolved in 50 mL of tetrahydrofuran, and then the temperature was raised to 66° C. under rapid stirring. 360 μl (0.8 mmol) of tetraethylammonium hydroxide solution was added, and after reacting for 5 hours, a certain concentration of hydrochloric acid solution was used to adjust the pH value of the mixed liquid to be neutral. Then the tetrahydrofuran was removed by rotary evaporation, and then dissolved in 50 mL of dichloromethane, a certain amount of anhydrous magnesium sulfate was added to the obtained mixed liquid, stirred and dried for 15 minutes, and then the desiccant was filtered off, and the filtrate was concentrated and slowly added dropwise to acetonitrile. Then it was left to stand at low temperature to obtain a white precipitate, and after filtration, the intermediate product NH 2 -P...

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Abstract

The invention discloses a metal hybrid POSS flame retardant as well as a preparation method and application thereof. The chemical structural formula of the metal hybrid POSS flame retardant is shown in the specification, wherein R is -H or a group disclosed in the invention. The metal hybrid POSS flame retardant is obtained by taking oligomeric polyhedral silsesquioxane (POSS-NH2) as a raw material through vertex-opening, vertex-capping and nucleophilic substitution chemical reaction. The synthesized POSS derivative simultaneously contains three flame-retardant elements, namely silicon, phosphorus and zirconium, and can be used as an efficient flame retardant to modify various polymers, so that the application range of the polymers is expanded.

Description

technical field [0001] The invention relates to a metal hybrid POSS flame retardant, a preparation method and an application. Background technique [0002] Oligomeric polyhedral silsesquioxane POSS-NH 2 It is an important class of nano-hybrid organic-inorganic compounds with a cage structure composed of silicon and oxygen, with a size of 1-3nm and can be considered as the smallest silicon-containing particle. Silicon-containing materials are promising for the preparation of molecularly dispersed nanocomposites due to their inorganic Si-O frameworks being close to silicon. It is worth noting that the Si atoms at the cage corners of each POSS molecule may be connected with reactive or non-reactive organic groups, which makes the POSS nanostructures and polymers compatible. Polymers modified by POSS derivatives have high strength, good corrosion resistance and excellent thermal stability, etc., so that such compounds have wide application potential in the field of hybrid nano...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G77/395C08G77/398C08G77/06C08L83/08C08L63/00C08L23/12C08L23/06
CPCC08G77/045C08L23/06C08L23/12C08L63/00C08L2201/02C08L2207/066C08L83/08
Inventor 戴李宗吴海洋曾碧榕刁雪峰洪静武彤王潇周瑞瑞李云同罗伟昂
Owner XIAMEN UNIV
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