P, N and Si ternary hybrid flame retardant and preparation method thereof

A flame retardant, ternary hybrid technology, applied in the field of P, N, Si ternary hybrid flame retardant and preparation, can solve the problems of cumbersome and harsh preparation process
CN110483577APending Publication Date: 2019-11-22LANZHOU UNIVERSITY OF TECHNOLOGY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
LANZHOU UNIVERSITY OF TECHNOLOGY
Publication Date
2019-11-22

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Abstract

The invention discloses a P, N and Si ternary hybrid flame retardant and a preparation method thereof, and mainly relates to the field of reactive flame retardants. The structural formula is shown inthe specification has the beneficial effects that 4, 4 '-dihydroxy benzophenone and 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide are subjected to a reaction through molecular design so as to obtain 4, 4'-di (diphenoxyphosphate-6-oxy) benzophenone (DODH) to be used as raw materials; 4, 4 '-bis (diphenoxyphosphate-6-oxy) benzhydrol (DODOH) is obtained by using said raw material and using a reducing agent for reduction, and then the phosphorus-containing flame retardant and a silane coupling agent isocyanatopropyltriethoxysilane (IPTS) are mixed. Elements of phosphorus, nitrogen and silicon with flame retardant properties can be introduced into the material by adding the flame retardant into an organic polymer material, so that the material has an efficient synergistic flame retardanteffect.
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Description

technical field

[0001] The invention relates to the technical field of reactive flame retardants, in particular to a P, N, Si ternary hybrid flame retardant and a preparation method thereof. Background technique

[0002] In the synthesis of most organic flame retardants, there will be three elements of P, N and Si. Organophosphorus compounds can improve the flame retardant level of organic polymer materials through various methods such as condensed phase reaction, gas phase reaction, and promotion of carbonization and coke formation. Silicone can generate silicon-containing compounds (such as silicon dioxide) when polymers are burned, and exerts a flame-retardant effect due to its high thermal stability and physical coverage. Organic nitrogen compounds can produce nitrogen, nitrogen oxides and other flammable and non-combustible gases when polymer materials are burned, and reduce the concentration of combustion oxygen to achieve a flame-retardant effect.

[0003] Huijuan W...

Claims

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