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Novel intumescent flame-retardant char-forming agent, and preparation method thereof

A technology of intumescent flame retardant and carbon forming agent, which is applied in the field of intumescent flame retardants to achieve the effect of improving flame retardant efficiency

Active Publication Date: 2019-08-23
ANHUI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no report on the new carbon-supporting agent combining pentaerythritol (PER) and trihydroxyethyl isocyanurate (THEIC) structure.

Method used

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  • Novel intumescent flame-retardant char-forming agent, and preparation method thereof
  • Novel intumescent flame-retardant char-forming agent, and preparation method thereof
  • Novel intumescent flame-retardant char-forming agent, and preparation method thereof

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Embodiment Construction

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0032] The present invention provides a novel intumescent flame retardant charring agent. The structural formula of the novel intumescent flame retardant charring agent is as follows:

[0033]

[0034] where n=1-3.

[0035] The reaction equation of the new intumescent flame retardant char-forming agent is as follows:

[0036] First step response:

[0037]

[0038] Second step reaction:

[0039]

[0040] where n=1-3.

[0041] The preparation method of n...

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Abstract

The invention discloses a novel intumescent flame-retardant char-forming agent, and a preparation method thereof. The structure of the novel intumescent flame-retardant char-forming agent is disclosedin the invention, wherein n=1-3. The preparation method comprises following steps: 1, pentaerythritol and a precursor solution A are mixed, and are added into a solvent, and stirring is carried out for 9h at 100 DEG C so as to obtain a precursor B; 2, the reaction temperature of the precursor B is increased to 110 DEG C, continuous reaction is carried out for 1h, then the temperature is increasedto 150 DEG C, tris(hydroxyethyl) isocyanate is added into the precursor B, a catalyst is added at the same time, dehydration reaction is carried out for 12h with stirring so as to obtain a light yellow solid product. The novel intumescent flame-retardant char-forming agent is used for polypropylene flame retardation, and compared with a conventional APP / PER system, the advantages is that the flame retardation efficiency is obviously increased.

Description

technical field [0001] The invention belongs to the technical field of intumescent flame retardants, and in particular relates to a novel intumescent flame retardant char-forming agent and a preparation method thereof. Background technique [0002] Intumescent flame retardant technology (IFR) is an efficient and environmentally friendly polymer flame retardant technology with good application prospects. A typical intumescent flame retardant consists of an acid source, a gas source and a char former. At present, because ammonium polyphosphate (APP) can play the role of efficient acid source and gas source at the same time, it has been widely accepted in research and application, and the space for further exploration is limited. Therefore, in order to further improve the flame retardant efficiency of IFR, it is an important breakthrough in this field to design and synthesize a new structure and high-efficiency char-forming agent. [0003] IFR composed of ammonium polyphospha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K5/521C08K9/10C08K3/32C08L23/12C07F9/6521
CPCC07F9/6521C08K3/32C08K5/521C08K9/10C08K2003/323C08L2201/02C08L23/12C07F9/65583C08K5/0066C08K5/529
Inventor 董翔聂士斌刘松
Owner ANHUI UNIV OF SCI & TECH
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