Phosphorus nitrogen hybridization synergistic intumescent flame retardant and preparation method thereof

An intumescent flame retardant and hybridization technology, which is applied in the field of phosphorus nitrogen hybridized synergistic intumescent flame retardant and its preparation, can solve the problems of damage to the mechanical properties of the matrix polymer and the difficulty of good dispersion of graphene oxide, etc. Large-scale preparation, remarkable combustion effect, and improved combustion effect

Active Publication Date: 2018-05-04
青岛合家兴工贸有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Most of the previous reports simply mixed graphene oxide with other flame retardants and applied them to polymers. Although the flame retardant

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0024] Example 1

[0025] A synergistic expansion flame retardant, according to mass percentage, includes the following components:

[0026] Cyanuric chloride 12.2%

[0027] Bisphenol A 30.4%

[0028] Diisopropylethylamine 19.4%

[0029] Melamine orthophosphate 16%

[0030] Graphene oxide 22%

[0031] Among them, the diameter of graphene oxide is 0.1 µm, the number of layers is 5, and the thickness is 2 nm.

[0032] A method for preparing the above-mentioned phosphazepine synergistic intumescent flame retardant includes the following steps:

[0033] (1) In the reactor, add cyanuric chloride, bisphenol A and melamine orthophosphate into tetrahydrofuran according to the ratio, stir until completely dissolved, and pour the dispersed graphene oxide THF solution into the above reactor in;

[0034] (2) Add diisopropylethylamine THF solution while stirring, and react for 2.5 hours;

[0035] (3) Remove the solvent and wash with deionized water twice;

[0036] (4) After purification by silica gel colu...

Example Embodiment

[0039] Example 2

[0040] A synergistic intumescent flame retardant, in terms of mass percentage, includes the following components:

[0041] Cyanuric chloride 18.4%

[0042] Bisphenol S 34.3%

[0043] Diisopropylethylamine 20.4%

[0044] Melamine polyphosphate 11.2%

[0045] Graphene oxide 15.7%

[0046] Among them, the diameter of graphene oxide is 3µm, the number of layers is 3, and the thickness is 1.5nm.

[0047] A method for preparing the above-mentioned phosphazepine synergistic intumescent flame retardant includes the following steps:

[0048] (1) In the reactor, add cyanuric chloride, bisphenol S, and melamine polyphosphate into tetrahydrofuran according to the ratio, stir until completely dissolved, and pour the dispersed graphene oxide THF solution into the above reactor in;

[0049] (2) Add diisopropylethylamine THF solution while stirring, and react for 2 hours;

[0050] (3) Remove the solvent and wash with deionized water 3 times;

[0051] (4) After purification by silica gel co...

Example Embodiment

[0054] Example 3

[0055] A synergistic intumescent flame retardant, in terms of mass percentage, includes the following components:

[0056] Cyanuric chloride 12%

[0057] Bisphenol S 15%

[0058] Bisphenolic acid 20%

[0059] Diisopropylethylamine 18%

[0060] Melamine cyanurate 10.5%

[0061] Dimelamine phosphate 8.0%

[0062] Graphene oxide 16.5%

[0063] Among them, the diameter of graphene oxide is 5µm, the number of layers is one, and the thickness is 1nm.

[0064] A method for preparing the above-mentioned phosphazepine synergistic intumescent flame retardant includes the following steps:

[0065] (1) In the reactor, add melamine cyanurate, bisphenolic acid melamine cyanurate and dimelamine phosphate into tetrahydrofuran in accordance with the proportions in the reactor, stir until completely dissolved, and disperse the prepared Pour the graphene oxide THF solution into the above reactor;

[0066] (2) Add diisopropylethylamine THF solution while stirring, and react for 3 hours;

[0067...

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Abstract

The invention discloses a phosphorus nitrogen hybridization synergistic intumescent flame retardant and a preparation method thereof. The invention provides a synergistic intumescent flame retardant which is formed by an in-situ cross-linking/grafting reaction, has a phosphorus nitrogen hybridization structure and integrates an acid source, a gas source and a carbon source into one whole body. Theretardant can achieve an excellent flame-retarding effect by the physical and chemical flame-retarding process, is low in water absorption and high in stability and can be widely applied to plasticssuch as ABS (Acrylonitrile Butadiene StyreneAcrylonitrile Butadiene Styrene) and the like and an organic foam product.

Description

technical field [0001] The invention belongs to the technical field of polymer flame retardant, and relates to a phosphorus nitrogen hybridized synergistic expansion flame retardant and a preparation method thereof. technical background [0002] Phosphorus-nitrogen intumescent flame retardants are mainly composed of phosphorus and nitrogen, which cause less smoke and toxic gases, and can play an excellent flame-retardant effect. It is considered to be one of the important directions for the future development of flame retardants. The intumescent flame retardant system is generally composed of three parts: acid source (dehydrating agent), carbon source (char forming agent) and gas source (foaming agent). substance. The carbon source is the basis for forming the carbon foam layer. Whether the carbon source is good or not directly determines the flame retardant effect. Graphene oxide is a major carbon source candidate material and is often used as a flame retardant for polyme...

Claims

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Application Information

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IPC IPC(8): C08K9/10C08K3/04C08K5/3492C08K5/41
CPCC08K3/04C08K5/3492C08K5/34928C08K5/41C08K9/10
Inventor 国世鹏
Owner 青岛合家兴工贸有限公司
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