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Ammonium polyphosphate flame retardant as well as preparation method and application thereof

A technology of ammonium polyphosphate and flame retardant, which is applied in the field of flame retardant materials to achieve the effects of good thermal stability, stable viscosity and excellent processing performance

Active Publication Date: 2022-02-08
SHIFANG CHANGFENG CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Although the above-mentioned prior art provides the technical revelation of achieving good compatibility through cross-linking reactions, and the technical revelation of converting hydrophilic hydroxyl groups into ester groups through esterification to improve water resistance, how to apply the technical inspiration In ammonium polyphosphate, and the preparation of ammonium polyphosphate flame retardants suitable for use in coatings and other matrix materials requires further research

Method used

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  • Ammonium polyphosphate flame retardant as well as preparation method and application thereof
  • Ammonium polyphosphate flame retardant as well as preparation method and application thereof
  • Ammonium polyphosphate flame retardant as well as preparation method and application thereof

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Embodiment 1

[0038] The present embodiment provides a kind of preparation method of ammonium polyphosphate flame retardant, comprises the steps:

[0039] Preparation of ammonium phosphate salt containing triazine ring in S1:

[0040] Replace the air in the reactor with nitrogen for 15 minutes, put 55.2kg of trishydroxyethyl isocyanurate and 44.8kg of phosphorus pentoxide into the reactor, stir and raise the temperature to 80°C; open the ammonia flow, the ammonia flow is 6.5m 3 / h, the ammonia passing time is 4h; at the same time as the ammonia passing, open the interval spray to add water, the interval time is 5 minutes, the amount of water added each time is 50g, and the total amount of water added is 2kg; after the reaction is completed, the ammonium phosphate salt containing the triazine ring is prepared, and then opened Reactor, the material is cooled and crushed for later use.

[0041] S2 Polymerization:

[0042] Replace the air in the kneader with nitrogen for 10 minutes, put into ...

Embodiment 2

[0045] The present embodiment provides a kind of preparation method of ammonium polyphosphate flame retardant, comprises the steps:

[0046] Preparation of ammonium phosphate salt containing triazine ring in S1:

[0047] Replace the air in the reactor with nitrogen for 15 minutes, put 55.2kg of trishydroxyethyl isocyanurate and 44.8kg of phosphorus pentoxide into the reactor, stir and raise the temperature to 80°C; open the ammonia flow, the ammonia flow is 6.5m 3 / h, the ammonia passing time is 4h; open the spray and add water while passing the ammonia, open the interval spray and add water while passing the ammonia, the interval time is 5 minutes, the amount of water added each time is 50g, and the total amount of water added is 2.0kg; The ammonium phosphate salt of oxazine ring, then open the reaction kettle, the material is cooled and crushed for later use.

[0048] S2 Polymerization:

[0049] Replace the air in the kneader with nitrogen for 10 minutes, put into the knea...

Embodiment 3

[0052] The present embodiment provides a kind of preparation method of ammonium polyphosphate flame retardant, comprises the steps:

[0053] Preparation of ammonium phosphate salt containing triazine ring in S1:

[0054] Replace the air in the reactor with nitrogen for 15 minutes, put 55.2kg of trishydroxyethylisocyanurate and 44.8kg of phosphorus pentoxide into the reactor, stir and heat up to 100°C; open the ammonia flow, the amount of ammonia flow is 5.0m 3 / h, the time of passing ammonia is 5h; when passing ammonia, open interval spraying and add water, the interval time is 5 minutes, the amount of water added each time is 50g, and the total amount of water added is 2.0kg; the reaction is completed and the ammonium phosphate salt containing triazine ring is obtained, Open the reaction kettle, the material is cooled and crushed for later use.

[0055] S2 Polymerization:

[0056] Replace the air in the kneader with nitrogen for 10 minutes, put into the kneader 25 kg of amm...

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Abstract

The invention relates to the field of flame retardant materials, and provides an ammonium polyphosphate flame retardant and a preparation method of the flame retardant. The preparation method comprises the steps of S1, preparing triazine ring-containing ammonium phosphate, specifically, mixing trihydroxyethyl isocyanurate and phosphorus pentoxide, introducing ammonia and adding water for reaction to obtain the triazine ring-containing ammonium phosphate; and S2, conducting polymerization reaction, specifically, mixing the triazine ring-containing ammonium phosphate prepared in the step S1, diammonium hydrogen phosphate and phosphorus pentoxide, and continuously introducing ammonia for reaction to obtain the ammonium polyphosphate flame retardant. The ammonium polyphosphate flame retardant disclosed by the invention has excellent performance such as water resistance, migration resistance and good compatibility.

Description

technical field [0001] The invention relates to the field of flame retardant materials, in particular to an ammonium polyphosphate flame retardant, its preparation method and application. Background technique [0002] As one of the most widely used intumescent flame retardant materials, ammonium polyphosphate can be used as a flame retardant for coatings, plastics, and rubber. It is favored by practitioners because of its high phosphorus-to-nitrogen ratio, and it also has the functions of acid source and gas source of various intumescent flame retardants. [0003] However, ammonium polyphosphate has problems such as easy moisture absorption, moisture absorption, and poor compatibility with resins, and due to the poor compatibility between ammonium polyphosphate and the substrate, it further leads to a decrease in the mechanical properties of the polymer, making it widely used in practical applications. restricted in. [0004] At present, the method of surface coating treat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G79/04C07F9/6521C08L67/02C08L23/12C08L85/02C08K5/521
CPCC08G79/04C07F9/6521C08L67/02C08L23/12C08K5/521C08L2201/02C08L85/02
Inventor 刘大才杨劲松杨滨詹强
Owner SHIFANG CHANGFENG CHEM CO LTD
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