Flame-retardant modified ammonium polyphosphate and preparation method and application thereof

An ammonium polyphosphate and modification technology, which is applied in the field of flame retardant modified ammonium polyphosphate and its preparation, can solve the problems of poor thermal stability and compatibility of substrates, complex synthesis process of carbon-forming agents, environmental and human injury, etc. , to achieve the effect of good flame retardant effect, easy industrial production, simple and convenient operation

Active Publication Date: 2014-04-30
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the carbon forming agent is an important part of the expansion system. Although it can form a stable char layer under the catalysis of the acid source and cover the surface of the substrate to achieve the purpose of flame retardancy, the synthesis process of the carbon forming agent is generally relatively slow. Complex, and most of the solvents used will cause harm to the environment and human body
As another important component of traditional intumescent flame retardants, ammonium polyphosphate (APP) not only makes it an ideal acid in chemical intumescent flame retardant systems because of its high content of phosphorus (P) and nitrogen (N). It can also play the role of part of the gas source, but its water resistance, thermal stability and substrate compatibility are poor, so people's research is mostly focused on how to solve its water resistance, thermal stability and substrate compatibili

Method used

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  • Flame-retardant modified ammonium polyphosphate and preparation method and application thereof
  • Flame-retardant modified ammonium polyphosphate and preparation method and application thereof
  • Flame-retardant modified ammonium polyphosphate and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0044] At room temperature, mix 600 parts of acetone and 6 parts of water as a solvent, add 8.6 parts of piperazine into it and stir to dissolve completely, then add 100 parts of ammonium polyphosphate II, then stir and heat up to 70°C under the protection of nitrogen, react for 2 hours, and filter , washed with acetone and dried to obtain the product with a yield of 90%.

Embodiment 2

[0046] At room temperature, mix 700 parts of methanol and 10.5 parts of water as a solvent, add 17.2 parts of piperazine into it and stir to dissolve completely, then add 100 parts of ammonium polyphosphate II, then stir and raise the temperature to 70°C under the protection of nitrogen, react for 2 hours, and filter , washed with methanol and dried to obtain the product with a yield of 89%.

Embodiment 3

[0048] At room temperature, mix 700 parts of ethanol and 14 parts of water as a solvent, add 51.6 parts of piperazine into it and stir to dissolve completely, then add 100 parts of ammonium polyphosphate II, then stir and raise the temperature to 80°C under the protection of nitrogen, react for 3 hours, and filter , washed with ethanol and dried to obtain the product with a yield of 85%.

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Abstract

The invention discloses flame-retardant modified ammonium polyphosphate which has the following structural general formula: (img file='DDA0000446234650000011.TIF' wi='1650' he='1656' /). The invention also discloses a method for preparing the flame-retardant modified ammonium polyphosphate as well as application of adding the flame-retardant modified ammonium polyphosphate into polyolefin or epoxy resins. The flame-retardant modified ammonium polyphosphate provided by the invention has the effects of acid source and air source, also has a novel carbon source effect, can be independently taken as a flame retardant to be applied to a high polymer material and is small in addition amount and good in flame-retardant effect. Moreover, the flame-retardant modified ammonium polyphosphate is mature in preparation method, simple and convenient in operation, easy to control and convenient for industrial production.

Description

technical field [0001] The invention belongs to the technical field of flame-retardant ammonium polyphosphate and its application, and in particular relates to a flame-retardant modified ammonium polyphosphate and its preparation method and application. Background technique [0002] High molecular polymers are widely used due to their good properties, such as mechanical properties and machinability. However, with the widening of the application range, flammability has become one of the reasons that limit its further application. In order to improve the flammability of polymers, people began to add compound systems that can prevent them from burning. In the existing compound flame retardant system, intumescent flame retardant is currently recognized as an environmentally friendly and efficient flame retardant for high molecular polymers. [0003] The traditional intumescent flame retardant system mainly consists of three components: acid source, gas source and carbon source...

Claims

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Application Information

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IPC IPC(8): C08K9/04C08K3/32C08L23/00C08L63/00
Inventor 王玉忠邵珠宝廖世甫谭翼邓聪陈力
Owner SICHUAN UNIV
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