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Ammonium polyphosphate flame retardant and preparing method thereof

A technology of ammonium polyphosphate and flame retardant, which is applied in the field of flame retardants and can solve problems such as poor synergistic flame retardant effect, poor compatibility, and poor thermal stability

Active Publication Date: 2015-11-11
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the chemical structure characteristics of ammonium polyphosphate itself, ammonium polyphosphate also has many defects as a flame retardant additive, such as poor thermal stability and poor compatibility, and poor flame retardant effect, which has become a shackle that limits its wide application.

Method used

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  • Ammonium polyphosphate flame retardant and preparing method thereof
  • Ammonium polyphosphate flame retardant and preparing method thereof
  • Ammonium polyphosphate flame retardant and preparing method thereof

Examples

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preparation example Construction

[0041] The present invention also provides a kind of preparation method of ammonium polyphosphate flame retardant, it is characterized in that, comprises the following steps:

[0042] A) After the carbon nitride and the solvent are ultrasonically stirred, a dispersion is obtained;

[0043]B) After mixing and reacting the dispersion liquid obtained in the above step A) with ammonium polyphosphate, an ammonium polyphosphate flame retardant is obtained.

[0044] In the present invention, carbon nitride, solvent and ammonium polyphosphate are used as raw materials, carbon nitride and solvent are assisted by ultrasound to obtain dispersion liquid, and carbon nitride is used as the surface coating layer, and ammonium polyphosphate is used as the inner core. Ammonium polyphosphate flame retardant, which is a kind of halogen-free flame retardant.

[0045] In the present invention, the carbon nitride and the solvent are ultrasonically stirred to obtain a dispersion liquid; the mass ra...

Embodiment 1

[0052] Add 5.3 g of carbon nitride into a 1000 ml three-necked flask, then add 400 g of isopropanol into the three-necked flask, and perform ultrasonic stirring for 4 hours to obtain a dispersion.

[0053] Then add 100 grams of ammonium polyphosphate to the above dispersion, raise the temperature to 100°C, stir and react for 10 hours at the same time, then cool the dispersion to room temperature, suction filter and dry, and dry the filter cake at 80°C for 7 hours to obtain Ammonium polyphosphate flame retardant CNAPP5.

[0054] The ammonium polyphosphate flame retardant CNAPP5 prepared by the above steps is scanned by scanning electron microscope, see figure 2 , figure 2 It is the SEM scanning electron microscope picture of the ammonium polyphosphate flame retardant prepared in Example 1. see figure 1 , figure 1 It is the SEM scanning electron microscope picture of uncoated ammonium polyphosphate. Depend on figure 1 with figure 2 It can be seen from the comparison th...

Embodiment 2

[0057] 11.1 g of carbon nitride was added into a 2000 ml three-necked flask, and 900 g of isopropanol was added into the three-necked flask, and ultrasonically stirred for 4.5 hours to obtain a dispersion.

[0058] Then add 100 grams of ammonium polyphosphate to the above dispersion, raise the temperature to 100°C, stir and react for 16 hours at the same time, then cool the dispersion to room temperature, suction filter and dry, and dry the filter cake at 70°C for 8 hours to obtain Ammonium polyphosphate flame retardant CNAPP10.

[0059] The ammonium polyphosphate flame retardant CNAPP10 prepared by the above steps is scanned by scanning electron microscope, see image 3 , image 3 SEM electron microscope scanning picture of the ammonium polyphosphate flame retardant prepared for Example 2. Depend on image 3 It can be seen that the carbon nitride-coated ammonium polyphosphate flame retardant prepared in Example 2 of the present invention has a rough surface and is complete...

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Abstract

The invention provides an ammonium polyphosphate flame retardant. The ammonium polyphosphate flame retardant is characterized by comprising the ammonium polyphosphate flame retardant comprises carbon nitride and ammonium polyphosphate, and the mass percent of the carbon nitride and the ammonium polyphosphate is 0.05-0.45 to 1. The average grain size of the prepared compound halogen-free flame retardant is not obviously increased compared with that of ammonium polyphosphate, the carbon nitride on the surface layer is evenly scattered, the content of residual char is remarkably increased, and good heat stability is achieved; meanwhile, the ammonium polyphosphate flame retardant can be used as synergistic flame-retardant of polyolefin, polystyrene and other high polymer materials and has good compatibility, and flame retardant efficiency is improved obviously.

Description

technical field [0001] The invention belongs to the technical field of flame retardants, in particular to an ammonium polyphosphate flame retardant and a preparation method thereof. Background technique [0002] With the society's increasing emphasis on safe production and the safety needs of daily life, more and more functional materials and functional additives have been developed to prevent fires and protect people's lives and property. Among them, flame retardants It is a very important functional additive in flame retardant technology. [0003] Flame retardant is a special chemical additive used to improve the combustion performance of flammable and combustible materials. It is widely used in the flame retardant processing of various decoration materials. Materials processed with flame retardants can effectively prevent, delay or terminate the spread of flames when attacked by external fire sources, so as to achieve the effect of flame retardancy. In essence, it can ma...

Claims

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Application Information

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IPC IPC(8): C08K9/10C08K9/02C08K3/32C08K3/28
Inventor 胡源施永乾桂宙汪碧波
Owner UNIV OF SCI & TECH OF CHINA
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