Graphene/piperazine pyrophosphate nano composite and preparation method thereof

A technology of piperazine pyrophosphate and nanocomposite, which is applied in chemical instruments and methods, materials for heat exchange, organic chemistry, etc. Low cost, the effect of solving the problem of dispersion

Inactive Publication Date: 2018-12-07
安徽融英新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Aiming at the problem that the flame retardant efficiency of the above-mentioned intumescent flame retardant is greatly affected by inorganic fillers, the first purpose of the present invention is to provide a graphene and intumescent flame retardant in one, with good flame retardant efficiency and thermal conductivity. sexual compound

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  • Graphene/piperazine pyrophosphate nano composite and preparation method thereof
  • Graphene/piperazine pyrophosphate nano composite and preparation method thereof
  • Graphene/piperazine pyrophosphate nano composite and preparation method thereof

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Embodiment 1

[0036] The preparation method of the graphene / piperazine pyrophosphate nanocomposite of the present embodiment comprises the steps:

[0037] Step (1): Add 250mg of GO to 250ml of water, ultrasonically stir GO to make it fully dispersed in water, then add 62.5mg of piperazine, and react at 80°C for 24h to obtain a reaction solution;

[0038] Step (2): Add 73.5 mg of 97% concentrated phosphoric acid to the reaction solution, stir at room temperature for 3 hours to obtain piperazine phosphate salt, separate solid from liquid and wash the resulting solid several times and dry to obtain graphene / piperazine phosphate Salt;

[0039] Step (3): Place the graphene / piperazine phosphate salt obtained in step (2) in a rotary furnace, set the temperature at 230° C., and protect it with nitrogen gas, and heat at a constant temperature for 12 hours to prepare a graphene / piperazine pyrophosphate nanocomposite things.

[0040] The graphene / piperazine pyrophosphate nanocomposite obtained in th...

Embodiment 2

[0042] The preparation method of the graphene / piperazine pyrophosphate nanocomposite of the present embodiment comprises the steps:

[0043] Step (1): Add 250mg of GO to 250ml of water, ultrasonically stir GO to make it fully dispersed in water, then add 62.5mg of piperazine, and react at 80°C for 24h to obtain a reaction solution;

[0044] Step (2): Add 85.75 mg of 97% concentrated phosphoric acid to the reaction solution, stir at room temperature for 3 h to obtain piperazine phosphate salt, separate solid from liquid and wash the resulting solid several times and dry to obtain graphene / piperazine phosphate Salt;

[0045] Step (3): Place the graphene / piperazine phosphate salt obtained in step (2) in a rotary furnace, set the temperature at 230° C., and protect it with nitrogen gas, and heat at a constant temperature for 12 hours to prepare a graphene / piperazine pyrophosphate nanocomposite thing.

[0046] The graphene / piperazine pyrophosphate nanocomposite obtained in this e...

Embodiment 3

[0048] The preparation method of the graphene / piperazine pyrophosphate nanocomposite of the present embodiment comprises the steps:

[0049] Step (1): Add 250mg of GO to 250ml of water, ultrasonically stir GO to make it fully dispersed in water, then add 75mg of piperazine, and react at 80°C for 24h to obtain a reaction solution;

[0050] Step (2): Add 105 mg of 97% concentrated phosphoric acid to the reaction solution, stir at room temperature for 3 h to obtain piperazine phosphate, separate solid from liquid and wash the resulting solid several times and dry to obtain graphene / piperazine phosphate ;

[0051]Step (3): Place the graphene / piperazine phosphate salt obtained in step (2) in a rotary furnace, set the temperature at 230° C., and protect it with nitrogen gas, and heat at a constant temperature for 12 hours to prepare a graphene / piperazine pyrophosphate nanocomposite things.

[0052] The graphene / piperazine pyrophosphate nanocomposite obtained in this embodiment has...

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Abstract

The invention discloses a graphene / piperazine pyrophosphate nano composite and a preparation method thereof. The preparation method comprises the following steps: reacting and grafting piperazine andan epoxy functional group onto graphene oxide GO, adding phosphoric acid to form piperazine phosphate, and finally performing high temperature dehydration, thereby obtaining the graphene / piperazine pyrophosphate nano composite. Due to the existence of graphene, the graphene / piperazine pyrophosphate nano composite disclosed by the invention has excellent flame retardant efficiency and thermal conductivity, and the preparation method is that the graphene oxide GO is introduced into the synthetic process of piperazine pyrophosphate, so that the dispersion problem of the nanometer material is effectively solved. Meanwhile, by utilizing alkalinity of piperazine and strong acid (phosphoric acid) dehydration as well as high-temperature conditions, the graphene oxide GO is reduced, the reduction step in the graphene preparation process is effectively avoided, and the graphene / piperazine pyrophosphate nano-composite is efficiently prepared in an environment-friendly manner at low cost and has excellent industrialization application prospects.

Description

technical field [0001] The invention relates to a graphene / piperazine pyrophosphate nanocomposite and a preparation method thereof. Background technique [0002] The molecular structure of piperazine pyrophosphate contains both the acid source (pyrophosphoric acid) and the carbon source (piperazine) required by intumescent flame retardants. As an intumescent flame retardant, it has high flame retardant efficiency and is especially suitable for Flame retardant modification of olefinic materials. In addition, piperazine pyrophosphate also has the advantages of high thermal stability and good water resistance. Compared with the traditional ammonium polyphosphate (APP) system intumescent flame retardant, the piperazine pyrophosphate system has great advantages in performance, so it has been widely used. [0003] With the rapid development of electronic integration, fast charging and other technologies, the volume of electronic components has shrunk sharply, and at the same tim...

Claims

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Application Information

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IPC IPC(8): C07D295/088C09K5/08C08K9/04C08K3/04
CPCC09K5/08C07D295/088C08K3/042C08K9/04C08K2201/011
Inventor 台启龙
Owner 安徽融英新材料科技有限公司
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