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A preparation method of nano-α-zirconium phosphate-supported graphene oxide flame retardant

A technology of zirconium phosphate and graphene, applied in the direction of chemical instruments and methods, inorganic chemistry, carbon compounds, etc., can solve the problems of reducing flame retardant efficiency, poor thermal oxidation stability, weakening physical barriers, etc., to improve flame retardant efficiency, Low cost, enhanced physical barrier effect

Inactive Publication Date: 2018-12-18
TONGJI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, according to literature reports [P. Liu, Y. Huang and X. Zhang, Superparamagnetic NiFe 2 o 4 particles on poly(3,4-ethylenedioxythiophene)- graphene: Synthesis, characterization and their excellent microwave absorption properties. Composites science and technology, 2014, 95, 107-113. ], in the process of polymer combustion, simple graphene due to Its poor thermo-oxidative stability during combustion weakens the physical barrier in the polymer body during combustion and reduces its flame retardant efficiency

Method used

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  • A preparation method of nano-α-zirconium phosphate-supported graphene oxide flame retardant
  • A preparation method of nano-α-zirconium phosphate-supported graphene oxide flame retardant

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Embodiment 1

[0025] The preparation scheme of nano-α-zirconium phosphate supported graphene oxide (Zrp / GO) flame retardant is as follows: the present invention synthesizes graphene oxide by Hummers method, is about 2 g graphite and 2 g NaNO 3 into a three-necked flask, and then slowly add 80 ml H under an ice-water bath 2 SO 4 , after low-temperature intercalation oxidation for 2 h, slowly add 10 g potassium permanganate, then stir at 35 °C for 2 h, then slowly add 5% H 2 SO 4 Solution 200 ml (red), react at 60°C for 2 h after addition, then add a certain amount of H 2 o 2 React at 90°C for 1 h, and finally add 1 L of distilled water to continue the reaction for 1 h, the system is golden yellow, then centrifuge the obtained graphene oxide with 5% HCl and distilled water until the sulfuric acid in the graphene oxide is washed away root ions, dried, and then disperse graphene oxide in deionized aqueous solution to obtain a solution of graphene oxide (3 mg / ml).

[0026] 1 g zirconium oxy...

Embodiment 2

[0028] 0.5 g zirconium oxychloride (ZrOCl 2 ·8H 2 O) Dissolve in 6 ml of deionized water, then slowly add 12 ml of 85% phosphoric acid to obtain a precursor solution of α-zirconium phosphate, then add 90 ml of a solution with a concentration of 3 mg / ml graphene oxide, and then stir at 100 °C Reflux for 24 h, wash, and dry to obtain a nano-α-zirconium phosphate-supported graphene oxide flame retardant. The preparation of graphene oxide is the same as in Example 1.

Embodiment 3

[0030] 1 g zirconium oxychloride (ZrOCl 2 ·8H 2 O) Dissolved in 6 ml of deionized water, then slowly added 12 ml of 85% phosphoric acid to obtain a precursor solution of α-zirconium phosphate, then added 90 ml of a solution with a concentration of 3 mg / ml graphene oxide, and then heated at 90 ° C Stir and reflux for 30 h, wash, and dry to obtain a nano-α-zirconium phosphate-supported graphene oxide flame retardant. The preparation of graphene oxide is the same as in Example 1.

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Abstract

The invention belongs to the technical field of materials and in particular relates to a preparation method of a nano alpha-zirconium phosphate loaded graphene oxide flame retardant. The composition and the structure of the nano alpha-zirconium phosphate loaded graphene oxide flame retardant are characterized in that alpha-zirconium phosphate is loaded on the surface of a graphene oxide sheet layer in a nano particle form. The nano alpha-zirconium phosphate loaded graphene oxide flame retardant is prepared by the following method: mixing natural graphite, sodium nitrate, potassium permanganate and concentrated sulfuric acid; preparing graphene oxide through a Hummers oxidization and expansion method; adding a precursor solution of nano alpha-zirconium into a graphene oxide solution, and uniformly stirring; preparing the nano alpha-zirconium phosphate loaded graphene oxide flame retardant through a reflowing method. The alpha-zirconium phosphate and the graphene oxide have the synergistic effect, so that the thermal stability and the flame-retardant effect of the graphene oxide sheet layer in a high molecular material can be improved.

Description

technical field [0001] The invention belongs to the field of material preparation, and in particular relates to a method for preparing a nano-α-zirconium phosphate-loaded graphene oxide flame retardant. Background technique [0002] Graphene is a carbon-based nanomaterial with a two-dimensional planar layered structure composed of carbon atoms. It has a large specific surface area and excellent mechanical properties. Using the barrier properties of graphene sheets to gases can improve the performance of polymers. Therefore, the application of graphene in polymer flame retardant materials has very broad development prospects. However, according to literature reports [P. Liu, Y. Huang and X. Zhang, Superparamagnetic NiFe 2 o 4 particles on poly(3,4-ethylenedioxythiophene)- graphene: Synthesis, characterization and their excellent microwave absorption properties. Composites science and technology, 2014, 95, 107-113. ], in the process of polymer combustion, simple graphene due...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K9/12C08K3/32C08K3/04C01B32/194
CPCC01P2002/72C01P2004/04C08K3/04C08K3/32C08K9/12C08K2003/321C08K2201/011
Inventor 王正洲李晓艳蒋书剑
Owner TONGJI UNIV
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