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Graphene-molybdenum oxide nano flame-retardant composite material

A composite material and nano-flame retardant technology, which is applied in the field of polymer flame retardant, can solve problems such as difficulty in ensuring the effect of flame retardant modification, and achieve the effects of easy scale-up production, wide application prospects, and easy addition

Active Publication Date: 2015-12-16
NANJING HONGRUI PLASTIC PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the degree of dispersion of pure graphene in the polymer matrix is ​​difficult to ensure its flame retardant modification effect.
On the other hand, when the polymer burns, it produces a large amount of black smoke with toxic gases

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A kind of preparation of graphene-molybdenum oxide nano flame retardant composite material, comprises the following steps:

[0026] (1) 2 g of graphene oxide prepared by the Hummers method (see HummersWS, OffemanRE.Preparationofgraphiteoxide.JAmChemSoc, 1958, 80:1339 for the preparation method) was lyophilized into powder, and mixed with 16g of ammonium dimolybdate using a high-speed mixer Uniform;

[0027] (2) Utilize ball mill ball milling above-mentioned mixture to be graphene oxide-ammonium molybdate compound, the rotating speed of ball mill is 100rpm;

[0028] (3) Place the above compound in a tube furnace, heat up to 800°C at a heating rate of 10°C / min, keep it warm for 1min under nitrogen protection, and then lower it to room temperature to obtain a graphene-molybdenum oxide nanocomposite;

[0029] (4) Put the graphene-molybdenum oxide nanocomposite prepared in step (3) and general-purpose polystyrene resin (PG383, Taiwan Chi Mei Company) into the torque rheomet...

Embodiment 2

[0037]A kind of preparation method of graphene-molybdenum oxide nano flame retardant composite material, its difference with embodiment 1 is that the quality of graphene oxide powder becomes 4g by 2g, and 16g ammonium dimolybdate becomes 16g ammonium heptamolybdate , the speed of the ball mill changed from 100rpm to 120rpm, the heating rate changed from 10°C / min to 8°C / min, the heating temperature changed from 800°C to 500°C, and the holding time changed from 1min to 10min, the graphene-molybdenum oxide nanocomposite The number of parts by mass changed from 5 parts to 3 parts, and the number of parts by mass of the resin changed from 95 parts to 97 parts.

Embodiment 3

[0039] A kind of preparation method of graphene-molybdenum oxide nano flame retardant composite material, its difference with embodiment 1 is that the quality of graphene oxide powder becomes 10g by 2g, and 16g ammonium dimolybdate becomes 10g ammonium tetramolybdate , the speed of the ball mill was changed from 100rpm to 150rpm, the heating rate was changed from 10°C / min to 5°C / min, the heating temperature was changed from 800°C to 400°C, and the holding time was changed from 1min to 30min, the graphene-molybdenum oxide nanocomposite The number of parts by mass is changed from 5 parts to 8 parts, and the number of parts by mass of resin is changed from 95 parts to 92 parts.

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Abstract

The invention relates to a graphene-molybdenum oxide nano flame-retardant composite material. The preparation method comprises the following steps: (1) mixing graphene oxide and ammonium molybdate in a mass ratio of (1.8-8):1; (2) carrying out ball milling on the mixture obtained in the step (1) to obtain a graphene oxide-ammonium molybdate composite; (3) heating the composite obtained in the step (2) to 100-1050 DEG C, keeping the temperature in a nitrogen protective atmosphere, and cooling to obtain a graphene-molybdenum oxide nano composite; (4) putting the graphene-molybdenum oxide nano composite obtained in the step (3) and a polystyrene resin into a torsion rheometer, and banburying, wherein the mass percent of the graphene-molybdenum oxide nano composite is 0.5-10%, and the mass percent of the polystyrene resin is 90-99.5%; and (5) carrying out extrusion granulation on the material obtained in the step (4) to obtain the graphene-molybdenum oxide nano flame-retardant composite material. The graphene in the composite material has favorable barrier actions; and the molybdenum oxide has the synergistic actions of flame retardancy and smoke inhibition, and can obtain favorable flame retardancy and mechanical properties when being slightly added.

Description

technical field [0001] The application belongs to the technical field of polymer flame retardant, and specifically relates to a halogen-free flame retardant polymer nanocomposite material, especially a graphene-molybdenum oxide nanocomposite flame retardant material. Background technique [0002] With the development of the polymer material industry and the continuous expansion of application fields, flame-retardant polymer materials have shown broad market prospects in many fields such as building materials, automobiles, electronic appliances, aerospace, daily furniture, and interior decoration. The most commonly used halogen-based flame retardants in flame retardants will produce a large amount of toxic and corrosive smoke when burned, which will pollute and corrode the environment and molds. In recent years, research on the development and application of halogen-free flame retardants has become a research hotspot in the global flame retardant industry. [0003] Graphene ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L25/06C08K3/04C08K3/22
Inventor 韩永芹崔洪芝李廷希高萧萧王天琪展晓元张强
Owner NANJING HONGRUI PLASTIC PROD
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