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Casting nylon/graphene nanocomposite material and preparation method thereof

A technology of nanocomposite materials and cast nylon, which is applied in the field of polymers to achieve related performance improvements and simple steps

Inactive Publication Date: 2016-06-01
HEFEI GENIUS NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In fact, when graphene is oxidized or otherwise modified, its physical properties will change significantly, and the mechanical and thermal properties of modified graphene are far from those of pure graphene. The modification of polymers with pure graphene is definitely not as good as the modification of polymers with pure graphene

Method used

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  • Casting nylon/graphene nanocomposite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Put 500g of caprolactam in a 1000ml three-necked flask, heat it to about 80°C, and make it completely melted, then add 5mg of graphene powder, and disperse in an ultrasonic pulverizer for 20 minutes (power is 20%), Graphene is completely dispersed in the molten caprolactam monomer to form a mixed melt;

[0030] (2) Heat the mixed melt to 150°C, vacuumize and remove water for 30 minutes, then add 5g of sodium hydroxide and 2.5ml of 2,4-toluene diisocyanate (TDI), mix well, and open the solution by in-situ anion The ring polymerization process is used for casting, and the mold temperature is controlled at 160°C. After reacting for 15 minutes, it is cooled to obtain a cast nylon / pure graphene nanocomposite material.

[0031] The electron microscope scanning image of the prepared cast nylon / pure graphene nanocomposite is as follows: figure 1 As shown, it can be seen from the figure that the dispersion of graphene in the matrix caprolactam is uniform and the dispersion ...

Embodiment 2

[0034] The preparation process and raw materials are the same as in Example 1, except that the addition of graphene powder is changed to 50 mg.

Embodiment 3

[0036] The preparation process and raw materials are the same as in Example 1, except that the addition of graphene powder is changed to 500 mg.

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Abstract

The invention relates to a casting nylon / graphene nanocomposite material and a preparation method thereof. The preparation method comprises pre-dispersing graphene in a molten polyamide monomer, adding a catalyst, an activator and other auxiliary agents into the pre-dispersed graphene / polyamide monomer mixed melt and casting the nylon / graphene nanocomposite material through an in-situ anionic ring-opening polymerization technology. The graphene is pre-dispersed in the molten polyamide monomer through an ultrasonic pulverizer so that the pure graphene is well dispersed in a polymer matrix and thus graphene excellent performances are retained and the strength, modulus and thermal properties of the modified polyamide composite material are substantially improved.

Description

technical field [0001] The method of the invention relates to the technical field of polymers, in particular to a high-performance casting nylon / graphene nanocomposite material and a preparation method thereof. Background technique [0002] Nanocomposites are based on resin, rubber, ceramics and metal as the continuous phase, and nano-sized metals, semiconductors, rigid particles and other inorganic particles, fibers, carbon nanotubes and other modifiers as the dispersed phase. The method is to uniformly disperse the modifier in the matrix material to form a composite system containing nano-sized materials. This system material is called a nanocomposite material. Its designability is widely used in aerospace, defense, transportation, sports and other fields. [0003] Graphene is a planar film composed of carbon atoms in a hexagonal honeycomb lattice with sp2 hybrid orbitals. It is a two-dimensional material with a thickness of only one carbon atom. Because of its extraord...

Claims

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Application Information

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IPC IPC(8): C08G69/18C08L77/02C08K3/04
Inventor 付绪兵杨桂生
Owner HEFEI GENIUS NEW MATERIALS
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