Method for preparing nylon 6/graphite oxide nanocomposite

A nano-composite material and composite material technology, applied in the field of preparation of nylon 6/graphite oxide nano-composite materials, can solve the problems of not preparing nylon 6 conductive and flame-resistant nano-composites, and achieve excellent mechanical properties and good secondary processability , the flame retardant effect is remarkable

Active Publication Date: 2010-06-30
SHANGHAI GENIUS ADVANCED MATERIAL (GRP) CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the prior art, there is no method for preparing nylon 6 conductive flame-resist

Method used

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  • Method for preparing nylon 6/graphite oxide nanocomposite
  • Method for preparing nylon 6/graphite oxide nanocomposite
  • Method for preparing nylon 6/graphite oxide nanocomposite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Add 5 g of graphite oxide to 250 g of distilled water, place in a water bath at 80° C., stir, and sonicate for 1 hour to disperse evenly. Then 1000 g of caprolactam was added and ultrasonicated for 2 hours. Remove most of the water by vacuum distillation at 90°C, add to the reactor and heat up to 250°C to keep the pressure at 1.2MPa, react for 4 hours, then react at normal pressure for 1 hour, keep vacuum for 1 hour, and discharge. The properties of the prepared nylon 6 / graphite oxide nanocomposite are shown in attached table 2.

Embodiment 2

[0022] Basically the same as embodiment 1, only changing the graphite oxide content is 20g, and distilled water is 1000g. The properties of the prepared nylon 6 / graphite oxide nanocomposite are shown in attached table 2.

Embodiment 3

[0024] Basically the same as embodiment 1, only changing the graphite oxide content is 50g, and distilled water is 2500g. The properties of the prepared nylon 6 / graphite oxide nanocomposite are shown in attached table 2.

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Abstract

The invention relates to a method for preparing a nylon 6/graphite oxide nanocomposite. In the method, caprolactam is adopted for in situ hydrolysis and ring-opening polymerization to prepare the nylon 6/graphite oxide nanocomposite, so that caprolactam monomers are easy to perform in-situ intercalative polymerization to dissociate a graphite oxide lamella, and the dispersing uniformity of the graphite oxide lamella in a polymer substrate is improved; and the composite prepared has better conductivity and high-efficiency flame retardancy. The nylon 6 substrate is converted from an insulator to a semiconductor and the flame retardant rating can reach V-0 rating of a UL94 standard, and the integral good mechanical property of the material per se is maintained simultaneously. The method has the advantage of simple and effective process; the conductivity and flame retardancy of the obtained composite are obviously improved; the material has good secondary-working character; an additive graphite oxide does not pollute the environment; and the nylon 6/graphite oxide nanocomposite has wide application range.

Description

technical field [0001] The invention relates to a new method for preparing graphite oxide / nylon 6 conductive flame-resistant nanocomposites by hydrolysis ring-opening polymerization, in particular to a halogen-free flame-retardant conductive nylon 6 suitable for secondary processing and molding with environmental protection requirements Preparation methods of nanocomposites. Background technique [0002] Graphite has a silicate-like layered structure, and it is difficult to provide a reaction space for organic monomers due to the small interlayer distance. Graphite oxide obtained after graphite oxidation by the Hummers method contains C-OH, -COOH, epoxy groups and other groups, thus showing strong polarity, and it is easy to absorb polar molecules and polar polymers to form oxidation Graphite intercalation nanocomposites and exfoliated nanocomposites. Compared with conventional composite materials, some properties of nanocomposites are greatly improved and endowed with som...

Claims

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Application Information

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IPC IPC(8): C08L77/02C08K9/00C08G69/16C08G69/24
Inventor 刘燕杨桂生
Owner SHANGHAI GENIUS ADVANCED MATERIAL (GRP) CO LTD
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