Method for preparing flame retardant epoxy resin from modified graphene

A kind of epoxy resin, graphene technology, applied in the field of flame retardant epoxy resin prepared by modified graphene

Inactive Publication Date: 2018-10-12
盘锦职业技术学院
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  • Abstract
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Problems solved by technology

[0009] At present, there is a lot of research on graphene nanomaterials in various countries, and there are many achievements, but the compatibility with matrix materials needs to be improved, especially polymer matrix composites. Graphene is due to its unique two-dimensional sheet structure , is an ideal two-dimensional nanomaterial and an excellent choice for the dispersed phase in nanocomposites

Method used

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  • Method for preparing flame retardant epoxy resin from modified graphene
  • Method for preparing flame retardant epoxy resin from modified graphene
  • Method for preparing flame retardant epoxy resin from modified graphene

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Embodiment Construction

[0021] The present invention will be described in detail below in conjunction with examples.

[0022] Preparation of graphene oxide: Graphite has high chemical stability and weak reactivity. Using natural flake graphite as raw material, the modified Hummers method is used to prepare graphite oxide. By oxidizing graphite with strong acid, oxygen-containing groups are inserted between graphite layers to increase the distance between graphite layers, and graphite oxide suspension is obtained. Subsequently, the suspension was acid-washed and washed with water to remove residual strong acid, and after centrifugal dispersion and ultrasonic stripping, a graphene oxide suspension was obtained. Finally, freeze-dry to obtain graphene oxide.

[0023] Specific preparation example:

[0024] Weigh 7.5g of potassium peroxodisulfate and 7.5g of phosphorus pentoxide into a 250ml three-necked flask, add 40ml of concentrated sulfuric acid and stir evenly, weigh 10g of graphite powder and slowl...

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Abstract

The invention discloses a method for preparing flame retardant epoxy resin from modified graphene, and relates to a method for preparing epoxy resin. The method comprises preparation of graphene oxide; preparation of octa-aminopropyl cage-like silsesquioxane; and modifying of epoxy resin with functionalized graphene, to be more specific, heating and melting the epoxy resin, mixing and curing the epoxy resin and the functionalized graphene to obtain modified epoxy resin. According to the method, the graphene oxide (GO) is prepared by modifying, silane coupling agent KH-550 is used as a raw material for preparation of the octa-aminopropyl cage-like silsesquioxane (ApPOSS), the modified graphene is prepared by grafting reaction of the GO and the ApPOSS, the modified graphene and EP are mixedand cured to improve the compatibility of the modified graphene with the epoxy resin, the modified graphene and the epoxy resin are compounded for preparation of an epoxy resin nanocomposite, and thecomprehensive effect is obvious.

Description

technical field [0001] The invention relates to a method for preparing epoxy resin, in particular to a method for flame-retardant epoxy resin prepared from modified graphene. Background technique [0002] At present, the development of flame-retardant epoxy resins must not only meet various performance requirements, but also respond to the increasing environmental protection demands from around the world. Under such conditions, the development of a new generation of epoxy resin composite products is of great importance. Theoretical and practical significance. [0003] At present, the more promising flame-retardant epoxy resins include silicon-containing flame-retardant epoxy resins, epoxy resins modified with intrinsic flame-retardant polymers, nitrogen-containing flame-retardant epoxy resins, and phosphorus-containing flame-retardant epoxy resins. CSW et al. tested the flame retardant properties of silicon-containing epoxy resin composites through experimental systems. The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08K9/06C08K3/04C08G77/26
CPCC08G77/045C08K3/042C08K9/06C08K9/08C08L2201/02C08L63/00
Inventor 左丹刘洪宇徐晓强
Owner 盘锦职业技术学院
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