The invention belongs to the technical field of fire retardants and mainly relates to a
graphene grafted
nitrogen,
phosphorus and
silicon synergistic
halogen-free
flame retardant and a preparation method thereof. The preparation method comprises the following steps: compounding 3-aminopropyl-
triethoxysilane into octa-aminopropyl caged
silsesquioxane through a hydrolytic condensation polymerizationprocess; preparing
graphene oxide after chemically oxidizing and peeling
graphene through an improved hummers process; compounding 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-
oxide and graphene
oxide into a grafted product 1 with an reactivity functional group through an
in situ polymerization process;
grafting the octa-aminopropyl caged
silsesquioxane and the grafted product 1 into the graphenegrafted
nitrogen,
phosphorus and
silicon synergistic
halogen-free
flame retardant through the
in situ polymerization process. The preparation method for the graphene grafted
nitrogen,
phosphorus andsilicon synergistic
halogen-free
flame retardant provided by the invention has the advantages of simple preparation process, safety, environmental friendliness, and the like; the graphene grafted nitrogen, phosphorus and
silicon synergistic halogen-free flame retardant can be widely used for inflaming retarding in the fields of
electronics, automobiles, cables, packaging,
aviation, and the like; the graphene grafted nitrogen, phosphorus and silicon synergistic halogen-free flame retardant has a bright application prospect.