A kind of modified graphene flame retardant containing flame retardant element and double bond and preparation method thereof

Abstract

The invention relates to the technical field of flame retardants in polyurethane synthesis systems, and discloses a modified graphene flame retardant containing flame retardant elements and double bonds and a preparation method thereof. Firstly, graphite flakes and sodium chloride are ball-milled, and then Add p-aminostyrene and 6-pteridinamine, mix and ball mill, and finally add nitrite to mix and grind, then wash and vacuum dry the modified graphene flame retardant containing flame retardant elements and double bonds. The modified graphene flame retardant contains graphene, which is connected with 6-pteridinyl amine and p-aminostyrene through chemical groups, and the carbon-carbon double bond of this modified graphene flame retardant is introduced into the After polymerizing polyols and using the polymerized polyols to prepare polyurethane products, the polyurethane products have a better flame retardant effect.

Description

technical field [0001] The invention belongs to the technical field of flame retardants in polyurethane synthesis systems, and in particular relates to a modified graphene flame retardant containing flame retardant elements and double bonds and a preparation method thereof. Background technique [0002] Flame retardants are functional additives that endow flammable polymers with flame retardancy. Since most of the polymer materials currently used in transportation, construction, and electrical equipment are flammable, such as plastics, rubber, fibers, etc., their The safety factor of flame resistance is low, so the addition of flame retardants can increase the flame resistance of polymer materials and improve the safety factor. [0003] There are two types of flame retardants currently used in polyurethane synthesis systems: [0004] The first is the additive flame retardant containing phosphorus, chlorine, bromine and other flame retardant elements such as dimethyl methyl ...

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Problems solved by technology

[0004] The first is the additive flame retardant containing phosphorus, chlorine, bromine and other flame retardant elements such as dimethyl methyl phosphate. The advantages of this type of additive flame retardant are high content of flame retardant elements and low price, but there are Easy to migrate, and the mechanical properties of the material drop sharply when the amount of addition is large

[0005] The second is a compound containing flame retardant elements and active groups as a reactive flame retardant. However, although there are many compounds containing flame retardant elements, not all compounds containing flame retardant elements have active groups and participate in In the polyurethane synthesis system, if the compound containing the flame retardant element itself does not have active groups participating in the polyurethane synthesis system, after it is added to the polyurethane synthesis system, the compound is easy to migrate and cannot be added in large quantities, which will cause the compound to be in the polyurethane products. The flame retardant effect in the

Of course, it is also easy for people to think of introducing active groups into compounds that do not contain active groups participating in the polyurethane synthesis system through chemical synthesis, but most of the existing chemical synthesis methods have complex synthesis processes and the requirements for reaction conditions Higher, but also consider whether the introduced active groups will have adverse effects on the flame retardant properties of the original compound

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