Reaction type polysiloxane flame-retardant coating and preparation method thereof

Abstract

The invention discloses a reaction type polysiloxane flame-retardant coating and a preparation method thereof, and belongs to the technical field of flame-retardant coatings. The reaction type polysiloxane flame-retardant coating consists of a silane coupling agent, ammonium polyphosphate, a film-forming agent, a polysiloxane flame retardant, a wetting agent and ethanol. The film-forming agent and the silane coupling agent of the reaction type polysiloxane flame-retardant coating have the function of film forming simultaneously, the silane coupling agent and the synthesized polysiloxane flame retardant can be also acted with each other, and the silane coupling agent and the flame retardant can implement microencapsulation on the ammonium polyphosphate, and can be also reacted, so that the reaction type polysiloxane flame-retardant coating of a spatial cross-linked net structure can be prepared, the coating adopts ethanol as a solvent, and the raw materials of the whole system are environmental-friendly reagents which can do no harm to the environment and operators; the coating is a reaction type coating, is high in flame retardancy efficiency, and can be deformed together with a substrate without dropping, the limit oxygen index LOI of polypropylene can be up to 31.3% and can be qualified in UL-94 V0 tests, and the mechanical property of the substrate can be barely affected.

Description

technical field

[0001] The invention relates to a reactive polysiloxane flame retardant coating and a preparation method thereof, belonging to the technical field of flame retardant coatings. Background technique

[0002] In modern life, fires caused by improper fire control occur frequently, which lead to huge loss of life and property. However, a large number of commonly used materials are flammable, so it is imperative to endow these materials with flame retardancy to reduce the probability of fire occurrence.

[0003] Usually, in terms of flame retardant treatment methods, there are flame retardants blended with the matrix, preparation of intrinsic flame retardant polymers, and application of high polymer flame retardant coatings. Intrinsic polymers are difficult to prepare, their types are small, and their applications are limited. The additive type requires a large amount of addition to have a flame retardant effect, and this will bring the following problems: first,...

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