Graphene-doped flame-retardant material and preparation method thereof

Abstract

The invention discloses a graphene-doped flame-retardant material and a preparation method thereof. The graphene-doped flame-retardant material comprises the following raw materials in parts by weight: 40-60 parts of polyether polyol, 100-130 parts of isocyanate, 30-50 parts of a flame retardant, 0.2-1 part of a catalyst, 5-10 parts of a chain extender, 2-8 parts of graphene filler, 1-5 parts of a stabilizer and 2-5 parts of deionized water. The preparation method comprises the following steps: S1, drying polyether polyol and isocyanate; S2, uniformly mixing and dispersing polyether polyol, a flame retardant, a catalyst, a chain extender, a graphene filler, a stabilizer and deionized water to obtain a mixture; S3, enabling isocyanate and the mixture to be subjected to a reaction, and preparing a graphene-doped flame retardant material. The flame-retardant material prepared by the invention is excellent in flame-retardant property, relatively good in mechanical property, relatively low in heat conductivity coefficient, relatively high in practical value and worthy of popularization.

Description

technical field [0001] The invention belongs to the technical field of flame retardant materials, and in particular relates to a graphene-doped flame retardant material and a preparation method thereof. Background technique [0002] Flame retardants are functional additives that enhance the flame retardancy of flammable polymers. They can be divided into additive flame retardants and reactive flame retardants. Additive flame retardants are added to materials by mechanical mixing. Inorganic flame retardants such as antimony trioxide, aluminum hydroxide, graphene and other flame retardants, organic flame retardants such as halogen flame retardants, phosphorus nitrogen flame retardants, etc., reactive flame retardants are used as a single The body participates in the polymerization reaction and enters the organic polymer material, so that the polymer material itself contains flame retardant components, which has less impact on the performance of the polymer material, and has th...

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Problems solved by technology

[0004] Polyurethane is a porous polymer compound with sound insulation, shockproof, anti-virus, corrosion resistance and other properties. It is divided into two categories: polyester polyurethane and polyether polyurethane. It is mainly used in polyurethane plastics, polyurethane fibers, polyurethane elastomers, polyurethane Coatings and other products have stable chemical properties, good mechanical properties, and excellent resilience. They can be used as packaging materials, sound insulation materials, filter materials, etc., and also play an important role in construction, aviation industry, and thermal insulation structural materials. It is widely used in the field of household, daily necessities, construction and transportation, etc., but the flame retardancy of polyurethane is poor, and the char formation rate in the combustion process is low, it is difficult to inhibit the combustion process of materials, which limits the use of polyurethane materials. The scope of use, while the traditional flame-retardant polyurethane is to add an additive flame retardant to endow the polyurethane material with flame-retardant properties, but the additive flame retardant will affect the mechanical properties and performance of the polyurethane material

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