Flame-retardant smoke-suppression polymer composite material and preparation method thereof

Abstract

The invention discloses a flame-retardant smoke-suppression polymer composite material and a preparation method thereof. The method comprises the following steps: S1, preparing raw materials according to the following mass percent: 10-15% of three-dimensional carbon felt, 5-10% of zinc stannate and 75-85% of matrix resin; s2, loading zinc stannate on the three-dimensional carbon felt to prepare a three-dimensional zinc stannate loaded carbon felt preform; and S3, carrying out vacuum infusion or in-situ polymerization on matrix resin on the three-dimensional zinc stannate-loaded carbon felt preform to prepare the flame-retardant and smoke-suppression polymer composite material with the zinc stannate loaded on the three-dimensional carbon felt. The structural characteristic that fibers in a three-dimensional carbon felt preform are mutually lapped to form a carbon felt is utilized, zinc stannate is introduced through dip coating evaporation self-assembly, a three-dimensional flame-retardant and smoke-suppression network framework is constructed, and the composite material is prepared through in-situ vacuum infusion or in-situ polymerization of matrix resin. The composite material prepared by the invention has excellent flame retardance, smoke suppression and mechanical properties, and can be widely applied to the field of flame retardance.

Description

technical field [0001] The invention belongs to the technical field of polymer flame-retardant materials, in particular to a flame-retardant and smoke-suppressing polymer composite material and a preparation method thereof. Background technique [0002] Polymer materials are long-chain molecules composed of repeating units, and together with steel, wood and cement, are considered to be new materials that promote social development. Polymer materials have the characteristics of ease of processing, flexibility, fatigue resistance, light weight, low production cost, high dielectric constant and mechanical strength, etc., and are widely used in aerospace, electronics, biomedicine and automotive industries. The polymer material is flammable and has a fire hazard. Flame retardants can impart self-extinguishing, flame retardant and smoke suppression properties to synthetic materials, so they have become one of the important auxiliaries for the development and application of polyme...

AI Technical Summary

Problems solved by technology

However, due to the poor dispersion performance (difficult to disperse uniformly) of inorganic flame retardants zinc hydroxystannate (ZHS) and zinc stannate (ZS) in polymer composite materials, their flame retardant performance has been greatly limited. Difficult to be fully released

At the same time, due to the poor interfacial compatibility between zinc hydroxystannate (ZHS) and zinc stannate (ZS) and organic polymer materials, there are problems of difficult dispersion and uneven dispersion in polymer materials, and these two problems Both will affect the performance of the polymer material itself, such as the mechanical properties, tensile strength and toughness of the polymer material will be significantly reduced

[0004] In addition, the existing flame-retardant and smoke-suppressing polymer composite materials still have disadvantages such as complex preparation process, large amount of flame-retardant and smoke-suppressing agent, low flame-retardant and smoke-suppressing efficiency, and significantly worse mechanical properties and decorative effects of the material.

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