Flexible heat preservation and heat insulation film and preparation method thereof

Abstract

The invention discloses a flexible heat preservation and heat insulation film. The flexible heat preservation and heat insulation film is characterized in that a PE protective film, a PET plastic thin film and an aerogel coating are included; the outer surface of the PE protective film is provided with an aluminum film reflecting layer; the PET plastic thin film is arranged between the PE protective film and the aerogel coating. According to the flexible heat preservation and heat insulation film, the aerogel coating serves as a main function achieving layer for heat preservation and heat insulation, a nano porous structure can effectively inhibit gas heat conduction and solid heat conduction, and therefore the heat insulation performance is efficient; the aluminum reflecting layer can overcome the defect that aerogel cannot inhibit radiation heat conduction, so that the material achieves heat preservation and heat insulation comprehensively; the thickness of the flexible heat preservation and heat insulation film is only a few millimeters, and therefore the flexible heat preservation and heat insulation film can adapt to multiple complex geometrical shapes and mechanical and thermal property requirements; interlayer bonding is firm, and the service life is long.

Description

technical field [0001] The invention belongs to the technical field of thermal insulation materials, and in particular relates to a flexible thermal insulation film and a preparation method thereof. Background technique [0002] Flexible composites generally consist of fiber-reinforced materials and a tough polymer matrix. Compared with commonly used thermoset or thermoplastic polymer matrix composites, flexible composites have a larger deformation range, higher load-carrying capacity and good fatigue properties. Another obvious feature of this material is that the material exhibits low stiffness under low stress, but has relatively high strength and stiffness when subjected to high stress. [0003] With the development of thermal insulation materials, researchers have proposed the concept of advanced thermal insulation materials and ultra-extreme thermal insulation materials, which are characterized by higher thermal resistance compared with traditional aluminum silicate fi...

AI Technical Summary

Problems solved by technology

The airgel protective plate has low density, small thermal conductivity, excellent thermal insulation performance, and has the effect of shock absorption and energy absorption, but the protective plate with this structure can solve the problem of airgel powder dropping. The ability of protection and heat preservation will gradually deteriorate

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