Composite heat insulating material, and preparation method and application of composite heat insulating material

Abstract

The invention discloses a composite heat insulating material which comprises an aluminum-plastic composite film, a polymer foaming layer and a bubble pad that are composited sequentially, wherein thealuminum-plastic composite film comprises a matrix film and nylon mesh lines composited on the matrix film; the matrix film comprises a PVF (polyvinyl fluoride) film and a single-side aluminized VMPETfilm; the PVF film is composited on a PET side of the VMPET film; the nylon mesh lines are composited on an aluminized side of the VMPET film; the polymer foaming layer is composited on the nylon mesh lines; the polymer foaming layer comprises foam plastic prepared from a polymer material and nanomaterial antimony according to a mass ratio of (0.08-0.3):1; and the bubble pad is composited on thepolymer foaming layer. The invention further provides a preparation method and an application of the composite heat insulating material. The composite heat insulating material has performance such aslight reflection, heat reflection and radiation protection, good sealability and a strong barrier property.

Description

technical field [0001] The invention relates to the technical field of thermal insulation materials, in particular to a composite thermal insulation material, its preparation method and application. Background technique [0002] With the increasing energy crisis, people's demand for thermal insulation materials is gradually increasing. At present, the thermal insulation materials produced industrially are mainly organic thermal insulation materials and inorganic thermal insulation materials. Organic thermal insulation materials are mainly various polymer foam materials, such as rubber foam, polyethylene foam, polystyrene foam, etc. The advantages of this type of thermal insulation material are mature technology, large-scale production, low thermal conductivity, and good thermal insulation effect. However, they have low operating temperature (<100°C), are easy to burn, and have low fire ratings. Inorganic thermal insulation materials can be divided into hard thermal insu...

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Problems solved by technology

Organic thermal insulation materials are mainly various polymer foam materials, such as rubber foam, polyethylene foam, polystyrene foam, etc. The advantages of this type of thermal insulation material are mature technology, large-scale production, low thermal conductivity, and good thermal insulation effect. But they use low temperature (<100°C), are easy to burn, and have low fire rating

Inorganic thermal insulation materials can be divided into hard thermal insulation materials and soft thermal insulation materials. Among them, hard thermal insulation materials such as calcium silicate, foam glass, etc., are easy to break, have large construction losses, and must be preformed, requiring a lot of molds. Therefore, the cost is high, and the use is not very common. The soft thermal insulation materials are mainly felts made of various inorganic fiber materials, and they also have defects. For example, the felts made of artificial inorganic fibers have a single composition and only use inorganic Fiber, the gap between fibers is large, the structure is loose, high-temperature hot air can easily penetrate the insulation layer, forming a large range of convection conduction, the thermal conductivity is large, and the insulation effect is poor. For felts made of natural inorganic fibers, they have no All exceptions can only use natural asbestos fiber as the main material, and asbestos is suspected of being a carcinogen, and is banned or restricted in more and more countries

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