Composite film having gas barrier, heat insulation and fire resistance properties, and making method thereof

Abstract

The invention provides a composite film having gas barrier, heat insulation and fire resistance properties. The composite film is characterized in that the composite film is sequentially formed by an inorganic fiber cloth layer 10, an aluminum-plastic composite layer 20 and a plastic composite layer 30 from outside to inside, and a binder is bonded between each two adjacent layers. The invention also provides a making method of the composite film having gas barrier, heat insulation and fire resistance properties. The barrier film has the characteristics of low gas and water transmittance, good alkali resistance, good weather resistance, good fire resistance, good puncture resistance, and no generation of a chemical reaction with an alkaline cement mortar, and can be widely used in the fields of machines, electronics, buildings, aviations, spaceflights, automobiles and ships needing heat insulation in the cold, hot and wet environments.

Description

technical field [0001] The invention relates to a composite membrane material and a manufacturing method thereof, in particular to a gas-blocking, heat-insulating and fireproof composite membrane material and a manufacturing method thereof. Background technique [0002] In recent years, there have been many fires caused by the burning of building exterior wall insulation materials in China, causing serious casualties and property losses. A series of problems are prompting people to change traditional concepts and develop and use advanced heat insulation and fireproof materials. [0003] The vacuum insulation panel is a high-efficiency insulation panel obtained by vacuum packaging with ultra-fine glass fiber as the core material and plastic composite film as the packaging bag. Based on the principle of vacuum insulation, the vacuum insulation panel realizes high-efficiency thermal insulation by maximizing the vacuum degree inside the panel and minimizing gas convection. It ha...

AI Technical Summary

Problems solved by technology

The outer surface of the packaging film of the commonly used vacuum insulation panels is aluminum foil, but both sides of the vacuum insulation panels for construction are mortar, and the pH value of common cement is about 11. Aluminosilicate, which leads to debonding from the cement mortar layer, resulting in gaps, and the increase in weight of the leveling mortar and facing layer bricks, causing the insulation system to fall off

Aluminum foil corrosion also increases the air leakage rate of the vacuum insulation panel, which accelerates the failure of the vacuum insulation panel

In addition, the current plastic packaging materials are flammable and do not have fire protection functions. Only from the fire protection requirements of building exterior wall insulation materials, they cannot meet the relevant national standards. With the improvement of human living environment, the requirements for energy conservation and environmental protection are increasing. The more stringent, the aerospace high-tech fields such as moon landing, Mars exploration, etc. have put forward fireproof requirements for thermal insulation films.

Images