Composite membrane and manufacturing method thereof

Abstract

The invention discloses a composite membrane. The composite membrane is characterized by being composed of an inorganic fiber mesh resin composite layer 10, an aluminum layer 20, a polyurethane adhesive layer 30 and a plastic composite layer 40. The invention further provides a manufacturing method of the composite membrane. The composite membrane has the advantages of low gas permeability and water permeability, and good alkali resistance, weather resistance, fire resistance and puncture resistance; the composite membrane and alkali cement mortar chemically react rarely, and the composite membrane can be widely applied in the fields, requiring heat insulation, of machinery, electronics, construction, aviation, aerospace, automobiles, ships in cold, hot or wet environment.

Description

technical field [0001] The invention relates to a composite membrane material and a preparation method thereof, in particular to a high-barrier fireproof composite membrane material and a preparation 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 has excellent properties su...

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.

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