Abstract
According to the climatic characteristics, the paper investigates relation between waterproof and air permeability of inorganic insulated decorative panel. The paper believes there are two main problems in the waterproof of inorganic insulated decorative panel, one is the gap is a weak link for waterproof as some weather proofing silicone sealants have poor elastic modulus, the other is the failure of construction details causes partial waterproofing failure. The composite panel system is best supplied in a complete set by the system supplier, which is a main comprehensive solution to the waterproofing problem of the composite panel. Through analyzing software simulation and experimental construction, the paper puts forward suggestion that hot summer and cold winter areas should take practical technical measures, including the use of the protective layer with high water vapor flux density or the installation of exhaust plugs in the outer wall base, or setting water vapor escaping channel such as PVC exhaust plug in the glue seam, in the actual project.
Highlights
Prefabricated in the factory, inorganic insulated decorative panels are composite plate products made of insulation materials, decorative panels, adhesives and connectors with excellent fireproof performance
There are two main problems in the waterproof of inorganic insulated decorative panel: 1) The gap is a weak link for waterproof as some weather proofing silicone sealants have poor elastic modulus, and the flexibility fails to meet the deformation of composite panel, causing cracking in case of large temperature difference between day and night, and large thermal expansion and cold contraction at the gap
The actual project is supplied by the system supplier in complete sets; the responsibility subject is clear; the construction follows the provisions of Technical Specification for Waterproofing of Exterior Wall of Building (JGJ/T2352011); waterproof quality problems can be avoided
Summary
Prefabricated in the factory, inorganic insulated decorative panels are composite plate products made of insulation materials, decorative panels, adhesives and connectors with excellent fireproof performance. Rock wool board and expanded perlite board are the main thermal insulation materials of the above composite panels. The Yangtze River Delta Area is hot and rainy, and has rain and heat over the same period. Waterproof and air permeability has a greater impact on the function of the composite panel and are closely related to energy efficiency, durability and feeling of comfort. Water resistance requires that composite panel materials can resist the intrusion of external liquid water; air permeability requires that indoor and outdoor water vapor migration should go normally
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