标准摘要
[中文适用范围]： 本部分ISO 20492建立了两种测试方法，用于测试预组装、永久密封的隔热玻璃单元或有意留开毛细管的隔热玻璃单元的防起雾性能。这两种方法分别被指定为方法1（适用于北美等市场）和方法2（适用于欧洲等市场）。本部分ISO 20492不适用于含有彩釉玻璃涂层的密封隔热玻璃单元，因为存在测试限制。本部分ISO 20492也不适用于仅用于装饰功能的隔热玻璃（IG）单元。 [外文原描述]： ISO 20492:2008 establishes two methods for testing the resistance to fogging of pre-assembled, permanently sealed insulating glass units or insulating glass units with capillary tubes intentionally left open. The two methods are designated as approach 1 for markets such as North America, and approach 2 for markets such as Europe. ISO 20492:2008 is not applicable to sealed, insulating glass units containing a spandrel glass coating due to testing limitations. ISO 20492:2008 does not apply to insulating glass (IG) units whose function is decorative only.
英文名称Glass in buildings - Insulating glass — Part 2: Chemical fogging tests