Requirements on secondary insulating glass sealants by Lange
نویسنده
چکیده
Nowadays there are various kinds of insulating glass available on the global market. The most popular type is the double sealed insulating glass unit (IGU). Polysulfide, polyurethane and silicone based sealants are the premium elastic sealants used as secondary seal. Provided they are formulated to the state-of-art these sealants meet all requirements on manufacture and service properties of well performing insulating glass units. In this paper processing and sealant properties of the leading secondary sealants are discussed by using test results of secondary insulating glass sealants commercially available on the European market. It could be shown that chemically based differences of the processing and service properties between the leading secondary sealants are the decisive factors for the selection of the secondary sealant type for a particular application of the insulating glass unit. Individual internal manufacturing standards established by the IGU producers which consider the specific properties of the different secondary sealants mainly curing behavior, moisture and gas permeation guarantee the manufacture of high quality insulating glass.
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