1, the main factors affecting the service life of hollow glass sealing long-term

　　(1) the design of the hollow glass, including choosing what crosser and structure: single seal or double seal;

　　(2) and amount of sealant;

　　(3) the choice of the desiccant;

　　(4) the interval of the choice: or for four consecutive plug type;

　　(5) glass cleaning;

　　(6) technology and processing quality of the workers.

　　Article 2, interval of choice

　　Article interval are considered in the choice of two factors: (1) the heat conduction coefficient, (2) the influence of hollow window seal life. Starting from the thermal conductivity, hollow glass using interval article can be divided into two types: warm and cold side. Cold side refers to the traditional metal aluminum frame, warm edge refers to the interval of the material or article structure different from traditional aluminum every interval, such as domestic use strip (by undulating aluminum with plus a layer containing desiccant sealant). Present article using the interval of the mostly aluminum, belongs to the cold side, easy to cause the edge ChuJie dew or frost on, reduce the energy saving effect of the whole window. Warm edge article interval as the name implies is a kind of article is intended to improve thermal conductivity of insulating glass edge intervals, by using a small amount of metal or nonmetal material completely, or change the structure of the traditional aluminum bar to achieve energy saving effect of the window. In North America, warm edge article mainly between super (SUPERSPACER), comfortable strip (SWIGGLE), stainless steel U every article (INTERCEPT), reinforced plastic and aluminum composite tank type, fiber glass partition, and with cold bridge metal crosser and so on. As people awareness of energy conservation, warm edge article every foreseeable hollow glass market share will gradually rise in our country. According to the report, in the cold side of traditional metal article across the north American market share has dropped from 85% in 1990 to 20% in 1997, and at the same time, a warm edge class intervals has risen from 15% in 1990 to 80% in 1997.

　　From the point of view of the sealing life of hollow glass, warm and cold while the seal life of points and the window is no necessary link between. That is to say, is a cold article aluminum interval may be warmer while the life of every article, and some warm edge article across the seal life may also be the life of the cooler edge crosser. Article interval are key to itself and other materials of hollow glass configuration.

　　Article 3, aluminum spacing

　　Aluminum interval article mainly include two categories: the traditional four plug type and the improved continuous long tube corner type. The corners of the plug type on the concrete practice is divided into glue joint processing and not two kinds of coating processing. In general, the less the aluminum frame joint sealing performance, the better, only a continuous long tube corner joint type aluminum frame the plug in the four corners to improve a lot. However, if the four corners plugging type aluminum frame in glue joint, and continuous long tube corner type is not glue, the less joint sealing performance is not necessarily better than joint more.

　　In view of the present use of aluminum frame interval (especially in small and medium-sized enterprises (smes) mostly four plug type, and continuous long tube corner type aluminum frame of manufacturing costs and higher, the author thinks that, to improve the performance of hollow window seal is a practical method is adopted in the four corners of glue joint method.

　　Article 4, warm edge interval

　　Some warm edge spacing bar contains solvent, the temperature rise will break volatilization, hanging in the air layer of insulating glass. If used inside the hollow glass desiccant can't make this volatile organic solvent vapor adsorption, and as the temperature falls, the solvent vapor will condense on the inside of the glass, the formation of chemical fog, lead to a permanent change glass flowers.

　　In order to improve the energy-saving performance of hollow window, some manufacturers will low-e glass with warm edge article every use, but low-e glass plating Mo particularly sensitive to chemical fog, once formed, than common white glass looks more obvious. In choosing a warm edge crosser, therefore, necessary to consider the problem of chemical fog.

　　5, the structure of the hollow glass: single seal and double seal

　　There are two aspects to the main purpose of the hollow glass glue. (1) the sealing function, that is, prevent water vapor into the hollow glass in the air layer of the outside world; (2) the structure effect, the changes in the outside temperature and high humidity and under uv light can still keep the structural integrity of hollow glass. It is clear that the role of insulating glass sealant for insulating glass to play two glue, a structure of a seal, doing things. If only played in a hollow glass glue, that is, single seal, is it a glue to two role at the same time. But in practice, a choice of at the same time has good sealing structure and the performance of the adhesive is impossible.

　　Unlike other test standards, P1 hollow glass seal life accelerated aging test was not through and through. In addition to the test conditions of high humidity and atmospheric circulation, P1 test products have strong exposure to the sun's ultraviolet rays, until the test sealing system failure. The fact that the single channel sealing system of life shorter than the dual sealing system.