By analyzing various types of insulating glass spacer bars, we can find that stainless steel spacer bars are by far the best choice. There are many advantages to stainless steel spacer bars and they meet the current requirements of insulating glass for spacer bars. The following is a simple analysis of insulating glass spacer bars.

　　The peripheral protective structure in buildings is divided into two parts: transparent and opaque. The transparent part is mainly made of glass, which serves as lighting, landscape, and ventilation. The application of glass makes it easier for our buildings to reflect the designer's personality and different architectural styles; The use of brick, stone, reinforced concrete, and other composite materials in the opaque peripheral protective structure is necessary for the structural design of buildings. Architectural designers bring rich and colorful life to our architecture by applying these two different elements. In contrast, people's demand for building energy efficiency in buildings has only a history of 10-20 years. Although the energy efficiency of glass buildings is not as good as that of opaque outer enclosures, the latter can greatly improve the energy-saving effect brought by insulation and insulation through appropriate internal/external insulation treatment, and even achieve zero energy consumption of the entire building. But people did not completely replace the transparent part of the glass with the opaque part of the outer enclosure due to this.

    　The energy-saving effect of insulating glass is much better than that of single-layer glass. Among the three factors that affect the insulation effect of insulating glass, thermal radiation, thermal convection, and thermal conduction, thermal radiation is the largest. Therefore, to improve the energy-saving effect of insulating glass, it is necessary to first focus on the main contradiction. If these three aspects cannot be carried out simultaneously, then low radiation glass must be used first, and then inert gas filling and warm edge spacing strips must be considered. In addition, when we use materials with different configurations of insulating glass, it is necessary to improve the overall effect of the replacement, and there should be no conflict or mutual cancellation between the substitute materials. Thirdly, when selecting insulating glass materials, consideration should be given to matching the service life of insulating glass with that of windows. Fourthly, it is also necessary to meet the product's good cost-effectiveness, wide application range, and easy promotion.

What we mean by improvement is that the overall performance is improved on the basis of ensuring the basic performance of existing insulating glass. Rather than losing other necessary functions to achieve a certain level of performance. At present, the main applications of warm edges include extruded PVC spacer strips, silicone (or EPDM) spacer strips, stainless steel spacer strips (0.09, 0.13-0.15mm wall thickness), plastic steel composite spacer strips, U-shaped steel spacer strips, composite adhesive strips, and heat break spacer strips. Among them, some aluminum spacers with warm edges can reduce condensation at the edges of insulating glass compared to cold edges, but at the cost of reducing the sealing life of insulating glass; Some warm edges have lower thermal conductivity than other warm edges due to their lack of metal, but their application range has significant limitations, not only poor cost-effectiveness, but also incompatibility with some sealants. In addition, there is currently no convincing data to prove that some applications of warm edges cannot lead to the infiltration of inert gases and the oxidation of low radiation soft coatings.

　　The above thinking tells us that although many warm edges in the market can improve the overall performance of insulating glass to some extent, not all warm edges have improved the overall performance of insulating glass. We believe that the attitude towards choosing warm edge spacers should be gradual rather than jumping, and adopt a completely negative attitude towards existing ones. From this perspective, when examining the above spacer bars, we find that stainless steel spacer bars are by far the best choice, mainly because, although stainless steel metal has a higher thermal conductivity than non-metallic materials, it has a much lower thermal conductivity than aluminum metal, and its linear thermal expansion coefficient is not only lower than aluminum metal, but also much lower than other non-metallic materials, whether in terms of thermal conductivity or linear thermal expansion coefficient, They are all closest to glass.