Do you know what hollow glass is, and how does it differ from ordinary glass?

2022-09-08

　　What is hollow glass?
　　Double-glazed glass is made by using two or three panes of glass, combined with a composite adhesive, to create soundproofing glass with an aluminum alloy frame containing a desiccant. Compared to double-pane glass, double-glazed glass offers superior performance. It consists of two glass panes evenly spaced apart and securely sealed around the edges, allowing it to continuously absorb excess moisture within the cavity over time. The two sealing layers act as both adhesives and effective seals. From the outside, double-glazed glass appears as two panes of glass held apart by discreet black aluminum spacers.
　　Hollow glass can replace traditional doors and windows.
　　Previously, traditional window and door glass, such as single-layer glass, often suffered from poor energy efficiency. The main reasons why insulated glass has replaced conventional glass are threefold.
　　1. Lightweight
　　Hollow glass
　　The glass incorporates a hollow layer inside, which increases its weight yet remains highly effective.
　　2. Low Cost
　　Cost-effective and efficient, since air is free—adjusting the amount of sealant used between gaps can effectively increase glass thickness. Alternatively, other methods like vacuumizing can be employed to enhance glass performance, making this solution particularly cost-efficient and high in value.

What is the hollow glass used in doors and windows?

The difference between frosted glass and tempered glass

What is the hollow glass used in doors and windows?

The difference between frosted glass and tempered glass

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Bent tempered steel glass

Tempered glass is produced by first cutting ordinary annealed glass into the desired dimensions, then heating it to around 700°C—close to its softening point—and subsequently cooling it rapidly and uniformly. (Typically, 5–6 mm-thick glass is heated at 700°C for about 240 seconds, followed by a cooling period of roughly 150 seconds. For 8–10 mm-thick glass, the heating process lasts approximately 500 seconds at 700°C, with a cooling phase of about 300 seconds. In general, the heating and cooling times vary depending on the glass thickness.) After tempering, a uniform compressive stress forms on the glass surface, while tensile stress develops internally, significantly enhancing the glass's resistance to bending and impact. As a result, tempered glass boasts a strength that is more than four times greater than that of ordinary annealed glass. However, once glass has been fully tempered, it can no longer undergo any further processing, such as cutting or grinding, nor can it sustain damage. Otherwise, disrupting the balanced compressive stress could cause the glass to shatter completely into tiny fragments.

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