The thermal insulation performance of thermally-insulated aluminum doors and windows is mainly achieved through the following key factors:

1. Thermally-insulated structure: Thermally-insulated aluminum doors and windows use thermal insulation strips to break the aluminum profile in the middle to form a "broken bridge". Thermal insulation strips are usually composed of nylon 66 plus 25% glass fiber, and their thermal conductivity is much lower than that of aluminum alloy, which effectively prevents indoor and outdoor heat from being conducted through aluminum.

For example, indoor hot air cannot be quickly transferred to the outside, and outdoor cold air is also difficult to quickly enter the room, thereby reducing heat exchange.

2. Double-layer or multi-layer insulating glass: Thermally-insulated aluminum doors and windows generally use double-layer or even multi-layer insulating glass. The air layer between the glass forms a thermal insulation barrier, and the poor thermal conductivity of the air hinders the transfer of heat.

It is like placing a layer of "insulation pad" between two layers of glass, which reduces the conduction of heat between the glass.

3. Sealing performance: High-quality sealing strips and sealing wool strips are installed at the contact point between the window frame and the window sash to form a good sealing effect. This can not only block the infiltration of air and reduce the convection of hot and cold air, but also further enhance the thermal insulation performance.

It is like putting on a "sealed protective suit" for doors and windows, effectively preventing heat from being lost through the gaps.

4. Design of window frames and sashes: Reasonable design of window frame and sash structure can reduce heat radiation and convection. For example, the joints of window frames and sashes are treated with special processes to reduce the path of heat loss.

In summary, the broken bridge aluminum doors and windows achieve excellent thermal insulation performance through broken bridge structure, hollow glass, good sealing and reasonable design, creating a comfortable temperature environment for the room and effectively reducing energy consumption.