First of all, the three belong to the "multi-layer glass", its structure includes: double glass, vacuum glass and insulating glass in three forms.
The so-called double glass, is the traditional doors and windows of the single-piece glass into two pieces of glass, because the two layers of glass between the air layer is not an effective sealing material for sealing, resulting in a lot of dust, moisture is very easy to enter Between the two pieces of glass, so double glass in the building is limited use of the product.
The so-called vacuum glass, as the name suggests is the glass between the two layers of space for the vacuum, which greatly reduces the thermal conductivity of the glass products; but the vacuum glass production process is very complex, can not achieve large quantities of industrial production, and the price High, so less common use in ordinary houses.
The so-called insulating glass, is the two pieces of glass through the effective sealing material sealing and spacing material separated, and between the two pieces of glass is filled with moisture absorption of desiccant, so as to ensure that the hollow glass for a long time for the dry air , No water vapor, dust exists; at the same time hollow glass easy to large-scale industrial production, so the hollow glass is a new building is a large number of recommended products.
The difference between laminated glass and insulating glass
1. Sandwich (folder) glass, is between the two pieces of glass into a layer of PVB interlayer. Even if the glass fragmentation, debris will be sticky on the film, broken glass surface remains clean and smooth. This effectively prevents debris from tying and penetrating the occurrence of falling events, ensuring personal safety.
2.Insulating glass between the glass and glass, leaving a certain cavity. Therefore, with good insulation, heat insulation, sound insulation and other properties. Such as between the glass filled with a variety of diffuse light material or dielectric, etc., you can get better voice, light control, heat insulation and other effects.
The difference between insulating glass and ordinary double glass
Hollow glass is made of two or more pieces of flat glass, the surrounding separated by a spacer frame, and sealed with a sealant, so that the glass layer between the formation of dry gas space glass deep processing products. It should be noted that the edge of the insulating glass is sealed with a sealant, the hollow glass cavity is filled with dry air or inert gas, the part of the gas is long sealed in the cavity, can not be convection with the outside air, Insulated glass on both sides of the heat will not be because of the convection between the glass and take away the heat. On the other hand, the air is a poor conductor of heat, and the two layers of glass separated by a sealing gas are less thermally conductive to each other, resulting in good heat insulation. In addition, the hollow glass on both sides of a large temperature difference, because a glass only feel the side of the temperature, monolithic glass surface will not have a lot of temperature difference. Therefore, in the hollow glass inside and outside the temperature difference is not particularly large (≥ 100 ℃), will not produce frost, condensation phenomenon. In addition, there is a need to note that the insulating glass is not a vacuum glass, hollow glass cavity gas pressure consistent with the outside world, otherwise it is very likely to cause broken glass.
Through the above explanation, we can know that insulating glass and ordinary double glass is essentially different. The most essential difference between the two is the former seal, the latter is not sealed. It is because the double-layer glass is not sealed so that dust, water vapor is easy to enter the glass cavity, water vapor cold frost, heat condensation, attached to the glass surface dust can never be removed, the installation will soon use, The glass blurred, filthy unbearable. Of course, double glass to a certain extent, can also play a certain sound insulation (entry "noise" provided by the industry Encyclopedia), heat insulation, but the performance is very different from the insulating glass.
Differences between insulating glass and double glass
Insulating glass is a combination of two or more pieces of glass, glass and glass between the space and the outside world with a sealant, which is air or other special gas. Insulating glass has excellent insulation and sound insulation, compared to brick or concrete walls are much lighter. For the building to save energy requirements, insulating glass with its irreplaceable superior performance is widely used.
Double glass and hollow glass common performance characteristics: a good insulation, noise, insulation, anti-condensation, reduce cold radiation and safety performance, energy saving is the first choice for energy-saving glass.
Insulating glass with insulation energy, sound insulation and anti-frost dew. Even if the outdoor temperature below -30 ℃, and the indoor temperature of 18 ℃, relative humidity (the term "relative humidity" by the industry encyclopedia) to reach more than 85%, sandwich will not frost and affect the line of sight and lighting.
Ordinary double glass and insulating glass is essentially different, the biggest difference is that ordinary two-story glass is not sealed around, which will make the sandwich air has a certain humidity, and with the outside (indoor, outdoor) air convection. Indoor air and glass sandwich in the air convection will cause condensation frost, both affect the line of sight and lighting, when the temperature rises, the glass surface of the frost into the water in the lower part of the sand caused by water. Second, the suspended particles in the air, dust in the sandwich inside and outside the convection is inevitably brought into the sandwich adhesion to the inner surface of the glass, over time will pollute the inner surface of the glass sandwich, cleaning difficult. Ordinary double glass has two advantages: First, the price is cheap; Second, in the same specifications and conditions, the ordinary double glass thermal conductivity slightly lower than the insulating glass, is conducive to thermal insulation warm.