What is high performance glass and how to choose high quality glass?

In addition to sealing dry air between two layers of glass, the high-performance insulating glass should also be coated with a special metal film with good thermal performance on the air layer of the middle layer of the outer glass, which can block the sun's ultraviolet rays from entering the room. It is characterized by good energy-saving effect, heat insulation, heat preservation, and improved indoor environment. The exterior is available in eight colours and is of excellent decorative art value.

High-performance glass commonly used in architecture.

In terms of optics: low-e glass, heat reflective glass, prismatic glass.

In terms of strength: tempered glass, laminated glass, laminated glass.

In terms of heat conduction: insulating glass, vacuum glass, inert gas glass.

In terms of appearance: colored laminated glass, colored glazed glass, corroded glass, engraved glass.

In terms of usability: polymer plexiglass, fireproof glass, ultra-clear glass.

High performance refers to warm-sided insulating glass or lowe insulating glass, coated with metal film is lowe insulating glass, the meaning of heat transfer coefficient is about watts per square meter per hour, while ordinary monolithic glass is.

Hello, glass with light transmission, heat insulation, sound insulation, wear resistance, climate change resistance and other properties, and some also have the characteristics of heat preservation, heat absorption, radiation protection and so on. Special glass is widely used in mosaic building doors, windows, walls, interior decoration, etc.

Ultraviolet rays can penetrate glass, but the intensity of ultraviolet rays is greatly reduced after penetrating the glass.

UV-resistant glass is called UV-resistant glass, which can also be called or filtered UV glass. This glass can filter ultraviolet light, and although ultraviolet light has the effect of sterilization and disinfection, it must be avoided in some places, such as office buildings, furniture, libraries and other places.

Precautions for choosing glass

1. When buying glass, we must take into account its safety, many glass on the market do not have a brand, this kind of glass is best not to buy, only the quality of regular glass is ***, usually there will be a logo on the regular glass, if not, it means that the safety performance of this glass does not meet the standard, and there may be safety accidents after use.

2. When buying glass, you should also see the hardware it matches, to ensure excellent quality, you can touch your hands to see whether the accessories are firm, whether the outer layer is rough, if the outer layer is rough, do not buy.

In addition, according to the performance characteristics, glass is divided into: tempered glass, porous glass (that is, foam glass, with a pore size of about 40nm, used for seawater desalination, virus filtration, etc.), conductive glass (used as electrodes and aircraft windshield), glass-ceramic, opalescent glass (used for lighting devices and decorative items, etc.) and insulating glass (used as door and window glass).

Classification of automotive glass.

Laminated glass for automobiles.

Laminated glass refers to the use of a transparent adhesive plastic film pasted between the second or third layers of glass, combining the strength and toughness of the plastic with the hardness of the glass, increasing the resistance of the glass to shattering, and still maintaining visibility after breaking. It is mostly used in automobile windshields.

Tempered glass in the automotive area.

Regional tempered glass is a new variety of tempered glass, which has undergone special treatment, which can maintain a certain clarity when the crack of the glass is broken by impact, so as to ensure that the driver's field of vision is not affected. It is mostly used for automobile windshield and instrument protection screen.

There are five main types of fireproof glass, one is laminated composite fireproof glass, the second is wireless fireproof glass, the third is special fireproof glass, the fourth is insulating fireproof glass, and the fifth is high-strength single-layer cesium potassium fireproof glass. Of course, science and technology are constantly developing, so the relevant aspects are also constantly improving, the effectiveness of different types of glass is not the same, so its related production process and use are different, which requires us to consider and analyze in detail.

According to the performance characteristics, glass is divided into: tempered glass rubber glass, porous beam key liquid glass (i.e., foam glass, used for seawater desalination, virus filtration, etc.), bright conductive side electric glass (used as electrode and aircraft windshield), glass-ceramic, opalescent glass (used for lighting devices and decorative items, etc.) and insulating glass (used as door and window glass) and so on.

High-performance glass commonly used in architecture.

In terms of optics: low-e glass, heat-reflective glass, prismatic glass in terms of strength: tempered glass, laminated glass, laminated glass.

In terms of heat conduction: insulating glass, vacuum glass, inert gas glass in appearance: colored laminated glass, colored glazed glass, corroded glass, carved glass in terms of usability: polymer plexiglass, fireproof glass, ultra-clear glass.

Myth 1: The damage of the film layer of offline low-e glass is caused by oxidation.

In many cases, some of our experts, scholars or engineers attribute the destruction of the offline low-E glass coating to the result of the oxidation reaction between the silver in the film and the oxygen in the air. In fact, this oxidation is not very fast in general, in fact, most of its damage comes from sulfidation.

Since the off-line Low-E glass uses silver as the functional layer, there is a great affinity between silver and sulfur, and silver can easily form an extremely insoluble silver salt (Ag2S) when it encounters hydrogen sulfide gas or sulfur ions in the air (silver salt is the main component of galvanite). This chemical change can occur in very small amounts, and as long as silver encounters a few trillions to tens of trillions of parts per trillion of hydrogen sulfide gas or sulfur ions in the air, the following chemical reactions will occur:

4AG 2H2S O2=2AG2S (black product) 2H2O

This chemical reaction is much stronger and faster than a simple oxidation reaction. This is the main reason for the deterioration of the coating performance in most cases. In addition, the presence of residues and adsorbed moisture that is not removed in time during storage, transportation, cutting, edging, cleaning, processing, and use of offline low-e glass accelerates this chemical reaction.

Because water can adsorb sulfides in the air in large quantities, the concentration of sulfides accumulated is hundreds of times higher than that in the air, resulting in a stronger sulfidation reaction and a faster deterioration of the film performance. Therefore, the processing of offline low-e glass should be processed in areas with good atmospheric environmental conditions to ensure the performance of the film layer to the greatest extent.

Myth 2: The k value of thick glass is significantly lower than that of thin glass, and the k value of laminated glass is significantly lower than that of glass of the same thickness.

For ordinary float glass, the increase of the thickness of the monolithic glass does not improve the thermal insulation performance of the building greatly, such as the thickness of the glass compared with the thickness of the glass, the thickness of the glass is doubled, the weight of the glass is also doubled, but its k value is only reduced. The two types of glass are each used to form a 12 mm thick hydrogen-filled insulating glass, and the k-value of the two glasses only decreases. Therefore, it is very uneconomical to improve the thermal insulation performance of glass simply by increasing the thickness of the glass.

From the calculation of the glass performance later, it can be seen that the thickness of the 5mmc 5mmc laminate (the thickness of the glass is, the k value is lower than the K value of the thicker monolithic white glass, and the actual K value of the glass is reduced by a little more than 1% after deducting the thickness of the laminated glass. Therefore, the k-value of the glass cannot be greatly reduced by the laminated glass method.