Why is glass transparent?

As the chemical bond energy of ordinary phosphates, borates and silicates is quite large, the absorption caused by electron excitation itself is in the ultraviolet region, and there is generally no light absorption in visible light and near infrared, therefore, glass has no color. At the same time, glass molecules are macroscopically uniform, there are no particles that can cause light scattering, and the glass surface is smooth, which will not cause light scattering, so the glass is transparent.

What are the advantages of float glass over ordinary glass?

Float glass flatness is high, transparency is good, float glass automatic production, production efficiency is higher, float glass quality is good, glass utilization rate is high.

What are the characteristics of pigmented endothermic glass?

Body coloring heat absorption glass is to add a specific colorant in the basic glass components, so that the glass produces a variety of colors, such as blue, tawny, gray, green, and so on. The buildings and cars using this kind of glass on the one hand can meet the aesthetic requirements, more importantly, this kind of glass has the function of absorption line, so that the buildings and vehicles installing this kind of glass can reduce part of the solar radiation, reduce the installation and operation costs of air conditioning.

Storage conditions and precautions of glass?

(1) the glass must be kept in a dry room with a cover, and rainproof facilities should be provided during transportation and loading and unloading. Glass in storage, transportation, loading and unloading, the lid of the box is up, the box should not be placed flat or oblique.

(2) when the glass is transported, the direction of the box length should be transported in parallel, and measures should be taken to prevent the glass from falling or sliding.

(3) when the glass is used, measures should be taken to prevent the glass face and edge damage, generally the glass should be used on the mat wood.

(4) when the use of glass by the wind pressure or wind blowing, it is possible to collapse, should be taken according to the actual situation, to prevent the glass is blown down.

(5) when handling glass by hand, the following provisions shall be met:

When the glass handling, the original damage may be further expanded, resulting in broken glass, endangering personal safety, so the glass should be avoided in the process of handling damage.

Glass handling, windward glass by the action of the wind, when the glass area is larger or the wind is stronger, the bearer may not bear the load and fall. For this purpose, attention should be paid to the wind direction when moving large areas of glass to ensure safety.

What are the causes and preventive measures of glass mould?

Mould condition: glass surface is not flat, under the condition of long-term darkness. Causes of mildew: at first, water or moisture adsorbs on the surface of the glass, and then water or moisture diffused into the glass. The soluble silicate in the surface layer is hydrolyzed and destroyed. First, sodium silicate and potassium silicate are hydrolyzed and destroyed to form NaOH and silica. The separated silica forms a silica gel that forms a protective film on the surface of the glass, preventing further erosion. The hydrolyzed NaOH interacts with carbon dioxide in the air to form sodium carbonate, which accumulates on the surface of the glass and forms a soluble salt in the surface film. Due to its strong water absorption, it dehydrated and eventually formed small drops of lye, which changed when the surrounding temperature and humidity changed. If these lye droplets are in contact with the glass for a long time, part of the gelatinous silica film will be dissolved, and the glass surface will suffer serious local erosion, forming spots. At this time, sodium ions will migrate out of the glass and react with the air to form a white alkali-rich particle swarm, which can be observed under the scanning electron microscope.

Preventive measures: evenly sprinkle enough anti-mold powder on the surface of the glass and place it in a dry, cool and ventilated place.

Why should glass anneal, anneal is bad, have what effect to glass?

Annealing is to eliminate the residual stress in glass products to the greatest extent, eliminate the optical uniformity in the glass and stabilize the internal structure of glass products, annealing is not good, the brittleness of glass will increase, easy to break.

How can insulating glass increase its energy saving performance?

The insulating glass is filled with argon, low-e glass is used as the insulating glass, and the air layer thickness of the insulating glass is appropriately increased to 12mm. The warm edge system is adopted, and the white glass can be changed into color glass in the place with a long time in summer

The air inside the hollow glass won't let the film oxidize?

No, because the hollow glass has molecular sieve, and the molecular sieve always keep the air dry, so the film will not be oxidized.

In the place that elevation differs 1000 meters above, what effect to glass, how should handle?

Will have an impact on the glass, because the pressure difference, resulting in the internal and external pressure of the insulating glass, resulting in the damage of the insulating glass. Capillary tubes should be inserted into the insulating glass.

What is the demand for the thickness of the two substrates of insulating glass?

The thickness difference between the two substrates shall not exceed 3mm.

Why does the glass next to air conditioning break easily?

If the glass is damaged by thermal stress, it absorbs heat and makes the glass expand. However, the glass inside the aluminum frame cannot be exposed to radiation, resulting in uneven heating of the glass body, resulting in the formation of internal thermal stress, the thermal expansion of the glass in the central area produces tensile stress in the edge area, exceeding the tensile strength will break

How much uv can low-e glass reduce?

About 14 percent less uv than heat-reflecting glass and 25 percent less uv than white glass.

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