Several common damages of dimming glass/dimming film
Editor:Longsheng optronics   Date:09.04.2021  Times:271 times

As a high-end glass, dimming glass may cause irreparable damage if installed or used improperly. So what are the conditions that cause damage to the dimming glass? How can we avoid these situations? Today we will talk about it.

01 breakdown

Dimming glass breakdown means that after the glass is energized, some areas of the dimming film will instantly appear sparks and form irregularly shaped black spots. The cause of the blow-through phenomenon is that the voltage is too high.

We know that dimming glass requires a special transformer to convert 110V or 220V voltage into 60V or 48V working voltage. For example, the working voltage of dimming glass is 60V. If the voltage is lower than 60V, the transparency of the glass will decrease, and if the voltage is higher than 60V, the transparency of the glass will no longer increase. When the voltage rises to a certain level, it will break down. The breakdown depends on the situation.

When using dimming glass, you must first connect a dedicated and stable transformer, and never directly connect to the mains or reverse the transformer. Especially in the case of reverse connection, the voltage will be higher and the breakdown point will be more and bigger.

02 Artificial scratching on the surface of the dimming film

The bonding between the glass film and the glass is very strong, and it will not fall off for 15-20 years under normal conditions. We should consider its "service life". The following is mainly for the self-adhesive film.

Do not scrub the filmed glass film with water. After the glass film is applied, do not hang any objects on the glass with suction cups or use adhesives, and do not paste stickers on the glass film; do not rub the glass film with rags or hard objects containing grit; clean When moving along a fixed direction. If used improperly, when the glass is severely scratched, the scratches can be clearly felt on the fingers and nails.

03 Opening the glue

Glue opening refers to the appearance of jagged milky white areas on the dimming film at the edge of the dimming glass, which can only be seen when the glass is in a transparent state. Glue opening is generally caused by using corrosive glass glue to seal the edges. Even neutral glass glue may corrode the dimming film.

Therefore, when sealing the edge of the dimming glass, you must use the special glass glue provided by our company. Don't replace it with other glass glue because there is no special glass glue, otherwise the glue may be opened after a period of time.

04 Transformer power aging

The insulation aging of the transformer refers to the phenomenon that the insulating material gradually loses its mechanical strength and electrical strength due to heat or other physical and chemical effects. Transformer insulation aging is mainly caused by chemical reactions caused by temperature, humidity, oxygen and certain decomposition products in oil, but the insulation aging speed is mainly determined by temperature.

During operation, the higher the working temperature of the insulation, the faster the chemical reaction (mainly oxidation) proceeds, the faster the insulation aging speed, and the shorter the service life (life) of the transformer.

Therefore, this phenomenon only needs to be replaced with a new transformer power supply.

05 Shrinking

Shrinking refers to the appearance of transparent areas on the edge of the dimming glass. The liquid crystal layer of this block has been damaged, and the effect of the change has been lost. There are two main possibilities for shrinking edges: one is the use of improper glass glue; the other is the uneven force on the glass during handling and installation. So be sure to use special glass glue when installing! Be sure to handle it carefully!

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