First, the advantages of dimming glass
1. Safety: As the laminated glass process is adopted, the film in the dimming glass will firmly adhere to the glass, so that when the dimming glass is broken by impact, the glass fragments will stick to the middle film, and there will be no situation that the glass fragments splash and hurt people.
2. Environmental protection: The dimming film and film in the middle of the dimming glass can shield more than 90% of infrared rays and ultraviolet rays. Shielding infrared rays reduces thermal radiation and transmission. Ultraviolet shielding can protect indoor furnishings from fading and aging caused by ultraviolet radiation, and protect people from diseases caused by direct ultraviolet radiation.
3. Good sound insulation: the dimming film and film in the middle of the dimming glass have sound insulation effect, which can effectively block all kinds of noises.
Second, the practice of dimming glass
1, one-step vacuum forming method
The equipment structure and processing technology seem simple, but in the actual operation process, the accuracy of temperature control is very high, and problems such as bubbles, glue opening and large haze will occur if you are not careful. Because the production of dimming glass is very different from that of ordinary laminated glass and laminated glass, its production cost is high and the processing rejection rate cannot exceed 1%, so enterprises whose technical ability cannot be accurately controlled generally dare not use this method to produce dimming glass. At present, few domestic manufacturers have mastered the essence of "one-step" dimming glass processing, but the finished dimming glass made by this method has long service life and relatively stable performance. Our company adopts this method.
2. Autoclave treatment
The first process of autoclave processing is actually similar to one-step processing, and the autoclave is used for high pressure and high temperature molding in the later stage. Autoclave processing can effectively avoid bubbles, glue opening and other phenomena, but the shortcomings are also obvious. Because the pressure of glass formed by autoclave is twice that of one-time vacuum forming, the conductive film, the main interlayer material of dimming glass, will crack the conductive coating or increase the resistivity due to large shrinkage, which greatly shortens the performance and service life of finished dimming glass.
Autoclave equipment has high cost and great loss, which is suitable for mass production of laminated glass. However, the equipment used to darken the glass by the autoclave molding method must be dedicated and accurately adapt to the characteristics of the darkened glass. Unfortunately, at present, few manufacturers in China specialize in it, and most of them are mixed with conventional laminated glass. Frequent parameter adjustment of autoclave can't guarantee the parameter requirements of dimming glass, and it is easy to damage the equipment. Considering the temperature resistance and pressure resistance of liquid crystal film in intelligent electronic control dimming glass, it is not recommended to use high temperature autoclave for processing.
3. Water bath method
The water bath method is to immerse the sealed fixture in a water tank at 100℃, which is the most accurate and uniform temperature in various processing technologies. However, it is very difficult to manufacture the fixture, which is only adopted by Japanese manufacturers at present.
The above is an example of all kinds of information about dimming glass, including its manufacturing method, advantages and characteristics, as well as the explanatory text of the detail board. Therefore, although the price of the product is relatively high, it can switch the transparent and opaque state of glass according to the differences of electric control, temperature control and light control, so it has a good application prospect and good reputation. What is more commendable is that the dimming glass on the market has the advantages of stable performance and high safety factor. Friends who are interested in understanding or want to spend can refer to the above shop around and choose a satisfactory dimming glass according to their own needs.
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