The main components of laThe main components of laminated glass are processed by autoclave, batch or continuous vacuum lamination, in-situ casting and rapid fusion radio frequency lamination technology. Laminated glass has changed the characteristics of traditional glass, which is brittle and hard, and is widely used in the isolation and interruption of windshields, transparent windows, business halls, etc. Compared with traditional glass, laminated coated glass can mainly achieve the following functions: sound insulation and UV isolation, lightweight and collision safety, and its light transmittance tester can accurately control the quality of laminated glass.
Features and functions of laminated glass
1. The sound insulation function
It is mainly realized by the PVB interlayer film material between the two layers of glass. The “plastic” of PVB is very similar to the plastic film we use every day. The raw material is white and translucent, and it can be completely transparent after being treated with high temperature and high pressure. Its light transmittance can be detected by a light transmittance tester. The PVB film can block external sound waves to a certain extent and reduce the impact of external noise on the cockpit. Compared with traditional tempered glass, this layer of film in laminated glass can reduce external noise by 3-5 decibels.
2. Anti-ultraviolet function
The use of laminated glass can block more than 95% of ultraviolet rays. Therefore, if the car is equipped with this kind of glass, in theory, there is no need to apply additional window film. Although it can block ultraviolet rays, its light transmittance is still similar to that of traditional glass, which makes privacy not guaranteed. If you mind to stick a dark film, the LS183 glass transmittance tester can test the ultraviolet and infrared rays at the same time. transmittance and light transmittance.
3. Lightweight
The tempered glass used in a compact SUV, including the front and rear windshields, windows and panoramic sunroof, weighs about 40 kilograms. If all the windows and sunroof glass are replaced from traditional 5mm thick tempered glass to 4mm thick laminated glass, the weight can be reduced by about 12 kg, and the lightweight effect is quite obvious.
4. Security
When the vehicle collides, the window glass may shatter and splash and hurt people. As for the laminated glass, because the film in the middle is tough, and the two layers of glass have been closely attached to itself during manufacture, the glass slag rarely splashes when impacted, and the fragments will still adhere to the film. This feature is also conducive to anti-theft. If a thief tries to break the window, the effort and time he spends will be several times that of breaking the traditional tempered glass.
Test method for light transmittance of laminated glass
As mentioned above, the LS183 optical transmittance tester can be used to detect the transmittance of laminated glass. The LS183 optical transmittance tester is mainly suitable for thermal insulation coatings, single-layer glass, laminated glass (insulating glass), film glass, PMMA Optical performance test of materials, PC materials, etc., can test the transmittance and light transmittance of ultraviolet and infrared rays at the same time, the width of the test card slot is 47mm, the parallel light path design, the test data of large thickness materials is also accurate, and the manufacturer offers preferential prices.
The test principle of LS183 optical transmittance tester is to use ultraviolet light source, infrared light source and visible light source to illuminate the measured transparent material. The sensor detects the incident light intensity of the three light sources and the light intensity after passing through the measured transparent material. The ratio of the light intensity to the incident light intensity is the transmittance, expressed as a percentage.
Through the above introduction, I believe everyone knows that laminated glass is far superior to traditional glass in function and safety. Even compared with glass with film, it has certain advantages in safety. The reason it is so popular!
