Car headlights and windshield: tempered glass and laminated glass which price is high?
The sandwich price of high sandwich glass appears early. But this is two sorting methods.
Laminated glass 70 years have been.
Low-E glass is another new type of energy-saving glass that has emerged since the 1990s. It uses high-tech coating technology, in the glass surface coated with a special metal compound film, can reflect the infrared, far infrared radiation, blocking the heat transfer. At the same time, low-radiation glass still maintain a good light transmission, in blocking the heat transfer at the same time, does not affect the indoor light.
Analysis on the Development Trend and Problems of Architectural Glass
A) the development of the world building changes the requirements of the glass
?????From the beginning of the 1960s, with the advent of the first glass curtain wall, the building curtain wall has occupied the dominant position of the construction market and led the development of the construction industry technology. At present, the requirements of the building on the glass have gone from the white glass, Glass, heat reflective coating to low radiation coated glass. The color of the glass is also changed by colorless, brown, golden yellow to blue, green and finally to the direction of development. With the modern architectural design concept to the human nature, close to nature and the world's energy crisis awareness of the rising awareness of the importance of building energy efficiency is also increasing, the requirements of the glass gradually to the functional, permeability changes The The world's construction industry has a tendency to change the direction of glass to high-pass, low-reflection or anti-reflective directions.
?The physical tempered glass is characterized by high strength, the general strength can reach about 4 times the ordinary flat glass; safety - tempered glass broken immediately after the formation of small particles without sharp corners; drawback is the possibility of self-violence; physical tempered glass There are two varieties and all-tempered glass and heat-strengthened glass of the points, heat-enhanced glass does not exist the phenomenon of self-violence, but the intensity is only about twice the ordinary glass, most applications in high-rise buildings, improve wind pressure performance; Does not belong to safety glass.
????2) laminated glass
????Laminated glass is made of a layer of glass and one or more layers of glass, plastic material folder between the middle layer of glass products, the middle layer is between the glass or glass and plastic material between the bonding and isolation of the material, so that Laminated glass with anti-shock, sunlight control, noise and other properties; laminated glass is characterized by safety - even broken, it will not cause harm to people, such as car windshield glass; blocking ultraviolet light, reducing the object fade.
??Second, the main application of architectural glass varieties and characteristics
????1) tempered glass
?????It is the use of heating to a certain temperature after the rapid cooling method, or chemical methods for special treatment of glass. Generally on the basis of the original ordinary float glass, after the glass heated to the softening point temperature and then quenching treatment, so that the central part of the glass with tensile stress and glass surface parts with compressive stress and to achieve uniform stress balance of glass products. The tempered glass varieties include chemical steel, also known as ionization and physical tempering two kinds of chemical glass is characterized by the use of larger particles such as potassium ions to replace the glass surface of sodium ions in the temperature of about 400 degrees through a certain The finished glass can be cut, hot bending, etc., but after high temperature processing glass strength will be affected; chemical tempered glass initial strength can reach the original film 6-7 times, but with the use of time longer, performance Will be attenuated; due to the special nature of ion exchange, most of the use of ultra-thin glass.
