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Laminated glass detailed introduction

PVB glass sandwich film is a kind of high polymer material which is molded by polyvinyl butyaldehyde resin and plasticized by DHA plasticizer. PVB glass sandwich film thickness is generally 0.38mm and 0.76mm two kinds, with good adhesion to inorganic glass, transparent, heat, cold, moisture resistance, high mechanical strength characteristics. PVB film is mainly used in laminated glass, which is sandwigged between two pieces of glass with a layer of PVB film with polyvinyl butyal as the main component. PVB laminated glass is widely used in construction, automobile and other industries because of its functions of safety, insulation, noise control and uv isolation.
Brief introduction:
PVB film produced by special formula has a wide range of applications in aerospace, military and high-tech industries, such as aircraft, spacecraft, military instruments, solar cells and solar receivers, etc., in the industrial field is used in composite damping steel plate, etc.
1, safety: in the foreign impact, because the elastic middle layer has the effect of absorbing the impact, can prevent the impact through, even if the glass is broken, only produce a spider mesh of fine cracks, the debris firmly adhered to the middle layer, will not fall off scattered wounding, and can continue to use until replacement.
2, anti-theft :PVB laminated glass is very tough, even if the thieves will crack the glass, because the middle layer with the glass firmly adhered together, still maintain integrity, so that the thieves can not enter the room. The installation of laminated glass can save the guardrail, both economical and beautiful can also get rid of the sense of cage.
3, sound insulation: because PVB film has the damping function of sound wave, PVB laminated glass can effectively suppress the propagation of noise, especially in the airport, station, downtown and road on both sides of the building after the installation of laminated glass, its sound insulation effect is very obvious.
4, anti-ultraviolet performance :PVB film can absorb more than 99% of the ultraviolet, so as to protect indoor furniture, plastic products, textiles, carpets, art, ancient cultural relics or commodities from ultraviolet radiation and fade and aging.
5, energy saving: building laminated glass made of PVB film can effectively reduce sunlight through. For the same thickness, laminated glass made from dark, low-transmittance PVB film is better at blocking heat. At present, the domestic production of laminated glass has a variety of colors.
Architecture (most architectural glass in Europe and America uses PVB laminated glass) :
In Europe and America, most of the building glass is PVB laminated glass, which is not only to avoid injury accidents, but also because PVB laminated glass has excellent anti-seismic invasion ability. The intermediate membrane can resist the continuous attack of hammers, wood cutters and other weapons. The special PVB laminated glass can also resist the penetration of bullets for a long time, and its security degree is extremely high.
Modern bedroom, sound insulation effect is good, has become one of the important factors that people measure housing quality. Laminated glass with PVB film can block sound waves and maintain a quiet and comfortable office environment. Its unique function of filtering ultraviolet rays not only protects people's skin health, but also makes the valuable furniture and exhibits in the home get rid of the bad luck of fading. It can also reduce the transmission of sunlight, reducing the energy consumption of refrigeration.
A lot of advantages of PVB interlayer glass, use in home adornment respect also can have the good effect that think not of intention. Be like the door of a lot of families, include the door of the kitchen, it is to make material with ground glass. Cooking kitchen smoke is easy to accumulate in the above, if using laminated glass instead, there will be no trouble. Same, the glass interval of large area in the home, it is a safety hidden danger to the child that is active to be born, if use sandwich glass, parents can rest assured greatly.
PVB laminated glass is safe to break. It may break under the impact of heavy ball, but the whole glass still maintains its integrity. The fragments and sharp small fragments are still stuck together with the middle film. Tempered glass needs a larger impact force to break, once broken, the whole piece of glass burst into countless fine particles, only a few broken glass in the frame. Ordinary glass breaks on impact, typically in a broken condition, producing many long sharp pieces. When the laminated glass is broken, the aperture is surrounded by the mirror toothed fragments, and there are more glass fragments around the penetration point, and the length of the metal wire is different.
With the rapid development of urbanization and real estate industry, the demand for PVB laminated glass has increased greatly. At present, China's urbanization progress is changing with each passing day, the increase of small cities, the transformation of large and medium-sized cities, the construction of urban infrastructure, become an important driving force to drive China's investment demand and economic growth, at the same time, there is a strong demand for PVB laminated glass. In addition, China's real estate industry is in the stage of rapid development. In the * quarter of 2005, China's real estate investment increased by 26.7%, which continues to maintain a rapid growth. With the rapid development of China's real estate industry, in recent years, China's decoration industry has been moving forward synchronously, with its total output value increasing by about 20% annually. The prosperity of building decoration industry has greatly influenced the consumption of building decoration materials. It is expected that in the next five years, the demand of PVB laminated glass is expected to exceed 15 billion yuan, thus becoming an important value-added factor that cannot be ignored in the development of national economy. In terms of consumption structure, housing is the primary growth point among the five consumption hotspots of housing, automobile, tourism, education and information service. From the perspective of market space, the rapid growth of real estate investment will support the steady rise in demand for PVB laminated glass.
Automotive (PVB laminated glass is widely used in automotive industry) :
PVB laminated glass has high strength, toughness, collision resistance, safety and transparency. Once broken, the fragments of the inside and outside glass can still bond to the PVB film. PVB film has a large toughness, and will arch up to absorb part of the impact energy when subjected to impact, which has a certain buffered effect, and its high-speed impact strength is higher than that of tempered glass. Field investigation records also show that tempered glass has a higher injury rate and a higher rate of eye splinters than laminated glass. In addition to the safety, the car PVB laminated glass also has anti-theft, sound insulation, ultraviolet protection, energy saving and other characteristics.
In view of the above characteristics, PVB laminated glass has been widely used in automobile industry.
In the first half of this year, China's economy continued to maintain steady and rapid growth, with the GDP growth rate reaching 9.5%. The development of domestic automobile market is still booming, and the automobile industry has become an important industry to support the development of national economy. In 2004, domestic automobile production and sales exceeded 5 million units, becoming the world's fourth largest automobile market after the United States, Japan and Germany. In 2004, China's automobile production and sales were 5.0705 million and 5.0711 million, with year-on-year growth of 14.11% and 15.50% respectively, and basically maintained a balance. In recent years, China's automobile production and sales have maintained a growth rate of more than 30%.
According to the statistics released by China Association of Automobile Manufacturers on August 12, as of July, this year's cumulative production and sales of 3.2613 million vehicles and 3.224 million vehicles, both exceeding the 3 million mark. Concerned expert predicts, sales volume of whole year car production 2005 will reach 5.5 million, exceed the car production volume of our country 2004. In the first half of this year, the sales volume of cars reached 1.3074 million, up 17.2% year on year, becoming the backbone driving the growth of the automobile market. The rapid growth of automobile sales provides a broad space for the development of laminated PVB film market of automobile glass. According to the relevant data of automobile Association, the consumption of laminated PVB glass for automobile in 2003 exceeded 20 billion yuan.
PVB laminated glass is a kind of safety glass because of its good impact resistance. It is mainly used in transportation and construction industry in China. According to the statistics of the glass industry association, China has more than 150 PVB laminated glass production lines, of which more than 50 introduced lines. The annual production capacity is about 20 million square meters, and the output in 2004 is more than 25 million square meters. It is expected that the output of PVB laminated glass in 2010 is expected to break through 50 million square meters.
With the rapid development of the construction and automotive industries, the demand for PVB laminated glass will grow rapidly, and the Chinese market has a bright future. Plastic processing association predicts that the demand of laminated film of our country PVB glass will reach 350,000 tons in 2005, and will break through 600,000 tons in 2010. At present, the PVB film used in PVB laminated glass is mainly imported. The PVB film from Japan, DuPont and Sunoc almost monopolized the market in China, which seriously restricted the development of PVB laminated glass processing enterprises. After more than 20 years of development, China's PVB raw materials, production technology, production equipment has been very mature, PVB film processing project has become the current hot investment.


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