What is virtual currency PVB
Publish: 2021-04-17 18:53:28
1.
PVB is polyvinyl butyral
polyvinylbutyral, abbreviated as PVB resin, type: thermoplastic resin, molecular formula: c14h18cl3s
soluble in methanol, n-propanol, isopropanol, n-pentanol, benzyl alcohol, butanol, diacetone alcohol, propylene glycol ether / methyl ether / propyl ether, acetone, methyl ethyl ketone, cyclohexanone, dichloromethane, chloroform, methyl acetate, ethyl acetate, butyl acetate, acetic acid, etc. It has excellent flexibility and flexibility
Because PVB resin has excellent optical clarity and its refractive index is similar to that of glass, the image picked up through the laminated glass will not appear optical distortion and double phase, which can ensure clear visionit has good weather resistance, and can maintain no deformation in a large temperature range; it has the rigidity combined with flexibility and excellent impact resistance; Excellent adhesion efficiency with various glass surfaces
Therefore, the high molecular weight PVB resin is added with 20% - 40% plasticizer, extruded into a film, and then firmly combined under heating and pressure to make safety glasswhen the outer glass is broken. It only forms an irregular crack (radial when shooting), and the fragments are still firmly adhered to the intermediate film, and do not scatter, causing injury, and can continue to be used within a certain period of time (without affecting the line of sight), with good safety performance. Therefore, it is widely used in automobile windscreens, aircraft, windows and doors of high-rise buildings and special protective glass
development status of PVB:
PVB (polyvinyl butyral) is not widely used in China at present, among which PVB intermediate membrane is a kind of polymer material plasticized and extruded by plasticizer
e to the complexity of PVB membrane processing technology, only a few international multinational companies such as the United States, Japan and Germany have this technology
it is not that there are no PVB manufacturers in China, mainly because the technology of equipment and manufacturing process can not reach the level of foreign countries. So there is still a certain distance in proct quality
there are no less than 20 manufacturers of PVB film in China. Among these 20 manufacturers, only a few use resin powder
Because PVB film can be recycled. Therefore, in order to seek huge profits, some manufacturers use PVB leftovers and foreign manufacturers' sub brand procts to proce. The recycled PVB film has great changes in quality stability and proct weatherability. Therefore, many well-known glass enterprises use imported PVB film2. PVB is polyvinyl butyral, which is an important chemical proct. It is mainly used in adhesives, impact and high temperature resistant plastics, insulating paint, environmental protection and waterproof agent, heat transfer sheet and other fields
the main proction processes are homogeneous process and heterogeneous process
domestic proction: 1 family, 8 days, 3 yuan, 4 high, 0 point, 6 children, 7 trees, 5 fats, 2 Limited, 1 company.
the main proction processes are homogeneous process and heterogeneous process
domestic proction: 1 family, 8 days, 3 yuan, 4 high, 0 point, 6 children, 7 trees, 5 fats, 2 Limited, 1 company.
3. Introction to PVB sandwich film
PVB glass sandwich film is a kind of polymer material made of polyvinyl butyral resin, plasticized and extruded by plasticizer DHA. The thickness of PVB glass sandwich film is generally 0.38mm and 0.76mm. It has good adhesion to inorganic glass, transparent, heat-resistant, cold resistant, moisture resistant and high mechanical strength
PVB film is mainly used for laminated glass, in which a layer of PVB film with polyvinyl butyral as the main component is sandwiched between two pieces of glass. PVB laminated glass is widely used in construction, automobile and other instries because of its safety, heat preservation, noise control and UV isolation. PVB films with special formulation are also widely used in aerospace, military and high-tech instries, such as aircraft, spacecraft, military instruments, solar cells and solar receivers, and composite damping steel plate in instry
PVB laminated glass has the following five characteristics:
1. Safety: in case of external impact, the elastic intermediate layer can absorb the impact and prevent the penetration of the impact object. Even if the glass is damaged, it will only proce fine cracks similar to spider web, and the fragments will firmly adhere to the intermediate layer and will not fall off and hurt people, And can continue to use until replacement
2. Anti theft: PVB laminated glass is very tough. Even if thieves crack the glass, the integrity of the middle layer is still maintained because the glass is firmly adhered to the glass, so that thieves can not enter the room. The installation of laminated glass can save the guardrail, save money and beautiful, and get rid of the cage feeling
3. Sound insulation: e to the sound wave damping function of PVB film, PVB laminated glass can effectively suppress the transmission of noise, especially for buildings located at airports, stations, downtown areas and both sides of roads
4. UV protection: PVB film can absorb more than 99% of UV, thus protecting indoor furniture, plastic procts, textiles, carpets, art works, ancient cultural relics or commodities from fading and aging caused by UV radiation
5. Energy saving: the laminated glass made of PVB film can effectively rece the sunlight transmission. With the same thickness, the laminated glass made of dark PVB film with low transmittance has better heat barrier ability. At present, laminated glass proced in China has many colors< In Europe and the United States, most of the building glass is PVB laminated glass
in Europe and the United States, 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 seismic invasion ability. The intermediate membrane can resist the continuous attack of hammers, firewood cleavers and other lethal weapons, and the special PVB laminated glass can resist bullet penetration for a long time, so its security degree is very high
whether the sound insulation effect is good in modern rooms has become one of the important factors for people to measure the quality of housing. The laminated glass with PVB film can block sound waves and maintain a quiet and comfortable office environment. Its unique function of filtering ultraviolet rays can not only protect people's skin health, but also get rid of the bad luck of fading of valuable furniture and display goods at home. It can also rece the transmission of sunlight and rece refrigeration energy consumption
PVB laminated glass has many advantages, which can be used in home decoration with unexpected good results. So many family doors, including kitchen doors, are made of frosted glass. Cooking kitchen fumes easy to accumulate in the above, if replaced by laminated glass, there will be no trouble. Similarly, a large area of glass space in the home is a potential safety hazard for naturally active children. If laminated glass is used, parents can be greatly relieved
the PVB laminated glass is safe to crack and may break under the impact of heavy ball, but the whole glass remains integrated, and the fragments and sharp small fragments are still stuck together with the intermediate film. Toughened glass needs a large impact force to break, once broken, the whole glass burst into countless fine particles, only a little broken glass in the frame. Ordinary glass will be broken as soon as it is collided, which is a typical breaking condition, procing many long sharp pieces. When the laminated glass is broken, the tooth shaped fragments of the mirror surround the hole, and there are many glass fragments around the penetration point, and the length of the wire is different
with the rapid development of urbanization and real estate instry, the demand for PVB laminated glass has increased significantly. At present, the progress of China's urbanization is changing with each passing day. The increase of small cities, the transformation of large and medium-sized cities, and the construction of urban infrastructure have become an important driving force for 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 instry is in the stage of rapid development. In the first quarter of 2005, China's real estate investment increased by 26.7%, and continued to maintain rapid growth. With the rapid development of China's real estate instry, China's decoration instry is also moving forward in recent years, and its total output value is increasing by about 20% every year. The prosperity of building decoration instry greatly affects the consumption of building decoration materials. It is expected that the demand of PVB laminated glass will exceed 15 billion yuan in the next five years, which will become an important value-added factor in the development of national economy. From the perspective of consumption structure, among the five consumption hotspots of housing, automobile, tourism, ecation and information services, housing is the primary growth point. From the perspective of market space, the rapid growth of real estate investment will support the steady rise of demand for PVB laminated glass
PVB laminated glass for automobile
PVB laminated glass has high strength, toughness, anti-collision ability, good safety and high transparency. Once broken, the fragments of the inner and outer glass layers can still adhere to the PVB film. PVB film has great toughness, and it will arch when it is impacted, so as to absorb part of the impact energy, and has a certain buffer effect. Its high-speed impact strength is higher than that of tempered glass. Field investigation records also show that tempered glass has a higher casualty rate than laminated glass, and the rate of eye injury caused by fragments is also higher. In addition to safety, PVB laminated glass also has the characteristics of anti-theft, sound insulation, anti ultraviolet, energy saving and so on
in view of the above characteristics, PVB laminated glass is widely used in the automotive instry
in the first half of the year, China's economy continued to maintain a stable and high-speed growth, with GDP growth rate reaching 9.5%. The development of the domestic automobile market is still booming, and the automobile instry has become an important instry to support the development of the national economy. In 2004, the domestic automobile proction and sales exceeded 5 million, becoming the fourth largest automobile market in the world after the United States, Japan and Germany. In 2004, China's automobile proction and sales were 5.0705 million and 5.0711 million, with a year-on-year growth of 14.11% and 15.50% respectively, and basically maintained a balance. In recent years, China's automobile proction and sales have maintained a growth rate of more than 30%
according to the latest statistics released by the China Association of automobile manufacturers, as of July, the total proction and sales of automobiles in China this year were 3.2613 million and 3.224 million, both exceeding the 3 million mark. Relevant experts predict that the annual proction and sales of automobiles in 2005 will reach 5.5 million, exceeding the proction and sales of automobiles in 2004. Among them, in the first half of the year, the sales volume of cars reached 1.3074 million, up 17.2% year on year, becoming the backbone of driving the growth of automobile market. The rapid growth of automobile sales provides a broad space for the development of PVB film market. According to the relevant data of Automobile Association, the consumption of PVB laminated glass for automobile exceeded 20 billion yuan in 2003
summary: PVB laminated glass is a kind of safety glass because of its good impact resistance, which is mainly used in transportation and construction instry in China. According to the statistics of the glass instry association, there are more than 150 PVB laminated glass proction lines in China, including more than 50 imported lines, with an annual proction capacity of about 20 million square meters. The output in 2004 is more than 25 million square meters. It is expected that the output of PVB laminated glass will exceed 50 million square meters in 2010
with the rapid development of the construction and automobile instry, the demand for PVB laminated glass will develop rapidly, and the Chinese market will have a bright future. The plastic processing association predicts that the demand of PVB glass laminated film in China will reach 350000 tons in 2005 and 600000 tons in 2010. At present, the PVB films used in PVB laminated glass mainly rely on imports. The PVB films of Japan Shuishui, DuPont and shounuo almost monopolize the market in China, which seriously restricts the development of PVB laminated glass processing enterprises. After more than 20 years of development, China's PVB raw materials, proction technology, proction equipment has been very mature, PVB film processing project has become a hot investment.
PVB glass sandwich film is a kind of polymer material made of polyvinyl butyral resin, plasticized and extruded by plasticizer DHA. The thickness of PVB glass sandwich film is generally 0.38mm and 0.76mm. It has good adhesion to inorganic glass, transparent, heat-resistant, cold resistant, moisture resistant and high mechanical strength
PVB film is mainly used for laminated glass, in which a layer of PVB film with polyvinyl butyral as the main component is sandwiched between two pieces of glass. PVB laminated glass is widely used in construction, automobile and other instries because of its safety, heat preservation, noise control and UV isolation. PVB films with special formulation are also widely used in aerospace, military and high-tech instries, such as aircraft, spacecraft, military instruments, solar cells and solar receivers, and composite damping steel plate in instry
PVB laminated glass has the following five characteristics:
1. Safety: in case of external impact, the elastic intermediate layer can absorb the impact and prevent the penetration of the impact object. Even if the glass is damaged, it will only proce fine cracks similar to spider web, and the fragments will firmly adhere to the intermediate layer and will not fall off and hurt people, And can continue to use until replacement
2. Anti theft: PVB laminated glass is very tough. Even if thieves crack the glass, the integrity of the middle layer is still maintained because the glass is firmly adhered to the glass, so that thieves can not enter the room. The installation of laminated glass can save the guardrail, save money and beautiful, and get rid of the cage feeling
3. Sound insulation: e to the sound wave damping function of PVB film, PVB laminated glass can effectively suppress the transmission of noise, especially for buildings located at airports, stations, downtown areas and both sides of roads
4. UV protection: PVB film can absorb more than 99% of UV, thus protecting indoor furniture, plastic procts, textiles, carpets, art works, ancient cultural relics or commodities from fading and aging caused by UV radiation
5. Energy saving: the laminated glass made of PVB film can effectively rece the sunlight transmission. With the same thickness, the laminated glass made of dark PVB film with low transmittance has better heat barrier ability. At present, laminated glass proced in China has many colors< In Europe and the United States, most of the building glass is PVB laminated glass
in Europe and the United States, 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 seismic invasion ability. The intermediate membrane can resist the continuous attack of hammers, firewood cleavers and other lethal weapons, and the special PVB laminated glass can resist bullet penetration for a long time, so its security degree is very high
whether the sound insulation effect is good in modern rooms has become one of the important factors for people to measure the quality of housing. The laminated glass with PVB film can block sound waves and maintain a quiet and comfortable office environment. Its unique function of filtering ultraviolet rays can not only protect people's skin health, but also get rid of the bad luck of fading of valuable furniture and display goods at home. It can also rece the transmission of sunlight and rece refrigeration energy consumption
PVB laminated glass has many advantages, which can be used in home decoration with unexpected good results. So many family doors, including kitchen doors, are made of frosted glass. Cooking kitchen fumes easy to accumulate in the above, if replaced by laminated glass, there will be no trouble. Similarly, a large area of glass space in the home is a potential safety hazard for naturally active children. If laminated glass is used, parents can be greatly relieved
the PVB laminated glass is safe to crack and may break under the impact of heavy ball, but the whole glass remains integrated, and the fragments and sharp small fragments are still stuck together with the intermediate film. Toughened glass needs a large impact force to break, once broken, the whole glass burst into countless fine particles, only a little broken glass in the frame. Ordinary glass will be broken as soon as it is collided, which is a typical breaking condition, procing many long sharp pieces. When the laminated glass is broken, the tooth shaped fragments of the mirror surround the hole, and there are many glass fragments around the penetration point, and the length of the wire is different
with the rapid development of urbanization and real estate instry, the demand for PVB laminated glass has increased significantly. At present, the progress of China's urbanization is changing with each passing day. The increase of small cities, the transformation of large and medium-sized cities, and the construction of urban infrastructure have become an important driving force for 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 instry is in the stage of rapid development. In the first quarter of 2005, China's real estate investment increased by 26.7%, and continued to maintain rapid growth. With the rapid development of China's real estate instry, China's decoration instry is also moving forward in recent years, and its total output value is increasing by about 20% every year. The prosperity of building decoration instry greatly affects the consumption of building decoration materials. It is expected that the demand of PVB laminated glass will exceed 15 billion yuan in the next five years, which will become an important value-added factor in the development of national economy. From the perspective of consumption structure, among the five consumption hotspots of housing, automobile, tourism, ecation and information services, housing is the primary growth point. From the perspective of market space, the rapid growth of real estate investment will support the steady rise of demand for PVB laminated glass
PVB laminated glass for automobile
PVB laminated glass has high strength, toughness, anti-collision ability, good safety and high transparency. Once broken, the fragments of the inner and outer glass layers can still adhere to the PVB film. PVB film has great toughness, and it will arch when it is impacted, so as to absorb part of the impact energy, and has a certain buffer effect. Its high-speed impact strength is higher than that of tempered glass. Field investigation records also show that tempered glass has a higher casualty rate than laminated glass, and the rate of eye injury caused by fragments is also higher. In addition to safety, PVB laminated glass also has the characteristics of anti-theft, sound insulation, anti ultraviolet, energy saving and so on
in view of the above characteristics, PVB laminated glass is widely used in the automotive instry
in the first half of the year, China's economy continued to maintain a stable and high-speed growth, with GDP growth rate reaching 9.5%. The development of the domestic automobile market is still booming, and the automobile instry has become an important instry to support the development of the national economy. In 2004, the domestic automobile proction and sales exceeded 5 million, becoming the fourth largest automobile market in the world after the United States, Japan and Germany. In 2004, China's automobile proction and sales were 5.0705 million and 5.0711 million, with a year-on-year growth of 14.11% and 15.50% respectively, and basically maintained a balance. In recent years, China's automobile proction and sales have maintained a growth rate of more than 30%
according to the latest statistics released by the China Association of automobile manufacturers, as of July, the total proction and sales of automobiles in China this year were 3.2613 million and 3.224 million, both exceeding the 3 million mark. Relevant experts predict that the annual proction and sales of automobiles in 2005 will reach 5.5 million, exceeding the proction and sales of automobiles in 2004. Among them, in the first half of the year, the sales volume of cars reached 1.3074 million, up 17.2% year on year, becoming the backbone of driving the growth of automobile market. The rapid growth of automobile sales provides a broad space for the development of PVB film market. According to the relevant data of Automobile Association, the consumption of PVB laminated glass for automobile exceeded 20 billion yuan in 2003
summary: PVB laminated glass is a kind of safety glass because of its good impact resistance, which is mainly used in transportation and construction instry in China. According to the statistics of the glass instry association, there are more than 150 PVB laminated glass proction lines in China, including more than 50 imported lines, with an annual proction capacity of about 20 million square meters. The output in 2004 is more than 25 million square meters. It is expected that the output of PVB laminated glass will exceed 50 million square meters in 2010
with the rapid development of the construction and automobile instry, the demand for PVB laminated glass will develop rapidly, and the Chinese market will have a bright future. The plastic processing association predicts that the demand of PVB glass laminated film in China will reach 350000 tons in 2005 and 600000 tons in 2010. At present, the PVB films used in PVB laminated glass mainly rely on imports. The PVB films of Japan Shuishui, DuPont and shounuo almost monopolize the market in China, which seriously restricts the development of PVB laminated glass processing enterprises. After more than 20 years of development, China's PVB raw materials, proction technology, proction equipment has been very mature, PVB film processing project has become a hot investment.
4. PVB: polyvinyl butyral
5. P-vinylbenzyl chloride pvbc
6. PVB film has good adhesiveness, toughness and elasticity. When laminated glass is strongly impacted by external force, the film will absorb a lot of energy. Glass fragments will firmly adhere to the PVB intermediate film, and glass fragments will not fly away, so as to minimize the possible damage. In general, it has many functions, such as safety, heat preservation, noise control and UV isolation, It is the intermediate film of laminated glass
7. After opening, it is usually placed in the film closing room. If the package is in good condition, there is no need for special storage conditions!
8. The full name of PVB is polyvinyl butyral. The sandwich material of sandwich glass is not necessarily PVB, but EVA and SGP. According to the use environment and requirements of glass, its interlayer is also different.
9. Chloroform, methyl acetate, ethyl acetate, butyl acetate, acetic acid, etc. It has excellent flexibility and flexibility
PVB is mainly used for copper foil adhesive, insulating paint, impact resistant and high temperature resistant plastic, environmental protection waterproof agent, heat transfer sheet, ink, anti-seepage coating, primer, modified plasticizer, compatibility with other polymers, etc
1 person in camp 8 days 3 yuan 4 high 0 points 6 children 7 trees 5 fats 5 have 2 Limited 1 company
PVB is mainly used for copper foil adhesive, insulating paint, impact resistant and high temperature resistant plastic, environmental protection waterproof agent, heat transfer sheet, ink, anti-seepage coating, primer, modified plasticizer, compatibility with other polymers, etc
1 person in camp 8 days 3 yuan 4 high 0 points 6 children 7 trees 5 fats 5 have 2 Limited 1 company
10. 1. PVB is the abbreviation of polyvinyl butyral; EVA is the abbreviation of ethylene vinyl acetate copolymer.
2. Processing and storage conditions: PVB needs to be processed and stored at low temperature (18-22 ℃) and dry (humidity 25% - 40%). Especially, the requirement of humidity is very strict. The lamination needs high temperature (120-140 ℃) and high pressure (1.0-1.5mpa), most of which are proced by autoclave; The processing and storage conditions of EVA are relatively low, the temperature is not more than 30 ℃, the humidity is less than 80%, and the requirements of laminating equipment are also low, the vacuum degree is more than 700 mmHg (0.092 MPa), and the temperature is 100-110 ℃; The process of PVB is more complex than EVA, with longer time and higher energy consumption
generally speaking, EVA has advantages over PVB and is easy to operate, and CAIDA EVA glass film is quite good
2. Processing and storage conditions: PVB needs to be processed and stored at low temperature (18-22 ℃) and dry (humidity 25% - 40%). Especially, the requirement of humidity is very strict. The lamination needs high temperature (120-140 ℃) and high pressure (1.0-1.5mpa), most of which are proced by autoclave; The processing and storage conditions of EVA are relatively low, the temperature is not more than 30 ℃, the humidity is less than 80%, and the requirements of laminating equipment are also low, the vacuum degree is more than 700 mmHg (0.092 MPa), and the temperature is 100-110 ℃; The process of PVB is more complex than EVA, with longer time and higher energy consumption
generally speaking, EVA has advantages over PVB and is easy to operate, and CAIDA EVA glass film is quite good
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