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Polyvinyl Butyral
Polyvinyl butyral (or PVB) is a resin mostly used for applications that require strong binding, optical clarity, adhesion to many surfaces, toughness and flexibility. It is prepared from polyvinyl alcohol by reaction with butyraldehyde. The major application is laminated safety glass for automobile windshields. Trade names for PVB-films include KB PVB, Saflex, GlasNovations, Butacite, WINLITE, S-Lec, Trosifol and EVERLAM. PVB is also available as 3D printer filament that is stronger and more heat resistant than polylactic acid (PLA). Applications Automotive and architectural Laminated glass, commonly used in the automotive and architectural fields, comprises a protective interlayer, usually polyvinyl butyral, bonded between two panels of glass. The bonding process takes place under heat and pressure. When laminated under these conditions, the PVB interlayer becomes optically clear and binds the two panes of glass together. Once sealed together, the glass "sandwich" (i.e., lamin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Resin
In polymer chemistry and materials science, resin is a solid or highly viscous substance of plant or synthetic origin that is typically convertible into polymers. Resins are usually mixtures of organic compounds. This article focuses on naturally occurring resins. Plants secrete resins for their protective benefits in response to injury. The resin protects the plant from insects and pathogens. Resins confound a wide range of herbivores, insects, and pathogens, while the volatile phenolic compounds may attract benefactors such as parasitoids or predators of the herbivores that attack the plant. Composition Most plant resins are composed of terpenes. Specific components are alpha-pinene, beta-pinene, delta-3 carene, and sabinene, the monocyclic terpenes limonene and terpinolene, and smaller amounts of the tricyclic sesquiterpenes, longifolene, caryophyllene, and delta-cadinene. Some resins also contain a high proportion of resin acids. Rosins on the other hand are less ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kingsport, Tennessee
Kingsport is a city in Sullivan and Hawkins counties in the U.S. state of Tennessee. As of the 2020 census, its population was 55,442. Lying along the Holston River, Kingsport is commonly included in what is known as the Mountain Empire, which spans a portion of southwest Virginia and the mountainous counties in northeastern Tennessee. It is the largest city in the Kingsport–Bristol metropolitan area, which had a population of 307,614 in 2020. The metro area is a component of the larger Tri-Cities region of Tennessee and Virginia, with a population of 508,260 in 2020. The name "Kingsport" is a simplification of "King's Port", originally referring to the area on the Holston River known as King's Boat Yard, the head of navigation for the Tennessee Valley. History Kingsport was developed after the Revolutionary War, at the confluence of the North and South Forks of the Holston River. In 1787 it was known as "Salt Lick" for an ancient mineral lick. It was first settle ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Synthetic Resins
Synthetic resins are industrially produced resins, typically viscous substances that convert into rigid polymers by the process of curing. In order to undergo curing, resins typically contain reactive end groups, such as acrylates or epoxides. Some synthetic resins have properties similar to natural plant resins, but many do not. Synthetic resins are of several classes. Some are manufactured by esterification of organic compounds. Some are thermosetting plastics in which the term "resin" is loosely applied to the reactant(s), the product, or both. "Resin" may be applied to one of two monomers in a copolymer, the other being called a "hardener", as in epoxy resins. For thermosetting plastics that require only one monomer, the monomer compound is the "resin". For example, liquid methyl methacrylate is often called the "resin" or "casting resin" while in the liquid state, before it polymerizes and "sets". After setting, the resulting poly(methyl methacrylate) (PMMA) is often rename ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vinyl Polymers
Vinyl may refer to: Chemistry * Polyvinyl chloride (PVC), a particular vinyl polymer * Vinyl cation, a type of carbocation * Vinyl group, a broad class of organic molecules in chemistry * Vinyl polymer, a group of polymers derived from vinyl monomers Materials * PVC clothing, a fabric * Vinyl composition tile, a type of floor tiling * Vinyl siding, an exterior building cladding Music * LP Records, commonly referred to as "vinyl" because they are made with PVC, a co-polymer of vinyl chloride acetate. * ''Vinyl'' (Dramarama album), 1991 * ''Vinyl'' (William Michael Morgan album), 2016 * ''Vinyl'' (EP), by Dramarama * Vinyl Solution, a record label * "Vinyl", a song by Kira Kosarin Film * ''Vinyl'' (1965 film), directed by Andy Warhol * ''Vinyl'' (2000 film), a documentary directed by Alan Zweig * ''Vinyl'' (2012 film), directed by Sara Sugarman about a 2004 musical hoax involving UK band, The Alarm Television * ''Vinyl'' (TV series), a 2016 American television series o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glass
Glass is a non-crystalline, often transparent, amorphous solid that has widespread practical, technological, and decorative use in, for example, window panes, tableware, and optics. Glass is most often formed by rapid cooling (quenching) of the molten form; some glasses such as volcanic glass are naturally occurring. The most familiar, and historically the oldest, types of manufactured glass are "silicate glasses" based on the chemical compound silica (silicon dioxide, or quartz), the primary constituent of sand. Soda–lime glass, containing around 70% silica, accounts for around 90% of manufactured glass. The term ''glass'', in popular usage, is often used to refer only to this type of material, although silica-free glasses often have desirable properties for applications in modern communications technology. Some objects, such as drinking glasses and eyeglasses, are so commonly made of silicate-based glass that they are simply called by the name of the material. Despite bei ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leverkusen
Leverkusen () is a city in North Rhine-Westphalia, Germany, on the eastern bank of the Rhine. To the south, Leverkusen borders the city of Cologne, and to the north the state capital, Düsseldorf. With about 161,000 inhabitants, Leverkusen is one of the state's smaller cities. The city is known for the pharmaceutical company Bayer and its sports club Bayer 04 Leverkusen. History The heart of what is now Leverkusen was Wiesdorf, a village on the Rhine, which dates back to the 12th century. With the surrounding villages which have now been incorporated, the area also includes the rivers Wupper and Dhünn, and has suffered a lot from flooding, notably in 1571 and 1657, the latter resulting in Wiesdorf being moved East from the river to its present location. During the Cologne War, from 1583 to 1588 Leverkusen was ravaged by war. The entire area was rural until the late 19th century, when industry prompted the development that led to the city of Leverkusen, and to its becoming ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bayer MaterialScience
Covestro AG is a German company which produces a variety of polyurethane and polycarbonate based raw materials. Products include isocyanates and polyols for cellular foams, thermoplastic polyurethane and polycarbonate pellets, as well as polyurethane based additives used in the formulation of coatings and adhesives. It is a Bayer spin off formed in the fall of 2015 and was formerly called Bayer MaterialScience, Bayer's materials science division.Christopher Alessi for the Wall Street Journal. Sept. 1, 201Bayer Separates Material Science Business Covestro/ref> Covestro shares were first offered on the Frankfurt Stock Exchange in October 2015. Bayer sold its entire remaining stake in May 2018, Bayer's pension fund had a 6.8% stake managed separately. The main industries served are automotive manufacturing and supply, electrical engineering and electronics, construction and home products, and sports and leisure. Their products include coatings and adhesives, polyurethanes that a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polyurethane
Polyurethane (; often abbreviated PUR and PU) refers to a class of polymers composed of organic chemistry, organic units joined by carbamate (urethane) links. In contrast to other common polymers such as polyethylene and polystyrene, polyurethane is produced from a wide range of starting materials. This chemical variety produces polyurethanes with different chemical structures leading to many List of polyurethane applications, different applications. These include rigid and flexible foams, varnishes and coatings, adhesives, Potting (electronics), electrical potting compounds, and fibers such as spandex and Polyurethane laminate, PUL. Foams are the largest application accounting for 67% of all polyurethane produced in 2016. A polyurethane is typically produced by reacting an isocyanate with a polyol. Since a polyurethane contains two types of monomers, which polymerize one after the other, they are classed as Copolymer#Alternating copolymers, alternating copolymers. Both the isocy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taiwan
Taiwan, officially the Republic of China (ROC), is a country in East Asia, at the junction of the East and South China Seas in the northwestern Pacific Ocean, with the People's Republic of China (PRC) to the northwest, Japan to the northeast, and the Philippines to the south. The territories controlled by the ROC consist of 168 islands, with a combined area of . The main island of Taiwan, also known as ''Formosa'', has an area of , with mountain ranges dominating the eastern two-thirds and plains in the western third, where its highly urbanised population is concentrated. The capital, Taipei, forms along with New Taipei City and Keelung the largest metropolitan area of Taiwan. Other major cities include Taoyuan, Taichung, Tainan, and Kaohsiung. With around 23.9 million inhabitants, Taiwan is among the most densely populated countries in the world. Taiwan has been settled for at least 25,000 years. Ancestors of Taiwanese indigenous peoples settled the isla ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Frankfurt
Frankfurt, officially Frankfurt am Main (; Hessian: , "Frank ford on the Main"), is the most populous city in the German state of Hesse. Its 791,000 inhabitants as of 2022 make it the fifth-most populous city in Germany. Located on its namesake Main River, it forms a continuous conurbation with the neighboring city of Offenbach am Main and its urban area has a population of over 2.3 million. The city is the heart of the larger Rhine-Main metropolitan region, which has a population of more than 5.6 million and is Germany's second-largest metropolitan region after the Rhine-Ruhr region. Frankfurt's central business district, the Bankenviertel, lies about northwest of the geographic center of the EU at Gadheim, Lower Franconia. Like France and Franconia, the city is named after the Franks. Frankfurt is the largest city in the Rhine Franconian dialect area. Frankfurt was a city state, the Free City of Frankfurt, for nearly five centuries, and was one of the most import ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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