|
Poly(p-phenylene Sulfide)
Polyphenylene sulfide (PPS) is an organic polymer consisting of aromatic rings linked by thioether, sulfides. Synthetic fiber and textiles derived from this polymer resist chemical and thermal attack. PPS is used in air filter, filter fabric for coal boilers, papermaking felts, electrical insulation, film capacitor#Polyphenylene sulfide (PPS) film capacitors, film capacitors, specialty synthetic membrane, membranes, gaskets, and seal (mechanical), packings. PPS is the precursor to a conductive polymer of the semi-flexible rod polymer family. The PPS, which is otherwise insulating, can be converted to the semiconductor, semiconducting form by oxidation or use of dopants.David Parker, Jan Bussink, Hendrik T. van de Grampel, Gary W. Wheatley, Ernst-Ulrich Dorf, Edgar Ostlinning, Klaus Reinking, "Polymers, High-Temperature" in Ullmann's Encyclopedia of Industrial Chemistry 2002, Wiley-VCH: Weinheim. Polyphenylene sulfide is an engineering plastic, commonly used today as a high-perf ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polyphenylene Sulfide
Polyphenylene sulfide (PPS) is an organic polymer consisting of aromatic rings linked by sulfides. Synthetic fiber and textiles derived from this polymer resist chemical and thermal attack. PPS is used in filter fabric for coal boilers, papermaking felts, electrical insulation, film capacitors, specialty membranes, gaskets, and packings. PPS is the precursor to a conductive polymer of the semi-flexible rod polymer family. The PPS, which is otherwise insulating, can be converted to the semiconducting form by oxidation or use of dopants.David Parker, Jan Bussink, Hendrik T. van de Grampel, Gary W. Wheatley, Ernst-Ulrich Dorf, Edgar Ostlinning, Klaus Reinking, "Polymers, High-Temperature" in Ullmann's Encyclopedia of Industrial Chemistry 2002, Wiley-VCH: Weinheim. Polyphenylene sulfide is an engineering plastic, commonly used today as a high-performance thermoplastic. PPS can be molded, extruded, or machined to tight tolerances. In its pure solid form, it may be opaque white ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Seal (mechanical)
A seal is a device or material that helps join systems, mechanisms or other materials together by preventing leak, leakage (e.g. in a wikt:pumping, pumping system), containing pressure, or excluding contamination. The effectiveness of a seal is dependent on adhesion in the case of sealants and compression in the case of gaskets. The seals are installed in pumps in a wide range of industries including chemicals, water supply, paper production, food processing and many other applications. A stationary seal may also be referred to as a 'packing'. Seal types: *Induction sealing or cap sealing *Sealant, Adhesive, sealant *Bodok seal, a specialized gas sealing washer for medical applications *Bonded seal, also known as Dowty Group, Dowty seal or Dowty washer. A type of Washer (hardware), washer with integral gasket, widely used to provide a seal at the entry point of a screw or bolt *Bridgman seal, a piston sealing mechanism that creates a high pressure reservoir from a lower pressure ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
DIC Corporation
is a Japanese chemical company, specializing in the development, manufacture and sale of inks, pigments, polymers, specialty plastics and compounds and biochemicals. It was founded in 1908 as Kawamura Ink Manufactory, renamed to Kawamura Kijuro Shoten in 1915, incorporated as Dainippon Printing Ink Manufacturing in 1937 and renamed to Dainippon Ink and Chemicals (DIC) in 1962 before the name was changed to the present name DIC Corporation in 2008 on the occasion of its 100th anniversary. The company slogan "Color & Comfort By Chemistry" suggests that DIC products should deliver color and comfort to daily life. The company operates worldwide (through 176 subsidiary and affiliate companies in 62 countries) and includes the Sun Chemical corporation, based in the Americas and Europe. DIC in Japan has 10 plants in Japan, located in Tokyo, Chiba, Hokuriku, Sakai, Kashima, Yokkaichi, Shiga, Komaki, Saitama, and Tatebayashi. The main research laboratory in Japan is located in Sakur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Celanese
Celanese Corporation, formerly known as Hoechst Celanese, is an American technology and specialty materials company headquartered in Irving, Texas. It is a Fortune 500 corporation. The company is the world's leading producer of acetic acid, producing about 1.95 million tonnes per year, representing approximately 20% of global production. Celanese is also the world's largest producer of vinyl acetate monomer (VAM). Celanese operates 25 production plants and six research centers in 11 countries, mainly in North America, Europe, and Asia. The company owns and operates the world's three largest acetic acid plants: one in the Clear Lake area of Pasadena, Texas, one on Jurong Island in Singapore, and a third in Nanjing, China. History In 1918, the American Cellulose & Chemical Manufacturing Company (known as Amcelle) was founded in New York City by Swiss chemist Camille Dreyfus. The American Cellulose and Chemical Manufacturing Co. Ltd plant in Cumberland, Maryland, was set ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
HDC Polyall
HDC may refer to: Computing * Hyperdimensional computing, a computer science approach * Handle of Device Context, part of the GDI API * High-Definition Coding, an audio codec * ; a Unix-like ATA device file Law * Holder in due course, in commercial law * Home Detention Curfew, United Kingdom Music * Heavyweight Dub Champion, an American electronic group * Herräng Dance Camp, Sweden Organizations * Halal Industry Development Corporation, Malaysia * Health and Disability Commissioner, New Zealand * Health Data Consortium, US * Historic Districts Council, New York City, US * Honeysuckle Development Corporation, NSW, Australia * HDC Hyundai Development Company, South Korea Transportation * Haldia Dock Complex, of the Port of Kolkata, India * Hammond Northshore Regional Airport (FAA LID code), Louisiana, US * Hill descent control system, of an automobile Other uses * Histidine decarboxylase The enzyme histidine decarboxylase (, HDC) is transcribed on chromosome 15, region q21.1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kureha Chemical Industries
is a Japanese manufacturer of specialty chemicals, polymers and agrichemicals. Corporate affairs Kureha Chemical Industries is a member of the Mizuho keiretsu. Products Polyglycolic acid One of the company's long-term investments is in polyglycolic acid (PGA). The company developed a mass scale manufacturing technique for the chemical, which has been a development project of the company since the early 90s. The company has stated a strategy of committing to invest in PGA for a long period, patiently waiting for market demand to develop. To manufacture PGA, the company invested 100 million in a manufacturing facility in Belle, West Virginia to be located nearby a Dupont plant that produces glycolic acid, a primary feedstock for PGA. Polyphenylene sulfide Kureha is the world's largest producer of polyphenylene sulfide, a heat-resistant polymer is used in industrial applications such as automotive electronics. The polymer its produced at the company's site in Iwaki, Japan and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Solvay S
Solvay may refer to: Companies and organizations * Solvay Brussels School of Economics and Management, Brussels, Belgium * Solvay Institute of Sociology, Brussels, Belgium, part of the Université Libre de Bruxelles * Solvay Process Company (1880–1985), a former U.S. company that employed the Solvay process * Solvay S.A., an international chemicals and plastics company founded by Ernest Solvay Places * Solvay, New York, a village in New York, United States * Mount Solvay, part of Belgica Mountains in Queen Maud Land, Antarctica * Solvay Mountains, Brabant Island, off the coast of Antarctica Buildings * Solvay Castle, La Hulpe, Belgium * Hôtel Solvay, a town house in Brussels, Belgium * Solvay Hut, a mountain hut on the Matterhorn, Switzerland People * Ernest Solvay (1838–1922), Belgian chemist, inventor of the Solvay process * Lucien Solvay (1851–1950), Belgian journalist, art historian, and poet * Paolo Solvay, pseudonym of Luigi Batzella (1924–2008), Italia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lumena
China Lumena New Materials (commonly called Lumena) is a Chinese mining and manufacturing company primarily engaged in the production of polyphenylene sulfide (PPS), an industrial plastic. According to a market research report in 2016, the company is among the largest producers of PPS. Lumena mines the glauberite and associated class of minerals that is the raw ingredient used by the company to manufacture PPS and thenardite products including laxatives. History The company traces its origins to 1952. In June 2009, the company raised US$149 million in an IPO on the Hong Kong Stock Exchange. Although the company had planned to launch an IPO in 2008, the Sichuan earthquake that year delayed the plans. The Hong Kong listed company was suspended from trading by the exchange after Glaucus, a short seller investment research firm, published a report that alleged sales stated by the company were fraudulently inflated and its claim to have the most production capacity volume was misle ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
High-performance Plastics
High-performance plastics are plastics that meet higher requirements than ''standard'' (Commodity plastics, commodity) or ''Engineering plastic, engineering'' plastics. They are more expensive and used in smaller amounts. Definition High performance plastics differ from standard plastics and engineering plastics primarily by their Thermostability, temperature stability, but also by their chemical resistance and mechanical properties, production quantity, and price. There are many synonyms for the term high-performance plastics, such as: high temperature plastics, high-performance polymers, high performance thermoplastics or high-tech plastics. The name high temperature plastics is in use due to their continuous service temperature (CST), which is always higher than 150 °C by definition (although this is not their only feature, as it can be seen above). The term "polymers" is often used instead of "plastics" because both terms are used as synonyms in the field of engineer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Engineering Plastic
Engineering plastics are a group of plastic materials that have better mechanical or thermal properties than the more widely used commodity plastics (such as polystyrene, polyvinyl chloride, polypropylene and polyethylene). Engineering plastics are more expensive than standard plastics, therefore they are produced in lower quantities and tend to be used for smaller objects or low-volume applications (such as mechanical parts), rather than for bulk and high-volume ends (like containers and packaging). Engineering plastics have a higher heat resistance than standard plastics and are continuously usable at temperatures up to about . The term usually refers to thermoplastic materials rather than thermosetting ones. Examples of engineering plastics include polyamides (PA, nylons), used for skis and ski boots; polycarbonates (PC), used in motorcycle helmets and optical discs; and poly(methyl methacrylate) (PMMA, major brand names acrylic glass and plexiglass), used e.g. for taillight ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dopant
A dopant (also called a doping agent) is a small amount of a substance added to a material to alter its physical properties, such as electrical or optics, optical properties. The amount of dopant is typically very low compared to the material being doped. When doped into crystalline substances, the dopant's atoms get incorporated into the crystal lattice of the substance. The crystalline materials are frequently either crystals of a semiconductor such as silicon and germanium for use in solid-state electronics, or transparency and translucency, transparent crystals for use in the production of various laser types; however, in some cases of the latter, noncrystalline substances such as glass can also be doped with impurities. In solid-state electronics using the proper types and amounts of dopants in semiconductors is what produces the p-type semiconductors and n-type semiconductors that are essential for making transistors and diodes. Transparent crystals Lasing media The p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oxidation
Redox ( , , reduction–oxidation or oxidation–reduction) is a type of chemical reaction in which the oxidation states of the reactants change. Oxidation is the loss of electrons or an increase in the oxidation state, while reduction is the gain of electrons or a decrease in the oxidation state. The oxidation and reduction processes occur simultaneously in the chemical reaction. There are two classes of redox reactions: * Electron-transfer – Only one (usually) electron flows from the atom, ion, or molecule being oxidized to the atom, ion, or molecule that is reduced. This type of redox reaction is often discussed in terms of redox couples and electrode potentials. * Atom transfer – An atom transfers from one substrate to another. For example, in the rusting of iron, the oxidation state of iron atoms increases as the iron converts to an oxide, and simultaneously, the oxidation state of oxygen decreases as it accepts electrons released by the iron. Although oxidati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
