Polivinil alkol üretim sürecine kısa bir giriş
The production of polyvinyl alcohol is divided into three ways according to the different raw materials: one is petroleum → ethylene → vinyl acetate → polyvinyl alcohol; the second is natural gas → acetylene → vinyl acetate → polyvinyl alcohol; the third is calcium carbide → acetylene → vinyl acetate → Polyvinyl alcohol. In recent […]
PVA'nın kökeni ve gelişimi
Polyvinyl alcohol was first developed by German chemists W.0. Herrmann and W.W. Hachnel in 1924, because it can carry out typical polyol chemical reactions and pass. Insoluble treatment makes it denatured and has different functional effects, resulting in a series of synthesisMaterials are widely used in industrial and agricultural production and medical applications. Polyvinyl alcohol in 1926. Industrial production is […]
Hidroksipropil metil selüloz kullanım alanları
Used as thickener, dispersant, binder, exciphant, oil resistant coating, filler, emulsifier and stabilizer in textile industry. Also widely used in synthetic resin, petrochemical, ceramic, paper, leather, medicine, food and cosmetics and other industries. The main purpose 1, construction industry: as cement mortar water retention agent, retarder mortar with pumping. In plastering, gypsum, putty powder or other building […]
PVA'nın tıbbi uygulamaları
PVA hidrojel, su içeriği, elastik modül, düşük sürtünme katsayısı, yüksek mekanik mukavemet, zengin gözenek sızıntı ağı yapısı ve insan vücudunun doğal dokularına benzer iyi biyouyumluluk özelliklerine sahiptir. Geniş uygulama yelpazesi. Yapay kıkırdak, yapay kornea, yapay vitreus vb. üretmek için kullanılabilir. Polivinil alkol hidrojel yaygın olarak [...]
Göz damlalarında polivinil alkol uygulaması
Due to the development of science and technology, people are surrounded by electronic products all day long. People who often use these electronic products can easily cause eye discomfort and other symptoms. At this time, polyvinyl alcohol eye drops come in handy. Polyvinyl alcohol eye drops are colorless, slightly viscous and clear liquids. They can […]
Kaplamalarda PVA kullanımı
Polyvinyl alcohol also has good uses in coatings. The polyvinyl alcohol aqueous solution is condensed with formaldehyde under the catalysis of hydrochloric acid to form a water-resistant polyvinyl formal polymer compound, which is widely used as interior and exterior wall coatings, whitewashing, and caulking of buildings. Polyvinyl alcohol paint has good weather resistance, water resistance, […]
Biyolojik olarak parçalanabilen yeni ambalaj malzemeleri
In recent years, the development of new biodegradable packaging materials has received extensive attention. Renewable natural polymers have been used to evaluate the biodegradability of end-use products based on polyvinyl alcohol. Polyvinyl alcohol materials are widely used in biodegradable synthetic polymers due to their biodegradability under various microbial conditions. Polyvinyl alcohol is used in a […]
Polivinil alkolün gelişme beklentileri
Polyvinyl alcohol (PVA) is a high-molecular polymer, made from vinyl acetate (VAC) through polymerization and alcoholysis. It has good adhesion, film-forming properties, oil resistance, and colloidal protection. Pollution-free and degradable characteristics rarely seen in polymer materials. Compared with other chemical products, PVA and its derivative products have a very broad development space, and new uses […]
Çin, salgının ardından 130. Kanton Fuarı'nın açılışını yaptı
The opening ceremony of the 130th Canton Fair and Pearl River International Trade Forum was held in Guangzhou. This Canton Fair is a landmark international trade event held in a special international environment. Control and economic and social development have achieved strategic results. This year’s Canton Fair continues to set up 51 exhibition areas based […]
Polivinil Alkol performans tanıtımı
1. Polyvinyl Alcohol has good mechanical properties, high strength, high modulus and low elongation. 2. Strong acid and alkali resistance and chemical resistance. 3. Light resistance: under long-term sunlight, the loss rate of fiber strength is low. 4. Corrosion resistance: The fiber will not be moldy, rot, or moth-eaten when buried in the ground for a long […]
