SpletBakelite are the thermo-setting plastics formed by the condensation and polymerization of formaldehyde and carbolic acid (Phenol). Its uses are: - It is used to make the handles of … SpletLa bakélite est une résine polymère phénol-formaldéhyde, dont la définition exacte et chimique est celle d'un hydroxyde de polyoxybenzyléthylène glycol. L'émergence et la commercialisation de ce matériau ont marqué l'aube de l'ère du plastique; occupé et faisait partie d'innombrables objets ménagers, cosmétiques, électriques et même militaires
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SpletExample : Bakelite, melamine formaldehyde etc. Note: Plasticizers do lower the softening point (so called melting point) of a polymer. A plasticizer cannot convert a thermosetting polymer into thermoplastic one. In fact plasticizers can convert a hard and brittle plastic into soft and easily pliable. Splet13. apr. 2024 · Bakelite plastic was a revolutionary invention that changed the manufacturing and design world. Its ability to be molded into various shapes and resist … trailer for 33 foot boat
10.5: Condensation Polymers - Chemistry LibreTexts
Splet01. dec. 2024 · A set of colorful Bakelite buttons. Science History Institute/Gregory Tobias. A polymeric plastic made from phenol and formaldehyde, Bakelite was one of the earliest synthetic materials to transform the material basis of modern life. It was named for its inventor, Leo Hendrik Baekeland (1863–1944), who discovered the durable plastic in 1907. Some important properties of bakelite are listed below. 1. It can be quickly molded. 2. Very smooth molding can be obtained from this polymer. 3. Bakelite moldings are heat-resistant and scratch-resistant. 4. They are also resistant to several destructive solvents. 5. Owing to its low electrical conductivity, bakelite is … Prikaži več We cannot deny the presence of polymers in our lives. We are surrounded by objects, most of which in some way or the other have a polymer associated with them. The ease of molding polymers into different shapes and their … Prikaži več When the phenol is taken in excess and the reaction medium is made acidic, the product of the condensationreaction obtained is acidic. Whereas, when the quantity of … Prikaži več Now coming to the uses of Bakelite, since this element has a low electrical conductivity and high heat resistance it can be used in manufacturing electrical switches and … Prikaži več The cross-linked product of phenol and formaldehyde has the following structure. The chemical formula of bakelite can be written as (C6H6O-CH2OH)n. Prikaži več the school harry potter goes to