two properties of bakelite

NB Your answers may be given in either order. Moreover, it could be molded very quickly, an enormous advantage in mass production processes where many identical units were produced one after the other. If you wanted to make bracelets, for example, you'd extrude a long tube with the rough shape (Fig. PHENOLIC BAKELITE PAPER SHEET HP2061 ... HP 2061 has excellent strength, weatherability and elec-trical resistance properties. Bakelite is a condensation polymer that requires two monomers - phenol and formaldehyde. Clever collectors have named yellow transparent Bakelite "apple juice." Key Difference – Bakelite vs Plastic Plastic and Bakelite are both organic polymers, having a very large molecular weight though there exists a difference between the two based on their properties and usage. 2 See answers 17122006 17122006 Uses of Bakelite 1)It was used for its non-conductive and heat-resistant properties in electrical insulators, and also in radios and telephones. Bakelite made perhaps its largest stamp on the world of fashion. There are two type of materials used along with synthetic resin (bonding agent) to enhance the properties of Bakelite sheets (Phenolic Laminates) i.e. A the function which the object would serve. Properties and Uses of Bakelite. 2)It was also used in other diverse products such as jewellery, kitchenware, and toys. Typical applications include insulation of electrical and mechanical parts and structu-ral components. Bakelite jewelry became immensely popular in the 1920s as an affordable and attractive replacement for other materials. Properties and Synthesis. Bakelite's unique properties lent itself to extrusion casting. Bakelite is the first synthetic plastic and is known as a “material of thousand uses” due to its versatile applications. Sometimes you will find a piece of red transparent Bakelite nicknamed "cherry juice" as well. The principal characteristic of these materials is the wide range of colours possible, including many intense bright colours. Bakelite was very rarely molded into individual pieces of finished jewelry. Some of the principal physical properties of mouldings from these materials are given in Table 24.1. Phenolic resins (Phenoplasts) are synthetic thermosetting resins invented by Dr. Leo Baekeland in 1907. Bakelite resin is a phenol formaldehyde resin formed by condensation reaction of phenol or substituted phenol with formaldehyde. B the ease with which the resin could fill the mould Write any two uses of Bakelite. ~ Properties of Bakelite Bakelite is a non-conductive and heat resistant material makes it ideal for electrical insulators. Classification of Bakelite Sheets is based on the type of material used along with bonding agent to improve the properties of Bakelite laminated Sheets. Yes, Bakelite jewelry can be transparent in color, too. There are several variables in the method of polymerization, depending on the properties desired. Moulding powders based on melamine–phenol–formaldehyde resins were introduced by Bakelite Ltd, in the early 1960s. 4) preformed. These colors vary, like with the solid color pieces shown above, but are most often found in yellow, green, and red. Which TWO of the following factors influencing the design of Bakelite objects are mentioned in the text? The great majority of Bakelite jewelry was made by hand from stock shapes of raw material. ~ Uses of Bakelite It was used for its non-conductive and heat-resistant properties in electrical insulators, and also in radios and telephones. It came in several colors, including translucent and marbled shades by the 1950s. Choose TWO letters A-E. Write your answers in boxes 9-10 on your answer sheet. Bakelite can be molded, and in this regard was better than celluloid and also less expensive to make. The material is often called Bakelite. 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