Chapter 22-4PlasticEngineering
Chapter 2 2-4 Engineering Plastic
Engineering Plastics High Strength Good Toughness Good Thermo propertiesExamples of Engineering Plastics:·PC·PAPA6 PA66·ABS·POM
Engineering Plastics • High Strength • Good Toughness • Good Thermo properties Examples of Engineering Plastics: • PA PA6 PA66 • PC • ABS • POM
Nylons(Polyamides)HnHThenameNylonwasgivenbytheDuPontCompanyofAmericatotheirfirst syntheticcondensation polymer formed by the reaction ofdifunctional acids with difunctional amines.Hence Nylons are also called polyamides. It hadbeen made as part of the fundamental programof W. H. Carothers to investigate the whole topicofpolymerization
Nylons (Polyamides) The name Nylon was given by the Du Pont Company of America to their first synthetic condensation polymer formed by the reaction of difunctional acids with difunctional amines. Hence Nylons are also called polyamides. It had been made as part of the fundamental program of W. H. Carothers to investigate the whole topic of polymerization
Carothers
Carothers
Nylons are one of the most common polymersused as a fiber. Because of the characteristicamide groups in the backbone chain of Nylons,it is usually used to replace Protein fiber , suchas the silk. The very first nylon product was atoothbrush with nylon bristles. Nylon's first realsuccess came with its use in women's stockings,inabout 1940.O—CH2-CH-CH-CH2-C—NH—CH-CH2-CH-CH2-CH2-CH-NH+,amidegroup
Nylons are one of the most common polymers used as a fiber. Because of the characteristic amide groups in the backbone chain of Nylons, it is usually used to replace Protein fiber , such as the silk. The very first nylon product was a toothbrush with nylon bristles. Nylon's first real success came with its use in women's stockings, in about 1940