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An elastomer is a polymeric substance obtained after vulcanization of rubber. Vulcanization is the process of improving the properties of rubber by heating with sulphur. A normal rubber is not useable as it becomes brittle at low temperature and sticky at high temperature. Charles Goodyear had been trying to 'cure' the rubber so that it could be used in all seasons. He tried to mix all kinds of things such as ink, black pepper, cheese and what not. But he couldn't succeed until he dropped a piece of rubber on stove accidentally.
To his surprise, he found that instead of melting the rubber piece hardened and remained pliable. It was found in the lab that it contained traces of sulphur. Goodyear perfected the process and named it 'vulcanization' after the Roman God of fire, 'Vulcan'.
NaCl->AgNO3
Question In linking fenders to pier organizations, would single lock nuts or double lock nuts be used? Answer In pier structures connection offenders to piers is a
Uses of Cement Cement is utilized widely for the construction of several structures. Some of them are listed below: (i) Cement slurry is utilized for filling cracks in concr
state and prove Heisenberg uncertainity principle?
Good evening sir, solid block''s design mix calculated generally please explain and derive .
laws of solid friction?
Define the Phreatic Line and Phreatic Zone Phreatic Line: In an unconfined aquifer, it represents the water table. Phreatic Zone: In an unconfined aquifer, it is located b
High-yield steel vs. mild steel as road reinforcement High yield steel is the preferred material for the reinforcement of concrete carriageway due to the subsequent reasons:
Question If construction of concrete carriageway is carried out in summer, be capable of expansion joints be omitted? Answer If construction of concrete carriageway
thesis literature review chapter
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