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Q. What do you mean by Thermosetting plastics?
This plastic undergoes a number of chemical changes on heating and cure to infusible and practically insoluble articles. The chemical change is not reversible thermosetting plastics do not soften on reheating and can not be reworked. They rather become harder due to completion of any left-over polymerization reaction. Eventually, at high temperatures, the useful properties of the plastic get destroyed. This is called degradation. The commonest thermosetting plastics are: alkyds, epoxides, polyesters, phenolics and urea.
(i) Use the GOAL SEEK tool in MS EXCEL to solve the following equation and determine the TWO roots of this equation between 0 X 4 -8x 3 -x 2 -14x+21=0 (ii). Use the SOLVER t
The Euler-Poincare Formula The Euler-Poincaré formula describes the relationship of the number of vertices, the number of edges and the number of faces of a manifold. It has b
Power metallurgy is much faster production whereas holding closer sizes.
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work of combination die
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Evaluate the stream function at point (2, 3) for a two dimensional flow given by U = 5x 3 v = - 15x 2 y Evaluate the velocity potential function for a two dimension
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Blasting Abrasive: Sand had been use widely before new abrasive media invented. Today, manufacturer had more choices and better options in choosing blasting media for their ow
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