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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.
in concept of continum what is the meaning of upper cure
(a) Show by use of Buckingham's Pi-Theorem that the velocity through an orifice is given by V = √2gH f D/H , M/ΡVH , σ/ΡV 2 H . Where H is the head causing flow, D is the diame
Question Suppose T 1 and T 2 are independent and identically distributed Exponential variables with common hazard λ. What is the density of T = T 1 + T 2 ? What is the E(T-1
The shaft, as given in Figure is driven by pulley B from an electric motor. Another belt drive from pulley A is operating a compressor. The belt tensions for pulley A are 1500 N an
Occupational Safety - Industrial Safety The bad and most debilitating experience related to work which a worker can have is a work-related accident or illness. Within the effe
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What are main important terms included in the footings? Term included in the footings: a. described different types of footings and the process of selecting each type, b.
what are the necessity of lubrication ?
What makes engine move?
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