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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.
degrees of freedom of a planar mechanism
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Consider a simple single machine system. It consists of workpieces that enter the system, wait their turn to be processed on a single machine, and then depart the system. The workp
what is thermodynamics-low freezing temperature
What are the rules which must be kept in mind when designing castings? Some of the points which should be kept in mind during the process of cast designing are as follows: >
Q. How to define automatic float operated gauges? In recording type gauges, automatic float operated gauges are more common. The well for the float provides room for installati
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Determine the vertical de?ection in the beam along the centreline and state the maximum de?ection.
Q. Expected service life of a component in high temperature environment? The expected service life of a component in a high temperature environment is limited by either the mat
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