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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.
Explain Feed - Cutting Parameters 1. In cylindrical grinding feed is the longitude movement of the work piece per revolution. f=Feed in mm per work piece revolut
a) Three pipes of lengths 800m, 400m, 500m and of diameter 500mm, 400mm and 300mm respectively are connected in series. Pipes are to be removed by a single pipe of length 1700m. Ca
explain the CAM system
Plastic Materials/Polymers processing methods. Under this category are included the various methods for processing plastic material/polymers for example, shape casting, the
Grinding & Brushing: Grinding is process there has an abrasive wheel that rotating at certain speed to smooth a surface or to give an even finish on material. In this Blade pr
Shear stress distribution diagram for T section
Determine the centroid of the truss Gusset Plate shown in figure below.
Bhasker operates a retail shop and sells the high priced "Hot Food" thermoware. Each unit I priced at Rs.250. Experience has shown that the weekly demand schedule for items is as f
Design or Selecting a car heat exchanger.
What is Shallow foundation Shallow foundations are those where the depth D
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