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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.
What is fluid mechanics? what are cohesive and adhesive forces?
what is resultant of coplanar non concurrent forces
A car travels at a constant speed around a circular track whose radius is 2.2 km. The car goes once around the track in 400 s. What is the magnitude of the centripetal acceleration
Strength tests : These tests are carried out to check the holding powers of various binders used in green moulding sand, dry moulding sand and core sand. These tests are performed
Design a Balasa wood truss car design
(a) Calculate the natural frequency of mass m = 1 Kg placed at one end of a cantilever beam of negligible mass. Length of cantilever = 500 mm, d = 30 mm, b = 20 mm, E = 210x10 9 N
Stainless Steels Such are particularly termed for their resistance to corrosion. This resistance is acquired due to formation of protective oxide layer that spreads all over
Primitive Instancing In primitive instancing, the modeling system defines a set of primitive 3D solid shapes that are relevant to the application area. Primitive instances are
what is work?
Horizontal Curves - Railways In railway engineering, the horizontal curve is defined by its degree as well as by its radius. The degree is the angle subtended at the centre
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