Explain thermosetting plastic materials, Electrical Engineering

Assignment Help:

Explain Thermosetting Plastic Materials.

Thermosetting Plastic Materials: They undergo huge changes while subjected to high temperatures for rather sometimes. They are called as baked and no longer can melt or be dissolved. They are more brittle, less elastic and lose their elasticity while subjected to prolonged heating. Therefore they cannot be remoulded in various shapes once they are hardened and set. They are used, while insulation is to withstand high temperatures without losing or melting its shape and also mechanical strength. Thermosetting plastic substances are space-polymers and the molecules branch off in different directions throughout polymerisation. Such structure makes them extremely rigid, fusible, poorly soluble, and enable of forming elastic films and threads. Examples are Phenol formaldehyde (i.e. Bakelite), Epoxy resins.


Related Discussions:- Explain thermosetting plastic materials

Unit impulse response of a linear system, Q. The unit impulse response h(t)...

Q. The unit impulse response h(t) of a linear system is h(t) = 5e -t cos(2t - 30°). Determine H(s).

Determine the open-circuit output voltage, Q. Determine the open-circuit ou...

Q. Determine the open-circuit output voltage v o of the system shown in Figure as a function of the input voltage v i .

Find the cutoff frequency, Q. A rigid 50- coaxial transmission line has ai...

Q. A rigid 50- coaxial transmission line has air as dielectric. If the radius of the outer conductor is 1 cm, find the cutoff frequency

Transistor, describe the compensation technique for both Vbe and Icbo

describe the compensation technique for both Vbe and Icbo

Find current in bjt, Q. A BJT is biased by the method shown in Figure. If V...

Q. A BJT is biased by the method shown in Figure. If V BEQ = 0.7V, β = 100, V CEQ = 10 V, and I CQ = 5 mA, find I 1 , I 2 , and IEQ.

Types of meter test, Types of Meter Test A meter should pass the subse...

Types of Meter Test A meter should pass the subsequent two types of tests: Type Tests Routine Tests Meters are calibrated such in which the whole

D.c mootor, which principle is used in d.c motor

which principle is used in d.c motor

D flip flop - introduction to microprocessors, D Flip Flop As we have ...

D Flip Flop As we have seen  in the SR flip flop  when the inputs  S= R  are applied the forbidden or indeterminate state occurs.  This state can destabilize the SR file flop.

Input resistance of an ideal op amp, Q. The input resistance of an ideal op...

Q. The input resistance of an ideal op amp with no feedback is infinite. Investigate the input resistance of an op amp with a feedback resistance RF: (a) When there is no resist

CRT, Why are the operating voltages of a CRT arranged so that the deflectio...

Why are the operating voltages of a CRT arranged so that the deflection plates are nearly at ground potential?

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd