Differentiate thermoplastic & thermosetting plastic material, Electrical Engineering

Assignment Help:

Classify plastic materials into two categories describe their important properties and give two examples of each.

Plastic materials can be categorized in thermoplastic and thermosetting plastics.

Thermoplastic materials: The properties of such plastic materials do not change considerably when they are melted and after that cooled and solidify. They can be repeatedly dissolved or melted in various solvents. They are additional elastic, less brittle and do not lose elasticity while subjected to prolonged heating. They are less apt to age thermally. Again and again they can be remoulded in any shape after heating. Several of them possess extraordinary high insulating properties and they are water repellent. They are polymers of linear structure that is their molecules are elongated and are like thread. This, kind of structure is soluble, fusible, highly plastic, able of forming thin flexible threads as well as films. Illustrations are Polytetra Flouroethylene (P.T.F.E. or Teflon) and Polyvinyl Chloride (P.V.C.)

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:- Differentiate thermoplastic & thermosetting plastic material

Single Phase Induction Motor, How do I connect a Capacitor on the machine i...

How do I connect a Capacitor on the machine if it has a start mechanism

\, Refer to Figure 100. Assume MKS units. Given: R1= 4, R2=14, R3= 9, I4...

Refer to Figure 100. Assume MKS units. Given: R1= 4, R2=14, R3= 9, I4= 8, I5= 7. Determine: Ieq, Req, and V3.

Find an expression for the power absorbed by the load, Q. For the circuit o...

Q. For the circuit of Figure: (a) Find an expression for the power absorbed by the load as a function of RL. (b) Plot the power dissipated by the load as a function of the lo

Find out the output if resistance, Q. The input to the differentiator circu...

Q. The input to the differentiator circuit is a sinusoidal voltage of peak value 5mv and frequency 1kHZ. find out the output if R=100K and C=10^-6F Solution. The equation

Explain linear versus nonlinear control systems, Q. Explain Linear versus n...

Q. Explain Linear versus nonlinear control systems? Linear feedback control systems are idealized models that are conceived by the analyst for the sake of simplicity of analysi

What are the constructional features of dc machines, Q. What are the Constr...

Q. What are the Constructional Features of DC Machines? Adc generator ormotormay have asmany as four fieldwindings, depending on the type and size of the machine and the kind o

Chemistry, write a note on vulcanization

write a note on vulcanization

What do you mean by mantissa, Q. What do you mean by Mantissa? The man...

Q. What do you mean by Mantissa? The mantissa , as well known as the significand , represents the precision bits of the number. It is composed of an implied leading bit and t

How many types of buses are, There are three types of buses. Address bu...

There are three types of buses. Address bus: This is used to carry the Address to the memory to get either Instruction or Data. Data bus : This is used to take the Data from

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