Thermosetting plastics, Mechanical Engineering

Assignment Help:

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.


Related Discussions:- Thermosetting plastics

Wrking cran, this is a problem for designing wrecking crane. there are 2 sc...

this is a problem for designing wrecking crane. there are 2 scenarios, one is when ball is held and one where its at maximum. i calculated the loads and now need to find the follow

Show seismic loads for ground supported equipment, Q. Show Seismic Loads Fo...

Q. Show Seismic Loads For Ground Supported Equipment? V = C s W is the governing equation for horizontal seismic base shear of ground supported equipment. C s  = 1.2A v S/(RT

Machine elements, instant center of direct contact slider

instant center of direct contact slider

Alloys for cutting tools, Alloys For Cutting Tools  Apart from tool st...

Alloys For Cutting Tools  Apart from tool steels illustrated in further unit, alloys that comprise wholly non-ferrous elements have been enhanced. Such alloys behave superior

Example of equilibrium of body on the rough inclined, Example of Equilibriu...

Example of Equilibrium of body on the rough inclined: Magnitude of minimum force ' p ' that is required to move the body up the plane. At the time when ' p ' is acted with the

Problems, Prlblems 1 & 3 can you provide accurate and clear solved out solu...

Prlblems 1 & 3 can you provide accurate and clear solved out solutions not done by computer either.

Determine the velocity in a moving frame of reference, Determine the veloci...

Determine the velocity in a Moving Frame of Reference: As illustrated in Figure, a ship A moves with a velocity v A = 40 km/hour whereas ship B moves with a velocity of v B

Define term transfer of stress to footing, Define term transfer of stress t...

Define term transfer of stress to footing. Transfer of Stress to Footing:  The column transfers the load to the top of the footing by bearing. The magnitude of the pressure

Process of corrosion in bfw tank, Q. Process of Corrosion in BFW Tank? ...

Q. Process of Corrosion in BFW Tank? The feed to the BFW Tank is hot and will be flashing when it enters the tank. The vapours will be corrosive when the tank is open to atmosp

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