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

The progressive liberalization , The progressive liberalization of the nor...

The progressive liberalization of the norms for foreign investment and import of technology appear to have benefited the automobile sector with production of total vehicles increa

Determine moment of this normal force - rectangular beam, Determine moment ...

Determine moment of this normal force - rectangular beam: A rectangular beam contains a width of 100 mm and a depth of 200 mm. This is utilized as a simply supported beam & th

Strength of material and engineering mechanics, Di fferentiate between str...

Di fferentiate between strength of material and engineering mechanics Sol.: Three primary areas of mechanics of solids are statics, dynamics and the strength of materials.

Firing rate demand for steam generator, Q. Firing Rate Demand for Steam Gen...

Q. Firing Rate Demand for Steam Generator? The firing rate for each Steam Generator is proportional to the feedwater flowing into that Steam Generator. Thus, the sum of the pa

Laser surface treatment applications, LASER SURFACE TREATMENT APPLICATIONS ...

LASER SURFACE TREATMENT APPLICATIONS   The laser can be used to alter the surface structure of materials either with or without alloying additions as compared to alloying by

Thermodynamics, why there is heat is not completely converted into work in ...

why there is heat is not completely converted into work in ideal case?

When was pddi developed, When was PDDI developed The PDDI interface was...

When was PDDI developed The PDDI interface was developed in connection with the ICAM project which was funded by the Air Force in order to improve the manufacturing methods in

Slip-on flanges, Slip-On Flanges Slip-on flanges are limited to use und...

Slip-On Flanges Slip-on flanges are limited to use under the following conditions: ASME/ANSI B16.5 standard forged flanges for design pressures and coincident temperatures n

Angle of repose, Angle of Repose(α): It is the maximum angle of inclin...

Angle of Repose(α): It is the maximum angle of inclined plane on which body tends to move down the plane because of its own weight. Consider the equilibrium of body when body

How to calculate total hysteresis loss?, Q.  The area of the hysteresis lo...

Q.  The area of the hysteresis loop of a given magnetic material is 50cm 2 with the two axes scaled as 1cm = 20AT and 1cm = 50mWb, for 50Hz frequency find the total hysteresis

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