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

Determine the value of shunt connected capacitance, An electric heating ele...

An electric heating element is rated at 4.0kW when connected to a single phase 240Vrms, 50 Hz AC supply, and is known to have a power factor of 0.833 lagging. 1. Calculate the c

Workshop disciplines for general safety, WORKSHOP DISCIPLINES Followin...

WORKSHOP DISCIPLINES Following discipline tips should be made a part of life to become a good technician. These will certainly help in creating safe, friendly and clean enviro

Carnot cycle, what is mimnimum data for modelling a unique carnot cycle

what is mimnimum data for modelling a unique carnot cycle

Project, project on solid work 2012 The Final Project is to design a mechan...

project on solid work 2012 The Final Project is to design a mechanical assembly in Solidworks. The design must consist of a minimum of 60 parts, 30 of which must be unique. A uniqu

project on machine design , can you help me to do my project on machine d...

can you help me to do my project on machine design,it is specific project with calculation and some draw.

Determine the bending stress, The cantilevered beam made from the Z section...

The cantilevered beam made from the Z section is subjected to the two loadings as shown. (a)  Determine and show the orientation of the neutral axis on the cross section (angle

control valve, How to design pressure control valve drill plug? How to sel...

How to design pressure control valve drill plug? How to select stroke and hole diameter and quantity?

Expression for the maximum shearing stress, Expression for the maximum shea...

Expression for the maximum shearing stress: Obtain expression for the maximum shearing stress and maximum shearing planes. Sol.: The condition for maximum shearing stress i

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