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 best possible angle to reduce aerodynamic drag, This is to de...

This is to determine the best possible angle to reduce aerodynamic drag. Mesh is to use tetrahedron of 0.5m wide.  I need the mesh generation and solver control on ansys 11.0. I al

Engine, maximum rpm at engine

maximum rpm at engine

Calculate the horizontal and vertical components, Calculate the Horizontal ...

Calculate the Horizontal and Vertical Components A jet aircraft pulls up into a vertical curve as shown in the figure. As it passes the position where Θ = 30°, its speed is 10

Iterature review, I have literature review and the title is "the effect of...

I have literature review and the title is "the effect of fluid cooling on the performance of building integrated photovoltaic thermal systems. Using some BIPVT prototypes measure

Furances, type of furances and disadvantage advantage

type of furances and disadvantage advantage

Find the required plastic moment of resistance, For the collapse loads indi...

For the collapse loads indicated in Figure Q3, find the required plastic moment of resistance (M p ). The frame members have varying plastic moments of resistance as indi

Kennedy’s theorem-klein’s construction, Kennedy’s Theorem: According to t...

Kennedy’s Theorem: According to this theorem the relative instantaneous centres on whichever three bodies that contain motion relative to each other are collinear. Higher Pa

Define the application of abrasive jet cutting machines, Define the Applica...

Define the Application of Abrasive Jet Cutting Machines Cleaning purpose. Cutting fine lines. Machining semiconductors. Drilling and cutting thin section of har

Evaluate the exit velocity, A perfect gas flows through a nozzle when it ex...

A perfect gas flows through a nozzle when it expends in a reversible adiabatic manner, the inlet conditions are 22 bar,, 500 o c, 38 m/s. At exit the pressure is 2 bar. Evaluate th

Automatic feature recogniton system, I have been tasked to design a web bas...

I have been tasked to design a web based automatic feature recognition system for a press brake bending machine, how do I go about It?

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