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

What are the capabilities of step, What are the capabilities of STEP In...

What are the capabilities of STEP Industry-Developed STEP Capabilities AP-203, Configuration Control for 3D Design of Mechanical Parts and Assemblies, provides a very robust

Plant layouts - layout design principles, Plant layouts shall provide for a...

Plant layouts shall provide for a maximum of safety and exposure protection from the spread of fire, with ease of operation and maintenance consistent with economical design. Requi

What is the function of a clutch in an automobile, (a) What is the function...

(a) What is the function of a clutch in an automobile? Illustrate the principle of friction clutches with the help of neat diagrams. (b) Discuss the working and construction of

How is aluminium conductor steel reinforced used, ACSR (Aluminium Conductor...

ACSR (Aluminium Conductor Steel Reinforced) are used as  (A)  over head transmission lines.  (B)  super conductors. (C)  fuse  (D)  underground cables.

V-block and clamp - angle projection drawing, A V-block clamp consists of 3...

A V-block clamp consists of 3 components, a V-block, yoke and clamping screw.  Using a rule, measure the sketches below and produce a 3rd angle projection drawing for each componen

Mircometer, How is a micrometer used?

How is a micrometer used?

Estimate the viscosity of this diluted , A diluted polymer solution with a ...

A diluted polymer solution with a density of 1130 kg/m3 was extruded through a capillary tube of 3.5 mm internal diameter and 1 m long. The following results were obtained at 25°C.

Age-hardening of aluminium alloys, Age-hardening of Aluminium Alloys I...

Age-hardening of Aluminium Alloys In specific alloys precipitation from a single phase may arise. The precipitate phase might be in form of determine sub-microscopic particles

What are the objectives of bearing capacity, What are the objectives of bea...

What are the objectives of bearing capacity? The objectives of bearing capacity: a. identify the possible modes of failure that a shallow foundation can undergo, b. under

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