Vulcanization of rubber, Chemistry

Assignment Help:

Vulcanization: Vulcanization is very widely used in rubber technology to improve the properties such as low tensile strength, plastic nature, thickness etc. by adding some chemicals like sulphur, hydrogen sulphide, benzene chloride etc. it is done by heating of raw rubber with sulphur at 100: 140 degree centigrade temperature. The added sulphur combines chemically as the double bonds of different rubber springs. Sulphur can also bring about vulcanization without affecting the double bonds in the polymer molecule, by eliminating H2S. The rate of vulcanization of rubber is quite slow and also depends upon the types and quality of rubber used. But, by using certain organic compounds called accelerators, vulcanization reaction speed up.

 

 


Related Discussions:- Vulcanization of rubber

Explain the following, Lithium and beryllium markedly differ from other mem...

Lithium and beryllium markedly differ from other members of their respective groups? Read more: http://wiki.answers.com/Q/Lithium_and_beryllium_markedly_differ_from_other_members

Explain the post-harvest handling of fresh produce, Post-harvest handling o...

Post-harvest handling of fresh produce Fruits and vegetables because of their high moisture content are extremely susceptible to deteriorate, especially under tropical c

Deprotonation equilibria, 2. Oxalic acid is a diprotic acid with the follo...

2. Oxalic acid is a diprotic acid with the following deprotonation equilibria. A.  You have 150 ml of a solution of pure oxalic acid with an unknown concentration.

Statements is not true for ionic compoundss, Which of the following stateme...

Which of the following statements is not true for ionic compoundss: (1) High melting point (2) Least lattice energy (3)Least solubility in organic compounds (4) Solubl

Type of bonding exists, Which type of bonding exists in  Li 2 o   and CaF 2...

Which type of bonding exists in  Li 2 o   and CaF 2    respectively : (1) Ionic, ionic                                   (2) Ionic, covalent    (3) Covalent, ionic

Show the properties of diborane, Q. Show the Properties of diborane? Di...

Q. Show the Properties of diborane? Diborane is a colourless gas (b. p., 183K). It is rapidly decomposed by water with the formation of H 3 B0 3 and H 2 : B 2 H, + 6H 2 0 -

What are acceptance tests?, What are Acceptance Tests? Acceptance test...

What are Acceptance Tests? Acceptance tests are used to evaluate product acceptability or liking or to determine which of a series of products is the most acceptable or the mo

Solutions, how to determine the percentage of association or dissociation i...

how to determine the percentage of association or dissociation in a solution?

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