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

Calculate ratio of air to methanol , A mixture of air and methanol vapour i...

A mixture of air and methanol vapour is fed to a converter in which the following reactions take place: CH OH O HCHO H O 3 2 2 2 1 + ® + 3 2 CH OH ® HCHO + H In addit

Explain about the defect breakdown, Explain about the Defect breakdown ...

Explain about the Defect breakdown It is because of cracks and pores at the surface. Moisture from atmosphere can collect on the surface and result in breakdown. Glazing is

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

Anesthetics - drugs and medicines, Anesthetics: It may be described as ...

Anesthetics: It may be described as those drugs that generate insensibility to the major functions of all types of cell particularly of nervous system. Anesthetics may be categ

The magnetic quantum number for valency electrons of sodium, The magnetic q...

The magnetic quantum number for valency electrons of sodium is: (1) 3        (2) 2         (3) 1       (4) 0 Ans: 0

Anionic detergent - types of detergent, Anionic Detergent - Types of Deterg...

Anionic Detergent - Types of Detergent Long chain alcohols are utilized in the manufacture of few of the synthetic anionic detergents. The comprehensive chain alcohols are trea

Entropy generation for the process, Two kg Ammonia (mA) at  P A = 300  kPa...

Two kg Ammonia (mA) at  P A = 300  kPa and T A = -10ºC and 1 kg Ammonia (m B ) at P B = 300 kPa and T B = 100ºC  are mixed in a constant pressure and adiabatic process. Find th

Acid halides, what are the properties of acid halides

what are the properties of acid halides

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