Video Exclusives


Careers in the tire industry

Sentury

Michelin US invites members of the public to consider a career at the company, with opportunities in R&D, IT, product design, engineering, manufacturing and business management

Click here to watch the video


Cooper Tire completes guayule grant

Sentury

Following the project's huge success, economic scale and efficiencies will be necessary in the growth of guayule for it to be competitive with hevea in the market

Click here to watch the video

When do you think such materials will be introduced into a mass production tire?

Web Exclusive Articles

« back to listing

Conference Q&A: Shabnam Ezzoddin, Barez Industrial Group

A study at Barez Industrial Group has looked at the effect of oil on the processing behavior of halobutyl rubber. Foresight researcher Shabnam Ezzoddin explains more

May 12, 2016

 

Please tell us about the study upon which your presentation at Tire Technology Expo 2016 was based.
As a foresight researcher at Barez Industrial Group, Tehran, Iran, I conduct development projects to improve products in the raw materials field. This particular study was a cooperative study in partnership with the Science and Research Branch Islamic Azad University (SRBIAU) University.

It is widely known that the rheological behavior of rubbers is of great importance regarding their affect on rubber processing. In this study, entitled Rheological behavior of butyl rubber and the effect of process oil on its rheology, we analyzed the effect of different amounts of oil on the processing behavior of rubber in a wide range of shear rates similar to shear rate ranges of real rubber processes

What were your findings?
First of all, we found that butyl rubber obeys the power law. The power law predicts that the effective viscosity would decrease with increasing shear rate indefinitely, requiring a fluid with infinite viscosity at rest and zero viscosity as the shear rate approaches infinity.

We found that enhancing the amount of process oil in the rubber matrix increases the slip velocity particularly in dies of large lengths, which would not be a desired result in certain cases. We also found that processing behavior might be affected by process temperature. In this case, we found that the effect of temperature on slip velocity seems to be related to shear rates as well; for instance, at lower shear rates, when temperature increases, slip velocity decreases, while a reverse result would be obtained at higher temperatures.

What is the next step in this research?
Next we aim to study oil-rubber compatibility and the effect of the aforementioned parameter on rubber processing behavior and other rubber properties.

May 12, 2016

 

Read Latest Issue

Read Latest Issue

Read Latest Issue

Web Exclusives

The importance of the right tires
Goodyear reveals more behind the development process for original equipment tires – with around 400 tests conducted in the lab and 200 test drives undertaken on roads during each project
Read Now

BFGoodrich creates bespoke Dakar tire
The All-Terrain T/A KDR2+ was refined at locations worldwide including Morocco, the USA, South America, China, Russia and Hungary
Read Now

Tire damage alarm
Alan Bennetts, owner at Bay Systems, investigates tire failure mechanisms using exterior temperature sensing
Read Now

Conference Q&A: Ed Terrill, Akron Rubber Development Laboratory
The applied research fellow reveals more on the company’s research into the chemical structure of crosslinks formed during tire aging
Read Now

Seasonal highlights
An ambitious expansion of the Test World facility in Finland will increase the capacity for testing on natural snow and ice with three additional indoor areas
Read Now


Supplier Spotlight

Supplier SpotlightWe are building a list of leading suppliers covering all aspects of the tire industry. Want to see your company included? Contact olivia.campbell@ukimediaevents.com for more details.

فروشگاه اینترنتی فروشگاه اینترنتی سیستم همکاری در فروش کانال تلگرام چت روم دانلود فیلم فروشگظ;ه اینترنتی

Submit your industry opinion

Industry BlogDo you have an opinion you'd like to share with the tire technology community? We'd like to hear your views and opinions on the leading issues shaping the industry. Share your comments by sending up to 500 words to rachel.evans@ukimediaevents.com

Submit Your Recruitment Ad

Recruitment AdTo send us your recruitment advertising or to receive information on placing a banner please email olivia.campbell@ukimediaevents.com