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1 reply from 1 author in the "Tech Talk" community ... At one of my previous jobs at a prominent compounder I worked on formulations of styrenic TPEs for many different end use applications. I found a...
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Sep 4, 2016
started yesterday, Amitkumar Dharia (1 reply)
Oil retentin of SBCS   external link to thread view
1.  At one of my previous jobs at a prominent... Ashok Adur


 
1. Re: Oil retentin of SBCS
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Ashok Adur
Sep 4, 2016 2:33 PM
Ashok Adur

At one of my previous jobs at a prominent compounder I worked on formulations of styrenic TPEs for many different end use applications. I found a similar lack of data on oil absorption, partly because there are many different types of oils used for such purposes. The selection of oils is dependent on the application. Higher cost saturated hydrocarbon oils are used for applications which need thermal and/or UV protection while lower cost hydrocarbon oils are used for those which don't. Similarly, higher molecular weight oils are used to minimize the leaching you describe at higher temperature and/or pressure. Some manufacturers of such elastomers like Kraton had data with some of the oils, but it is too much work to generate data with so many different oils. So typically as part of TPE formulation work, such data is generated by compounders and not widely available.

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Ashok Adur, Ph.D.
Global Commercial Development Director,
Vertellus Specialties Inc.
Parsippany, NJ 07054, USA
aadur@vertellus.com
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Original Message:
Sent: 09-03-2016 09:48
From: Amitkumar Dharia
Subject: Oil retentin of SBCS

Oil retention of SBCs:

Many soft SBCs compounds are highly extended by oil, some times as much as 400 phr.  Even though SBC can abosrb large amount of oil, oil can migrate out under parts own weight, at higher temperatures or under slight pressure.

I am looking data comparing oil retention capability for SBS, SEBS, SEEPS, and SEPS as function of % Styrene.  It will aslo help to have hardness vs. % oil.  I did not find such data on supplier's web sites and white papers.  There are some references in literature and patents but they all are for SBC compounded with some thermoplastics. 

Just provide a link or ref. and I will get the full text.

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Amit Dharia
Transmit Technology Group, LLC.
Irving, TX.
[972-915-0516
ttg@transmit-technology.com
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