Technical Paper Archive


This site contains all papers presented at Rubber Division, ACS Technical Meetings from 2000-2018. Meetings prior to 2000 are incomplete and papers are added as they are digitized.


For older papers not listed here, please send your request, including Meeting Year, Title, Author, and Paper # to: cbrady@rubber.org


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AEM Polymer for Seals and Gaskets with Low Oil Swell and Improved Processing

87

Event: 182nd Technical Meeting
Location: Cincinnati, OH
Date: October 09, 2012
Author: Edward McBride* Theresa Dobel
Paper Number: 87

Price: $20.00

  • An AEM polymer - VMX 3110 from DuPont - has been developed for the seal and gasket market. Compounds made from this polymer have shown improved processing in both injection and compression molding equipment when compared to conventional AEM polymers. They exhibit improved hot tear and less mold fouling. Compounds using this polymer can be formulated to have a combination of low oil swell, low
    compression set and good low temperature properties. The compounds have less than 10% volume swell in many commercially available automatic transmission fluids and engine oils. Typical values for volume swell in IRM 903 oil range from 20 to 30%.

    Fluid aging studies were also done where the physicals after aging were measured at elevated temperatures that are typical of what a seal or gasket will see in the end use application. The fluid aged compounds had good physical properties both at room temperature and at elevated temperatures.

    This polymer has a cure site monomer that allows for the use of a diamine cure system. Compounds based on it can be designed to have good compression set properties and good cure speeds without using DOTG.

    Papers from 182nd Technical Meeting

    Items from 182nd Technical Meeting