Alternatives in Toughening: Presented at a meeting of the Thermoset Resin formulators association in Chicago, IL Tuesday, September 16, 2008

The impact of terminal and polymer backbone functionality on toughener effectiveness from the standpoint of glass transition temperature, and adhesive and structural properties were examined. Internal functionality included polybutadiene, polybutadiene/acrylonitrile, polyether, polyester and polyacrylate.  Terminal functionality included Bis-A epoxy adducts, glycidyl esters and ethers, carboxylates and alcohols.  Data shows that both internal and terminal functionalities have a dramatic affect on all properties tested. Glycidated materials gave the overall better performance.


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