New Phosphonate-Based Additives for Fortification in Model Epoxies

作者：Kins Christoph F; Brunklaus Gunther; Spiess Hans Wolfgang^*

来源：Macromolecules, 2013, 46(6): 2067-2077.

DOI：10.1021/ma400093w

The bulk properties of polymers are often adjusted via addition of a complex blend of compounds collectively known as additives, where so-called molecular fortifiers (or antiplasticizers) may improve the mechanical properties. On the basis of our previous work, we have further explored the potential of reactive phosphonate based additives for enhancement of mechanical and thermal properties of an amine-cured model epoxy resin. In particular, successful fortification based on %26quot;ionic bond%26quot; formation was achieved for a series of novel custom-made compounds with systematic variation of side groups. Both cure temperature and chemical structure of the fortifier have significant impact on the epoxy%26apos;s properties as well as aging behavior. Long-term storage of the epoxies resulted in partial loss of initially achieved fortification. Bifunctional fortifiers revealed particularly robust and much superior performance compared to the previously recommended fortifier dimethyl methylphosphonate (DMMP), rendering them most promising for potential application.

• 出版日期2013-3-26