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213 Search Results

  1. From Simple Epoxy Adhesives to a Foundation in Materials Aging.

    Celina, Mathias; Celina, Mathias; Celina, Mathias; ...

    Abstract not provided.

  2. Increasing the Lifetime of Epoxy Components with Antioxidant Stabilizers

    Narcross, Hannah; Redline, Erica; Celina, Mathias; ...

    Epoxy thermoset resins are ubiquitous materials with extensive applications where they are used as encapsulants, composites, and adhesives/staking compounds used to secure sensitive components. Epoxy resins are inherently sensitive to thermo-oxidative aging, especially at elevated temperatures, which changes the bulk properties of the material and can lead to component failure for example by cracking due to embrittlement or by adhesion failure between the epoxy and filler material in a composite. This project investigated the effects of three commercial antioxidants (Irganox® 1010 (I-102), butylated hydroxytoluene (BHT), or Chisorb® 770 (HALS)) at two different loadings (2.5 and 5 wt%) on the mechanical and chemical aging of a model epoxy system (EPONTM 828 / Jeffamine® T-403) under ambient conditions, 65, 95, and 110 °C. Additionally, synthetic routes towards an antioxidant capable of being covalently bound to the resin so as to prevent leaching were explored with one such molecule being successfully synthesized and purified. One commercial antioxidant (Irganox® 1010) was found to reduce the degree of thermo-oxidatively induced damage in the system.

  3. Foam process models for polyurethane including blowing and curing kinetics.

    Rao, Rekha; Mondy, Lisa; Roberts, Christine; ...

    Abstract not provided.

  4. History of SNL Cable Research.

    Celina, Mathias

    Abstract not provided.

  5. H2O and O2 sorption and diffusion behavior in thermoset polymers with temperature.

    Celina, Mathias; Linde, Carl; Giron, Nicholas

    Abstract not provided.

  6. From Simple Epoxy Adhesives to a Foundation in Materials Aging.

    Celina, Mathias; Martinez, Estevan; Astorga, Dominik; ...

    Abstract not provided.

  7. Characterization of sorption and diffusion phenomena as a foundation for polymer degradation and reliability.

    Celina, Mathias; Linde, Carl; Giron, Nicholas

    Abstract not provided.

  8. Effect of Thermal‐Oxidative Aging on Mechanical Properties of Epoxy Thermosets.

    Gabaldon, Taylor; Kropka, Jamie; Wilson, Kelsey; ...

    Abstract not provided.

  9. Polymer degradation principles - characterization challenges for sorption and transport phenomena.

    Celina, Mathias; Linde, Carl; Giron, Nicholas

    Abstract not provided.

  10. Alternative Encapsulation Materials with Optimized Processing and Performance Features.

    Celina, Mathias; Martinez, Estevan; Campbell, Christopher

    Abstract not provided.

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