HP/HT Hot-Wet Thermomechanical Behavior of Fiber-Reinforced High-Temperature Polymer Composites

Aromatic tetra-glycidyl ether versus tetra-glycidyl amine epoxy networks: Influence of monomer structure and epoxide conversion

“…Polymer resins for hot zones are increasingly in demand as fibre reinforced plastics and new applications for composites continue to emerge in the aerospace and space industries, the automotive [1] and oil & gas industries [2]. Some examples include, near engine components in aircraft, structural components in supersonic aircraft and space vehicles, high pressure pipelines and deep well drilling for hydraulic fracturing.…”

“…Another notable development in novel high-Tg epoxy resin is the synthesis of the monomer bis (2,7 glycidyl ether naphthalenediol) methane (NNE), an epoxy resin with a dimeric naphthalene designed to achieve a rigid backbone in the main polymer chain and a very high crosslink density. Ogura and Takahashi showed that when homo-polymerised using an imidazole catalyst, NNE exhibited a Tg above 320°C [19] also suggesting that this was the highest Tg ever achieved by an epoxy resin.…”

In Situ Testing of Polymers Immersed in Aging Fluids at Elevated Temperature and Pressure

“…Compared to metallic engineering materials, polymer components offer ease of manufacture and selective resistance to a variety of chemicals (most notably corrosion resistance) while meeting specific stiffness and strength requirements. However, previous research has shown that properties of polymer materials can vary drastically between their original dry state and after aging in certain fluids [ 1 , 2 , 3 , 4 ]. Degradation mechanisms include plasticization, leaching, and chain scission.…”

“…This practice can generate misleading results, especially for materials for which fluid ingress is rapidly reversible, most notably at elevated temperatures. For example, Yuan and Goodson [ 3 ] reported a “moisture-induced reversible process” in epoxy specimens, i.e., significant losses in tensile strength were largely recovered after a drying process.…”