Hydrogen materials

The hydrogenated materials have a higher maximum service temperature than the conventional SBS materials and, because of the absence of double bonds in the chain, better weathering properties. Known as SEBs these materials now find use in adhesives, sealants and roofing membrane compounds. These also find use in highly filled automotive acoustic barriers and in medical, sports and leisure applications. 

Neutralization of zinc acceptors in InP by hydrogen occurs also in nonintentionally hydrogenated materials grown by organometallic vapor phase epitaxy (Antell et al., 1988 Cole et al., 1988). Levels of hydrogen comparable to the zinc concentration have been detected by SIMS experi ... 

Another source of overlapping tracks are the knock-on protons produced during fast neutron irradiation of a hydrogenous material. 

Bigeleisen J, Perlman ML, Prosser HC (1952) Conversion of hydrogenic materials for isotopic analysis. Anal Chem 24 1356... 

When highly aromatic fractions are hydrogenated prolonged heating of the completely hydrogenated material in the presence of nickel catalyst and high pressure... 

The thermal stability of the hydrogenated materials was estimated by measurements of gas thermodesorption. A piece of the sample cooled to liquid nitrogen under pressure was placed, in a liquid nitrogen bath, into a non-hermetic copper container, and the latter was moved into a quartz ampoule externally cooled with liquid nitrogen. The ampoule was connected to a vacuum system with the calibrated volume, the system was evacuated to 10-6 MPa, and then the ampoule was heated at a rate of 20 K/min. The pressure P of a gas evolved upon heating to 650°C was registered manually the sample was weighed after measurements. We call these dependences as a manometric curves . 

Mass addition to reactor (hydrogenous material) Damage of SSC Reactivity spike due to neutron thermalisation Chemical attack of TRISO layers and graphite... 

---