Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Phenol group, radiation resistance

A substantial intramolecular protective effect by phenyl groups in polymers is shown by the low G values for Hz and crosslinking in polystyrene (substituent phenyl) and in polyarylene sulfones (backbone phenyl), as well as many other aromatic polymers. The relative radiation resistance of different aromatic groups in polymers has not been extensively studied, but appears to be similar, except that biphenyl provides increased protection. Studies on various poly(amino acid)s indicate that the phenol group is particularly radiation resistant. [Pg.5]

In general, plastics are superior to elastomers in radiation resistance but are inferior to metals and ceramics. The materials that will respond satisfactorily in the range of 1010 and 1011 erg per gram are glass and asbestos-filled phenolics, certain epoxies, polyurethane, polystyrene, mineral-filled polyesters, silicone, and furane. The next group of plastics in order of radiation resistance includes polyethylene, melamine, urea formaldehyde, unfilled phenolic, and silicone resins. Those materials that have poor radiation resistance include methyl methacrylate, unfilled polyesters, cellulosics, polyamides, and fluorocarbons. [Pg.31]


See other pages where Phenol group, radiation resistance is mentioned: [Pg.432]    [Pg.84]    [Pg.455]    [Pg.243]    [Pg.601]    [Pg.1951]    [Pg.391]    [Pg.337]    [Pg.83]    [Pg.163]    [Pg.182]    [Pg.410]    [Pg.133]    [Pg.193]    [Pg.910]    [Pg.19]    [Pg.80]    [Pg.910]    [Pg.34]    [Pg.194]    [Pg.2078]    [Pg.11]    [Pg.26]   
See also in sourсe #XX -- [ Pg.5 ]




SEARCH



Group phenolate

Phenol groups

Radiation resist

Radiation resistance

Radiation-resistant

Resistance group

© 2024 chempedia.info