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Handbook of Solvents - George Wypych - ChemTech - Ventech!

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328 Vasiliy V. Tereshatov, Valery Yu. Senichev<br />

Table 6.3.1. Network density values for tested elastomers (data obtained from the<br />

elasticity modulus <strong>of</strong> samples swollen in good solvents)<br />

Elastomer Trade mark Network density, (kmol/m 3 )×10 2<br />

Silicone rubber SCT 6.0<br />

Butyl rubber BR 8.9<br />

Polybutadiene rubber SCDL 40.5<br />

Ethylene-propylene rubber SCEPT 2.7<br />

Isoprene rubber SCI-NL 8.9<br />

Butadiene-nitrile rubber SCN-26 5.1<br />

Polydiene-urethane-epoxide PDUE 16.0<br />

Polybutadiene urethane PBU 20.8<br />

Polyoxybutylene glycol urethane PFU 10.0<br />

Polyoxypropylene glycol urethane Laprol 5003 43.0<br />

Polydiethylene glycol adipate urethane P-9A 6.4<br />

Polydiethylene glycol adipate urethane PDA 9.6<br />

Table 6.3.2 Equilibrium swelling data (wt%) at 25 o C<br />

Solvent\elastomer SCT BR SCDL SCEPT SCI<br />

-NL<br />

Hydrocarbons<br />

Pentane 355 75 214<br />

SCN<br />

-26<br />

PDUE PBU<br />

SCU<br />

-PFL<br />

Laprol P-9A PDA<br />

Hexane 380 305 105 586 300 122 78 16 44 4<br />

Heptane 367 357 881 10 137 84 16 42 0<br />

Isooctane 380 341 101 32 0<br />

Decane 391 1020 7 139 28 1<br />

Cyclohexane 677 155 315 39 3<br />

Transformer oil 47 230 1580 600 24 238 3 53 4 0.5<br />

Toluene 384 1294 435 492 356 134 315 77 31<br />

Benzene 233 511 506 479 359 158 340 175 73<br />

o-Xylene<br />

Ethers<br />

515 496 356 122 288 53 42<br />

Diamyl 310 220 889 584 20 248 87 2

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