1. The ratio of nitrogen-adsorption on the carbon black surface is recommendatory test index. + s( C: Y7 F+ S / c: F* @3 G9 ^6 ]3 ` |2. 300% Stretching Stress is to get the carbon black disparity between the everyday carbon black (SRB3#) sample and the standard in the same experimental situation, with I type and dumbbell type reamer set by GB/T528. The vulcanization of the carbon black lasts 30 minutes under the average temperature of (145±1) .& J/ u- t* t+ o: i/ K
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3. All the technical indicators are taken as that of qualified products.4 z* s0 [. s( `4 F' v
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控泰橡膠（上海）有限公司 ) V* u$ E9 V, I1 ?7 s, ?+ { # g) E9 T; ~3 m, ~0 f* n9 V& aChan Kun/ `; x& W4 g) ~+ D
Project Manager" e, j7 g3 ] R' z X) z! v
Shanghai 24hr Tel:177017616272 / T& U0 @0 z+ G; E. |3 A! ?Headquarters:+(00852)25223588# }, b, Z+ C' d) N0 E* q9 n" n
QQ:2273789357
