苯乙烯/异戊二烯渐变嵌段共聚物的负离子法合成和性能

廖明义,徐晓川

Anionic Synthesis and Dynamic Mechanical Poperties of Styrene/Isoprene Copolymers with Gradient Blocks

Mingyi LIAO,Xiaochuan XU

表4 调节剂加入时间对S/I共聚物力学性能的影响

Table 4 Effect of the modifier addition time on the mechanical properties of S/I copolymers

Sample No. 1 2 3 4 5 6 7 8 9 Shore hardness 74 76 78 82 88 87 88 86 86 Tensile strength/MPa 18.1 17.8 17.7 17.4 17.0 17.1 16.2 16.1 16.2 Tear strength/N·mm-1 32 32 33 38 36 38 36 38 37 Elongation at break/% 406 401 360 341 348 342 276 264 270