| 摘要 |
A hydrogenated styrene block copolymer thermoplastic elastomer with a cross-linkable rigid block, having a following structure: C1-(Ax-By)n-C2, [C1-(Ax-By)n-C2]m-R or [C1-(Ax-By)n]m-R, and formed by polymerizing an anionic solution. The styrene monomers in the block copolymer have a weight percentage weight of 50-80%, a number-average molecular weight of 50000-300000 g/mol, and a molecular weight distribution index of 1.05-1.45. In a polymerization block C of the cross-linkable styrene monomer, the weight percentage content of cross-linkable styrene monomer units in the whole block polymer is 2.0-9.0%. The copolymer has an obvious internal friction peak (tanδ) at -30-35°C, a peak value of the internal friction peak is -5-10°C, and the peak value tanδ ≥ 0.7. The thermoplastic elastomer shows relatively low compressive permanent deformation. Also disclosed are a preparation method for the thermoplastic elastomer and a use of the thermoplastic elastomer. |
