Hao WANG, Lan-ge LI, Ri-guo WANG, Tai-chen LI, Huai-tao GE, Xue-bin REN, Bo LUAN. The Influence of the Contents of Butadiene Repeating Units on the Properties of Trans-1,4-Poly(butadiene-co-isoprene) Copolymer Rubber[J]. Polymer Bulletin, 2020,33(8):33-40.
Hao WANG, Lan-ge LI, Ri-guo WANG, Tai-chen LI, Huai-tao GE, Xue-bin REN, Bo LUAN. The Influence of the Contents of Butadiene Repeating Units on the Properties of Trans-1,4-Poly(butadiene-co-isoprene) Copolymer Rubber[J]. Polymer Bulletin, 2020,33(8):33-40. DOI: 10.14028/j.cnki.1003-3726.2020.08.003.
The influence of the contents of butadiene repeating units (0~24.3%(mol)) on the properties of trans-1
4- Poly(butadiene-co-isoprene) copolymer rubber (TBIR) were invested. The results showed that
the thermo stability of TBIR molecular chain improved with the increase of the contents of butadiene repeating units. The scorch time and optimum curing time were slightly delayed
the crosslinking density increased slightly. The crystallinity of TBIR vulcanizates was greatly weakened until it disappeared. TBIR vulcanizates with 0% (mol) and 8.5% (mol) butadiene repeating units showed strong and tough tensile deformation behavior
the higher tensile strength and modulus
the lower elongation at break. TBIR vulcanizates with 16.3% (mol) and 24.3% (mol) butadiene repeating units showed tensile deformation behavior of typical vulcanized rubber
the lower tensile strength and modulus
the higher elongation at break. The rolling resistance and heat built-up of TBIR vulcanizates decreased obviously
the wet-skid resistance
abrasion resistance
rebounce and ageing resistance improved significantly with the increase of the contents of butadiene repeating units. TBIR with higher contents of butadiene repeating units have better devil triangle properties for high performances tyre.