Composition for non-pneumatic tire spoke
AssigneesKumho Tire Co., Inc., Korea Advanced Institute of Science and Technology
InventorsKee Woon Kim, Gwi Seong Shin, Chul Woo Kwark, Soon Wook Hwang, Bumjoon Kim, Jin-Seong Kim, Joonhyeong Choi, Sung Keun Park
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Abstract
The present invention relates to a composition for a non-pneumatic tire spoke. In particular, the non-pneumatic tire spoke prepared from the composition for a non-pneumatic tire spoke has excellent mechanical properties. A composition for a non-pneumatic tire spoke includes a thermoplastic polyester elastomer, a silane-based interfacial binder, and silica particles. The silica particles have an average particle diameter of 100 to 300 μm.
Claims7
A composition for a non-pneumatic tire spoke, which comprises a thermoplastic polyester elastomer, a silane-based interfacial binder, and silica particles,
- wherein the thermoplastic polyester elastomer comprises a polyester block copolymer which comprises a hard segment (a1) and a soft segment (a2),
- wherein the hard segment (a1) comprises 1) an aromatic dicarboxylic acid or an ester derivative thereof, and 2) a diol or an ester derivative thereof,
- wherein the soft segment (a2) comprises 1) a polycarbonate unit and 2) an aliphatic polyether unit and/or an aliphatic polyester unit, and
- wherein the composition comprises 5 to 15 parts by weight of the silica particles and 0.5 to 1.5 parts by weight of the silane-based interfacial binder per 100 parts by weight of the thermoplastic polyester elastomer.
A process for manufacturing a non-pneumatic tire spoke, the process comprising:
- mixing a thermoplastic polyester elastomer, a silane-based interfacial binder, and silica particles to prepare a mixture;
- and
- molding the mixture,
- wherein the thermoplastic polyester elastomer comprises a polyester block copolymer which comprises a hard segment (a1) and a soft segment (a2),
- wherein the hard segment (a1) comprises 1) an aromatic dicarboxylic acid or an ester derivative thereof, and 2) a diol or an ester derivative thereof,
- wherein the soft segment (a2) comprises 1) a polycarbonate unit and 2) an aliphatic polyether unit and/or an aliphatic polyester unit, and
- wherein the mixture comprises 5 to 15 parts by weight of the silica particles and 0.5 to 1.5 parts by weight of the silane-based interfacial binder per 100 parts by weight of the thermoplastic polyester elastomer.
Dependencies are inferred from the claim text.