STEEL CORD-RUBBER COMPOSITE AND PNEUMATIC TIRE

• Main Author: OZAKI TAKUYA
• Format: Patent
• Language: Chinese; English
• Published: 24.12.2021
• Subjects: CABLES OTHER THAN ELECTRIC; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; DEVICES OR ARRANGEMENTS RELATED TO TYRES; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; REPAIRING, OR CONNECTING VALVES TO, INFLATABLE ELASTIC BODIESIN GENERAL; ROPES; ROPES OR CABLES IN GENERAL; TEXTILES; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; TYRE CHANGING OR REPAIRING; TYRE INFLATION; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; VEHICLE TYRES; VEHICLES IN GENERAL

The present invention is a steel cord-rubber composite comprising a rubber composition and steel cords, and is characterized in that: the rubber composition contains a rubber component, a filler, a thermosetting resin, a methylene donor, a thiuram-based vulcanization accelerator, and a sulfonamide-based vulcanization accelerator, and has a cobalt compound content of 0.01 parts by mass or less; and the steel cords have been plated with a ternary alloy. The present invention improves the adhesiveness of the steel cord-rubber composite, particularly the adhesiveness after hygrothermal degradation, and also improves fuel economy and crack propagation resistance of a pneumatic tire in which this steel-cord rubber composite is used, and achieves a favorable balance between both. 本发明为一种钢丝帘线-橡胶复合体，其包括橡胶组合物和钢丝帘线，并且其特征在于：所述橡胶组合物包含橡胶组分、填料、热固性树脂、亚甲基供体、秋兰姆系硫化促进剂、和次磺酰胺系硫化促进剂，并且具有钴化合物的含量为0.01质量份以下；并且所述钢丝帘线已经施加有三元系合金镀层。本发明改善了钢丝帘线-橡胶复合体的粘合性，特别是湿热劣化后的粘合性，并且还改善了其中使用该钢丝帘线-橡胶复合体的充气轮胎的耐龟裂扩展性和低燃料消耗性，并且实现了二者之间的良好的平衡。