The invention discloses a high-durability gradient reinforced composite material for an aircraft tire and a tire bead structure of the aircraft tire. The Shore A hardness of the high-durability gradient reinforced composite material is 50-75 degrees, the 100%-300% stress at definite elongation is larger than or equal to 5 MPa, the tensile strength is larger than or equal to 20 MPa, and the elongation at break is larger than or equal to 450%. In the thickness direction, the high-durability gradient reinforced composite material has a hardness gradient and/or a modulus gradient. Tire bead reinforcing rubber is arranged between tire bead rubber and the rim edge of the tire bead structure of the aircraft tire, the tire bead reinforcing rubber adopts the high-durability gradient reinforced composite material, the hardness of the tire bead reinforcing rubber is gradually increased and/or the modulus is gradually increased in the direction from the tire bead rubber to the rim edge, the concentration phenomenon of dynamic strain is effectively reduced, the heat generation amount is reduced, and the service life of the tire bead structure is prolonged. Material aging and performance degradation caused by high temperature are avoided, the durability and fatigue resistance of the tire bead structure are remarkably improved, and the use requirements of aircraft tires under high-load and high-frequency strain working conditions are met.
一种航空轮胎用高耐久梯度增强复合材料和航空轮胎胎圈结构,所述高耐久梯度增强复合材料的邵尔A硬度为50°‑75°,100%‑300%定伸应力≥5MPa,拉伸强度≥20MPa,拉断伸长率≥450%;在厚度方向上,高耐久梯度增强复合材料具有硬度梯度和/或模量梯度。航空轮胎胎圈结构的胎圈胶与轮辋边缘之间设有胎圈补强胶,胎圈补强胶采用前述高耐久梯度增强复合材料,从胎圈胶向轮辋边缘方向,胎圈补强胶的硬度逐渐增加,和/或模量逐渐增加,有效减少了动态应变的集中现象,降低生热量,避免因高温引起的材料老化和性能衰退,显著提升胎圈结构的耐久性和抗疲劳性能,满足航空轮胎在高负荷、高频应变工况下的使用需求。
High-durability gradient reinforced composite material for aircraft tire and aircraft tire bead structure
航空轮胎用高耐久梯度增强复合材料和航空轮胎胎圈结构
21.03.2025
Patent
Elektronische Ressource
Chinesisch
IPC: | B60C VEHICLE TYRES , Fahrzeugreifen / C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen / B29D PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE , Herstellen besonderer Gegenstände aus Kunststoff oder aus Stoffen in plastischem Zustand / C08K Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe , USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS |
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