The invention discloses a preparation method of anti-reversion sidewall rubber for run-flat tires, and relates to the technical field of rubber production. The rubber is prepared from the following raw materials in parts by weight: natural rubber, ethylene propylene diene monomer, carbon black, an elastomer compatibilizer, zinc oxide, stearic acid, operating oil, an internal releasing agent, microcrystalline wax, an anti-aging agent RD, an accelerant, sulfur and an anti-reversion aid. The preparation method comprises the following steps: putting the natural rubber and the ethylene propylene diene monomer into an internal mixer, adding the carbon black, the elastomer compatibilizer, the zinc oxide, the stearic acid, the operating oil, the internal releasing agent, the microcrystalline wax and the anti-aging agent RD into the internal mixer, adding the accelerant, the sulfur and the anti-reversion assistant into the internal mixer, and finally vulcanizing. The sidewall rubber has good vulcanization reversion resistance, and the resilience, flexibility, tearing strength, low heat generation and other properties of vulcanized rubber can still be well maintained.
本发明公开了一种用于缺气保用轮胎的抗硫化返原的胎侧胶的制备方法,涉及橡胶生产的技术领域。由下述原料按重量份配比组成:天然橡胶、三元乙丙橡胶、炭黑、弹性体增容剂、氧化锌、硬脂酸、操作油、内脱模剂、微晶石蜡、防老剂RD、促进剂、硫磺、抗硫化返原助剂;先将天然橡胶和三元乙丙橡胶置于密炼机中,再将炭黑、弹性体增容剂、氧化锌、硬脂酸、操作油、内脱模剂、微晶石蜡和防老剂RD加入到密炼机中,再将促进剂、硫磺和抗硫化返原助剂加入到密炼机中,最后硫化。该胎侧胶不仅具有良好的抗硫化返原性,同时硫化胶的回弹性、曲挠性和抗撕裂强度及生热低等性能仍可以较好的保持。
Preparation method of anti-reversion sidewall rubber for run-flat tires
一种用于缺气保用轮胎的抗硫化返原的胎侧胶的制备方法
23.06.2020
Patent
Elektronische Ressource
Chinesisch
IPC: | C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen / B60C VEHICLE TYRES , Fahrzeugreifen / C08K Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe , USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS |
Anti-revulcanization support rubber for run-flat tires
Europäisches Patentamt | 2020
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