The invention relates to the technical field of tire rubber manufacturing, and discloses a low-heat-generation high-temperature-resistant base rubber composition which is prepared by mixing the following raw materials in parts by weight: 65-80 parts of rubber, 30-55 parts of filler A, 3.5-8.5 parts of an activating agent, 3-5 parts of a vulcanizing agent, 1.5-4 parts of an anti-aging agent, 0.5-1.5 parts of tear-resistant resin and 20-45 parts of a nano reinforced composite material, 0.5 to 2 parts of microcrystalline wax, and 0.01 to 0.3 part of scorch retarder CTP; the nano reinforced composite material is prepared by mixing natural rubber, a filler B, organic sulfide and dihydrazide. Through non-homogeneous distribution of the filler, the nano reinforced composite material can absorb a large amount of energy in the stretching process, so that the damage resistance and the high-temperature performance of the rubber material are improved; the dihydrazide enhances the chemical bonding between the nano reinforced composite material and the natural rubber, and reacts with aldehyde groups, carboxyl groups, carbonyl groups and other groups at the tail end of the rubber, so that the activity of the tail end of a free radical is reduced, and the heat generation is reduced.
本发明涉及轮胎橡胶制造技术领域,公开了一种低生热耐高温基部橡胶组合物,所述橡胶组合物按重量份计包括以下组分的原料混炼制备得到:橡胶65‑80份,填料A 30‑55份,活化剂3.5‑8.5份,硫化剂3‑5份,防老剂1.5‑4份,抗撕裂树脂0.5‑1.5份,纳米增强复合材料20‑45,微晶蜡0.5‑2份,防焦剂CTP 0.01‑0.3份;纳米增强复合材料由天然橡胶、填料B、有机硫化物和二酰肼混炼制备得到。本发明通过填料的不均相分布,纳米增强复合材料在拉伸的过程中能够大量的吸收能量,从而提高胶料的抗破坏能力及其高温性能;二酰肼增强了纳米增强复合材料与天然橡胶的化学结合,并与橡胶末端醛基、羧基和羰基等基团反应,降低自由基末端活性,从而降低生热。
Low-heat-generation high-temperature-resistant base rubber composition, mixing method and tire
一种低生热耐高温基部橡胶组合物、混炼方法和轮胎
2025-01-24
Patent
Electronic Resource
Chinese
IPC: | C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen / B29B PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED , Vorbereiten oder Vorbehandeln der zu verformenden Masse / 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 |
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