Abstract:

The carbon emissions from the tire manufacturing process are one of the main sources of carbon emissions in the automotive industry chain, and it is urgent to conduct carbon emission modeling and carbon footprint analysis on it. Based on this, taking 6.50R16LT radial tire as the research object, a life cycle assessment (LCA) based radial tire carbon footprint model was constructed to accurately calculate the carbon emissions during the tire manufacturing process. A sensitivity analysis method for carbon footprint in tire manufacturing process based on the combination of OAT and e-FAST was propose, and the carbon emission patterns of different stages and processes in tire manufacturing process were analyzed. The results indicated that the use stage contributed the most to the carbon footprint during the tire lifecycle, accounting for 78.50%, followed by the raw material stage, which accounted for 11.60%. The compounding process had the highest contribution to the carbon footprint of tires during the manufacturing process accounting for 42.16%, followed by the vulcanization process, which had a higher carbon footprint contribution accounting for 19.02%. In the global sensitivity analysis, the highest sensitivity of electric energy to tire carbon emissions was 0.425, followed by skeleton materials>natural rubber>carbon black. This study would provide decision-making basis for the precise implementation of energy conservation and carbon reduction in the tire industry.

Key words: radial tires, life cycle assessment (LCA), carbon footprint analysis, global sensitivity analysis, carbon emission

摘要：

轮胎制造过程碳排放是汽车产业链主要碳排放源之一，对其进行碳排放建模与碳足迹分析是当务之急。基于此，以6.50R16LT型子午线轮胎作为研究对象，构建基于全生命周期评价（LCA）的子午线轮胎碳足迹模型，精准核算轮胎制造过程碳排放；提出一种基于OAT与e-FAST结合的轮胎制造过程碳足迹敏感性分析方法，解析轮胎制造过程不同阶段不同工序碳排放规律。结果表明：在轮胎生命周期阶段中使用阶段碳足迹贡献最大，占比78.50%，其次为原材料阶段占比11.60%；制造过程中密炼工序对轮胎碳足迹贡献量最高，占比42.16%，其次硫化工序的碳足迹贡献较高，占比19.02%；全局敏感性分析中电能对轮胎碳排放敏感度最高为0.425，其次为骨架材料>天然胶>炭黑。本文研究以期将为轮胎行业精准实施节能降碳提供决策依据。

关键词: 子午线轮胎, 全生命周期评价, 碳足迹分析, 全局敏感性分析, 碳排放