润滑油对轮胎主要成分催化裂解行为的影响

Effects of lubricant base oil on catalytic cracking behaviors of tire rubbers

本文研究了润滑油对轮胎的重要组成原料:天然橡胶、聚丁二烯橡胶和丁苯橡胶催化裂解行为的影响。研究发现润滑油的加入明显增强了催化剂ZSM-5对聚丁二烯橡胶的催化裂解作用:液体收率从69.0%提高到83.4%,残渣收率从17.0%降至3.2%;润滑油的加入也提高了丁苯橡胶催化裂解的反应速率,液体产物中的轻油组分由67.5%增加至92.0%,平均碳原子数由10.5降至8.9;润滑油的加入同样提高了天然橡胶催化裂解液体产物品质:液体产物中的轻油组分由79.8%增加至97.2%,平均碳原子数由10.3降至8.3。

Effects of lubricant base oil（LBO）on catalytic cracking behaviors of three main components in tire rubbers,including natural rubber（NR）,polybutadiene rubber（BR）,styrene-butadiene rubber（SBR）over ZSM-5 zeolite,were investigated.It is found that LBO obviously enhances the catalytic effects of ZSM-5 for pyrolysis of polybutadiene rubber：the pyrolysis rate increases;liquid yields increase from 69.0% to 83.4%,and residue yields decrease from 17.0% to 3.2%.For SBR,LBO increases the pyrolysis rate and the contents of light hydrocarbons from 67.5% to 92.0%,and decreases the average carbon number of the liquid products from 10.5 to 8.9.For NR,LBO increases the quality of the pyrolysis oil：the content of light hydrocarbons in liquid products increases from 79.8% to 97.2%,and the average carbon number of the liquid products decreases from 10.3 to 8.3.