为降低轮胎橡胶释放的挥发性有机化合物（VOCs）的质量分数，避免对环境和人体健康造成危害，采用超声溶剂提取、气相色谱质谱联用技术对轮胎橡胶及其原材料进行定性分析，对产品中挥发性有机化合物进行了溯源，并确定了主要的挥发性有机化合物。结果表明，轮胎橡胶中VOCs质量较多的是烯烃、酚类和含氮类化合物，其来源于增黏树脂、防老剂以及其他添加剂。通过更换VOCs质量分数较低的原材料得到低VOCs轮胎橡胶配方，使得最终低VOCs橡胶配方的VOCs质量分数降低了42.89%，并对其力学性能进行了测定。低VOCs配方的拉伸强度、撕裂强度和硬度都有不同程度的提高，新配方显示出良好的力学性能，满足使用要求。

In order to reduce the content of volatile organic compounds (VOCs) released by tire and avoid causing harm to the environment and human health,ultrasonic solvent extraction combined with gas chromatography-mass spectrometry technology are utilized to qualitatively analyze tire and its raw materials.Then the source of VOCs in the tire is traced,and main VOCs in the tire are determined.Results show that VOCs with the most contents in tire rubber include olefins,phenols,and nitrogen-containing compounds,which are sources from tackifying resins,antioxidant,and other additives,respectively.A low-VOCs rubber formula for tire is obtained by replacement of raw materials with lower VOCs content,which reduces VOCs content by 42.89%.Mechanical properties of the low-VOCs rubber formula are measured.There are different degrees of improvement in the tensile strength,tear strength and hardness in the low-VOCs formula,showing good mechanical properties which can meet the requirements of use.

张博宇(1996-),男,硕士研究生,研究方向为挥发性有机化合物检测,13366973696@163.com;杜振霞(1968-),女,博士,教授,研究方向为挥发性有机化合物检测方法研究,通讯联系人,duzx@mail.buct.edu.cn。