探索天然气制乙炔副产炭黑的利用新途径对于实现资源高效利用、促进化工企业经济增长以及降低环境污染具有重要意义。针对天然气制乙炔副产炭黑表面活性不佳限制了其在补强领域的应用等问题，提出了用白炭黑原位复合副产炭黑的方法制备复合材料，并将其用于丁苯橡胶的补强。分别采用扫描电子显微镜（SEM）、热重分析（TGA）、红外光谱（FT-IR）、吸油值、接触角、粒径分析（DLS）、电子万能材料试验机等手段对样品的性能进行表征。实验结果表明，采用原位复合的方式成功将白炭黑包覆在副产炭黑表面，无规则形貌的炭黑转变为规整的球形结构，D₅₀粒径由9.54 μm增大到30.04 μm，吸油值由1.2 mL/g提高到3.04 mL/g，接触角由85.62°降低到38.29°，亲水性明显增强。副产炭黑/白炭黑复合材料对丁苯橡胶的增强作用比单一的副产炭黑增强效果明显提升，其邵A硬度提升10%，拉伸强度、断裂伸长率以及定伸应力（300%、500%）分别提高了60%、14%、10%、13%。该复合材料的开发为炭黑资源化、高值化利用提供了新途径，有效助力天然气化工绿色可持续发展。

Exploring new ways to utilize carbon black of by?products of acetylene production from natural gas is of great significance for realizing the efficient utilization of resources，promoting the economic growth of chemical enterprises and reducing environmental pollution.In view of the poor surface activity of by?product of acetylene production from natural gas that limits its application in the field of reinforcement，the method of in?situ synthesis of by?product carbon black with silica was proposed to prepare composite materials，and the obtained products were used to reinforce styrene butadiene rubber.The samples were characterized by scanning electron microscopy（SEM），thermogravimetric analysis（TGA），infrared spectroscopy（FT-IR），oil absorption value，contact angle，particle size analysis（DLS） and electronic universal material testing machine.The results showed that the white carbon black was coated on the surface of by?product carbon black successfully by in?situ recombination method，and the amorphous carbon black was transformed into a regular spherical structure，the particle size of D₅₀ was increased from 9.54 μm to 30.04 μm，the oil absorption value was increased from 1.2 mL/g to 3.04 mL/g，the contact angle was decreased from 85.62° to 38.29°，which meant the hydrophilicity was obviously enhanced.The reinforcement effect of by-product carbon black/white carbon black composite on styrene butadiene rubber was better than that of single by?product carbon black.And the Shore A hardness was increased by 10%，tensile strength，elongation at break and tensile modulus （300%，500%） of the modified carbon black reinforced rubber were 60%，14%，10% and 13% higher，respectively.The development of this composite material expanded the scope of carbon black resource utilization，and effectively boosted the green and sustainable development of natural gas chemical industry.