渣油用于合成阻燃剂的新型利用

NEW UTILIZATION OF RESIDUE FOR SYNTHESIS OF FLAME RETARDANT

渣油的平均相对分子质量较大,富含稠环芳烃,具有残炭高、氧指数高的特点,所以热性能稳定,可产生一定的阻燃性。通过经典液相色谱法富集渣油中的芳香组分,对芳香组分进行改性,在芳环结构上中引入醛基,经过还原、合成等有机反应,合成渣油改性阻燃剂。红外光谱、热重分析-差热分析、残炭和氧指数等测试与表征结果表明,成功合成了具备阻燃性能的新型渣油改性阻燃剂。测试阻燃聚乙烯材料的极限氧指数和垂直燃烧等级,结合电镜扫描结果,证实渣油改性阻燃剂有较高的阻燃效率。将渣油改性合成芳香酯阻燃剂及复配成新型的膨胀阻燃剂,不仅可用于制备阻燃高分子材料,也提供了阻燃剂合成原料的新来源,开辟渣油高附加值利用新途径。

Residue is rich in polycyclic aromatics with large carbon residue and high oxygen index,so it has stable thermal stability and flame retardancy.Aromatics are obtained by separating the residue,hydroxyl groups are introduced into their structures by chemical modification method,and flame retardant with aromatic phosphate ester is got by reacting with phosphorus oxychloride.The results of FTIR,TG/DTG,carbon residue and oxygen index show that a new type of residue flame retardant with flame retardancy is successfully synthesized.The flame-retardant PE is characterized by LOI and the UL-94 tests.The results show that the modified residue have great flame retardant.The synthesis of aromatic ester flame retardants modified by residuum and the compounding of them into new intumescent flame retardants can not only be used to prepare flame retardant polymers,but also provide a new source of raw materials for flame retardants synthesis and open up a new way for high value-added utilization of residue.