油溶性聚醚的制备及其抗氧化性能考察

摘要

以氢氧化钾作为催化剂，环氧丙烷与环氧丁烷共聚制备了分别符合黏度级别 OSP-18，OSP-46， OSP-150要求的油溶性聚醚，并通过红外光谱（IR）、核磁共振（NMR）和凝胶渗透色谱（GPC）对其进行表征。利用旋转氧弹测试方法考察了油溶性聚醚的抗氧化性能，结果表明油溶性聚醚本身的抗氧化性能较差。通过考察不同抗氧剂与油溶性聚醚的互配性，开发了α-苯胺与氨基甲酸酯组成的复合抗氧剂，该复合抗氧剂与油溶性聚醚有较好的互配性，可使油溶性聚醚的旋转氧弹时间达到1200 min，复合抗氧剂可使油溶性聚醚在不同配方体系中得到应用。%Oil-soluble polyether (OSP)was prepared by the copolymerization of propylene oxide and butylene oxide using KOH as a catalyst.The viscosity grades of the prepared oil-soluble polyether are OSP-18,OSP-46,OSP-150,respectively.The structures of the products were defined by means of infra-red spectroscopy (IR),nuclear magnetic resonance (NMR)and gel permeation chromatography (GPC). The anti-oxidation performance of OSPs were investigated by rotary oxygen bomb test method (ROBT).The results indicate that the oil-soluble polyether is poor in anti-oxidation with short induc-tion period.However,the performance of the oil-soluble polyether is greatly improved by addition of the composite antioxidant,composed of α-aniline (AOA-4 )and carbamate (AOL-1 ). The ROBT can reach to 1 200 minutes.The performance of this composite antioxidant makes OSP the best application in different formulations.