目前,埋地长输油气管道采用防腐涂层和阴极保护联合的方式进行防腐蚀保护,管道涂层作为管道腐蚀与防护的关键技术之一,已发展了半个多世纪,目前仍属于全世界范围内的研究热点。管道涂层保护主要是利用具有良好绝缘性、抗渗透性、抗冲击性等性能的防腐涂层,阻止周围环境中的水分、氧及腐蚀性介质进入,从而达到防腐蚀的目的。 At present, buried long-distance oil and gas pipelines adopt anti-corrosive coating and cathodic protection to prevent corrosion. Pipeline coating, as one of the key technologies of pipeline corrosion and protection, has been developed for more than half a century and still belongs to the world Research hotspot within the scope. Pipeline coating protection mainly utilizes the anti-corrosion coating with good insulation, permeability and impact resistance to prevent moisture, oxygen and corrosive medium from entering the environment, so as to achieve the purpose of anti-corrosion.