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第54卷第7期                                       涂料工业                                     Vol. 54  No. 7
              2024年7月                    相政乐等:聚脲在海管节点补口防腐涂层中的应用研究                                     Jul. 2024
                                                   PAINT & COATINGS INDUSTRY


                         聚 在海  点  防腐涂层中的应用研究




                                      相 乐,   ,             利,        ,       ,
                                  (海   珠海管 工程有限公司,广东珠海519000)

                     摘 要:为简化海管节点施工工艺,同时降低节点补口成本,开展了喷涂聚脲在节点补口防腐涂
                 层中的适用性研究。以国内 A 公司和国外 B 公司的喷涂聚脲分别制备海管节点防腐涂层,并对涂层
                 性能进行系统全面的分析研究。结果表明:聚脲涂层均表现出优异的力学性能、电绝缘性、耐水性及
                 热处理后拉伸强度保持率,但是其与基材的界面黏结在阴极剥离试验后会出现失效的情况,同时 2种
                 涂层经盐、碱、酸处理后拉伸强度保持率也较差。
                     关键词:聚脲;防腐涂层;海管;节点补口
                     中图分类号:TQ635. 2  文献标志码:A  文章编号:0253-4312(2024)07-0060-05
                     doi:10. 12020/j. issn. 0253-4312. 2023-405
                  Study on Application of Polyurea in Field  oints Anti-corrosive

                                           Coating for Subsea Pipeline


                        XIANG Zhengle,ZHANG Qifa,ZHAO Li,ZHAO Cen,IA Zhen,ZHANG Xiang
                                                                            J
                            (CNOOC Energy Technology   Services Zhuhai Pipe Engineering Co     Ltd     Zhuhai,
                                                  Guangdong   519000,China)

                      Abstract:n order to simplify the coating process and reduce the cost of field joints,he
                                                                                                        t
                                I
                 applicability of spraying polyurea in field joints was studied in the paper. The field joints anti-
                 corrosive  coating  of  subsea  pipeline  were  prepared  by  using  polyurea  from  A  domestic

                 company  and  B  foreign  company. A  systematic  and  comprehensive  analysis  of  the  coating
                 properties  was  studied. The  results  showed  that  both  polyurea  coating  had  excellent
                 mechanical  properties,electrical  insulation,water  resistence  and  tensile  strength  retention
                 after  heat  treatment. But  the  interface  bonding  between  them  and  the  substrate  failed  after
                 cathodic stripping,and the tensile strength retention rate of the two coatings after salt,alkali
                 and acid treatment was poor.
                                                                                 f
                                           a
                                                                 s
                      Key words:polyurea;nti-corrosive coating;ubsea pipeline;ield joints
                 海管作为海上油气输送的主要设施,其腐蚀防                           能的优劣对管道的腐蚀防护有重要影响                      [2-3] 。对于
             护十分重要,通常采用涂层和阴极保护联合的方式                             节点补口防腐涂层,不仅要与管道主体涂层实现良
             进行 。国内海管防腐层结构主要为三层聚乙烯                              好的兼容,还要具备与主体涂层相匹配的腐蚀防护
                 [1]
            (3LPE)和三层聚丙烯(3LPP)等,其节点补口防腐涂                        性能,并能够满足 管作业的快速施工要求。目前
             层是最薄弱的环节之一,因此节点补口防腐涂层性                             海管节点补口防腐涂层主要为带底漆的热熔胶型

             第一作者:相 乐(1980—),男,硕士,  工程师,主要从事海底管道新产品、新技术的开发与应用。
             本文规范引用格式:
             相 乐,张启发,赵利,等. 聚脲在海管节点  防腐涂层中的应用研究[J]. 涂料工业,2024,54(7):60-64.
             XIANG  Z  L,ZHANG  Q  F,ZHAO  LI,t al. Study on application of polyurea in field joints anti-corrosive coating for subsea pipeline[J]. Paint & Coatings
                                       e
             Industry,2024,54(7):60-64.
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