Page 42 - 《涂层与防护》2019年第7期
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涂层与防护
             第 40 卷第 7 期                                                                              Vol.40 No.7
                                                                                                          Jul.2019
             2019 年 7 月
                                                     COATING AND PROTECTION



                天然气管道用双层粉末涂料的制备与应用研究




                                              侯海涛，李桂林，陆建楼，李俊兰
                                                （石家庄市油漆厂，石家庄 050051）


                      摘要： 研究了天然气管道用双层粉末涂料的配方组成。 底层以环氧树脂与双氰胺固化剂为主要成膜
                  物；面层以聚酯树脂与 TGIC 固化剂为主要成膜物，配以各种颜料、填料及助剂复配而成。 探讨了底层粉末
                  涂料环氧树脂的筛选、附着力促进剂用量，面层粉末涂料聚酯树脂的筛选、产品粒径、胶化时间、施工工艺
                  等方面的影响因素。 可实现一烤二涂的施工方式。 制备的双层粉末涂料不含溶剂、涂装能耗低、涂覆效率
                  高，是符合 RoHS 指令的绿色环保产品，能够满足对防腐、耐候均有较高要求的天然气管道粉末涂料客户
                  的应用。
                      关键词：天然气管道；双层粉末涂料；防腐；耐候；施工应用
                      中图分类号：TQ630.7          文献标识码：A        文章编号：1672-2418(2019)07-0026-05


                  Preparation and Application of Double-Layer Powder

                                    Coatings for Natural Gas Pipelines



                                         Hou haitao, Li Guilin, Lu Jianlou, Li Junlan
                                   (Paint Factory of Shijiazhuang City, Shijiazhuang 050051, China)


                     Abstract: The formula composition of the double-layer powder coatings for natural gas pipeline
                  is analyzed.Epoxy resin and dicyandiamide curing agent were used as the main film -forming
                  materials for primer.The topcoat comprises polyester resin and TGIC curing agent as the main film-
                  forming materials in addtion to various pigments, fillers and additives.The influential factors
                  including the selection of epoxy resin, the amount of adhesion promoter, the selection of polyester
                  resin, the particle size, the gel time and the construction process, etc. were discussed. It revealed
                  that a coating process 1B2C could be obtained. Meanwhile, the prepared double -layer powder
                  coatings contained no solvent and showed a lower energy consumption and higher coating efficiency,
                  which could be regarded as a kind of environmental friendly product complied with the RoHS
                  directive. The product can meet the high requirements of natural gas pipeline in terms of
                  anticorrosion and weatherability.
                      Keywords： natural gas pipelines; double -layer powder coatings; corrosion protection;
                  weatherability; construction application





             0 引言                                               料，用途广，品种多。 其优点有树脂的熔融黏度低，涂
                                                                膜的流平性较好， 同时由于固化时不产生任何副产
                 环氧粉末涂料是开发应用最早的热固性粉末涂                           物，易于得到平整的漆膜；涂膜的物理机械性能及耐

              26     涂层技术 COATING TECHNOLOGY
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