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发明公开
CN107057576A 一种用于铁路轨道扣件的石墨烯防腐粉末涂料 无效 - 驳回

一种用于铁路轨道扣件的石墨烯防腐粉末涂料
摘要：
本发明涉及一种石墨烯防腐粉末涂料，按重量配比组成为，树脂55‑80%；固化剂5‑20%；功能性填料5‑25%；颜料0.2‑3%；消泡剂0.5‑3%；脱气剂0.5‑2%；流平剂0.5‑3%；砂纹剂2‑5%；光亮剂0.5‑2%；固化促进剂0.5‑3%；防结块剂0.1‑2%；石墨烯0.01‑5%，所有组分重量之和为100%；使用步骤包括，a. 扣件的前处理，b. 扣件静电喷涂，c. 扣件高温固化，d. 扣件上道应用。涂料中添加防腐组分石墨烯，涂层中性盐雾时间达到1 500 h、人工气候老化时间达到1 500 h、抗冲击强度达到150 kg·cm，均超过国标标准3倍以上；加工过程中采用了高温固化工艺，涂料与扣件表面的吸附力提高，涂层附着力提升到0级。添加石墨烯后，涂层的指标大幅提高，增强扣件的耐腐蚀能力，使得扣件的使用寿命延长，便于日常维护，减少更换次数。
摘要（英）：

The invention relates to a graphene anticorrosive powder coating which is prepared from the following components in percentage by weight: 55-80% of resin, 5-20% of curing agent, 5-25% of functional filler, 0.2-3% of pigment, 0.5-3% of antifoaming agent, 0.5-2% of degassing agent, 0.5-3% of leveling agent, 2-5% of sand texture agent, 0.5-2% of brightening agent, 0.5-3% of curing accelerator, 0.1-2% of anti-caking agent and 0.01-5% of graphene, wherein the weight percentage sum of all the components is 100%. The graphene anticorrosive powder coating is used by the following steps: (a) pretreatment of a fastener; (b) electrostatic coating of the fastener; (c) high-temperature curing of the fastener; (d) applying of the fastener to a track. The coating is added with an anticorrosive component graphene; the neutral salt mist time of the coating reaches 1,500h, the artificial weathering aging time reaches 1,500h, and the impact strength reaches 150kg.cm, all exceeding the international standard by more than three times; a high-temperature curing technology is adopted in the processing process; the adsorption force between the coating and the surface of the fastener is enhanced; the coating adhesion is raised to a level 0; after the graphene is added, the indexes of the coating are remarkably improved, the corrosion resistance of the fastener is enhanced, the service life of the fastener is prolonged, daily maintenance is facilitated, and the replacing frequency is reduced.

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