任卫东,刘强,游波.生物基金属保护剂TPA对碳钢包装材料防腐性能影响[J].包装工程,2022,43(23):40-48.
REN Wei-dong,LIU Qiang,YOU Bo.Effects of Bio-based Carbon Steel Protective Agents TPA on Corrosion Resistance of Carbon Steel Packaging Material[J].Packaging Engineering,2022,43(23):40-48. |
| 生物基金属保护剂TPA对碳钢包装材料防腐性能影响 |
| Effects of Bio-based Carbon Steel Protective Agents TPA on Corrosion Resistance of Carbon Steel Packaging Material |
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| DOI：10.19554/j.cnki.1001-3563.2022.23.006 |
| 中文关键词: 生物基金属保护剂 生物酚羟基酸 碳钢包装材料 防腐保护 环境友好型 |
| 英文关键词: bio-based carbon steel protective agent bio-cased phenolic hydroxylacid carbon steel packaging materials anti-corrosion protection environment friendly |
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| 中文摘要: |
| 目的 采用生物基材料，制备金属保护剂对碳钢包装材料进行防腐保护，解决传统金属表面处理方式污染环境和危害人体健康的弊病，获得性能优良的生物基金属保护剂。方法 以植物萃取成分提炼单宁酸、植酸与水共混复配，制备生物基金属保护剂TPA，并对碳钢表面进行涂覆处理，获得钝化膜。通过红外光谱(FTIR)、光学显微镜(OM)、盐雾测试(HSS)、电化学阻抗分析(EIS)等分析手段，考察不同种类、不同复配比例、不同浓度生物基保护剂对金属防腐性能的影响。结果 不同生物酚羟基酸如单宁酸、植酸、没食子酸、酒石酸均对碳钢具有防腐保护功能，其中植酸、单宁酸防腐性能较好。采用植酸与单宁酸共混反应得到的生物基金属保护剂TPA具有最佳的防腐性能。当TPA中植酸与单宁酸的质量比为2∶1、TPA质量分数为3%时，TPA保护剂处理后的钝化膜电化学阻抗模值可达5.02´107Ω∙cm2，远高于单一生物酚羟基酸保护剂的阻抗模值(<104Ω∙cm2)。结论 生物基金属保护剂TPA中的单宁酸与植酸通过氢键作用，形成分子缔合复合保护剂。TPA保护剂能与铁离子作用，形成致密钝化膜，克服了单宁酸钝化膜的应力开裂、植酸钝化膜孔隙疏松等缺陷，显著提升了TPA钝化膜的防腐性能。生物基金属保护剂TPA可用于碳钢类包装材料的防腐保护。 |
| 英文摘要: |
| This work aims to prepare an environmental-friendly bio-based carbon steel protective agent to solve the disadvantages of traditional metal surface treatment method such asenvironmental pollution and damage to human health.Tannic acid, phytic acid, gallic acidand tartaric acid extracted from plants were blended with water to obtain a bio-based carbon steel protective agent TPA with excellent corrosion resistance. The carbon steel surface was coated to obtain the passivation film. Vianecessary analysis methods such as FTIR, OM, HSS, EIS, the effects of different kinds, ratios and concentrations of bio-based protective agents on the corrosion resistance of metals were investigated. Different bio-based phenolic hydroxy acids, such as tannic acid, phytic acid, gallic acid and tartaric acid, had anti-corrosion and protection functions for carbon steel, among which, phytic acid and tannic acid had good corrosion resistance. The bio-based protective agent TPA, which was prepared by blending phytic acid with tannic acid, had the best corrosion resistance. When the ratio of phytic acid and tannic acid and concentration of TPA were turned to be 2∶1 and 3%, respectively, the electrochemical impedance modulus of carbon steel treated by TPA can reach 5.02´107 Ω∙cm2, which was much higher than that of a single bio-cased phenolic hydroxy acidprotective agent (<1.0´104 Ω∙cm2). In conclusion, tannic acid and phytic acid in bio-based carbon steelprotective agent TPA form molecular association composite protective agent through hydrogen bonding. TPA protective agent can react with iron ions to form a dense passivation film, which overcomes the defects of stress cracking of tannic acid passivation film and porosity of phytic acid passivation film, and significantly improves the corrosion resistance of TPA passivation film. The bio-based carbon steel protective agentcan be used for anti-corrosion protection of carbon steel packaging materials |
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