Abstract

The effect of a series of organosilanes and their mixtures with corrosion inhibitors on the anticorrosion properties of polymer and paint coatings on steel, namely, on the adhesive characteristics of the coatings and corrosion behavior of the metal in the presence of coatings modified with organosilanes, corrosion inhibitors, and their mixtures, is studied. It is shown that mixtures of 1,2,3-benzotriazole (BTA) with vinyltrimethoxysilane (VTMS) or aminoethylaminopropyltrimethoxysilane—diaminosilane (DAS) inhibit the local dissolution and underfilm corrosion of carbon steel, and the potential of local depassivation shifts by 0.3–0.4 V. Here, compact polymer-like layers that are strongly bound to the metal surface are formed on the surface of steel. Corrosion and mechanical tests of the samples of pipe steels with different types of inhibiting compositions are conducted. The effect of the inhibitors on the crack growth under static loading in a model soil electrolyte (pH of 5.5) and on the crack resistance of steel under slow tension in an NS-4 model underfilm electrolyte (pH of 7.0) is evaluated. The tests are performed in media free from and containing hydrogen sulfide. It is shown that the best inhibiting properties are manifested by the mixtures of corrosion inhibitors with organosilanes. Comparative laboratory and bench tests for the adhesive strength, water resistance, and resistance to cathodic detachment of the adhesive junctions obtained upon applying the modified polymer and paint coatings onto the surface of steel are performed. It is found that introducing a mixture of organosilane and a corrosion inhibitor improves the adhesive properties of polymer and paint coatings.

中文翻译：

---

在基于有机硅烷的组合物改性的情况下提高聚合物涂层的防腐性能

摘要

一系列有机硅烷及其与缓蚀剂的混合物对聚合物和钢上涂料的防腐性能的影响，即在存在有机硅烷改性涂料的情况下，对涂料的粘合特性和金属的腐蚀行为，腐蚀的影响研究了抑制剂及其混合物。结果表明，1,2,3-苯并三唑（BTA）与乙烯基三甲氧基硅烷（VTMS）或氨基乙基氨基丙基三甲氧基硅烷-二氨基硅烷（DAS）的混合物会抑制碳钢的局部溶解和膜下腐蚀，并且局部钝化的可能性会发生0.3-0.4的变化V.在钢的表面上形成牢固地结合到金属表面的致密的类聚合物层。对具有不同类型缓蚀成分的管钢样品进行了腐蚀和力学测试。评估了抑制剂对模型土壤电解质（pH为5.5）中静态载荷下的裂纹扩展以及在NS-4模型膜下电解质（pH为7.0）中缓慢拉伸下钢的抗裂性的影响。该测试是在不含硫化氢和不含硫化氢的介质中进行的。结果表明，最佳的缓蚀性能是由缓蚀剂与有机硅烷的混合物表现出来的。进行了对比实验室和实验室测试，测试了在将改性聚合物和油漆涂层涂覆到钢表面后所获得的粘合点的粘合强度，耐水性和耐阴极分离性。