沿海地区钢结构的腐蚀及防腐涂层

Corrosion of steel structure and anti-corrosion coating in coastal areas

介绍了沿海地区油罐和钢结构的腐蚀现状,并对沿海地区的腐蚀环境进行分析。针对传统沿海户外钢结构溶剂型涂层存在的不利于健康、安全、环保,防渗漏、机械磨损和耐化学品性能差,不具备耐粘污和自清洁性能,户外涂层施工周期长,对施工环境要求高等缺点,研发了一种由无溶剂防腐底漆和纳米无机硅氧烷抗粘污面漆组成的新型涂层配套体系。该体系具有施工简便,配套涂料的密闭性、耐候性、耐盐雾性、耐矿石粉尘冲刷性、耐粘污性、自清洁性好等优点,适用于沿海储罐、埋地管道及钢结构的长效防腐涂装,部分产品已成功应用于舟山国家石油战略储备基地等油罐群的涂装,具有广阔的推广应用前景。

The corrosion status of steel structures and tanks is introduced, and the corrosion environment in coastal areas is analyzed in this paper. In view of the existing disadvantages of the traditional solvent-based coatings outdoors with steel structure served in coastal regions such as harmful elements to health, safety, environmental protection and poor performances of anti-leakage, mechanical abrasion and impact resistance, chemical resistance, as well as poor performances in fouling resistance and self-cleaning properties, unacceptable construction cycle and rigid environmental requirements for construction, a novel coating matching system consisting of solvent-free anti-corrosion primer and nano-inorganic siloxane is studied for purpose. The system has the following advantages in simple construction and better performances in airtight of matching paint, weather resistance, salt spray resistance, mineral dust, erosion resistance, dirt resistance, good self-cleaning. The system is suitable for storage tank, buried pipeline and long-term anti-corrosion coating on steel structure, and has been successfully applied in Zhoushan National Strategic Oil Reserve, which displays a broad application prospect.