Abstract
Natural gas is an important energy in China's production and life. In the environment of advocating low-carbon life, natural gas is an important part of low-carbon energy. But what does not match with the demand is that the development technology of natural gas in China is relatively backward, and the most prominent one is the gas leakage phenomenon of natural gas pipeline. The aging and corrosion of natural gas pipelines often lead to more serious safety problems. At present, the main solution is to coat the natural gas pipeline with anti-corrosion materials, but the effect is not satisfactory because of the uneven quality of the materials. In order to solve this problem, the preparation method of nanocomposite inner coating and its application in natural gas pipeline are studied in this paper. Firstly, this paper focuses on the application of nano materials and nano composite materials in the field of anti-corrosion coating, and analyzes the physical benefits of materials. It is considered that the protective mechanism of the nanocomposite anticorrosive coating is mainly through the adhesion of the coating to the metal substrate, the mechanical isolation of the corrosive medium, the formation of passive protective film and electrochemical protection on the metal surface. In order to further analyze the specific effect of nanocomposite coating, the corresponding experimental model is established in this paper. Many comparative experiments including tensile property analysis, particle size analysis, hydrophobic property and DSC were carried out. It can be seen from the experimental data that the nano composite anti-corrosion coating performs well in the experimental test and has good corrosion resistance, but both the tensile property and hydrophobicity are related to the degree of hard segment. According to the comprehensive analysis, the nanocomposite inner coating is suitable for the weather pipeline, which is recommended to be popularized.
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