0652 GMT May 25, 2019
Many oil and gas pipelines require repair and maintenance each year necessitating the use of efficient methods. Given the extensive activities in the oil, gas and petrochemical sectors, maintenance of oil and gas pipelines has become one of the main concerns of the oil industry, Mehr News Agency said.
However, many problems, such as high costs and complex operations for installing pipes, are encountered in employing conventional and mechanical methods to replace or weld pipelines.
As a result, the researchers, led by Mohammad Aliabadi Farahani, a faculty member of the Chemistry Engineering Department at Isfahan University of Technology, have designed a formulation and developed a machine to produce composite walls by using nanotechnology and prepreg method. In the study, they used moisture-cure polyurethane resin containing clay and silica nanoparticles.
One of the properties of moisture-cure polyurethane resins is their short curing time which makes it possible for them to be completely cured and turned into hard and solid composite before being installed around the pipes.
The advantages of the project include the integration of two nanocomposite coating processes — one in the factory and one at the repair place, the adequate flexibility of curing method, ease of use and precise control of properties.
This method can be used in oil, gas, petrochemical and military industries.