Installing insulated coatings is a complex process, which begins with the selection of an appropriate material. Materials that facilitate electrical isolation of at least two electrical parts in different electrical voltages can provide electrical insulation. Insulation coating is also called dielectric coatments. This process should be done after careful study and research, as the quality and performance of different materials would differ.
There are three basic types of insulating materials: Porous carbon (PC), oily oil-based (OI) and stiffener. The main purpose of each one is to change the permeability of their surface. The PC type of coatings is popularly used for conducting both electricity and heat. It can also prevent solvation of moisture and gases.
Another important aspect of an insulating coating system is thermal bridging. Thermal bridging occurs when two or more layers of a conductive material are bonded together. One such layer may be thermal bridging and another may be non-thermal bridging. If thermal bridging occurs between two layers of different materials, the lower layer will prevent the higher layer from being affected by heat and hence provide effective insulation.
There are some other factors to consider while selecting the right coating. The level of creep, abrasion resistance, and chemical resistance is also essential. The material, size, thickness, cost, and installation considerations are some of the factors that need to be considered. Installation considerations include the space required for installation, the frequency of use, and the climatic conditions that are to be faced. Depending on the purpose of the device and the space available, the coating thickness can vary.
The most crucial factor in the selection of a good Insulation coating is to ensure that the end product has excellent chemical and physical properties. A wide range of formulations is available in the market to meet the needs of customers. In addition to the above factors, the material should also have a high level of resistance to corrosion. It is very important to select a coating with a good level of resistance to corrosion because this will help to protect the equipment and the personnel during normal working conditions.
Another important aspect of the application of thermal insulation coating involves the right submersible fluid application technique. The most common techniques used are the cold dip, hot dip, and the wet-dip techniques. Cold dip is mostly used in the application of subsea oil and gas pipelines, where cold temperatures assist in the effective transportation of the crude oil through pipeline systems.
Hot dip is mostly used when a pipeline in the ocean undergoes a hot phase. This process helps in preventing thermal energy loss. Another important method of preventing heat loss in the ocean is by applying a heat reflective foil or an asphalt heat reflective film on the pipes. This process reduces the heat conduction from the pipes inside the pipeline.
Besides keeping heat inside the pipeline, it also helps in keeping heat inside the sea beds. There are different types of Thermal bridging Appends including cui, mastic, and fibreglass. Cui is applied between an exterior membrane that has a thickness of four inches and is applied at a distance of one inch less than the thickness of the membrane. It can prevent heat buildup due to condensation. Mastic, on the other hand, is applied between two different mastic membranes and is applied in an approximate overlapping manner.
The third type of Insulation coating is MTF (multi-layer thickness) that includes the cui, thermal and plastic sheeting. The thermal bridging is done by interlinking the layers using metal flakes. The plastic sheeting, on the other hand, is used for preventing condensation between the external and internal surfaces of the pipeline. This is the most commonly used kind of Insulation Coatings.
When the temperature is very high, the MTF coating applied will be thicker and provide better resistance against thermal movements. A special coating called ASPM (auxiliary metal polyester propylene styrene) is used in the MTF process wherein an aluminum oxide coating is deposited on the surface of the metal pipe or fitting at a thickness of one inch and greater. ASPM coating thicknesses can be adjusted according to the requirements of the application.
Moreover, before an Insulation coating is applied on the exterior, a final polish is applied on the interior side to make sure that the final product is smooth and free from scratches. After the coating is applied on the exterior surface, the interior is then carefully polished and sanded to remove any residual oils. Finally, a clear coating finish is then applied over the finished surface to ensure that the coating has been properly applied and no gaps are present between the two. This process of finishing and polishing will ensure the continuity of thermal benefit throughout the building. Thus, an Insulation coating applied on both the interior and the exterior surface of the pipe or fitting will provide you excellent thermal efficiency and excellent resistance against heat flow.