Widely used in civil construction, thermal insulation is the group of materials or structures that hinder heat dissipation due to thermal resistance. In this sense, they establish a barrier in the passage of heat between two means that would naturally tend to equal their temperatures.
In general, there are no materials that are perfectly isolated and completely prevent heat exchange. However, there are materials that greatly delay this exchange, considered the best thermal insulation. Among them, we can mention saboutsopor, cork, glass and glass wool.
There are several solid materials that can be good electrical dosols, what will define this is the temperature, the usefulness given and the installation site. Keep following Polyexcel’s blog to know examples of thermal insulation.
Types of thermal insulators
As we said earlier, there are several materials that can be used to make electrical insulation. Although each structure always takes for some heat, they help to increase the protection of drivers, avoiding possible accidents. Below are the main examples of thermal insulators.
Cork is one of the oldest insulation. It is usually used in the form of agglomerates, forming panels. The greatest advantage of this structure is the thermal inertia it presents.
Imputable and incombustible, rock wool differs from other insulators because it is fire resistant, with a melting point greater than 2192 °F. The main applications of it are the insulation of liners, ventilated facades, previous distributions and much more.
This structure is commercialized in rigid or semi-rigid panels, felts, blankets, agglomerates with resins and coquinhas to isolate circular section pipes. It is worth remembering that it is also an excellent option for soundproofing on ceilings and interior walls.
Similar to rock wool, glass wool has silica and sodium (sand and glass), which are melted at high temperature and centrifuged (3272 °F). This joint forms fine yarns, which are later added with synthetic resin.
Like previous thermal insulating materials, this option is found in the form of blankets, agglomerated panels and pipe insulators. In addition, it may present versions with higher density, hydrofugue and hygroscopic.
Expanded polystyrene (EPS)
Among the main examples of conductors and thermal insulators is expanded polystyrene, a material derived from oil and natural gas. Through it is obtained the plastic polymer of styrene in the form of granules.
Due to its combustibility flame retardants are added in the composition, making polystyrene a compound hardly flammable. But it does not stop there, since when in liquid state it has high resistance to water absorption.
Polypropylene foam is hydro-water-effective, and has medium-character thermal yield. Finished in white or close to aluminum, it has a coefficient of thermal conductivity between 0.036 and 0.046 W/mºC. In addition, it can be sold in the form of sheets, blocks and tubes.
Although similar to the previous foam, the polypropylene version offers chemical characteristics of higher thermal resistance, being useful in the insulation of steel pipes in industrial processes. Its commercialization is presented in the same way as polyethylene.
Polyexcel: excellence in polymeric compounds
Considered one of the largest producers of polymeric compounds for wires and power and telecommunications cables, Polyexcel is always looking for products with high quality. For this, it has a laboratory full of unique equipment in the national territory.
Founded in 2011 with the objective of producing XLPE compounds, one of the company’s flagships, Polyexcel has expanded its catalog with several high-performance electrical dosols. An example of this is HFFR, a compound that in addition to flame retardant, is halogen-free and has low smoke emissions.
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