Influence of weathering conditions on the performance of ceramic and polymeric coatings on wood
Zhgut, Daria (2021)
Diplomityö
2021
School of Energy Systems, Konetekniikka
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Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi-fe2021052731904
https://urn.fi/URN:NBN:fi-fe2021052731904
Tiivistelmä
Nowadays, the application of human-made construction materials leads to a tremendous amount of energy consumption and non-recycled waste generation. The quantity of harmful chemicals and other components used in construction is astonishing and continues to increase constantly. Wood is one of the organic construction materials and the only one considered a renewable one. Therefore, wood becomes a preferable construction material to build safe low-energy structures which do not cause detrimental environmental impact.
However, the building of wooden prefabricated residential units is mainly limited by legislation, standards, and safety requirements. The fact that wood can ‘’breathe’’, absorb, and release moisture makes this material not very durable and, consequently, not always relatively reliable. Therefore, many new different coatings and other technologies developed nowadays to achieve the greater mechanical properties of wood operated under weathering conditions such as moisture, UV irradiation, fungi, et cetera.
The main target of this thesis was to assess and compare the durability of ceramic and polymeric wood coatings, which are developed to enhance wood resistance to ambient conditions and, as a result, prevent wood structure degradation. The artificial accelerated weathering and cycling tests have been carried out to imitate environmental conditions under which the wood should be operated. The tape method was performed to estimate the adhesion properties of the coatings under study. The most favorable conditions for the application of ceramic and polymeric coatings have been revealed, and the potential improvements which can be done in this field of study also have been suggested.
However, the building of wooden prefabricated residential units is mainly limited by legislation, standards, and safety requirements. The fact that wood can ‘’breathe’’, absorb, and release moisture makes this material not very durable and, consequently, not always relatively reliable. Therefore, many new different coatings and other technologies developed nowadays to achieve the greater mechanical properties of wood operated under weathering conditions such as moisture, UV irradiation, fungi, et cetera.
The main target of this thesis was to assess and compare the durability of ceramic and polymeric wood coatings, which are developed to enhance wood resistance to ambient conditions and, as a result, prevent wood structure degradation. The artificial accelerated weathering and cycling tests have been carried out to imitate environmental conditions under which the wood should be operated. The tape method was performed to estimate the adhesion properties of the coatings under study. The most favorable conditions for the application of ceramic and polymeric coatings have been revealed, and the potential improvements which can be done in this field of study also have been suggested.