Features of working with epoxy resin-modified softwood

Abstract

The article considers the improvement of methods for modifying wood with epoxy resin, presents the results of experimental studies of epoxy resin-modified pine, larch, and spruce wood on compression along the fibers, assesses the impact of this polymer composition on the strength of wood, and analyzes the features of their work. The physical and mechanical properties of untreated wood are variable and depend on many external factors. To stabilize these indicators, wood modification is used in various ways. Modified wood becomes more resistant to aggressive factors and stronger. Methods of its processing include the use of modifiers of various chemical compositions. The advantages of epoxy resin are considered. The purpose of our research is to improve methods for modifying wood with epoxy resin, conduct experimental studies of epoxy resin-modified pine, larch, and spruce wood on compression along the fibers, and assess the impact of this polymer composition on the strength of wood and the features of its work. Methods of wood modification with epoxy resins have been improved. The methodology of experimental field tests of the studied wood species has been presented. The features and nature of the work of modified and unmodified coniferous wood: pine, larch, spruce have been established. New experimental data have been obtained regarding the strength characteristics of epoxy resin-modified wood samples in compression along the fibers. After conducting field experiments, the strength of modified and unmodified coniferous wood under study was determined. Strength of epoxy resin-modified wood samples: pine – 59.1 MPa, larch – 72.0 MPa, spruce – 54.8 MPa. It was established that the strength of wood after modification by the autoclave method increased for pine wood prisms by 1.29 times, larch by 1.21 times, and spruce by 1.36 times.