Research On Dimensional Stability Of Custom-made Closet Solid Wood Composite Door

With the release of market demand,the custom furniture industry will have strong development prospects with strong demand,great potential and broad space.However,the material,shape and process homogenization of the door panel,which represents the beautiful image of the custom wardrobe,are becoming more and more serious.The traditional aluminum frame door,aluminum frame door,wooden frame door,melamine flat door,molded blister door,etc.can not meet people’s aesthetic pursuit.However,the beautifully-structured solid wood doors and solid wood composite doors have not been widely used in custom closets due to the structural instability of the materials themselves and the complexity of the processing technology.In this thesis,the more rigid square steel material is clamped in the keel structure of the framed solid wood composite door,and the stability of the solid wood composite door is improved by assembling the inner and outer keels by dislocation.Comparing the different physical and chemical properties of the new keel structure and the traditional keel structure and the influence of the inner and outer keels on the warpage and flatness by dislocation assembly and assembly,to obtain the keel structure with the square steel and the keel misalignment Solid wood composite door stability impact.The aim is to innovate processes that are more economical,have a more stable composite door structure and are easier to industrially produce.Solve the current problem of the stability of the joint of the wood material itself,and provide new ideas for the development of solid wood composite doors for custom furniture.In this paper,the mechanical properties of square steel and keel structure without square steel are compared in the keel structure of solid wood composite door.The measured impact toughness of square steel in the keel structure is 2.84 J/cm~2.The impact toughness of square steel is 0.4 J/cm~2.In the vertical direction,the static bending strength and elastic modulus of the square steel in the keel structure are 28.2 MPa and 3389 MPa,respectively,which are 4.2 MPa and 506 MPa higher than those without the square steel.In the horizontal direction,the static bending strength and elastic modulus of the square steel in the keel structure are 28.6 MPa and 3579 MPa,respectively,which are 25.3 MPa and 396MPa higher than those without the square steel.In addition,the horizontal and vertical directions of the water swell expansion rate of the square steel in the keel structure are4.95%and 4.89%,respectively,which are 1.01%and 1.02%lower than those of the keel structure.The measurement of mechanical properties shows that the square steel in the solid wood composite door keel structure has better mechanical properties than the traditional keel structure and has higher structural stability.This can be seen from the solid wood composite door warpage and surface flatness test data after 60 days of the simulated home wardrobe door test.One of the keel structures with square steel in the keel structure did not meet the national standards after the test,while the traditional keel structure did not meet the national standards.This indicates that the size of the solid wood composite door with square steel in the keel structure is more stable than the solid wood composite door of the traditional keel structure.In addition,this paper also proposes the misalignment of the inner and outer keels in the keel structure.Moreover,the surface warpage of the square steel and the traditional keel structure,which are misaligned and connected,is measured.The results show that the solid wood composite door with the inner and outer keel misalignment is more stable.