Technology for manufacturing structural glued laminated timber by adopting fast-growing poplars

Abstract

The invention provides a technology for manufacturing a structural glued laminated timber by adopting fast-growing poplars. The steps are as follows: firstly, selecting timber and cutting the timber into plates through an electric saw; secondly, coating a transparent water-based prime paint layer and a fire-retardant paint layer on the cut plates, and controlling the water content of the plates to range from 5% to 8% through fumigating; thirdly, planing the fumigated plates, and coating a ultraviolet light polymerization coating varnish layer and a water-based bright surface paint layer on the planed plates in sequence; fourthly, splicing the timber to form an assembly, and sending the assembly into a hot press to press the plates; fifthly, scissoring the pressed plates by using a cutting edge machine, mending, trimming and packing the plates, and then putting the plates into a warehouse. According to the invention, products have excellent corrosion resistance, snow and rain corrosion resistance, and water and oil resistance; the elastic modulus is 10000-12000 GPa, the bending strength reaches 12 MPa, the gloss is larger than or equal to 89, products have no yellow stains under the 100-110 DEG C / 1h condition, the inflaming retarding effect is excellent, and self-extinguish can be performed within 8 s; products are subjected to hard solidification under the irradiation of a high pressure mercury lamp of 500 W for 4-5 min, are ultraviolet light irradiation resistant, can be used widely, and can replace the conventional materials continuously.

Description

technical field [0001] The invention relates to the technical field of plate production, in particular to a process for manufacturing structural laminated wood from fast-growing poplar. Background technique [0002] With the development of social urbanization, technology, and humanization, home design is more and more valued by consumers, followed by the wide application of home materials. Glulam retains the texture of natural wood and has a beautiful appearance. It is superior to solid wood in terms of physical and mechanical properties such as tensile and compressive properties and material quality uniformity, and can be configured according to the strength of the laminate to improve its strength performance. The test shows that its strength performance is 1.5 times that of solid wood, so Glulam has attracted more and more attention from consumers. [0003] Glulam does not change the structure and characteristics of wood, it is still a natural substrate like wood, but fro...

AI Technical Summary

Problems solved by technology

[0005] The invention provides a process for manufacturing structural glulam from fast-growing poplar, which solves the technical problems of poor water resistance, poor corrosion resistance, and inability to ultraviolet light irradiation in the board produced by the existing fast-growing poplar