Glass fiber reinforced laminated veneer lumber and producing method thereof

Abstract

The invention discloses a glass fiber reinforced laminated veneer lumber and a producing method thereof and aims to provide a light high-strength reinforced wood building material which has simple structure and can be processed and produced easily. The material comprises glass fiber products and wood veneers, and the glass fiber products are arranged between two veneers at the bottom layer of the laminated veneer lumber, wherein angular separation formed by the longitudinal and latitudinal fiber of the glass fiber products and the fiber of the veneers ranges from 0 to 90 degrees. The producing method of the glass fiber reinforced laminated veneer lumber comprises the following steps: spreading glue on veneers, wherein the glue selects phenol aldehyde resin, and the single spread is 120-220g / m<2>; assembling blanks along with the grain and adding a glass fiber reinforced layer, and then aging for 10-60 min; and hot-pressing at the temperature of 130DEC G-180 DEG C for 0.7-1.7 min / mm (veneer thickness), wherein the blank compression ratio is 10%-50%. The method can greatly improve the elastic modulus and the bending strength of the laminated veneer lumber.

Description

technical field [0001] The present invention relates to a method for manufacturing building materials, more specifically, it relates to a method for making reinforced building materials with wood and fibers. Background technique [0002] At present, in the field of construction, wood materials are widely used, especially engineered wood composite materials, such as building joists, roof trusses, I-beams and other components, roofs, structural frames and floor systems for family homes. With the rapid development of the national economy, especially with the promotion and development of wooden structure buildings, the contradiction between supply and demand of wooden structural materials will become more and more obvious. Since the implementation of the "Natural Forest Protection Project" in China, measures have been taken to close mountains and cultivate forests throughout the country, and major forest areas have reduced the amount of timber harvested, making the contradiction...

AI Technical Summary

Problems solved by technology

However, due to the pursuit of maximizing benefits, artificial fast-growing forests often grow to a diameter of more than ten centimeters before they are sold. Therefore, they inevitably have problems such as small diameter grades, a large proportion of young timber, and materials that are not as good as natural mature forests. The main performance is timber strength. Low, poor rigidity, soft material, large size variation, so that the processing performance and product quality of wood products and the scope of use in construction engineering structures are affected to a certain extent