Environment-friendly raw bamboo reinforced light bamboo composite material and processing method thereof

A composite material and processing method technology, used in wood processing appliances, building materials, other household appliances, etc., can solve the problems of high compressive strength, high water absorption thickness expansion rate, small shrinkage, etc. High compressive strength, improve sound absorption and sound insulation performance, and improve the effect of thermal insulation performance

Inactive Publication Date: 2012-08-15
NANJING FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the low longitudinal strength of hollow particleboard and the high water absorption thickness expansion rate in the longitudinal direction, there are certain limitations in the application of longitudinal mechanical properties.
Bamboo is light in body, but its texture is extremely hard, its shrinkage is small, its elasticity and toughness are high, and its compressive strength along the grain is relatively high.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Production of raw bamboo reinforced hollow particleboard bamboo-wood composite materials with a thickness of 33mm and a format of 2000×1250mm

[0022] Raw material preparation: hollow particleboard with a format of 2000×1250mm, a thickness of 33mm, and a hole diameter of 21mm, 3-year-old light bamboo with an outer diameter of 18±1mm, the thickness of the bamboo wall is 4-5mm, the length of the bamboo joints is 100-250mm, polyurethane foam Adhesive, 60-80 purpose poplar wood powder.

[0023] Degreening: Degreening the original bamboo sections with a bamboo degreening machine.

[0024] Drying: Dry the raw bamboo from which the bamboo green has been removed to a moisture content of 12% at a temperature of 100°C.

[0025] Extension: Due to the taper of the original bamboo, the length of the bamboo section is not 2000mm, so it needs to be extended. Apply polyurethane foaming adhesive through the surface of the cork, insert it into the bamboo tubes at both ends to be connec...

Embodiment 2

[0035] A column with a cross-section of 80×104mm.

[0036] It is 33mm that thickness is made according to the method in embodiment 1 earlier, and width is the original bamboo reinforced hollow particle board bamboo-wood composite material of 2000 * 1250mm, then two pieces of bamboo-wood composite material and the 7mm thick phenolic resin plywood that are used for veneer , using resorcinol cold-pressing adhesive to glue the cold-pressed preforms, and then sawing to make a column with a width of 104mm, to obtain a column of 80×104mm. The longitudinal length of the selected hollow particle board can be determined according to the length of the required column, because the hollow particle board is produced by extrusion, and the longitudinal length can be freely selected and customized.

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PUM

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Abstract

The invention discloses an environment-friendly raw bamboo reinforced light bamboo composite material and a processing method of the light bamboo composite material. The bamboo composite material is obtained by mixing a raw bamboo with a wood meal and a reinforced hollow-core particleboard through a polyurethane foamed adhesive. The processing method comprises the steps of removing water from the raw bamboo, drying, prolonging, mixing the adhesive with the wood meal, coating glue, combining, foaming and curing, stacking and trimming. Stand columns are obtained in a way that the bamboo composite materials are compounded by means of transverse cold pressing, then veneered, and finally sawed into required sizes. The light raw bamboo reinforced hollow-core particleboard composite material and the stand columns manufactured by the method are quite high in bending strength, longitudinal compressive strength, utilization rate of bamboo materials, sound-absorbing and sound-insulating performances, and heat preservation and heat insulation, so that the light bamboo composite material can be used as materials of bearing walls or beams and columns of woody buildings.

Description

[0001] technical field [0002] The invention belongs to the field of wood-based panel manufacturing, in particular to an environment-friendly raw bamboo reinforced lightweight bamboo-wood composite material and a processing method thereof. [0003] Background technique [0004] Existing technology: Facing the serious shortage of resources, if forestry and forestry industry want to develop and take the road of sustainable development, they must innovate thinking, adopt a large number of new technologies to develop new materials, replace the demand for wood raw materials, and strive to achieve "ecological protection". , The industry has to develop" goal. The emergence of hollow particleboard will save wood and use alternative raw materials to produce wood-based panels to another level. Hollow particle board is a new type of green man-made board produced by extrusion method. Because of its light weight, high strength, material saving, and can reduce the cost of the board, it...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04C2/24B27N3/02
Inventor 卢晓宁张海洋崔举庆蒋军那斌王志强
Owner NANJING FORESTRY UNIV
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