CN2595565Y - Poplar wood base composite plate - Google Patents

Abstract

A poplar-based composite board made of poplar as the main raw material, formed by billeting, gluing, and hot-pressing. The veneer is a core board. The greatest advantage of the utility model lies in the designability of its physical and mechanical properties. A series of indicators such as surface properties, static bending strength, elastic modulus, etc., can be realized through the selection and reasonable matching of the number of layers of poplar, plasticized poplar veneer and bamboo, so as to meet the use requirements of the product to the greatest extent. and external environmental requirements, while maximizing the use of different properties of raw materials.

Description

Poplar base composite plate

One, technical field

The utility model belongs to the wood-based plate manufacturing technology field in the wood working industry.

Two, background technology

Along with developing rapidly of the in short supply day by day and wood processing technique of timber resources, the fast-growing material through modification technology, bamboo utilization technology and wooden bamboo manufacture technology of composite material just at home and abroad are surging forward.Rowell as the U.S., R.M. be engaged in the Wooden modifying Study on Technology over many years always, priority is strengthened research etc. to study on the modification and timber that timber not of the same race carries out the dimensional stability aspect, obtained multinomial achievement, on the well-known international publication in " Wood Science " and this areas such as " Wood and Fiber Science ", delivered many pieces of papers, and published a monograph about Wooden modifying.1994, Kumar.S " Wood and FiberScience " (26[2]: delivered the research paper of relevant wood chemistry modified new method 270-280), discussed the mechanism that correlated performance improves behind several important method of wood chemistry modification and the Wooden modifying.With macromolecule resin timber being handled, is most important method during Wooden modifying is handled.As far back as twentieth century mid-term, once widely use in the U.S. and other European countries, product has compressed wood, impreg etc.But product is mainly used in military field; At civil area, because the too high and very difficult large-scale popularization of cost.

Poplar is as a kind of important fast growing wood resource, and the research of its process and utilization technology receives much attention.The fast growing wood performance of holding in Nanjing of China in 1994 with utilize in the international symposium, the expert has delivered the papers of a large amount of relevant poplar processing and utilizations both at home and abroad.Because the density≤0.4g/cm of quick growth poplar wood timber ³, therefore, the relatively poor characteristic of quick growth poplar wood material also becomes participant expert question of common concern.It is an important directions of poplar processing and utilization that modifying cotton wood is handled.

Three, summary of the invention

Purpose of design of the present utility model is to be primary raw material with the poplar, after utilizing the modification technology poplar that material is relatively poor of timber to carry out modification to handle, rationally constitutes a kind of novel high-performance multilayer gummed wood-based panel product.

Technical solution of the present utility model is: board using poplar board is carried out plastics processing, and with the plasticizing board using poplar board make panel, common board using poplar board is that central layer, bamboo chip are enhancement Layer, after assembly, gluing, hot pressing, make the novel poplar base composite plate that density is moderate, intensity is high, rigidity is big, surface abrasion resistance is good, hardness is high and dimensional stability is good, corrosion resistant is rotten.

Four, description of drawings

Fig. 1 is the structural representation of poplar base composite plate.(1) is panel among the figure, and (2) are enhancement Layer, and (3) are central layer.

Five, the specific embodiment

Exemplary embodiments:

Quick growth poplar wood is peeled into the thick veneer of 1～2mm, drying.Be 15～30% pure dissolubility resin impregnating more than 1.5 hours with solid content at normal temperatures and pressures, make the dipping board using poplar board;

With the dipping board using poplar board is panel (1) for each 1 layer, and bamboo chip or bamboo curtain board are enhancement Layer (2) for each 1 layer, and 7 layers of common board using poplar board are central layer (3), hot pressing behind assembly, gluing, and can make with the poplar is the poplar base composite board product of primary raw material.

The basic technical indicator of poplar base composite plate is as follows:

Density≤0.70g/cm ³

Vertical MOR 〉=70MPa

Horizontal MOR 〉=45MPa

Longitudinal modulus of elasticity 〉=8000MPa

Transverse modulus of elasticity 〉=5600MPa

Great advantage of the present utility model is the designability of its physical and mechanical property.As a series of indexs such as surface characteristic, MOR, elastic modelling quantity, all can be by the number of plies of poplar, plasticizing board using poplar board and bamboo wood is selected and rationally mate to realize, thereby satisfy the instructions for use and the external environment requirement of product to greatest extent, can maximally utilise raw-material different performance again simultaneously.Therefore, the utlity model has tangible high-performance, low-cost competition advantage.

Claims (1)

1. one kind is primary raw material with the poplar, and the poplar base composite plate of making after assembly, gluing, hot pressing is characterized in that making panel (1) with the plasticizing board using poplar board, and bamboo chip is enhancement Layer (2), and the common board using poplar board of multilayer is central layer (3).

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