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Composite wood board

一种复合木板、木材的技术，应用在木材加工器具、其他家里用具、扁平制品等方向，能够解决长加工时间、溶胀和水分吸收增加、内部粘接和弯曲强度降低等问题

Active Publication Date: 2013-06-12
KNAUF INSULATION LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In these resins, although reductions in formaldehyde content have been achieved in recent years, the price paid is longer processing times, reduced internal bonding and bending strength and increased swelling and moisture absorption of sheet products made from them

Method used

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  • Composite wood board
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1a

[0030] Preparation of ammonium polycarboxylate-sugar binders for construction of wood fiberboard compositions

[0031] Aqueous triammonium citrate-dextrose (1:6) binder was prepared by the following general procedure: In a 1 gallon reaction vessel, powdered dextrose monohydrate (915 g) and powdered anhydrous citric acid ( 152.5g), to which 880g of distilled water was added. To this mixture was added 265 g of 19% ammonia water with stirring and stirring continued for several minutes to achieve complete dissolution of the solids. To the resulting solution was added 3.3 g of SILQUEST A-1101 silane to prepare a pH-8-9 solution (using pH paper) containing approximately 50% dissolved glucose monohydrate and dissolved ammonium citrate solids (as a percentage of the total weight of the solution); a 2 g sample of this solution was heat cured at 400°F for 30 minutes and it yielded 30% solids (weight loss due to dehydration during thermoset binder formation). Where silanes other than S...

Embodiment 1b

[0036] The following samples were tested to compare the flexural and tensile strengths of standard particleboard and oriented strand board with similar products prepared using the new experimental binder:

[0037] · Commercially available 1 / 2 inch particle board purchased from Builders Lumber

[0038] · Commercially available 1 / 2 inch oriented strand board (OSB) purchased by Builders Lumber

[0039] · Test wood particle board prepared as above

[0040] 8.75×8.87×0.414371.9gm.44.1lbs 3 12.6% binder

[0041] · Test wood shavings board prepared as above

[0042] 8.37×9×0.336361.2gm.54.4lbs 3 12.6% binder

[0043] The plates tested were each about 8 3 / 4 square inches. The boards from builders are about 2ft x 4ft when purchased. Cut these sheets to approximately 8 3 / 4 square inches so that samples are collected consistently from a variety of products.

[0044] The test results are listed in Table 1-5:

[0045] Results summarized in Table 1

[0046]

[0047] Table 2 D...

Embodiment 2

[0056] Two experimental resins were used, BS1 and BS1-SOK (50% solids content). These two resin systems are used to manufacture particle board (PB), oriented strand board (OSB) and medium density fiberboard (MDF).

[0057] Trial Particleboard Fabrication

[0058] Manufacture single layer particle board. The wood chips used in the manufacture of particleboard are the wood chips used in the manufacture of commercial particle boards which consist of a mixture of wood-like substances and which are believed to consist mainly of reclaimed wood. Sift wood chips before using to remove oversized material and debris. Dry the wood chips to a constant moisture content (MC) before resin treatment. Hereinafter, the moisture content will be expressed as the weight of moisture contained in the wood as a percentage of the weight of the oven-dried wood.

[0059] 12% or 14% resin was added to the wood chips (weight of resin solids relative to weight of dry wood). The resin and wood chips ...

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Abstract

In a stack of composite wood boards, the wood boards comprise wood particles and an organic binder.

Description

technical field [0001] The present invention relates to composite wood boards, such as particle board, oriented strand board and wood fiber board, and in particular to composite wood boards comprising bioresin and / or having low or formaldehyde-free adhesives. Composite wood panels with binder. Background technique [0002] Bioresin is a term coined to describe resins or resin formulations derived from biological sources. Therefore, many traditional resins such as protein-based soy, collagen or casein, or carbohydrate derivatives from cellulose or starch, natural rubber-based binders and natural phenolic binders such as tannins or lignin can All classified as bio-resins. They are renewable polymers with low environmental impact, representing an alternative to existing petroleum-driven systems. [0003] The interest in bioresin systems stems primarily from increasing regulations and public concerns for a pollution-free environment, as well as the need for sustainable altern...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L97/02B27N3/00
CPCC08L97/02B27N3/002C08L2666/02C08L2205/16C08L5/00
Inventor R·杰克逊T·爱恩道尔G·拜布特
Owner KNAUF INSULATION LLC
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