JP2015196363A - Surface treated wood and method for manufacturing the surface treated wood - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the adhesiveness of a wood subjected to fireproof treatment or the adhesiveness of coating.SOLUTION: In a first surface treated wood 50, chemicals 20 in a surface 14 of a wood 10 subjected to fireproof treatment, such as a flame-retardant wood, a semi-fireproof wood, and a fireproof wood, are removed with a liquid, and a surface treatment agent (primer) 60 is coated to form a surface treatment agent layer 62.

Description

  The present invention relates to a surface-treated wood and a method for producing the surface-treated wood.

  Patent Document 1 includes a drying process for drying wood, a decompression process for decompressing wood, a reduced pressure impregnation process for impregnating wood with an incombustible treatment agent under reduced pressure, and an incombustible treatment agent for wood under pressure. A method for producing non-combustible wood, each including a pressure impregnation step for impregnation multiple times, is disclosed.

  Patent Document 2 discloses a method for producing non-combustible wood characterized by impregnating wood with a flame retardant agent and then applying an alkoxy metal salt-based paint to the wood surface.

  Patent Document 3 discloses a technology relating to flame-retardant wood, semi-flame-retardant wood, and fire-retardant wood treated with a flame-retardant agent, semi-incombustible agent, and non-combustible agent.

  Patent Document 4 discloses a fire resistance provided with a surface layer composed of wood substantially free of a flame retardant agent, and a flame retardant agent injection layer in which an inner flame retardant agent adjacent to the surface layer is injected. Techniques relating to laminated timber are disclosed.

JP 2003-221212 A JP 2006-231652 A JP 2012-081603 A JP 2008-031743 A

  Here, incombustible wood such as incombustible wood, semi-incombustible wood, and incombustible wood is inferior in adhesion and paint adhesion compared to non-incombustible wood that has not been treated.

  In view of the above facts, the present invention has a problem of improving the adhesiveness of wood subjected to incombustibility treatment or improving the adhesion of paint.

  In the first aspect of the present invention, the surface treatment agent that removes the chemical on the surface of the wood subjected to incombustibility treatment with a liquid or crosslinks with the wood is applied to the surface.

  In the invention according to claim 1, by removing the chemical on the surface of the wood subjected to incombustibility treatment with a liquid, the anchoring effect or chemical bond between the adhesive or paint and the surface of the wood is promoted, As a result, the adhesiveness of the wood is improved or the adhesion of the coating is improved.

  Alternatively, a surface treatment agent that crosslinks with wood is applied to the surface to form an adhesive surface with improved adhesion and improved paint adhesion, resulting in improved wood adhesion or painting. Adhesion is improved.

  In the invention of claim 2, the chemicals on the surface of the wood subjected to incombustibility treatment are removed with a liquid, and a ground treatment agent that crosslinks the wood is applied.

  In the invention described in claim 2, since the surface treatment agent that crosslinks with the wood is applied to the surface from which the chemical of the wood subjected to the incombustibility treatment is removed with the liquid, the surface area to which the surface treatment agent is crosslinked increases. Compared with the case where the surface treatment agent is applied to the surface from which the chemical is not removed by the liquid, the adhesion of wood is improved or the adhesion of the coating is improved.

  The invention of claim 3 comprises a removing step of removing the chemical on the surface of the wood subjected to incombustibility treatment with a liquid, or a coating step of applying a ground treatment agent that crosslinks the wood to the surface.

  In the invention according to claim 3, by removing the chemical on the surface of the wood subjected to incombustibility with a liquid, the anchoring effect or chemical bond between the adhesive or paint and the surface of the wood is promoted. As a result, the adhesion of wood is improved or the adhesion of paint is improved.

  Alternatively, a surface treatment agent that crosslinks with wood is applied to the surface to form an adhesive surface with improved adhesion and improved paint adhesion, resulting in improved wood adhesion or paint adhesion. Improves.

  The invention of claim 4 includes a removal step of removing the chemical on the surface of the wood subjected to incombustibility treatment with a liquid, and an application step of applying a ground treatment agent that crosslinks the wood after the removal step to the surface. I have.

  In the invention according to claim 4, since the surface treatment agent that crosslinks the base treatment agent is increased by applying the base treatment agent that crosslinks with the wood to the surface from which the chemical on the surface of the wood subjected to incombustibility treatment has been removed with a liquid, Compared with the case where the surface treatment agent is applied to the surface from which the chemical is not removed with the liquid, the adhesion of wood is improved or the adhesion of the coating is improved.

  According to a fifth aspect of the present invention, the removing step includes an immersing step of immersing the wood in the liquid for a predetermined time, a wiping step of wiping the surface of the wood with a wet member moistened with the liquid, and the liquid. A combination of one or more of a covering step of covering the surface of the wood with a wetted wet member for a predetermined time and a flowing step of flowing the liquid on the wood for a predetermined time. is there.

  In the invention according to the fifth aspect, the drug is effectively removed with the liquid in a simple manner.

  Here, there are three ranks of non-combustible materials, quasi-incombustible materials, and flame retardant materials as building materials that meet the technical standards stipulated by the Cabinet Order with respect to non-combustible performance. The above-mentioned “incombustible wood” includes any of these incombustible materials, semi-incombustible materials, and flame retardant materials. In addition, “incombustible treatment” refers to all treatments that improve the incombustible performance by impregnating wood with chemicals, etc., and “incombustible treated wood” includes incombustible wood, semi-incombustible wood, and Includes non-flammable wood. If it demonstrates from another viewpoint, what is necessary is just the wood in which the process which a nonflammable performance improves using a chemical | medical agent was performed.

  ADVANTAGE OF THE INVENTION According to this invention, the adhesiveness of the incombustible process wood improves or the adhesiveness of coating improves.

It is sectional drawing which shows typically the state which apply | coated the adhesive agent to the 1st surface treatment wood. It is sectional drawing which shows typically the wood incombustible processing. It is sectional drawing which shows a 2nd surface treatment wood typically. It is a perspective view explaining an immersion process. It is a perspective view explaining a wiping process. It is a perspective view explaining a covering process. It is a perspective view explaining a wake process. It is a perspective view explaining an application | coating process. It is sectional drawing which shows typically the state which apply | coated the adhesive agent to the 2nd surface treatment material. It is sectional drawing which shows typically the state which apply | coated the adhesive agent to the 3rd surface treatment wood. It is a graph for demonstrating the result of the confirmation experiment of the adhesive improvement effect.

<Embodiment>
The surface-treated wood according to one embodiment of the present invention will be described.

  The first surface-treated wood 50 of this embodiment shown in FIG. 1 is a chemical 20 (see FIG. 2) on the surface 14 of the wood 10 subjected to incombustible treatment such as flame-retardant wood, semi-incombustible wood, and incombustible wood. ) Is removed with a liquid, and a base treatment agent layer (primer) 60 is applied to form a base treatment agent layer 62 to be an adhesive surface 62A. The second surface-treated wood 40 in the figure will be described later.

[wood]
The incombustible treated wood 10 of this embodiment will be described.

  There are three ranks of building materials that meet the technical standards stipulated by government ordinance regarding non-combustible performance: non-combustible materials, semi-incombustible materials, and flame-retardant materials. The “incombustible treated wood 10” of the present embodiment includes any of these incombustible materials, semi-incombustible materials, and flame retardant materials. The term “incombustible treatment” refers to all treatments that improve the incombustibility performance by impregnating wood with a chemical agent, and the wood 10 of the present embodiment includes materials other than incombustible materials, semi-incombustible materials, and incombustible materials. Wood is also included. That is, the wood 10 of the present embodiment includes wood having a lower incombustibility than these and wood having a higher incombustibility than these. If it demonstrates from another viewpoint, what is necessary is just the wood in which the process which a nonflammable performance improves using a chemical | medical agent was performed.

  As a method of impregnating (injecting) the medicine 20 into the wood 10, a well-known impregnation technique can be used. For example, an immersion method, a spray method, a reduced pressure / pressurized treatment method, a passive reduced pressure drug injection method, and the like can be used.

  As the chemical | medical agent 20, a well-known flame-retardant processing agent and an incombustible processing agent can be used. Specifically, water-soluble inorganic compounds such as boric acid and borax, chemicals containing silicic acid and phosphoric acid, phosphorus-based, nitrogen-based, boron- and halogen-based fireproofing agents can be used.

  As shown in FIG. 2, the incombustible wood 10 is in a state where the temporary conduit 16 is filled with the medicine 20. Further, a concave portion 17 is formed on the surface 14 by the temporary conduit 16, and the concave portion 17 is filled with the medicine 20.

[Removal processing]
Next, a method for removing the medicine 20 on the surface 14 of the wood 10 with the liquid M will be described.

The liquid M of this embodiment is water (H ₂ O). It is not necessary to use pure water, and an aqueous solution may be used. For example, it may be an acidic or alkaline aqueous solution or a cleaning liquid containing a surfactant or the like. Furthermore, it may be a liquid other than water, for example, an organic solvent. The liquid M may be appropriately selected according to the type of the medicine 20.

  In addition, any one of the four immersion processes, the wiping process, the covering process, and the flowing process described below may be performed, or a plurality of them may be combined. Moreover, you may remove the chemical | medical agent 20 with a liquid by the removal processing methods other than these four.

  And it will be in the state from which the chemical | medical agent 20 of the surface 14 of the timber 10 was removed by performing the removal process with respect to the timber 10, as shown in FIG. The wood in the state shown in FIG.

(Immersion treatment)
As shown in FIG. 4, the wood 10 is taken out of the liquid (water) M in the water tank 100 by immersing it in a predetermined time (for example, 1 hour).

(Wiping process)
As shown in FIG. 5, the surface 14 of the wood 10 is wiped with a wet member 110 such as a cloth or sponge dampened with liquid (water) M.

(Coating treatment)
As shown in FIG. 6, the surface 14 of the wood 10 is covered with a wet member 120 such as a cloth or sponge moistened with a liquid (water) M for a predetermined time (for example, 1 hour) and taken out.

(Overflow processing)
As shown in FIG. 7, the liquid (water) M is poured over the surface 14 of the wood 10 for a predetermined time (for example, 1 hour).

[Coating (base treatment)]
3 is applied to the surface 14 of the second surface-treated wood 40 with a surface treatment agent (primer) 60 (see FIG. 1) to form a surface treatment agent layer 62 that becomes the adhesive surface 62A. (Background treatment) will be described.

  In the present embodiment, the base treatment agent (primer) 60 is a liquid containing a silane coupling agent, and chemically reacts with the wood 12 (fiber (main component cellulose)) of the wood 10 to crosslink.

  Note that a base treatment agent (primer) 60 other than a liquid containing a silane coupling agent may be used. In short, it is sufficient that a substance that chemically reacts with and crosslinks the woody material 12 (fiber (main component cellulose)) of the wood 10 is included. Just choose.

  As shown in FIG. 8, a surface treatment agent (primer) 60 is applied to the surface 14 of the removed second surface-treated wood 40 with a brush 130. The method of applying the ground treatment agent (primer) 60 may be a method other than applying with the brush 130. For example, the ground treatment agent 60 may be sprayed on the surface 14 of the second surface-treated wood 40.

  Moreover, the wood by which the surface treatment agent (primer) 60 was applied to the surface 14 of the 2nd surface treatment wood 40 with the brush 130, and the surface treatment agent layer 62 used as the adhesion surface 62A was formed is made into the 1st surface treatment wood 50 ( (See FIG. 1).

<Action and effect>
Next, functions and effects of the present embodiment will be described.

  As shown in FIG. 2, the incombustible wood 10 is in a state in which the recess 20 formed by the temporary conduit 16 is filled with the drug 20, and the drug 20 is exposed on the surface 14.

  As shown in FIG. 3, the medicine 20 on the surface 14 of the wood 10 is removed with a liquid (water) M (see FIGS. 4 to 7) to fill the recess 17 formed by the temporary conduit 16. The drug 20 is removed.

  As shown in FIG. 8, a surface treatment agent 60, which is a surface treatment agent (primer), is applied to the surface 14 of the second surface-treated wood 40 from which the medicine 20 has been removed. As a result, as shown in FIG. 1, a surface treatment agent layer 62 composed of the surface treatment agent 60 is formed on the surface 14. The ground treatment agent 60 chemically cross-links with the woody 12 (fiber (main component cellulose)).

  Moreover, since the chemical | medical agent 20 is removed from the recessed part 17 of the surface 14 of the 2nd surface treatment wood 40, the surface treatment agent 60 is filled into the recessed part 17, and the area which the ground treatment agent 60 bridge | crosslinks increases.

  And since the surface treatment agent layer 62 of the first surface-treated wood 50 shown in FIG. 1, that is, the surface treatment agent 60, has a stronger chemical bond with the adhesive 70 than the wood 12, the adhesion is improved. That is, by applying the base treatment agent 60, an adhesive surface 62A with improved adhesiveness is formed, and as a result, the adhesiveness of the adhesive 70 is improved.

[Other surface-treated wood]
Here, although both the removal process of the chemical | medical agent 20 and the application | coating process (base treatment) of the base-treatment agent 60 were performed for the 1st surface treatment wood 50, only any one may be sufficient. Therefore, the case where only one of these processes is performed will be described next.

  The second surface-treated wood 40 that has been subjected only to the removal treatment of the drug 20 shown in FIG. 9 is promoted by chemical bonding by increasing the contact area with the adhesive 70 with the surface 14 from which the drug 20 has been removed, Adhesiveness is improved by the anchoring effect caused by filling the concave portion 17 with the adhesive 70.

  When the third surface-treated wood 45 that has been subjected only to the coating treatment (primary treatment) shown in FIG. 10 is cross-linked by chemically reacting with the woody surface 14 between the recess 17 and the recess 17 filled with the drug 20. Conceivable. In addition, when the medicine 20 is applied with the brush 130 (see FIG. 8), it is considered that the medicine 20 may be removed from some of the recesses 17. And since the surface treatment agent 60 is filled in the recessed part 17 from which the chemical | medical agent 20 was removed, the area which the surface treatment agent 60 bridge | crosslinks increases.

  Therefore, the third surface-treated wood 45 having the surface treatment agent layer 62 (base treatment agent 60) formed by performing the coating treatment (base treatment) without performing the removal treatment is the first surface-treated wood shown in FIG. As with 50, adhesion is improved.

[Confirmation test of adhesion improvement effect]
Next, an experiment for confirming the effect of improving the adhesiveness by the “removal process of the medicine 20” and the “application process (base process) of the base treatment agent 60” and the results thereof will be described.

(Outline of experimental method)
The test according to the block shear test was carried out from the Japanese Agricultural Standard of Glulam.

Specimens for block shear test are:
A (◯): no removal treatment, no application treatment B (□): removal treatment present, no application treatment: second surface-treated wood 40
C (●): no removal treatment, application treatment: third surface-treated wood 45
D (■): removal treatment present, coating treatment present: first surface-treated wood 50
It was.
A, B, C, and D were prepared by preparing a plurality of test bodies.

  The removal process was performed by wiping the surface 14 of the wood 10 with a wet member 110 such as a cloth or sponge dampened with the liquid (water) M shown in FIG.

  In the coating process (base treatment) shown in FIG. 8, the base treatment agent 60 was applied with a brush 130 to both test specimens to be bonded.

  The adhesion treatment was performed by applying and compressing adhesive 70 (see FIG. 1 and the like) to both test specimens to be adhered, and applying a compression force for a certain period of time.

  After completion of pressing, the block shear test was performed after curing for 24 ± 2 hours in an environment of 20 ° C. and 60% RH.

(Experimental result)
FIG. 11 is a plot of the average value of the maximum shear stress in each of the specimens A, B, C, and D. From FIG. 11, the magnitude of the maximum shear stress is in the order of A <B <C <D. That is, the adhesive force increases in the order of A <B <C <D.

  That is, it was confirmed that the “adhesion improving effect” by the “removal process of the chemical 20” and the “application process of the base treatment agent 60 (base process)”. Further, only one of the “removing process of the treating agent 20” and the “coating process (priming process) of the base treating agent 60” was confirmed to improve the adhesiveness.

<Application example>
As application examples in which the first surface-treated wood 50, the second surface-treated wood 40, and the third surface-treated wood 45 to which the present invention is applied are bonded and used, the first surface-treated wood 50 and the second surface-treated wood 40 are used. In addition, a fire-resistant wood member such as a fire-resistant laminated material or a single-plate laminated material (LVL) in which the third surface-treated woods 45 are bonded or bonded to other woods.

  In addition, what is necessary is just to select suitably the adhesive agent to be used according to the chemical | medical agent 20, the base-treatment agent 60, the kind of woody material 12 of the timber 10, etc. For example, a thermosetting adhesive such as a resorcinol-based resin adhesive or a melamine resin adhesive can be used.

<Others>
The present invention is not limited to the above embodiment.

  The first surface-treated wood 50, the second surface-treated wood 40, and the third surface-treated wood 45 are adhesively bonded, but are not limited thereto. Even when the paint is applied to the first surface-treated wood 50, the second surface-treated wood 40, and the third surface-treated wood 45, the adhesion of the paint to the wood is improved for the same reason as the adhesive 70. Therefore, the paint is difficult to peel off, and the adhesion and durability of the paint are improved. The base treatment agent 60 may be appropriately selected according to the paint to be applied.

  Needless to say, the present invention can be implemented in various modes without departing from the scope of the present invention.

DESCRIPTION OF SYMBOLS 10 Wood incombustible processing 14 Surface 20 Chemical | medical agent 40 Second surface treatment wood 45 Third surface treatment wood 50 First surface treatment wood 60 Ground treatment agent 62 Ground treatment agent layer 62A Adhesive surface 70 Adhesive 120 Wetting member 110 Wetting member
M liquid

Claims (5)

  A surface-treated wood in which a chemical on the surface of incombustible wood is removed with a liquid, or a surface treatment agent that crosslinks with the wood is applied to the surface.   A surface-treated wood in which a chemical on the surface of wood subjected to incombustibility treatment is removed with a liquid, and a base treatment agent for crosslinking with the wood is applied.   A method for producing surface-treated wood, comprising a removal step of removing a chemical on the surface of wood subjected to incombustibility treatment with a liquid, or a coating step of applying a base treatment agent that crosslinks the wood to the surface. A removal step of removing the chemicals on the surface of the incombustible wood with a liquid;
An application step of applying to the surface a surface treatment agent that crosslinks the wood after the removal step;
A method for producing surface-treated wood. The removal step includes
An immersion step of immersing the wood in the liquid for a predetermined time;
A wiping step of wiping the surface of the wood with a wet member moistened with the liquid;
A coating step of coating the surface of the wood with a wet member moistened with the liquid for a predetermined time;
A flowing step of flowing the liquid over the wood for a predetermined time;
A process combining one or more of
The manufacturing method of the surface treatment wood of Claim 3 or Claim 4.