JPH03112604A - Woody interior trimming material - Google Patents

Abstract

PURPOSE:To manufacture an interior trimming material, hard to burn, hard to be marked, without generating color change or corrosion and with rich woody feeling by using an interior trimming material wherein a timber is used at least for a section to be exposed to the surface, and a modified timber including insoluble non-combustible inorganic substance inside is used at least for a surface layer section of a timber section. CONSTITUTION:A woody interior trimming material 1 is composed of a veneer 11 of a modified timber including an insoluble non-combustible inorganic substance inside bonded on one surface of a base 12. As for the insoluble non-combustible inorganic substance to be composed in a timber and dispersed and fixed in the timber organization, various kinds of salts, for instance, such as borate, phosphate, hydrogen phosphate, carbonate, sulfate, hydrogen sulfate, silicate, nitrate and hydoxide are used. Thus, a woody interior trimming material of superior resistance to corrosion, mothproof properties, dimension stability, dynamic strength, nonflammability and the like can be manufactured by using the modified timber including the insoluble non-combustible inorganic substance inside partially or fully.

Description

[Detailed description of the invention] [Industrial application field] This invention is applicable to general houses, apartment complexes, public facilities, etc.
This article relates to wooden interior materials used in living spaces, etc.

[Conventional technology]

Traditionally, tiles,
Various materials are used, such as bricks, ALC panels, metals, glass, inorganic materials, and plastics. These various materials are used not only for wall materials but also for ceilings, under-eaves ceiling materials, and the like.

However, today, people are generally reconsidering the feel of wood, such as the softness and warmth unique to wood, and the need for wood-based interior materials is also expanding.

[Problem to be solved by the invention]

However, since wood is easily flammable, there is a major problem with wood interior materials, in that they are required to have improved fireproofing and fire resistance in order to prevent fires from breaking out and spreading indoors. In addition, although it has a woody texture, it is susceptible to rot when used in hot and humid environments, causing problems such as discoloration and mold growth shortly after use.

However, wood (WPC) is also used that is impregnated with resin or the like to prevent moisture from entering and make it resistant to rot, but this material actually impairs the woody feel. Needless to say, it is also desired that the material has sufficient insect repellency, dimensional stability, mechanical strength, surface hardness, etc.

In view of the above circumstances, the present invention has excellent antiseptic and insect repellent properties, dimensional stability, mechanical strength, surface hardness, tii flammability (fire retardant), etc., is hard to burn, is safe, is resistant to scratches, and is Our goal is to provide an interior material with a rich wood feel that does not discolor or rot over time. The inventors discovered the effectiveness of using modified wood containing organic inorganic substances and completed this invention.

That is, the present invention is an interior material in which at least the surface portion is made of wood, and the wood forming at least the surface layer of the wood portion is a modified wood containing an insoluble non-combustible inorganic substance inside. .

The method for producing the modified wood used in the wooden interior material according to the present invention is not particularly limited, but the method described below is preferred.

There are no particular limitations on the raw material wood for the above-mentioned modified wood.
Examples include raw wood logs, sawn timber products, sliced veneers, and plywood. There are no limitations on the tree species, etc.

In addition, the insoluble, nonflammable inorganic substances (insoluble products) that are generated in wood and dispersed and fixed in the wood structure are not particularly limited, but include, for example, borates, phosphates, hydrogen phosphates, carbonates, etc. salts, sulfates, hydrogen sulfates, silicates,
Examples include various salts such as nitrates and hydroxides. Among these salts, for example, specific examples of carbonates include p)
a COl, CaCot, FeCox, MgC
O3, MnCO5, N i COs, Z n Cot
etc. Two or more of these may coexist in the wood. The insoluble, nonflammable inorganic substance within the wood may be fixed in the form of a reaction with wood cellulose.

Note that one type of insoluble nonflammable inorganic substance may contain 2 fiii or more of each of the cation and/or anion moieties described below.

In order to generate the above-mentioned insoluble non-combustible inorganic substance in the wood tissue, an aqueous solution prepared with a group of inorganic compounds constituting the cationic part of the insoluble non-combustible inorganic substance, that is, a cation-containing treatment liquid, and an anionic part constituting the insoluble non-combustible inorganic substance are used. An aqueous solution prepared with another group of inorganic compounds, that is, an anion-containing treatment solution, is separately and sequentially impregnated into the wood structure. The cation-containing treatment liquid and the anion-containing treatment liquid can be impregnated alternately once or multiple times. When impregnating multiple times, the impregnation may be performed not alternately but continuously.

The cation moiety of the insoluble nonflammable inorganic substance includes, for example, alkali metals such as Na and C;
Alkaline earth metals such as a, Ba, Mg, Sr, Mn,
Transition elements such as Ni and Cd, carbon group elements such as Si and Pb,
Examples include Zn and Af. Among these, Ca
, Ba, MgZn and A6 are preferred.

The anion portion of the insoluble nonflammable inorganic substance includes, for example, B, O, and BO.

,PO4,Co, ,SO2,No, ,OH,CI,
Examples include Br, F, ■ and OH. Among these, Bog, PO,, COI, SO2 and OH
Anions are preferred. Furthermore, among the anions, B
, Ot, BO, and PO, are flame retardant effects due to promotion of carbonization, CO is flame retardant effects due to the generation of nonflammable gas, and halogens such as C2, F, and Br are flame retardant effects due to the chain reaction in flaming combustion. Flame retardant effects can be expected due to inhibition and generation of nonflammable gas, respectively. In addition, CI! ,F,Br
Although it has an excellent flame retardant effect, it generates a large amount of smoke, so care must be taken when using it.

The above cations and anions are arbitrarily selected depending on the composition of the desired insoluble, nonflammable inorganic substance to be produced in the wood, and by dissolving the water-soluble inorganic substances containing each of these ions in water separately, the desired A cation-containing treatment liquid containing cations and an anion-containing treatment liquid containing desired anions are prepared. However, since not all combinations of cations and anions are possible, it is preferable to select an appropriate combination that can be used, taking into consideration constraints such as the ionic radius.

Examples of inorganic substances that dissolve in water to produce the above-mentioned desired cations include MgC1, MgBrz, MgSO4.H,0
1Mg (No, ), 6H,01CaC (B,
CaBrz , Ca (NOs)z , Ba(,j!
・2H1O1B a B rZ , B a (Not
)z, AI(:, 1., AI!Brs, A7!!
(SO4)! , A4 (NO, L ・9 H, Ol
Examples include, but are not limited to, Z n Clz and the like. However, drugs other than halides have low solubility (and are difficult to obtain the required concentration), but halides are preferable because they have high solubility and are easy to obtain the required concentration.They dissolve in water and produce the desired anion. Examples of the inorganic substances produced include l'J a 2 COx, (
NHJx Cot, H2SO4, Nag SO4, (
NH4)t SO4, Hs PO2, Nag HPO4
, (NH4)=HPO4, H-BO,, Na BO2
, NH4BO, and the like, but the present invention is not limited thereto. Each of the above water-soluble inorganic substances may be used alone, or a plurality of types may be used in combination in one treatment liquid within the range where a uniform aqueous solution can be formed without reacting with each other.

The inorganic substance impregnation treatment of the raw material wood using the above-mentioned cation-containing treatment liquid and anion-containing treatment liquid is performed, for example, as follows.

First, add one of the two treatment solutions (first solution) and add the above raw material wood to the same treatment solution. 'x? Impregnate it into the wood by subjecting it to H. After impregnation with this first liquid, treatment containing ions of the other party that reacts with the first liquid / & (second liquid)
is impregnated in the same manner to produce insoluble, non-combustible inorganic substances inside the wood.

Next, after the two liquids, the anion-containing treatment liquid and the cation-containing treatment liquid, are impregnated as described above, if necessary, a third liquid, a fourth liquid, etc. are prepared and repeated. The product layer may be densified by impregnation.

The cation/anion-containing side treatment liquids used at this time may be of the same type or different types, and their concentration is not particularly limited.

The impregnation treatment method for the can liquid, the impregnation treatment time, etc. are not particularly limited, and impregnation can be carried out under reduced pressure or by coating.

In addition, prior to the impregnation treatment with the first liquid, it is recommended that the raw material wood be subjected to a water saturation treatment so that the wood is sufficiently saturated with water. This is because the ions contained in the first liquid can be rapidly diffused using the water in the wood as a medium, and the processing time can be shortened. The water saturation treatment method is not particularly limited, but may be carried out by submerged wood storage, steaming, impregnation under reduced pressure, impregnation with a pressurizer, or the like. In addition, the first
When the liquid is impregnated under reduced pressure, it is not necessarily necessary to carry out this water saturation treatment.

After the impregnation treatment, curing can be performed as necessary to promote the production reaction of insoluble and nonflammable inorganic substances.

After the insoluble, nonflammable inorganic substance is generated and fixed in the wood by the above impregnation treatment, the surface of the wood is washed with water, if necessary, and dried to obtain a modified wood.

The ratio of the weight of the bath used for the water saturation treatment, impregnation treatment, etc. to the amount of wood is not particularly limited, but for example, the amount of the bath is about 10 times the weight of the untreated wood.

Through each of the above treatments, it is possible to efficiently obtain modified wood that is highly superior in antiseptic and insect repellent properties, dimensional stability, etc., and has external combustibility. Since the obtained modified wood has inorganic substances impregnated and fixed inside the wood, the wood texture is not impaired, and the wood has excellent appearance as well as the above-mentioned performance.

By using the thus-obtained modified wood containing an insoluble non-combustible inorganic material in part or in whole, it is possible to improve the antiseptic and insect repellent properties, dimensional stability, mechanical strength, and flame retardancy ( It is possible to obtain a wooden interior material with excellent fire retardant properties.

FIG. 1 shows one embodiment of the wooden interior material according to the present invention. As shown in this figure, this wooden interior material l is made by adhering a modified wood veneer 11 containing an insoluble and nonflammable inorganic substance to one surface of a base material 12. 1
1 is displayed indoors. The shape, processing method, material of the base material 12, etc. are not particularly limited, and can be combined depending on the required performance.

Note that it goes without saying that the present invention is not limited to the above embodiments.

The wooden interior material according to the present invention has
This is an interior material in which at least the portion that appears on the surface is made of wood, and the species of the wood is not limited at all. In addition, all of the wood parts do not need to be modified wood containing insoluble non-flammable inorganic substances inside, but as long as the wood constituting at least the surface layer of the wood parts is modified wood containing insoluble non-flammable inorganic substances inside. For interior materials, for example, thick solid boards made of the above-mentioned modified wood may be used, as well as plywood made by laminating and bonding thin veneers made of modified wood (such as rotary veneers) as the outermost layer. etc. can also be used. In that case, untreated wood (species, thickness, etc. are arbitrary) that does not contain insoluble, nonflammable inorganic substances, conventional modified wood such as WPC, etc. can be used inside the plywood. Of course, in the case of plywood, modified wood containing insoluble, non-combustible inorganic materials can also be used for all the veneers. Furthermore, in the wooden interior material according to the present invention, the surface of the modified wood, which is the surface layer, has a decorative layer that does not contain any insoluble, non-combustible inorganic substances inside and has a thickness that is considered not to reduce the fire resistance. The plates may be bonded or laminated. At that time, the thickness of the decorative veneer is 0.3 to 1.

It is desirable that the amount is about 0 ■l.

The construction mode of the wooden interior material according to the present invention obtained as described above is not particularly limited, and for example, it can be used for walls, floors, ceiling members of general houses, partitions, partitions, fireproof panels, etc. In addition to living spaces, it can also be used for the interior of passenger vehicles.

[For production]

The modified wood used in the wood interior material of this invention is one in which the voids such as conduits inside the wood, the internal cavities, and the wood cell walls are filled with insoluble, nonflammable, hard inorganic substances. It has characteristics.

First, water resistance is improved because the voids are eliminated, preventing water from penetrating into the wood.

Second, the interior of the wood cell walls is occupied by the filler, producing a bulk effect, which makes it difficult for the wood itself to expand or contract. As a result, dimensional stability is improved and various mechanical strengths are also excellent.

Thirdly, the wood cells are reinforced, which increases the surface hardness, among other things.

Fourth, this insoluble, non-combustible inorganic material that fills the internal cavity of the wood does not provide nutrients for fungi and living things, so it prevents fungi and insects from entering the wood, and it has antiseptic and insect repellent properties. improve.

Furthermore, in addition to the fact that non-combustible inorganic substances are combined with wood (fff by inorganic substances), depending on the type of inorganic substance, the effect of improving flame retardancy can be obtained, so that wood is highly flame-retardant. That's it.

Here, once the insoluble and nonflammable inorganic substances are fixed in the wood structure, there is little possibility that they will be dissolved out of the wood thereafter, so there is little worry that their effects will be diminished.

Moreover, since this modified wood contains inorganic substances only inside it, the woody appearance is not impaired.

In the wooden interior material according to the present invention, at least the surface portion is made of wood, and the wood constituting at least the surface layer of the wood portion is modified to have the above-mentioned properties and contains an insoluble, non-combustible inorganic substance inside. It is wood. Therefore, the wooden interior material according to the present invention has excellent antiseptic and insect repellent properties, dimensional stability, mechanical strength, surface hardness, flame retardancy (fire retardancy), etc. There is no change (blackness), and the interior material has a woody feel, is flammable, safe, and scratch-resistant.

〔Example〕

Specific examples and comparative examples of the present invention are shown below, but the present invention is not limited to the following examples.

Example 1 - Raw cypress wood (300uX 2100mmx 15mm
) was immersed in a water tank for 7 days to saturate it with water.

Thereafter, this plate material was immersed for 48 hours in a calcium chloride aqueous solution (concentration 3 mol/water 11; first solution) at 60°C, and then 60°C aqueous disodium hydrogen phosphate solution (concentration 4 mol/water 11; 2nd liquid) for 48 hours. Thereafter, the treated wood was washed in running water for about half a day, air-dried in the shade, and then dried in a dryer at 60°C.

A wood interior material was produced by cutting and processing the modified wood obtained as described above into a predetermined size.

Example 2 A modified wood was produced in the same manner as in Example 1, except that a 3 cm thick rotary veneer of cypress was used as the raw material wood. However, since the thickness was small, the immersion treatment time was shortened to 4 hours in the first liquid and 8 hours in the second liquid.

A 5-ply plywood was made from the dried modified wood using a commercially available adhesive, and this plywood was cut and processed in the same manner as in Example 1 to obtain a wooden interior material.

Example 3 After adhering and laminating the modified wood obtained in Example 2 on a commercially available flame-retardant plywood (thickness 12N), this was cut and processed in the same manner as in Example 1 to create a wooden interior. The material was made.

Example 4 - After adhering and laminating the modified wood obtained in Example 2 to a commercially available calcium silicate board, this was cut and processed in the same manner as in Example 1 to produce a wood interior material. .

Example 5 - A sliced veneer of oak wood with a thickness of 0.3 cranes was adhered and laminated as a decorative veneer on the surface of the modified wood obtained in Example 2, and this was further coated with commercially available calcium silicate. A wooden interior material was produced by cutting and processing the material adhered and laminated to the board in the same manner as in Example 1.

- Comparative Examples 1 to 5 - In Examples 1 to 5, the same processing as in Examples 1 to 5 was performed except that untreated cypress wood was used instead of the modified wood. The material was made.

Examples 1 to 5 and Comparative Example 1 obtained as above
The wooden interior material according to Items 5 to 5 was constructed as a wall material, heated with a burner for 1 minute from the lower end, and the state of ignition or carbonization, the spread of the flame, the amount of afterflame such as the amount of smoke, etc. were observed.

As a result, no ignition was observed in any of the wooden interior materials according to Examples 1 to 5, only the vicinity of the heated surface was carbonized, and no afterflame was observed even after the heating was completed. On the other hand, the wooden interior materials according to Comparative Examples 1 to 5 (especially the wooden interior materials according to Comparative Example 1 using solid boards) caught fire in a similar manner, the flame spread, and afterflame was observed. At the same time, the amount of smoke generated increased significantly.

〔Effect of the invention〕

The wooden interior material according to the present invention has a rich woody feel because at least the surface portion is made of wood, and the wood constituting at least the surface layer of the wood portion has excellent antiseptic and insect repellent properties, dimensional stability, and mechanical properties. Because it is a modified wood with excellent physical strength, surface hardness, and flame retardancy, there is no rot, mold growth, termite damage, dimensional changes, or curling, etc.
It is safe from scratches and fire, and maintains a good wood quality over a long period of time.

[Brief explanation of drawings]

Figure 1 shows A fruit of the wooden interior material according to this invention It is a side sectional view of an example. ■・・・Wood interior material ■・・・Modified wood veneer ■ ···Base material

Claims (1)

[Scope of Claims] 1. An interior material in which at least the surface portion is made of wood, characterized in that the wood constituting at least the surface layer of the wood portion is modified wood containing an insoluble, nonflammable inorganic substance inside. Wooden interior material. 2 Modified wood containing an insoluble non-combustible inorganic substance inside is impregnated with one of a cation-containing treatment liquid and an anion-containing treatment liquid that produce the same insoluble non-combustible inorganic substance by mixing, and then impregnating the other. The wooden interior material according to claim 1, which is obtained by fixing an insoluble, nonflammable inorganic substance inside the raw material wood. 3. The cation-containing treatment liquid contains at least one selected from the group consisting of Mg, Al, Ca, Zn, and Ba cations, and the anion-containing treatment liquid contains CO_3, SO
The wooden interior material according to claim 2, which contains at least one selected from the group consisting of _4, PO_4, BO_3, and OH anion.