KR100279805B1 - High Functional Wood Treatment - Google Patents

Abstract

The present invention relates to a high-functional wood processing method for imparting high functionality to a dried wood material, the step of artificially drying the wood-based material to less than 10% moisture content and processing to a predetermined dimension;

High-performance imparting step, including the domestic treatment and preservation treatment for the dried wood material,

For the high-functionality wood materials, using a urethane resin, an acrylic resin and a fluorine resin using a surface treatment step of undercoat, intermediate and top coating, respectively,

It imparts water resistance, weather resistance and weather resistance to wood materials, and has the effect of maintaining the imparted properties for a long time.

Description

High Functional Wood Treatment

The present invention relates to a method for treating high-functional wood, and more specifically, to a material that is produced by multi-processing a high functional granting step including water treatment, preservation treatment, and the surface of a material with a specific resin for an artificial or natural dried material. The present invention relates to a method for treating wood which can improve the water resistance and the preservation of the metal, and at the same time, can exhibit the long-term performance in indoor and outdoor.

Wood has been widely used as an indispensable material due to the natural advantages of materials as a renewable resource, and in recent years, the advantages of wood and environmentally friendly materials are growing more and more at home and abroad. As levels increase, the use of wood is increasing. In particular, in houses and architectural structures, the use is increasing enough to construct almost all structural members and interior and exterior materials with wood. However, due to the inherent characteristics of wood, such as absorbency and hygroscopicity, wood materials have poor stability and are not suitable for use in places with high moisture or moisture such as shrinkage, swelling, twisting and cracking, and rot, discoloration and mold. It has been recognized. Therefore, it is difficult to apply to structural members and exterior materials or places with high humidity indoors, such as bathrooms or toilets in contact with the external environment, such as the use of artificial materials such as porcelain, ceramics or earthenware tiles. When the artificial member products are installed in the bathroom, it is necessary to use adhesive materials such as lime or cement, so that mold is frequently generated, which is not clean for environmental hygiene, and safety accidents are frequently caused by slippage. In addition, these materials not only had a disadvantage in that they could not be recycled in terms of resource recycling, and when wood was used as the main member of the building structural member, there was a problem such as causing an appearance contradiction between the artificial member and the natural member to break the overall harmony. Recently, ondol floorboards and wooden flooring materials have been developed to solve such external inconsistencies, and they are used as interior materials for living rooms, bedrooms, and various buildings of houses, but these products are mainly laminated wood or resin boards on the surface of plywood or fiberboard. As well as very weak to moisture, discoloration and swelling occurs, and also has problems such as causing dimensional instability problems. In addition, the formalin component of the synthetic resin adhesive used in the production may be dissipated in the air, which may cause fatal harm to the human body.

In order to impart a high degree of water resistance, weather resistance and weather resistance to the wood, water and preservation treatment is essential, as well as surface treatment for the continuous maintenance of the properties is of paramount importance. The present inventors have developed a wood treatment method that can improve the condition and performance of the material before the surface treatment, as a result of experiments for imparting such characteristics and repeated experimental studies for long-term maintenance of the characteristics.

It is an object of the present invention to improve the disadvantages such as the super absorbency, high hygroscopicity and thickening of wood, to significantly improve the performance of the conventional wood, and to provide a high-performance wood processing method that can maintain these characteristics for a long time. will be. Accordingly, the present invention provides a wood member that can replace conventional ceramic materials, earthenware, and earthenware members, and provides a method of utilizing the improved wood member as a wood tile, wood flooring, and interior material, and at the same time, provides a treatment technology for exterior materials. It is.

Another aspect of the present invention is to solve the problems of conventional wood flooring based on plywood or fiberboard to provide a wood member with excellent dimensional stability and environmentally friendly.

The present invention proposes a treatment method that preserves the advantages due to the naturalness of wood to the maximum and at the same time improves resistance to moisture and decay, and gives resistance to moisture, mold and decay due to such treatment. At the same time, it is possible to additionally implement anti-slip, wear resistance, wash resistance, chemical resistance, and fouling resistance effects.

In order to achieve the above object, the present invention is the step of artificially drying the wood to a moisture content of 10% or less after lumbering, and a high functional imparting step, including water-resistant treatment and preservation treatment by immersion treatment on resin harmless to human body, It is composed of a step of continuously surface treatment using a urethane resin, acrylic resin and fluorine resin.

Hereinafter, the present invention will be described in detail by way of examples.

First, artificially drying the wood-based material is adjusted to 10% or less moisture content. The moisture content is designed in consideration of various humidity and moisture conditions of the use space, the water content of more than that may cause a defect during use of the product. After the material with uniform moisture content is processed to a certain size, it is then subjected to water treatment and preservation treatment by impregnation, followed by urethane resin (composed of polyol, alkyd, polyisocyanate and other components), acryl The surface was finished with resin and fluorine resin (polyvinylidene fluoride (PVdF) and fluoroolefin vinyl ether (FEVE)). Among the above treatment methods, the fluorine-based resin for top coat is used in various metal materials such as steel structures of bridges and buildings, automobiles, aircrafts, ships, and concrete building materials, and is not applied to wood, but applied to wood in the present invention. In addition to the basic wood treatment steps described above, after the material with moisture content is controlled, the surface of the material may be polished and molded as needed. In addition, in order to match the thickness of the material after the water treatment and preservation treatment, a conventional planer or surface polishing may be carried out, and a snow-handling step for removing surface irregularities may be added.

The present invention is to provide a basic high-performance wood processing method, the degree of processing of the material and the product can be changed according to the final product shape by the wood processing method. For example, depending on whether it is used as a timber tile or interior materials, the material with the moisture content is adjusted to the required shape and degree of need. In addition, when manufacturing the final product, for example, the wood tile using the wood treatment method according to the present invention, if the size of the required wood tile is larger than the width of the wood lumber, the lumber must be processed to produce a large size material The adhesive used for the aggregation processing is preferably an adhesive having excellent water resistance and no formaldehyde dissipation from the final product, for example, an isocyanate-based adhesive, and the adhesive coating amount in the case of using the adhesive is 250 to 400 kg / m 2, And the compaction pressure is preferably applied in the range of 10 ~ 20kgf / ㎠.

Wood species that can be used in the present invention can be widely used in all imported materials as well as domestic ash, including hardwood and conifers, as a treatment agent for imparting water resistance and preservation harmless to the human body in developed countries including Europe It is a product that has passed the harmlessness and environmental standard. It is a water-soluble or oil-soluble medicine and preservative that does not cause discoloration and contamination of materials. These herbs are non-toxic and odorless resins that do not contain toxic substances (chromium, lead, arsenic, copper, etc.), are made from vegetable raw materials, and are commercially available.

The final step of the present invention is the surface treatment step of the material, the type and processing sequence of the treatment material implemented by the present inventors are as follows.

That is, urethane-based (consisting of polyols, alkyds, polyisocyanates or other components) resins and acrylic resins are used in the lower and middle layers, and fluorine-based resins (polyvinylidene fluoride (PVdF) or fluoroolefin vinyl ethers (FEVE) In the case where the order of the resin treatment is changed or when resin of different physical properties is used as the coating material, the physical properties of the final wood member appear to be unsuitable for the exterior or flooring material. As already described, the woods available in the present invention include domestic conifers such as cypress, cypress or larch and imported hardwoods such as maple, oak, or beech, but in the following examples domestic pine, cypress and Larch was targeted.

(Example 1)

After drying larch and artificially drying it to water content of 8% to 10%, it is made of wood material processed into dimensions 13cm × 60cm × 15mm in thickness. Impregnated for 10 minutes, followed by trade name Wood protector ) Was impregnated for 10 minutes. The surface of the wood material treated with water and preservation was treated with urethane resin and treated with acrylic resin, and finally treated with fluorine resin to produce wood tiles. The coating conditions at this time were normal conditions.

The same treatment method as in Example 1 was applied to pine and cypress wood, and it was judged that there was little dependence on wood material as a result of the treatment.

(Comparative Example 1)

After sanctioning larch and artificially drying it to water content of 8% to 10%, the same water and preservation treatment was performed on the material processed in the same dimensions as in Example 1, which was then made using urethane resin, and after urethane treatment, It was again coated with a resin to prepare a wood tile.

The wood tiles were evaluated for their clean resistance and gloss reduction rate according to Korean Industrial Standard KS M 5000 Test Method 3351, and their weathering properties were exposed to outdoor defects such as splitting, abrasion and peeling of the surface of wood tiles and exposed to the outdoors. As a result, the gloss reduction rate of the wood tile in Example 1 treated with fluorocarbon resin was 1.0 to 5.2%, and in Comparative Example 1 coated with polyurethane resin, the gloss reduction rate was better than 12.5 to 12.0%. In addition, when exposed to the outdoors and left for 8 months (April to November), discoloration and splitting occurred in the urethane resin treatment, but not in the fluorine resin treatment material.

(Example 2)

The treated cypress wood material (water content: 8%) was treated with water and preservation treatment in the same manner as in Example 1, and then the wood tiles were treated with urethane resin and acrylic resin, respectively, and were top treated with fluorine resin.

(Comparative Example 2)

The same as in Example 2, but was made of a urethane resin and an acrylic resin, respectively, was prepared a wooden tile top-treated with a urethane resin.

Properties of the wood tiles prepared in Example 2 and Comparative Example 2, water resistance, acid resistance, alkali resistance, adhesion, outdoor exposure test (discoloration and weather resistance), surface hardness and abrasion resistance measurement results and each test method As shown in 1.

Property test method and property result of wood tile Test Items Test crime Fluorine Resin Treatment Urethane Resin Treatment Water resistance 1 month immersion in water at room temperature clear clear Acid resistance 10% HCL 24 hours clear clear Alkali resistance 10% NaOH 24 hours clear clear Adhesion 2mm × 2mm Cross Cut 100/100 100/100 Outdoor exposure test (wetting and discoloration) 12 months clear Discoloration and splitting Surface hardness MITSUBISHI pencil method F H Wear resistance (wear amount) TABER CS-10 500g / 1000cycle 0.0532 g 0.0752 g

As shown in the above results, the case where the top resin is a fluorine resin is superior in weatherability and abrasion resistance when the top coat is a urethane resin. Therefore, it was proved that the water resistance and the storage characteristics initially imparted in the material can be preserved for a long time when top treated with fluorine resin. The present inventors have proposed urethane and acrylic resins as the bottom and middle treatment resins, and the bottom and middle urethane and acrylic resins are essential resins selected for reinforcing surface hardness, and the top fluorine resins have water, weather resistance, hot water resistance, It is an essential treatment resin selected for reinforcement of chemical resistance. That is, as a result of performing several repetitive multiple resin treatment methods, it is determined that the surface resin treatment method described in this embodiment is most optimized for the treatment of wood tiles, flooring materials and outdoor wood given high water resistance, weather resistance and weather resistance.

As described above, it is possible to impart water resistance, weather resistance and weather resistance to wood through the wood treatment method of the present invention, and also to maintain the imparted characteristics for a long time.

Wood tiles, wood flooring, and interior and exterior materials manufactured using the wood treatment method according to the present invention not only have high resistance to moisture and decay, but also can prolong long-term life even when exposed to the outdoors. It can improve the performance of chemical resistance, wash resistance, pollution resistance, abrasion resistance, hot water resistance, quick drying, slip prevention. Therefore, various types of wall tiles and floor tiles, which have been manufactured by using magnetic, earthenware, and earthenware materials, cannot be manufactured until now, so that wood, hotels, condominiums, villas, apartments, It is possible to substitute wood with improved characteristics as structural members and interior materials such as bathrooms and public sauna facilities such as recreational facilities, sports centers, etc. It is expected that the development of new wood industry and export of wood products will be possible.

In addition, the conventional inorganic tile is difficult to manufacture and the price is expensive due to deformation, etc. when manufactured to a certain size or more, while the wood tile using the present invention is easy to process due to the characteristics of the wood, there is no limitation on the size, various species If used, it can be manufactured in shape and pattern. In addition, the larger the size, the lower the processing cost can be obtained.

Claims (4)

Artificially drying the wood-based material with a water content of 10% or less and processing it to a predetermined dimension; High-performance imparting step, including the domestic treatment and preservation treatment for the dried wood material, The high-functional wood treatment method, consisting of a surface treatment step of the upper, middle and upper coating respectively using a urethane resin, an acrylic resin and a fluorine resin for the high-functionality wood material. The method of claim 1, characterized in that the surface polishing or eye-washing step is further added before the surface treatment step for surface modification of the high-performance wood material. The method of claim 1, characterized by impregnating the water-resistant and preservatives harmless to the environment in the high-imparting step. The wood member manufactured by the high performance wood processing method of Claim 1.