JPH03224701A - Water and contamination roof treated wood - Google Patents

Abstract

PURPOSE:To enable waterproof and contamination-preventive treatment to be performed simply without damaging the exterior appearance and feelings of lumber by infiltrating into the inside of lumber silicone oligomer of low molecular weight, and thereafter, forming a water repellent silicone resin film of high molecular weight on the surface. CONSTITUTION:The inside of lumber 1 is infiltrated with silicon oligomer 2 of low molecular weight and, after the infiltration treatment, a silicon resin film 3 of high molecular weight is formed by application onto the surface of the lumber 1. The silicon oligomer 2 and silicon resin film 3 are used by being solved in a petroleum solvent for improving the infiltrating ability. In this manner, without producing cracks of the coated film, or even the silicon resin film on the surface wears partially by time-lapsed change, the waterproofness and contamination prevention can be maintained by the silicon oligomer infiltrated into the inside thereof. And, the treatment can also be effected readily without damaging the exterior appearance and feelings of the lumber.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to waterproof and anti-staining treated wood.

[Prior Art] Conventionally, in order to improve the water resistance and durability of wood, for example, the surface of the wood is painted, the interior of the wood is impregnated with a preservative, or WPC (Wood Plastic Co., Ltd.) is applied.
mbination) processing.

[Problems to be Solved by the Invention] However, in the case of the above-mentioned surface coating, it is necessary to thicken the coating film in order to improve water resistance, and cracks in the coating film may occur due to the difference in elasticity between the coating film and wood. There were drawbacks such as easy cracking and the appearance and texture of the wood was impaired by the paint film.

When impregnating with preservatives, it is suitable for railroad ties used outdoors, but due to the strong odor of preservatives and the effect it has on the human body, it cannot be applied to interior materials or bath screen screens. do not have.

In the case of WPC treatment, the texture, changes, and physical properties of the wood will change significantly, impairing the original texture of the wood.
Further, there is a drawback that the apparatus is large-scale and the cost is high, such as the need for radiation treatment.

The present invention was made to solve all of these conventional problems, and it does not impair the appearance and texture of wood, can be applied to interior materials and objects that come into contact with the human body, has little deterioration of wood, and is easy to treat. The technical problem is to provide a simple and inexpensive waterproof and anti-pollution treated wood.

[Means for Solving the Problem] As a means for solving this technical problem, the present invention impregnates the inside of the wood with a low molecular weight silicone oligomer, and then coats the surface with a water-repellent high molecular weight silicone resin. The main point is that it has been formed.

[How it works] Even if the silicone resin coating on the surface is partially worn away due to aging, the coating film will not crack, and the silicone oligomer impregnated inside will maintain sufficient waterproofing and pollution prevention. It can also be easily treated without damaging the appearance or texture of the wood.

[Examples] Hereinafter, the present invention will be explained in more detail with reference to illustrated examples.

In FIG. 1, numeral 1 is a piece of wood, the inside of which is impregnated with a low molecular weight silicone oligomer 2, and after this impregnation treatment, a high molecular weight silicone resin coating 3 is formed on the surface of the wood 1 by coating. In addition, the silicone oligomer 2
The silicone resin coating 3 can be dissolved in a petroleum solvent to improve its impregnability.

When the wood 1 is treated in this manner, the silicone resin coating 3 is water repellent and has anti-staining properties, so even if moisture or dirt adheres to the surface, it can be cleaned immediately by wiping with water. The silicone resin coating 3 is a thin film and has the property of following the substrate, that is, the property of staining well on the surface of the wood 1, so that cracking and peeling phenomena do not occur. The low molecular weight silicone oligomer 2 exhibits the effect of preventing moisture and water-soluble contaminants from penetrating into the interior, so the silicone oligomer 2 does not penetrate deep into the wood 1 and is relatively superficial. Even if the water and water-soluble contaminants remain in the area close to the water, it is possible to reliably prevent the moisture, water-soluble contaminants, etc. from penetrating into the deep part. If impregnation treatment with a preservative is also performed together with the impregnation treatment with the silicone oligomer 2, the decay resistance can be further improved.

A test board was created by applying the above treatment to a cypress board, and a bath screen was formed using this test board and an untreated tank board of the same size, and this screen was actually used in the bathroom for 8 months. As a result, the surface of the untreated scrap wood had dirt attached to it and turned black, and some parts were rotting, but the surface of the treated test board was clean and there was no discoloration, and the change in appearance was greater than that of the test board. The test results showed that no rot was found, and no decay was found at all.

[Effects of the Invention] As explained above, according to the present invention, a water-repellent high-molecular-weight silicone resin film is formed on the surface of the wood after impregnating the inside of the wood with a low-molecular-weight silicone oligomer. Even if the silicone resin coating on the surface is partially worn away due to aging, the silicone oligomer impregnated inside will maintain its waterproof and stain-proof properties without causing cracks, and the treatment will not affect the appearance of the wood. It has excellent effects such as being easily made without impairing the texture. Furthermore, by impregnating the wood with a preservative at the same time, the decay resistance of the wood can be improved.

4,

[Brief explanation of drawings]

FIG. 1 is a partially enlarged sectional view showing an embodiment of the present invention. 1... Wood 2... Silicone oligomer 3... Silicone resin coating

Claims (2)

[Claims] (1) A waterproof and anti-staining treated wood characterized by impregnating the inside of the wood with a low molecular weight silicone oligomer and then forming a water-repellent high molecular weight silicone resin coating on the surface. (2) The waterproof and anti-pollution treated wood according to claim (1), characterized in that the interior of the wood is impregnated with a preservative.