JPH0751149B2 - Underfloor moisture barrier - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to an underfloor moisture-proof material comprising a woody carbon flow capable of adsorbing water vapor and secreting components having antibacterial, antifungal and antiseptic properties. Regarding

[Prior Art] Conventionally, synthetic resin film such as polyethylene film and asphalt room temperature mixture have been commercially available to prevent moisture generated from the floor base, and a considerable humidity suppression effect can be obtained by laying this under the floor. Can be mentioned. On the other hand, a moisture-proof material for a chest of drawers containing a hygroscopic compound is commercially available for preventing moisture of the chest of drawers and the like.

[Problems to be Solved by the Invention] For the purpose of preventing moisture under the floor, the use of polyethylene film or asphalt ambient temperature mixture can bring about a considerable moisture-proof effect. However, even if it is possible to prevent deterioration of wood to a certain extent by preventing moisture, it is possible to directly suppress the generation and growth of fungi and molds that corrode wood, such as Pleurotus cornucopiae and Pleurotus cornucopiae. I can't. Further, although the sheet can shield the moisture generated from the ground, it has no resistance to the moisture that has entered between the sheet and the floor, and it seems that rain is sprinkled by a typhoon or the like. In some cases, rain may accumulate on the sheet.

Therefore, the present invention suppresses moisture generated from the ground, exhibits antibacterial properties, antifungal properties, antiseptic properties, and is capable of promptly absorbing underground water under the floor due to a typhoon or the like. An object of the present invention is to provide an underfloor moistureproof material suitable for various underfloor applications.

[Means for Solving the Problems] The present invention relates to an underfloor moisture-proof material made of wood carbon carrying hinokitiol.

When using the underfloor moisture barrier of the present invention, the underfloor moisture barrier is spread on the ground under the floor to a thickness of about 50 mm to 150 mm,
It is used by covering it with sand, especially sand, about 50 mm thick.

In the underfloor moisture-proof material of the present invention, the shape of the wood carbon to be used is not particularly limited, but particles of so-called kudzu charcoal class, especially about 3 to 10 mm, are easy to handle under the floor and impregnated with hinokitiol. It is preferable in terms of easiness and raw material cost.

A method of impregnating hinokitiol into wood carbon will be described below, but the method is not limited to this.

The first method is a method in which hinokitiol is dissolved in alcohol or an alcohol aqueous solution, for example, ethanol or an ethanol aqueous solution, and this solution is sprayed on wood carbon, or wood carbon is immersed in this solution, and the second method is the above alcohol. Alternatively, instead of an aqueous alcohol solution, an aqueous solution of hinokitiol alkali metal salt, especially Na salt is used.

Compared to the first method, the second method does not use alcohol and is therefore inexpensive and safe, and the hinokitiol adsorbed on woody carbon can be released smoothly. This is considered to be because the adsorption of hinokitiol by the first method is stronger than the adsorption of hinokitiol by the second method.

To make the sodium salt of hinokitiol, synthetic or natural hinokitiol may be treated with a 5 to 50% aqueous sodium hydroxide solution.

The concentration of hinokitiol in the solution used for spraying or impregnation is 30 to 50 ppm, and the pH of the aqueous solution is 7 to 12, especially 8 to 9
Is preferred.

The impregnation amount of the solution is 70% or more, preferably 80 to 100%, of the equilibrium adsorption amount of wood carbon to water, and it is desirable that it does not exceed 110% (if it exceeds 100, it is attached to the surface. it is conceivable that).

When this is expressed by the weight of the treatment liquid per 1 kg of wood carbon, the treatment liquid is 180 g or more, preferably 200 to 220 g.

The reason why hinokitiol was selected as the treatment reagent was as follows.

Although it is ethically possible to support wood carbon by using reagents, fungicides, and fungicides, which are used to prevent the growth of Pleurotus ostreatus, it is ethically possible, but these reagents do not adversely affect each. However, even if these reagents can be selected, in order to be able to actually use them as an underfloor dehumidifying agent, these impregnating reagents are gradually released from the wood carbon that is the carrier just for convenience. Must be of a certain nature. In addition, when it is used in a room, it should not be harmful to the human body and should not give off a bad odor.

Hinokitiol has all these properties in one drug, and there is no fear of causing pollution.

The underfloor moisture-proof material of the present invention can be used in a bare form as it is when laid under the floor, but when used as a closet, it is in the form of a scent bag, a hanging object or a fixture made of bamboo cylinder or plastics, It can be used by putting it in some kind of container such as a fitting type on the ceiling or floor.

For reference, the antibacterial activity of hinokitiol is shown in Table 1 and its toxicity is shown in Table 2.

[Examples] Example 1 220 g of a 30 ppm hinokitiol Na salt aqueous solution was uniformly sprayed on 1 kg of goose charcoal of about 3 to 10 mm generated from charcoal made by burning sawdust and wood chips at a high temperature. The obtained particles had a dry feeling.

Since the particles are used as an underfloor preservative, the particles are spread under the floor to a thickness of about 10 cm, and sand is applied to the particles with a thickness of about 10 cm to complete the construction.

Example 2 70 g of a suspension obtained by steam distillation of Taiwan cypress or Aomori hiba was evenly dispersed over 300 g of kudzu charcoal (particle size: 3 to 10 mm),
The obtained underfloor moisture barrier is packed in a cloth bag, humidity 70%, temperature 25 ° C.
It was put into a musty odorous press (depth 90 cm, height 180 cm, width 90 cm).

The indentation humidity measured after 3 days, 6 days, 3 months and 6 months (25 ° C) was 60%, which was a constant value. The musty odor still remained after 3 days, but completely disappeared after 6 days.

[Effect] The underfloor moisture barrier of the present invention, when used for underfloor,
In addition to controlling the humidity generated from the floor base, it can also adsorb the humidity in the underfloor space, keeping the underfloor space in a relatively dry and constant range of humidity, and hinokitiol at an appropriate ratio. Since it gradually diffuses into the air, the wood around the floor can be protected from various fungi and mold for a long period of time. Furthermore, when the underfloor moisture-proofing material of the present invention is used in a storage such as a closet, it not only absorbs moisture in the closet and suppresses the generation of mold, but also gives a savory woody cypress to clothes and the like. It can also be assigned faintly. The present invention also opens up new applications for so-called kudzu coal.

[Brief description of drawings]

FIG. 1 shows a hysteresis curve when wood carbon adsorbs and desorbs moisture.

Claims (1)

[Claims] 1. An underfloor moistureproof material comprising woody carbon particles supporting hinokitiol compounds.