JPH04102689A - Fireproof door - Google Patents

Abstract

PURPOSE:To improve fire protective performance by making at least a part of constituent members of a noncombustible wooden chips plate which is formed via an adhesive substance, out of noncombustible wooden chips made by filling or fixing noncombustible inorganic compounds in the cellar holes and/or on the inner wall surfaces. CONSTITUTION:Noncombustible inorganic compounds are filled in the void parts such as cellar holes, conduit holes, or the like of dried wooden chips, or noncombustible inorganic compounds are fixed or stuck in layers along the inner walls of cellar holes, and further noncombustible inorganic compounds are fixed or stuck even on the outer circumferential parts of the wooden chips to form noncombustible wooden chips. Then, by integrally forming the noncombustible wooden chips via an adhesive substance in which noncombustible inorganic compounds are fixed, a non combustible wooden chips plate is obtained. And, the noncombustible wooden chips plates are made at least a part of the fire door constituent members. Thus, fire protective performance can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a fire door having at least a part of its constituent members made of an organic material with improved fire protection performance.

<Prior Art> Fire doors are required to be used at the entrance doors of rooms in hotels, apartment buildings, etc. to prevent fires and prevent the spread of fire. These fire doors are generally made of aluminum or steel or similar metals, and are extremely effective in achieving the goals of fire prevention and prevention of fire spread.

<Problem to be solved by the invention> However, although these metal fire doors avoid flaming and smoldering due to fire, they become distorted and deformed due to the high heat that accompanies the fire, making it difficult to open and close the door. We have a serious problem of causing

In addition, since the door is made of metal, it has problems such as a loud metallic sound when opening and closing the door, a cold feel, and poor insulation properties.

Means for Solving the Problems> Therefore, an object of the present invention is to provide a novel fire door that can exhibit excellent fire prevention performance even though it is made of wood. That is, the fire door according to the present invention is a non-combustible wood shavings formed by integrally molding non-combustible wood shavings whose cell pores and/or inner wall surfaces are filled with or fixed with a non-combustible inorganic compound via an adhesive substance. It is characterized in that at least a part of its constituent member is a plate.

Effect> Since at least a part of the constituent members of the fire door are made of noncombustible wood chipboard, the fire prevention performance is improved.

<Description of Specific Structure> The fire door according to the present invention is constructed by pasting decorative boards on the front and back sides of a core material assembled into frames. A honeycomb core, a core root, etc. are provided within the frame structure of the core material as necessary.

At least some of these components are made of non-combustible wood chip board. For example, a noncombustible wood chip board is used as a bar material of a desired thickness, which is then optionally fastened and assembled into a frame to form the core material.

Alternatively, non-combustible wood chipboard is used as the core, which is provided in the frame by regular (ie, non-combustible) bars. Furthermore, an arbitrary decorative sheet-like material such as a veneer can be attached to the surface of the noncombustible wood chip board, and it can be used as a surface plate to be attached to the front and back of the heartwood or heart root.

In this way, the non-combustible wood chip board used as a component of the fire door of the present invention has non-combustible wood chips filled with or fixed to the cell pores and/or the inner wall surface with a non-combustible inorganic compound. It is obtained by molding and fixing a material through a chemical substance, and specifically, it is as follows.

First, for example, softwood materials such as pine, cedar, toga, cypress, or lauan,
Chips, flakes, and strands are obtained by cutting logs, cores, and scraps of hardwoods such as Capole, Avitone, Crui, chestnut, poplar, and willow using a cutting device such as Chia/<-17 Laker. etc. This wood chip has cell pores consisting of wood cells, conduit pores, or plate grooves, and the cell wall at the outer periphery of the wood chip has been torn and has numerous cracks.

The obtained wood chips are dried and their moisture content is adjusted to about 7 to 15%.

A nonflammable inorganic compound is filled into the voids such as cell pores and conduit pores of the dried wood chips, or the nonflammable inorganic compound is fixed or adhered in a layer along the inner wall of the cell pores, and then the wood chips are The nonflammable inorganic compound is also fixed or adhered to the outer periphery of the piece to make it nonflammable. This nonflammability treatment can be performed, for example, by the following steps. That is, the wood chips are sufficiently immersed in an aqueous solution of a water-soluble inorganic salt (hereinafter referred to as "first solution") to impregnate it. At this time, it is effective to forcibly accelerate the impregnation treatment by applying reduced pressure or increased pressure.

Alternatively, the wood chips may be brought into a high moisture content state without drying, or after drying, they may be immersed in water or hot water to absorb water to saturate the wood chips, and then immersed in the first liquid for diffusion impregnation. You can let me.

As the first liquid, MgCJ2. MgBr=.

81gSO4・H20, Mg(N O3)!・6H,O
,AQCQ,.

AQBrs, ACz(SOa)+, AQ(NOs')s
・9H20°CaCQ2. CaBr2. Ca(NO3)
z, ZnC (i=BaBr2.BaCQ2・2H20,
Examples include aqueous solutions such as Ba(NO3). By immersing the wood chips in the first solution, ions of the inorganic salt of the solute diffuse into the cell pores in the wood chips.

Next, a dewatering process is performed to remove the excess first liquid. The liquid removal treatment is carried out, for example, by means such as centrifugal dehydration, rinsing with water, etc., and by removing the excess first liquid, non-flammable inorganic compounds are excessively produced on the outer periphery of the wood chips. This suppresses the impregnation and improves the diffusion impregnation of the aqueous solution to be impregnated next. It also prevents nonflammable inorganic compounds from being generated in a free state that is not attached or fixed to the wood chips 62.

A compound liquid that reacts with the first liquid to produce a water-insoluble, nonflammable inorganic compound (hereinafter referred to as the "second liquid")
The second liquid is added to and mixed with the wood chips using a blender, spray, etc., or immersed in the wood chips, thereby impregnating the wood chips with the second liquid. As in the case of the first liquid, impregnation of the second liquid into the wood chips can be promoted by vacuum or pressurization treatment.

As the second liquid, Na2CO+, H2SO.

(NH+): CO+, Na: S 04+ (NH
, )2S O4H2PO,, Na2HPO,, (NHI
)IHP○.

Examples include H, B○, NaBO, NHiBO, and the like.

By applying or dipping the 2nd liquid into the wood chips, the 2nd liquid is diffused and impregnated into the cell pores of the wood chips, and the 1st and 2nd liquids are mixed in the wood chips.
A nonflammable inorganic compound is produced by the reaction with the liquid. Nonflammable inorganic compounds produced include magfusium phosphate,
Calcium carbonate, barium phosphate, aluminum phosphate, magnesium borate, magnesium carbonate, calcium carbonate.

Examples include calcium compounds such as zinc phosphate, barium carbonate, calcium nitrate, and barium nitrate, magnesium compounds, aluminum compounds, barium compounds, lead compounds, zinc compounds, and silicate compounds. For example, when barium chloride is used as the first liquid and ammonium chloride hydrogen phosphate is used as the second liquid, the barium cations and phosphoric acid anions react to produce barium phosphate and barium hydrogen phosphate. .

After the reaction is completed, the excess second liquid is removed by centrifugal deliquidation or washing with water using Nyawa, Dofuzuke, etc. The immersion treatment and deliquification treatment of the second liquid may be repeated multiple times as necessary (1° After deliquification treatment, dry to reduce the moisture content to 25% or less, preferably 7 to 15%). Since this noncombustible inorganic compound is water-insoluble, after drying, it fills, adheres, or adheres to the inside of the cell pores of the wood chips or the inner wall surface of the cell pores, and also adheres or adheres to the outer periphery of the wood chips. As a result, the nonflammable inorganic compound is present in a form that blocks or fills the pores and cracks in the wood chips.

It is preferable that the non-combustible inorganic compound is mixed in at a ratio of 33% by weight or more to the wood chips, and if it is less than this, sufficient fire protection performance cannot be obtained. In addition, in order to increase the reaction efficiency between the first liquid and the second liquid, the addition and mixing of the second liquid is carried out under a heated atmosphere.
In particular, it is preferable to conduct the heating at a temperature of 40'C or higher, more preferably 50C or higher. Further, the first liquid and the second liquid are heated and the wood chips are immersed therein, or the first liquid and the second liquid are heated.
If electrical or mechanical vibrations are applied using ultrasonic waves, a vibrator, etc. during immersion in the liquid, the diffusion and reaction of the treatment liquid into the wood chips will be facilitated.

Note that the order of the treatment with the first liquid and the second elutriation liquid does not matter, and it is of course possible to perform the treatment with the second liquid first.

In this way, a non-combustible wood chip is obtained in which a non-uniform inorganic compound is fixed within the cell pores or on the inner wall surface, and a non-combustible inorganic compound is also fixed or adhered to the outer periphery thereof.

The non-combustible wood shavings are then placed in a mixing device to add and adhere the adhesive substance. As the adhesive substance, synthetic resin adhesives such as urea resin, melamine resin, isonoanate, urethane resin, evoquino resin, vinyl acetate resin, phenol resin, or modified resins thereof are preferably used.

If the adhesive substance is mixed with an engineered inorganic compound of the same kind or a different kind to that produced by the reaction between the first liquid and the second liquid, the fire protection performance can be further improved.

Non-combustible wood chips mixed with an adhesive substance are air blown,
The wood shavings 77 are placed in an ohming device to form continuous wood chips 77 of a constant thickness on the conveying device.

By cutting the obtained wood shavings mat to a specified length and then inserting it into a hot press and then hot-pressing the mat, or by hot-pressing the mat using a continuous press and then cutting it to a specified length, the wood shavings are board or obtained.

<Effects of the Invention> According to the present invention, there is provided a fire door that has significantly improved fire prevention performance even though it is made of wood components.

Claims (1)

[Claims] (1) A non-combustible wood particle board made by integrally molding non-combustible wood particles with a non-combustible inorganic compound filled or fixed into the cell pores and/or inner wall surface through an adhesive substance, its structure A fire door comprising at least a part of the member.