JP2009215723A - Fire resistant sheet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fire resistant sheet capable of giving a thermal insulation property to a member easily and securely. <P>SOLUTION: This fire resistant sheet A for giving thermal insulation property to the member is provided with a sodium silicate layer 1 containing sodium silicate foaming when heated and providing thermal insulation property and provided with a through-hole 1c passing through from one face 1a to the other face 1b, separating papers 2, 3 provided on one face 1a and the other face 1b of the sodium silicate layer 1 to separate, respectively, and a coating material 4 for coating an inner face forming the through-hole 1c in the sodium silicate layer 1. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a fireproof sheet for imparting heat insulation to members such as walls, floors, columns, and beams of a building.

  Conventionally, structural members (members) such as walls, floors, columns, and beams of buildings must be protected from the heat of the fire in the midst of high-rise fires in order to ensure building burnout prevention and structural stability (fire resistance). Yes, for example, it is important to suppress the back surface temperature of the non-fire side of the wall body and the rise in the temperature of the pillars and beams (ensuring heat insulation). In particular, it is excellent in humidity control, impact safety, and heat insulation, and has great effects on reducing mental and physical malaise, relaxing effects by fragrance, improving excitement, and emotional stability of children. In a structural member (wooden member) using wood, which is expected to be fired, it is necessary to burn out without burning out.

In contrast, for example, a structural member is formed by tying a heat-resistant sheet as disclosed in Patent Document 1 or Patent Document 2 with a member or inserting the member into the member, thereby providing fire resistance (heat shielding property). It is considered.
JP-A-8-199458 JP-A-10-331553

  However, for example, a conventional heat-resistant sheet used for a sheet shutter is used as a substitute for a fire shutter, and thus has a flame and smoke shielding performance, but its thickness is thin, and heat insulation is not expected. . For this reason, even if this type of heat-resistant sheet is bonded to a laminated material or inserted into a member such as solid wood, heat is transferred from the heating side to the non-heating side of the back surface, and it is burnt out with heat insulation. May not be secured.

  In view of the above circumstances, an object of the present invention is to provide a fireproof sheet that can easily and reliably impart heat insulation to a member.

  In order to achieve the above object, the present invention provides the following means.

  The refractory sheet of the present invention is a refractory sheet for imparting heat insulation to a member, and includes sodium silicate that is heated and foams to exhibit heat insulation, and penetrates from one surface to the other surface. A soda silicate layer, a release paper provided on the one side and the other side of the silicate layer so as to be peelable, and a coating material covering an inner surface forming a through hole of the sodium silicate layer. It is characterized by being prepared.

  In this invention, the release paper is peeled off and removed, and an adhesive is applied to one side and the other side of the sodium silicate layer and attached to the member, for example, used as a structural member such as a building wall, floor, column or beam. It is possible to impart heat shielding properties to the member simply by tying it to the laminated material or by inserting it into a solid wooden member. That is, the heat-shielding property can be exhibited by heating the sodium silicate layer of the refractory sheet disposed inside the member at the time of a fire and foaming the sodium silicate. For this reason, it can suppress that a heat | fever is transmitted to the inner side (back surface side of a member) rather than a fireproof sheet (it can exhibit heat-shielding property), and it becomes possible to ensure a burning stop.

  Further, since the through-holes are formed in the sodium silicate layer, it is possible to reduce the weight of the fireproof sheet and thus the member. Furthermore, when the member is a wooden member, the wood arranged inside the fireproof sheet through the through hole can be made to exhibit humidity control properties at the normal time, and the scent of the wood inside can be made to pass through the through hole. It becomes possible to diffuse outside. For this reason, it becomes possible to provide the member with the heat shielding property at the time of fire, without impairing the goodness of wood. In addition, since this sodium silicate layer is heated and expanded by foaming and closing when the through hole is fired, the heat resistance is surely imparted to the member by the fireproof sheet.

  Furthermore, before installing the fireproof sheet on the member (before using the fireproof sheet), the sodium silicate layer is covered with the release paper and the coating material provided on the inner surface of the through hole, so that the sodium silicate layer is protected. At the same time, the moisture content can be maintained, and the foaming performance of the sodium silicate layer can be maintained in a suitable state. In addition, when installed on the member (during use), the moisture content of the sodium silicate layer can be maintained with the adhesive applied to one side and the other side of the sodium silicate layer and the coating material provided on the inner surface of the through hole. It is possible to reliably maintain the foaming performance of the sodium silicate layer over a long period of time.

  According to the fireproof sheet of the present invention, the release paper is peeled off and removed, for example, provided so as to be ligated to a laminated material used as a structural member such as a building wall, a floor, a pillar, or a beam. It is possible to easily and reliably impart heat insulation to the member simply by inserting it inside.

  Hereinafter, a fireproof sheet according to an embodiment of the present invention will be described with reference to FIGS. 1 to 4. The present embodiment relates to a fireproof sheet for imparting heat insulation to structural members (members) such as walls, floors, columns, and beams of a building. In this embodiment, the structural members are wooden members. The description will be given assuming that there is something.

  As shown in FIGS. 1 and 2, the fireproof sheet A of the present embodiment is formed by including a sodium silicate layer 1, release papers 2 and 3, and a coating material 4.

  The sodium silicate layer 1 is made of sodium silicate containing an organic agent and / or an inorganic agent, has elasticity, and is formed with a thickness H1 of about 1 mm. The sodium silicate layer 1 is formed with a plurality of through holes 1b penetrating from one surface 1a to the other surface 1b, and each through hole 1c is formed with a diameter of several mm to several tens of mm. Has been. And when the sodium silicate layer 1 is heated, the sodium silicate foams to increase its thickness H1, and at the same time changes its transparency to opaque (colored close to white), thereby exhibiting heat insulation.

  Also, release papers 2 and 3 are provided on one surface 1a and the other surface 1b of the sodium silicate layer 1 so as to be peelable. Furthermore, a coating material 4 such as an emulsion-based paint or a protective film is provided on the inner surface of each of the sodium silicate layers 1 forming the through holes 1c so as to cover the inner surface.

  In addition, the one surface 1a and the other surface 1b of the sodium silicate layer 1 are thus covered with the release papers 2 and 3, respectively, so that the sodium silicate layer 1 is protected and its water content is maintained. Further, the inner surface of the sodium silicate layer 1 forming the through-hole 1c is covered with the coating material 4, so that the sodium silicate layer 1 is prevented from touching the surrounding air and the water content is maintained. Thereby, the fireproof sheet A before use is formed so that the foaming performance of the sodium silicate layer 1 is maintained in a suitable state by the release papers 2 and 3 and the coating material 4, and functional deterioration does not occur.

  As shown in FIGS. 3 and 4, the fireproof sheet A of the present embodiment configured as described above is bonded to a laminated material used as a structural member (member) 5 such as a building wall, floor, column, or beam. It is provided so that it can be used or inserted into a solid wooden member. At this time, the release papers 2 and 3 of the fireproof sheet A are peeled off and removed, and the adhesive 6 having heat resistance is applied to the one surface 1 a and the other surface 1 b of the sodium silicate layer 1 and then attached to the member 5. The At this time, since the fireproof sheet A (sodium silicate layer 1) is elastic, it can be easily carried and pasted. Even when the fireproof sheet A is installed, the weight of the member 5 does not increase because the through hole 1c is formed in the sodium silicate layer 1 to reduce the weight of the fireproof sheet A.

  And since the fireproof sheet A provided in the inside of the member 5 in this way is covered with the adhesive 6 on the one surface 1a and the other surface 1b, and the inner surface forming the through hole 1c is covered with the coating material 4, The sodium silicate layer 1 is protected and its water content is maintained. Thereby, as for the sodium silicate layer 1 installed in the inside of the member 5, the foaming performance is reliably maintained over a long period of time.

  Even when the refractory sheet A is provided inside the member 5 as described above, since the plurality of through holes 1c are formed in the sodium silicate layer 1, the refractory sheet A (sodium silicate layer 1) is sandwiched therebetween. The surface wood part 5a arranged on the surface side of the member 5 and the wood main body part 5b arranged inside the member 5 are connected through the through hole 1c. For this reason, in the normal state, the member 5 ensures humidity control, fragrance, appearance, and the like by the surface wood portion 5a in the same manner as normal wood, such as air from the inside wood body portion 5b to the surface wood portion 5a and thus to the outside. A flow path is ensured, the humidity control property of the wood body 5b is exhibited, and the scent is reliably diffused to the outside. Thereby, even when the fireproof sheet A is provided, the member 5 is formed without losing the goodness of wood.

  On the other hand, at the time of a fire, the surface wood portion 5a burns and the sodium silicate layer 1 is heated, and the sodium silicate in the sodium silicate layer 1 is foamed to increase its thickness H1. At the same time, the sodium silicate layer 1 changes from transparent to opaque near white. The foamed sodium silicate layer 1 exhibits a heat-shielding property that prevents heat from being transmitted to the wood body 5b, and prevents the wood body 5b from burning.

  Further, the foaming thickness H1 of the sodium silicate layer is not greatly reduced until it reaches about 700 ° C. However, by forming the sodium silicate layer 1 including the inorganic agent, the temperature of the sodium silicate layer 1 with this inorganic agent is increased. Can be maintained at a temperature at which sodium silicate foams reliably. Thereby, it is possible to stably foam the sodium silicate, stabilize the foam thickness H1 of the sodium silicate layer 1 (increased thickness due to foaming), and ensure that the sodium silicate layer 1 exhibits heat shielding properties. Is possible.

  At this time, the through hole 1 c formed in the sodium silicate layer 1 is closed together with the expansion of the sodium silicate layer 1. For this reason, even when the through-holes 1c are dispersed and formed in the sodium silicate layer 1 as in the present embodiment, heat at the time of fire does not propagate to the wood body 5b, and the wood body 5b Combustion is prevented.

  And by the combustion of the wood main-body part 5b by the sodium silicate layer 1, only the surface wood part 5a combusts the member 5 which provided the fireproof sheet A of this embodiment, and the thickness of this surface layer wood part 5a H2 will burn and burn.

  Therefore, in the refractory sheet A of the present embodiment, the release papers 2 and 3 can be peeled and removed, and the adhesive 6 can be applied to the one surface 1a and the other surface 1b of the sodium silicate layer 1 and attached to the member 5. It can be easily shielded against the member 5 simply by tying it to the laminated wood used as the structural member 5 such as a building wall, floor, pillar, or beam, or by inserting it into a solid wooden member. Can be granted. That is, when the sodium silicate layer 1 of the refractory sheet A disposed inside the member 5 is heated in the event of a fire and the sodium silicate foams, the heat shielding property can be exhibited. For this reason, it can suppress that a heat | fever is transmitted to the inner side (back side of the member 5) rather than the fireproof sheet A (it can exhibit thermal insulation), and it becomes possible to ensure a burning stop.

  Further, at this time, since the fireproof sheet A is formed with a very inexpensive sodium silicate as a main material and is low in cost, it is possible to impart heat shielding properties without increasing the cost of the member 5.

  Furthermore, since the through-hole 1c is formed in the sodium silicate layer 1, it becomes possible to reduce the weight of the fireproof sheet A and the member 5. In addition, during normal times, it is possible to allow the wood inside the fireproof sheet A (wood main body portion 5b) to exhibit humidity control through the through hole 1c and to diffuse the scent of the wood 5b to the outside. become. Therefore, it becomes possible to provide the member 5 with a heat shielding property at the time of fire without impairing the goodness of the wood.

  Further, before the installation on the member 5 (before use), the sodium silicate layer 1 is covered with the release papers 2 and 3 and the coating material 4 provided on the inner surface of the through hole 1c, so that the sodium silicate layer 1 is protected. In addition, the moisture content can be maintained, and the foaming performance of the sodium silicate layer 1 can be maintained in a suitable state. Further, when installed on the member 5 (during use), the sodium silicate layer 1 is composed of the adhesive 6 applied to the one surface 1a and the other surface 1b of the sodium silicate layer 1 and the coating material 4 provided on the inner surface of the through hole 1c. The water content of can be maintained. This makes it possible to reliably maintain the foaming performance of the sodium silicate layer 1 over a long period of time.

  In addition, it is possible to support the promotion of the use of timber in a building in order to compensate for the weakness of timber that is vulnerable to fire without impairing the goodness of the timber. In addition, when the building is made of wood, the total amount of carbon dioxide emission can be reduced compared to steel construction, which can contribute to the environment.

  As mentioned above, although embodiment of the fireproof sheet concerning this invention was described, this invention is not limited to said one Embodiment, It can change suitably in the range which does not deviate from the meaning. For example, in the present embodiment, the fireproof sheet A is provided on the wooden structural member 5 to impart heat insulation to the member 5, but the fireproof sheet of the present invention imparts heat insulation to members other than wooden members. You may apply to

  In the present embodiment, the normal thickness H1 of the sodium silicate layer 1 is about 1 mm. However, the thickness H1 of the sodium silicate layer 1 is appropriately determined within a range in which a desired heat shielding property can be exhibited. That's fine.

  Further, in the present embodiment, as shown in FIG. 3, one refractory sheet A is provided inside the surface of the member 5 so as to impart heat insulation to the member 5. Since it is thin and light, more fireproof sheets A may be juxtaposed in the thickness direction of the member 5, and the number of the fireproof sheets A adjusts the thickness H1 of the fireproof sheets A (sodium silicate layer 1). Similarly to the above, it may be changed as appropriate according to the requirements of heat shielding properties and burn-in.

  Moreover, although the through-hole 1c of the sodium silicate layer 1 shall be a circular hole, you may form in linear (slit shape), for example, and it is not necessary to specifically limit the shape of the through-hole 1c.

It is a top view which shows the fireproof sheet which concerns on one Embodiment of this invention. It is the X1-X1 arrow view figure of FIG. It is a perspective view which shows the state which installed the fireproof sheet which concerns on one Embodiment of this invention in the member. It is sectional drawing which shows the state which installed the fireproof sheet which concerns on one Embodiment of this invention in the member.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Sodium silicate layer 1a One side 1b Other side 1c Through-hole 2 Release paper 3 Release paper 4 Coating material 5 Member 5a Surface wood part 5b Wood main part A Refractory sheet H1 Thickness of sodium silicate layer H2 Thickness of surface wood part (burn) Generation)

Claims (1)

A fireproof sheet for imparting heat insulation to a member,
It includes sodium silicate that is heated and foams to exhibit heat shielding, and includes a sodium silicate layer in which a through-hole penetrating from one surface to the other surface is formed, and the one surface and the other surface of the sodium silicate layer, respectively. A fireproof sheet, comprising: a release paper provided so as to be peelable; and a coating material covering an inner surface forming a through hole of the sodium silicate layer.

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