JP6517463B2 - Fireproofing material - Google Patents

Description

  The present invention relates to a fireproofing material to be filled between an inner surface of a through portion formed by penetrating a fireproof compartment of a building in a thickness direction and a wiring / pipe material inserted into the through portion.

  Heretofore, a penetration portion is formed in the fire protection compartment wall in order to allow the wiring and piping material to penetrate the fire protection compartment wall as a fire protection compartment in a building. And fire resistance processing is given between the inner surface of a penetration part, and wiring and piping material in a fire prevention division wall. For example, when a fire or the like occurs on the front surface of one wall sandwiching a fire protection partition wall, this fireproofing processing prevents the inflow of flame, smoke, toxic gas to the other side through the through hole, and the fire It is provided to delay the spread of fire. That is, when fires occur, the fireproofing process blocks the inflow of flames, smoke, and toxic gas to the side opposite to the fire occurrence side by closing the through hole and the wiring and piping material. ing.

  As such fireproofing treatment, there is one in which a fireproofing material is filled between the through hole and the wiring / pipe material. As a fireproof processing material, an opening fire protection device indicated by patent documents 1 is mentioned, for example.

  The opening fire protection device is formed by sealing a thermally expandable refractory material in a bag. The thermally expandable refractory material is configured by laminating a plurality of thermally expandable refractory sheets. The thermally expandable fire resistant sheet is mainly composed of rock wool which is a refractory material, and the rock wool contains uncalcined vermiculite powder which is a thermally expandable material. In addition, the bag body is made of a translucent polyethylene film having flexibility and air tightness. The thermally expandable refractory material is then sealed and compressed in the degassed bag.

  The opening fire protection device of the above configuration releases the sealed state of the bag body when the through hole is filled, and releases the degassed state, thereby returning the thermally expandable refractory material to its original shape, and the restoration thereof. In the state, the through holes are closed utilizing the cushioning property of the thermally expandable refractory material.

  Then, if a fire is encountered, the unburned vermiculite of the thermally expandable refractory material thermally expands while the bag body of the fire protection device is burned down. For this reason, even if the wiring or piping material inserted into the through hole is burnt down or softened, the thermally expandable refractory material thermally expands toward the wiring or piping material to compensate for the decrease, and the fire Spreading fire can be delayed.

JP 2007-75515 A

  By the way, in order to be able to close the gap created by the burning and softening of the wiring and piping material by the expansion of the thermally expandable refractory material, it is necessary to provide the thermally expandable refractory material with sufficient expansivity. It is necessary to contain a large amount of thermally expandable material. However, since the thermally expandable material does not have elasticity or cushioning property, when a large amount of thermally expandable material is contained in the thermally expandable refractory material, the cushioning property of the thermally expandable refractory material is lowered, and There is a risk that the used through hole can not be closed.

  An object of the present invention is to provide a fireproof treated material capable of reliably filling a gap at the time of expansion while improving the cushioning property of the treated material body.

In order to solve the above-mentioned problems, the invention according to claim 1 relates to the inner surface of the through portion formed by penetrating the fireproof compartment of the building in the thickness direction, and the wiring and piping inserted through the through portion. Material which is filled with the material and which can be compressed and deformed according to the shape of the outer surface of the wiring and piping material to be pressure-welded, and a cushion which can elastically return from the state of being compressed and deformed to the original shape A cushioning material formed by bonding short fibers of a non-combustible / flame-retardant inorganic compound into a cotton-like mass to form a block-like structure, The gist of the present invention is to provide a processing material main body in which expanded graphite is dispersed.

  There is unsintered vermiculite as an expansive material that expands with heat, but this unsintered vermiculite has a lower expansion coefficient than expanded graphite. For this reason, when a processing material main body is made to have a desired expansion coefficient, the amount of use of expanded graphite may be smaller for unbaked vermiculite and expanded graphite. For this reason, the ratio of the cushion material to the entire treatment material main body is higher than in the case of using unbaked vermiculite, and the cushioning property of the fireproof treatment material can be improved. Therefore, when the fireproofing material is filled in the through portion in a compressed state, the recovery force from the compressed state is increased, and the gap between the inner surface of the through portion and the wiring / pipe material can be reliably filled. .

Moreover, it is preferable to provide the cover body which covers the said process material main body about a fireproof process material.
According to this, for example, when a fibrous material such as ceramic fiber or rock wool is used as the cushion material, it is possible to prevent the fibers from being scattered by the cover body.

Moreover, it is preferable that the said cover body is equipped with a metal layer, and the said metal layer is exposed to the surface about a fireproof processing material.
According to this, when filling a fireproof processing material to a penetration part, metal layers carry out sliding contact in fire protection processing materials which adjoin each other. For this reason, friction between fireproof processing materials becomes small, and it is easy to fill fireproof processing materials in a penetration part. Further, when a fire is encountered, the heat is transmitted to the metal layer and easily transmitted to the expanded graphite of the treatment material main body, and the treatment material main body can be rapidly expanded.

  Further, regarding the fireproofing material, the cover body includes a plurality of bag-like housing portions for housing the entire processing material main body, and further includes a connecting portion for connecting the housing portions between the adjacent housing portions. It may be

  According to this, since the fireproofing treatment material integrally includes the plurality of treatment material bodies, the plurality of treatment material bodies can be filled in the penetration portion in one filling operation. In addition, the fireproofing material can be divided from the connecting portion, and the size of the fireproofing material can be reduced. At this time, there is no need to directly cut the treatment material main body in order to divide from the connecting portion, and the cushion material does not scatter from the cut surface.

  According to the present invention, the gap can be reliably filled at the time of expansion while improving the cushioning property of the treatment material main body.

The perspective view which shows the fire protection division wall which gave fireproof processing of embodiment. The front view which shows the fire protection division wall which gave fireproof processing of embodiment. The perspective view which shows the fireproof processing material of embodiment. BRIEF DESCRIPTION OF THE DRAWINGS The perspective view which shows the processing material main body of embodiment. Sectional drawing which shows the fireproof processing material of embodiment. (A) is a fragmentary sectional view which shows a cover body, (b) is an enlarged view which shows a cover body. The perspective view which shows the fireproof processing material of another example.

Hereinafter, one embodiment which materialized a fireproof processing material is described according to Drawings 1-6.
As shown in FIG. 1 and FIG. 2, the fireproofing material 11 is applied by being filled in the through portion 34 formed in the fire protection partition wall W as the fire protection division body. The penetration part 34 penetrates the fire protection division wall W in the thickness direction, and connects the one wall front side of the fire protection division W with the other wall front side. The penetrating portion 34 has a plurality of dividing plates 35 arranged in parallel in the longitudinal direction and the lateral direction of the fire prevention dividing wall W, and is formed inside the dividing plates 35 arranged in parallel.

  Further, a support rack 20 for wiring and piping material is disposed in the through portion 34. The support rack 20 includes a pair of support plates 21 opposed to each other so that the longitudinal direction extends in the thickness direction of the fire protection partition wall W, and a rack 22 bridged between the pair of support plates 21. The plurality of wiring and piping members 33 are supported on the rack 22 of the support rack 20, and the wiring and piping members 33 pass through the fire protection partition wall W. The wiring and piping material 33 is the length of wiring (control cable, coaxial cable, optical cable, etc.) and piping material (synthetic resin flexible conduit, steel conduit, etc.) disposed in the building. It is a generic term of the scale.

Next, the fireproof processing material 11 with which the penetration part 34 is filled is demonstrated.
As shown in FIGS. 3 to 5, the fireproofing material 11 is formed in a flat rectangular parallelepiped shape. The fireproofing material 11 includes the treating material body 12 formed in a flat rectangular parallelepiped shape (flat block shape), and also includes the cover 13 that covers the entire treating material body 12 from the entire surface side.

  In the treatment material main body 12, the direction in which the two side surfaces having the largest area among the six side surfaces are opposed is taken as the thickness direction of the treatment material main body 12. The processing material body 12 is mainly made of a cushioning material which gives the processing material body 12 a cushioning property. The cushioning material is made of a cotton-like mass obtained by binding, with a binder element, short fibers of a non-combustible and flame-retardant inorganic compound such as ceramic fiber and rock wool. The treatment material main body 12 is shaped into a flat block shape by the cushioning material, and has cushioning properties and flexibility by the cushioning material, and has required elasticity. That is, the processing material main body 12 can be compressed and deformed, and can be returned to the original shape from the state of being compressed and deformed.

  The treatment material main body 12 includes expanded graphite as a thermally expandable material in order to make the treatment material main body 12 thermally expandable. Expanded graphite is dispersed throughout the cushioning material. Expanded graphite is a material that expands several tens to several hundreds by heat and has a higher expansion coefficient than unexpanded vermiculite expanded by heat. More specifically, since unbaked vermiculite is a material having an expansion coefficient of several times to ten and several times, the expanded graphite has a higher expansion coefficient than unbaked vermiculite.

  As shown in FIGS. 6 (a) and 6 (b), the cover 13 is provided with a glass cloth 13a made of glass fiber, and this glass cloth 13a has a plurality of warps and wefts made of glass fiber one by one. It is formed of plain weaves combined alternately. Moreover, the cover body 13 is provided with the metal layer 13b made from aluminum vapor-deposited by the glass cloth 13a. The glass cloth 13a and the metal layer 13b are both flame retardant, and the cover 13 is flame retardant.

  The cover body 13 is in the form of a sheet larger than the processing material body 12. The cover 13 is folded so that the glass cloth 13a is on the inside and the metal layer 13b is on the outside. Further, the cover body 13 covers all six side surfaces forming the treatment material body 12. For this reason, the cover body 13 covers the treatment material main body 12 so that the metal layer 13 b is exposed on the surface of the fireproof treatment material 11.

  As shown in FIG. 5, in the folded cover body 13, a tape 23 is attached to the end edge of the folded cover body 13 to prevent the cover body 13 from being opened to a shape before being folded.

Next, a method of applying a fireproofing treatment to the fire protection partition wall W using the fireproofing material 11 will be described.
As shown in FIGS. 1 and 2, a plurality of partition plates 35 are used to partition the penetration portion 34 in the fire protection partition wall W. Next, the support rack 20 is disposed in the through portion 34. Next, the rack 22 of the support rack 20 supports the plurality of wiring and piping members 33 and causes the fire prevention partition wall W to penetrate the wiring and piping members 33.

  Then, a large number of fireproofing materials 11 are filled between the inner peripheral surface of the through portion 34 and the outer surface of the wiring / plumbing material 33. That is, a plurality of fireproofing materials 11 are filled according to the size of penetration part 34 in the lateral direction, and a plurality of fireproofing materials 11 are filled according to the size of penetration part 34 in the longitudinal direction. At this time, the fireproofing material 11 is filled in the gap in a state of being compressed in the thickness direction by utilizing the cushioning property of the treatment material main body 12. For this reason, the fireproofing material 11 is a fireproofing material adjacent to the inner circumferential surface of the penetrating portion 34, the outer circumferential surface of the wiring / plumbing material 33, and the longitudinal direction and the lateral direction of the penetrating portion 34 by the return force to the original shape. 11 is in pressure contact. Furthermore, since the metal layer 13b of the cover 13 is exposed on the surface of the fireproofing material 11, when the fireproofing material 11 is filled in the gap between the fireproofing materials 11, friction between the fireproofing materials 11 is It is reduced, and the fireproofing materials 11 are slippery to each other and easy to be filled.

  Further, in the longitudinal direction and the lateral direction of the penetrating portion 34, a gap smaller than the size of the fireproofing member 11 is formed between the fireproofing members 11 or between the inner peripheral surface of the penetrating portion 34 and the support rack 20. In this case, the refractory treatment material 11 is filled according to the size of the gap. At this time, the fireproofing material 11 is cut into a required size and used. Then, the gap between the fireproofing material 11 and the wiring / plumbing material 33 is reduced as much as possible. Next, the heat-expandable heat-resistant sealing material 29 is filled in the gap. Further, an adhesive tape 28 is attached so as to close a fine gap formed between the heat-expansible heat-resistant sealing material 29 and the wiring / pipe material 33 or the fireproofing material 11. For example, in the wiring / pipe material 33, the adhesive tape 28 is attached so as to straddle the fireproofing material 11 filled from the root portion on the through portion 34 side.

  Furthermore, in the fireproof processing material 11 exposed to the surface of the fire protection partition W, the gap formed between the fireproof processing materials 11 adjacent to each other adheres to the fireproof processing material 11 adjacent to each other so as to bridge the gap. It is closed by sticking the tape 28.

  Now, in a building in which the fireproof partition wall W is subjected to fireproof processing, it is assumed that a fire or the like occurs on the front wall side of the fireproof partition wall W, and the wiring / pipe material 33 burns. At this time, the cover 13 of the fireproofing material 11 is in pressure contact with the outer surface of the wiring / pipe material 33. The metal layer 13 b is exposed in the cover body 13. For this reason, the heat generated from the wiring / pipe material 33 is rapidly propagated through the metal layer 13 b and is rapidly transmitted from the metal layer 13 b to the treatment material main body 12.

  Then, the heated processing material body 12 is expanded with the cushioning material by the expansion of the expanded graphite. The cover body 13 is broken by the expansion of the treatment material body 12, and the expanded fireproof treatment material 11 seals and closes the space between the wiring / pipe material 33 and the penetration portion 34. That is, the gap between the outer surface of the wiring / pipe material 33 and the penetrating portion 34 becomes a path of flame, smoke, toxic gas, heat, and the fire, smoke, toxic gas, heat Transmission is prevented, and the fireproof processing material 11 exhibits a fireproof function.

According to the above embodiment, the following effects can be obtained.
(1) The treatment material main body 12 of the fireproof treatment material 11 is formed by adding expansive graphite to the cushion material. Expanded graphite has a high expansion coefficient as compared with uncalcined vermiculite as another expansion material. Since the expansion coefficient of uncalcined vermiculite is several times to ten and several times, the expansion coefficient of expanded graphite is about 10 times that of uncalcined vermiculite, and in the case where the desired expansion coefficient is given to the processing material main body 12, The ratio of expanded graphite to the volume of the material body 12 is about one tenth of that of uncalcined vermiculite. That is, in the uncalcined vermiculite and the expanded graphite, the used amount of the expanded graphite may be smaller. Therefore, the proportion of the cushioning material with respect to the volume of the processing material main body 12 becomes high because the amount of the expanded graphite can be reduced, and the cushioning properties of the processing material main body 12 and the fireproof processing material 11 can be improved. Therefore, when the fireproofing material 11 is filled in the through portion 34 in a compressed state, the return force from the compressed state becomes large, and the gap between the inner surface of the through portion 34 and the wiring / pipe material 33 is assured. It can be filled.

  (2) In the refractory treatment material 11, expanded graphite is added to the treatment material main body 12, and the treatment material main body 12 itself has an expansibility. For this reason, although the fireproof processing material 11 has a cushioning property by the processing material main body 12, when the fire or the like occurs, the processing material main body 12, that is, the entire cushion material expands at a high expansion rate. Accordingly, the loss of expansion due to the cushioning material is small, and the treatment material main body 12 itself is not crushed, and the penetration portion 34 can be reliably closed by the fireproof treatment material 11.

  (3) The treatment material main body 12 is covered with the cover body 13. Although the cushioning material of the treatment material main body 12 is made of short fibers, covering with the cover body 13 can prevent the short fibers from being scattered.

  (4) The cover body 13 includes the metal layer 13 b. For this reason, the heat of the heat and the flame accompanying the combustion of the wiring and piping material 33 can be rapidly transmitted from the metal layer 13b to the whole of the treatment material main body 12, and the expanded graphite of the treatment material main body 12 can be rapidly expanded. .

  (5) The cover 13 has the metal layer 13 b, and the metal layer 13 b is exposed on the surface of the fireproofing material 11. For this reason, friction is reduced by the metal layer 13b, and the fireproof processing materials 11 are slippery. Therefore, when filling the fireproof processing material 11 in the clearance of the penetration part 34, it becomes easy to fill a clearance by sliding the fireproof processing material 11.

  (6) In the processing material body 12, expanded graphite is dispersed in the entire cushion material. For this reason, the expanded graphite is not biased to a specific position of the cushion material, for example, in the vicinity of the outer peripheral surface, and a portion with low cushioning property is not formed. Therefore, the cushioning property can be exhibited by the fireproofing material 11 regardless of the direction of the filling of the fireproofing material 11 into the through portion 34. Furthermore, cushioning properties are uniformly high on both sides in the thickness direction of the flat block shape in the processing material body 12. For this reason, the refractory treatment material 11 follows the roundness of the outer surface of the wiring / pipe material 33, and the fireproof treatment material 11 is penetrated through the portion 34 so that the gap filled with the thermally expandable heat resistant sealing material 29 can be made as small as possible. Can be filled.

(7) In the treatment material main body 12, the desired expansion coefficient can be given to the refractory treatment material 11 only by adding the exfoliated graphite to the cushion material, and it is not necessary to use other expansion means.
The above embodiment may be modified as follows.

  In the embodiment, the fireproof treatment material 11 is configured to cover the treatment material main body 12 one by one with the cover body 13, but the fireproof treatment material is configured to collectively wrap a plurality of treatment material bodies 12 with one cover body. It may be

  As shown in FIG. 7, in the fireproof processing material 50, the cover body 40 has a long strip shape, and includes a plurality of housing portions 41 for housing the processing material bodies 12 one by one in the longitudinal direction of the cover body 40. In the same manner as the embodiment, the cover body 40 is formed by vapor-depositing the metal layer 13b made of aluminum on the glass cloth 13a. Moreover, the cover body 40 is provided with the connection part 42 between the accommodating parts 41 which adjoin the longitudinal direction.

  When configured in this manner, since the fireproofing treatment material 50 integrally includes the plurality of treatment material bodies 12, the plurality of treatment material bodies 12 can be filled in the through portion 34 in one filling operation. Further, the treatment material main body 12 can be divided into one or more from the connecting portion 42, and the size of the fireproof treatment material 50 can be reduced. At this time, since the fireproof processing material 50 is divided from the connecting portion 42, there is no need to cut the processing material main body 12 directly, and scattering of the cushion material from the cut surface can also be prevented.

The metal layer 13b of the cover 13 is not limited to aluminum, and may be formed of another metal material.
In the cover 13, the bonding method of the glass cloth 13a and the metal layer 13b may not be vapor deposition, but may be bonding with adhesive or thermal welding.

The glass cloth 13a of the cover 13 may be another fiber material, and carbon fiber, non-woven fabric, etc., and not limited to fiber material, may be suitably changed.
In the embodiment, the cover 13 is formed into a sheet and the cover 13 is folded so as to wrap the treatment material main body 12. However, the cover 13 is formed into a bag having an insertion port, and the treatment material is contained in the cover 13. After the main body 12 is accommodated, the insertion hole may be closed to form the fireproofing material 11.

The cushioning material of the treatment material main body 12 may be changed as appropriate as long as it is a non-combustible / flame-retardant inorganic compound having a cushioning property to the treatment material main body 12.
The cushion material of the treatment material body 12 may be, for example, a flame retardant sponge or rubber.

The treatment material main body 12 does not have to be a single rectangular solid, and may be a rectangular solid having a plurality of layers formed by adding exfoliated graphite to a cushion material and layered.
The treatment material main body 12 and the cover 13 may be bonded by an adhesive.

  In the fireproof treatment material 11, if the treatment material body 12 does not fall off from the cover body 13, an opening may be formed in the cover body 13, and the treatment material body 12 may be exposed to the outside of the cover body 13.

The fireproofing material 11 may not have a rectangular parallelepiped shape, and may have a spherical, octahedral, or triangular pyramid shape.
In the fire prevention partition wall W, the penetration part 34 may be formed inside a cylindrical sleeve disposed along the inner peripheral surface of the through hole penetrating the fire protection compartment wall W.

○ The fire compartment may be a fire compartment floor.
Next, technical ideas that can be grasped from the above embodiment and another example will be additionally described below.
(A) The fireproofing material, wherein the fireproof compartment is a fireproof compartment wall.

  W: fire protection partition wall as a fire protection partition body, 11, 50: fireproof treatment material, 12: treatment material main body, 13, 40: cover body, 13b: metal layer, 33: wiring and piping material, 34: penetration part, 41 ... containing part, 42 ... connecting part.

Claims (4)

It is a fireproofing material filled between an inner surface of a penetration portion formed by penetrating a fireproof compartment of a building in a thickness direction, and a wiring / pipe material inserted in the penetration portion,
Incombustible, so as to form a block shape, having flexibility capable of compressive deformation in accordance with the outer surface shape of the wiring / pipe material to be press-contacted, and cushioning property capable of elastic return from the compressively deformed state to the original shape. It has a cushioning material formed by bonding short fibers of a flame-retardant inorganic compound into a cotton-like mass, and a treatment material main body in which expanded graphite is dispersed throughout the cushioning material. Fireproofing material to be treated.   The fireproof processing material according to claim 1 provided with a cover which covers said processing material main part.   The fireproofing material according to claim 2, wherein the cover body comprises a metal layer, and the metal layer is exposed on the surface.   The cover body is provided with a plurality of bag-like accommodating portions for accommodating the entire processing material main body, and a connecting portion for connecting the accommodating portions to each other between the adjacent accommodating portions. Fireproofing material described in.