JPH11247326A - Fire resistant covering for base isolation laminated rubber - Google Patents
Fire resistant covering for base isolation laminated rubberInfo
- Publication number
- JPH11247326A JPH11247326A JP5034298A JP5034298A JPH11247326A JP H11247326 A JPH11247326 A JP H11247326A JP 5034298 A JP5034298 A JP 5034298A JP 5034298 A JP5034298 A JP 5034298A JP H11247326 A JPH11247326 A JP H11247326A
- Authority
- JP
- Japan
- Prior art keywords
- silicone rubber
- rubber composition
- seismic isolation
- isolation laminated
- laminated rubber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Laminated Bodies (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Building Environments (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、建築物等の免震構
造に用いられる支承体の免震積層ゴムの動きに追随でき
る優れた柔軟性をもち、外形がコンパクトにでき、断熱
性、耐熱性、耐火性が良好で、燃焼時に有害なガスや煙
を発生することが少ない免震積層ゴム用耐火被覆に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention has excellent flexibility which can follow the movement of a seismic isolation laminated rubber of a bearing used for a seismic isolation structure of a building or the like, can have a compact outer shape, and has heat insulation and heat resistance. The present invention relates to a fire-resistant coating for seismic isolation laminated rubber that has good heat resistance and fire resistance and does not generate harmful gas or smoke during combustion.
【０００２】[0002]
【従来の技術】従来、ビルの基礎免震等に用いられる支
承体は、硬質板とゴム層とを積層して免震構造をとる免
震積層ゴムを、火災等の高温から保護するために、その
側面を免震積層ゴム用耐火被覆で覆っている。この耐火
被覆は、火災時に免震積層ゴム本体の性能が変質しない
よう、建築基準法により高度の耐火性が要求される。従
来このような高レベルの耐火性能に耐えるものとしてセ
ラミック繊維で織った布でセラミックウールを被覆した
セラミックファイバー単味のものが多用されている。図
２に免震積層ゴムの耐火被覆としてセラミックファイバ
ー単味からなる従来の耐火被覆を備えた支承体の１例の
断面図を示す。図２に示すように、支承体１０は、免震
構造の本体である免震積層ゴム１２と、フランジ１８
と、耐火被覆２２からなっている。セラミックファイバ
ー単味からなる従来の耐火被覆２２は柔軟性に欠け全く
伸びがないため、免震積層ゴム１２が地震等の外力によ
り変形した際に変形に追随できるように、形状を、蛇腹
状、または図２に示すように外側に凸状、あるいは内側
に凹状とし、耐火被覆２２の長さにゆとりを持たせてい
る。しかし、セラミックファイバー単味であると、型崩
れしやすく、取付け取外しが困難で、免震積層ゴムの変
形に追随できず破断しやすいという問題があった。ま
た、耐火被覆を外側に凸状にすると、免震積層ゴムを設
置している柱が太くなり場所をとるとともに見栄えも悪
くなるという問題があった。耐火被覆を内側に凹状にす
ると、耐火被覆と免震積層ゴム本体との間に設けられ断
熱効果に大きく寄与する空気層が少なくなるので断熱性
が低下するという問題があった。2. Description of the Related Art Conventionally, a bearing used for a base seismic isolation of a building is used to protect a seismic isolation laminated rubber having a seismic isolation structure by laminating a hard plate and a rubber layer from a high temperature such as a fire. The sides are covered with fireproof coating for seismic isolation laminated rubber. This fire-resistant coating is required to have a high level of fire resistance according to the Building Standards Law so that the performance of the seismic isolation laminated rubber body does not deteriorate during a fire. Conventionally, ceramic fibers coated with ceramic wool with a cloth woven of ceramic fibers are often used to withstand such a high level of fire resistance. FIG. 2 is a cross-sectional view of an example of a bearing body provided with a conventional fire-resistant coating made of plain ceramic fiber as the fire-resistant coating of the seismic isolation laminated rubber. As shown in FIG. 2, the support 10 includes a seismic isolation laminated rubber 12 which is a main body of a seismic isolation structure, and a flange 18.
And a refractory coating 22. The conventional fireproof coating 22 made of ceramic fiber alone lacks flexibility and does not stretch at all, so that the shape of the seismic isolation laminated rubber 12 is bellows-like, so that it can follow the deformation when deformed by an external force such as an earthquake. Alternatively, as shown in FIG. 2, the shape of the refractory coating 22 is made convex on the outside or concave on the inside so that the length of the refractory coating 22 has a margin. However, if the ceramic fiber is plain, it has a problem that it is easy to lose its shape, is difficult to attach and detach, cannot follow the deformation of the seismic isolation laminated rubber, and is easily broken. Further, if the fireproof coating is made convex outward, there is a problem that the column on which the seismic isolation laminated rubber is installed becomes thick, takes up space, and has a poor appearance. When the refractory coating is concave inward, there is a problem that the air layer provided between the refractory coating and the seismic isolation laminated rubber main body and greatly contributing to the heat insulating effect is reduced, so that the heat insulating property is reduced.
【０００３】[0003]
【発明が解決しようとする課題】本発明は上記実情を鑑
みてなされたものであり、その目的は、免震積層ゴムの
変形に十分追随できる優れた柔軟性を持ち、外層形状が
単純化でき、省スペースが可能であり、優れた耐熱性、
断熱性を持つ免震積層ゴム用耐火被覆を提供することで
ある。SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to have excellent flexibility enough to follow the deformation of seismic isolation laminated rubber and to simplify the outer layer shape. , Space-saving, excellent heat resistance,
An object of the present invention is to provide a fireproof coating for a seismic isolation laminated rubber having heat insulation properties.
【０００４】[0004]
【課題を解決するための手段】すなわち、本発明は、シ
リコーンゴム組成物の硬化物よりなる免震積層ゴム用耐
火被覆を提供する。That is, the present invention provides a fireproof coating for a seismic isolation laminated rubber comprising a cured product of a silicone rubber composition.
【０００５】また、シリコーンゴム組成物の硬化物が、
発泡性シリコーンゴム組成物の硬化物と非発泡性シリコ
ーンゴム組成物の硬化物との積層物である免震積層ゴム
用耐火被覆を提供する。[0005] A cured product of the silicone rubber composition is
Provided is a fireproof coating for a seismic isolation laminated rubber, which is a laminate of a cured product of a foamable silicone rubber composition and a cured product of a non-foamable silicone rubber composition.
【０００６】さらに、本発明は、シリコーンゴム組成物
の硬化物が発泡硬化したシリコーンゴム組成物発泡体と
非発泡性シリコーンゴム組成物の硬化物とを複合化して
なる免震積層ゴム用耐火被覆を提供する。Further, the present invention provides a fireproof coating for a seismic isolation laminated rubber obtained by compounding a silicone rubber composition foam obtained by foaming and curing a cured product of a silicone rubber composition and a cured product of a non-foamable silicone rubber composition. I will provide a.
【０００７】前記非発泡性シリコーンゴム組成物の硬化
物の破断時の伸びが５０％以上であるのが好ましい。The cured product of the non-foamable silicone rubber composition preferably has an elongation at break of 50% or more.
【０００８】前記発泡性シリコーンゴム組成物の硬化物
が、密度が５００ｋｇ／ｍ3 以下であるシリコーンゴム
発泡体であるのが好ましい。The cured product of the foamable silicone rubber composition is preferably a silicone rubber foam having a density of 500 kg / m 3 or less.
【０００９】[0009]
【発明の実施の形態】以下、本発明を詳細に説明する。
本発明は、免震積層ゴム用耐火被覆に関し、柔軟性に富
み、高温に曝されても耐火性に優れるシリコーンゴム組
成物の硬化物よりなる被覆であり、特に、柔軟性、断熱
性、耐熱性に優れる非発泡性シリコーンゴム組成物の硬
化物とシリコーンゴム組成物発泡体とを、組み合わせて
用いることを特徴とする。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail.
The present invention relates to a fire-resistant coating for a seismic isolation laminated rubber, which is a coating made of a cured product of a silicone rubber composition that is rich in flexibility and has excellent fire resistance even when exposed to high temperatures. It is characterized in that a cured product of a non-foamable silicone rubber composition having excellent properties and a foam of a silicone rubber composition are used in combination.
【００１０】図１に、本発明の免震積層ゴム用耐火被覆
（以下、本発明の耐火被覆と記す）を備えた免震積層ゴ
ムの１例の断面図を示す。図１に示すように、支承体１
０は、免震積層ゴム１２と、フランジ１８と、耐火被覆
１３からなっている。FIG. 1 is a cross-sectional view of an example of a seismic isolation laminated rubber provided with a fireproof coating for seismic isolation laminated rubber of the present invention (hereinafter referred to as a fireproof coating of the present invention). As shown in FIG.
Reference numeral 0 denotes a seismic isolation laminated rubber 12, a flange 18, and a fireproof coating 13.
【００１１】本発明の耐火被覆１３は、その端部がフラ
ンジ１８に固定されている。耐火被覆１３は、免震積層
ゴム１２が火災等の火炎や高温に曝されその性能が損な
われることを防止するために備えられているもので、免
震積層ゴム１２の側面を覆うように固定されている。免
震積層ゴム１２と耐火被覆１３の間には、空気層があ
る。耐火被覆１３は、図１の例に示すように、その端部
が、フランジ１８に固定されていてもよいが、支承体１
０がフランジ１８を介して固定されるコンクリート等か
らなる台座に固定されてもよい。このようにフランジ１
８もしくは台座に固定されていることにより、少なくと
も免震積層ゴム１２を外界から完全に遮断している。例
えば、耐火被覆１３と免震積層ゴム１２との間の空気層
は広くても近接していてもよく、また、支承体１０が取
り付けてある台座に耐火被覆１３が固定されている場合
は支承体１０と台座がかこむ空間全体を被覆していても
よい。The refractory coating 13 of the present invention has its end fixed to a flange 18. The fireproof coating 13 is provided to prevent the seismic isolation laminated rubber 12 from being exposed to a flame such as a fire or a high temperature and impairing its performance, and is fixed so as to cover the side surface of the seismic isolation laminated rubber 12. Have been. There is an air layer between the seismic isolation laminated rubber 12 and the fireproof coating 13. The end of the refractory coating 13 may be fixed to the flange 18 as shown in the example of FIG.
0 may be fixed to a pedestal made of concrete or the like fixed via the flange 18. Thus, the flange 1
By being fixed to the base 8 or the pedestal, at least the seismic isolation laminated rubber 12 is completely shielded from the outside. For example, the air layer between the fireproof cover 13 and the seismic isolation laminated rubber 12 may be wide or close to each other, and if the fireproof cover 13 is fixed to the pedestal to which the support body 10 is attached, The entire space in which the body 10 and the pedestal are encased may be covered.
【００１２】耐火被覆１３は、免震積層ゴム１２が火災
等の火炎や高温に曝されその性能が損なわれることを防
止するために、断熱効果を持つ断熱材の機能と、機械的
強度が大きく、伸びも大きく、且つ、耐引火性が高く熱
遮蔽効果のある耐火シートとしての機能の両方の特性を
持つことが好ましい。断熱材としては、熱伝達係数が低
く、且つ、ある程度の厚みを持って熱の伝達を低くし、
さらに断熱効果の大きい空気を内包するものが好適であ
る。断熱材としての形状は、特に限定されず直線状であ
っても蛇腹状であってもよい。ただし、内部に凸状であ
って耐火被覆１３と免震積層ゴム１２の間に設けられて
いる断熱効果に大きく寄与する空気層がせまくなる形状
は好ましくない。耐火シートとしては、その表面が緻密
で、熱を反射する特性を持ち、高温でも溶融せず耐火性
に優れる組成物が好適である。その形状は、特に限定さ
れず直線状に免震積層ゴム１２の側面を覆っても、長さ
にゆとりを持たせ弛んでいてもよい。耐火被覆１３は、
特に限定されないが、一般的には断熱効果の高いある程
度の厚みのある断熱材１４と、耐引火性が高く熱遮蔽効
果のある比較的薄い耐火シート１６とを備えている。た
だし、図１では、耐火被覆１３は、断熱シート１４と耐
火シート１６の２層を備えているが、本発明ではこれに
限定されるものではなく、断熱材１４一層、もしくは耐
火シート１６一層、各々単独で耐火被覆１３として用い
てもよい。また、断熱材の両面を耐火シートで覆った３
層構造としてもよいし、さらに多層としてもよい。３層
とすると、機械的強度が向上し、取扱も容易となる。The fireproof coating 13 has a function of a heat insulating material having a heat insulating effect and a large mechanical strength in order to prevent the seismic isolation laminated rubber 12 from being exposed to a flame such as a fire or a high temperature and impairing its performance. It is preferable to have both characteristics of a large elongation, a high flammability resistance and a function as a fireproof sheet having a heat shielding effect. As a heat insulator, the heat transfer coefficient is low, and it has a certain thickness to reduce heat transfer,
Further, those containing air having a large heat insulating effect are preferable. The shape of the heat insulating material is not particularly limited, and may be a linear shape or a bellows shape. However, a shape in which the air layer which is convex inside and greatly contributes to the heat insulating effect provided between the fireproof coating 13 and the seismic isolation laminated rubber 12 is small is not preferable. As the refractory sheet, a composition whose surface is dense, has a property of reflecting heat, and does not melt even at a high temperature and has excellent fire resistance is suitable. The shape is not particularly limited, and it may be linear or cover the side surface of the seismic isolation laminated rubber 12, or may be slack with a sufficient length. The refractory coating 13
Although not particularly limited, it generally includes a heat insulating material 14 having a certain thickness having a high heat insulating effect and a relatively thin fireproof sheet 16 having a high flammability and a heat shielding effect. However, in FIG. 1, the refractory coating 13 includes two layers of the heat insulating sheet 14 and the refractory sheet 16. However, the present invention is not limited to this, and one layer of the heat insulating material 14 or one layer of the refractory sheet 16 is provided. Each of them may be used alone as the fireproof coating 13. Also, both sides of the heat insulating material were covered with a fireproof sheet.
It may have a layered structure or a multilayer structure. With three layers, the mechanical strength is improved and handling is easy.
【００１３】断熱材１４と耐火シート１６は、各々独立
であっても、一体化してあってもよい。断熱材１４と耐
火シート１６が各々独立である場合は、断熱材１４と耐
火シート１６をそれぞれ別に製造して取り付けることが
できる。このとき、断熱材１４と耐火シート１６を別々
に製造すると断熱材１４と耐火シート１６の外面形状が
異なる場合に、取り付けが容易となり好ましい。断熱材
１４と耐火シート１６が一体化している場合、断熱材１
４と耐火シート１６をそれぞれ別に製造して張り合わせ
一体とする、もしくは、断熱材１４と耐火シート１６を
型成形して製造することで一体とし、取り付けることが
できる。複合化すると、耐火被覆１３の製造工程、取付
け工程を簡略化することができる。The heat insulating material 14 and the refractory sheet 16 may be independent or integrated. When the heat insulating material 14 and the refractory sheet 16 are independent from each other, the heat insulating material 14 and the refractory sheet 16 can be separately manufactured and attached. At this time, it is preferable to manufacture the heat insulating material 14 and the refractory sheet 16 separately because the mounting becomes easy when the outer surfaces of the heat insulating material 14 and the refractory sheet 16 are different. When the heat insulating material 14 and the refractory sheet 16 are integrated, the heat insulating material 1
4 and the refractory sheet 16 can be separately manufactured and bonded together, or the heat insulating material 14 and the refractory sheet 16 can be integrally formed and molded to be attached. When combined, the manufacturing process and the mounting process of the refractory coating 13 can be simplified.
【００１４】本発明の耐火被覆１３は、シリコーンゴム
組成物の硬化物からなるので、非常に柔軟性に富む。従
って、従来の耐火被覆のように蛇腹等の伸びの分だけ折
り畳んだ構造を取る必要がなく、図１の例に示すよう
に、長さにゆとりをもたせることなく真っ直ぐな状態で
あってもよい。しかし、大変形時の伸びに対応するため
に、長さにゆとりをもたせ蛇腹構造をとってもよい。従
来の布伸びしない耐火被覆は、免震積層ゴムの予想され
る最大変形時に対応する伸びの分だけ膜を折り畳む必要
があるが（図２参照）、本発明の耐火被覆は柔軟性に富
むので、蛇腹状に折り畳む場合でも、折り畳む膜の長さ
は従来品より少なくてよく、直線状に張った場合の１．
８倍以下の長さでよい。Since the refractory coating 13 of the present invention is made of a cured product of the silicone rubber composition, it is very flexible. Therefore, it is not necessary to adopt a structure folded as much as the bellows or the like as in the case of the conventional fireproof coating, and it may be in a straight state without any length as shown in the example of FIG. . However, in order to cope with the elongation at the time of large deformation, the length may have a margin and a bellows structure may be adopted. The conventional non-stretchable fire-resistant coating requires the film to be folded by an amount corresponding to the elongation corresponding to the expected maximum deformation of the seismic isolation laminated rubber (see FIG. 2). However, the fire-resistant coating of the present invention is rich in flexibility. Even when folded in a bellows shape, the length of the folded membrane may be shorter than that of the conventional product.
The length may be eight times or less.
【００１５】シリコーンゴム組成物の硬化物で断熱材１
４と耐火シート１６を製造するには、断熱材１４はシリ
コーンゴム組成物の発泡体であるのが好ましく、耐火シ
ート１６はシリコーンゴム組成物の非発泡体であるのが
好ましい。耐火シート１６がシリコーンゴム組成物の非
発泡体（非発泡性シリコーンゴム組成物を発泡させるこ
となく硬化させたもの）であると、耐熱性が高く耐引火
性も高く、非発泡体の緻密な表面構造により熱の反射率
も高いので好ましい。また、機械的強度を大きくできる
と共に伸びを大きくできるので追随性に優れる。断熱材
１４がシリコーンゴム組成物の発泡体であると、熱伝達
係数が低く断熱性に富み、さらには、発泡体に含まれる
空気によりさらに断熱効果が高まるので好ましい。Insulation material 1 comprising a cured product of a silicone rubber composition
In order to manufacture the refractory sheet 4 and the refractory sheet 16, the heat insulating material 14 is preferably a foam of a silicone rubber composition, and the refractory sheet 16 is preferably a non-foam of a silicone rubber composition. When the refractory sheet 16 is a non-foamed silicone rubber composition (a non-foamed silicone rubber composition cured without foaming), it has high heat resistance, high flammability resistance, and a dense non-foamed body. It is preferable because heat reflectance is high depending on the surface structure. Further, since the mechanical strength can be increased and the elongation can be increased, excellent followability can be obtained. It is preferable that the heat insulating material 14 is a foam of the silicone rubber composition because the heat transfer coefficient is low and the heat insulating property is high, and the air contained in the foam further enhances the heat insulating effect.
【００１６】本発明の耐火被覆１３の厚さは、取り付け
る免震積層ゴム１２のゴム層の組成や免震積層ゴム１２
と耐火被覆１３の間の空気層の幅により異なるが、３０
ｍｍ以上であることが好ましく、５０〜１５０ｍｍであ
ることがより好ましい。上述のように、非発泡性シリコ
ーンゴム組成物の硬化物よりなる耐火シート１６とシリ
コーンゴム組成物発泡体よりなる断熱材１４とを一体化
して２層にて耐火被覆１３とする場合は、例えば、耐火
シート１６と断熱材１４との膜厚を全体で１００ｍｍと
する場合は、耐火シート１６と断熱材１４の厚みをそれ
ぞれ１０、９０ｍｍとするのが好ましい。ただし、前述
したように、本発明では、断熱材１４一層、もしくは耐
火シート１６一層、各々単独で耐火被覆として用いても
よい。また、断熱材の両面を耐火シートで覆った３層構
造としてもよい。シリコーンゴム組成物の発泡体よりな
る断熱材１４一層で耐火被覆１３とする場合は、耐火被
覆の厚さは３０ｍｍ以上であることが好ましく、５０〜
１００ｍｍとするのがより好ましい。非発泡性シリコー
ンゴム組成物よりなる耐火シート１６一層で耐火被覆１
３とする場合も、耐火被覆の厚さは３０ｍｍ以上である
ことが好ましく、５０〜１００ｍｍとするのがより好ま
しい。また、シリコーンゴム組成物の発泡体よりなる断
熱材の両面を非発泡性シリコーンゴム組成物の硬化物よ
りなる耐火シートで覆った３層構造にて耐火被覆１３と
する場合は、全厚さを３０ｍｍ以上、好ましくは発泡体
の厚さを２０ｍｍ以上とし、非発泡体の厚さは、耐火被
覆の外側の非発泡体の厚さを１０ｍｍ以上、内側の非発
泡体の厚さを１．０ｍｍ以上としてもよい。耐火被覆１
３と免震積層ゴム１２との間に設けられる空気層の幅
は、断熱性を考慮して、１０ｍｍ以上が好ましく、３０
ｍｍ以上とするのがより好ましい。The thickness of the fireproof coating 13 of the present invention depends on the composition of the rubber layer of the seismic isolation laminated rubber 12 to be attached and the thickness of the seismic isolation laminated rubber 12.
30 depending on the width of the air layer between the
mm or more, more preferably 50 to 150 mm. As described above, when the fireproof sheet 16 made of the cured product of the non-foamable silicone rubber composition and the heat insulating material 14 made of the silicone rubber composition foam are integrated to form the fireproof coating 13 in two layers, for example, When the total thickness of the refractory sheet 16 and the heat insulating material 14 is 100 mm, the thickness of the refractory sheet 16 and the heat insulating material 14 is preferably set to 10, 90 mm, respectively. However, as described above, in the present invention, one layer of the heat insulating material or one layer of the fireproof sheet 16 may be used independently as a fireproof coating. Further, a three-layer structure in which both sides of the heat insulating material are covered with a fireproof sheet may be used. When the fireproof coating 13 is formed of one layer of the heat insulating material 14 made of a foam of the silicone rubber composition, the thickness of the fireproof coating is preferably 30 mm or more, and 50 to 50 mm.
More preferably, it is 100 mm. Fireproof coating 1 with one fireproof sheet 16 made of non-foamable silicone rubber composition
Also in the case of 3, the thickness of the refractory coating is preferably 30 mm or more, more preferably 50 to 100 mm. In the case where the fire-resistant coating 13 has a three-layer structure in which both sides of a heat insulating material made of a foam of the silicone rubber composition are covered with a fire-resistant sheet made of a cured product of the non-foamable silicone rubber composition, the total thickness is 30 mm or more, preferably the thickness of the foam is 20 mm or more, the thickness of the non-foam, the thickness of the non-foam outside the fireproof coating is 10 mm or more, the thickness of the non-foam inside is 1.0 mm It is good also as above. Fireproof coating 1
The width of the air layer provided between 3 and the seismic isolation laminated rubber 12 is preferably 10 mm or more in consideration of heat insulation.
mm or more is more preferable.
【００１７】本発明に用いる非発泡性シリコーンゴム組
成物は、硬化してゴム弾性を有するシリコーンゴムとな
り得るシリコーンゴム組成物であれば特に限定されな
い。このようなシリコーンゴム組成物としては、ビニル
基含有ジオルガノポリシロキサンとシリカ微粉末を主成
分として有機過酸化物の存在下に硬化する有機過酸化物
硬化型シリコーンゴム組成物、ビニル基含有ジオルガノ
ポリシロキサンとケイ素原子結合水素原子含有オルガノ
ハイドロジエンポリシロキサンとシリカ微粉末を主成分
として白金系触媒の存在下に硬化する付加反応硬化型シ
リコーンゴム組成物、ケイ素原子結合水酸基もしくは加
水分解性基含有ジオルガノポリシロキサンとシリカ微粉
末と加水分解性基含有オルガノシランを主成分として縮
合反応触媒の存在下に硬化する縮合反応硬化型シリコー
ンゴム組成物等が例示される。The non-foamable silicone rubber composition used in the present invention is not particularly limited as long as it is a silicone rubber composition that can be cured to form a silicone rubber having rubber elasticity. Examples of such a silicone rubber composition include an organic peroxide-curable silicone rubber composition comprising a vinyl group-containing diorganopolysiloxane and silica fine powder as main components and curing in the presence of an organic peroxide. Addition-curable silicone rubber composition containing organopolysiloxane, organohydrogenpolysiloxane containing silicon-bonded hydrogen atoms and silica fine powder and silica fine powder as main components and curing in the presence of a platinum-based catalyst, silicon-bonded hydroxyl group or hydrolyzable group Examples thereof include a condensation reaction-curable silicone rubber composition containing a diorganopolysiloxane, silica fine powder and a hydrolyzable group-containing organosilane as main components and curing in the presence of a condensation reaction catalyst.
【００１８】このようなシリコーンゴム組成物には、本
発明の特徴を損なわない範囲において、シリコーンゴム
組成物に添加されることが公知の添加剤を含有してよ
い。このような添加剤としては、硬化促進剤、難燃剤、
着色剤、耐熱剤、老化防止剤、酸化防止剤、帯電防止
剤、離型剤、熱伝導改良剤、揺変性付与剤、充填剤用分
散剤、反応制御剤、接着性付与剤、シランカップリング
剤、可塑剤、タレ防止剤、防腐剤、防黴剤、殺虫剤等が
挙げられる。Such a silicone rubber composition may contain additives known to be added to the silicone rubber composition as long as the characteristics of the present invention are not impaired. Such additives include curing accelerators, flame retardants,
Colorant, heat-resistant agent, anti-aging agent, antioxidant, antistatic agent, release agent, heat conduction improver, thixotropic agent, filler dispersant, reaction control agent, adhesion promoter, silane coupling Agents, plasticizers, anti-sagging agents, preservatives, fungicides, insecticides and the like.
【００１９】上記非発泡性シリコーンゴム組成物は、上
記成分をバンバリーミキサ、ニーダーミキサー等の混練
り機で混練し、必要に応じて加熱することにより製造す
ることができる。製造されたシリコーンゴム組成物は、
注型成形、金型加圧成形、押出成形等の種々の方法で成
形することができる。The above non-foamable silicone rubber composition can be produced by kneading the above components with a kneading machine such as a Banbury mixer or a kneader mixer and, if necessary, heating. The manufactured silicone rubber composition is
It can be formed by various methods such as cast molding, mold pressure molding, and extrusion molding.
【００２０】本発明に用いる非発泡性シリコーンゴム組
成物は、耐火性、断熱性に優れるので、免震積層ゴムの
性能が損なわれず、地震に伴う火災の発生後の余震等に
も十分免震積層ゴムの機能を維持することができる。ま
た、本発明に用いる非発泡性シリコーンゴム組成物の硬
化物の破断時の伸びは、５０％以上であるのが好まし
い。このような柔軟性を有すると、免震積層ゴムの剪断
歪みが２５０％以上変位しても、免震積層ゴムの変位に
追従することができる。このような非発泡性シリコーン
ゴム組成物の硬化物は、免震積層ゴム用耐火被覆そのも
のとしても、また、免震積層ゴム用耐火被覆の耐火シー
トとしても、好適である。Since the non-foamable silicone rubber composition used in the present invention is excellent in fire resistance and heat insulation, the performance of the seismic isolation laminated rubber is not impaired, and it is sufficiently isolated from aftershocks after a fire accompanying an earthquake. The function of the laminated rubber can be maintained. The elongation at break of the cured product of the non-foamable silicone rubber composition used in the present invention is preferably 50% or more. With such flexibility, even if the shear strain of the seismic isolation laminated rubber is displaced by 250% or more, it is possible to follow the displacement of the seismic isolation laminated rubber. The cured product of such a non-foamable silicone rubber composition is suitable as a fireproof coating for a seismic isolation laminated rubber itself, or as a fireproof sheet of a fireproof coating for a seismic isolated laminated rubber.
【００２１】本発明に用いる発泡性シリコーンゴム組成
物は、発泡しつつ硬化してシリコーンゴム発泡体になり
得るシリコーンゴム組成物である。シリコーンゴム発泡
体は、内部に微細なセルを有し、密度が５００ｋｇ／ｍ
3以下が好ましく、８０〜５００ｋｇ／ｍ3 がより好ま
しい。このような発泡性シリコーンゴム組成物の一つ
は、例えば、前記非発泡性シリコーンゴム組成物に発泡
剤を配合した組成物であって、加熱硬化時に発泡剤の熱
分解により発生するガスにより発泡体を得るシリコーン
ゴム組成物である。ここで使用される非発泡性シリコー
ンゴム組成物としては、加熱硬化型のシリコーンゴム組
成物であればよく、特に限定されない。発泡剤として
は、アゾビスイソブチロニトリル(AIBN)、アゾジカルボ
ン酸アミド等のアゾ化合物、 N,N- ジニトロソペンタメ
チレンテトラミン等のニトロソ化合物、ベンゼンスルホ
ニルヒドラジッド(BSH) 等のスルホニルヒドラジッド化
合物等が挙げられる。これらの発泡剤の配合量は、非発
泡性シリコーンゴム組成物１００重量部に対して３〜１
０重量部が好ましく、３〜６重量部が特に好ましい。３
重量部未満では発泡が十分ではなく、１０重量部を超え
ると発泡が激しすぎて発泡セル荒れが起こるので好まし
くない。このような発泡剤は、非発泡性シリコーンゴム
組成物に添加され混練されて用いられる。The foamable silicone rubber composition used in the present invention is a silicone rubber composition which can be cured while foaming to form a silicone rubber foam. The silicone rubber foam has fine cells inside and a density of 500 kg / m
3 or less, more preferably 80 to 500 kg / m 3 . One of such foamable silicone rubber compositions is, for example, a composition obtained by blending a foaming agent with the non-foamable silicone rubber composition, and is foamed by a gas generated by thermal decomposition of the foaming agent during heat curing. It is a silicone rubber composition for obtaining a body. The non-foamable silicone rubber composition used here is not particularly limited as long as it is a heat-curable silicone rubber composition. Examples of the foaming agent include azo compounds such as azobisisobutyronitrile (AIBN) and azodicarboxylic acid amide, nitroso compounds such as N, N-dinitrosopentamethylenetetramine, and sulfonyl hydrazides such as benzenesulfonyl hydrazide (BSH). And the like. The amount of these foaming agents is 3 to 1 based on 100 parts by weight of the non-foamable silicone rubber composition.
0 parts by weight is preferable, and 3 to 6 parts by weight is particularly preferable. 3
If the amount is less than 10 parts by weight, the foaming is not sufficient. If the amount is more than 10 parts by weight, the foaming is too severe and the foam cells are roughened. Such a foaming agent is used after being added to the non-foamable silicone rubber composition and kneaded.
【００２２】本発明に使用される他の発泡性シリコーン
ゴム組成物は、１分子中に２個以上のケイ素原子結合水
酸基を含有するジオルガノポリシロキサン、ビニル基含
有ジオルガノポリシロキサン、１分子中に２個以上のケ
イ素原子結合水素原子を有するオルガノハイドロジエン
ポリシロキサン、場合によってはアルコール類と、白金
化合物あるいは有機スズ化合物とを含有する組成物であ
る。このような組成物は、通常、液状であり、２液型の
組成物である。２液を混合することにより、室温または
加熱下で反応が起こり、水素ガスを発生しながら、発泡
して硬化する。普通に得られるその発泡倍率は、２〜１
５倍である。尚、この液状の発泡性シリコーンゴム組成
物には、流動性を調節したり、発泡体の強度を向上させ
るために、各種の充填剤を配合してもよい。このような
充填剤としては、沈降シリカ、煙霧質シリカ、これらの
シリカをジメチルジクロロシラン、ヘキサメチルジシラ
ザン、オクタメチルシクロテトラシロキサン等の有機ケ
イ素化合物で疎水化処理したもの、焼成シリカ、煙霧質
二酸化チタン、カーボンブラック等の補強充填剤が例示
される。Other foamable silicone rubber compositions used in the present invention include diorganopolysiloxanes containing two or more silicon-bonded hydroxyl groups in one molecule, diorganopolysiloxanes containing vinyl groups in one molecule, and Is a composition containing an organohydrogenpolysiloxane having two or more silicon-bonded hydrogen atoms, optionally an alcohol, and a platinum compound or an organotin compound. Such a composition is usually a liquid and is a two-part composition. By mixing the two liquids, a reaction occurs at room temperature or under heating, and foams and cures while generating hydrogen gas. The expansion ratio normally obtained is 2-1.
5 times. In addition, various fillers may be added to the liquid foamable silicone rubber composition in order to control the fluidity or to improve the strength of the foam. Examples of such a filler include precipitated silica, fumed silica, those obtained by subjecting these silicas to hydrophobic treatment with an organosilicon compound such as dimethyldichlorosilane, hexamethyldisilazane, and octamethylcyclotetrasiloxane, baked silica, and fumed silica. Reinforcing fillers such as titanium dioxide and carbon black are exemplified.
【００２３】上記２種の発泡性シリコーンゴム組成物に
は、本発明の特徴を損なわない範囲において、シリコー
ンゴム組成物に添加されることが公知の添加剤を含有し
てよい。このような添加剤としては、例えば、硬化促進
剤、難燃剤、着色剤、耐熱剤、老化防止剤、酸化防止
剤、帯電防止剤、離型剤、熱伝導改良剤、揺変性付与
剤、充填剤用分散剤、反応制御剤、接着性付与剤、シラ
ンカップリング剤、可塑剤、タレ防止剤、防腐剤、殺菌
剤、防黴剤、殺虫剤、溶剤等が挙げられる。The above two foamable silicone rubber compositions may contain additives which are known to be added to the silicone rubber composition as long as the characteristics of the present invention are not impaired. Examples of such additives include a curing accelerator, a flame retardant, a coloring agent, a heat-resistant agent, an antioxidant, an antioxidant, an antistatic agent, a release agent, a heat conduction improver, a thixotropic agent, and a filler. Dispersants, reaction control agents, adhesion promoters, silane coupling agents, plasticizers, anti-sagging agents, preservatives, bactericides, fungicides, insecticides, solvents and the like.
【００２４】上記２種の発泡性シリコーンゴム組成物
は、上記成分を、ニーダーミキサー等の混練り機で混練
し、あるいはプラネタリーミキサー等の混合機で混合
し、必要に応じて加熱することにより製造することがで
きる。製造されたシリコーンゴム組成物は、注型成形等
の種々の方法で成形することができ、所望の形状の硬化
物を得ることができる。The above two foamable silicone rubber compositions are prepared by kneading the above components with a kneader such as a kneader mixer or mixing with a mixer such as a planetary mixer and heating as necessary. Can be manufactured. The produced silicone rubber composition can be molded by various methods such as casting, and a cured product having a desired shape can be obtained.
【００２５】本発明に用いる発泡性シリコーンゴム組成
物は、硬化して柔軟性、断熱性、耐熱性に優れた発泡体
となる。このような発泡性シリコーンゴム組成物の発泡
体は、単独でも耐火性に優れるという効果を有する。こ
のような発泡性シリコーンゴム組成物の発泡体は、単独
で免震積層ゴム用耐火被覆としても好適であるし、ま
た、免震積層ゴム用耐火被覆を構成する耐火シートと一
体化して断熱材として用いるのにも好適である。The foamable silicone rubber composition used in the present invention cures to form a foam having excellent flexibility, heat insulation and heat resistance. The foam of the foamable silicone rubber composition alone has an effect of being excellent in fire resistance. The foam of the foamable silicone rubber composition is independently suitable as a fire-resistant coating for a seismic isolation laminated rubber, or is integrated with a fire-resistant sheet constituting the fire-resistant coating for a seismic isolation laminated rubber, and is used as a heat insulating material. It is also suitable for use as.
【００２６】本発明の耐火被覆の製造方法としては、前
記非発泡性シリコーンゴム組成物の硬化物と、前記発泡
性シリコーンゴム組成物の硬化物とを別々に成形、硬化
させ、得られた２種の硬化物を接着せずに重ねあわせて
作製する方法、前述の２種の硬化物を接着剤を介して張
り合わせて積層化して作製する方法、非発泡性シリコー
ンゴム組成物の硬化物をシート状に成形し、シート端部
を型枠で囲い、このシートの上に発泡性シリコーンゴム
組成物を注入し、必要に応じて加熱して発泡させ、非発
泡性シリコーンゴム組成物の硬化物と、前記発泡性シリ
コーンゴム組成物の硬化物とを、複合化して作製する方
法等が例示される。In the method for producing a refractory coating of the present invention, a cured product of the non-foamable silicone rubber composition and a cured product of the foamable silicone rubber composition are separately molded and cured. A method in which two types of cured products are laminated together without bonding, a method in which the two types of cured products are laminated through an adhesive, and a method in which a cured product of a non-foamable silicone rubber composition is formed into a sheet Formed into a shape, the sheet edge is surrounded by a mold, the foamable silicone rubber composition is poured onto the sheet, and heated and foamed as necessary, and a cured product of the non-foamable silicone rubber composition is formed. And a method of preparing a composite of the foamed silicone rubber composition and the cured product.
【００２７】本発明の耐火被覆は、上述の発泡性シリコ
ーンゴム組成物の発泡体を含むので、柔軟性に優れ、さ
らに断熱性、耐熱性にも優れるという効果を有する。特
に、柔軟性については、免震積層ゴムの剪断歪みの変位
２５０％を満足するために、耐火被覆の破断時の伸びが
５０％以上であるのが好ましい。断熱性、耐熱性につい
ては、発泡性、非発泡性のシリコーンゴム組成物の硬化
物よりなる耐火被覆を厚み１００ｍｍのシートとしシー
ト片面を１０３０℃に加熱して２時間経過後、シートの
反対側の面の表面温度が２００℃以下、特に１５０℃以
下であるのが好ましい。Since the fire-resistant coating of the present invention contains the foam of the above-mentioned expandable silicone rubber composition, it has excellent flexibility, heat insulation and heat resistance. In particular, as for flexibility, the elongation at break of the refractory coating is preferably 50% or more in order to satisfy the displacement of shear strain of the seismic isolation laminated rubber of 250%. Regarding heat insulation and heat resistance, a fire-resistant coating made of a cured product of a foaming and non-foaming silicone rubber composition was formed into a sheet having a thickness of 100 mm, and one side of the sheet was heated to 1030 ° C., and after 2 hours, the opposite side of the sheet was used. The surface temperature of the surface is preferably 200 ° C. or lower, particularly preferably 150 ° C. or lower.
【００２８】免震積層ゴム１２は、硬質板とゴム層と
が、繰り返し単位として積層されたものである。硬質板
は、免震積層ゴム１２内に安定板として用いるもので、
従来公知の各種鋼板等が使用でき、特に限定されるもの
ではないが、例えば、一般構造用鋼板、冷間圧延鋼板等
が用いられる。ゴム層としては、加硫ゴム、熱可塑性エ
ラストマー、熱硬化性エラストマー等が用いられ、特
に、高減衰特性を有する公知のゴムが用いられる。免震
積層ゴム１２の型状や構造は、施工される構造物の大き
さや型状、施工場所に応じて種々のものがあり、特に限
定されないが、建物用の場合には円柱状であるのが一般
的である。また、ゴム層と硬質板の厚さ、大きさおよび
形状は、免震積層ゴム１２が適用される用途に応じて適
宜決定されるものであり、特に限定されない。免震積層
ゴム１２の上面と下面のゴム層もしくは硬質板の表面に
は、鋼板のフランジ１８がネジ等により固着され、該フ
ランジには固定用ボルト穴が設けられ、このボルト穴を
介して構造物に接合される。The seismic isolation laminated rubber 12 is formed by laminating a hard plate and a rubber layer as a repeating unit. The hard plate is used as a stabilizer in the seismic isolation laminated rubber 12.
Conventionally known various steel plates and the like can be used and are not particularly limited. For example, general structural steel plates, cold-rolled steel plates and the like are used. As the rubber layer, a vulcanized rubber, a thermoplastic elastomer, a thermosetting elastomer, or the like is used, and in particular, a known rubber having high attenuation characteristics is used. The shape and structure of the seismic isolation laminated rubber 12 are various depending on the size and shape of the structure to be constructed and the construction place, and are not particularly limited. Is common. The thickness, size, and shape of the rubber layer and the hard plate are appropriately determined according to the application to which the seismic isolation laminated rubber 12 is applied, and are not particularly limited. A steel plate flange 18 is fixed to the upper and lower rubber layers or the hard plate surface of the seismic isolation laminated rubber 12 by screws or the like, and a fixing bolt hole is provided in the flange. Joined to the object.
【００２９】[0029]
【実施例】以下、実施例を示して本発明をさらに具体的
に説明する。尚、実施例中、耐火被覆の伸び、耐火被覆
の免震積層ゴムへの追従性、および、耐火被覆の断熱性
は、次に示す測定法に従って測定した。 １．耐火被覆の伸び 試験体の上面フランジと下面フランジに剪断方向の外力
を与え変形させ、耐火被覆が破断に至った時の耐火被覆
の伸びを測定し、その値を百分率で表した。単位はパー
セント（％）である。 ２．耐火被覆の免震積層ゴムへの追従性 試験体の上面フランジと下面フランジに剪断方向の外力
を与えて変形させ、耐火被覆の変形を目視にて測定評価
した。◎印は耐火被覆は免震積層ゴムの変形に完全に追
従していた、×印は耐火被覆は免震積層ゴムの変形に追
従可能であったことを示す。 ３．耐火被覆の断熱性 試験体の耐火被覆の外面に火炎を当て１０３０℃に加熱
し２時間経過後の免震積層ゴム表面の温度を測定した。
単位は〔℃〕である。The present invention will be described more specifically below with reference to examples. In the examples, the elongation of the refractory coating, the ability of the refractory coating to follow the seismic isolation laminated rubber, and the heat insulation of the refractory coating were measured according to the following measurement methods. 1. Elongation of Fire-Resistant Coating An external force in the shear direction was applied to the upper and lower flanges of the test piece to deform it, and the elongation of the fire-resistant coating when the fire-resistant coating was broken was measured, and the value was expressed as a percentage. The unit is percent (%). 2. Followability of Fire-Resistant Coating to Seismic Isolation Rubber The test specimen was deformed by applying an external force in the shear direction to the upper and lower flanges, and the deformation of the fire-resistant coating was visually evaluated. ◎ indicates that the fire-resistant coating completely followed the deformation of the seismic isolation rubber, and x indicates that the fire-resistant coating could follow the deformation of the seismic isolation rubber. 3. Heat insulation of the fireproof coating The flame was applied to the outer surface of the fireproof coating of the test specimen, heated to 1030 ° C., and the temperature of the surface of the seismic isolation laminated rubber after 2 hours was measured.
The unit is [° C].
【００３０】（実施例１）両末端メチルビニルシロキシ
基封鎖ジメチルシロキサン・メチルビニルシロキサン共
重合体生ゴム１００重量部に、比表面積２００ｍ2 ／ｇ
のヒュームドシリカ４０重量部を加えて均一に混合した
後、加硫剤として２，５−ジメチル−２，５−ビス（ｔ
−ブチルパーオキシ）ヘキサン０．５重量部を加えて混
合して、シリコーンゴム組成物を調製した。このシリコ
ーンゴム組成物の破断時の伸びは４００％であった。こ
の組成物をカレンダーロールで圧延した後、１８０℃の
加熱炉に連続的に通して、厚さ５ｍｍ、幅１ｍのシリコ
ーンゴムシートを作製した。次に、このシリコーンゴム
シートの表面を、＃２４０のサンドペーパーで軽く研磨
し、その後、シートの端部を囲むように、高さ１００ｍ
ｍ、幅２０ｍｍの金属枠を置き、流れ止めとした。発泡
性シリコーンゴム組成物として、水素ガスを発生しつつ
硬化する東レ・ダウコーニング・シリコーン社製ＳＥ１
９００を用い、ＳＥ１９００のＡ液とＢ液を重量比で
１：１に混合した混合液を、この金属枠内に流し込ん
だ。室温下、約２分で発泡は完了したが、さらに１０分
間放置した後、金属枠を取り除いた。厚さ５ｍｍのシリ
コーンゴムシートと、厚さ約１００ｍｍの発泡シリコー
ンゴムシートが一体化した幅約９５０ｍｍの複合シート
が得られた。発泡シリコーンゴムシートの密度は３３０
ｋｇ／ｍ3 であった。図２に示すように、外径７２０ｍ
ｍ、厚さ２０ｍｍの上面、下面のフランジに高さ２６４
ｍｍ、外径６００ｍｍの免震積層ゴムを組み付け、上記
の複合シートを上面、下面のフランジに取付け、試験体
を作製した。免震積層ゴムと耐火被覆との間の空気層の
幅は５０ｍｍとした。この試験体を用いて、上記の方法
で耐火被覆の物性試験（耐火被覆の伸び、耐火被覆の免
震積層ゴムへの追従性、および、耐火被覆の断熱性）を
測定し、その測定結果を表１に示した。(Example 1) A specific surface area of 200 m 2 / g was added to 100 parts by weight of dimethylsiloxane / methylvinylsiloxane copolymer raw rubber capped with methylvinylsiloxy groups at both ends.
After addition of 40 parts by weight of fumed silica and uniform mixing, 2,5-dimethyl-2,5-bis (t
(Butyl peroxy) hexane (0.5 part by weight) was added and mixed to prepare a silicone rubber composition. The elongation at break of this silicone rubber composition was 400%. After rolling this composition with a calender roll, it was continuously passed through a heating furnace at 180 ° C. to produce a silicone rubber sheet having a thickness of 5 mm and a width of 1 m. Next, the surface of the silicone rubber sheet was lightly polished with # 240 sandpaper, and then 100 m in height so as to surround the edge of the sheet.
A metal frame having a width of 20 mm and a width of 20 mm was placed to prevent flow. SE1 manufactured by Toray Dow Corning Silicone Co., which cures while generating hydrogen gas as a foamable silicone rubber composition
A mixed solution obtained by mixing the A1 solution and the B solution of SE1900 at a weight ratio of 1: 1 was poured into the metal frame by using 900. Foaming was completed in about 2 minutes at room temperature, but after leaving for another 10 minutes, the metal frame was removed. A composite sheet having a width of about 950 mm was obtained by integrating a silicone rubber sheet having a thickness of 5 mm and a foamed silicone rubber sheet having a thickness of about 100 mm. The density of foamed silicone rubber sheet is 330
kg / m 3 . As shown in FIG.
m, height 264 on top and bottom flanges 20mm thick
The above composite sheet was attached to upper and lower flanges, and a test specimen was prepared. The width of the air layer between the seismic isolation laminated rubber and the fireproof coating was 50 mm. Using this specimen, the physical properties test of the fireproof coating (elongation of the fireproof coating, the ability of the fireproof coating to follow the seismic isolation laminated rubber, and the heat insulating properties of the fireproof coating) were measured by the method described above, and the measurement results were measured. The results are shown in Table 1.
【００３１】（比較例１）セラミックブランケット（イ
ビデン製、厚さ５０ｍｍ）をセラミック繊維でなる布
（イビデン製、厚さ２ｍｍ）で被覆した耐火被覆を免震
積層ゴムの表面を囲うように、空気層の幅が５０ｍｍに
なりたわみのないように垂直に取付け実施例１と同様に
評価した。 （比較例２）比較例１と同様のセラミックブランケット
とセラミック繊維からなる耐火被覆を、図２に表す如く
積層ゴムに向かって外に凸状に取付け評価した。COMPARATIVE EXAMPLE 1 A fire-resistant coating obtained by coating a ceramic blanket (manufactured by Ibiden, thickness: 50 mm) with a cloth (manufactured by Ibiden, thickness: 2 mm) made of ceramic fiber was air-enclosed around the surface of the seismic isolation laminated rubber. The width of the layer was 50 mm, and it was mounted vertically so as not to bend and evaluated in the same manner as in Example 1. (Comparative Example 2) A fireproof coating made of the same ceramic blanket and ceramic fiber as that of Comparative Example 1 was attached to the laminated rubber so as to protrude outward as shown in FIG. 2 and evaluated.
【００３２】 [0032]
【００３３】[0033]
【発明の効果】本発明の免震積層ゴム用耐火被覆は、シ
リコーンゴム組成物の硬化物よりなるので、柔軟性、耐
熱性、断熱性に優れ、そのため蛇腹構造等をとらなくて
も免震積層ゴムの変形に追従することができる。また、
耐火被覆が被覆する免震積層ゴムを火災等の高温から防
御することができる。また、耐火性にも優れるので、耐
火被覆が被覆する免震積層ゴムを火災等の火炎から防御
することができる。本発明の耐火被覆は柔軟性に優れ蛇
腹構造を取らなくてもよいので、本発明の耐火被覆を取
り付けた免震積層ゴム全体の占めるスペースをコンパク
トにすることができる。さらに、成形性にも優れるの
で、たとえ蛇腹構造をとっても小さな凹凸構造を有する
耐火被覆とすることもできる。本発明の耐火被覆はシリ
コーンゴムベースなので、火災等により燃焼しても、人
体に有害なガス、煙が発生しない。The fire-resistant coating for a seismic isolation laminated rubber of the present invention is made of a cured product of a silicone rubber composition, and therefore has excellent flexibility, heat resistance and heat insulating properties. It can follow the deformation of the laminated rubber. Also,
The seismic isolation laminated rubber covered by the fireproof coating can be protected from high temperatures such as fire. Further, since it is excellent in fire resistance, the seismic isolation laminated rubber covered with the fire-resistant coating can be protected from flames such as fire. Since the fireproof coating of the present invention is excellent in flexibility and does not need to have a bellows structure, the space occupied by the entire seismic isolation laminated rubber to which the fireproof coating of the present invention is attached can be made compact. Furthermore, since it is excellent in moldability, even if it has a bellows structure, it is possible to form a fireproof coating having a small uneven structure. Since the refractory coating of the present invention is based on silicone rubber, even if it is burned by a fire or the like, no gas or smoke harmful to the human body is generated.
【図１】 本発明の耐火被覆を取り付けた免震ゴムの断
面図である。FIG. 1 is a sectional view of a seismic isolation rubber to which a fire-resistant coating of the present invention is attached.
【図２】 従来のセラミックファイバー単味からなる耐
火被覆をとりつけた免震ゴムの断面図である。FIG. 2 is a cross-sectional view of a conventional seismic isolation rubber with a fire-resistant coating made of only ceramic fiber.
１０ 支承体 １２ 免震ゴム １３ 耐火被覆 １４ 発泡性シリコーンゴム組成物の発泡体よりなる断
熱材 １６ 非発泡性シリコーンゴム組成物の硬化物よりなる
耐火シート １８ フランジ ２０ セラミックファイバーよりなる耐火被覆DESCRIPTION OF SYMBOLS 10 Bearing body 12 Seismic isolation rubber 13 Fireproof coating 14 Thermal insulation material made of foam of foaming silicone rubber composition 16 Fireproof sheet made of cured material of non-foaming silicone rubber composition 18 Flange 20 Fireproof coating made of ceramic fiber
フロントページの続き (72)発明者 新見 英雄 千葉県市原市千種海岸２番２ 東レ・ダウ コーニング・シリコーン株式会社研究開発 本部内Continued on the front page (72) Inventor Hideo Niimi 2-2 Chikusa Beach, Ichihara-shi, Chiba Dow Corning Silicone Co., Ltd.
Claims (5)
震積層ゴム用耐火被覆。1. A fire-resistant coating for a seismic isolation laminated rubber comprising a cured product of a silicone rubber composition.
泡性シリコーンゴム組成物の硬化物と非発泡性シリコー
ンゴム組成物の硬化物との積層物である請求項１に記載
の免震積層ゴム用耐火被覆。2. The seismic isolation laminate according to claim 1, wherein the cured product of the silicone rubber composition is a laminate of a cured product of a foamable silicone rubber composition and a cured product of a non-foamable silicone rubber composition. Fireproof coating for rubber.
泡性シリコーンゴム組成物の硬化物と非発泡性シリコー
ンゴム組成物の硬化物とを複合化してなる請求項１に記
載の免震積層ゴム用耐火被覆。3. The seismic isolation laminate according to claim 1, wherein the cured product of the silicone rubber composition is a composite of a cured product of a foamable silicone rubber composition and a cured product of a non-foamable silicone rubber composition. Fireproof coating for rubber.
物の破断時の伸びが５０％以上である請求項２または３
に記載の免震積層ゴム用耐火被覆。4. The elongation at break of a cured product of the non-foamable silicone rubber composition is 50% or more.
The fireproof coating for seismic isolation laminated rubber described in 4.
が、密度が５００ｋｇ／ｍ3 以下のシリコーンゴム発泡
体である請求項２または３に記載の免震積層ゴム用耐火
被覆。5. The fire-resistant coating for a seismic isolation laminated rubber according to claim 2, wherein the cured product of the foamable silicone rubber composition is a silicone rubber foam having a density of 500 kg / m 3 or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5034298A JPH11247326A (en) | 1998-03-03 | 1998-03-03 | Fire resistant covering for base isolation laminated rubber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5034298A JPH11247326A (en) | 1998-03-03 | 1998-03-03 | Fire resistant covering for base isolation laminated rubber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11247326A true JPH11247326A (en) | 1999-09-14 |
Family
ID=12856257
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5034298A Pending JPH11247326A (en) | 1998-03-03 | 1998-03-03 | Fire resistant covering for base isolation laminated rubber |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11247326A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013053291A (en) * | 2011-08-08 | 2013-03-21 | Nitto Denko Corp | Adhesive tape or sheet |
| JP7024148B1 (en) * | 2021-04-22 | 2022-02-22 | 富士高分子工業株式会社 | Silicone laminate |
| WO2022224468A1 (en) * | 2021-04-22 | 2022-10-27 | 富士高分子工業株式会社 | Silicone multilayer body |
| WO2023191022A1 (en) * | 2022-03-31 | 2023-10-05 | 株式会社イノアックコーポレーション | Heat-resistant material |
-
1998
- 1998-03-03 JP JP5034298A patent/JPH11247326A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013053291A (en) * | 2011-08-08 | 2013-03-21 | Nitto Denko Corp | Adhesive tape or sheet |
| JP7024148B1 (en) * | 2021-04-22 | 2022-02-22 | 富士高分子工業株式会社 | Silicone laminate |
| WO2022224468A1 (en) * | 2021-04-22 | 2022-10-27 | 富士高分子工業株式会社 | Silicone multilayer body |
| WO2023191022A1 (en) * | 2022-03-31 | 2023-10-05 | 株式会社イノアックコーポレーション | Heat-resistant material |
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