JPH04219352A - Transparent heat insulating material - Google Patents
Transparent heat insulating materialInfo
- Publication number
- JPH04219352A JPH04219352A JP2412148A JP41214890A JPH04219352A JP H04219352 A JPH04219352 A JP H04219352A JP 2412148 A JP2412148 A JP 2412148A JP 41214890 A JP41214890 A JP 41214890A JP H04219352 A JPH04219352 A JP H04219352A
- Authority
- JP
- Japan
- Prior art keywords
- heat insulating
- insulating material
- water content
- weight
- transparent
- 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
- 239000011810 insulating material Substances 0.000 title claims abstract description 37
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 84
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 31
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 28
- 235000019353 potassium silicate Nutrition 0.000 claims abstract description 25
- 239000002245 particle Substances 0.000 claims abstract description 17
- 229910052681 coesite Inorganic materials 0.000 abstract description 13
- 229910052906 cristobalite Inorganic materials 0.000 abstract description 13
- 235000012239 silicon dioxide Nutrition 0.000 abstract description 13
- 229910052682 stishovite Inorganic materials 0.000 abstract description 13
- 229910052905 tridymite Inorganic materials 0.000 abstract description 13
- 239000000741 silica gel Substances 0.000 abstract description 10
- 229910002027 silica gel Inorganic materials 0.000 abstract description 10
- 239000011521 glass Substances 0.000 abstract description 9
- 239000000203 mixture Substances 0.000 abstract description 9
- 239000000843 powder Substances 0.000 abstract description 9
- 229910052911 sodium silicate Inorganic materials 0.000 abstract description 9
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 abstract description 7
- 238000010438 heat treatment Methods 0.000 abstract description 7
- 238000002156 mixing Methods 0.000 abstract description 4
- 239000000853 adhesive Substances 0.000 abstract description 3
- 230000001070 adhesive effect Effects 0.000 abstract description 3
- 125000006850 spacer group Chemical group 0.000 abstract description 3
- 231100000614 poison Toxicity 0.000 abstract 1
- 230000007096 poisonous effect Effects 0.000 abstract 1
- 235000019795 sodium metasilicate Nutrition 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 10
- 239000000499 gel Substances 0.000 description 9
- 239000004115 Sodium Silicate Substances 0.000 description 8
- 238000003756 stirring Methods 0.000 description 8
- 239000004111 Potassium silicate Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 229910052913 potassium silicate Inorganic materials 0.000 description 5
- NNHHDJVEYQHLHG-UHFFFAOYSA-N potassium silicate Chemical compound [K+].[K+].[O-][Si]([O-])=O NNHHDJVEYQHLHG-UHFFFAOYSA-N 0.000 description 5
- 238000009413 insulation Methods 0.000 description 4
- 229910008051 Si-OH Chemical group 0.000 description 3
- 229910006358 Si—OH Chemical group 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000012774 insulation material Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 description 2
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 239000002341 toxic gas Substances 0.000 description 2
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- SXRSQZLOMIGNAQ-UHFFFAOYSA-N Glutaraldehyde Chemical compound O=CCCCC=O SXRSQZLOMIGNAQ-UHFFFAOYSA-N 0.000 description 1
- 229910003849 O-Si Inorganic materials 0.000 description 1
- 229910003872 O—Si Inorganic materials 0.000 description 1
- 229910002808 Si–O–Si Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- 235000011148 calcium chloride Nutrition 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000005357 flat glass Substances 0.000 description 1
- 238000001879 gelation Methods 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
- B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
- B32B17/069—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of intumescent material
Landscapes
- Joining Of Glass To Other Materials (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、ビルや百貨店、スーパ
ー等のように床面積の広い建物において、所定面積ごと
に区画する事により、火災発生時の延焼を最小限度に抑
える耐火壁に使用される透明断熱材に関するものである
。[Industrial Application Field] The present invention is used for fireproof walls in buildings with large floor areas such as buildings, department stores, and supermarkets, which minimize the spread of fire in the event of a fire by dividing the area into sections. The present invention relates to transparent heat insulating materials.
【０００２】0002
【従来の技術】従来より耐火壁としては、主にコンクリ
ート、鉄、レンガ等の不透明材料が使用されているが、
近年、消火活動のし易さやデザイン等の面から採光性の
ある材料が要求されつつあり、上記した不透明材料に代
わって、複数の板ガラスの間に透明断熱材を挟み込んで
なる透明耐火壁が各種提案されている。[Prior Art] Conventionally, opaque materials such as concrete, iron, and brick have been mainly used for fireproof walls.
In recent years, there has been a growing demand for materials that let in light from the standpoint of ease of firefighting and design, and instead of the opaque materials mentioned above, various types of transparent fireproof walls made by sandwiching transparent heat insulating material between multiple sheets of glass are being used. Proposed.
【０００３】例えば、特開昭５８−１２０５４８号公報
には、ケイ酸ナトリウムのＳｉＯ２ ／Ｎａ２ Ｏのモ
ル比が３．７〜３．９の水ガラスからなる透明断熱材を
２枚の板ガラスの間に挟み込んでなる耐火壁が開示され
、また特開平１−２６４９４２号公報には、ポリビニル
アルコールの水性ゲルからなる透明断熱材を２枚の板ガ
ラスの間に挟み込んでなる耐火壁が開示されている。For example, Japanese Patent Application Laid-open No. 58-120548 discloses that a transparent heat insulating material made of water glass having a molar ratio of SiO2/Na2O of sodium silicate of 3.7 to 3.9 is placed between two sheets of glass. JP-A-1-264942 discloses a fireproof wall in which a transparent heat insulating material made of aqueous gel of polyvinyl alcohol is sandwiched between two sheets of glass.
【０００４】0004
【発明が解決しようとする課題】しかしながら特開昭５
８−１２０５４８号公報の耐火壁は、断熱材の含水率が
低いため、断熱性能が低いと共に密度が高いという問題
を有し、また特開平１−２６４９４２号公報の耐火壁は
、断熱材としてポリビニルアルコールのゲルを使用する
ため、加熱時に著しい悪臭と煙を発生するという問題を
有している。[Problem to be solved by the invention] However, in JP-A No. 5
The fireproof wall disclosed in Japanese Patent Publication No. 8-120548 has a problem of low heat insulation performance and high density due to the low water content of the heat insulating material. Since alcohol gel is used, there is a problem in that it generates a significant odor and smoke when heated.
【０００５】本発明は、上記事情に鑑みなされたもので
あり、高い断熱性能を有し、加熱時に有毒ガスを発生す
ることがなく、しかも密度が小さいため、複数枚の板ガ
ラスの間に挟み込んで大型の耐火壁を作製しても、比較
的軽量となる透明断熱材を提供することを目的とする。The present invention was developed in view of the above circumstances, and has high heat insulation performance, does not generate toxic gas when heated, and has a low density, so it can be sandwiched between multiple sheets of glass. The purpose of the present invention is to provide a transparent heat insulating material that is relatively lightweight even when a large fireproof wall is manufactured.
【０００６】[0006]
【課題を解決するための手段】本発明の透明断熱材は、
水ガラスと、平均粒径が５０ｎｍ以下のシリカからなり
、全シリカ濃度が４〜３７重量％、含水率が６０重量％
以上であることを特徴とする。[Means for solving the problems] The transparent heat insulating material of the present invention is
Consists of water glass and silica with an average particle size of 50 nm or less, with a total silica concentration of 4 to 37% by weight and a water content of 60% by weight.
It is characterized by the above.
【０００７】この種の断熱材は、加熱されても沸騰した
り、流出しないように硬化していることが要求され、本
発明におけるシリカは、断熱材を硬化させるためのネッ
トワークを形成する成分として作用する。すなわちシリ
カの使用形態、混合割合、粒径を適宜選択することによ
って水ガラスを所望の硬さのゲルに変化させることが可
能となる。さらにシリカは、水ガラスが加熱された時の
発泡状態をコントロールする作用も有しており、混合割
合を適宜選択することによって所望の発泡状態にするこ
とが可能となる。シリカは、微粒子状のシリカゲルまた
はコロイド状の水性ゾルのいずれの形態でも使用可能で
ある。[0007] This type of heat insulating material is required to be hardened so that it will not boil or flow out even when heated, and silica in the present invention is used as a component that forms a network for hardening the heat insulating material. act. That is, by appropriately selecting the usage form, mixing ratio, and particle size of silica, it is possible to change water glass into a gel of desired hardness. Furthermore, silica also has the effect of controlling the foaming state when water glass is heated, and by appropriately selecting the mixing ratio, it is possible to achieve a desired foaming state. Silica can be used in the form of either particulate silica gel or colloidal aqueous sol.
【０００８】本発明における透明断熱材の含水率は、シ
リカの混合割合及び粒径で決定されるものであり、その
値を６０重量％以上にした理由は、６０重量％以下では
、水の蒸発が少ないため、熱エネルギーの消費量が少な
くなり、十分な断熱性能が得られないこと、密度が大き
くなるために耐火壁の重量が大きくなりやすいこと、シ
リカとの混合時に硬化が速くなるために透明度が低下し
やすいこと等の問題が生じるからである。含水率の好ま
しい値は、６５〜９０重量％である。[0008] The moisture content of the transparent heat insulating material in the present invention is determined by the mixing ratio of silica and the particle size. , the amount of thermal energy consumed is low, and sufficient insulation performance cannot be obtained; the weight of the fireproof wall tends to be large due to the increased density; and the curing is faster when mixed with silica. This is because problems such as easy reduction in transparency arise. A preferred value for the water content is 65 to 90% by weight.
【０００９】本発明における水ガラスとしては、ケイ酸
ナトリウム、ケイ酸カリウムが適している。[0009] As the water glass in the present invention, sodium silicate and potassium silicate are suitable.
【００１０】0010
【作用】本発明の透明断熱材は、シリカが水ガラス中に
溶解したり、あるいはその表面のＳｉ−ＯＨ基が水ガラ
ス中のＳｉ−ＯＨ基と反応してＳｉ−Ｏ−Ｓｉのネット
ワークを作ることによって、ゲル化するために流動性が
低下し、加熱されても高い粘度を維持するため沸騰の危
険性がなくなる。しかしながら平均粒径が５０ｎｍ以上
のシリカを使用すると、比表面積が小さくなるため、溶
解速度が低下すると共にその表面のＳｉ−ＯＨ基のＳｉ
−Ｏ−Ｓｉネットワーク形成が不充分となる。全シリカ
濃度が４重量％以下の場合は、透明断熱材がネットワー
クが充分発達しないためゲル化せず、一方３７重量％以
上の場合は、透明体が得られなくなる。[Function] In the transparent heat insulating material of the present invention, silica dissolves in water glass, or Si-OH groups on its surface react with Si-OH groups in water glass to form a Si-O-Si network. This reduces fluidity due to gelation and maintains high viscosity even when heated, eliminating the risk of boiling. However, when silica with an average particle size of 50 nm or more is used, the specific surface area becomes small, so the dissolution rate decreases and the Si-OH groups on the surface
-O-Si network formation becomes insufficient. If the total silica concentration is less than 4% by weight, the network of the transparent heat insulating material will not be sufficiently developed and it will not gel, while if it is more than 37% by weight, a transparent body will not be obtained.
【００１１】また本発明の透明断熱材は、全て無機物か
ら構成されるため、加熱されても水蒸気以外は、何も放
出せず、完全に無害である。Furthermore, since the transparent heat insulating material of the present invention is entirely composed of inorganic materials, it does not emit anything except water vapor even when heated, and is completely harmless.
【００１２】0012
【実施例】以下、本発明の透明断熱材を実施例及び比較
例に基づいて詳細に説明する。[Examples] Hereinafter, the transparent heat insulating material of the present invention will be explained in detail based on Examples and Comparative Examples.
【００１３】実施例１
ケイ酸ナトリウムのＳｉＯ２ ／Ｎａ２ Ｏのモル比が
３．４の水ガラスに、平均粒径が７ｎｍのシリカゲル粉
末を全シリカ濃度が１３．５重量％になるように混合し
、さらに含水率が８５重量％になるように水分を調節後
、充分に攪拌することによって断熱材を作製した。Example 1 Silica gel powder with an average particle size of 7 nm was mixed with water glass having a molar ratio of SiO2/Na2O of sodium silicate of 3.4 so that the total silica concentration was 13.5% by weight. After adjusting the water content so that the water content was 85% by weight, the mixture was thoroughly stirred to produce a heat insulating material.
【００１４】実施例２
ケイ酸ナトリウムのＳｉＯ２ ／Ｎａ２ Ｏのモル比が
２．１の水ガラスに、平均粒径が７ｎｍのシリカゲル粉
末を全シリカ濃度が２５重量％になるように混合し、さ
らに含水率が７０重量％になるように水分を調節後、充
分に攪拌することによって断熱材を作製した。Example 2 Silica gel powder with an average particle size of 7 nm was mixed with water glass having a molar ratio of SiO2/Na2O of sodium silicate of 2.1 so that the total silica concentration was 25% by weight, and then After adjusting the water content so that the water content was 70% by weight, the mixture was sufficiently stirred to produce a heat insulating material.
【００１５】実施例３
ケイ酸ナトリウムのＳｉＯ２ ／Ｎａ２ Ｏのモル比が
４．０の水ガラスに、平均粒径が４５ｎｍのシリカゲル
粉末を全シリカ濃度が３１重量％になるように混合し、
さらに含水率が６５重量％になるように水分を調節後、
充分に攪拌することによって断熱材を作製した。Example 3 Silica gel powder with an average particle size of 45 nm was mixed with water glass having a molar ratio of SiO2/Na2O of sodium silicate of 4.0 so that the total silica concentration was 31% by weight.
Furthermore, after adjusting the water content so that the water content is 65% by weight,
A heat insulating material was produced by stirring thoroughly.
【００１６】実施例４
ケイ酸カリウムのＳｉＯ２ ／Ｋ２ Ｏのモル比が３．
４の水ガラスに、平均粒径が２０ｎｍのシリカゲル粉末
を全シリカ濃度が１０重量％になるように混合し、さら
に含水率が８８重量％になるように水分を調節後、充分
に攪拌することによって断熱材を作製した。Example 4 Potassium silicate has a molar ratio of SiO2/K2O of 3.
Mix silica gel powder with an average particle size of 20 nm into the water glass in step 4 so that the total silica concentration is 10% by weight, further adjust the water content so that the water content is 88% by weight, and stir thoroughly. A heat insulating material was produced using the following method.
【００１７】実施例５
ケイ酸カリウムのＳｉＯ２ ／Ｋ２ Ｏのモル比が４．
０の水ガラスに、平均粒径が７ｎｍのシリカゲル粉末を
全シリカ濃度が２３重量％になるように混合し、さらに
含水率が７２重量％になるように水分を調節後、充分に
攪拌することによって断熱材を作製した。Example 5 Potassium silicate has a molar ratio of SiO2/K2O of 4.
Mix silica gel powder with an average particle size of 7 nm in 0.0 water glass so that the total silica concentration is 23% by weight, further adjust the water content so that the water content is 72% by weight, and stir thoroughly. A heat insulating material was produced using the following method.
【００１８】実施例６
ケイ酸ナトリウムのＳｉＯ２ ／Ｋ２ Ｏのモル比が４
．０の水ガラスに、平均粒径が１６ｎｍの水性シリカゾ
ルを全シリカ濃度が２０重量％になるように混合し、さ
らに含水率が７５重量％になるように水分を調節後、充
分に攪拌することによって断熱材を作製した。Example 6 The molar ratio of SiO2/K2O in sodium silicate was 4.
．． Mix an aqueous silica sol with an average particle size of 16 nm in 0.0 water glass so that the total silica concentration is 20% by weight, further adjust the water content so that the water content is 75% by weight, and stir thoroughly. A heat insulating material was produced using the following method.
【００１９】実施例７
ケイ酸カリウムのＳｉＯ２ ／Ｋ２ Ｏのモル比が３．
４の水ガラスに、平均粒径が１０ｎｍの水性シリカゾル
を全シリカ濃度が７重量％になるように混合し、さらに
含水率が９２重量％になるように水分を調節後、充分に
攪拌することによって断熱材を作製した。Example 7 Potassium silicate has a molar ratio of SiO2/K2O of 3.
Mix an aqueous silica sol with an average particle size of 10 nm into the water glass from step 4 so that the total silica concentration is 7% by weight, and then adjust the water content so that the water content is 92% by weight, and then stir thoroughly. A heat insulating material was produced using the following method.
【００２０】比較例１
ケイ酸ナトリウムのＳｉＯ２ ／Ｎａ２ Ｏのモル比が
２．１の水ガラスに、平均粒径が７ｎｍのシリカゲル粉
末を全シリカ濃度が４０重量％になるように混合し、さ
らに含水率が５０重量％になるように水分を調節後、充
分に攪拌することによって断熱材を作製した。Comparative Example 1 Silica gel powder with an average particle size of 7 nm was mixed with water glass having a molar ratio of SiO2/Na2O of sodium silicate of 2.1 so that the total silica concentration was 40% by weight, and then After adjusting the water content so that the water content was 50% by weight, the mixture was sufficiently stirred to produce a heat insulating material.
【００２１】比較例２
ケイ酸カリウムのＳｉＯ２ ／Ｋ２ Ｏのモル比が３．
４の水ガラスに、平均粒径が９０ｎｍのシリカゲル粉末
を全シリカ濃度が２５重量％になるように混合し、さら
に含水率が６０重量％になるように水分を調節後、充分
に攪拌することによって断熱材を作製した。Comparative Example 2 Potassium silicate had a molar ratio of SiO2/K2O of 3.
Mix silica gel powder with an average particle size of 90 nm into the water glass in Step 4 so that the total silica concentration is 25% by weight, further adjust the water content so that the water content is 60% by weight, and then stir thoroughly. A heat insulating material was produced using the following method.
【００２２】比較例３
ケイ酸ナトリウムのＳｉＯ２ ／Ｎａ２ Ｏのモル比が
３．７の水ガラスに、グリセリンを６重量％混合し、充
分に攪拌した後、含水率が２５重量％になるように水分
を調節することによって断熱材を作製した。Comparative Example 3 6% by weight of glycerin was mixed into water glass with a molar ratio of SiO2/Na2O of sodium silicate of 3.7, and after thorough stirring, the water content was adjusted to 25% by weight. The insulation material was made by controlling the moisture content.
【００２３】比較例４
ポリビニルアルコール１００重量部に、グルタルジアル
デヒドを０．８重量部、ＣａＣｌ２ を５７０重量部混
合し、含水率が８０重量％になるように水分を調節後、
充分に攪拌することによって断熱材を作製した。Comparative Example 4 0.8 parts by weight of glutardialdehyde and 570 parts by weight of CaCl2 were mixed with 100 parts by weight of polyvinyl alcohol, and after adjusting the water content so that the water content was 80% by weight,
A heat insulating material was produced by stirring thoroughly.
【００２４】以上の実施例及び比較例の断熱材の密度を
測定すると共に外観の観察を行い、その結果を表１に示
した。The densities of the heat insulating materials of the above Examples and Comparative Examples were measured and the appearance was observed, and the results are shown in Table 1.
【００２５】さらに図１に示すように、各断熱材１０を
耐熱接着剤１１、１１を用いてスペーサ１２、１２によ
り対向間隔Ａを２０ｍｍに設定して保持した厚さＢが５
ｍｍの２枚の透明結晶化ガラス板（ファイアライト：日
本電気硝子（株） 製）１３、１３間に設けることによ
って加熱試験体を作製し、それらを面加熱式電気ヒータ
ーにセットし、透明結晶化ガラス板１３、１３の一方側
から建設省告示第１１２５号に定められた標準加熱曲線
に従って加熱しながら、加熱開始後１時間経過した時点
での非加熱側の透明結晶化ガラス板１３の温度（非加熱
側温度）を測定し、また加熱に伴う断熱材の流動性、有
害ガスの発生の有無を観察した結果を表１に示した。Furthermore, as shown in FIG. 1, each heat insulating material 10 is held by spacers 12, 12 using heat-resistant adhesives 11, 11, with the opposing distance A set to 20 mm, so that the thickness B is 5 mm.
A heated test specimen was prepared by placing it between two transparent crystallized glass plates (Firelight: manufactured by Nippon Electric Glass Co., Ltd.) 13, 13 mm in diameter, and set in a surface heating type electric heater. While heating from one side of the crystallized glass plates 13, 13 according to the standard heating curve specified in Ministry of Construction Notification No. 1125, the temperature of the transparent crystallized glass plate 13 on the non-heated side after 1 hour has passed from the start of heating. Table 1 shows the results of measuring the temperature on the non-heated side and observing the fluidity of the heat insulating material and the presence or absence of generation of harmful gases during heating.
【００２６】[0026]
【表１】[Table 1]
【００２７】表から明らかなように比較例１の断熱材は
、含水率が低いために密度が大きく、且つ硬化が速すぎ
て透明なゲルが得られず、比較例２の断熱材は、シリカ
の粒径が大きいために透明のゲルが得られず、加熱によ
って沸騰、突沸し、非常に危険であると共に断熱材が流
出して断熱効果がなくなった。また比較例３の断熱材は
、含水率が低すぎて断熱性が悪く、比較例４では有機物
の燃焼により著しい煙、悪臭が発生した。As is clear from the table, the heat insulating material of Comparative Example 1 has a high density due to its low water content and hardens too quickly to form a transparent gel, and the heat insulating material of Comparative Example 2 is made of silica. Due to the large particle size of the gel, it was not possible to obtain a transparent gel, which caused boiling and bumping when heated, which was extremely dangerous, and caused the insulation material to flow out and lose its insulation effect. Further, the heat insulating material of Comparative Example 3 had a water content that was too low and had poor heat insulating properties, and in Comparative Example 4, significant smoke and bad odor were generated due to combustion of organic matter.
【００２８】一方、実施例の断熱材は、何れも密度が小
さく、透明なゲルが得られ、さらにこれらのゲルは、加
熱時に良好な断熱性を示し、加熱により発生したガスは
、水蒸気のみであって全く無害であった。On the other hand, the heat insulating materials of the examples all have low density and transparent gels, and furthermore, these gels exhibit good heat insulating properties when heated, and the gas generated by heating is only water vapor. It was completely harmless.
【００２９】[0029]
【発明の効果】以上のように本発明の透明断熱材は、高
い透明度と耐熱性能を有し、加熱時に有毒ガスを発生す
ることがなく、しかも密度が小さいために板ガラスを使
用した耐火壁の断熱材として好適である。Effects of the Invention As described above, the transparent heat insulating material of the present invention has high transparency and heat resistance, does not generate toxic gas when heated, and has a low density, so it is suitable for fireproof walls using plate glass. Suitable as a heat insulating material.
【図１】加熱試験体の縦断面図である。FIG. 1 is a longitudinal cross-sectional view of a heated test specimen.
１０ 断熱材 １１ 耐熱接着剤 １２ スペーサ １３ 透明結晶化ガラス 10 Insulation material 11 Heat-resistant adhesive 12 Spacer 13 Transparent crystallized glass
Claims (1)
シリカからなり、全シリカ濃度が４〜３７重量％、含水
率が６０重量％以上であることを特徴とする透明断熱材
。1. A transparent heat insulating material comprising water glass and silica having an average particle size of 50 nm or less, having a total silica concentration of 4 to 37% by weight and a water content of 60% by weight or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2412148A JPH04219352A (en) | 1990-12-18 | 1990-12-18 | Transparent heat insulating material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2412148A JPH04219352A (en) | 1990-12-18 | 1990-12-18 | Transparent heat insulating material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04219352A true JPH04219352A (en) | 1992-08-10 |
Family
ID=18521025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2412148A Pending JPH04219352A (en) | 1990-12-18 | 1990-12-18 | Transparent heat insulating material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04219352A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2150404B1 (en) | 2007-05-25 | 2017-06-21 | AGC Glass Europe | Fireproof glazing |
-
1990
- 1990-12-18 JP JP2412148A patent/JPH04219352A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2150404B1 (en) | 2007-05-25 | 2017-06-21 | AGC Glass Europe | Fireproof glazing |
| EP2150404B2 (en) † | 2007-05-25 | 2020-01-01 | AGC Glass Europe | Fireproof glazing |
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