JPS63222028A - Production of inorganic foam having formed skin layer - Google Patents
Production of inorganic foam having formed skin layerInfo
- Publication number
- JPS63222028A JPS63222028A JP5196387A JP5196387A JPS63222028A JP S63222028 A JPS63222028 A JP S63222028A JP 5196387 A JP5196387 A JP 5196387A JP 5196387 A JP5196387 A JP 5196387A JP S63222028 A JPS63222028 A JP S63222028A
- Authority
- JP
- Japan
- Prior art keywords
- raw material
- inorganic
- foam
- powder
- foaming
- 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.)
- Granted
Links
- 239000006260 foam Substances 0.000 title claims abstract description 50
- 238000004519 manufacturing process Methods 0.000 title claims description 10
- 238000005187 foaming Methods 0.000 claims abstract description 53
- 239000002994 raw material Substances 0.000 claims abstract description 45
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 18
- 238000005507 spraying Methods 0.000 claims abstract description 7
- 239000004088 foaming agent Substances 0.000 claims abstract description 5
- 239000000203 mixture Substances 0.000 claims abstract description 5
- 239000000843 powder Substances 0.000 abstract description 24
- 239000011248 coating agent Substances 0.000 abstract description 16
- 238000000576 coating method Methods 0.000 abstract description 16
- 239000000463 material Substances 0.000 abstract description 6
- 239000007921 spray Substances 0.000 abstract description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 5
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 238000010097 foam moulding Methods 0.000 abstract 4
- 238000012856 packing Methods 0.000 abstract 2
- 238000001354 calcination Methods 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 29
- 238000010304 firing Methods 0.000 description 7
- 239000006082 mold release agent Substances 0.000 description 7
- 239000011521 glass Substances 0.000 description 6
- 229910052500 inorganic mineral Inorganic materials 0.000 description 5
- 239000011707 mineral Substances 0.000 description 5
- 241000975357 Salangichthys microdon Species 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- 239000004604 Blowing Agent Substances 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- GNTDGMZSJNCJKK-UHFFFAOYSA-N divanadium pentaoxide Chemical compound O=[V](=O)O[V](=O)=O GNTDGMZSJNCJKK-UHFFFAOYSA-N 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 229920000609 methyl cellulose Polymers 0.000 description 2
- 239000001923 methylcellulose Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229940098458 powder spray Drugs 0.000 description 2
- 229910010271 silicon carbide Inorganic materials 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910052582 BN Inorganic materials 0.000 description 1
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000010410 dusting Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000000077 insect repellent Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000005306 natural glass Substances 0.000 description 1
- 239000002667 nucleating agent Substances 0.000 description 1
- 229910001562 pearlite Inorganic materials 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
Landscapes
- Producing Shaped Articles From Materials (AREA)
- Glass Compositions (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、不燃建材、不燃保温筒などの無機発泡体の製
造方法、特に１表面に均一なスキン層が形成されている
ため、耐衝撃性に優れた無機発泡体の製造方法に関する
。Detailed Description of the Invention (Industrial Field of Application) The present invention relates to a method for producing inorganic foams such as non-combustible building materials and non-combustible heat-insulating cylinders, and particularly provides impact resistance because a uniform skin layer is formed on one surface. The present invention relates to a method for producing an inorganic foam with excellent properties.
（従来の技術）
シラス、抗火石、真珠岩などの天然ガラス質鉱物や廃ガ
ラスなどの人造ガラスを主体とする無機発泡体は１通常
、離型剤が塗布された発泡成形型に無機発泡原料を充填
した後、焼成発泡させて得られる。しかし、この方法で
は、離型剤塗膜上に直接無機発泡原料が充填されるため
、得られた無機発泡体には、きわめて薄いスキン層しか
形成されない。そのために、この無機発泡体は耐衝撃性
が低く、破損しやすい。スキン層の形成を促進するべく
、低温にて発泡させれば１発泡倍率が低下する。(Prior art) Inorganic foams made mainly of natural glassy minerals such as shirasu, anti-firestone, and nacre, and artificial glass such as waste glass are produced by: It is obtained by filling the foam with foam and then firing and foaming it. However, in this method, since the inorganic foaming raw material is directly filled onto the release agent coating, only an extremely thin skin layer is formed in the resulting inorganic foam. Therefore, this inorganic foam has low impact resistance and is easily damaged. If foaming is performed at a low temperature to promote the formation of a skin layer, the foaming ratio will decrease.
このような欠点を解決するために、離型剤塗膜に非発泡
性原料を塗布することにより、スキン層を形成させる試
みがなされている。しかし、乾燥状態の非発泡性原料を
塗布することば困難であるうえに、塗布した非発泡性原
料は、離型剤塗膜から容易に剥離する。その結果、得ら
れた無機発泡体には均一なスキン層が形成されない。湿
潤状態の非発泡性原料は、離型剤塗膜」−に薄くかつ均
一に塗布することば困難である。In order to solve these drawbacks, attempts have been made to form a skin layer by applying a non-foaming material to the release agent coating. However, it is difficult to apply a dry non-foaming raw material, and the applied non-foaming raw material easily peels off from the release agent coating. As a result, a uniform skin layer is not formed in the obtained inorganic foam. It is difficult to apply a wet non-foaming raw material thinly and uniformly to a release agent coating.
（発明が解決しようとする問題点）
本発明は上記従来の問題点を解決するものであり、その
目的とするところは１表面に均一なスキン層が形成され
ているため、耐衝撃性に優れた無機発泡体の製造方法を
提供することにある。(Problems to be Solved by the Invention) The present invention solves the above-mentioned conventional problems, and its purpose is to form a uniform skin layer on one surface, so it has excellent impact resistance. An object of the present invention is to provide a method for producing an inorganic foam.
（問題点を解決するための手段）
本発明は１発泡成形型の湿潤状態の離型剤塗膜に非発泡
性原料をパウダースプレーすることにより、均一な散布
層が得られる。このパウダースプレー面に無機発泡原料
を充填して焼成発泡することにより、均一なスキン層が
形成され得る。との発明者の知見にもとづいて完成され
た。(Means for Solving the Problems) According to the present invention, a uniformly dispersed layer can be obtained by powder spraying a non-foaming raw material onto a wet mold release agent coating of a foam mold. A uniform skin layer can be formed by filling this powder spray surface with an inorganic foaming raw material and firing and foaming it. It was completed based on the inventor's knowledge.
本発明のスキン層が形成された無機発泡体の製造方法は
９発泡成形型に塗布された離型剤の湿潤塗膜に、非発泡
性原料をパウダースプレーする工程、および該パウダー
スプレーされた発泡成形型に無機発泡原料を充填し、こ
れを発泡させる工程。The method for producing an inorganic foam with a skin layer of the present invention includes the steps of: powder-spraying a non-foaming raw material onto a wet film of a release agent applied to a foam mold; A process of filling a mold with inorganic foaming raw material and foaming it.
を包含し、そのことにより上記目的が達成される。, thereby achieving the above objective.
発泡成形型としては１セラミツク製や耐熱金属製の成形
型が用いられる。しかし、セラミックスは線膨張係数が
ガラス質原料に近いため、焼成発泡した無機発泡体の発
泡型からの離型が困難となる。セラミックスは高価でも
あるため２通常、耐熱金属製の成形型が使用される。耐
熱金属は線膨張係数がガラス質原料より大きく、離型は
容易と考えられる。しかし、焼成発泡により発錆するた
め１発錆による焼成発泡体の離型性の低下および着色を
防止するべく、離型剤が用いられる。As the foaming mold, a mold made of ceramic or a heat-resistant metal is used. However, since the coefficient of linear expansion of ceramics is close to that of glassy raw materials, it is difficult to release the fired and foamed inorganic foam from the foaming mold. Ceramics are also expensive, so molds made of heat-resistant metals are usually used. Heat-resistant metals have a larger coefficient of linear expansion than glassy raw materials, and are thought to be easier to release from molds. However, since firing and foaming causes rust, a mold release agent is used to prevent a decrease in mold release properties and coloring of the fired foam due to one rust occurrence.
離型剤には２例えば、アルミナがある。アルミナは１通
常、徽粉状で使用される。アルミナはガラス質鉱物の１
成分であり、焼成時に無機発泡原料に吸収されても、得
られた無機発泡体の物性に影響を及ぼさない。離型剤は
、適当な結合剤（例えば、ボリヒニルアルコール、メチ
ルセルロースなど）の水溶液中に懸濁された後、スプレ
ーまたは刷毛を用いて発泡成形型に塗布される。離型剤
塗膜の厚さは０．２〜０．６＋ｎ、好ましくは約０ 、
３ ＊＊である。０ 、２ ＊＊を下まわると、所望の
離型効果が得られない。０．６龍を」二まわると、均一
な塗布が困難となり、所望形状の無機発泡体が得られな
い。Examples of mold release agents include alumina. Alumina is usually used in powder form. Alumina is a glassy mineral
Even if it is absorbed into the inorganic foam raw material during firing, it does not affect the physical properties of the resulting inorganic foam. The mold release agent is suspended in an aqueous solution of a suitable binder (eg, borihinyl alcohol, methylcellulose, etc.) and then applied to the foam mold using a spray or brush. The thickness of the release agent coating is 0.2 to 0.6+n, preferably about 0.
3 **. If it is less than 0 or 2**, the desired mold release effect cannot be obtained. If it goes around 0.6", uniform application becomes difficult and an inorganic foam of the desired shape cannot be obtained.
このように発泡成形型に塗布された離型剤塗膜には２次
いで、非発泡性原料がパウダースプレーされる。このパ
ウダースプレーは１発泡成形型に塗布された直後の、湿
潤状態の離型剤塗膜に対して行われる。こうすることに
より、離型剤塗膜上に非発泡性原料の均一な散布層が形
成される。非発泡性原料としては、無機発泡原料と同一
組成であって発泡剤を含有しない材料が用いられる。こ
の非発泡性原料の粒度は無機発泡原料と同程度とされ１
例えば、平均粒径は約４０μｍに調製される。A non-foaming raw material is then powder sprayed onto the mold release agent coating coated on the foam mold in this manner. This powder spraying is performed on the wet mold release agent coating immediately after it has been applied to the foam mold. By doing so, a uniformly dispersed layer of the non-foaming raw material is formed on the release agent coating. As the non-foaming raw material, a material having the same composition as the inorganic foaming raw material and containing no foaming agent is used. The particle size of this non-foaming raw material is comparable to that of the inorganic foaming raw material.
For example, the average particle size is adjusted to about 40 μm.
微粉状となるほど、パウダースプレーが容易になる。パ
ウダースプレーには、市販の乾燥粉末噴霧器１例えば、
防虫剤噴霧用のパウダースプレー器が用いられる。パウ
ダースプレーされた散布層の厚さは、 ０．３〜３，
０ｗｇｍ、好ましくは０ 、７〜２ 、５ ｍｓの範囲
に設定される。０．３龍を下まわると、薄層のスキン層
しか得られず、無機発泡体の耐衝撃性が向上しない。３
．０ｍｍを」二まわると、スキン層に亀裂が生じ、その
間に無機発泡原料が入りこむ。The finer the powder, the easier it is to spray the powder. For powder spraying, commercially available dry powder atomizers 1, e.g.
Powder sprayers are used to spray insect repellents. The thickness of the powder sprayed scattering layer is 0.3~3,
0 wgm, preferably in the range of 0.7 to 2.5 ms. If it is less than 0.3, only a thin skin layer is obtained and the impact resistance of the inorganic foam is not improved. 3
．． When it goes around 0 mm twice, cracks occur in the skin layer, and the inorganic foaming material enters between them.
従って、スキン層の一部に発泡体部分が形成され。Therefore, a foam portion is formed in a portion of the skin layer.
表面にムラができ、また無機発泡体の耐衝撃性がかえっ
て低下する。The surface becomes uneven and the impact resistance of the inorganic foam is reduced.
非発泡性原料がパウダースプレーされた発泡成形型には
７次いで、無機発泡原料が充填される。The foaming mold onto which the non-foaming raw material was powder-sprayed is then filled with an inorganic foaming raw material.
無機発泡原料の充填は１通常、パウダースプレーされた
散布層を乾燥した後９行われる。しかし。Filling with the inorganic foaming raw material is usually carried out after drying the powder-sprayed dusting layer. but.
散布層を乾燥せずに無機発泡原料を充填してもよい。し
かしこの場合、無機発泡原料の充填により散布層や離型
剤塗膜が剥落するおそれがある。しかも、焼成発泡の際
に水蒸気を発生し、炉材や発熱体を劣化させるおそれが
あるので賞月されない。The inorganic foaming material may be filled in the sprayed layer without drying it. However, in this case, there is a risk that the spray layer and the release agent coating may peel off due to the filling of the inorganic foaming raw material. Moreover, it is not recommended because it generates water vapor during firing and foaming, which may deteriorate the furnace material and heating element.
無機発泡原料は、天然ガラス質鉱物や人造ガラスを主体
とし、これに分解型発泡剤や添加剤を加えて調製される
。天然ガラス質鉱物には９例えば。Inorganic foaming raw materials are mainly made of natural glassy minerals and artificial glass, and are prepared by adding decomposable foaming agents and additives. Natural glassy minerals include 9 e.g.
シラス、抗火石、真珠岩がある。人造ガラスとしては、
廃ガラスなどが用いられる。分解型発泡剤には９例えば
、炭化ケイ素、窒化ケイ素、窒化ホウ素、窒化アルミニ
ウム等がある。天然ガラス質鉱物２人造ガラスおよび分
解型発泡剤は１通常。There are whitebait, anti-firestone, and pearlite. As artificial glass,
Waste glass is used. Examples of decomposable blowing agents include silicon carbide, silicon nitride, boron nitride, and aluminum nitride. Natural glass minerals 2 Artificial glass and decomposition blowing agents 1 Normal.
微粉末にして使用される。添加剤には、気泡調整剤、造
核剤などがある。無機発泡原料は、乾燥粉末状態のもの
を型内に充填する。It is used as a fine powder. Additives include foam regulators, nucleating agents, and the like. The inorganic foaming raw material is filled in a dry powder state into a mold.
発泡成形型に充填された無機発泡原料は９次いで、焼成
炉にて焼成発泡され、無機発泡体が形成される。この無
機発泡体の表面には均一なスキン層が形成されている。The inorganic foaming raw material filled into the foaming mold is then fired and foamed in a firing furnace to form an inorganic foam. A uniform skin layer is formed on the surface of this inorganic foam.
このスキン層の厚さは散布層に依存し２通常、０．２〜
１．２ｍｍである。The thickness of this skin layer depends on the scattering layer2 and is usually 0.2~
It is 1.2 mm.
（実施例） 以下に本発明を実施例について述べる。(Example) The present invention will be described below with reference to examples.
シラス微粉末（鹿児島県吉用町産２通称“吉川シラス”
）
５００重量部
炭化ケイ素微粉末（ＳｉＣ、分解型発泡剤、 Ｉ？Ｃ−
ＲＦＣ。Whitebait fine powder (commonly known as “Yoshikawa Shirasu” produced in Yoshimochi Town, Kagoshima Prefecture)
) 500 parts by weight silicon carbide fine powder (SiC, decomposable foaming agent, I?C-
R.F.C.
太平洋ラング１、社製）７．５重量部 五酸化バナジウム微粉末（Ｖ２Ｏ，、、気泡調整剤。7.5 parts by weight of Pacific Lang 1 Fine vanadium pentoxide powder (V2O, bubble regulator.
特級試薬、和光純薬社製）１．５重量部上記処方を配合
し、播潰機にて２５分間混合して無機発泡原料を調製し
た。1.5 parts by weight (special grade reagent, manufactured by Wako Pure Chemical Industries, Ltd.) of the above formulation was blended and mixed for 25 minutes using a crusher to prepare an inorganic foam raw material.
他方、水５００重量部にメチルセルロース粉末（メ１へ
ローズ９０Ｓ＋１−３００００ 、信越化学社製）０．
５重量部を加え、この水溶液にアルミナ微粉末（ＡＭ−
２］、 。On the other hand, 500 parts by weight of water was mixed with 0.0% methylcellulose powder (Mellowose 90S+1-30000, manufactured by Shin-Etsu Chemical Co., Ltd.).
5 parts by weight of alumina fine powder (AM-
2], .
住友化学社製）５００重量部を添加して離型剤懸濁液を
調製した。A mold release agent suspension was prepared by adding 500 parts by weight (manufactured by Sumitomo Chemical Co., Ltd.).
また、上記シラス微粉末５００重量部に」−記五酸化ハ
ナジウム微粉末１．５重量部を混合し、非発泡性原料を
調製した。In addition, 1.5 parts by weight of the fine hanadium pentoxide powder described above was mixed with 500 parts by weight of the fine whitebait powder to prepare a non-foaming raw material.
発泡成形型として１両端にストッパーを有する半円筒状
の耐熱鋼板製型（Ｓ［ＩＳ ３１０Ｓ、厚さ０．８１■
。As a foam mold, a semi-cylindrical heat-resistant steel plate mold with stoppers at both ends (S [IS 310S, thickness 0.81 mm) was used.
.
半径９（ｌｎ、長さ６００ｍｍ）を用いた。この発泡成
形型に刷毛により」二記舖型剤懸濁液を塗布し、約０．
３１ｍ厚の離型剤塗膜を形成した。この湿潤状態の離型
剤塗膜に、市販の乾燥粉末噴霧器により、上記非発泡性
原料をパウダースプレーＬ 、 １ 、５ ｍｌ厚の
散布層を形成した。このように離型剤塗膜および散布層
が形成された発泡成形型を、乾燥機に入れ。A radius of 9 (ln, length 600 mm) was used. Apply the molding agent suspension to this foaming mold with a brush, and apply the molding agent suspension to about 0.
A release agent coating film with a thickness of 31 m was formed. The non-foaming raw material was powder sprayed onto this wet release agent coating using a commercially available dry powder sprayer to form a powder spray layer having a thickness of 1.5 ml. The foaming mold with the release agent coated film and the sprayed layer formed in this way is placed in a dryer.
８０°Ｃにて１５分間乾燥した。さらに、この発泡成形
型に、上記無機発泡原料を充填した。It was dried at 80°C for 15 minutes. Furthermore, this foaming mold was filled with the above-mentioned inorganic foaming raw material.
無機発泡原料が充填された発泡成形型を焼成炉（２連ロ
ーラーハース、東海高熱工業社製）に入れて昇温し、
１１４０℃にて３０分間加熱して無機発泡原料を焼成発
泡させた。加熱後、３時間かげて３００゛Ｃまで徐冷し
た。The foaming mold filled with the inorganic foaming raw material was placed in a firing furnace (double roller hearth, manufactured by Tokai Konetsu Kogyo Co., Ltd.) and the temperature was raised.
The inorganic foaming raw material was fired and foamed by heating at 1140° C. for 30 minutes. After heating, the mixture was slowly cooled to 300°C in the shade for 3 hours.
このようにして、半円筒状の焼成発泡体が得られた。こ
の焼成発泡体は表面に約０．４１１１のスキン層が形成
されており、半径９０＋＋＋＋、長さ６００ｍｍの大き
さであり、見掛密度は０．２３ｇ／ｃＪ、熱伝導率は０
．０６５ｋｃａｌ／ｍｈ’ｃであった。In this way, a semi-cylindrical fired foam was obtained. This fired foam has a skin layer of approximately 0.4111 on its surface, has a radius of 90++++, a length of 600mm, an apparent density of 0.23g/cJ, and a thermal conductivity of 0.
．． It was 065kcal/mh'c.
比較例−
乾燥状態の離型剤塗膜に非発泡性原料のパウダーを塗布
したこと以外は、実施例と同様の方法により、半円筒状
の焼成発泡体を得た。焼成発泡体の見掛密度および熱伝
導率は実施例と同一の値であった。しかし、この焼成発
泡体には０．１９ｍｍ以下のきわめて薄いスキン層しか
形成されず、焼成発泡型の底面にあたる部分は特にスキ
ン層が薄かった。この無機発泡体の表層は少しの打撃を
加えると陥没し、その破片力持１１落した。Comparative Example - A semi-cylindrical fired foam was obtained in the same manner as in the example except that a non-foaming raw material powder was applied to the dry release agent coating. The apparent density and thermal conductivity of the fired foam were the same as those of the Examples. However, only an extremely thin skin layer of 0.19 mm or less was formed on this fired foam, and the skin layer was particularly thin at the bottom of the fired foam mold. The surface layer of this inorganic foam caved in when a slight blow was applied, and the pieces fell off.
実施例および比較例から明らかなように２本発明によれ
ば１丈夫な均一なスキン層が形成された無機発泡体が得
られる。非発泡性原料のパウダーをスプレーしない従来
の方法では、きわめて薄いスキン層しか得られず、打撃
や衝撃にきわめて脱弱であった。As is clear from the Examples and Comparative Examples, according to the present invention, an inorganic foam in which a strong and uniform skin layer is formed can be obtained. Conventional methods that do not spray non-foaming raw material powders yield only extremely thin skin layers, which are extremely susceptible to blows and impacts.
（発明の効果）
本発明によれば、このように、湿潤状態の離型剤塗膜に
非発泡性原料をパウダースプレーするため、均一なスキ
ン層が形成された無機発泡体が得られる。この無機発泡
体は、スキン層の効果により、耐衝撃性に優れている。(Effects of the Invention) According to the present invention, since the non-foaming raw material is powder-sprayed onto the wet release agent coating, an inorganic foam in which a uniform skin layer is formed can be obtained. This inorganic foam has excellent impact resistance due to the effect of the skin layer.
！華な打撃では、容易に圧潰、陥没しない。従って、得
られた無機発泡体を２次加工、施工、運搬する際の製品
の）負傷が著しく減少して、製品効率が増す。! It will not be easily crushed or caved in by a strong blow. Therefore, damage to the product during secondary processing, installation, and transportation of the obtained inorganic foam is significantly reduced, and product efficiency is increased.
その結果１本発明のスキン層が形成された無機発泡体の
製造方法は、不燃建＋２．不燃保温筒なとの製造に好適
に用いられる。As a result, the method for producing an inorganic foam with a skin layer according to the present invention has a non-combustible structure +2. Suitable for manufacturing non-combustible heat insulation cylinders.
Claims (1)
泡性原料をパウダースプレーする工程、および 該パウダースプレーされた発泡成形型に無機発泡原料を
充填し、これを発泡させる工程、 を包含するスキン層が形成された無機発泡体の製造方法
。 ２、前記パウダースプレーされた散布層の厚さが、０．
３〜３．０ｍｍ範囲である特許請求の範囲第１項に記載
のスキン層が形成された無機発泡体の製造方法。 ３、前記非発泡性原料が、発泡剤を含有しないこと以外
は、前記無機発泡原料と同一組成である特許請求の範囲
第１項に記載のスキン層が形成された無機発泡体の製造
方法。[Claims] 1. A step of powder-spraying a non-foaming raw material onto a wet film of a release agent applied to a foam mold, and filling the powder-sprayed foam mold with an inorganic foam raw material. A method for producing an inorganic foam having a skin layer formed thereon, comprising the steps of: , foaming the same. 2. The thickness of the powder-sprayed scattering layer is 0.
A method for producing an inorganic foam on which a skin layer according to claim 1 is formed, the skin layer having a thickness in the range of 3 to 3.0 mm. 3. The method for producing an inorganic foam on which a skin layer is formed according to claim 1, wherein the non-foaming raw material has the same composition as the inorganic foaming raw material except that it does not contain a foaming agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5196387A JPS63222028A (en) | 1987-03-09 | 1987-03-09 | Production of inorganic foam having formed skin layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5196387A JPS63222028A (en) | 1987-03-09 | 1987-03-09 | Production of inorganic foam having formed skin layer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63222028A true JPS63222028A (en) | 1988-09-14 |
| JPH0415175B2 JPH0415175B2 (en) | 1992-03-17 |
Family
ID=12901518
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5196387A Granted JPS63222028A (en) | 1987-03-09 | 1987-03-09 | Production of inorganic foam having formed skin layer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63222028A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5871677A (en) * | 1996-07-04 | 1999-02-16 | Hebel Aktiengesellschaft | Method of manufacturing a light, open-pored, mineral insulating board |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4461339B1 (en) * | 2009-07-07 | 2010-05-12 | 快堂 池田 | High speed / high pressure free action bearing and its manufacturing method |
-
1987
- 1987-03-09 JP JP5196387A patent/JPS63222028A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5871677A (en) * | 1996-07-04 | 1999-02-16 | Hebel Aktiengesellschaft | Method of manufacturing a light, open-pored, mineral insulating board |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0415175B2 (en) | 1992-03-17 |
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| EXPY | Cancellation because of completion of term |