JPS649260B2 - - Google Patents
Info
- Publication number
- JPS649260B2 JPS649260B2 JP6441480A JP6441480A JPS649260B2 JP S649260 B2 JPS649260 B2 JP S649260B2 JP 6441480 A JP6441480 A JP 6441480A JP 6441480 A JP6441480 A JP 6441480A JP S649260 B2 JPS649260 B2 JP S649260B2
- Authority
- JP
- Japan
- Prior art keywords
- polyisocyanurate
- lightweight aggregate
- fire
- pearlite
- particles
- 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.)
- Expired
Links
- 229920000582 polyisocyanurate Polymers 0.000 claims description 18
- 239000011495 polyisocyanurate Substances 0.000 claims description 17
- 239000000843 powder Substances 0.000 claims description 12
- 230000009970 fire resistant effect Effects 0.000 claims description 11
- 239000000203 mixture Substances 0.000 claims description 9
- 239000008187 granular material Substances 0.000 claims description 7
- 239000006260 foam Substances 0.000 claims description 5
- 239000011435 rock Substances 0.000 claims 1
- 239000004575 stone Substances 0.000 claims 1
- 239000002245 particle Substances 0.000 description 17
- 229910001562 pearlite Inorganic materials 0.000 description 14
- 230000008018 melting Effects 0.000 description 7
- 238000002844 melting Methods 0.000 description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- 239000003054 catalyst Substances 0.000 description 5
- 238000005829 trimerization reaction Methods 0.000 description 5
- 230000005484 gravity Effects 0.000 description 4
- 229920001228 polyisocyanate Polymers 0.000 description 4
- 239000005056 polyisocyanate Substances 0.000 description 4
- 235000019353 potassium silicate Nutrition 0.000 description 4
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000009413 insulation Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 229910052851 sillimanite Inorganic materials 0.000 description 3
- 239000010455 vermiculite Substances 0.000 description 3
- 229910052902 vermiculite Inorganic materials 0.000 description 3
- 235000019354 vermiculite Nutrition 0.000 description 3
- 229910019142 PO4 Inorganic materials 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000000839 emulsion Substances 0.000 description 2
- 239000005332 obsidian Substances 0.000 description 2
- 235000021317 phosphate Nutrition 0.000 description 2
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 2
- 229920005862 polyol Polymers 0.000 description 2
- 150000003077 polyols Chemical class 0.000 description 2
- 239000004604 Blowing Agent Substances 0.000 description 1
- 208000015943 Coeliac disease Diseases 0.000 description 1
- 241000975357 Salangichthys microdon Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 1
- 239000011162 core material Substances 0.000 description 1
- 239000010436 fluorite Substances 0.000 description 1
- PAZHGORSDKKUPI-UHFFFAOYSA-N lithium metasilicate Chemical compound [Li+].[Li+].[O-][Si]([O-])=O PAZHGORSDKKUPI-UHFFFAOYSA-N 0.000 description 1
- 229910052912 lithium silicate Inorganic materials 0.000 description 1
- HCWCAKKEBCNQJP-UHFFFAOYSA-N magnesium orthosilicate Chemical compound [Mg+2].[Mg+2].[O-][Si]([O-])([O-])[O-] HCWCAKKEBCNQJP-UHFFFAOYSA-N 0.000 description 1
- 239000000391 magnesium silicate Substances 0.000 description 1
- 229910052919 magnesium silicate Inorganic materials 0.000 description 1
- 235000019792 magnesium silicate Nutrition 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002557 mineral fiber Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000010451 perlite Substances 0.000 description 1
- 235000019362 perlite Nutrition 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
Landscapes
- Porous Artificial Stone Or Porous Ceramic Products (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Description
【発明の詳細な説明】
本発明は、軽量にして融点が1900℃以上もある
無機軽量骨材の外周をその骨材の原料からなる未
焼成粉粒状物とポリイソシアヌレートからなる混
合物で被覆した耐火性軽量骨材に関する。溶鉱炉
の湯口、耐火レンガ、防火ドア、金庫その他の分
野においては1000℃または1600℃以上の耐熱性が
必要である。しかし、従来はパーライト粒等の無
機軽量骨材を水ガラス等で結合した部材が殆どで
あつた。ところが、このパーライト粒自体は1340
℃の融点を有するが、水ガラス等のアルカリ性物
質を含浸またはコーテイングすると、耐熱温度が
200〜400℃低下する欠点があつた。しかも、水ガ
ラスは経時的に潮解すると共に、パーライト粒を
破壊する欠点があつた。[Detailed description of the invention] The present invention covers the outer periphery of lightweight inorganic aggregate, which is lightweight and has a melting point of 1900°C or higher, with a mixture of unfired powder and granules made from the raw material of the aggregate and polyisocyanurate. Relating to fire-resistant lightweight aggregates. Heat resistance of 1000℃ or 1600℃ or higher is required for blast furnace sprues, firebricks, fireproof doors, safes, and other fields. However, in the past, most members were made by bonding inorganic lightweight aggregates such as pearlite particles with water glass or the like. However, this pearlite grain itself is 1340
It has a melting point of °C, but when impregnated or coated with an alkaline substance such as water glass, the heat resistance temperature increases.
The drawback was that the temperature dropped by 200-400℃. Moreover, water glass has the drawback of deliquescing over time and destroying pearlite grains.
本発明は、このような欠点を除去するため経時
的に劣化しないと共に、自己接着性があり、その
上無機軽量骨材の融点等の耐火性を低下せしめる
こともなく、しかも1000〜1600℃にさらされると
発泡し、上記骨材の体積を増加せしめた安価で製
造容易な耐火性軽量骨材を提案する。 In order to eliminate these drawbacks, the present invention does not deteriorate over time, has self-adhesive properties, and does not reduce the fire resistance such as the melting point of the inorganic lightweight aggregate, and furthermore, it can withstand temperatures of 1000 to 1600℃ We propose an inexpensive, easy-to-manufacture fire-resistant lightweight aggregate that foams when exposed to increase the volume of the aggregate.
以下に図面を用いて、本発明に係る耐火性軽量
骨材（以下、単に粒子と称す）について詳細に説
明する。第１図は上記粒子を拡大して示す縦断面
図であり、１は粒子、２は無機軽量骨材、３は混
合物で未焼成粉粒状物４とポリイソシアヌレート
５からなる。さらに詳説すると、本発明において
無機軽量骨材２とは、パーライト（パーライトシ
ヤモツト系、パーライトシリマナイトシヤモツト
系、パーライトシリマナイト系、高アルミナパー
ライト）、焼成バーミキユライト、シラスバルー
ンなどの一種以上からなる。なお、原料としては
黒曜石、真珠岩、松脂岩、フツ石、ヒル石、シラ
スなどである。また、この無機軽量骨材２は直径
D1が１mm〜30mmφ、1000℃以上の融点と高いカ
サ比重（0.04〜0.9）と適宜の圧縮強度３〜30
Kg／cm2を有する。この骨材２は芯材あるいは核と
なり、その断面は中空あるいは連通気泡組織、独
立気泡組織である。 The fire-resistant lightweight aggregate (hereinafter simply referred to as particles) according to the present invention will be described in detail below using the drawings. FIG. 1 is an enlarged vertical cross-sectional view of the above-mentioned particles, in which 1 is a particle, 2 is an inorganic lightweight aggregate, and 3 is a mixture consisting of unfired powder 4 and polyisocyanurate 5. More specifically, in the present invention, the inorganic lightweight aggregate 2 is composed of one or more types of pearlite (pearlite sillimanite type, pearlite sillimanite type, pearlite sillimanite type, high alumina pearlite), calcined vermiculite, shirasu balloon, etc. . The raw materials include obsidian, nacre, pinestone, fluorite, vermiculite, and whitebait. In addition, this inorganic lightweight aggregate 2 has a diameter of
D1 is 1mm to 30mmφ, melting point of 1000℃ or higher, high bulk specific gravity (0.04 to 0.9), and appropriate compressive strength of 3 to 30
Kg/cm 2 . This aggregate 2 serves as a core material or nucleus, and its cross section is hollow, open cell structure, or closed cell structure.
本発明において、混合物３は未焼成粉粒状物４
とポリイソシアヌレート５からなり、上記無機軽
量骨材２の外周面をコーテイング、例えば30〜
3000ミクロンの厚さで被覆する。この混合物３は
前記骨材２の強度のアツプと高熱、例えば1000℃
以上にさらされた際に、粉粒物が発泡して断熱性
と耐火性を上昇せしめると共に、ポリイソシアヌ
レート５の炭素骨格により高融点化と高断熱性を
発揮する。しかも、ポリイソシアヌレート５は吸
水性がなく、かつ無機軽量骨材２を混合物３でコ
ーテイングしているため、常温下における湿度、
温度変形によつて無機軽量骨材２を破壊すること
がなく、また水ガラスのように潮解することもな
く、保形性（寸法安定性）にすぐれた粒子１とな
る。なお、未焼成粉粒状物４としては、前記した
パーライト、焼成バーミキユライト、シラスバル
ーン等の原料、所謂未発泡状態の約500メツシユ
以下の粉粒状物である。この粉粒状物４の添加量
は目的および粒径によつて異なる。特に高融点の
粒子にするには高断熱層の形成が必要となるため
大量に、所謂無機軽量骨材２より小さくかつ、密
に付着可能な粒度の粉粒物とする。また、ポリイ
ソシアヌレート５としては、ウレタン変性ポリイ
ソシアヌレート、フエノール変性ポリイソシアヌ
レート、その他変性のポリイソシアヌレートであ
り、高温下で炭素骨格を形成する。なお、成分と
しては、ポリイソシアヌレート、三量化触媒、水
を混合したエマルジヨンタイプ、ポリイソシアヌ
レート、ポリオール、ポリイソシアネート、三量
化触媒に必要により適量の発泡剤を添加した通常
タイプのポリイソシアヌレート等である。特にエ
マルジヨンタイプは、ポリイソシアネートと三量
化触媒を混合し、使用時に水を添加して撹拌し、
これを約60〜150℃で約１〜30分間キユアしてポ
リイソシアネートのポリイソシアヌレート化を図
る。このポリイソシアヌレート５は自己接着性と
防水性とを兼備する。 In the present invention, the mixture 3 is an unfired powder granule 4
and polyisocyanurate 5, coating the outer peripheral surface of the inorganic lightweight aggregate 2, e.g.
Coat with a thickness of 3000 microns. This mixture 3 increases the strength of the aggregate 2 and heats it at high temperature, for example, 1000℃.
When exposed to the above, the powder foams and increases heat insulation and fire resistance, and the carbon skeleton of polyisocyanurate 5 exhibits a high melting point and high heat insulation properties. Moreover, since the polyisocyanurate 5 has no water absorption property and the inorganic lightweight aggregate 2 is coated with the mixture 3, the humidity at room temperature,
The inorganic lightweight aggregate 2 will not be destroyed by temperature deformation, nor will it deliquesce like water glass, resulting in particles 1 with excellent shape retention (dimensional stability). Incidentally, the unfired powder granules 4 are raw materials such as the above-mentioned pearlite, fired vermiculite, shirasu balloons, etc., and powders and granules of about 500 mesh or less in a so-called unfoamed state. The amount of the powder 4 to be added varies depending on the purpose and particle size. In particular, in order to make particles with a high melting point, it is necessary to form a highly heat-insulating layer, so a large amount of powder particles is used, which is smaller than the so-called inorganic lightweight aggregate 2 and has a particle size that allows dense adhesion. Further, the polyisocyanurate 5 includes urethane-modified polyisocyanurate, phenol-modified polyisocyanurate, and other modified polyisocyanurates, which form a carbon skeleton at high temperatures. In addition, the components include an emulsion type in which polyisocyanurate, a trimerization catalyst, and water are mixed, and a regular type polyisocyanurate in which an appropriate amount of blowing agent is added to the trimerization catalyst, polyisocyanurate, polyol, polyisocyanate, and trimerization catalyst. etc. In particular, for emulsion type, polyisocyanate and trimerization catalyst are mixed, water is added and stirred at the time of use, and
This is cured at about 60 to 150°C for about 1 to 30 minutes to convert the polyisocyanate into polyisocyanurate. This polyisocyanurate 5 has both self-adhesive properties and waterproof properties.
次に、実施例につき説明する。 Next, examples will be described.
いま、パーライト粒として平均粒径３mmφを用
意し、また黒曜石の粉粒状物（32〜50メツシユ）、
ポリイソシアネート、三量化触媒、水および必要
によりポリオールを混合撹拌し、この混合物にパ
ーライト粒を添加し、混合して撹拌する。この撹
拌によつて、パーライト粒子の表面には混合物３
が被着（コーテング）される。これをロータリー
キルン式の装置により個々に分離しつつ加温、例
えば約90〜110℃で１〜60分以下養生した。この
粒子１は第１図に示すような形状をしており、被
覆厚さは約１mmであつた。この粒子１の圧縮強度
は12〜30Kg／cm2、カサ比重は0.3であつた。そこ
で、この粒子１を2000℃にさらしたところ、パー
ライト粒を中心にして発泡した未焼成粉粒状物４
が約５〜20倍に発泡し、これがポリイソシアヌレ
ートフオーム５の炭化層によつてバインドされ、
高カサ比重の粒子となつていた。そこで断面して
みると、パーライト粒の外殻気孔にポリイソシア
ヌレート５が侵入し一体化を図つていた。 Now, we have prepared pearlite grains with an average diameter of 3 mm, and also obsidian powder (32 to 50 mesh).
Polyisocyanate, trimerization catalyst, water and, if necessary, polyol are mixed and stirred, and perlite particles are added to this mixture, mixed and stirred. By this stirring, the mixture 3 is deposited on the surface of the pearlite particles.
is coated. This was separated into individual pieces using a rotary kiln type device and heated, for example, at about 90 to 110°C for 1 to 60 minutes or less. The particles 1 had a shape as shown in FIG. 1, and the coating thickness was about 1 mm. The compressive strength of the particles 1 was 12 to 30 Kg/cm 2 and the bulk specific gravity was 0.3. Therefore, when this particle 1 was exposed to 2000℃, unfired powder granules 4 foamed around pearlite particles.
is expanded to about 5 to 20 times, and this is bound by the carbonized layer of polyisocyanurate foam 5,
They were particles with high bulk specific gravity. When the pearlite grains were sectioned, polyisocyanurate 5 penetrated into the outer shell pores of the pearlite grains and became integrated.
以上説明したのは、本発明に係る耐火性軽量骨
材の一実施例にすぎず、シリコン樹脂、活性炭、
鉱物性繊維、ゼオライト、オルガノシリコン、リ
チユームシリケート、燐酸塩、珪フツ化マグネシ
ウムの一種以上を添加することもできる。これら
の添加剤、特に燐酸塩等は炭素骨格の耐熱性向上
に寄与する。 What has been described above is only one example of the fire-resistant lightweight aggregate according to the present invention, including silicone resin, activated carbon,
It is also possible to add one or more of mineral fibers, zeolites, organosilicon, lithium silicate, phosphates, and magnesium silicate. These additives, especially phosphates, contribute to improving the heat resistance of the carbon skeleton.
上述したように、本発明に係る耐火性軽量骨材
によれば1000〜2000℃の高熱下でも溶融すること
なく、無機軽量骨材の原形を維持しうる耐火性が
ある。また、耐火性軽量骨材は軽量にして断熱
性、吸音性に富み、その上圧縮強度も高い特徴が
ある。また、耐火性軽量骨材は高温下において未
焼成粉粒状物が発泡すると同時に、高温下で形成
されたポリイソシアヌレートの炭素骨格によつて
バインドされ、これが高カサ比重の粒子となり、
高温下における断熱性の大幅な改善を図ることが
できる。さらに、本発明に係る耐火性軽量骨材等
は安価に、しかも簡単に製造できる特徴がある。 As described above, the fire-resistant lightweight aggregate according to the present invention has fire resistance that allows it to maintain its original shape without melting even under high heat of 1000 to 2000°C. In addition, fire-resistant lightweight aggregate is lightweight, has excellent heat-insulating and sound-absorbing properties, and has high compressive strength. In addition, in the fire-resistant lightweight aggregate, the unfired powder granules foam at high temperatures, and at the same time are bound by the carbon skeleton of polyisocyanurate formed at high temperatures, which become particles with high bulk specific gravity.
It is possible to significantly improve heat insulation properties at high temperatures. Furthermore, the fire-resistant lightweight aggregate and the like according to the present invention have the characteristic that they can be manufactured easily and at low cost.
第１図は本発明に係る耐火性軽量骨材の一実施
例を示す拡大断面図である。
１……耐火性軽量骨材、２……無機軽量骨材、
３……混合物。
FIG. 1 is an enlarged sectional view showing one embodiment of the fire-resistant lightweight aggregate according to the present invention. 1... Fire-resistant lightweight aggregate, 2... Inorganic lightweight aggregate,
3...Mixture.
Claims (1)
する岩石、石の未焼成粉粒状物とポリイソシアヌ
レートからなる混合物で被覆したことを特徴とす
る耐火性軽量骨材。1. A fire-resistant lightweight aggregate characterized in that the outer circumferential surface of the inorganic lightweight aggregate is coated with a mixture of rock, unfired powder granules of stone, and polyisocyanurate that foam at high temperatures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6441480A JPS56160367A (en) | 1980-05-14 | 1980-05-14 | Refractory lightweight aggregate and refractory article therefrom |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6441480A JPS56160367A (en) | 1980-05-14 | 1980-05-14 | Refractory lightweight aggregate and refractory article therefrom |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56160367A JPS56160367A (en) | 1981-12-10 |
| JPS649260B2 true JPS649260B2 (en) | 1989-02-16 |
Family
ID=13257603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6441480A Granted JPS56160367A (en) | 1980-05-14 | 1980-05-14 | Refractory lightweight aggregate and refractory article therefrom |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56160367A (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5146714A (en) * | 1974-10-18 | 1976-04-21 | Ig Gijutsu Kenkyusho Kk | Zooryutaikazai oyobi zooryutaikazaio mochiitenaru taikapaneru |
-
1980
- 1980-05-14 JP JP6441480A patent/JPS56160367A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56160367A (en) | 1981-12-10 |
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