JP2007302546A - High-temperature fire-resistant foam insulator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a high-temperature fire-resistant foam insulator which, in the event of fire, does not burn with smoke and flame and also bears up under a high temperature and is capable of keeping heat insulation performance. <P>SOLUTION: This high-temperature fire-resistant glass fiber, keeping its shape at around 1,000°C even in the event of fire when it receives heat by far exceeding the glass melting temperature, is produced by forming a heat resistant coating 6 on the surface of a glass fiber 5 by immersing magnesium chloride 4 as a high-temperature heat-resistant treating agent 3 in the space among fibers of a glass fiber 1 or a glass wool 2 in which ultra thin glass fibers are closely packed. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  Since the ban on the use of asbestos due to health hazards, it has been lacking in lightweight high-temperature fire-resistant insulation, especially in the field of non-combustible insulation that retains strength by protecting high-temperature structures in the event of a fire, and heat resistance of glass fibers in the general integrated insulation field It is an area related to improvement.

  Glass fiber-only woven or non-woven fabric, or short fiber glass wool, and other products that contain organic fibers in glass fiber from the viewpoint of reducing manufacturing costs, these non-combustible materials have received national approval. However, it is a current JIS standard product that passes if it does not burn more than a certain amount of smoke, flames, and cannot withstand the high temperatures at the time of a fire. Therefore, it can only be used with natural or artificial heat insulation in some high-temperature environments, and cannot be used for human life protection and equipment protection in emergency high temperature areas such as fires. At present, there is no choice but to move to expensive heat insulating materials such as ceramic materials.

  However, because the current glass fiber is a non-combustible material, it is used in various areas, but unfortunately the ship main engine cylinder-exhaust collecting pipe has a temperature of 1000 ° C or more in the vicinity of the cylinder. The glass fiber is not used in the material for dissolution and solidification, which is meaningless as the glass fiber is sequentially dissolved and solidified over time.

  In addition, the use of metal, LPG or LNG as a non-combustible heat insulating material for tanks or tankers is simply a nationally recognized non-combustible material in the front, but in the event of a fire accident, once the heat-resistant insulation performance temperature There is currently no function.

  By the way, in the 1000 ° C flame test with butane gas, it melts and shrinks, but finally disappears, but it is nonflammable according to JIS regulations, but in reality, the heat resistance temperature of the glass fiber itself due to high temperature heating during fire is very high due to the fiber However, it is far from maintaining the heat insulating function in the region of about 1000 ° C. at the time of fire.

There is no disclosure regarding the improvement of the heat resistant temperature of glass fiber.

Problems to be solved by the invention

  Glass fiber long yarn itself, or glass fiber twisted yarn woven fabric, glass fiber nonwoven fabric, long fiber or short fiber glass wool, etc. The heat-resistant temperature of the heat receiving surface is very low due to ultrafine fibers, especially fire It melts early in the process of temperature rise, and in some cases there is a problem and even the risk of a secondary disaster.

  Therefore, even if the main glass fiber itself is a non-combustible material, it is insulated and protected in the case of fire heating. It is proved as an obvious reality from the experimental results of current commercial products that the heat insulation function is attenuated if it melts without being able to withstand and the thickness decreases rapidly, and finally the heat insulation effect disappears in a short time .

  Although there is a national certificate in the JIS inspection regulations based on the Building Standards Act, it has only escaped self-combustibility, and the purpose of obtaining the non-combustible material certification is the current Building Standards Law provisions and actual fires At the time of receiving heat at around 1000 ° C., since the function is far from incombustible heat insulation, commercially available glass fiber heat insulating materials are not used on ships.

  In addition, in the function display column of the commercial glass fiber product pamphlet, there is no description of the usage environment temperature limit, and even if it is good to use non-combustible heat insulating material for general buildings, LNG and LPG tanks And the limit temperature for use in terrestrial chemical tanks should be clearly stated, and in the event of an accident fire, heat absorption and insulation during the fire is not possible and the tank itself has a risk of explosion explosion Needless to say, this also leads to user misleading.

  The use of non-combustible insulation for protecting various structural strength members must be light from the handling surface, and for that purpose, the exposed surface of the glass fiber incombustible insulation must be able to withstand high temperatures. Unfortunately, the current glass fiber incombustible material has no functionality in the high temperature range, and only high-temperature heat-insulating materials are expensive ceramic heat-insulating materials or large-weight fire-resistant materials. The current situation is.

  Although it is a well-known fact that a non-combustible material is good for exerting an incombustible heat insulation effect, it is widely advantageous as a product to maintain flexibility, but glass with a treatment agent for improving the heat-resistant temperature If the flexibility of the fiber itself is reduced, the use is also reduced.

Means for solving the problem

  The purpose of non-combustible insulation is not only to generate smoke, fire and combustion, but also to withstand the heat receiving temperature during fires and to maintain heat insulating performance even under high temperature heat receiving during fires. Don't be.

1. Only glass fiber as much as possible, not woven organic fibers.

2. However, depending on the application, it is inevitable to mix flammable organic fibers for the purpose of cost reduction. Thing.

3. By coating the surface periphery of the glass fiber itself with a high temperature heat insulating agent, the surface high temperature heat resistant layer on the fiber itself is made of steel and constitutes a primary incombustible heat insulating layer.

4. Due to this, the high temperature is attenuated by the primary heat insulating layer, and the glass fiber below the heat receiving surface maintains its shape without being melted at a high temperature in accordance with the lamination.

5. With this configuration, the thickness selection of the non-combustible heat insulating material by the glass fiber configuration is determined by the target temperature of the object to be heat-insulated, and the high-temperature heat-resistant heat-insulating material coated and impregnated on the heat receiving surface enables high-temperature heat insulation, Effective for protecting all objects from high temperatures.

The invention's effect

  I ignite a gasoline filling dish with a 20mm thick glass fiber nonwoven fabric coated with calorium chloride on the surface of a high temperature heat-resistant agent of the present invention, surrounding a 100mm square wooden pillar and making the flame touch the pillar near the pillar. As a result of the fire extinguishing of gasoline after 30 minutes and the removal of the glass fiber nonwoven fabric around the column, the surface of the glass fiber nonwoven fabric heat receiving material was found to have a thickness phenomenon with an irregular shape around 2 mm. Without changing the shape, the color of the column itself was the same as before the installation.

3. The 15 mm thick high temperature heat resistant resin foam insulation with the high temperature heat resistant agent applied to the surface of the high temperature heat resistant agent of the present invention is used to surround the square steel pillars, and so that the flame hits the pillars with a 900 ° C butane gas burner. Even after 10 minutes have passed since the firing burner was ignited, the column steel material temperature was 90 ° C., the surface of the high-temperature heat-resistant resin foam heat insulating material received heat to form a primary heat insulating layer, and the apparent thickness became about 13 mm. However, the temperature of the pillar steel itself is far from the strength deterioration temperature, and the steel surface rust prevention paint has not changed from before installation, so the thickness selection of the high temperature heat resistant resin foam insulation can be decided according to the purpose. Well, this is also a great contribution to secondary disaster prevention insulation.

  Insulation of the liquefied gas tank is often carried out with a flammable adhesive on the inside of the tank, but this is to prevent the tank steel material from damaging the low temperature strength of the tank. There is also a risk of liquefaction, evaporation and explosion when receiving heat, and if the present invention is applied to tank steel with sodium silicate or silicate on the outside or inside of the tank, the danger of explosion will occur.

4. The same applies to the high-temperature heat-resistant agent of the present invention coated with and impregnated with the composite high-temperature heat-resistant agent according to any one of claims 2 to 13 other than calcium chloride.

5. Short fiber glass wool flocs coated and impregnated with the high-temperature heat-resistant agent of the present invention are sprayed and attached to a 5 mm thick steel plate surface with a nonflammable adhesive with a thickness of 30 mm, and the short fiber is attached to the steel plate surface. The steel plate was heated for 15 minutes with a 900 ° C butane gas burner with direct flame, but the steel plate temperature was 95 ° C, and it was also found that it was safe to assume that the steel material strength could not be deteriorated during a fire.

  Based on the above, it was proved that it is an extremely high-temperature heat-resistant material that is inexpensive and efficient for protecting a flammable explosive substance in a storage tank in the event of a fire.

BEST MODE FOR CARRYING OUT THE INVENTION

  The claim 1 is impregnated by applying magnesium chloride (4) as a high-temperature heat-resistant treatment agent (3) to the glass fiber (1) and the glass wool (2), which are the main materials glass fiber and nonwoven fabric. I let you.

  Magnesium chloride (4) as a high-temperature heat-resistant treatment agent (3) emphasizes safety, concentrates natural seawater approximately 35 times by the traditional salted rice pad manufacturing method, and removes salt content. The magnesium chloride component% was increased and used while containing minerals.

  Seawater after removal of salt was used as seawater-extracted magnesium chloride, but the other ingredients are also part of food nutrients, safe except for those with renal or liver dysfunction, and are sodium, calcium, iron, and calum .

  This magnesium chloride (4) high-rate seawater is coated and impregnated as a high-temperature heat-resistant treatment agent (3) on glass fiber woven fabric and non-woven glass fiber (1) and glass wool (2). By covering the surface of the glass fiber (5), a heat-resistant film (6) is formed on the surface, and it is resistant to heat receiving well beyond the melting temperature of fine glass fiber, which is a well-known fact, maintaining its shape and heat insulation performance As much as possible to prevent deterioration.

    Liquid magnesium chloride (4) did not become anhydrous when heated and became magnesium oxide at around 600 ° C., had heat resistance, and was used separately for commercial industries, but the functionality was exactly the same.

  Claim 2 is made by applying and impregnating magnesium oxide (7) as a high-temperature heat-resistant treatment agent (3) to glass fiber (1) and glass wool (2) which are glass fiber woven fabric and nonwoven fabric which are main materials. However, the functionality was similar to that of magnesium chloride (4).

  Magnesium oxide (7) has a high melting point of 2800 ° C. and high temperature fire resistance.

  According to claim 3, magnesium nitrate (8) is dissolved in water as a high-temperature heat-resistant treatment agent (3) in woven and non-woven glass fibers (1) and glass wool (2) as the main materials. Although it was applied and impregnated as aqueous magnesium nitrate (8), the functionality was the same as that of magnesium chloride (4).

  Claim 4 impregnates and impregnates the main material glass fiber woven fabric and nonwoven glass fiber (1) and glass wool (2) with magnesium hydroxide (9) as a high-temperature heat-resistant treatment agent (3). Although the functionality is somewhat weaker than that of magnesium chloride (4), it is almost in the range of use.

  Claim 5 is made by applying and impregnating magnesium carbonate (10) as a high-temperature heat-resistant treatment agent (3) to glass fiber (1) and glass wool (2) which are glass fiber woven fabric and nonwoven fabric which are main materials. However, magnesium carbonate (10) became magnesium oxide by heating at 700 ° C., and the functionality was almost the same as that of magnesium chloride (4).

  Claim 6 is made by applying and impregnating magnesium sulfate (11) as a high-temperature heat-resistant treatment agent (3) to glass fiber (1) and glass wool (2) made of glass fiber as the main material. However, the magnesium sulfate (11) reaction was neutral and became anhydrous when heated and decomposed at 1124 ° C., but its functionality was equivalent to that of magnesium chloride (4) from the viewpoint of fire temperature.

  Claim 7 applies and impregnates polyaluminum chloride (12) as a high-temperature heat-resistant treatment agent (3) to glass fiber (1) and glass wool (2), which are glass fiber woven fabric and nonwoven fabric, which are the main materials. However, despite the fact that the pH reaction is almost neutral and is generally a wastewater treatment agent, it is effective to improve the heat resistance of the glass fiber by applying and impregnating the glass fiber. Although slightly inferior to magnesium (4), the shape was sufficiently maintained at around 800 ° C.

  Claim 8 applies and impregnates the main material glass fiber woven fabric and nonwoven glass fiber (1) and glass wool (2) with aluminum hydroxide (13) as a high-temperature heat-resistant treatment agent (3). However, when heated at high temperature, it becomes alumina, it dissolves in both acid and alkali, acid dissolution becomes aluminum salt, alkali dissolution becomes aluminate, and its functionality is the same shape as magnesium chloride (4). There was an effect.

  Claim 9 is made by applying and impregnating aluminum sulfate (14) as a high-temperature heat-resistant treatment agent (3) to the glass fiber (1) and the glass wool (2) of the glass fiber as the main material. However, the aqueous solution is acidic and used as a wastewater treatment agent. However, when the aqueous solution is heated to a high temperature, it becomes basic aluminum sulfate, and its functionality has the effect of maintaining the same shape as magnesium chloride (4).

  Claim 10 is made by applying and impregnating aluminum silicate (15) as a high-temperature heat-resistant treatment agent (3) to glass fiber (1) and glass wool (2), which are glass fiber woven fabrics and main materials. However, when sodium silicate and alum, which are raw materials for artificial production, are heated with caustic soda solution, they are completely dissolved, and if they are impregnated with an aqueous solution, their functionality is the same as that of magnesium chloride (4). was there.

  Claim 11 is made by applying and impregnating ammonium alum (16) as a high-temperature heat-resistant treatment agent (3) to glass fiber (1) and glass wool (2), which are the main materials of glass fiber. However, the aqueous solution was acidic, and when heated at high temperature, it became aluminum oxide at around 650 ° C., and the functionality was effective in maintaining the shape even at 800 ° C. or higher, which is equivalent to magnesium chloride (4).

  Claim 12 applies and impregnates colloidal silica (17) as a high-temperature heat-resistant treatment agent (3) to glass fiber (1) and glass wool (2) which are glass fiber woven fabric and nonwoven fabric which are main materials. However, colloidal silica (17) penetrates into any part of glass fiber woven fabric of high-pressure bees if it is coated and impregnated due to ultrafine particles, contains about 30% silicic acid anhydride, and has a pH of 10 There was no abnormal influence on the glass fiber before and after, it was stable to acid, it could be easily mixed with water, and the functionality was effective in maintaining the shape even at 800 ° C. or higher equivalent to magnesium chloride (4).

  Claim 13 is made by applying and impregnating titanium sulfate (18) as a high-temperature heat-resistant treatment agent (3) to the glass fiber (1) and glass wool (2), which are the main materials, glass fiber woven fabric and nonwoven fabric. However, the melting point of titanium was 1858 ° C., and there was no toxicity. When coated and impregnated, the functionality was effective in maintaining the shape even at 800 ° C. or higher, which is equivalent to magnesium chloride (4).

  Claim 14 is based on glass fiber (1) and non-woven glass fiber (1) and glass wool (2), which are the main materials, as high-temperature heat-resistant treatment agent (3), magnesium chloride (4), magnesium oxide. (7) Magnesium nitrate (8), Magnesium hydroxide (9), Magnesium carbonate (10), Magnesium sulfate (11), Aluminum chloride (12), Aluminum hydroxide (13), Aluminum sulfate (14), Silica Aluminum oxide (15), ammonium alum (16), colloidal silica (17), and titanium sulfate (18) were mixed and impregnated with multiple types, but the functionality is the effect of maintaining the shape even at 800 ° C or higher. was there.

High temperature heat resistant glass fiber.

It is a perspective view of the high-temperature heat-resistant processing agent application structure to the whole glass fiber-nonwoven fabric cloth of long glass fiber. It is an AA expanded sectional view of high temperature heat-resistant processing agent application composition on the glass fiber surface. It is a perspective sectional view of the high temperature heat resistant resin foam heat insulating material attached around the steel column. It is a perspective sectional view of a high-temperature heat-resistant resin foam insulation for important facility electrical control electric wire protection. It is a perspective view of the high temperature heat-resistant resin foam heat insulating material with a fire door inside filling.

Explanation of symbols

1 Woven and non-woven glass fiber
2 Glasswool 3 High-temperature heat-resistant treatment agent 4 Magnesium chloride 5 Glass fiber 6 Heat-resistant clothing 7 Magnesium oxide 8 Magnesium nitrate 9 Magnesium hydroxide 10 Magnesium carbonate 11 Magnesium sulfate 12 Polyaluminum chloride 13 Aluminum hydroxide 14 Aluminum sulfate 15 Aluminum silicate 16 Ammonium Alum 17 Colloidal silica 18 Titanium sulfate

Claims (14)

  By coating and impregnating woven and non-woven glass fiber (1) and glass wool (2) with magnesium chloride (4) as a high-temperature heat-resistant treatment agent (3), a heat-resistant film is formed on the surface of glass fiber (5). A high-temperature heat-resistant glass fiber that constitutes (6), maintains its shape without melting at a known glass fiber heat-resistant temperature, and maintains its shape even at a known glass-melting temperature.   The high-temperature heat-resistant glass fiber according to claim 1, wherein the high-temperature heat-resistant treatment agent (3) is coated and impregnated with magnesium oxide (7) instead of magnesium chloride (4).   The high-temperature heat-resistant glass fiber according to claim 1, wherein the high-temperature heat-resistant treatment agent (3) is coated and impregnated with magnesium nitrate (8) instead of magnesium chloride (4).   The high-temperature heat-resistant glass fiber according to claim 1, wherein the high-temperature heat-resistant treatment agent (3) is coated and impregnated with magnesium hydroxide (9) instead of magnesium chloride (4).   The high-temperature heat-resistant glass fiber according to claim 1, wherein the high-temperature heat-resistant treatment agent (3) is coated and impregnated with magnesium carbonate (10) instead of magnesium chloride (4).   The high-temperature heat-resistant glass fiber according to claim 1, wherein the high-temperature heat-resistant treatment agent (3) is coated and impregnated with magnesium sulfate (11) instead of magnesium chloride (4).   The high-temperature heat-resistant glass fiber according to claim 1, wherein the high-temperature heat-resistant treatment agent (3) is coated and impregnated with polyaluminum chloride (12) instead of magnesium chloride (4).   The high-temperature heat-resistant glass fiber according to claim 1, wherein the high-temperature heat-resistant treatment agent (3) is coated and impregnated with aluminum hydroxide (13) instead of magnesium chloride (4).   The high-temperature heat-resistant glass fiber according to claim 1, wherein the high-temperature heat-resistant treatment agent (3) is coated and impregnated with aluminum sulfate (14) instead of magnesium chloride (4).   The high-temperature heat-resistant glass fiber according to claim 1, wherein the high-temperature heat-resistant treatment agent (3) is coated and impregnated with aluminum silicate (15) instead of magnesium chloride (4).   The high-temperature heat-resistant glass fiber according to claim 1, wherein the high-temperature heat-resistant treatment agent (3) is coated and impregnated with ammonium alum (16) instead of magnesium chloride (4).   The high-temperature heat-resistant glass fiber according to claim 1, wherein the high-temperature heat-resistant treatment agent (3) is coated and impregnated with colloidal silica (17) instead of magnesium chloride (4).   The high-temperature heat-resistant glass fiber according to claim 1, wherein titanium sulfate (18) is applied and impregnated as a high-temperature heat-resistant treatment agent (3) instead of magnesium chloride (4).   As high-temperature heat-resistant treatment agent (3), magnesium chloride (4) magnesium oxide (7), magnesium nitrate (8), magnesium hydroxide (9), magnesium carbonate (10), magnesium sulfate (11), polyaluminum chloride (12) ), Aluminum hydroxide (13), aluminum sulfate (14), aluminum silicate (15) ammonium alum (16), colloidal silica (17), and titanium sulfate (18) are coated and impregnated in a mixture. Item 13. A high-temperature heat-resistant glass fiber according to item 1 to 12.

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