KR20130067421A - Mineral wool fiber composition having improved saline solubility and construction material containing the mineral wool fiber obtained therefrom - Google Patents
Mineral wool fiber composition having improved saline solubility and construction material containing the mineral wool fiber obtained therefrom Download PDFInfo
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- KR20130067421A KR20130067421A KR1020110134599A KR20110134599A KR20130067421A KR 20130067421 A KR20130067421 A KR 20130067421A KR 1020110134599 A KR1020110134599 A KR 1020110134599A KR 20110134599 A KR20110134599 A KR 20110134599A KR 20130067421 A KR20130067421 A KR 20130067421A
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- 239000000835 fiber Substances 0.000 title claims abstract description 89
- 239000011490 mineral wool Substances 0.000 title claims abstract description 51
- 239000000203 mixture Substances 0.000 title claims abstract description 40
- 239000004035 construction material Substances 0.000 title abstract description 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 title description 3
- 239000011780 sodium chloride Substances 0.000 title description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 33
- 229910052742 iron Inorganic materials 0.000 claims abstract description 15
- 239000002893 slag Substances 0.000 claims abstract description 13
- 238000004090 dissolution Methods 0.000 claims abstract description 11
- 239000002994 raw material Substances 0.000 claims abstract description 8
- 150000003839 salts Chemical class 0.000 claims description 18
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 13
- 239000004566 building material Substances 0.000 claims description 11
- 229910052760 oxygen Inorganic materials 0.000 claims description 10
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 9
- 239000011810 insulating material Substances 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims description 3
- 229910052708 sodium Inorganic materials 0.000 claims description 2
- 210000001124 body fluid Anatomy 0.000 abstract description 13
- 239000010839 body fluid Substances 0.000 abstract description 13
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract description 4
- 239000002131 composite material Substances 0.000 abstract description 2
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 abstract 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 2
- 229920002522 Wood fibre Polymers 0.000 abstract 1
- 229910052681 coesite Inorganic materials 0.000 abstract 1
- 229910052593 corundum Inorganic materials 0.000 abstract 1
- 229910052906 cristobalite Inorganic materials 0.000 abstract 1
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract 1
- 239000011707 mineral Substances 0.000 abstract 1
- 239000000377 silicon dioxide Substances 0.000 abstract 1
- 235000012239 silicon dioxide Nutrition 0.000 abstract 1
- 229910052682 stishovite Inorganic materials 0.000 abstract 1
- 229910052905 tridymite Inorganic materials 0.000 abstract 1
- 239000002025 wood fiber Substances 0.000 abstract 1
- 229910001845 yogo sapphire Inorganic materials 0.000 abstract 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 12
- 230000000052 comparative effect Effects 0.000 description 10
- 238000009413 insulation Methods 0.000 description 8
- 238000002844 melting Methods 0.000 description 8
- 230000008018 melting Effects 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 239000006227 byproduct Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000005259 measurement Methods 0.000 description 4
- 239000000155 melt Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 238000002425 crystallisation Methods 0.000 description 3
- 230000008025 crystallization Effects 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 229910010413 TiO 2 Inorganic materials 0.000 description 2
- 229910000287 alkaline earth metal oxide Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 239000000156 glass melt Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 238000010079 rubber tapping Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 210000002268 wool Anatomy 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 206010007269 Carcinogenicity Diseases 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 206010016654 Fibrosis Diseases 0.000 description 1
- 241000282412 Homo Species 0.000 description 1
- 206010028980 Neoplasm Diseases 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 229910000272 alkali metal oxide Inorganic materials 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 201000011510 cancer Diseases 0.000 description 1
- 230000007670 carcinogenicity Effects 0.000 description 1
- 231100000260 carcinogenicity Toxicity 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 239000006059 cover glass Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000004761 fibrosis Effects 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 231100000003 human carcinogen Toxicity 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000012784 inorganic fiber Substances 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 210000004072 lung Anatomy 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000002557 mineral fiber Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C13/00—Fibre or filament compositions
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C13/00—Fibre or filament compositions
- C03C13/006—Glass-ceramics fibres
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C13/00—Fibre or filament compositions
- C03C13/06—Mineral fibres, e.g. slag wool, mineral wool, rock wool
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/062—Glass compositions containing silica with less than 40% silica by weight
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
- C03C3/083—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
- C03C3/083—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound
- C03C3/085—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound containing an oxide of a divalent metal
- C03C3/087—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound containing an oxide of a divalent metal containing calcium oxide, e.g. common sheet or container glass
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/76—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
- E04B1/78—Heat insulating elements
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C2213/00—Glass fibres or filaments
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Glass Compositions (AREA)
- Ceramic Engineering (AREA)
- Acoustics & Sound (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
Abstract
Description
The present invention relates to a mineral wool fiber composition having improved salt solubility and a building material containing the mineral wool fiber obtained therefrom. More specifically, the present invention has heat resistance and fiber properties equivalent to those of existing products, and at the same time, excellent salt dissolution. The present invention relates to a mineral wool fiber composition which is harmless to the environment, and which can be produced inexpensively and at low cost, and to building materials such as ceiling panels and inorganic insulating materials containing the mineral wool fibers obtained therefrom.
Mineral wool (mineral wool) is a Man-Made Mineral Fibers (MMMF) product made by melting silicate ore at a high temperature of 1,500 ~ 1,700 ℃ and then fibrous using spinner's high-speed rotational power. Generally, it is processed into a mat, a blanket, a bulk, or a cover, and is used for heat insulation, heat insulation, sound absorption, sound insulation, etc. due to its excellent heat insulation, non-combustibility, and heat resistance. . It is also used as a ceiling plate by wet molding mineral wool fibers. When used for ceiling panels, unlike mineral wool, which is used as a general building / industrial interior materials, it is characterized by being directly exposed to the user, and therefore, harmlessness of the mineral wool fiber may be more important.
Regarding the effects of mineral wool fibers on the human body, according to the International Agency for Research on Cancer (IARC) classification criteria, mineral wool fibers are Group 3, not classifiable as human carcinogens. to carcinogenicity to humans). However, if the broken fibers are inhaled and accumulate in the lungs by breathing, there is a possibility of affecting the human body. Therefore, by increasing the solubility of the fiber in human body fluids (water containing a certain concentration of salt) to facilitate the discharge of the accumulated fibers to the outside of the body can minimize the risk to the human body. However, even when the saline solubility is improved, the basic properties as inorganic fibers of mineral wool should be maintained. That is, it is important to have heat resistance so that the actual use temperature of mineral wool can reach 700 ~ 800 ℃, have a certain level of fiber diameter, and improve the insulation performance by minimizing the content of unfiberized particles as much as possible. Do.
Many studies have been conducted to find such an optimum condition, and representative one of them is that the solubility of the fiber in the body fluid can be improved by reducing the content of Al 2 O 3 in the mineral wool fiber component. Korean Laid-Open Patent Publication No. 2011-0097010 discloses a composition for preparing biosoluble ceramic fibers for high temperature insulation, which has a relatively high SiO 2 content and a relatively low CaO and Al 2 O 3 content. The composition is excellent in salt solubility and exhibits excellent heat resistance in an extremely high temperature environment of 1200 ° C. or higher, but has a high manufacturing cost and a relatively high content of unfibrillated particles, which is not suitable for use in general industrial insulation or ceiling plate manufacture.
On the other hand, the main raw material for the wool wool (bale wool) currently used for ceiling panels is steel slag, a by-product of the steel industry. Iron slag is a by-product remaining after iron is separated from iron ore, and has a high CaO content of about 40% or more and iron content of less than 1%. In addition, the iron slag is Al 2 O 3 content of about 11%, Al 2 O 3 is essentially included, it is difficult to design the low Al 2 O 3 composition mentioned above in the mineral wool that iron slag is used as the main raw material. The existing low alumina method has a limit in improving salt solubility in the melting process, and is a condition that is difficult to approach in reality. Therefore, there is a need for the development of a mineral wool composition that is harmless to the human body even when directly exposed to the user when applied to a general building material such as building insulation or ceiling panels, even though Al 2 O 3 contains a certain portion.
The present invention is to solve the problems of the prior art as described above, because it has the same heat resistance and fiber characteristics as the existing product, and excellent salt solubility even when inhaled into the human body is easily dissolved in body fluids to be discharged and removed outside the body As it can be manufactured by using lump ash slag (iron slag), a by-product generated in the iron ore industry, as a main raw material, it is environmentally friendly and advantageous in terms of production cost. It is a technical problem to provide a composition and building materials, such as a ceiling plate and an inorganic insulating material containing the same.
The present invention to solve the above technical problem, SiO 2 32-48 wt%, Al 2 O 3 10-23 wt%, CaO 23-40 wt%, MgO 2-8 wt%, and Na 2 O and K 2 It provides a salt-soluble mineral wool fiber composition comprising 1 to 4% by weight of O.
According to another aspect of the present invention, there is provided a mineral wool fiber, characterized in that obtained by fiberizing the salt-soluble mineral wool fiber composition.
According to another aspect of the present invention, there is provided a building material, such as a ceiling plate, an inorganic insulating material, characterized in that it comprises the mineral wool fibers.
When the salt-soluble mineral wool composition according to the present invention is applied to general building materials, in particular, to ceiling panels, when dust that may be generated during the construction of ceiling panels or repair / replacement due to breakage / repair, etc. is inhaled into the human body, Easily soluble in body fluids and can be removed from the human body. In addition, the salt-soluble mineral wool composition of the present invention can be achieved by using iron slag which is a by-product generated in the iron ore industry as a main raw material, which is environmentally friendly and advantageous in terms of production cost.
EMBODIMENT OF THE INVENTION Hereinafter, this invention is demonstrated in detail.
SiO 2 , a mesh forming oxide, serves to form the basic structure of mineral wool fibers. The composition of the present invention contains 32 to 48% by weight, preferably 39 to 44% by weight of SiO 2 in a total of 100% by weight. If the content of SiO 2 in the composition is less than 32% by weight, the water resistance is lowered, and there is a possibility that a large part of the fiber structure is already collapsed during the manufacturing of wet building materials (eg, ceiling panels). And an increase in the content of unfibrillated particles (shot).
The intermediate oxide, Al 2 O 3 , increases the viscosity of the glass melt near the liquidus to control the crystallization of the glass and improve the water resistance of the fibers. The composition of the present invention contains 10 to 23% by weight, preferably 14 to 22% by weight of Al 2 O 3 in 100% by weight of the total. When the Al 2 O 3 content in the composition is less than 10% by weight, the water resistance may be lowered, and when the Al 2 O 3 content is more than 23% by weight, the salt solubility of the mineral wool fiber may be reduced.
In one embodiment of the present invention, when no additional alumina source is used, the Al 2 O 3 content may be 13 to 15.5% by weight, and when using a separate alumina source, the level may be 20 to 23% by weight. have.
CaO and MgO act as alkaline earth metal oxides (RO) to improve salt solubility, and also have a positive effect on fibrosis, such as reducing the viscosity of the glass melt and improving chemical durability. The effect on salt solubility is that MgO is greater than CaO. The composition of the present invention contains 23 to 40% by weight of CaO and 2 to 8% by weight of MgO, preferably 25 to 36% by weight of CaO and 4 to 6% by weight of MgO in 100% by weight. If the content of these alkaline earth metal oxides is less than the lower limit, the melt viscosity may increase to increase the shot content or the fiber diameter. On the contrary, if the upper limit exceeds the upper limit, the difference between the fiberization temperature and the crystallization temperature may decrease. Crystallization progresses during the fiberization operation, and thus there is a possibility that smooth fiberization cannot be achieved.
Na 2 O and K 2 O are alkali metal oxides (R 2 O), which serve as a melting agent for generating uncrosslinked oxygen to facilitate the melting, and also improve salt solubility. The composition of the present invention comprises 1 to 4% by weight of the total of Na 2 O and K 2 O in 100% by weight, preferably 1.5 to 3.5% by weight of the total of Na 2 O and K 2 O. Na 2 O and K 2 O may be included in the composition at 0 to 4% by weight, respectively, preferably Na 2 O 0.5 to 3.5% by weight and K 2 O 0.5 to 3.5% by weight, but are not limited thereto. It is not. If the sum of Na 2 O and K 2 O in the composition is less than 1% by weight, the salt solubility is lowered, and if it exceeds 4% by weight, the water resistance of the fiber is lowered.
The total content of the modified oxides CaO, MgO, Na 2 O and K 2 O is preferably 30 to 50% by weight of the total 100% by weight in terms of improving salt solubility.
Although not intended, the salt-soluble mineral wool composition of the present invention may further include other components such as iron oxide (FeO or Fe 2 O 3 ), TiO 2, etc. in addition to the above components. In the case of iron oxide (FeO or Fe 2 O 3 ) may be contained in 0 to 5% by weight in 100% by weight of the composition, in the case of TiO 2 may be included in 0 to 3% by weight in 100% by weight of the composition.
According to one embodiment of the present invention, the composition of the present invention can be prepared using a lump ash slag (iron slag) as a main raw material by-product generated in the iron ore industry. In this case, preferably, the content of iron oxide (FeO or Fe 2 O 3 ) in the composition is 0 to 5% by weight (more preferably 0 to 3%) by using at least 70% by weight of the raw material slag (iron slag). Can be lowered to).
The salt-soluble mineral wool composition according to the present invention can be prepared in the same manner as a conventional mineral wool composition preparation method. For example, a melting method using combustion heat of cokes in a Cupola furnace may be used, and an electric melting furnace method using anisotropic graphite electrodes may be melted using electrical resistance heat, but the melting method is this method. It is not limited to these.
There are a number of methods for fiberizing the molten mineral wool melt, it can also be applied to the existing method. For example, the melt is dropped on the surface of a disk-type spinner wheel rotating at a high speed, and at the same time, a strong wind is blown around the spinner wheel, and the melt is stretched into a fibrous shape by the centrifugal force to fibrous. Can be mentioned. However, this is also not limited to the above manner.
The salt-soluble mineral wool fiber of the present invention obtained as described above preferably has a dissolution rate constant of 250 ng / cm 2 · hr or more (more preferably 300 ng / cm 2 · hr or more) for an artificial body fluid having a pH of 4.5 ± 0.1. For example, it is 300-450 ng / cm <2> hr, the average fiber diameter is 7 micrometers or less (for example, 4-7 micrometers), and shot content after 35 mesh passes is 4 weight% or less (for example, 1-4 weight%, More preferably, Is not more than 3.5% by weight).
The salt-soluble mineral wool fibers of the present invention satisfying the above characteristics have heat resistance and fiber properties equivalent to those of the existing products, and have excellent salt solubility even when inhaled into the human body, so that they are easily dissolved in body fluids and discharged and removed from the body. It can be preferably used for general building materials, such as ceiling panels, inorganic insulation materials.
Hereinafter, the present invention will be described in more detail with reference to examples and comparative examples. However, the scope of the present invention is not limited thereto.
Examples 1-7 and Comparative Examples 1-5
The mineral wool fiber composition was prepared with the ingredients and contents shown in Table 1 (Example) and Table 2 (Comparative Example). After melting the prepared mineral wool fiber composition in an electric furnace (Electric Furnace), tapping through a tap of about 50mm diameter of the lower side of the melting furnace and dropped to a high speed fiberizing apparatus (Fiberizer), using a centrifugal force of the spinner Mineral wool fibers were prepared in a manner to produce fibers. The fibers produced in this way were evaluated for the items listed in Table 1 and Table 2.
TABLE 1 (Component content unit: wt%)
TABLE 2 (Component Content Unit: Weight%)
According to Table 1, the dissolution rate constant (Kdis) for the fiber in the embodiment was 250 ng / ㎠ or more, excellent salt solubility in artificial body fluids. In addition, it was confirmed that the heat preshrinkage has a heat resistance higher than an appropriate level.
According to Table 2, in Comparative Examples 1 and 2, a low content of Al 2 O 3 resulted in relatively low solubility. Al 2 O 3 is a major source of salt solubility degradation if it is not properly contained as an intermediate oxide. In particular, in the case of Comparative Example 2, the content of SiO 2 is higher than that of Al 2 O 3 , and thus, the fiber diameter and the shot content are high. Comparative Example 3 is a composition of a high SiO 2 content, the I keot difficulty in tapping itself as increased viscosity due to the SiO 2 content is increased, it is rapidly cooled by the melt process was dropped leads to increase in the fiber diameter and the shot content. In addition, the solubility was also lowered due to the decrease in the amount of modified oxide. In Comparative Example 4, the Al 2 O 3 content was significantly high at 25.4 wt%, so that the solubility was rapidly worsened. Comparative Example 5 had a low solubility due to the high content of Na 2 O + K 2 O.
<Measurement of properties>
1. Dissolution rate constant (K dis )
In order to evaluate the solubility of the fibers prepared in Examples and Comparative Examples in the body fluids, artificial body fluid dissolution rate constants were determined by the following method. The salt solubility of the glass fiber in the body is evaluated based on the solubility of the fiber in the artificial body fluid. After comparing the solubility in the body based on the solubility, the dissolution rate constant (Kdis) is expressed using Equation 1 shown below. Was calculated.
&Quot; (1) "
K dis = [d o ρ (1-M / M o ) 0.5 )] / 2t
d o : Initial average fiber diameter (㎛), ρ: Initial density of the fiber (g / cm 3 )
M o : Mass of initial fiber (mg), M: Mass of dissolved fiber remaining (mg)
t: experiment time (hr)
The content (g) of the components in the artificial body fluid 1L used to measure the dissolution rate constant of the fiber is as follows.
The glass fibers of Examples and Comparative Examples were placed between thin layers between 0.2 μm polycarbonate membrane filters fixed with a plastic air monitoring cassette, and the artificial fluid was filtered between these filters to improve the dissolution rate. Measured. During the experiment, the temperature of the artificial body fluid was continuously adjusted to 37 ° C., the flow rate to 135 ml / day, and the pH was maintained at 4.5 ± 0.1 using HCl. In order to accurately measure the solubility of fibers over a long period of time, the artificial fluids filtered at specific intervals (4, 7, 11, 14, 21 days) were incubated for 21 days while the fibers were leached for 21 days. After dissolving the ions using a Coupled Plasma Spectrometer), the dissolution rate constant (K dis ) was calculated using Equation 1 using the results.
2. Heated contraction rate
In order to measure the heat shrinkage rate of the mineral wool fibers, the fibers were prepared as pad-shaped specimens and used in experiments. First, a pad was prepared by thoroughly sponged 220 g of the fiber in a 0.2% starch solution, pouring it into a 300 * 300 mm mold, and evenly dissolving the spun fiber to drain the cotton through the bottom of the mold. After the pad is sufficiently dried in an oven at 100 ° C. for at least 24 hours, a specimen is prepared by cutting into a size of 100 × 100 × 25 mm, marking a measuring point with a platinum pin, and then using a vernier caliper to determine the distance between the measuring points. After measuring to the second digit, the pads were placed in a furnace heated to 1000 ° C., each heated for 1 hour, and then cooled at room temperature. The distance between the measured points of the cooled specimens was measured, and the measurement results before and after the heat treatment were compared, and the bow axis ratio was calculated using Equation 2 below.
&Quot; (2) "
Heat Shrinkage (%) = (l 0 -l 1 ) / l 0 × 100
Here, l 0 represents the initial distance (mm) between test piece marks, and l 1 represents the length (mm) between test piece marks after heating.
3. Shot Contents
In the process of spinning the fibers, shots are formed in the form of particles that do not become fibers and are present between the fibers. In order to measure the shot content, the following method was used. First, the weight of the sieve was measured, and then 50g of fibers were placed in a sieve and the weight thereof was measured. In addition, the shot inside the fiber does not fall off, and the fiber is torn finely into a blender and water is added to the level of about 90%. After stirring for 30 seconds with a blender, it was filtered through a 35 mesh sieve, which was continuously passed through the water so that the fiber completely passed through the sieve and only shots remained. Finally, the remaining shot was dried in a 120 ℃ drier for about 3 hours with a sieve and weighed. Shot contents were obtained using Equation 3 below.
&Quot; (3) "
Shot Contents (%) = w 1 / w 0 × 100
Here, w 0 represents the weight (g) of the fiber contained in the shot, w 1 represents the weight (g) of the shot excluding the fiber.
4. Fiber diameter
Fiber diameter was measured using an optical microscope, the measuring method is as follows. First, a small amount of fibers were put on the slide glass, and the slide dispersion was mixed drop by drop. After covering the cover glass and dried at room temperature for about 6 hours to prepare a preparat (sample). After preparing a total of five preparat, the measurement was started by adjusting the magnification to x200 through a microscope. The fiber diameter was measured by randomly selecting fibers at the time of measurement, and 100 fiber diameters were measured for each preparat to ensure randomness. Finally, the measured fiber diameters were recorded and averaged to obtain an average fiber diameter.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR101677847B1 (en) * | 2015-06-23 | 2016-11-21 | 주식회사 케이씨씨 | Acoustic Absorption Panel |
| KR20200090064A (en) * | 2019-01-18 | 2020-07-28 | 주식회사 케이씨씨 | Composition for mineral wool and mineral wool manufactured thereof |
| KR20210026891A (en) * | 2019-09-02 | 2021-03-10 | 주식회사 케이씨씨 | Batch composition for mineral wool and mineral wool manufactured therefrom |
| KR20220035785A (en) * | 2020-09-14 | 2022-03-22 | 주식회사 케이씨씨 | Batch composition for mineral wool and mineral wool manufactured therefrom |
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| FR2662688B1 (en) | 1990-06-01 | 1993-05-07 | Saint Gobain Isover | MINERAL FIBERS LIKELY TO DECOMPOSE IN A PHYSIOLOGICAL ENVIRONMENT. |
| BE1009073A7 (en) * | 1994-11-08 | 1996-11-05 | Rockwool Int | Artificial glass fibre. |
| JP2001139347A (en) | 1999-11-12 | 2001-05-22 | Kawasaki Steel Corp | Rock wool and rock wool board |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR101677847B1 (en) * | 2015-06-23 | 2016-11-21 | 주식회사 케이씨씨 | Acoustic Absorption Panel |
| KR20200090064A (en) * | 2019-01-18 | 2020-07-28 | 주식회사 케이씨씨 | Composition for mineral wool and mineral wool manufactured thereof |
| KR20210026891A (en) * | 2019-09-02 | 2021-03-10 | 주식회사 케이씨씨 | Batch composition for mineral wool and mineral wool manufactured therefrom |
| KR20220035785A (en) * | 2020-09-14 | 2022-03-22 | 주식회사 케이씨씨 | Batch composition for mineral wool and mineral wool manufactured therefrom |
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