KR101677847B1 - Acoustic Absorption Panel - Google Patents
Acoustic Absorption Panel Download PDFInfo
- Publication number
- KR101677847B1 KR101677847B1 KR1020150089122A KR20150089122A KR101677847B1 KR 101677847 B1 KR101677847 B1 KR 101677847B1 KR 1020150089122 A KR1020150089122 A KR 1020150089122A KR 20150089122 A KR20150089122 A KR 20150089122A KR 101677847 B1 KR101677847 B1 KR 101677847B1
- Authority
- KR
- South Korea
- Prior art keywords
- weight
- parts
- opening
- ceiling material
- mineral wool
- Prior art date
Links
- 238000010521 absorption reaction Methods 0.000 title claims abstract description 24
- 239000000463 material Substances 0.000 claims abstract description 48
- 239000011490 mineral wool Substances 0.000 claims description 40
- 239000000835 fiber Substances 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 12
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 10
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 9
- 229910010413 TiO 2 Inorganic materials 0.000 claims description 5
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 239000011521 glass Substances 0.000 description 10
- 239000004927 clay Substances 0.000 description 9
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 7
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
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- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 240000003183 Manihot esculenta Species 0.000 description 2
- 235000016735 Manihot esculenta subsp esculenta Nutrition 0.000 description 2
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- 210000004072 lung Anatomy 0.000 description 2
- 239000002557 mineral fiber Substances 0.000 description 2
- 230000002829 reductive effect Effects 0.000 description 2
- 230000002940 repellent Effects 0.000 description 2
- 229910019487 (Mg, Al)2Si4O10 Inorganic materials 0.000 description 1
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 229920002261 Corn starch Polymers 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 208000019693 Lung disease Diseases 0.000 description 1
- 229920001410 Microfiber Polymers 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 244000082204 Phyllostachys viridis Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 229920001131 Pulp (paper) Polymers 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- HPTYUNKZVDYXLP-UHFFFAOYSA-N aluminum;trihydroxy(trihydroxysilyloxy)silane;hydrate Chemical compound O.[Al].[Al].O[Si](O)(O)O[Si](O)(O)O HPTYUNKZVDYXLP-UHFFFAOYSA-N 0.000 description 1
- 229960000892 attapulgite Drugs 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- 229910000278 bentonite Inorganic materials 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- 210000001124 body fluid Anatomy 0.000 description 1
- 239000010839 body fluid Substances 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000002734 clay mineral Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
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- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
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- 229910052731 fluorine Inorganic materials 0.000 description 1
- 230000035784 germination Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910052621 halloysite Inorganic materials 0.000 description 1
- 229910000271 hectorite Inorganic materials 0.000 description 1
- KWLMIXQRALPRBC-UHFFFAOYSA-L hectorite Chemical compound [Li+].[OH-].[OH-].[Na+].[Mg+2].O1[Si]2([O-])O[Si]1([O-])O[Si]([O-])(O1)O[Si]1([O-])O2 KWLMIXQRALPRBC-UHFFFAOYSA-L 0.000 description 1
- 229910052900 illite Inorganic materials 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 229910052622 kaolinite Inorganic materials 0.000 description 1
- 229940094522 laponite Drugs 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- XCOBTUNSZUJCDH-UHFFFAOYSA-B lithium magnesium sodium silicate Chemical compound [Li+].[Li+].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[Na+].[Na+].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].O1[Si](O2)([O-])O[Si]3([O-])O[Si]1([O-])O[Si]2([O-])O3.O1[Si](O2)([O-])O[Si]3([O-])O[Si]1([O-])O[Si]2([O-])O3.O1[Si](O2)([O-])O[Si]3([O-])O[Si]1([O-])O[Si]2([O-])O3.O1[Si](O2)([O-])O[Si]3([O-])O[Si]1([O-])O[Si]2([O-])O3.O1[Si](O2)([O-])O[Si]3([O-])O[Si]1([O-])O[Si]2([O-])O3.O1[Si](O2)([O-])O[Si]3([O-])O[Si]1([O-])O[Si]2([O-])O3 XCOBTUNSZUJCDH-UHFFFAOYSA-B 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 239000003658 microfiber Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 229910052901 montmorillonite Inorganic materials 0.000 description 1
- VGIBGUSAECPPNB-UHFFFAOYSA-L nonaaluminum;magnesium;tripotassium;1,3-dioxido-2,4,5-trioxa-1,3-disilabicyclo[1.1.1]pentane;iron(2+);oxygen(2-);fluoride;hydroxide Chemical compound [OH-].[O-2].[O-2].[O-2].[O-2].[O-2].[F-].[Mg+2].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[K+].[K+].[K+].[Fe+2].O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2 VGIBGUSAECPPNB-UHFFFAOYSA-L 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 229910052625 palygorskite Inorganic materials 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 229920001592 potato starch Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
- 230000000979 retarding effect Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 229910021647 smectite Inorganic materials 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 150000003457 sulfones Chemical class 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
- E04B9/001—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation characterised by provisions for heat or sound insulation
-
- 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
- E04B1/82—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 sound only
- E04B1/84—Sound-absorbing elements
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F13/00—Coverings or linings, e.g. for walls or ceilings
-
- 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
- E04B1/82—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 sound only
- E04B1/84—Sound-absorbing elements
- E04B2001/8457—Solid slabs or blocks
- E04B2001/8476—Solid slabs or blocks with acoustical cavities, with or without acoustical filling
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F2290/00—Specially adapted covering, lining or flooring elements not otherwise provided for
- E04F2290/04—Specially adapted covering, lining or flooring elements not otherwise provided for for insulation or surface protection, e.g. against noise, impact or fire
- E04F2290/041—Specially adapted covering, lining or flooring elements not otherwise provided for for insulation or surface protection, e.g. against noise, impact or fire against noise
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Acoustics & Sound (AREA)
- Electromagnetism (AREA)
- Building Environments (AREA)
Abstract
The present invention relates to a ceiling material, and more particularly, to a ceiling material in which an opening is formed on a surface of a ceiling material, and an average diameter, an average depth and an opening ratio of the opening are appropriately controlled, thereby improving flexural fracture strength and sound absorption performance.
Description
The present invention relates to a sound absorbing ceiling material.
Ceramic fibers, especially mineral wool (Rock Wool / rock wool), are produced by melting silicate-based ores such as basalt and andesite at a high temperature of 1,500 ~ 1,700 ℃ and by using high- It is an artificial mineral fiber. Conventional mineral wool generally widespread is that components are SiO2 30 ~ 50% by weight, Al 2 O 3 5 ~ 20 wt%, FeO + Fe2O 3 1 ~ 15 % by weight, CaO 15 ~ 45 wt%, MgO 1 ~ 20% by weight It is excellent in heat insulation, fire retardancy and heat resistance, and is used for various purposes such as heat insulation, insulation, sound absorption, and soundproofing. Conventionally, most studies have been made to make mineral wool products having higher heat resistance by increasing MgO and Fe 2 O 3 and minimizing alkaline metals in the above composition, but recently, microfibers of MMVF (Man-Made Vitreous Fibers) Discussion of the possibility that lung accumulation in the lungs over a long period of time through the respiratory tract may cause lung disease has begun to be discussed.
Generally, mineral wool sound absorbing ceiling board which is used as an interior material of dry building is divided into fire-proof products and semi-fire-proof products. In particular, fire-retardant products minimize flammable substances in the base and prevent flame propagation It plays a role.
A wet-felt method is mainly used for manufacturing such a mineral wool sound-absorbing ceiling board. This wet-felt method is a method widely used in the manufacture of a ceiling board by diluting a mineral wool, a binder, a pulp, a filler, etc. with water to form a felt. This method is briefly described. First, the slurry mixed with the fully-spun mineral wool is poured into the felt of the long-distance net, and after natural dehydration, the free water contained in the slurry is forcedly dehydrated by the pressure of the vacuum pump. The laminates are then further dewatered by applying a vacuum pressure to the top and bottom of the press to adjust the thickness. The pressed raw plate is cut to an appropriate size according to the size of the processed plate, and then dried in a dryer. After that, the surface is polished and painted for easiness of pattern processing and concealment of the base color, and then a disk is manufactured. Mineral wool The sound absorbing top board composition includes mineral wool, pulp, starch, clay and other additives. The greatest advantage of this method is that the density can be lowered within the range of maintaining the physical properties such as strength and deflection of the product will be.
In addition, the conventional ceiling material manufacturing technology has improved the sound absorption performance through surface hole processing by using a roller pin press. However, in the case of using a roller pin press, (NRC) of less than 0.6, there is a limit to the development of high sound-absorbing ceilings of NRC 0.6 or higher.
An object of the present invention is to provide a ceiling material having improved flexural fracture strength and sound absorbing performance (NRC) by appropriately adjusting the opening ratio, opening depth and opening diameter of the ceiling surface.
In order to solve the above problems,
The aperture ratio is in the range of 2 to 6% based on the surface area,
When evaluating the sound absorption performance, the noise reduction coefficients (NRC) were 0.65 or more based on ASTM C 423a,
A ceiling material comprising mineral wool is provided.
Since the ceiling material according to the present invention is formed on the surface with an opening for absorbing noise under proper conditions, the flexural fracture strength and the sound absorption performance are remarkably improved, and by including the mineral wool, it is excellent in harmlessness against the human body and excellent nonflammability.
While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail.
It is to be understood, however, that the invention is not to be limited to the specific embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.
The terms first, second, etc. may be used to describe various elements, but the elements should not be limited by terms. Terms are used only for the purpose of distinguishing one component from another.
The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise.
In the present application, the terms "comprises" or "having" and the like are used to specify that there is a feature, a number, a step, an operation, an element, a component or a combination thereof described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.
Therefore, the configurations shown in the embodiments described herein are merely the most preferred embodiments of the present invention and are not intended to represent all of the technical ideas of the present invention. Therefore, various equivalents And variations.
As used herein, the term "parts by weight " means the weight ratio between the raw material components.
Hereinafter, the ceiling material according to the present invention will be described in detail.
The ceiling material according to the present invention has an opening on its surface,
The aperture ratio is in the range of 2 to 6% based on the surface area,
When evaluating the sound absorption performance, the noise reduction coefficients (NRC) were 0.65 or more based on ASTM C 423a,
Mineral wool.
The opening may be formed on the surface of the ceiling material to increase the sound absorption rate of the ceiling material through the action of absorbing the noise. The opening may be meant to encompass both the shapes of needles (needle) formed on the surface of the ceiling material, cracks, grooves, depressions, open pores and holes. Further, the opening may be formed through the vertical action of a punch pin press mechanism at the time of manufacturing a sound absorbing ceiling panel. The vertical action of the punch pin press can form the opening depth of the ceiling surface surface deeper than that of the conventional roller pin press method.
The opening according to the present invention may have an aperture ratio in the range of 2 to 6% based on the ceiling surface area. Specifically, the opening ratio may be 3 to 5% or 23 to 4%. When the opening ratio is in the above range, the flexural fracture strength of the ceiling material is prevented from being lowered, and the sound absorption performance is improved.
Further, the ceiling material according to the present invention may have a sound absorption ratio based on ASTM C 423a of NRC 0.65 or more or NRC 0.7 or more. The NRC is a 'Noise Reduction Coefficients' mediator, which represents the noise attenuation coefficient. The noise scale 'α' refers to ASTM C 423a) is calculated from 100 Hz to 5000 Hz for each frequency band. The NRC is a concept of a single numerical estimate for the absorption coefficient measured for each frequency band. The arithmetic mean of 250 Hz, 500 Hz, 1000 Hz and 2000 Hz is NRC.
In addition, the ceiling material according to the present invention may include mineral wool. The mineral wool is a material having excellent sound absorption ability against noise, heat insulation, dimensional stability against temperature and humidity, harmless to human body, nonflammable, light weight and excellent workability. It is possible.
In one embodiment, the opening according to the present invention may satisfy the following equation (1).
[Equation 1]
3 ? D 1 / D 2? 32
In Equation (1)
D 1 means the average depth of the opening,
D 2 means the average diameter of the opening.
Specifically, the ratio D 1 / D 2 may be 3 or more and 32 or less, or 5 or more and 25 or less, or 6 or more and 20 or less or less, Or 7 or more and 15 or less. When the ratio of the average diameter of the opening to the average depth of the opening is in the above range, the sound absorbing performance of the ceiling material can be improved.
In one embodiment, the openings according to the present invention may have an average depth in the range of 6 to 16 mm. The average depth of the opening may be specifically 8 to 15 mm, 9 to 14 mm or 10 to 14 mm. The opening may be formed through a vertical action of a punch pin press mechanism in manufacturing a sound absorbing ceiling plate. The upper and lower action of the punch pin press can form the opening depth of the ceiling surface surface deeper than the conventional roller pin press method. When the average depth of the opening is appropriately formed in the above range, the flexural fracture strength of the ceiling material is prevented from being lowered and the sound absorption performance is improved.
In one embodiment, the openings according to the present invention may range in average diameter from 0.5 to 2 mm. The average diameter of the openings may be specifically 0.8 to 1.5 mm, 0.9 to 1.3 mm or 1 to 1.2 mm. When the average diameter of the opening is in the above range, the flexural fracture strength of the ceiling material is prevented from being lowered, and the sound absorption performance is improved.
Hereinafter, the raw materials of the ceiling material according to the present invention will be described in detail.
The ceiling material raw material according to the present invention comprises mineral wool; Starch; Clay and pulp, based on total weight parts, 60 to 80 parts by weight of mineral wool; 1 to 5 parts by weight of starch; 5 to 12 parts by weight of clay and 0.1 to 5 parts by weight of pulp.
In one embodiment, the mineral wool according to the present invention may be a salt-soluble mineral wool fiber composition having excellent solubility in body fluids. The content of the mineral wool may be 60 to 80 parts by weight or 65 to 75 parts by weight based on the total weight of the ceiling material.
Mineral wool according to the invention comprises SiO 2, the content of SiO 2 is mineral wool total weight may be an 30 to 50 parts by weight basis.
Specifically, the mineral wool is, SiO 2, Al 2 O 3 , Fe 2 O 3, TiO 2, can be a mineral wool fiber composition comprising CaO, MgO, Na 2 O and K 2 O.
The mineral wool according to the present invention comprises 30 to 50 parts by weight of SiO 2 , 16 to 23 parts by weight of Al 2 O 3 , 0.01 to 2 parts by weight of Fe 2 O 3, 0.01 to 2 parts by weight of TiO 2 0.01 to 2 parts by weight of CaO, 25 to 35 parts by weight of CaO, 2 to 6 parts by weight of MgO, 0.1 to 5 parts by weight of R 2 O (containing at least one of Na 2 O and K 2 O) and 0.5 to 2 parts by weight of other components .
The SiO 2 is a main component of mineral wool fibers and serves as a network former forming a basic structure. The content of the SiO 2 is 30 to 50 parts by weight, 35 to 45 parts by weight based on 100 parts by weight of the mineral wool fiber composition Or 37 to 40 parts by weight. When the content of SiO 2 is within the above range, the increase of the Al 2 O 3 and alkaline earth metal oxide or alkali metal oxide is prevented relatively to prevent the increase of the raw material cost and the deterioration of mechanical properties such as water resistance is prevented. Also, the melting temperature and the fiber drawing viscosity temperature of the molten composition are prevented from increasing, and the produced fiber can facilitate fiberization.
The Al 2 O 3 serves as an intermediate forming oxide to increase the thermal performance, and the content may be 16 to 23 parts by weight or 18 to 22 parts by weight based on 100 parts by weight of the mineral wool fiber composition. When Al 2 O 3 is contained in the above range, the viscosity of the glass melt near the liquidus line is increased to control the crystallization of the glass, improve the water resistance of the fiber, and improve the biodegradability and heat resistance.
Adding the intermediate oxide is Al 2 O 3 having a water-resistance on the basis of the mesh forming the oxide in SiO 2, and the mesh size lowers the melting temperature into the make this form oxides mesh as a modification that can affect the properties of the free oxide R 2 O (Na 2 O, K 2 O), RO (CaO, MgO), and the like.
RO, which is a modified oxide in the mineral wool fiber composition, has an effect of improving the chemical durability and bio-solubility of the produced fiber and reducing the viscosity of the glass melt to aid fiberization. Here, RO may be an alkaline earth metal oxide, for example, CaO and MgO. And can also have an effect of improving the chemical durability degraded by the introduction of the alkali metal oxide. MgO reduces the temperature at which crystallization occurs and is more effective than CaO on bio-solubility. The content of CaO may be 25 to 35 parts by weight or 27 to 30 parts by weight based on 100 parts by weight of the mineral wool fiber composition, and the content of MgO is 2 to 6 parts by weight based on 100 parts by weight of the mineral wool fiber composition 3 to 5 parts by weight. For example, the mixed use amount of CaO and MgO may be in the range of 20 to 45 parts by weight in the total composition. When the mixed use amount of CaO and MgO falls within the above range, a sharp increase in melting temperature is prevented, To reduce the possibility of crystal formation during the fiberization operation, thereby enabling stable fiber production.
R 2 O, another modified oxide of the mineral wool fiber composition, functions as a melting agent which smoothly proceeds the melting when the glass is melted by the non-crosslinking of the glass. Here, R 2 O may be an alkali metal oxide, and examples thereof include Na 2 O and K 2 O. These two alkali metal oxides greatly increase the bio-solubility, but adversely affect the water resistance of the fibers and affect the shrinkage and recovery of the fibers. Therefore, it is preferable to use 0.1 to 5 parts by weight of Na 2 O + K 2 O based on 100 parts by weight of the mineral fiber composition in consideration of the bio-compatibility, water resistance and economical aspects. Specifically 1 to 4 parts by weight.
The Fe 2 O 3 and TiO 2 may be independently contained in an amount of 0.01 to 2 parts by weight, and FeO may be included in an amount of 0 to 1 part by weight.
In one embodiment, the starch according to the present invention may serve as a binder and serve to impart strength to the absorbent ceiling material. Starch differs depending on the raw materials. The use of a raw material having a low germination temperature has an advantage in that the drying heat ratio can be lowered. The starch usable in the present invention is not particularly limited as long as it has no problem in improving the strength of the ceiling material and improving the flame retardancy. Examples of the starch include corn starch, potato starch and tapioca starch May be used, more specifically, tapioca starch having a low gelatinization temperature and a film-transparent property may be used. The starch may be used in an amount of 1 to 5 parts by weight or in an amount of 2 to 4 parts by weight based on the total weight of the ceiling material. When the content of the starch is in the above range, the strength is prevented from being weakened and the flame retardancy is prevented from being lowered.
In one embodiment, the clay according to the present invention is added to improve the flame retardancy of the sound-absorbing ceiling board, and can be used without limitation within the ordinary range in the art, provided that the flame retardant performance is not problematic. For example, the clay may be selected from bentonite, diatomite, hectorite, kaolinite, halloysite, pyrpphyllite, laponite, montmorillonite, May be at least one clay mineral selected from the group consisting of montmorilonite, mica, illite, talc, smectite and attapulgite, The clay may be ataflugite. Atapulgite is a monoclinic mineral having the formula (Mg, Al) 2 Si 4 O 10 (OH) .4H 2 O and is white to gray. Also, it has a specific gravity of 3.63, a diameter of about 50 to 150 Å, and an elongated chain structure having a length of 1 to 5 μm. The crystal structure of the needle bed is observed by a microscope. It has a property of dispersing in colloidal form in water. Further, when dispersed at a high speed, the surface area swells to about 210 m 2 / g and has a high adsorption retention property. In addition, the needle-shaped crystal structure plays a role of complementing the property of deflection of the ceiling board and requires heat for evaporating the crystal water contained therein, thereby improving the flame retarding performance.
The content of the clay may be 5 to 12 parts by weight or 7 to 10 parts by weight based on the total weight of the bamboo ceiling material. When the content of the clay is in the above range, the flame retardancy is prevented from being lowered.
In one embodiment, the pulp according to the present invention has the function of imparting the wet strength in the formation of the ceiling material, and may additionally be added for the role of the binder, that is, for holding the fine particles. The pulp can be used without limitation within the usual range, provided that there is no problem in the strength and deflection property of the ceiling material. Specifically, in the present invention, sulfite pulp may be used. The sulfite pulp may be a chemical pulp with enhanced purity of the fiber by removing non-fibrinous materials such as lignin contained in the chip by growing the recycled paper into sulfurous acid. In the present invention, since the wet strength is weakened due to lightweight re-compounding, it is subjected to a defatting treatment, which softens and softens the feet of the fabric, so that the structure in the sound absorbing ceiling board is tightly entangled to form sag (SAG) . Sulfite pulp can be used in a refiner to increase the number of fibers by bridging phenomenon during the cracking process.
The content of the sulfite pulp may be 0.1 to 5 parts by weight or 0.5 to 2 parts by weight based on the total weight of the ceiling material. When the content of the sulfite pulp is in the above range, the physical properties such as wet strength and strength are improved, and the flame retardant performance can be prevented from deteriorating.
In one embodiment, the ceiling material according to the present invention may further comprise a broke. The broke makes the defective product into a powder form and recycles it so as not to affect the physical properties, so that the cost of disposal can be reduced.
The content of the broke may be 0 to 30 parts by weight, 5 to 25 parts by weight or 10 to 20 parts by weight based on the total weight of the ceiling material.
In one embodiment, the ceiling material according to the present invention may contain various additives for the purpose of imparting functionality to the ceiling material. For example, an additive for improving performance such as water repellency and whiteness may include a water repellent agent, a coagulant, a coagulant, and calcium carbonate. In addition, additives commonly used in the art can be selected appropriately for the purpose, and the content of the additive may be 1 to 5 parts by weight or 2 to 4 parts by weight based on the total weight of the ceiling material.
As the water-repellent agent, at least one selected from fluorine-based agents and the like can be used.
As the coagulant, a polymer flocculant may be used. Specifically, for example, a polyacrylamide system such as polyacrylamide, partial hydrolyzate of polyacrylamide, and polyacrylamide sulfone alkylate may be used.
In one embodiment, the sound-absorbing ceiling material according to the present invention was prepared by cutting a specimen 20 cm wide by 15 cm high and measuring the force when the load was broken at a descending speed of 50 mm / min , The flexural fracture strength may range from 130 to 240 N.
The bumpy ceiling member according to the present invention can realize significantly improved flexural fracture strength and blemish performance by appropriately adjusting the opening ratio of the surface of the ceiling material, the average opening diameter and the average opening depth in the range according to the present invention.
In one embodiment, the sound-absorbing ceiling material according to the present invention can be finished by applying a paint to the glass by attaching a glass tube to improve the surface appearance quality.
Hereinafter, the present invention will be described in detail with reference to Examples and Experimental Examples, but the present invention is not limited thereto.
Example 1 to 7
The blending ratio of each raw material in the production of Examples 1 to 7 is as shown in Table 1 below. The composition of the mineral wool in Table 1 is shown in Table 2 below.
The raw materials were put into a mixing tank according to the mixing ratios shown in Table 1 and then mixed. Next, the blended slurry was poured over a long distance and natural dehydrated, and then the natural dehydrated slurry was forced dehydrated once again using a vacuum pump. Next, the thickness was adjusted in the press, followed by drying in a dryer, followed by cutting, surface grinding and painting to produce a ceiling material having a final thickness of about 19 mm.
In order to form an opening in the ceiling surface, the opening ratio, the opening diameter and the opening depth were adjusted by a vertical movement using a punch pin press mechanism.
In order to improve the surface appearance quality, the glass was attached with glass tissue (fiber) to finish the painting.
The density and working conditions of the openings of Examples 1 to 7 are shown in Table 3 below.
Comparative Example 1 to 6
The blending ratios of the respective raw materials in the production of Comparative Examples 1 to 6 are as shown in Table 1 above. At this time, the composition of the mineral wool in Table 1 is as shown in Table 2 above.
The raw materials were put into a mixing tank according to the mixing ratios shown in Table 1 and then mixed. Next, the blended slurry was poured over a long distance and natural dehydrated, and then the natural dehydrated slurry was forced dehydrated once again using a vacuum pump. Next, the thickness was adjusted in the press, followed by drying in a dryer, followed by cutting, surface grinding and painting to produce a ceiling material having a final thickness of about 19 mm.
In order to form an opening in the ceiling surface, the opening ratio, the opening diameter and the opening depth were adjusted by a vertical movement using a punch pin press mechanism. Then, the glass was attached by applying a glass tissue (fiber), and the coating was finished.
The density of Comparative Examples 1 to 6 and the processing conditions of the openings are shown in Table 4 below.
Experimental Example : Property evaluation of ceiling material
Experiments were performed to evaluate flexural fracture strength and sound absorption performance according to the density and processing conditions of Examples 1 to 7 and Comparative Examples 1 to 6, and the results are shown in Tables 3 and 4 below.
At this time, the evaluation of flexural fracture strength was carried out by placing a specimen cut in a width of 20 cm and a length of 15 cm on a test machine and measuring the force when the load was broken at a descending speed of 50 mm / min. Flexural fracture strength measurements were made without glass ties (fiber).
The evaluation of the ash performance was evaluated in accordance with ASTM C 423a.
Referring to Table 3, in Examples 1 to 7, the flexural fracture strength was slightly lowered as the density was lowered. However, it was confirmed that the sound absorption performance was improved. The aperture ratio was adjusted to 3 to 5% To 1.2 mm, and the opening depth was adjusted to 10 mm or 14 mm, it was confirmed that the flexural fracture strength was kept high in the range of 134 to 205 N and the sound absorption performance was improved to the range of NCR 0.66 to 0.74 .
Referring to Table 4, in Comparative Examples 1 and 2, the opening diameter and the opening depth were reduced to increase the flexural fracture strength, and the sound absorption performance was as low as about 0.56 NCR. In addition, Comparative Examples 3 and 4 show that sound absorption performance is lowered when the aperture ratio is made low. In addition, in Comparative Examples 5 and 6, it was confirmed that when the opening diameter was increased to 2.5 mm, the flexural fracture strength decreased to 110 and 95 N in order to improve sound absorption performance.
Accordingly, it has been confirmed that the bumpy ceiling material according to the present invention can achieve the flexural fracture strength and the blemish performance which are remarkably improved even under various density conditions by suitably adjusting the aperture ratio, the opening diameter and the opening depth.
Claims (6)
The opening ratio is in the range of 3 to 5% based on the surface area,
When evaluating the sound absorption performance, the noise reduction coefficient (NRC) is 0.65 or more based on ASTM C 423 a,
Ceiling material containing mineral wool.
Wherein the opening satisfies the following formula (1): " (1) "
[Equation 1]
3 ? D 1 / D 2? 32
In Equation (1)
D 1 means the average depth of the opening,
D 2 means the average diameter of the opening.
Wherein the content of the mineral wool is 60 to 80 parts by weight based on the total weight of the ceiling material.
Mineral wool, mineral wool fibers, based on 100 parts by weight of SiO 2 30 to 50 parts by weight, Al 2 O 3 16 to 23 parts by weight, Fe 2 O 3 0.01 to 2 parts by weight, TiO 2 0.01 to 2 parts by weight of CaO, 25 to 35 parts by weight of CaO, 2 to 6 parts by weight of MgO, 0.1 to 5 parts by weight of R 2 O (containing at least one of Na 2 O and K 2 O) and 0.5 to 2 parts by weight of other components Characterized in that the ceiling material comprises at least one of:
The ceiling material,
When the specimen cut into 20 cm width and 15 cm length was installed on the test machine and the force at break was measured at the drop speed of 50 mm / min,
And a flexural fracture strength in the range of 130 to 240 N.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20190044201A (en) | 2017-10-20 | 2019-04-30 | 주식회사 케이씨씨 | Adhesive Composition and Ceiling Board using the Same |
| KR20220022309A (en) * | 2020-08-18 | 2022-02-25 | 주식회사 케이씨씨 | Acoustic absorption panel |
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| KR20070083624A (en) * | 2004-09-24 | 2007-08-24 | 어쿠스틱 패브릭 | Sound-absorbing fabric |
| KR20120116235A (en) | 2011-04-12 | 2012-10-22 | 주식회사 케이씨씨 | Mineral wool fiber composition having improved bio-solubility, and mineral wool |
| KR20130067421A (en) * | 2011-12-14 | 2013-06-24 | 주식회사 케이씨씨 | Mineral wool fiber composition having improved saline solubility and construction material containing the mineral wool fiber obtained therefrom |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20070083624A (en) * | 2004-09-24 | 2007-08-24 | 어쿠스틱 패브릭 | Sound-absorbing fabric |
| KR20120116235A (en) | 2011-04-12 | 2012-10-22 | 주식회사 케이씨씨 | Mineral wool fiber composition having improved bio-solubility, and mineral wool |
| KR20130067421A (en) * | 2011-12-14 | 2013-06-24 | 주식회사 케이씨씨 | Mineral wool fiber composition having improved saline solubility and construction material containing the mineral wool fiber obtained therefrom |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20190044201A (en) | 2017-10-20 | 2019-04-30 | 주식회사 케이씨씨 | Adhesive Composition and Ceiling Board using the Same |
| KR20220022309A (en) * | 2020-08-18 | 2022-02-25 | 주식회사 케이씨씨 | Acoustic absorption panel |
| KR102488996B1 (en) | 2020-08-18 | 2023-01-17 | 주식회사 케이씨씨 | Acoustic absorption panel |
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