KR102374736B1 - Non-asbestos insulation board with excellent mechanical strength and heat resistance and manufacturing method thereof - Google Patents
Non-asbestos insulation board with excellent mechanical strength and heat resistance and manufacturing method thereof Download PDFInfo
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- KR102374736B1 KR102374736B1 KR1020200019852A KR20200019852A KR102374736B1 KR 102374736 B1 KR102374736 B1 KR 102374736B1 KR 1020200019852 A KR1020200019852 A KR 1020200019852A KR 20200019852 A KR20200019852 A KR 20200019852A KR 102374736 B1 KR102374736 B1 KR 102374736B1
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- 238000009413 insulation Methods 0.000 title claims abstract description 70
- 239000010425 asbestos Substances 0.000 title claims abstract description 55
- 229910052895 riebeckite Inorganic materials 0.000 title claims abstract description 55
- 238000004519 manufacturing process Methods 0.000 title abstract description 13
- 238000002156 mixing Methods 0.000 claims abstract description 59
- 239000002994 raw material Substances 0.000 claims abstract description 39
- 239000002557 mineral fiber Substances 0.000 claims abstract description 36
- 239000000945 filler Substances 0.000 claims abstract description 35
- 239000012779 reinforcing material Substances 0.000 claims abstract description 32
- 239000011230 binding agent Substances 0.000 claims abstract description 30
- 239000000203 mixture Substances 0.000 claims abstract description 25
- 238000000034 method Methods 0.000 claims abstract description 22
- 238000000748 compression moulding Methods 0.000 claims abstract description 21
- 238000005498 polishing Methods 0.000 claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 37
- 239000000377 silicon dioxide Substances 0.000 claims description 18
- 239000000843 powder Substances 0.000 claims description 15
- 229910021487 silica fume Inorganic materials 0.000 claims description 14
- 239000010456 wollastonite Substances 0.000 claims description 12
- 229910052882 wollastonite Inorganic materials 0.000 claims description 12
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 9
- 229920006231 aramid fiber Polymers 0.000 claims description 9
- 239000004917 carbon fiber Substances 0.000 claims description 9
- 239000004568 cement Substances 0.000 claims description 7
- 239000003365 glass fiber Substances 0.000 claims description 6
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 6
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- 239000011148 porous material Substances 0.000 description 4
- 239000000378 calcium silicate Substances 0.000 description 3
- 229910052918 calcium silicate Inorganic materials 0.000 description 3
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 3
- 238000007580 dry-mixing Methods 0.000 description 3
- 239000011491 glass wool Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000004575 stone Substances 0.000 description 3
- 239000004113 Sepiolite Substances 0.000 description 2
- -1 airgel Inorganic materials 0.000 description 2
- 229920003235 aromatic polyamide Polymers 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 2
- 239000000920 calcium hydroxide Substances 0.000 description 2
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 2
- 235000011116 calcium hydroxide Nutrition 0.000 description 2
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- 230000003068 static effect Effects 0.000 description 2
- 239000000454 talc Substances 0.000 description 2
- 229910052623 talc Inorganic materials 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 241001474374 Blennius Species 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 208000001034 Frostbite Diseases 0.000 description 1
- 206010058467 Lung neoplasm malignant Diseases 0.000 description 1
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- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
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- 230000003670 easy-to-clean Effects 0.000 description 1
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- 238000010438 heat treatment Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 201000005202 lung cancer Diseases 0.000 description 1
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- 238000002360 preparation method Methods 0.000 description 1
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- 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
- E04B1/80—Heat insulating elements slab-shaped
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/04—Silica-rich materials; Silicates
- C04B14/043—Alkaline-earth metal silicates, e.g. wollastonite
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/04—Silica-rich materials; Silicates
- C04B14/06—Quartz; Sand
- C04B14/066—Precipitated or pyrogenic silica
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/04—Silica-rich materials; Silicates
- C04B14/10—Clay
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
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- C04B14/22—Glass ; Devitrified glass
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/30—Oxides other than silica
- C04B14/301—Oxides other than silica porous or hollow
- C04B14/302—Aerogels
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- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/38—Fibrous materials; Whiskers
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/38—Fibrous materials; Whiskers
- C04B14/42—Glass
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/38—Fibrous materials; Whiskers
- C04B14/46—Rock wool ; Ceramic or silicate fibres
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B16/00—Use of organic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of organic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B16/04—Macromolecular compounds
- C04B16/06—Macromolecular compounds fibrous
- C04B16/0675—Macromolecular compounds fibrous from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C04B16/0691—Polyamides; Polyaramides
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- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/14—Waste materials; Refuse from metallurgical processes
- C04B18/146—Silica fume
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- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/02—Selection of the hardening environment
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- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/30—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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Abstract
본 발명은 기계적 강도와 내열성능이 우수한 비석면 단열보드 및 그 제조방법에 관한 것으로, 광물섬유가 함유된 보강재 100 중량부, 결합재 70 내지 150 중량부 및 충전재 50 내지 80 중량부로 이루어지며, 광물섬유가 함유된 보강재, 결합재 및 충전재를 배합하는 원료배합단계, 상기 원료배합단계를 통해 배합된 배합물을 1000 내지 2000rpm의 속도로 2 내지 5분 동안 혼합하는 제1원료혼합단계, 상기 제1원료혼합단계를 통해 제조된 혼합물 100 중량부에 물 60 내지 100 중량부를 혼합하고 500 내지 1500rpm의 속도로 2 내지 5분 동안 혼합하는 제2원료혼합단계, 상기 제2원료혼합단계를 통해 제조된 혼합물을 180 내지 250kgf/cm2의 압력으로 압축성형하는 압축성형단계, 상기 압축성형단계를 통해 제조된 성형물을 70 내지 90%의 습도와 30 내지 60℃의 온도에서 24 내지 48시간 동안 양생하는 양생단계 및 상기 양생단계를 통해 양생된 성형물을 연마하는 연마단계를 통해 제조된다.
상기의 성분 및 제조방법을 통해 제조되는 비석면 단열보드는 보강재로 광물섬유가 함유되어 원료의 쏠림현상 억제로 인해 기계적 물성이 향상될 뿐만 아니라, 고온 내열성능이 우수하며 충전재로 에어로겔 또는 글라스 버블이 함유되어 절연성 및 단열성이 우수하다.The present invention relates to a non-asbestos insulation board having excellent mechanical strength and heat resistance and a method for manufacturing the same, comprising 100 parts by weight of a reinforcing material containing mineral fibers, 70 to 150 parts by weight of a binder, and 50 to 80 parts by weight of a filler, the mineral fiber A raw material mixing step of blending the reinforcing material, binder and filler containing A second raw material mixing step of mixing 60 to 100 parts by weight of water to 100 parts by weight of the mixture prepared through and mixing for 2 to 5 minutes at a speed of 500 to 1500 rpm, 180 to 180 to A compression molding step of compression molding at a pressure of 250 kgf/cm 2 , a curing step of curing the molded product produced through the compression molding step at a humidity of 70 to 90% and a temperature of 30 to 60° C. for 24 to 48 hours, and the curing It is manufactured through a polishing step of polishing the molded product cured through the steps.
The non-asbestos insulation board manufactured through the above components and manufacturing method contains mineral fiber as a reinforcing material, which not only improves mechanical properties due to suppression of raw material concentration, but also has excellent high-temperature heat resistance and airgel or glass bubble as a filler. It has excellent insulation and heat insulation properties.
Description
본 발명은 기계적 강도와 내열성능이 우수한 비석면 단열보드 및 그 제조방법에 관한 것으로, 더욱 상세하게는 보강재로 광물섬유(Mineral fiber)가 함유되어 원료의 쏠림현상 억제로 인해 기계적 물성이 향상될 뿐만 아니라, 고온 내열성능이 우수하며 충전재로 에어로겔(Aerogel) 또는 글라스 버블(Glass bubble)이 함유되어 절연성 및 단열성이 우수한 비석면 단열보드 및 그 제조방법에 관한 것이다.The present invention relates to a non-asbestos insulation board having excellent mechanical strength and heat resistance and a method for manufacturing the same, and more particularly, mineral fiber is contained as a reinforcing material, so that mechanical properties are improved due to suppression of the concentration of raw materials. Rather, it relates to a non-asbestos insulation board having excellent high-temperature heat resistance and containing airgel or glass bubble as a filler to have excellent insulation and heat insulation properties and a method for manufacturing the same.
단열재는 전도에 의한 열 이동으로 유발된 열 손실을 방지하거나 에너지 손실을 최소화하는데 사용된다. 일반적으로 단열재는 대기 또는 증기압 하에서 경화되는 충전재, 규산칼슘을 함유하는 결합재 및 보강섬유재로 제조된다. 상기 제조에 있어 결합재의 성분인 규산칼슘 또는 수화된 석회는 공지된 규산칼슘 수화물 구조를 형성하도록 실리카 및 물과 반응해야 한다. 응고 결합재의 구조는 반응 상태 하에서 실제로 반응할 수 있는 수화된 석회 및 규소의 상대적 비율에 따라 달라지게 된다. 이 때, 생성물의 특성은 부가되는 보강 섬유재료에 따라 달라지며, 이러한 목적에 유용하게 사용된 것이 석면이다. 따라서, 석면을 이용하여 제조된 단열판은 높은 내열성 및 경량으로 당업계에서 각광받아왔다.Insulation materials are used to prevent heat loss caused by heat transfer by conduction or to minimize energy loss. Insulation materials are generally made of fillers that are cured under atmospheric or vapor pressure, binders containing calcium silicate, and reinforcing fibers. Calcium silicate or hydrated lime, which is a component of the binder in this preparation, must react with silica and water to form the known calcium silicate hydrate structure. The structure of the solidified binder will depend on the relative proportions of hydrated lime and silicon that can actually react under the reaction conditions. At this time, the properties of the product depend on the added reinforcing fiber material, and asbestos is useful for this purpose. Therefore, the heat insulating plate manufactured using asbestos has been spotlighted in the art due to its high heat resistance and light weight.
그러나 석면은 주로 사문석이라는 자연석에서 얻어지는 것으로 서릿발 모양으로 끝이 날카롭고 섬유상으로 결정성장을 하여, 이와 같은 석면 분진을 흡입하게 되면 폐암 또는 중피종양의 원인이 되는 것으로 보고된 바 있다.However, asbestos is mainly obtained from a natural stone called serpentine, and has a sharp, fibrous crystal growth in the shape of a frostbite. Inhalation of such asbestos dust has been reported to cause lung cancer or mesothelial tumors.
이러한 석면의 유해성으로 인해 국내외에서 석면의 사용이 크게 규제되었으며, 석면을 대체하는 원료를 사용한 단열재 제품의 개발이 이루어지고 있다.Due to the harmfulness of asbestos, the use of asbestos has been largely regulated at home and abroad, and insulation products using raw materials that replace asbestos are being developed.
대한민국 특허등록 제10-0715450호에는 충진재 5 내지 40 중량%, 결합재 30 내지 80 중량%, 보강재 5 내지 50 중량%로 이루어지며, 상기 보강재가 방향족 폴리아라미드로 이루어진 유기섬유 단독 또는 상기 유기섬유 1종을 포함하고 세라믹, 유리섬유, 암면, 해포석 및 탈크로 이루어진 군에서 선택된 무기섬유 1종 이상을 포함하는 혼합형태인 것을 특징으로 하는 비석면 단열판이 개시되어 있는데, 상기의 선행기술은 석면 유사제품군으로 분류되며 인체유해성과 관련하여 논란이 되고 있는 암면, 해포석 및 탈크 등이 사용되는 문제점이 있었다.Republic of Korea Patent Registration No. 10-0715450 discloses 5 to 40 wt% of a filler, 30 to 80 wt% of a binder, and 5 to 50 wt% of a reinforcing material, wherein the reinforcing material is an organic fiber made of aromatic polyaramid alone or one kind of the organic fiber There is disclosed a non-asbestos insulation board, characterized in that it contains at least one inorganic fiber selected from the group consisting of ceramic, glass fiber, rock wool, sepiolite and talc, and the prior art is a group of asbestos-like products. There was a problem in the use of rock wool, sepiolite, and talc, which are classified and are controversial in relation to their harmfulness to the human body.
또한, 대한민국 특허공개 제10-2017-0103386호에는 황산바륨, 마이카, 규회석, 퍼라이트, 규석, 규사로 이루어진 군에서 선택된 충진재, 페놀계 수지로 구성된 결합재, 유기섬유, 무기섬유 및 이의 조합에서 선택된 결합재를 이용하여 제조된 비석면 절연 및 단열판이 개시되어 있는데, 상기의 선행기술은 충전재로 퍼라이트를 사용하며, 퍼라이트는 입도가 균일하지 않고, 구조가 정형화되어 있지 않기 때문에, 퍼라이트를 사용한 단열재는 전면에 걸쳐 일정한 열전도율을 나타내지 못하며, 성형과정에서 가해지는 높은 압력에 의해 퍼라이트 내에 기공층이 붕괴되어 단열효과가 저하되는 문제점이 있었다.In addition, in Korean Patent Laid-Open No. 10-2017-0103386, a filler selected from the group consisting of barium sulfate, mica, wollastonite, perlite, silica stone, and silica sand, a binder composed of a phenolic resin, an organic fiber, an inorganic fiber, and a binding material selected from combinations thereof There is disclosed a non-asbestos insulation and insulation board manufactured using There was a problem in that it did not exhibit a constant thermal conductivity throughout, and the pore layer in the perlite collapsed due to the high pressure applied during the molding process, thereby reducing the thermal insulation effect.
본 발명의 목적은 보강재로 광물섬유가 함유되어 원료의 쏠림현상 억제로 인해 기계적 물성이 향상될 뿐만 아니라, 고온 내열성능이 우수하며 충전재로 에어로겔 또는 글라스 버블이 함유되어 절연성 및 단열성이 우수한 비석면 단열보드 및 그 제조방법을 제공하는 것이다.It is an object of the present invention to contain mineral fibers as reinforcing materials, which not only improve mechanical properties due to suppression of raw material concentration, but also have excellent high-temperature heat resistance, and non-asbestos insulation with excellent insulation and heat insulation properties because airgel or glass bubbles are contained as fillers. To provide a board and a method for manufacturing the same.
본 발명의 목적은 광물섬유가 함유된 보강재 100 중량부, 결합재 70 내지 150 중량부 및 충전재 50 내지 80 중량부로 이루어지는 것을 특징으로 하는 기계적 강도와 내열성능이 우수한 비석면 단열보드를 제공함에 의해 달성된다.An object of the present invention is achieved by providing a non-asbestos insulation board having excellent mechanical strength and heat resistance, characterized in that it consists of 100 parts by weight of a mineral fiber-containing reinforcing material, 70 to 150 parts by weight of a binder, and 50 to 80 parts by weight of a filler. .
본 발명의 바람직한 특징에 따르면, 상기 광물섬유가 함유된 보강재는 광물섬유 100 중량부에 아라미드섬유 및 탄소섬유로 이루어진 그룹에서 선택된 하나 이상을 1 내지 10 중량부 혼합하여 이루어지는 것으로 한다.According to a preferred feature of the present invention, the reinforcing material containing the mineral fiber is made by mixing 1 to 10 parts by weight of at least one selected from the group consisting of aramid fibers and carbon fibers to 100 parts by weight of the mineral fiber.
본 발명의 더 바람직한 특징에 따르면, 상기 광물섬유는 유리면 및 광재면으로 이루어진 그룹에서 선택된 하나 이상으로 이루어지는 것으로 한다.According to a more preferred feature of the present invention, the mineral fiber is made of at least one selected from the group consisting of glass wool and slag wool.
본 발명의 더욱 바람직한 특징에 따르면, 상기 광물섬유가 함유된 보강재에는 유리섬유 및 세라믹으로 이루어진 그룹에서 선택된 하나 이상이 더 함유되는 것으로 한다.According to a more preferred feature of the present invention, at least one selected from the group consisting of glass fibers and ceramics is further contained in the reinforcing material containing the mineral fibers.
본 발명의 더욱 더 바람직한 특징에 따르면, 상기 결합재는 시멘트 및 점토로 이루어진 그룹에서 선택된 하나 이상으로 이루어지는 것으로 한다.According to an even more preferred feature of the present invention, the binder is made of at least one selected from the group consisting of cement and clay.
본 발명의 더욱 더 바람직한 특징에 따르면, 상기 충전재는 규회석, 글라스버블, 실리카흄 및 실리카분말로 이루어지는 것으로 한다.According to an even more preferred feature of the present invention, the filler is made of wollastonite, glass bubble, silica fume and silica powder.
본 발명의 더욱 더 바람직한 특징에 따르면, 상기 충전재는 규회석 100 중량부, 글라스버블 30 내지 80 중량부, 실리카흄 30 내지 80 중량부 및 실리카분말 30 내지 80 중량부로 이루어지는 것으로 한다.According to an even more preferred feature of the present invention, the filler is made of 100 parts by weight of wollastonite, 30 to 80 parts by weight of glass bubble, 30 to 80 parts by weight of silica fume, and 30 to 80 parts by weight of silica powder.
본 발명의 더욱 더 바람직한 특징에 따르면, 상기 충전재는 규회석, 에어로겔, 실리카흄 및 실리카분말로 이루어지는 것으로 한다.According to an even more preferred feature of the present invention, the filler is made of wollastonite, airgel, silica fume and silica powder.
본 발명의 더욱 더 바람직한 특징에 따르면, 상기 충전재는 규회석 100 중량부, 에어로겔 30 내지 80 중량부, 실리카흄 30 내지 80 중량부 및 실리카분말 30 내지 80 중량부로 이루어지는 것으로 한다.According to an even more preferred feature of the present invention, the filler is made of 100 parts by weight of wollastonite, 30 to 80 parts by weight of airgel, 30 to 80 parts by weight of silica fume, and 30 to 80 parts by weight of silica powder.
또한, 본 발명의 목적은 광물섬유가 함유된 보강재, 결합재 및 충전재를 배합하는 원료배합단계, 상기 원료배합단계를 통해 배합된 배합물을 1000 내지 2000rpm의 속도로 2 내지 5분 동안 혼합하는 제1원료혼합단계, 상기 제1원료혼합단계를 통해 제조된 혼합물 100 중량부에 물 60 내지 100 중량부를 혼합하고 500 내지 1500rpm의 속도로 2 내지 5분 동안 혼합하는 제2원료혼합단계, 상기 제2원료혼합단계를 통해 제조된 혼합물을 180 내지 250kgf/cm2의 압력으로 압축성형하는 압축성형단계, 상기 압축성형단계를 통해 제조된 성형물을 70 내지 90%의 습도와 30 내지 60℃의 온도에서 24 내지 48시간 동안 양생하는 양생단계 및 상기 양생단계를 통해 양생된 성형물을 연마하는 연마단계로 이루어지는 것을 특징으로 하는 기계적 강도와 내열성능이 우수한 비석면 단열보드의 제조방법을 제공함에 의해서도 달성될 수 있다.In addition, an object of the present invention is a raw material mixing step of blending a reinforcing material containing mineral fiber, a binder and a filler, and a first raw material for mixing the mixture blended through the raw material mixing step at a speed of 1000 to 2000 rpm for 2 to 5 minutes Mixing step, a second raw material mixing step of mixing 60 to 100 parts by weight of water to 100 parts by weight of the mixture prepared through the first raw material mixing step and mixing at a speed of 500 to 1500 rpm for 2 to 5 minutes, the second raw material mixing A compression molding step of compression molding the mixture prepared through the steps of 180 to 250 kgf / cm 2 at a pressure of 24 to 48 at a temperature of 30 to 60 ° C with a humidity of 70 to 90% of the molded product prepared through the compression molding step It can also be achieved by providing a method for manufacturing a non-asbestos insulation board having excellent mechanical strength and heat resistance, characterized in that it consists of a curing step of curing for a period of time and a polishing step of polishing the molded product cured through the curing step.
본 발명에 따른 기계적 강도와 내열성능이 우수한 비석면 단열보드 및 그 제조방법은 보강재로 광물섬유가 함유되어 원료의 쏠림현상 억제로 인해 기계적 물성이 향상될 뿐만 아니라, 고온 내열성능이 우수하며 충전재로 에어로겔 또는 글라스 버블이 함유되어 절연성 및 단열성이 우수한 비석면 단열보드를 제공하는 탁월한 효과를 나타낸다.The non-asbestos insulation board having excellent mechanical strength and heat resistance according to the present invention and its manufacturing method contain mineral fiber as a reinforcing material, so that mechanical properties are improved by suppressing the concentration of raw materials, but also has excellent high temperature heat resistance and can be used as a filler. It has an excellent effect of providing a non-asbestos insulation board with excellent insulation and heat insulation properties because it contains airgel or glass bubbles.
도 1 내지 2는 본 발명의 실시예 1을 통해 제조된 기계적 강도와 내열성능이 우수한 비석면 단열보드의 성분을 분석한 시험성적서이다.1 to 2 are test reports analyzing the components of the non-asbestos insulation board having excellent mechanical strength and heat resistance prepared in Example 1 of the present invention.
이하에는, 본 발명의 바람직한 실시예와 각 성분의 물성을 상세하게 설명하되, 이는 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자가 발명을 용이하게 실시할 수 있을 정도로 상세하게 설명하기 위한 것이지, 이로 인해 본 발명의 기술적인 사상 및 범주가 한정되는 것을 의미하지는 않는다.Hereinafter, a preferred embodiment of the present invention and the physical properties of each component will be described in detail, which is intended to describe in detail enough that a person of ordinary skill in the art to which the present invention pertains can easily carry out the invention, This does not mean that the technical spirit and scope of the present invention is limited.
본 발명에 따른 기계적 강도와 내열성능이 우수한 비석면 단열보드는 광물섬유가 함유된 보강재 100 중량부, 결합재 70 내지 150 중량부 및 충전재 50 내지 80 중량부로 이루어진다.The non-asbestos insulation board having excellent mechanical strength and heat resistance according to the present invention consists of 100 parts by weight of a mineral fiber-containing reinforcing material, 70 to 150 parts by weight of a binder, and 50 to 80 parts by weight of a filler.
상기 광물섬유가 함유된 보강재는 본 발명에 따른 기계적 강도와 내열성능이 우수한 비석면 단열보드의 주재료가 되는 성분으로, 광물섬유 100 중량부에 아라미드섬유 및 탄소섬유로 이루어진 그룹에서 선택된 하나 이상을 1 내지 10 중량부 혼합하여 이루어지는데, 석면 성분이 함유되지 않으면서도 보강재로 유기섬유만을 사용하는 경우에 발생하는 정전기 현상과 원료의 쏠림현상을 억제하여 절연성능을 나타내며 기계적 강도가 고르게 발현되는 비석면 단열보드를 제공하는 역할을 한다.The reinforcing material containing the mineral fiber is a main material of the non-asbestos insulation board having excellent mechanical strength and heat resistance according to the present invention. Non-asbestos insulation that exhibits insulating performance and uniform mechanical strength by suppressing static electricity and raw material concentration that occur when only organic fibers are used as reinforcing materials without containing asbestos components. It serves to provide the board.
이때, 상기 광물섬유는 유리면(Glass Wool) 및 광재면(Mineral Wool)로 이루어진 그룹에서 선택된 하나 이상으로 이루어지는 것이 바람직하다.In this case, the mineral fiber is preferably made of at least one selected from the group consisting of glass wool and mineral wool.
또한, 상기 아라미드섬유, 탄소섬유 및 아라미드섬유와 탄소섬유의 혼합물의 함량이 1 중량부 미만인 경우에는 비석면 단열보드의 기계적 강도가 저하되며, 상기 아라미드섬유, 탄소섬유 및 아라미드섬유와 탄소섬유의 혼합물의 함량이 10 중량부를 초과하는 경우에는 절연효과가 저하되어 정전기가 발생하며 섬유간 엉킴현상으로 인해 가공성이 저하되고 제조비용을 지나치게 증가시키게 된다.In addition, when the content of the aramid fiber, carbon fiber, and the mixture of aramid fiber and carbon fiber is less than 1 part by weight, the mechanical strength of the non-asbestos insulation board is reduced, and the aramid fiber, carbon fiber, and a mixture of aramid fiber and carbon fiber When the content of is more than 10 parts by weight, the insulating effect is lowered, static electricity is generated, processability is reduced due to entanglement between fibers, and the manufacturing cost is excessively increased.
또한, 상기 광물섬유가 함유된 보강재에는 유리섬유 및 세라믹으로 이루어진 그룹에서 선택된 하나 이상이 더 함유될 수도 있는데, 유리섬유, 세라믹 성분 및 유리섬유와 세라믹의 혼합물이 더 함유되면 비석면 보드의 기계적 강도를 더욱 향상시킬 수 있으며, 유리섬유, 세라믹 성분 및 유리섬유와 세라믹의 혼합물의 함량은 상기 광물섬유가 함유된 보강재에 함유된 광물섬유 100 중량부 대비 5 내지 10 중량부가 바람직하다.In addition, the reinforcing material containing the mineral fiber may further contain one or more selected from the group consisting of glass fiber and ceramic. can be further improved, and the content of the glass fiber, ceramic component, and the mixture of glass fiber and ceramic is preferably 5 to 10 parts by weight compared to 100 parts by weight of the mineral fiber contained in the reinforcing material containing the mineral fiber.
상기 결합재는 70 내지 150 중량부가 함유되며, 시멘트 및 점토로 이루어진 그룹에서 선택된 하나 이상으로 이루어지는데, 본 발명에 따른 비석면 단열보드를 구성하는 충전재 및 광물섬유가 함유된 보강재를 결속시킬 뿐만 아니라, 고온 내열성이 향상된 단열보드를 제공하는 역할을 한다.The binder contains 70 to 150 parts by weight, and is made of one or more selected from the group consisting of cement and clay. It serves to provide an insulation board with improved high temperature heat resistance.
상기 결합재의 함량이 70 중량부 미만이면 본 발명에 따른 비석면 단열보드의 결합력이 낮아져 기계적 강도가 저하될 수 있으며, 상기 결합재의 함량이 150 중량부를 초과하게 되면 상대적으로 광물섬유가 함유된 보강재와 충전재의 함량이 줄어들어 내충격성이 저하될 수 있다.If the content of the binder is less than 70 parts by weight, the bonding strength of the non-asbestos insulation board according to the present invention may be lowered and thus the mechanical strength may be reduced. As the content of the filler is reduced, the impact resistance may be deteriorated.
상기의 성분으로 이루어지는 결합재를 사용하는 경우, 500℃의 온도에서도 물성의 저하가 발생하지 않아 우수한 내열성능을 나타내는 비석면 단열보드를 제조할 수 있다.When a binder made of the above components is used, a non-asbestos insulation board exhibiting excellent heat resistance performance can be manufactured without deterioration of physical properties even at a temperature of 500°C.
상기 충전재는 50 내지 80 중량부가 함유되며, 본 발명에 따른 비석면 단열보드의 기계적 강도를 향상시키는 역할을 하는데, 규회석, 글라스버블, 실리카흄 및 실리카분말로 이루어지며, 규회석 100 중량부, 글라스버블 30 내지 80 중량부, 실리카흄 30 내지 80 중량부 및 실리카분말 30 내지 80 중량부로 이루어지는 것이 바람직하다.The filler contains 50 to 80 parts by weight, and serves to improve the mechanical strength of the non-asbestos insulation board according to the present invention. to 80 parts by weight, 30 to 80 parts by weight of silica fume, and 30 to 80 parts by weight of silica powder.
또한, 상기 충전재는 규회석, 에어로겔, 실리카흄 및 실리카분말로 이루어질 수도 있는데, 이 경우에는 규회석 100 중량부, 에어로겔 30 내지 80 중량부, 실리카흄 30 내지 80 중량부 및 실리카분말 30 내지 80 중량부로 이루어지는 것이 바람직하다.In addition, the filler may consist of wollastonite, airgel, silica fume and silica powder. In this case, it is preferable to include 100 parts by weight of wollastonite, 30 to 80 parts by weight of airgel, 30 to 80 parts by weight of silica fume, and 30 to 80 parts by weight of silica powder. Do.
상기 규회석은 고유의 침상구조로 인해 비석면 보드의 기계적 강도를 향상시키는 역할을 한다.The wollastonite serves to improve the mechanical strength of the non-asbestos board due to its unique acicular structure.
상기 글라스버블이나 에어로겔은 30 내지 80 중량부가 함유되며, 본 발명에 따른 비석면 단열보드에 단열 및 절연효과를 부여하는 역할을 하는데, 상기 글라스버블이나 에어로겔의 함량이 30 중량부 미만이면 상기의 효과가 미미하며, 상기 글라스버블이나 에어로겔의 함량이 80 중량부를 초과하게 되면 비석면 단열보드에 기공이 지나치게 증가하여 기계적 강도 및 내충격성을 저하시킬 수 있다.The glass bubble or airgel contains 30 to 80 parts by weight, and serves to provide heat insulation and insulation effect to the non-asbestos insulation board according to the present invention. If the content of the glass bubble or airgel is less than 30 parts by weight, the effect is insignificant, and when the content of the glass bubble or airgel exceeds 80 parts by weight, the pores in the non-asbestos insulation board are excessively increased, thereby reducing mechanical strength and impact resistance.
상기 실리카흄(Silica Fume)은 30 내지 80 중량부가 함유되며, 결합재 사이에 공극을 채워 고강도의 내구성을 부여하는 역할을 하는데, 상기 실리카흄의 함량이 30 중량부 미만이면 상기의 효과가 미미하며, 상기 실리카흄의 함량이 80 중량부를 초과하게 되면 결합재의 성능을 저하시켜 비석면 단열보드의 기계적 물성이 저하될 수 있다.The silica fume (Silica Fume) contains 30 to 80 parts by weight, and serves to fill the voids between the binders to give high strength durability. If the content of the silica fume is less than 30 parts by weight, the above effect is insignificant, If the content exceeds 80 parts by weight, the mechanical properties of the non-asbestos insulation board may be deteriorated by reducing the performance of the binder.
상기 실리카분말은 30 내지 80 중량부가 함유되며, 고내열성으로 열팽창율이 낮고 열충격에 강하기 때문에 비석면 단열보드에 내열성능을 향상시키는 역할을 하는데, 상기 실리카분말의 함량이 30 중량부 미만이면 상기의 효과가 미미하며, 상기 실리카분말의 함량이 80 중량부를 초과하게 되면 비석면 단열보드의 기공 내에 공간을 실리카분말이 지나치게 많이 차지하게 되어 단열효과를 저하시킬 수 있다.The silica powder contains 30 to 80 parts by weight, and serves to improve the heat resistance performance of the non-asbestos insulation board because it has a low coefficient of thermal expansion with high heat resistance and is strong in thermal shock. If the content of the silica powder is less than 30 parts by weight, the above The effect is insignificant, and when the content of the silica powder exceeds 80 parts by weight, the silica powder occupies too much space in the pores of the non-asbestos insulation board, thereby reducing the thermal insulation effect.
상기의 성분으로 이루어지는 충전재의 함량이 50 중량부 미만이면 본 발명에 따른 비석면 단열보드의 내충격성이 저하될 수 있으며, 상기 충전재의 함량이 80 중량부를 초과하게 되면 단열성능이 저하될 수 있다.If the content of the filler comprising the above components is less than 50 parts by weight, the impact resistance of the non-asbestos insulation board according to the present invention may be reduced, and if the content of the filler exceeds 80 parts by weight, the insulation performance may be reduced.
또한, 본 발명에 따른 기계적 강도와 내열성능이 우수한 비석면 단열보드의 제조방법은 광물섬유가 함유된 보강재, 결합재 및 충전재를 배합하는 원료배합단계, 상기 원료배합단계를 통해 배합된 배합물을 1000 내지 2000rpm의 속도로 2 내지 5분 동안 혼합하는 제1원료혼합단계, 상기 제1원료혼합단계를 통해 제조된 혼합물 100 중량부에 물 60 내지 100 중량부를 혼합하고 500 내지 1500rpm의 속도로 2 내지 5분 동안 혼합하는 제2원료혼합단계, 상기 제2원료혼합단계를 통해 제조된 혼합물을 180 내지 250kgf/cm2의 압력으로 압축성형하는 압축성형단계, 상기 압축성형단계를 통해 제조된 성형물을 70 내지 90%의 습도와 30 내지 60℃의 온도에서 24 내지 48시간 동안 양생하는 양생단계 및 상기 양생단계를 통해 양생된 성형물을 연마하는 연마단계로 이루어진다.In addition, the method for manufacturing a non-asbestos insulation board having excellent mechanical strength and heat resistance according to the present invention comprises a raw material mixing step of mixing a mineral fiber-containing reinforcing material, a binder and a filler; A first raw material mixing step of mixing for 2 to 5 minutes at a speed of 2000 rpm, 60 to 100 parts by weight of water are mixed with 100 parts by weight of the mixture prepared through the first raw material mixing step, and 2 to 5 minutes at a speed of 500 to 1500 rpm A second raw material mixing step of mixing during the compression molding step of compression molding the mixture prepared through the second raw material mixing step at a pressure of 180 to 250 kgf / cm 2 , 70 to 90 of the molding produced through the compression molding step It consists of a curing step of curing for 24 to 48 hours at a humidity of % and a temperature of 30 to 60° C., and a polishing step of polishing the molded product cured through the curing step.
상기 원료배합단계는 광물섬유가 함유된 보강재, 결합재 및 충전재를 배합하는 단계로, 광물섬유가 함유된 보강재 100 중량부, 결합재 70 내지 150 중량부 및 충전재 50 내지 80 중량부를 배합하여 이루어지는데, 상기 원료배합단계는 건식 배합법, 부분 건식 배합법 및 습식 배합법을 사용할 수 있으나, 바람직하게는 건식 배합법을 사용하는 것이 바람직하다.The raw material mixing step is a step of blending the mineral fiber-containing reinforcing material, the binder and the filler, 100 parts by weight of the mineral fiber-containing reinforcing material, 70 to 150 parts by weight of the binder, and 50 to 80 parts by weight of the filler. In the raw material mixing step, a dry blending method, a partial dry blending method and a wet blending method may be used, but it is preferable to use a dry blending method.
건식배합법의 경우 물을 사용하지 않아 온도가 낮은 겨울철에도 동결의 문제 없이 작업이 용이하고, 배합기의 청소가 용이한 장점이 있다.In the case of the dry mixing method, there is no use of water, so it is easy to work without a problem of freezing even in winter when the temperature is low, and it is easy to clean the mixing machine.
이때, 상기 광물섬유가 함유된 보강재, 결합재 및 충전재의 함량, 구체적인 성분 및 역할은 상기 기계적 강도와 내열성능이 우수한 비석면 단열보드에 기재된 내용과 동일하므로, 이에 대한 설명은 생략하기로 한다.At this time, the content, specific components and roles of the mineral fiber-containing reinforcing material, binder, and filler are the same as those described in the non-asbestos insulation board having excellent mechanical strength and heat resistance, so a description thereof will be omitted.
상기 제1원료혼합단계는 상기 원료배합단계를 통해 배합된 배합물을 혼합하는 단계로, 상기 원료배합단계를 통해 배합된 배합물을 1000 내지 2000rpm의 속도로 2 내지 5분 동안 교반하는 과정으로 이루어진다.The first raw material mixing step is a step of mixing the blend blended through the raw material blending step, and the blend blended through the raw material blending step is stirred at a speed of 1000 to 2000 rpm for 2 to 5 minutes.
상기 제1원료혼합단계에서 교반속도가 1000rpm미만이거나 교반시간이 2분 미만인 경우에는 광물섬유가 함유된 보강재, 결합재 및 충전재가 고르게 혼합되지 못해 균일한 물성을 나타내는 비석면 단열보드를 제조할 수 없고, 상기 교반속도가 2000rpm을 초과하거나 교반시간이 5분을 초과하게 되면 원료에 함유된 섬유 성분의 길이가 지니치게 짧아져 결합력 저하로 인해 비석면 단열보드의 기계적 강도가 저하될 수 있다.In the first raw material mixing step, when the stirring speed is less than 1000 rpm or the stirring time is less than 2 minutes, the reinforcing material, binder, and filler containing mineral fibers cannot be mixed evenly, so that a non-asbestos insulation board exhibiting uniform physical properties cannot be manufactured. , When the stirring speed exceeds 2000 rpm or the stirring time exceeds 5 minutes, the length of the fiber component contained in the raw material is excessively short, and the mechanical strength of the non-asbestos insulation board may be reduced due to a decrease in bonding strength.
상기 제2원료혼합단계는 상기 제1원료혼합단계를 통해 제조된 혼합물 100 중량부에 물 60 내지 100 중량부를 혼합하고 500 내지 1500rpm의 속도로 2 내지 5분 동안 혼합하는 과정으로 이루어지는데, 상기와 같은 양의 물을 혼합한 후에 혼합을 진행하게되면, 원료 성분에 함유된 결합재 성분에 점섬이 부여됨과 동시에 광물섬유가 함유된 보강재 및 충전재 성분이 고르게 혼합되어 균일한 물성을 나타내는 비석면 단열보드를 제공할 수 있다.The second raw material mixing step consists of mixing 60 to 100 parts by weight of water with 100 parts by weight of the mixture prepared through the first raw material mixing step and mixing at a speed of 500 to 1500 rpm for 2 to 5 minutes, and When mixing is carried out after mixing the same amount of water, viscosity is given to the binder component contained in the raw material component, and at the same time, the reinforcing material and filler component containing mineral fibers are evenly mixed to produce a non-asbestos insulation board that exhibits uniform physical properties. can provide
특히, 결합재로 본 발명과 같이 시멘트나 점토 등을 사용하는 경우에는 통상적으로 3600 내지 6000rpm의 고속으로 10분 가까이 교반을 진행해야 원료성분과 결합재가 고르게 혼합되는데, 상기와 같은 통상의 조건으로 교반이 진행되면 경제적으로도 바람직하지 못할 뿐만 아니라, 원료에 함유된 섬유성분의 길이가 지나치게 짧아져 결합력 저하로 인한 기계적 강도의 저하현상이 발생할 수 있는데, 본 발명과 같이 제2원료혼합단계를 진행하게 되면 상기의 문제점을 해소할 수 있다.In particular, when cement or clay is used as a binder as in the present invention, stirring is usually performed at a high speed of 3600 to 6000 rpm for close to 10 minutes so that the raw material and binder are evenly mixed. If it proceeds, it is not only economically undesirable, but the length of the fiber component contained in the raw material is too short, which may cause a decrease in mechanical strength due to a decrease in bonding force. The above problems can be solved.
상기 압축성형단계는 상기 제2원료혼합단계를 통해 제조된 혼합물을 압축성형기에 투입하여 압축성형하는 단계로, 상기 제2원료혼합단계를 통해 제조된 혼합물을 압축성형기에 투입하고 180 내지 250kgf/cm2의 압력으로 압축성형하는 과정으로 이루어진다.The compression molding step is a step of compression molding by putting the mixture prepared through the second raw material mixing step into a compression molding machine. It consists of the process of compression molding with a pressure of 2 .
상기 압축성형단계에서 압력이 180kgf/cm2 미만인 경우에는 성형이 제대로 진행되지 못하며, 압력이 250kgf/cm2 를 초과하는 경우에는 지나치게 높은 압력을 가하게 되는 것으로, 비석면 단열보드 내에 기공층이 붕괴될 수 있기 때문에 바람직하지 못하다.In the compression molding step, if the pressure is less than 180kgf/cm 2 , the molding does not proceed properly, and when the pressure exceeds 250kgf/cm 2 , excessively high pressure is applied, and the pore layer in the non-asbestos insulation board will collapse. It is not preferable because it can
상기 양생단계는 상기 압축성형단계를 통해 제조된 성형물을 양생하는 단계로, 상기 압축성형단계를 통해 제조된 성형물을 70 내지 90%의 습도와 30 내지 60℃의 온도에서 24 내지 48시간 동안 양생하는 과정으로 이루어진다.The curing step is a step of curing the molding manufactured through the compression molding step, and curing the molding manufactured through the compression molding step at a humidity of 70 to 90% and a temperature of 30 to 60° C. for 24 to 48 hours. made by the process
상기의 과정을 통해 양생이 완료되면, 대기중에서 추가로 15 내지 20시간 동안 자연양생을 진행할 수도 있으며, 상기의 과정을 통해 양생된 성형물은 우수한 기계적 강도와 치수안정성을 나타낸다.When curing is completed through the above process, natural curing may be performed for an additional 15 to 20 hours in the air, and the molded product cured through the above process exhibits excellent mechanical strength and dimensional stability.
상기 연마단계는 상기 양생단계를 통해 양생된 성형물을 연마하는 단계로, 상기 양생단계를 통해 양생된 성형물의 표면을 연마하여 외관품질을 개선하고 용도에 맞도록 가공하는 단계다.The polishing step is a step of polishing the molded product cured through the curing step, and is a step of polishing the surface of the molded product cured through the curing step to improve the appearance quality and process it to suit the purpose.
이하에서는, 본 발명에 따른 기계적 강도와 내열성능이 우수한 비석면 단열보드의 제조방법 및 그 제조방법을 통해 제조된 비석면 단열보드의 물성을 실시예를 들어 설명하기로 한다.Hereinafter, a method for manufacturing a non-asbestos insulating board having excellent mechanical strength and heat resistance according to the present invention and physical properties of a non-asbestos insulating board manufactured through the manufacturing method will be described with reference to examples.
<실시예 1><Example 1>
보강재{광물섬유(유리면) 34kg, 아라미드섬유 1kg, 탄소섬유 1kg} 36kg, 결합재(시멘트) 40kg, 충전재(규회석 9kg, 글라스버블 5kg, 실리카흄 5kg, 실리카분말 5kg) 24kg을 배합하여 배합물을 제조한 후에, 상기 배합물을 교반장치가 구비된 건식혼합기에 투입하고 1400rpm의 속도로 3분 동안 건식혼합한 후에, 건식혼합된 혼합물 100 중량부를 습식혼합기에 투입하고 물 100 중량부를 추가로 투입한 후에 1000rpm의 속도로 3분간 혼합하여 혼합물을 제조하고, 제조된 혼합물을 45kg을 계랑한 후에 압축성형기에 투입하고 200kgf/cm2의 압력으로 10분 동안 압축하여 성형물을 제조하고, 제조된 성형물을 습도 80%와 40℃의 온도조건에서 24시간 동안 양생하고, 대기 중에서 18시간 동안 추가로 양생하고, 양생된 성형물의 표면을 연마하여 20T 두께의 기계적 강도와 내열성능이 우수한 비석면 단열보드를 제조하였다.Reinforcing material (34 kg of mineral fiber (glass wool), 1 kg of aramid fiber, 1 kg of carbon fiber} 36 kg, binder (cement) 40 kg, filler (9 kg of wollastonite, 5 kg of glass bubble, 5 kg of silica fume, 5 kg of silica powder) 24 kg , After putting the mixture into a dry mixer equipped with a stirring device and dry-mixing at a speed of 1400 rpm for 3 minutes, 100 parts by weight of the dry-mixed mixture is put into the wet mixer, and 100 parts by weight of water is additionally added, followed by a speed of 1000 rpm A mixture was prepared by mixing with a furnace for 3 minutes, and 45 kg of the prepared mixture was put into a compression molding machine and compressed at a pressure of 200 kgf/cm 2 for 10 minutes to prepare a molded product, and the manufactured molding was subjected to a humidity of 80% and 40 Curing for 24 hours at a temperature condition of ℃, further curing for 18 hours in the air, and grinding the surface of the cured molded product was manufactured a non-asbestos insulation board with a thickness of 20T and excellent mechanical strength and heat resistance.
<실시예 2><Example 2>
상기 실시예 1과 동일하게 진행하되, 충진재의 성분 중 글라스버블 대신 에어로겔을 사용하여 기계적 강도와 내열성능이 우수한 비석면 단열보드를 제조하였다.A non-asbestos insulation board having excellent mechanical strength and heat resistance was prepared using the same procedure as in Example 1, but using airgel instead of glass bubble among the components of the filler.
<실시예 3><Example 3>
상기 실시예 1과 동일하게 진행하되, 보강재{광물섬유(광재면) 37kg, 아라미드섬유 1kg, 탄소섬유 1kg} 39kg, 결합재(시멘트) 37kg, 충전재(규회석 9kg, 에어로겔 5kg, 실리카흄 5kg, 실리카분말 5kg) 24kg을 배합하여 기계적 강도와 내열성능이 우수한 비석면 단열보드를 제조하였다.Proceed in the same manner as in Example 1, but reinforcing material {mineral fiber (mineral cotton) 37 kg,
삭제delete
<비교예 1><Comparative Example 1>
보강재(폴리아라미드섬유 3kg, 해포석 17kg) 20kg, 충전재(운모) 10kg, 결합재(시멘트) 70kg을 배합하여 배합물을 제조한 후에, 상기 배합물을 교반장치가 구비된 혼합기에 투입하고 3600rpm의 속도로 10분 동안 건식혼합한 후에, 건식혼합된 혼합물 100 중량부 대비 물 100 중량부를 추가로 투입한 후에 3600rpm의 속도로 10분 동안 습식혼합하여 혼합물을 제조하고, 제조된 혼합물을 38kg을 계랑한 후에 압축성형기에 투입하고 200kgf/cm2의 압력으로 10분 동안 압축하여 성형물을 제조하고, 제조된 성형물을 습도 80%와 40℃의 온도조건에서 24시간 동안 양생하고, 대기 중에서 18시간 동안 추가로 양생하고, 양생된 성형물의 표면을 연마하여 20T 두께의 단열보드를 제조하였다.After preparing a mixture by mixing 20 kg of reinforcing material (3 kg of polyaramid fiber, 17 kg of seaweed stone), 10 kg of filler (mica), and 70 kg of binder (cement), put the mixture into a mixer equipped with a stirring device and put it in a mixer equipped with a stirring device and put it in a speed of 3600 rpm for 10 minutes After dry mixing for a while, 100 parts by weight of water relative to 100 parts by weight of the dry mixed mixture was additionally added, followed by wet mixing at a speed of 3600 rpm for 10 minutes to prepare a mixture, and after weighing 38 kg of the prepared mixture in a compression molding machine Injected and compressed for 10 minutes at a pressure of 200kgf/cm 2 to prepare a molded product, cured for 24 hours at a temperature of 80% humidity and 40° C., and additionally cured for 18 hours in the air, and cured By grinding the surface of the molded product, a 20T-thick insulation board was manufactured.
상기 실시예 1 내지 3 및 비교예 1을 통해 제조된 단열보드의 굴곡강도, 충격강도, 절연파괴강도 및 열전도율을 측정하여 아래 표 1에 나타내었다.The flexural strength, impact strength, dielectric breakdown strength and thermal conductivity of the insulation boards prepared in Examples 1 to 3 and Comparative Example 1 were measured and shown in Table 1 below.
{단, 굴곡강도는 제조된 단열보드를 가로 20mm×세로 140mm×두께 10mm로 절단하여 시험편을 준비하고, 100mm 떨어진 두 지점 위에 수평으로 얹어 양 지점 중앙에 서서히 하중을 걸어 절단될 때의 하중을 측정하는 방법을 이용하였으며, 이때 굴곡강도는 하기 수학식 1에 의해 산출하였다. 정상상태의 시험은 실온에서 진행하며, 가열 후의 굴곡강도는 시험편을 500℃의 노(爐) 안에서 3시간 동안 가열한 후 상온으로 냉각한 상태에서 시험하였다.{However, for flexural strength, prepare a test piece by cutting the manufactured insulation board to 20mm wide × 140mm long × 10mm thick, and place it horizontally on two points 100mm apart and gradually apply a load to the center of both points to measure the load when cutting was used, and at this time, the flexural strength was calculated by
수학식 1
(상기에서, P:힘 {kgf(N)}, L:지점 사이의 거리(100mm), b:시험편의 폭(10∼20mm), 및 h:시험편의 두께(mm)이다.(In the above, P: force {kgf (N)}, L: the distance between points (100 mm), b: the width of the test piece (10 to 20 mm), and h: the thickness of the test piece (mm).
또한, 충격강도는 제조된 단열보드를 가로 10mm×세로 90mm×두께 10mm로 절단하여 시험편을 준비한 다음, 샤르피 충격시험기(용량 약 30 kgfㆍcm){Nㆍcm}를 이용하여 지점사이의 거리를 60mm로 하고, 준비된 시험편을 양 지점에 얹고 그 중앙부를 망치로 1회 충격하여 절단되는 최소의 kgfㆍcm{Nㆍcm}를 절입부에서의 원 단면적(cm2)으로 나누어 내 충격치로 결정하였다. 판의 두께 8mm 이하의 것은 시험하지 않는다.In addition, the impact strength was measured by cutting the manufactured insulation board into width 10mm × length 90mm × thickness 10mm to prepare a test piece, and then using a Charpy impact tester (capacity about 30 kgf·cm) {N·cm} to measure the distance between the points 60 mm, the prepared test piece was placed on both points, and the minimum kgf·cm{N·cm} cut by hitting the center part with a hammer once was divided by the circular cross-sectional area (cm 2 ) at the cut-out part to determine the impact resistance value . The plate thickness of 8mm or less is not tested.
또한, 절연파괴강도는 제조된 단열보드를 가로 50mm×세로 50mm×두께 5mm로 절단하여 시험편을 준비한 다음, 시험 온도 23℃ 및 상대 습도 50% 하에서, 섬락을 방지하기 위해 절연유가 든 기름중탕 속에서 상·하 동일한 지름인 250mm의 실린더형 전극 사이의 중앙에 시험편을 놓고 단시간 시험방법으로 AC 60Hz의 상용주파 전압을 0에서부터 3000V/s의 속도로 상승시켜 시편이 파괴되었을 때의 파괴전압을 측정하는 방법을 이용하였다.In addition, the dielectric breakdown strength is measured by cutting the manufactured insulation board to 50mm in width × 50mm in length × 5mm in thickness to prepare a test piece. The test piece is placed in the center between the cylindrical electrodes of the same diameter of 250mm on the top and bottom, and the commercial frequency voltage of AC 60Hz is raised from 0 to 3000V/s as a short-time test method to measure the breakdown voltage when the specimen is destroyed. method was used.
또한, 열전도율은 제조된 단열보드를 가로 300mm×세로 300mm×두께 20mm로 절단하여 시험편을 준비한 다음, 시험편 양표면의 유효측정 영역 내에 1개소 이상의 온도측정 접점을 설치하고, 시험편 주위를 항온조를 이용하여 충분히 단열한 후, 시험편의 양면에 10℃ 이상의 온도차를 부여한다. 시험편 표면온도가 똑같은 방향에 변화가 없게 된후부터 시험편 온도차에 대하여 30분당 1% 이상 변화하지 않는 정상상태에 도달하면 측정을 종료하고, 수학식 2에 따라 열전도율을 산출하였다.In addition, the thermal conductivity is measured by cutting the manufactured insulation board into width 300mm × length 300mm × thickness 20mm to prepare a test piece, then install one or more temperature measuring contacts in the effective measurement area of both surfaces of the test piece, and use a thermostat around the test piece After sufficient insulation, a temperature difference of 10°C or more is applied to both surfaces of the test piece. After the surface temperature of the test piece did not change in the same direction, when it reached a steady state that did not change by more than 1% per 30 minutes with respect to the temperature difference of the test piece, the measurement was terminated, and the thermal conductivity was calculated according to Equation (2).
수학식 2
(여기에서, ι: 시험체의 두께(m), Rc: 시험체의 열저항(m2·h·℃/kcal)(m(here, ι: thickness of the specimen (m), Rc: thermal resistance of the specimen (m 2 h·°C/kcal) (m
2·K/W), θ1: 시험체 고온면의 온도(℃), θ2: 시험체 저온면의 온도(℃), q: 단위 면적당 열류량(kcal/m2·h)(W/m2), K1,K2: 열류계의 감도계수(kcal/m2·h)(W/m2·V), e1e2: 열류계의 출력(V))} 2 K/W), θ1: Temperature of the high-temperature side of the specimen (°C), θ2: Temperature of the low-temperature side of the specimen (°C), q: Heat flow per unit area (kcal/m 2 ·h) (W/m 2 ), K 1 ,K 2 : Sensitivity coefficient of heat flow meter (kcal/m 2 ·h) (W/m 2 ·V), e 1 e 2 : Heat flow meter output (V))}
<표 1><Table 1>
상기 표 1에 나타낸 것처럼, 본 발명의 실시예 1 내지 3을 통해 제조된 기계적 강도와 내열성능이 우수한 비석면 단열보드는 굴곡강도, 충격강도와 같은 기계적 물성이 우수할 뿐만 아니라, 절연파괴강도와 열전도율이 우수한 것을 알 수 있다.As shown in Table 1, the non-asbestos insulation boards prepared in Examples 1 to 3 of the present invention have excellent mechanical properties such as flexural strength and impact strength, as well as insulation breakdown strength and heat resistance. It can be seen that the thermal conductivity is excellent.
또한, 본 발명의 실시예 1을 통해 제조된 절연성과 단열성이 우수한 비석면 보드의 성분을 한국화학융합시험연구원에 의뢰하여 분석하였으며, 그 결과인 시험성적서를 아래 도 1 내지 2에 나타내었다.In addition, the components of the non-asbestos board having excellent insulation and thermal insulation properties prepared in Example 1 of the present invention were analyzed by the Korea Research Institute of Chemical Convergence Testing, and the results of the test reports are shown in FIGS. 1 and 2 below.
아래 도 1 내지 2에 나타낸 것처럼, 본 발명의 실시예 1을 통해 제조된 기계적 강도와 내열성능이 우수한 비석면 단열보드는 석면을 함유하고 있지 않은 것을 알 수 있다.As shown in FIGS. 1 and 2 below, it can be seen that the non-asbestos insulation board manufactured in Example 1 of the present invention has excellent mechanical strength and heat resistance, and does not contain asbestos.
따라서, 본 발명에 따른 기계적 강도와 내열성능이 우수한 비석면 단열보드 및 그 제조방법은 보강재로 광물섬유가 함유되어 원료의 쏠림현상 억제로 인해 기계적 물성이 향상될 뿐만 아니라, 고온 내열성능이 우수하며 충전재로 에어로겔 또는 글라스 버블이 함유되어 절연성 및 단열성이 우수한 비석면 단열보드를 제공한다.Therefore, the non-asbestos insulation board having excellent mechanical strength and heat resistance according to the present invention and its manufacturing method contain mineral fiber as a reinforcing material, so that mechanical properties are improved by suppressing the concentration of raw materials, and the high temperature heat resistance is excellent. To provide a non-asbestos insulation board that contains airgel or glass bubbles as a filler and has excellent insulation and heat insulation properties.
Claims (10)
상기 광물섬유가 함유된 보강재는 광물섬유 100 중량부에 아라미드섬유 및 탄소섬유로 이루어진 그룹에서 선택된 하나 이상을 1 내지 10 중량부 혼합하여 이루어지고,
상기 광물섬유는 광재면으로 이루어지며,
상기 충전재는 규회석 100 중량부, 에어로겔 30 내지 80 중량부, 실리카흄 30 내지 80 중량부 및 실리카분말 30 내지 80 중량부로 이루어지는 것을 특징으로 하는 기계적 강도와 내열성능이 우수한 비석면 단열보드.
100 parts by weight of a reinforcing material containing mineral fiber, 105 to 115 parts by weight of a binder, and 65 to 70 parts by weight of a filler,
The reinforcing material containing the mineral fiber is made by mixing 1 to 10 parts by weight of at least one selected from the group consisting of aramid fibers and carbon fibers in 100 parts by weight of mineral fibers,
The mineral fiber is made of mineral wool,
The filler is a non-asbestos insulation board with excellent mechanical strength and heat resistance, characterized in that it consists of 100 parts by weight of wollastonite, 30 to 80 parts by weight of airgel, 30 to 80 parts by weight of silica fume, and 30 to 80 parts by weight of silica powder.
상기 광물섬유가 함유된 보강재에는 유리섬유 및 세라믹으로 이루어진 그룹에서 선택된 하나 이상이 더 함유되는 것을 특징으로 하는 기계적 강도와 내열성능이 우수한 비석면 단열보드.
The method according to claim 1,
Non-asbestos insulation board with excellent mechanical strength and heat resistance, characterized in that the reinforcing material containing the mineral fiber further contains at least one selected from the group consisting of glass fibers and ceramics.
상기 결합재는 시멘트 및 점토로 이루어진 그룹에서 선택된 하나 이상으로 이루어지는 것을 특징으로 하는 기계적 강도와 내열성능이 우수한 비석면 단열보드.
The method according to claim 1,
The non-asbestos insulation board having excellent mechanical strength and heat resistance, characterized in that the binder is made of at least one selected from the group consisting of cement and clay.
상기 원료배합단계를 통해 배합된 배합물을 1000 내지 2000rpm의 속도로 2 내지 5분 동안 혼합하는 제1원료혼합단계;
상기 제1원료혼합단계를 통해 제조된 혼합물 100 중량부에 물 60 내지 100 중량부를 혼합하고 500 내지 1500rpm의 속도로 2 내지 5분 동안 혼합하는 제2원료혼합단계;
상기 제2원료혼합단계를 통해 제조된 혼합물을 180 내지 250kgf/cm2의 압력으로 압축성형하는 압축성형단계;
상기 압축성형단계를 통해 제조된 성형물을 70 내지 90%의 습도와 30 내지 60℃의 온도에서 24 내지 48시간 동안 양생하는 양생단계; 및
상기 양생단계를 통해 양생된 성형물을 연마하는 연마단계;로 이루어지며,
상기 광물섬유가 함유된 보강재는 광물섬유 100 중량부에 아라미드섬유 및 탄소섬유로 이루어진 그룹에서 선택된 하나 이상을 1 내지 10 중량부 혼합하여 이루어지고,
상기 광물섬유는 광재면으로 이루어지며,
상기 충전재는 규회석 100 중량부, 에어로겔 30 내지 80 중량부, 실리카흄 30 내지 80 중량부 및 실리카분말 30 내지 80 중량부로 이루어지는 것을 특징으로 하는 기계적 강도와 내열성능이 우수한 비석면 단열보드의 제조방법.A raw material mixing step of blending 100 parts by weight of a mineral fiber-containing reinforcing material, 105 to 115 parts by weight of a binder, and 65 to 70 parts by weight of a filler;
a first raw material mixing step of mixing the blend blended through the raw material blending step at a speed of 1000 to 2000 rpm for 2 to 5 minutes;
a second raw material mixing step of mixing 60 to 100 parts by weight of water with 100 parts by weight of the mixture prepared through the first raw material mixing step and mixing at a speed of 500 to 1500 rpm for 2 to 5 minutes;
a compression molding step of compression molding the mixture prepared through the second raw material mixing step at a pressure of 180 to 250 kgf/cm 2 ;
A curing step of curing the molded product produced through the compression molding step at a humidity of 70 to 90% and a temperature of 30 to 60° C. for 24 to 48 hours; and
A polishing step of polishing the molded product cured through the curing step; consists of,
The reinforcing material containing the mineral fiber is made by mixing 1 to 10 parts by weight of at least one selected from the group consisting of aramid fibers and carbon fibers in 100 parts by weight of mineral fibers,
The mineral fiber is made of mineral wool,
The filler comprises 100 parts by weight of wollastonite, 30 to 80 parts by weight of airgel, 30 to 80 parts by weight of silica fume, and 30 to 80 parts by weight of silica powder.
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