KR20130034281A - A manufacturing method of heart insulating material foamed glass using boiling method, and therfor heart insulating material foamed glass - Google Patents
A manufacturing method of heart insulating material foamed glass using boiling method, and therfor heart insulating material foamed glass Download PDFInfo
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- KR20130034281A KR20130034281A KR1020110098207A KR20110098207A KR20130034281A KR 20130034281 A KR20130034281 A KR 20130034281A KR 1020110098207 A KR1020110098207 A KR 1020110098207A KR 20110098207 A KR20110098207 A KR 20110098207A KR 20130034281 A KR20130034281 A KR 20130034281A
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- 239000011521 glass Substances 0.000 title claims abstract description 61
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 27
- 238000009835 boiling Methods 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title abstract description 25
- 239000011810 insulating material Substances 0.000 title abstract description 14
- 239000000843 powder Substances 0.000 claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000011494 foam glass Substances 0.000 claims abstract description 12
- 239000007788 liquid Substances 0.000 claims abstract description 10
- 238000002156 mixing Methods 0.000 claims abstract description 10
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000004115 Sodium Silicate Substances 0.000 claims abstract description 9
- 239000000203 mixture Substances 0.000 claims abstract description 9
- 229910052911 sodium silicate Inorganic materials 0.000 claims abstract description 9
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 5
- 238000001035 drying Methods 0.000 claims abstract description 5
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 5
- 239000010703 silicon Substances 0.000 claims abstract description 5
- 238000009413 insulation Methods 0.000 claims description 34
- 239000002518 antifoaming agent Substances 0.000 claims description 7
- 229920001296 polysiloxane Polymers 0.000 claims 1
- 239000004088 foaming agent Substances 0.000 abstract 2
- 238000005187 foaming Methods 0.000 description 10
- 239000012774 insulation material Substances 0.000 description 10
- 229910010272 inorganic material Inorganic materials 0.000 description 7
- 239000011147 inorganic material Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 239000006260 foam Substances 0.000 description 6
- 239000002699 waste material Substances 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 239000003431 cross linking reagent Substances 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 229920006328 Styrofoam Polymers 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000006060 molten glass Substances 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
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- 230000004936 stimulating effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000008261 styrofoam Substances 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B19/00—Other methods of shaping glass
- C03B19/08—Other methods of shaping glass by foaming
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B19/00—Other methods of shaping glass
- C03B19/09—Other methods of shaping glass by fusing powdered glass in a shaping mould
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C11/00—Multi-cellular glass ; Porous or hollow glass or glass particles
- C03C11/007—Foam glass, e.g. obtained by incorporating a blowing agent and heating
-
- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Glass Compositions (AREA)
Abstract
Description
본 발명은 발포유리 단열재 제조방법 및 그 발포유리 단열재에 관한 것으로, 특히 마이크로파와 보일링 공법을 이용하여 단열성능이 우수하면서도 그 제조비용을 획기적으로 절감한 발포유리 단열재 제조방법 및 그 발포유리단열재에 관한 것이다.The present invention relates to a foamed glass insulation material manufacturing method and the foamed glass insulation material, and in particular to the foamed glass insulation material manufacturing method and the foamed glass heat insulating material excellent in insulation performance using the microwave and the boiling method method and significantly reduced the manufacturing cost. It is about.
폐유리나 일반유리의 가루를 활용하여 단열소재를 제조하는 방법은 유리가루를 발포하여 다공성 실리카 소재로 만들어 단열성을 갖도록 하는 것이다. 그러나 유리가루 자체로는 발포가 어렵기 때문에 녹으면서 그 부피가 급격히 확장되는 타 소재와 혼합하여 발포하는 방법을 적용하여 발포유리를 만들어 단열재로 제품화하는 공법을 활용하여 왔다. The method of manufacturing the insulation material using the powder of waste glass or common glass is to make the porous silica material by foaming glass powder to have insulation. However, since glass powder itself is difficult to foam, it has been utilized to make foamed glass and commercialize it as a heat insulating material by applying a method of foaming by mixing with other materials that melt and rapidly expand its volume.
현재까지 제품화되어 판매되고 있는 기존의 제품들은 유리가루에 탄소를 섞어 이를 용융시킨 다음 발포시키는 방법으로 생산된 제품들이다.Existing products that have been commercialized and sold to date are products produced by mixing carbon in glass powder, melting it, and then foaming it.
따라서 유리가 용융되기 시작하는 온도까지 가열하는데 들어가는 에너지 비용, 그에 필요한 가열장치 등 많은 투자와 비용이 소요되어 생산단가가 매우 고가여서 특수한 용도에만 활용 및 적용되어 왔으며 이러한 이유로 대중적으로 폭넓게 사용되지 못해 관련 발포유리 단열재의 시장이 확대되지 못한 상태였다. Therefore, many investments and costs such as the energy cost of heating up to the temperature at which the glass starts to melt and the heating device required are very expensive. Therefore, the production cost is very expensive and it has been used and applied only for special purposes. The market for foam glass insulation has not expanded.
그러나 점차로 요구되는 친환경 제품의 사용 및 교토의정서의 본격적인 시행에 따른 상황변화에 따라 대중적으로 활용되어 왔던 유기 단열소재, 일례로 스티로폼, 발포성 폴리우레탄 등이 친환경적이지 못하기 때문에 그 제조 및 사용이 금지되고 친환경적인 무기소재로 제조된 단열소재의 필요성이 급격히 대두되었다. 단열소재는 흔히 건축용 자재로 가장 많이 활용되어 왔으며 냉장고 등의 벽체 단열소재로도 매우 많이 활용되고 있는 소재이며 현재도 유기 소재로 제조된 단열재가 많이 활용되고 있으나 땅속에서 수백년 이상 분해되지 않고 환경을 오염시키는 등 앞에서 언급한 이유로 인하여 무기 소재로 제조된 단열재의 개발이 시급한 과제로 대두되었으며, 특히 저렴하게 제조된 무기소재 단열재의 개발 필요성이 요구되고 있다. However, the production and use of organic insulating materials, such as styrofoam and foamed polyurethane, which have been widely used in accordance with the increasingly demanded use of eco-friendly products and the full-fledged implementation of the Kyoto Protocol, are prohibited. The need for thermal insulation materials made of environmentally friendly inorganic materials has risen rapidly. Insulation materials have been used most often as building materials, and they are also widely used as wall insulation materials such as refrigerators. Insulation materials made of organic materials are still used, but they do not decompose in the ground for hundreds of years and pollute the environment. Due to the aforementioned reasons, the development of an insulation made of an inorganic material has emerged as an urgent problem, and in particular, the need for the development of an inorganic material made of an inexpensive material is required.
이러한 관점에서 볼 때 기존의 유기 단열재를 대체할 수 있는 무기 단열소재 중 발포유리 단열재가 가장 근접되어 있는 대안으로 연구되고 있으나 기존 용융 공법에 의한 방식으로 생산되는 발포유리 단열제품은 가격이 매우 고가인 점이 수요처인 산업현장에서의 경제적 활용과 이용에 큰 걸림돌이 되어왔다. From this point of view, among the inorganic insulating materials that can replace the existing organic insulating materials, the foam glass insulating material is being researched as the closest alternative, but the foamed glass insulating product produced by the conventional melting method is very expensive. It has been a major obstacle to economic utilization and utilization in industrial sites where demand is a demand.
기존의 용융식 유리 발포는 유리가루에 Carbon을 혼합하여 용융시키면, Carbon에 의해 거품이 발생하여 부피가 늘어나는 성질을 이용해 발포시키는 공법으로서, 최소한 섭씨 600도 이상의 고온 공정이 요구되므로 많은 에너지가 소요되어 가격이 비쌀 수밖에 없었다.Conventional molten glass foam is a method of foaming by mixing carbon into glass powder and foaming by carbon to increase the volume, which requires a high temperature process of at least 600 degrees Celsius, which requires a lot of energy. The price was inevitable.
또한 기존 용융발포는 용융상태에서 급냉시켜야만 기포에 의한 부피가 줄어들지 않고 고형화 될 수 있어서 막대한 시설비용이 소요되었다. In addition, the existing molten foam has to be quenched in the molten state can be solidified without reducing the volume caused by the bubble was required a huge facility cost.
전술한 문제점들을 해결하기 위한 본 발명의 목적은, 발포유리 단열재를 보다 간편하고 저렴하게 생산할 수 있는 공법을 적용하여 제품의 생산에 소요되는 비용과 생산단가를 크게 낮춤으로써, 친환경성인 무기소재의 현장 적용 및 활용성을 높임과 동시에 유기 단열재의 사용을 대체시킴으로써 환경오염을 줄이고자 하는, 보일링(boiling) 공법을 이용한 발포유리 단열재 제조방법을 제공함에 있다.An object of the present invention for solving the above problems, by applying a method for producing a foamed glass insulation more easily and inexpensively, by greatly reducing the cost and production cost of the product, the site of environmentally friendly inorganic materials In order to reduce the environmental pollution by replacing the use of the organic insulating material at the same time to improve the application and usability, to provide a method of manufacturing foam glass insulation using a boiling method (boiling).
전술한 문제점들을 해결하기 위한 본 발명의 다른 목적은, 전술의 목적에 따른 발포유리 단열재 제조방법을 통해 성능이 우수하면서도 경제성이 획기적으로 개선된 발포유리 단열재를 제공함에 있다. Another object of the present invention for solving the above-mentioned problems is to provide a foamed glass insulation with excellent performance and significantly improved economic performance through the foamed glass insulation manufacturing method according to the above object.
전술의 목적을 달성하기 위한 본 발명의 발포유리 단열재 제조방법은, 발포유리 단열재 제조방법에 있어서, 60~100㎛의 유리가루를 준비하는 단계; 상기 유리가루와, 소정 비율의 물과, 10~30Volume%의 액상규산나트륨과, 0.1Volume% 이내의 실리콘계열의 소포제를 혼합하는 단계; 및 상기 혼합물을 밀폐용기에 담고 마이크로파를 주사하여 소정 시간 끓인(boiling) 후에 발포된 유리를 건조시키는 단계를 포함한다.Foamed glass insulation manufacturing method of the present invention for achieving the above object, in the foamed glass insulation manufacturing method, preparing a glass powder of 60 ~ 100㎛; Mixing the glass powder, water in a predetermined ratio, 10-30 vol% of liquid sodium silicate, and a silicon-based antifoaming agent of 0.1 vol% or less; And placing the mixture in an airtight container and injecting microwaves to dry the foamed glass after boiling for a predetermined time.
전술의 다른 목적을 달성하기 위한 본 발명의 발포유리 단열재는, 60~100㎛의 유리가루와 소정 비율의 물과 10~30Volume%의 액상규산나트륨과 0.1Volume% 이내의 실리콘계열의 소포제를 혼합하고, 그 혼합물을 밀폐용기에 담고 마이크로파를 주사하여 소정 시간 끓인(boiling) 후에 발포된 유리를 건조시켜 제조된 발포유리 단열재인 것을 특징으로 한다.The foamed glass insulation of the present invention for achieving the above-mentioned other objects, the glass powder of 60 ~ 100㎛, water and a predetermined ratio of 10-30 volume% liquid sodium silicate and a silicon-based antifoaming agent of less than 0.1Volume And, the mixture is put into a sealed container, it is characterized in that the foam glass insulation prepared by drying the foamed glass after boiling (boiling) by a microwave for a predetermined time.
본 발명의 보일링 공법을 이용한 발포유리 단열재 제조방법 및 그에 따른 발포유리 단열재는, 기존 대비 매우 낮은 온도에서 간단한 제조공법을 통하여 성능이 매우 우수하면서도 제조비용이 획기적으로 절감되는 발포유리 단열재를 제조하는 효과를 제공한다. Foamed glass insulation manufacturing method using the boiling method of the present invention and the foamed glass insulation according to the above, to produce a foamed glass insulation which is very excellent in performance and significantly reduced manufacturing cost through a simple manufacturing method at a very low temperature than conventional Provide effect.
도 1은 본 발명에 따른 보일링 공법을 이용한 발포유리 단열재 제조방법에 따라 제조된 발포유리 단열재의 시제품 사진(각각의 비닐봉지 안이 다양한 조건에서 제조된 발포유리 단열재 시제품)이다.1 is a prototype photograph of a foamed glass insulation prepared according to the foamed glass insulation manufacturing method using the boiling method according to the present invention (each plastic bag is a foamed glass insulation produced in a variety of conditions).
본 발명자에 의해 각고의 실험과 노력 끝에 얻어진 본 발명의 보일링(boiling) 방식의 발포유리 제조방법은, 유리가루와 물을 혼합한 다음 섭씨 100도에서 물이 끓는 현상을 이용해 부피를 확대시킨 다음 계속 열을 가하면 별도의 냉각장치 없이도 물유리에 포함되어있는 물이 기화되면서 자연적으로 건조되며 끓는 상태에서 고형화됨으로써 공정이 매우 단순화되었다. The method of manufacturing the boiling glass foam of the present invention obtained by the present inventors after the endless experiments and efforts is performed by mixing glass powder and water, and then expanding the volume by boiling water at 100 degrees Celsius. Continued heating greatly simplifies the process by evaporating the water contained in the water glass without the need for a separate cooler, naturally drying and solidifying in boiling.
또한 열을 가하는 방식도 외부 Heating 방식이 아닌 최소 1.5Kw 이상의 출력을 가진 주파수 2,450MHz 내외의 마이크로파를 이용하여 물분자에 자극을 가해 열을 발생시킴으로써, 유리발포의 요구수준 온도에 도달하는 시간을 대폭 단축시켜 수십초 내지 수분 이내에 발포공정이 완료될 수 있도록 하였다. 이러한 공법은 전체적으로 고르게 Boiling현상이 발생하여 발포가 고르게 이루어지며, 에너지 비용도 최소화한다는 장점이 있다. In addition, the method of applying heat also generates heat by stimulating water molecules using microwaves with a frequency of around 2,450 MHz with an output of at least 1.5Kw, rather than an external heating method, thereby significantly reaching the required temperature of glass foam. It was shortened to allow the foaming process to be completed within a few tens of seconds. This process has the advantage that the foaming is evenly made by evenly boiling phenomenon as a whole, minimizing the energy cost.
그러나 이러한 공정으로만 만들어진 발포유리 단열재는 친수성을 갖게 되어 단열재의 표면이 공기와 접촉하거나 지표 또는 물과 접촉하는 경우 수분이 흡수되어 서서히 그 망목구조가 붕괴되어 전체적으로 부서지거나 금이 가고 동시에 단열 특성이 저하되는 단점이 있으며, 또한 전체적으로 유리 입자들 간의 결합력이 약해 압축 및 인장 강도가 매우 약하기 때문에 그 개발에 어려움을 겪어왔다. 이는 무기 소재의 기본특성으로서 입자들 간의 접착력 및 결합력이 약해 단열소재로서 요구되는 최소한의 강도를 발현시키지 못하고 또한 친수성의 성격을 가진다는 것이다. However, the foamed glass insulation made only by this process has hydrophilicity, and when the surface of the insulation comes into contact with air or with the surface or water, water is absorbed and the network structure is gradually collapsed, thereby breaking or cracking as a whole. There are disadvantages of deterioration, and also, since the bonding strength between the glass particles as a whole is very weak compression and tensile strength has been difficult to develop. This is a basic property of the inorganic material is that the adhesion and bonding strength between the particles is weak, does not express the minimum strength required as a heat insulating material and also has a hydrophilic character.
따라서 이러한 소재의 특성에 기인한 문제점을 더 해결하기 위해, 본 발명에서는 가교제를 사용하였다. 본 발명에 사용된 가교제는 무기소재인 액상규산나트륨을 사용하였다. 액상 규산나트륨은 유리의 접착에 사용되는 무기소재 용액으로서 물과 유리가루 혼합 슬러지(바람직하게는, 일실시예로 물 20 Volume%)에 가교제 액상나느트륨 10~30 Volume% 정도를 섞어 사용한다. 이렇게 제조된 혼합 슬러지를 그대로 마이크로파로 가열하면 혼합용액이 끓어오르며 부피가 팽창하는 것을 볼 수 있다. Therefore, in order to further solve the problems caused by the properties of these materials, a crosslinking agent was used in the present invention. The crosslinking agent used in the present invention used liquid sodium silicate which is an inorganic material. Liquid sodium silicate is an inorganic material solution used for the adhesion of glass and is mixed with water and glass powder mixed sludge (preferably, 20 vol% water in one embodiment) of crosslinking agent liquid sodium 10-30 vol%. When the mixed sludge thus prepared is heated with microwaves, it can be seen that the mixed solution boils and the volume expands.
그러나 이렇게 만들어진 발포 유리는 강도는 발현되나 친수성을 가지고 있어 장기적인 활용에 문제가 있으며 또한 단열재 내부에 존재하는 기포의 크기와 분포가 일정치 않아 균일한 단열성능을 발휘하는 발포유리 단열재를 양산하는데 문제점이 있다. 또한 기포의 크기를 가능한 한 작게 유지하고 소재 내부에 무수히 많이 분포하도록 제어하여야만 단열특성이 효과적으로 발현되면서 전체적인 강도가 유지될 수 있다. 즉, 발포유리의 비표면적을 최대한 크게 유지할 수 있도록 제조하는 방법이 필요하였다. However, the foamed glass thus made has strength, but it has hydrophilicity, which causes problems in the long-term use. Also, since the size and distribution of bubbles existing in the insulation are not constant, there is a problem in producing foam insulation that exhibits uniform insulation performance. have. In addition, the size of the bubble should be kept as small as possible and controlled to be distributed innumerably in the material, so that the overall strength can be maintained while the heat insulation property is effectively expressed. In other words, a method for producing the foamed glass so as to maintain the specific surface area as large as possible was needed.
상기 문제를 더 해결하기 위해 본 발명에서는, 추가적으로 소포제를 더 적용하였다. 소포제는 거품을 없애주는 성질을 가진 소재로서 거품이 많이 발생되어야 발포가 잘 되어 부피가 팽창하는 발포유리의 제조 특성에 정반대 특성인 발포를 억제하는 특성을 가지는 소재이지만 극소량-전체 혼합용액의 0.1Volume% 이내를 적용하면 급격하게 끓는 현상을 억제시키고 기포의 크기를 줄여주어 전체적으로 크기가 줄어든 기포가 소재 내부에 바닥면서부터 소재 윗부분에까지 고르게 분포하는 양호한 특성을 나타내었다. 또한 기포의 크기가 미세하게 유지되도록 함으로써, 자연스럽게 소수성을 갖는 발포유리 단열재가 만들어질 수 있었으며, 미세한 기공이 다량으로 고르게 분포하면서 최소 3배 이상으로 부피가 팽창되어 우수한 단열 특성을 발휘할 수 있었다. In order to further solve the above problem, in the present invention, an antifoaming agent was further applied. Antifoaming agent is a material that has the property of removing bubbles. It has the property of suppressing foaming, which is the opposite of the manufacturing characteristics of foamed glass, which expands well due to the high foaming volume. When applied within%, it suppressed a sudden boiling phenomenon and reduced the size of the bubble, so that the overall reduced size of the bubble evenly distributed from the bottom to the top of the material. In addition, by maintaining the size of the bubbles to be fine, it is possible to make a foam glass insulation having a natural hydrophobicity, it was possible to exert excellent thermal insulation properties by expanding the volume to at least three times as evenly distributed fine pores in a large amount.
이하, 본 발명에 따른 보일링 공법을 이용한 발포유리 단열재 제조방법의 바람직한 일실시예를 살펴보면 다음과 같다.Hereinafter, looking at a preferred embodiment of the foam glass insulation manufacturing method using the boiling method according to the present invention.
우선, 1단계로 유리가루(출발원료)를 제조한다. 자원재활용 및 비용절감을 위해 폐유리를 사용하는 경우, 수집된 폐유리를 Ball Mill 또는 Crusher에서 파쇄하여 60~100㎛의 유리가루를 회수한다.First, glass powder (starting material) is prepared in one step. When waste glass is used for resource recycling and cost reduction, the collected waste glass is crushed in a ball mill or crusher to recover 60 ~ 100㎛ glass powder.
2단계는 혼합공정(교반공정)으로서, 유리가루 및 물(바람직하게는 20 Volume%) 혼합하고, 가교제인 액상규산나트륨 혼합(10~30 Volume%)하고, 실리카계열의 소포제를 (0.1 Volume% 이내) 첨가하여 혼합한다The second stage is a mixing process (stirring process), mixing glass powder and water (preferably 20 volume%), mixing liquid sodium silicate as a crosslinking agent (10-30 volume%), and adding a silica-based antifoaming agent (0.1 Volume%). Within) add and mix
3단계는 발포공정으로서, 상기 혼합물을 밀폐용기(챔버)에 담고, 최소 1.5Kw 이상의 출력을 가진 주파수 2,450MHz의 마이크로파를 주사하여 물분자에 자극을 가해 열을 발생시킴으로써, 유리가루 혼합물을 발포시키고, 일정시간 건조시켜 본 발명에 따른 도 1에 보여진 발포유리 단열재를 얻는다.The third step is a foaming process, in which the mixture is placed in an airtight container (chamber), and a glass powder mixture is foamed by injecting microwaves with a frequency of 2,450 MHz with an output of at least 1.5 Kw to stimulate water molecules to generate heat. After drying for a certain time, the foamed glass insulation shown in FIG. 1 according to the present invention is obtained.
추가적으로, 4단계는 단열재 제품화 공정으로서, 3단계에서 얻어진 발포유리 단열재를 소정 규격에 맞게 절단하여 포장함으로써, 산업현장에 곧바로 이용될 수 있는 규격화된 발포유리 단열재가 완성된다.In addition, step 4 is a thermal insulation material production process, by cutting and packaging the foam glass insulation obtained in step 3 to a predetermined standard, the standardized foam glass insulation that can be used immediately in the industrial field is completed.
이로써, 본 발명에 따른 보일링공법에 의해 제조된 발포유리 단열재는 기존 용융법에 의한 단열재보다 최소 60% 이상 생산비용이 절감되어 저렴한 가격에 친환경적인 무기단열소재를 공급할 수 있으며, 특히 폐기물과 같은 폐유리를 초기 출발 원료로 사용하기 때문에 원자재 비용도 대폭 절감되고 동시에 폐기물도 처리되는 일석이조의 효과를 더 거둘 수 있다. As a result, the foamed glass insulation manufactured by the boiling method according to the present invention can reduce the production cost by at least 60% more than the insulation by the conventional melting method, and can supply environmentally friendly inorganic insulation materials at low prices, especially waste materials. The use of waste glass as an initial starting material significantly reduces raw material costs and at the same time has the added benefit of eliminating waste.
한편, 전술한 바와 같이 본 발명에 따른 기술적 사상 및 바람직한 실시예를 잘 이해한 이 기술분야의 당업자에게는 본 발명의 기술적 권리범위 내에서 다양한 변형 실시예가 가능함은 자명하게 이해될 것이다.On the other hand, it will be apparent to those skilled in the art that the technical spirit and preferred embodiments according to the present invention as described above, various modifications are possible within the technical scope of the present invention.
Claims (2)
60~100㎛의 유리가루를 준비하는 단계;
상기 유리가루와, 소정 비율의 물과, 10~30Volume%의 액상규산나트륨과, 0.1Volume% 이내의 실리콘계열의 소포제를 혼합하는 단계; 및
상기 혼합물을 밀폐용기에 담고 마이크로파를 주사하여 소정 시간 끓인(boiling) 후에 발포된 유리를 건조시키는 단계를 포함하는, 발포유리 단열재 제조방법.In the foam glass insulation manufacturing method,
Preparing a glass powder of 60 ~ 100㎛;
Mixing the glass powder, water in a predetermined ratio, 10-30 vol% of liquid sodium silicate, and a silicon-based antifoaming agent of 0.1 vol% or less; And
And placing the mixture in an airtight container and injecting microwaves to boil the glass for a predetermined time to dry the foamed glass.
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| KR20010061337A (en) | 1999-12-28 | 2001-07-07 | 이철태 | Method for manufacturing lightweight heat insulating forming glass by direct forming |
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