KR100363634B1 - Shielding materials for electromagnetic radiation using the expansional minerals - Google Patents
Shielding materials for electromagnetic radiation using the expansional minerals Download PDFInfo
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- KR100363634B1 KR100363634B1 KR10-1999-0060058A KR19990060058A KR100363634B1 KR 100363634 B1 KR100363634 B1 KR 100363634B1 KR 19990060058 A KR19990060058 A KR 19990060058A KR 100363634 B1 KR100363634 B1 KR 100363634B1
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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
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/16—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than 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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/52—Constituents or additives characterised by their shapes
- C04B2235/5208—Fibers
- C04B2235/5212—Organic
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Abstract
이 발명은 세피올라이트, 버미큘라이트, 펄라이트 및 제올라이트를 포함하는 전자파 차폐조성물에 관한 것이다. 전자파 차폐조성물은 인편상 세피오라이트 30중량%, 인편상 버미큘라이트 40중량%, 인편상 펄라이트 10중량%, 인편상 제올라이트 10중량%,저,말,갈포를 혼합한 장섬유 상태의 식물성 섬유질 10중량%로 조성된 팽창성 광물을 소재로한다.The present invention relates to an electromagnetic shielding composition comprising sepiolite, vermiculite, pearlite and zeolite. The electromagnetic shielding composition is composed of 30% by weight of flaky sepiolite, 40% by weight of flaky vermiculite, 10% by weight of flaky pearlite, 10% by weight of flaky zeolite, 10% by weight of long fiber of vegetable fiber mixed with low, horse and brown. Based on the formed expandable minerals.
본 발명에 의한 전자파 차폐조성물은 전자파를 차단하는 우수한 성능을 갖고 있다.The electromagnetic shielding composition according to the present invention has excellent performance of blocking electromagnetic waves.
Description
본 발명은 전자파 차폐재의 조성물에 관계되는 것으로서, 특히 팽창성 광물인 세피오라이트, 버미큘라이트, 펄라이트 및 제올라이트 분말을 팽창시킨 분말상 혼합물에 식물성 섬유와 요소 수지를 배합하여 성형한 전자파 차폐 조성물에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a composition of an electromagnetic wave shielding material, and more particularly, to an electromagnetic wave shielding composition formed by blending a vegetable fiber and urea resin in a powdered mixture of expanded minerals, such as sepiolite, vermiculite, pearlite and zeolite powder.
최근 전자파가 인체에 해를 끼친다는 이유 때문에 건축자재로 사용하는 단열재, 방음재에도 전자파 차폐성이 요구되고 있으며, 포장재에도 전자파 차폐성이 요구되고 있다. 특히, 방사성이 방출되는 방사성 폐기물의 저장소에는 방사능이 유출될 수 있으므로 전자파를 차단하는 전자파 차폐재로 시설할 필요성이 있다.Recently, electromagnetic wave shielding properties are required for heat insulating materials and soundproofing materials used as building materials, and electromagnetic wave shielding properties are also required for packaging materials because electromagnetic waves harm the human body. In particular, since radioactivity may be leaked to a reservoir of radioactive waste in which radioactivity is emitted, there is a need to install an electromagnetic shielding material that blocks electromagnetic waves.
펄라이트, 버미큘라이트, 카올린과 같은 광물질들은 가열하고 팽창시켜 건축자재용 경량 골재로 많이 이용되었다. 이러한 광물질들은 기공을 많이 함유하고 있어서 분말화하여 경량골재로 사용되었으나, 최근에는 전술한 광물질들은 팽창시키면 기공이 확대되면서 더 경량화 되므로 팽창시켜 사용하고 있다.버미큘라이트는 고온으로 가열하여 팽창시킨 후 장섬유 상태의 식물성 섬유질을 혼합하여 경량성 흡음재, 단열재, 방음재, 농원예용 자재 등의 경량 건축자재를 제조하고 있다. 그어나 버미큘라이트로 제조된 판재들은 방사능과 같은 전자파를 차단하는 능력은 없어서 방사능 차폐용으로는 사용할 수 없었다.본 발명자들은 버미큘라이트와 같은 팽창성 광물질을 팽창시켜서 건축자재로 사용하기 위하여 연구하는 과정에 버미큘라이트에 세피오라이트, 펄라이트, 제올라이트를 적당량 배합하여 성형하면 전자파는 물론이고 방사능까지 차단할 수 있음을 알게 되어 본 발명을 완성하게 되었다. 특히 고온, 특히 800-1200℃로 소성하여 팽창시키면, 인편상 분말이 얻어지는데 이러한 분말들은 많은 폐쇄 기공들을 갖고 있어서 경량골재로서 유용하게 사용되며 전자파의 차폐에 우수한 성능을 나타냄을 알게 되었다.본 발명에 의한 전자파 차폐조성물은 방사능 폐기물의 저장소에 사용하는 건축 판재로서 사용할 수 있을 뿐만 아니라 전자파 차폐재로 사용할 수 있다.본 발명에 사용되는 세피오라이트와 제올라이트는 방사능 차폐기능이 뛰어나고, 버미큘라이트와 펄라이트는 강도를 향상시켜 최종 제품이 전자파 차폐 성능을 나타내면서 우수한 강도를 갖게 한다. 특히 본 발명에 의하면 방사능 차폐기능이 뛰어난 전자파 차폐조성물이 얻어진다.본 발명에 사용되는 펄라이트의 성분은 표 1과 같으며, 주로 경량 건축자재의 제조에 사용되어 왔다.[표 1]펄라이트의 성분 분석표버미큘라이트는 건축자재로 사용되는 광물로서, 버미큘라이트 골드와 버미큘라이트 실버가 있으며, 그 성분은 표2 및 표3과 같다.[표 2]버미큘라이트 골드의 성분 분석표[표 3]버미큘라이트 실버의 성분 분석표 Minerals such as pearlite, vermiculite and kaolin have been widely used as lightweight aggregates for building materials by heating and expanding. Since these minerals contain a lot of pores, they are powdered and used as lightweight aggregates, but recently, the above-mentioned minerals are used to expand because the pores expand and become lighter. By mixing vegetable fiber in the state, lightweight building materials such as light-weight sound absorbing materials, heat insulating materials, soundproofing materials, and agricultural and gardening materials are manufactured. However, plates made of vermiculite do not have the ability to block electromagnetic waves such as radioactivity, so they cannot be used for radiological shielding. Sepiolite, pearlite, zeolite by mixing the appropriate amount of molding was found to be able to block not only electromagnetic waves but also radioactivity to complete the present invention. Particularly, when sintered by heating at high temperature, in particular at 800-1200 ° C., flaky powders are obtained. These powders have many closed pores, which are useful as lightweight aggregates and exhibit excellent performance in shielding electromagnetic waves. The electromagnetic wave shielding composition can be used not only as a building plate used for storage of radioactive waste but also as an electromagnetic wave shielding material. Sepiolite and zeolite used in the present invention have excellent radiation shielding function, and vermiculite and pearlite improve strength. The final product has good strength while exhibiting electromagnetic shielding performance. In particular, according to the present invention, an electromagnetic shielding composition having excellent radiation shielding function is obtained. The components of the pearlite used in the present invention are shown in Table 1, and have been mainly used for the manufacture of lightweight building materials. Analysis Vermiculite is a mineral used as a building material, and there are vermiculite gold and vermiculite silver, and its components are shown in Tables 2 and 3. [Table 2] Composition analysis table of vermiculite gold [Table 3] Component Analysis Table of Vermiculite Silver
본 발명의 목적은 방사능과 전자파를 차단하는 전자파 차폐조성물을 제공하는 것이다.전술한 본 발명의 목적은 세피오라이트, 버미큘라이트, 펄라이트 및 제올라이트를 함유하는 본 발명의 전자파 차폐조성물에 의하여 달성된다.It is an object of the present invention to provide an electromagnetic shielding composition which blocks radioactivity and electromagnetic waves. The object of the present invention described above is achieved by the electromagnetic shielding composition of the present invention containing sepiolite, vermiculite, pearlite and zeolite.
본 발명은 세피오라이트, 버미큘라이트, 펄라이트 및 제올라이트 분말을 팽창시킨 분말상 혼합물에 식물성 섬유를 배합하여 성형한 전자파 차폐재에 있어서,인편상 세피오라이트 30중량%, 인편상 버미큘라이트 40중량%, 인편상 펄라이트 10중량%, 인편상 제올라이트 10중량%,저,말,갈포를 혼합한 장섬유 상태의 식물성 섬유질 10중량%로 조성된 팽창성 광물을 소재로한 전자파 차폐조성물로 구성된다.The present invention relates to an electromagnetic shielding material formed by mixing vegetable fibers in a powdered mixture in which sepiolite, vermiculite, pearlite and zeolite powder are expanded, 30 wt% flaky seoliteite, 40 wt% flaky vermiculite, 10 wt% flaky pearlite, It consists of an electromagnetic shielding composition made of an expandable mineral made of 10% by weight of long fiber of vegetable fiber in the form of 10% by weight of flaky zeolite, low, horse, and brown.
본 발명에 의한 전자파 차폐재에는 강도를 향상시키기 위하여 플라이 애쉬를 전체 중량의 5중량% 정도 첨가할 수도 있다.In order to improve the strength, the electromagnetic shielding material according to the present invention may be added with about 5% by weight of the fly ash.
본 발명에 따르면, 세피오라이트, 버미큘라이트, 펄라이트 및 제올라이트를 전술한 비율로 배합하고 분쇄기를 이용하여 0.2-0.3mm의 입경을 갖도록 분쇄하여 사용하는바, 이러한 광물질은 800-1200℃로 급가열하면 10-20배의 크기로 팽창한다. 이와 같이 팽창된 광물질 분말들은 식물성 섬유와 요소수지를 배합하여 금형 내에 삽입하고 150-200℃로 가열하면서 가압 성형하면 식물성 섬유가 광물질 입자 사이에 끼어들면서 요소수지에 의하여 광물질 입자들 간의 접착력을 향상시켜 강도를 증진시키게 된다.According to the present invention, sepiolite, vermiculite, pearlite and zeolite are blended in the above-mentioned ratios and pulverized to have a particle diameter of 0.2-0.3 mm using a grinder, and these minerals are rapidly heated to 800-1200 ° C. It expands to 20 times the size. The expanded mineral powders are blended with vegetable fibers and urea resins, inserted into a mold, and press-molded while heating to 150-200 ° C. to improve the adhesion between the mineral particles by the urea resin as the vegetable fibers are interposed between the mineral particles. It will increase the strength.
특히 본 발명에 의하면 광물질들에 형성된 개방된 기공들의 표면이 요소주지에 의하여 차단되면서 서로 결합되게 되므로 성형품 내에 함유된 광물질들은 폐쇄된 기공을 갖는 형태로 되어 방음효과와 단열효과가 우수하게 나타난다. 특히 광물질 분말은 원적외선 방사 효능이 우수하여 원적외선을 방사하므로 실내의 장식용 판으로도 우수한 성능을 나타낸다.In particular, according to the present invention, since the surfaces of the open pores formed in the minerals are bonded to each other while blocked by the urea sheet, the minerals contained in the molded article have closed pores, so that the soundproofing and insulating effect is excellent. In particular, since the mineral powder emits far infrared rays with excellent far-infrared radiation efficacy, it shows excellent performance as a decorative plate indoors.
본 발명에 사용할 수 있는 식물성 섬유로는 마섬유, 저섬유, 갈포섬유들이 있다.Vegetable fibers that can be used in the present invention include hemp fibers, low fibers, brown hair fibers.
본 발명에 의하면, 방사능 차단효과가 우수한 건축 자재가 얻어지는바, 이러한 전자파 차폐조성물은 경량이고 강도가 우수하여 방사성 폐기물 처리장을 건축할 때 사용될 뿐만 아니라 건축용 단열재, 방음재, 전기절연용 포장재로 유용하게 이용된다.[실시예]이하 본 발명을 실시예에 의하여 상세하게 설명한다.실시예 1(제 1공정)세피오라이트, 버미큘라이트, 펄라이트, 제올라이트를 각각 0.2mm-3mm로 분쇄하고 유기과산화물의 혼탁액에 침지하여 900℃에서 급가열하여 20배로 팽창시킨 인편상 분말을 얻는다.(제 2공정)제1공정에서 얻어진 4가지 광물의 인편상 중량비로 세피오라이트 30중량%, 버미큘라이트 40중량%, 펄라이트10중량% 및 제올라이트 10중량%와, 저,마,갈포 3가지를 혼합한 식물성 장섬유 접착재 10중량%에 플라이 애쉬를 적정량 잘 혼합하여 100%를 투여한다.(제 3공정)제 2공정에서 얻어진 혼합물질을 열판 몰드에 넣고 200℃에서 서서히 가열하여 약 500kg/cm2의 롤러 압력으로 압축시켜 성형된 무기질 접착재 전자파 차폐재를 소재로한 공업용재를 얻는다.According to the present invention, a building material having excellent radiation shielding effect is obtained. The electromagnetic shielding composition is light and has high strength, and is not only used when building a radioactive waste treatment plant, but also usefully used as a building insulation, soundproofing material, and electrical insulation packaging material. EXAMPLES Hereinafter, an Example demonstrates this invention in detail. Example 1 (First step) Sepiolite, vermiculite, pearlite, and zeolite were each ground to 0.2 mm-3 mm, immersed in a turbid liquid of organic peroxide, and rapidly heated at 900 ° C. to obtain a flake powder expanded 20 times. Step 2) Vegetable long fiber of 30% by weight of sepiolite, 40% by weight of vermiculite, 10% by weight of zeolite and 10% by weight of zeolite, and three kinds of low, hemp and red pepper, in the flake weight ratio of the four minerals obtained in the first step. The fly ash is properly mixed with 10% by weight of the adhesive, and 100% is administered. (Step 3) The mixture obtained in Step 2 is placed in a hot plate mold and gradually heated at 200 ° C. to a roller pressure of about 500 kg / cm 2 . The industrial material which is made of the inorganic adhesive material electromagnetic wave shielding material shape | molded by compression is obtained.
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| KR20000015331A (en) * | 1998-08-28 | 2000-03-15 | 한정숙 | Matt containing elvan and manufacturing method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030054113A (en) * | 2001-12-24 | 2003-07-02 | 이명희 | A manufacturing method for expansive miner material in fire door |
| KR100452768B1 (en) * | 2001-12-24 | 2004-10-14 | 이승천 | A manufacturing method for expansive miner material of superiority adiabatic and absorptivity in fire material |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20000017838A (en) | 2000-04-06 |
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