JPH039598A - Electromagnetic wave absorbing board - Google Patents
Electromagnetic wave absorbing boardInfo
- Publication number
- JPH039598A JPH039598A JP1144430A JP14443089A JPH039598A JP H039598 A JPH039598 A JP H039598A JP 1144430 A JP1144430 A JP 1144430A JP 14443089 A JP14443089 A JP 14443089A JP H039598 A JPH039598 A JP H039598A
- Authority
- JP
- Japan
- Prior art keywords
- electromagnetic wave
- wave absorbing
- board
- ceramic powder
- cement mortar
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000203 mixture Substances 0.000 claims abstract description 8
- 239000000919 ceramic Substances 0.000 claims abstract description 6
- 239000000843 powder Substances 0.000 claims abstract description 6
- 235000013311 vegetables Nutrition 0.000 claims abstract description 6
- 239000011083 cement mortar Substances 0.000 claims abstract description 5
- 239000004927 clay Substances 0.000 claims abstract description 4
- 239000012634 fragment Substances 0.000 claims description 4
- 238000010304 firing Methods 0.000 claims description 2
- 238000010521 absorption reaction Methods 0.000 abstract description 5
- 239000011358 absorbing material Substances 0.000 abstract description 2
- 239000002245 particle Substances 0.000 abstract 2
- 241000209094 Oryza Species 0.000 description 3
- 235000007164 Oryza sativa Nutrition 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 3
- 235000009566 rice Nutrition 0.000 description 3
- 239000004566 building material Substances 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 239000010903 husk Substances 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 239000004568 cement Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
Landscapes
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
この発明はＶＨＦやＵ ＨＦ帯等の電磁波の吸収性が優
れ、妨害電波の遮断を目的に建物外壁等に用い、有効な
電磁波吸収パネルに関する。[Detailed Description of the Invention] [Field of Industrial Application] This invention relates to an effective electromagnetic wave absorbing panel that has excellent absorption properties for electromagnetic waves such as VHF and UHF bands and is used on the outer walls of buildings for the purpose of blocking radio interference. .
近年、コンピューターの発展に伴い、コンピューター相
互間による電波障害や、ロボットやコンピューターが外
部からの妨害電磁波によってシステムが破壊され、正常
な作動が行われなくなる場合が少なからず発生している
。In recent years, with the development of computers, there have been many cases in which the systems of robots and computers are destroyed and no longer function properly due to radio interference between computers or interference from external electromagnetic waves.
従って、外部からの妨害電波を吸収あるいは反射分散さ
せて遮断する機能をもつ板体で、周囲を囲み、内部のコ
ンピューター等の装置を保護する必要性が高まっている
。Therefore, there is an increasing need to protect internal devices such as computers by surrounding them with a plate that has the function of absorbing or reflecting and dispersing and blocking interference waves from the outside.
電磁波吸収ボードに求められる条件としては、外部から
の妨害電波を吸収あるいは反射分散せしめて遮断すると
ともに、軽量、強靭であって細露を生じないことが必要
とされる。しかしながら、この様な条件を満足するボー
ドは得られていない。The requirements for an electromagnetic wave absorbing board include that it absorbs or reflects and disperses and blocks interference waves from the outside, and that it is lightweight, strong, and does not produce dew. However, no board has been obtained that satisfies these conditions.
この発明は上記、事情に鑑みなされたものである。その
目的は、電磁波の遮断性能が優れ、かつ強度、軽量性、
および防露性を備え、しかも鋸引き、釘止め性等の加工
性があり、建材としても高い実学性をもった電磁波吸収
ボートを提供するにある。This invention was made in view of the above circumstances. The purpose is to have excellent electromagnetic wave blocking performance, strength, lightness,
It is an object of the present invention to provide an electromagnetic wave absorbing boat which has a dew-proof property, has workability such as sawing and nailing properties, and has high practicality as a building material.
（課題を解決するための手段〕
この電磁波吸収ボードは、セメントモルタルに粘土を焼
成してなったセラミック粉粒体および植物質細片を混合
してなった組成物の硬化体からなることを特徴とする特
二の発明で用いる植物質細片としては籾殻、あるいはお
が屑等である。セメントモルタルにたいするセラミック
粉粒体の混合割合は容積比４０％〜１００％、植物質細
片の混合割合は容積比１００％〜２００％の範囲が好適
であり、使用の形態、要求性能等に応し適宜決定される
。(Means for Solving the Problems) This electromagnetic wave absorbing board is characterized by being made of a hardened composition made by mixing cement mortar with ceramic powder made by firing clay and vegetable fragments. The vegetable fragments used in the second invention are rice husks, sawdust, etc.The mixing ratio of the ceramic powder to the cement mortar is 40% to 100% by volume, and the mixing ratio of the vegetable fragments is 40% to 100% by volume. The ratio is preferably in the range of 100% to 200%, and is determined as appropriate depending on the form of use, required performance, etc.
下記組成物から、第１．２．３図に示す電磁波吸収ボー
ドをつくった。An electromagnetic wave absorbing board shown in Figure 1.2.3 was made from the following composition.
モルタル組成物の組成
重量（ｋｇ） 容積比
セメント ３２９
水 ２３０
砂 ５７４
（モルタル １１３３ １００％）籾殻
５６ 約１５０％セラミック粉粒体
１６５ 約 ５０％（比重０．５〜０．６）
第１．２．３図はそれぞれ平板形、円弧形、波板形の電
磁波吸収ボード１であり、金′ｆＩ４２を埋設し補強し
てあり、両側端面に口達い３が形成されている。Composition weight of mortar composition (kg) Volume ratio Cement 329 Water 230 Sand 574 (Mortar 1133 100%) Rice husk
56 Approximately 150% ceramic powder
165 Approximately 50% (specific gravity 0.5 to 0.6) Figure 1.2.3 shows electromagnetic wave absorbing boards 1 in the form of a flat plate, an arc, and a corrugated plate, respectively, which are reinforced by embedding gold'fI42. There are openings 3 formed on both end faces.
このパネルはいずれも、従来考えられてきたパネルに比
べ、電磁波の反射は２〜５倍、吸収は１０〜１８０倍と
著しく大であり、高い電磁波遮断性能を全厚し、厚さ２
〜５Ｃ１１１のこのパネルは電磁波吸収材として高い実
用性があることが判った。Both of these panels have significantly greater electromagnetic wave reflection, 2 to 5 times greater electromagnetic wave absorption, and 10 to 180 times greater electromagnetic wave absorption than conventional panels.
It was found that this panel of ~5C111 has high practicality as an electromagnetic wave absorbing material.
また、籾くずの混入により軽量性、耐結露性が付与され
、金網の埋設により高い強度を保っている。In addition, the inclusion of rice scraps makes it lightweight and resistant to dew condensation, and the embedded wire mesh maintains high strength.
この発明は以上の通りであり、この電磁波吸収パネルは
妨害となる電磁波を遮断し、コンピューターやロボット
等の電子機器を電波から保護することができる。同時の
このパネルは軽量性、耐結露性等の建材としての実用性
を備えている。また、モルタル状組成物から望造される
ので、様々な形状パネルを自由に形成することができる
。The present invention is as described above, and this electromagnetic wave absorbing panel can block interfering electromagnetic waves and protect electronic devices such as computers and robots from radio waves. At the same time, this panel has practical properties as a building material, such as being lightweight and resistant to condensation. Moreover, since it is custom-made from a mortar-like composition, panels of various shapes can be freely formed.
第１．２．３図は実施例の電磁波吸収パネルの斜視図で
ある。
■・・・電磁吸収パネル、２・・・金網、３・・・口達
。
＼
第 １ Ａ
第２図FIG. 1.2.3 is a perspective view of an electromagnetic wave absorbing panel according to an embodiment. ■...Electromagnetic absorption panel, 2...wire mesh, 3...mouth. ＼ 1st A Figure 2
Claims (1)
ミック粉粒体および植物質細片を混合してなった組成物
の硬化体からなることを特徴とする電磁波吸収ボード。(1) An electromagnetic wave absorbing board characterized by being made of a hardened composition made by mixing cement mortar with ceramic powder obtained by firing clay and vegetable fragments.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14443089A JPH0738510B2 (en) | 1989-06-07 | 1989-06-07 | Electromagnetic wave absorption board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14443089A JPH0738510B2 (en) | 1989-06-07 | 1989-06-07 | Electromagnetic wave absorption board |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH039598A true JPH039598A (en) | 1991-01-17 |
| JPH0738510B2 JPH0738510B2 (en) | 1995-04-26 |
Family
ID=15362014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14443089A Expired - Lifetime JPH0738510B2 (en) | 1989-06-07 | 1989-06-07 | Electromagnetic wave absorption board |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0738510B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8573654B2 (en) | 2009-01-27 | 2013-11-05 | Kubota Corporation | Pipe joint |
| CN111978032A (en) * | 2019-05-21 | 2020-11-24 | 中国人民解放军军事科学院军事医学研究院 | Porcelain stone-based electromagnetic radiation absorbing material for buildings and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5617964A (en) * | 1979-07-24 | 1981-02-20 | Asahi Chemical Ind | Grc composition for extrusion forming |
| JPS59152696A (en) * | 1983-02-19 | 1984-08-31 | アイン・エンジニアリング株式会社 | Method of forming electromagnetic shield composite material |
| JPS61269399A (en) * | 1985-05-24 | 1986-11-28 | 株式会社ザイエンス | Improved wood for shielding electromagnetic shield |
-
1989
- 1989-06-07 JP JP14443089A patent/JPH0738510B2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5617964A (en) * | 1979-07-24 | 1981-02-20 | Asahi Chemical Ind | Grc composition for extrusion forming |
| JPS59152696A (en) * | 1983-02-19 | 1984-08-31 | アイン・エンジニアリング株式会社 | Method of forming electromagnetic shield composite material |
| JPS61269399A (en) * | 1985-05-24 | 1986-11-28 | 株式会社ザイエンス | Improved wood for shielding electromagnetic shield |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8573654B2 (en) | 2009-01-27 | 2013-11-05 | Kubota Corporation | Pipe joint |
| US9488300B2 (en) | 2009-01-27 | 2016-11-08 | Kubota Corporation | Pipe joint |
| US9719618B2 (en) | 2009-01-27 | 2017-08-01 | Kubota Corporation | Pipe joint |
| US10006572B2 (en) | 2009-01-27 | 2018-06-26 | Kubota Corporation | Pipe joint |
| US10520119B2 (en) | 2009-01-27 | 2019-12-31 | Kubota Corporation | Pipe joint |
| CN111978032A (en) * | 2019-05-21 | 2020-11-24 | 中国人民解放军军事科学院军事医学研究院 | Porcelain stone-based electromagnetic radiation absorbing material for buildings and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0738510B2 (en) | 1995-04-26 |
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