JPS584205A - Radio wave shielding material - Google Patents

Radio wave shielding material

Info

Publication number
JPS584205A
JPS584205A JP56102028A JP10202881A JPS584205A JP S584205 A JPS584205 A JP S584205A JP 56102028 A JP56102028 A JP 56102028A JP 10202881 A JP10202881 A JP 10202881A JP S584205 A JPS584205 A JP S584205A
Authority
JP
Japan
Prior art keywords
radio wave
wave shielding
shielding material
foam
cured film
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.)
Pending
Application number
JP56102028A
Other languages
Japanese (ja)
Inventor
諭 田村
鈴木 紀二良
堀向 克己
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shin Etsu Polymer Co Ltd
Shin Etsu Chemical Co Ltd
Original Assignee
Shin Etsu Polymer Co Ltd
Shin Etsu Chemical Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shin Etsu Polymer Co Ltd, Shin Etsu Chemical Co Ltd filed Critical Shin Etsu Polymer Co Ltd
Priority to JP56102028A priority Critical patent/JPS584205A/en
Publication of JPS584205A publication Critical patent/JPS584205A/en
Pending legal-status Critical Current

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  • Hard Magnetic Materials (AREA)
  • Soft Magnetic Materials (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
  • Conductive Materials (AREA)
  • Aerials With Secondary Devices (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。
(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 本発明は電波遮蔽材料、特には耐候性、耐熱性のすぐれ
た加工性のよい改良された電波遮蔽材料に関するもので
ある。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a radio wave shielding material, and particularly to an improved radio wave shielding material with excellent weather resistance, heat resistance, and workability.

電波遮蔽効果覆:ついては、従来から金属、金網、各檀
プラスチックを含む誘導体などが使用されてきているが
、金属製のものはすぐれた電波遮蔽効果を示すが、加工
性、成形性が劣るという不利があり、プラスチック裂の
ものC二つし1では、プラスチック材に抵抗被膜を設け
たもの、カーボン含有ゴムまたはカーボン含有発泡体で
作ったもの、さらC;はフェライト粉末とゴムを練り合
わせ、これを金属板で裏打ちしたものなどがあるが、こ
れらはいずれも耐熱性、耐候性がわるく機械的強度も弱
いという欠点があった。
Radio wave shielding effect: For this reason, metals, wire mesh, and derivatives including various plastics have traditionally been used, but metal products have excellent radio wave shielding effects, but are said to have poor workability and moldability. There are disadvantages, such as those with plastic cracks.For C, two are made of a plastic material with a resistive coating, carbon-containing rubber or carbon-containing foam, and C; is made by kneading ferrite powder and rubber. There are some types that are lined with a metal plate, but these all have the drawbacks of poor heat resistance, poor weather resistance, and low mechanical strength.

・ 他方、この電波遮蔽材料については、電気通信の発達に
伴なうカラーテレビ、宇宙通信によるレーザー使用度の
上昇、家庭内(:おける電子し、ンジなどのようなマイ
クロ波加熱装置の増加、さら≦:は市街地C二おける高
層建築の増加などによる電波障害の激増のため、上記し
たような欠点のない、すぐれた性能をもつ材料の提供が
求められている。
・ On the other hand, regarding this radio wave shielding material, there is an increase in the use of color televisions and lasers for space communications due to the development of telecommunications, an increase in the use of microwave heating devices such as electronic heaters in the home, Furthermore, due to the dramatic increase in radio wave interference caused by the increase in the number of high-rise buildings in urban areas, there is a need to provide materials with excellent performance that are free from the above-mentioned drawbacks.

本発明はこの要求5;応える改良された電波遮蔽材料に
関するものであり、これは連続気泡構造を  。
The present invention relates to an improved radio wave shielding material that meets this requirement 5, which has an open cell structure.

もつプラスチック発泡体に導電性物質および/または磁
性体物質を分散害せた液状オルガツボ5Vロキ苧ンを含
浸、硬化させてなることを特徴とするものである。
It is characterized in that it is made by impregnating a plastic foam with a liquid organobacterial 5V resin in which a conductive material and/or a magnetic material is dispersed and hardening it.

これを説明すると、本発明看らはプラスチックを主剤と
する電波遮蔽材料1:ついて種々検討の結果、プラスチ
ック発泡体の内外面をオルガノボッシロキチンの硬化膜
で被覆4すればプラスチックの欠点である耐熱性、耐候
性が改善され、機械的強度も同上されること、このオル
ガノボッシロキチンに導電性物質、磁性体を分散させれ
ばこの硬化膜をもつプラスチック発泡体はすぐれた電波
遮蔽材料となることを見出して、本発明を完成させた。
To explain this, the present inventors have conducted various studies on radio wave shielding materials based on plastic (1), and have found that if the inner and outer surfaces of a plastic foam are coated with a hardened film of organobossilochitin (4), the drawbacks of plastic can be avoided. Heat resistance and weather resistance are improved, as well as mechanical strength.If a conductive substance or a magnetic substance is dispersed in this organobossilochitin, a plastic foam with this cured film can be made into an excellent radio wave shielding material. The present invention was completed based on this discovery.

本発明の電波遮蔽材料を構成する主材としてのプラスチ
ック発泡体は、ポリ塩化ビニル、ポリエチレン、ポリス
プレン、ポリウレタンなどの熱可塑性樹脂、あるいはエ
ボキV樹脂、フェノール樹脂などの熱硬化性樹脂から作
′られる発泡体であるが、これは後述のオルガノボッシ
ロキチンの含浸さらC二はその硬化膜を発泡体金体に設
ける必要があることから遇−気泡構造をもつものとする
必要がある。この発泡体の密度ないし気孔率斌特直二こ
れを規定する必要はなく、これ線図的とする電波總蔽材
料直二要求される性状にもとづいて適宜選択すればよい
が、通常これは密度20〜70Kf/lE′、セル数1
0〜80個/21■の111I!囲とすることがよい。
The plastic foam as the main material constituting the radio wave shielding material of the present invention is made of thermoplastic resin such as polyvinyl chloride, polyethylene, polyprene, polyurethane, or thermosetting resin such as Evoki V resin or phenolic resin. Although the foam is impregnated with organobossil chitin, which will be described later, it is necessary to provide a cured film on the foam metal body, so it is necessary to have an open-cell structure. It is not necessary to specify the density or porosity of the foam, and it may be selected as appropriate based on the required properties of the radio wave shielding material, but usually the density or porosity is 20-70Kf/lE', number of cells: 1
111I of 0-80 pieces/21■! It is recommended that the

他方、このプラスチック発泡体#−含浸される液状オル
ガノ、ポリVクキサンは、ジオルガノポリVロキナンを
主体とする線状構造物でもあるいは主鎖中に各種の分校
構造をもつフェス状構造体のいずれでもよいが、これは
硬化によってシリコーンゴム弾性体となる、いわゆるV
9コーンゴム組成物であることが望ましく、これには通
常RTVゴムとして市販されている常温硬化性のもの、
あるいは熱加硫性のいずれも使用することができる。
On the other hand, the liquid organo-poly V cuxane to be impregnated into this plastic foam # may be either a linear structure mainly composed of diorgano poly V rokinane or a face-like structure having various branch structures in the main chain. However, this material becomes a silicone rubber elastic material by curing, so-called V
A 9-cone rubber composition is preferable, and includes a room-temperature curable rubber that is usually commercially available as an RTV rubber,
Alternatively, any heat vulcanizable material can be used.

これらの組成物は作業性、加工性の点から溶媒で希釈し
て使用してもよいが、環境汚染などの画からは無溶媒状
態で使用することがよく、そのためg;は比較的粘度の
低いR’X’Vゴム編成物とすることがよい。この粘度
は無溶媒でこれをプラスチック発泡体g二含浸審せると
いうことから、2S℃で1へ000 o8以下のものと
することがよ(、これを溶媒で希釈して使用する場合は
、オルガノボッシロキチンの濃度をS%以上好ましくは
10%以上とし、その粘度を10へ000 (18以下
特1;は10,0OOo8以下とすることがよい。
These compositions may be used diluted with a solvent from the viewpoint of workability and processability, but to prevent environmental pollution, it is better to use them without a solvent. It is preferable to use a rubber knitted material with a low R'X'V. Since this viscosity is used without a solvent and is impregnated with plastic foam, it is recommended that the viscosity be less than 1000°C at 2S°C (if it is used after being diluted with a solvent, The concentration of bossirochitin is preferably S% or more, preferably 10% or more, and the viscosity is preferably 10 to 000 (18 or less, especially 1: 10,0OOo8 or less).

このオルガノボツシaキナシC二分散される導電性物質
、磁性体物質はいずれも公知のものでよく、これらに粉
末状、繊維状物としてオルガノポツリロキナシ中C:分
散される。この導電性物質としては金、銀、鋼、ニッケ
ル、アルミニウムなどの金属、各種カーポジ物質など#
【例示され、この磁性体物質としてはNi−Zm系、B
&系、ハI’4系などのフェライト物質が挙げられるが
、これらはその2檀またF12種以上が併用されてもよ
い。
Any of the conductive substances and magnetic substances to be dispersed in the organopolyte may be any known material, and these are dispersed in the form of powder or fibers in the organopolyte. Examples of this conductive material include metals such as gold, silver, steel, nickel, and aluminum, and various carposi materials.
[Examples include Ni-Zm, B
Examples include ferrite materials such as & type and HI'4 type, but two of these or F12 or more types may be used in combination.

本発明の電波遮蔽材料は上記したプラスチック発泡体を
、前記の導電性物質糞よび/または磁性体物質を分散し
た液状オルガツボgVaキナνで処理することによって
得られるが、この処理はプ ・ラステツタ発泡体を当該
オルガノボッシロキチン1;浸漬したのち余分のものを
ロールでしぼりとるか、1ラスデック発泡体上ζ;オル
ガノボッνロキナνをa−ルコーター、ナイフコーター
などで充分に倫布してこれを内@1:台浸含浸たのち、
これを常温または加熱下に乾燥、硬化膜せること5;よ
って行なわれるが、この硬化C二当っては80〜180
℃で加熱することが硬化膜のそジュラス向上%生麿性向
上というWから有利とされる。しかし、この硬化膜の強
度向上というためg二は上記した導電性物質として41
Iε;比表面積が1!8M#1以上のカーポジブラック
、例えばケッテェンブラック(オランダ・アクゾ社l1
11商品名)などを使用することがよく、これをオルガ
ノボリシ四キψン100重量部に対し10重量部以上添
加したものはその強い11m活性(;よって硬化膜が補
強される。このようにS理された材料はついで所望の形
状C:裁断されて電波遮蔽材料とされるが、これは予じ
め所定の形状に裁断したものに上記のオルガノボリシロ
キナシ処理を行なってもよいし、さらC;このものはそ
の裏面に各種金属材料、例えばアルミニウムホイルなど
の補強肩で裏打ち処理をしてもよい。
The radio wave shielding material of the present invention can be obtained by treating the above-mentioned plastic foam with the above-mentioned conductive material dung and/or liquid orgacubo gVa kina ν in which a magnetic material is dispersed. After immersing the body in the organobossirochitin, squeeze out the excess with a roll, or thoroughly coat the body with organobots νrokina ν on the lath deck foam using a coater, knife coater, etc. Inside @1: After stand immersion and impregnation,
This is dried at room temperature or under heat to form a cured film (5); however, this curing C2 is 80 to 180
Heating at a temperature of .degree. C. is considered advantageous because it improves the hardness of the cured film and improves the % malleability of the cured film. However, in order to improve the strength of this cured film, g2 is used as the above-mentioned conductive material.
Iε: Carposi black with a specific surface area of 1!8M#1 or more, such as Kettenblack (Netherlands Akzo Ltd. l1)
11 (trade name) is often used, and when 10 parts by weight or more of this is added to 100 parts by weight of organoboric silicone, the cured film is reinforced. The processed material is then cut into a desired shape C: radio wave shielding material, which may be cut into a predetermined shape in advance and subjected to the above-mentioned organoborishirokinashi treatment, or further processed. C: The back side of this product may be lined with a reinforcing shoulder made of various metal materials, such as aluminum foil.

上述のよう1二して得られた本発明の電波遮蔽材料は、
プラスチック発泡体の内外層C;導電性および/または
磁性をもったオルガノポヲνロキナンの硬化膜が密に形
成されたものであるので、このものは耐熱性、耐候性C
:すぐれており、これはまたその硬化膜(;よって機械
的強度も向上されているので、従来のプラスチック系の
電波遮蔽材料と比べて高温条件下、あるいは屋外での使
用l二も充分口その性−を発揮することができるし、こ
のものはプラスチック発泡体としての性状から柔軟でそ
の加工も容易なので、例えばこれを空間と媒質とのイン
ピーダンス比を小事(するためC:ピラミッド形、波形
1:加工することも容具であり、これはまたこのオルガ
ノボリシロキナン硬化膜が疎水性であるということから
高温度下でのその表面の電波反射係数が小さいという利
点もあるので、各種方wC二巾広(使用することができ
る。
The radio wave shielding material of the present invention obtained as described above is as follows:
The inner and outer layers of the plastic foam are densely formed cured films of conductive and/or magnetic organopoborokinane, so this material has heat resistance and weather resistance.
The cured film also has improved mechanical strength, making it more durable under high-temperature conditions or outdoors than conventional plastic-based radio wave shielding materials. Because of its properties as a plastic foam, it is flexible and easy to process, so for example, it can be used to improve the impedance ratio between the space and the medium (C: pyramid shape, waveform 1). : Processing is also a container, and since this organoborisilokinane cured film is hydrophobic, it also has the advantage that the radio wave reflection coefficient of its surface is small under high temperatures, so it can be used in various ways. Two widths (can be used.

つぎC;本発明の実施例をあげる。Next C: Examples of the present invention will be given.

実施例1゜ 逼繞気泡構造のプラスチック発泡体として密度0.02
 S fill、 セ4敏35〜44個/25傷、硬8
10 Q/mのウレタンフオーム・エバーライ)HR−
40(ブリデストシ社製、商品名)を使用し、これ4e
!LOMsx $ 00s+sx 500mtm酸二し
た。
Example 1: Density 0.02 as a plastic foam with a closed cell structure
S fill, SE4 dexterity 35-44 pieces/25 wounds, hardness 8
10 Q/m urethane foam Everly) HR-
40 (manufactured by Bridestoshi, trade name), this 4e
! LOMsx $00s+sx 500mtm acid dihydrogen.

つぎl二、液状シツコーシゴ五履成物111900(W
)〔信越化学社製・商品名1100部とケッチェンブラ
ックgo(オランダ・アクゾ社商品名〕30部とを灘合
し、これをトル12100部で希釈して、液状オルガツ
ボ9Vロキチン組成物を作り、これをロールコータ−で
前記ウレタンフオーム+:@布、含浸させたのち、15
0℃で3時間加熱したところ、フオームの内外層C;オ
ルガツボ―Vaキナン硬化膜をもつ密度0.4N/IK
”の材料が得られた。
Next, liquid liquid material 111900 (W
) [trade name, manufactured by Shin-Etsu Chemical Co., Ltd., 1100 parts and 30 parts of Ketjenbrak go (trade name, Akzo, Netherlands) were combined, and this was diluted with 12,100 parts of tolu to prepare a liquid organoacupoint 9V lokitin composition. , This was impregnated with the urethane foam+:@cloth using a roll coater, and then 15
When heated at 0°C for 3 hours, the inner and outer layers of the foam were found to have a density of 0.4N/IK with a cured film of Orgacu-Va quinane.
” materials were obtained.

ついで、この材料C:ついて、その広帯域周波数に禽け
る電圧減衰率を測定したところ、これ線410dB以上
の値を示し、このものは電波遮蔽材として良好なもので
あり、これはまた下表1;承すようC;機械的性質、耐
熱性、耐候性が、カーボンブラック含有のポヅウレタン
をクロロプレシラチックで処理した従来品g;(らべす
ぐれていた。
Next, when we measured the voltage attenuation rate over a wide band frequency of this material C, it showed a value of 410 dB or more, indicating that this material is good as a radio wave shielding material, which is also shown in Table 1 below. ; Acceptable C; Mechanical properties, heat resistance, and weather resistance were superior to conventional product G, which was prepared by treating carbon black-containing poduurethane with chloropresilic acid.

実施例    従来品 (11機械的性質 引張強RC辱/III)    8.11    2−
4伸  び(%)   意9Q     290411
11度(KF/d)    2.5    2.012
1 1#熱1k(2Go℃Xll0時間処理)引張強度
CM/1m)    0.82   0.0SL$11
1強度(fillai3    G、8    0.0
5加熱減量(%)6.6     龜3 圧縮永久徹%)     31g     Zo03 
 耐候性(クエデオメーター中4J$0時間処理)引張
強度(身/d)   雪7   (測定不能)伸  び
(%)     230    (#)4悩強度(M/
IfJ    12   (’  )実施例λ 前例において使用したウレタンフオーム”sfl状V 
l ニア −ンコム繊成物1cl190G(W)(前出
)100部、y@Oフェライト300部、ケラチェ雪 
 1 シブラック1co(16310部、およびトルエン10
0部からなる液状オルガノボリシロキナシ颯成物をa−
ルコーターで憶布、含浸し、180℃で3時間加熱処理
して得た材料は書間が0.11117111であり、こ
れを厚さ0.1閣のアルミニウムホイルで裏打ちした電
波遮蔽材料は、10()Hz〜12囲の狭帯域周波歓C
;糞いてもその電圧減衰率が80 dB以上を示した。
Example Conventional product (11 Mechanical property tensile strength RC insult/III) 8.11 2-
4 Growth (%) 9Q 290411
11 degrees (KF/d) 2.5 2.012
1 1# Heat 1k (2Go℃Xll0 hour treatment) Tensile strength CM/1m) 0.82 0.0SL$11
1 intensity (fillai3 G, 8 0.0
5 Heating loss (%) 6.6 Torque 3 Compression permanent weight loss (%) 31g Zo03
Weather resistance (4J$0 hour treatment in Quedeometer) Tensile strength (body/d) Snow 7 (unmeasurable) Elongation (%) 230 (#) 4 Tensile strength (M/d)
IfJ 12 (') Example λ Urethane foam "sfl-like V" used in the previous example
l Ni-Ncom fiber composition 1cl190G (W) (above) 100 parts, y@O ferrite 300 parts, Kerache snow
1 Siblack 1co (16310 parts, and toluene 10
A liquid organoborisiloxane material consisting of 0 parts a-
The material obtained by impregnating and impregnating the memory cloth with a le coater and heat-treating it at 180℃ for 3 hours has a spacing of 0.11117111, and the radio wave shielding material made by lining this with aluminum foil with a thickness of 0.1 is 10. Narrow band frequency range () Hz ~ 12 C
;Even if it was dung, the voltage attenuation rate was more than 80 dB.

なお、この材料のIIIに前例で得た材料を多層構造と
した4E波吸収体を配置したものは複合形電波吸収体と
してすぐれた性能を示した。
In addition, the material in which a 4E wave absorber having a multilayer structure of the material obtained in the previous example was arranged in III of this material showed excellent performance as a composite radio wave absorber.

特許出願人 信越ポリマー株式会社 手続補正書 昭和S・年1月4 日 2、発明の名称 電波遮蔽材料 3、補正をする者 事件との関係 特許出−人 名称 信越ボッマー橡式会社 4、代 理゛ 人 住 所  〒103  東京都中央区日本橋本町4丁目
9番地永井ビル 〔電話東京(270) 08511.
01159)1)’91111F410j[9行)「8
.3」を「ss」と補正する。
Patent Applicant: Shin-Etsu Polymer Co., Ltd. Procedural Amendment Document, Showa S, January 4, 2017 2, Name of the invention: Radio wave shielding material 3, Relationship with the person making the amendment: Name of the patent originator: Shin-Etsu Bommer Co., Ltd. 4, Agent゛ Address Nagai Building, 4-9 Nihonbashi Honmachi, Chuo-ku, Tokyo 103 [Telephone Tokyo (270) 08511.
01159) 1) '91111F410j [9 lines) '8
.. 3" is corrected to "ss".

以上 9A−that's all 9A-

Claims (1)

【特許請求の範囲】[Claims] 1、連続気泡構造をもつプラスチック発泡体f;、導電
性物質および/または磁性体物質を分散させた液状オル
ガノポリシロキサンを含浸、硬化させてなることを特徴
とする電波遮蔽材料4 導電性部材として比表面積が2
50d111以上のカーボンブラックを使用してなる特
許請求の軸V!U第1第1戦記電波遮蔽材料
1. Radio wave shielding material characterized by being formed by impregnating and curing a plastic foam f with an open cell structure and liquid organopolysiloxane in which a conductive substance and/or a magnetic substance is dispersed. 4 As a conductive member Specific surface area is 2
The patented shaft V is made using carbon black of 50d111 or more! U 1st War Record Radio Wave Shielding Material
JP56102028A 1981-06-30 1981-06-30 Radio wave shielding material Pending JPS584205A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56102028A JPS584205A (en) 1981-06-30 1981-06-30 Radio wave shielding material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56102028A JPS584205A (en) 1981-06-30 1981-06-30 Radio wave shielding material

Publications (1)

Publication Number Publication Date
JPS584205A true JPS584205A (en) 1983-01-11

Family

ID=14316294

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56102028A Pending JPS584205A (en) 1981-06-30 1981-06-30 Radio wave shielding material

Country Status (1)

Country Link
JP (1) JPS584205A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60156769A (en) * 1984-01-26 1985-08-16 Daicel Chem Ind Ltd Conductive water-disperse coating
JPS63262899A (en) * 1987-04-21 1988-10-31 フジタ工業株式会社 Manufacture of non-shrinkable pc board with electric wave absorbing performance
JPH01102924U (en) * 1987-12-28 1989-07-12
US6521150B1 (en) 1998-03-23 2003-02-18 Fuji Polymer Industries Co., Ltd. Method for producing an electromagnetic wave absorbing thermoconductive silicone gel molded sheet

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4856723A (en) * 1971-11-22 1973-08-09
JPS5098978A (en) * 1973-12-29 1975-08-06
JPS53896A (en) * 1976-06-25 1978-01-07 Japan Synthetic Rubber Co Ltd Pressureesensing resistor with excellent durability and method of manufacture thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4856723A (en) * 1971-11-22 1973-08-09
JPS5098978A (en) * 1973-12-29 1975-08-06
JPS53896A (en) * 1976-06-25 1978-01-07 Japan Synthetic Rubber Co Ltd Pressureesensing resistor with excellent durability and method of manufacture thereof

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60156769A (en) * 1984-01-26 1985-08-16 Daicel Chem Ind Ltd Conductive water-disperse coating
JPH0549714B2 (en) * 1984-01-26 1993-07-27 Daicel Chem
JPS63262899A (en) * 1987-04-21 1988-10-31 フジタ工業株式会社 Manufacture of non-shrinkable pc board with electric wave absorbing performance
JPH0216037B2 (en) * 1987-04-21 1990-04-13 Fujita Corp
JPH01102924U (en) * 1987-12-28 1989-07-12
US6521150B1 (en) 1998-03-23 2003-02-18 Fuji Polymer Industries Co., Ltd. Method for producing an electromagnetic wave absorbing thermoconductive silicone gel molded sheet

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