JP3421771B2 - Conductive plate-shaped molded product - Google Patents
Conductive plate-shaped molded productInfo
- Publication number
- JP3421771B2 JP3421771B2 JP07634693A JP7634693A JP3421771B2 JP 3421771 B2 JP3421771 B2 JP 3421771B2 JP 07634693 A JP07634693 A JP 07634693A JP 7634693 A JP7634693 A JP 7634693A JP 3421771 B2 JP3421771 B2 JP 3421771B2
- Authority
- JP
- Japan
- Prior art keywords
- plate
- molded product
- conductive plate
- surface layer
- carbon
- 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.)
- Expired - Fee Related
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- Electrodes For Compound Or Non-Metal Manufacture (AREA)
Description
【発明の詳細な説明】
【０００１】
【産業上の利用分野】この発明は、電気分解槽等の電極
等に適した導電性板状成形品に関し、導電性、機械的強
度、耐食性および加工性に優れ、かつ大きさや形状の自
由度が大きい導電性板状成形品を提供するものである。
【０００２】
【従来の技術】電極等に使用するための導電性材料とし
て、金属材料、炭素質材料および黒鉛質材料等が知られ
ている。これらの材料中、金属材料は、導電性が高く、
機械的強度に優れている反面、通電によりイオン化し、
溶出して激しく消耗するという欠点を備えている。特に
クローム等の重金属を含有する場合は、その溶出によっ
て環境が汚染される。また、白金等の貴金属は、電極等
に使用した場合の消耗が少ない反面、極めて高価であ
り、一般には使用が困難である。一方、炭素質材料や黒
鉛質材料は、電極等に使用した場合の消耗が少ない反
面、機械的強度が低いため、強度が要求される場合に使
用することができず、かつ加工性に劣るという問題があ
った。
【０００３】このような問題に対処するための導電性材
料として、炭素繊維や金属繊維等の導電性充填材を添加
した樹脂成形板が知られている。しかし、これらの樹脂
成形板は、上記の繊維が補強材の役割を果たして機械的
強度が向上する反面、導電性が不十分であり、かつ電極
として使用した場合に通電不能になり易く、寿命が短か
かった。また、炭素繊維強化樹脂成形板を焼成して得ら
れる炭素繊維／炭素複合材料が知られているが、これは
機械的強度および導電性がともに高く、通電による消耗
も少ない反面、焼成工程を必要とするため、製造コスト
が高くなり、かつ用途によっては機械的強度が不十分で
あった。
【０００４】また、上記の導電性充填材を添加した合成
樹脂成形板の表面に炭素繊維からなる織物やフェルト、
または導電性粉末入り樹脂ペーストを付着した導電性材
料が知られているが（特公平３−５８１４９号公報、特
開昭５８−１６６０５０号公報および特開昭６０−２２
１９０９号公報等参照）、この場合も導電性が充分でな
いという問題があった。
【０００５】
【発明が解決しようとする課題】この発明は、炭素繊維
等の導電性充填材を含む樹脂成形板の表面に炭素粒子か
らなる表面層を一体に設けることにより、導電性および
機械的強度に優れ、かつ通電による消耗が少なくて電極
等に好適であり、しかも耐食性や加工性にも優れ、大き
さや形状の自由度が高く、安価に製造することが可能な
導電性板状成形品を提供するものである。
【０００６】
【課題を解決するための手段】この発明は、導電性を有
し、かつ機械的強度の優れた板状樹脂基材の少なくとも
片面に炭素粒子からなる表面層が一体に成形されてお
り、上記板状樹脂基材が炭素繊維および／または金属繊
維を含有する熱硬化性樹脂または熱可塑性樹脂からな
り、この板状樹脂基材の厚み方向の体積固有抵抗値が１
０Ω・cm未満、その曲げ強度が５kg／mm2 以上であり、
上記の炭素粒子からなる表面層が炭素または黒鉛の粒状
物または破砕物からなり、その直径が０．５〜５mmであ
ることを特徴とする導電性板状成形品である。
【０００７】この発明の導電性板状成形品を製造する方
法は、特に限定されないが、熱可塑性樹脂または熱硬化
性樹脂の板状成形品を製造するための一般的方法に準じ
た方法で製造することができる。例えば、所要の型内に
必要量の炭素粒子を均一に載置し、その上にシート状の
樹脂基材を載せ、熱プレスを施す等の方法によって製造
することができる。得られた導電性板状成形品におい
て、板状樹脂基材および表面層の両者は、板状樹脂基材
の一部が炭素粒子からなる表面層に含浸することにより
強固に一体化される。
【０００８】なお、上記の板状樹脂基材には、可塑剤、
安定剤、硬化剤、内部離型剤および低収縮剤等の添加
剤、または黒鉛や金属等の粉末の導電性充填剤を添加す
ることができる。また、炭素粒子からなる表面層には補
強材、導電性付与材や接着剤等を加えることができる。
そして、この炭素粒子からなる表面層の厚みは、電極と
して使用する際に要求される性能と機械的強度に応じて
設定することができるが、導電性板状成形品全体の厚み
の２０〜８０％が好ましく、２０％未満では所期の通電
特性が得難く、８０％を超えると機械的強度が低下す
る。なおまた、この発明の導電性板状成形品には、機械
的強度を更に増すために強化材繊維の織物、編物等を挿
入または付加することができる。
【０００９】
【作用】この発明の導電性板状成形品は、炭素繊維や金
属繊維を含有し、導電性と機械的強度に優れた板状樹脂
基材と、炭素粒子からなる表面層とを一体に成形したも
のであるため、その表面層側を対極面にして電気分解槽
等の電極に使用した場合に、通電消耗率が低く、寿命が
長い等、電極として優れた性能を発揮する。その理由
は、必ずしも十分に解明されていないが、対極面の炭素
粒子が上記の微細な粒状物または破砕物からなり、表面
積の大きいことが電気化学的反応に対して有利であるた
めと推測される。
【００１０】一方、板状樹脂基材が導電性を有しながら
機械的強度を保持する役割を果たすので、上記の導電性
板状成形品は、導電性および機械的強度の双方に優れ、
通電時の消耗が少ない長寿命で高性能の電極となる。ま
た、炭素粒子と樹脂成分とが一体に成形されているた
め、耐食性および加工性に優れ、導電性板状成形品とし
て大きさや形状が任意のものを容易に、かつ安価に製造
することができる。
【００１１】ただし、表面層の炭素粒子の直径が０．５
mm未満の場合は、成形時または使用中に脱落し易くて不
適当である。反対に、直径が５mmを超える場合は、通電
消耗率の低減効果が乏しい。また、上記板状樹脂基材に
おける厚み方向の体積固有抵抗値が１０Ω・cm以上の場
合は、導電性板状成形品における厚み方向の導電性が不
足し、電極等として満足なものが得られない。また、板
状樹脂基材の曲げ強度が５kg／mm2 未満の場合は、導電
性板状成形品の機械的強度が不十分となり、強度を要求
される用途には使用することができない。
【００１２】
【実施例】
実施例１
不飽和ポリエステル樹脂１００部、ＰＡＮ系炭素繊維チ
ョップドファイバー（平均繊維長６mm）５０部、黒鉛粉
末１００部および硬化剤２部を混練し、厚さ４mmのシー
ト状樹脂基材を作製した。一方、金型内に平均粒径２mm
の粒状黒鉛を単位面積当り重量が約０．４ｇ／cm2 にな
るように均一に載置し、その上に上記のシート状樹脂基
材を置き、温度１４５℃、圧力６０kg／cm2 、時間１０
分の熱プレスを行って厚さ約６mmの導電性板状成形品を
得た。
【００１３】実施例２
金型内に平均粒径４mmの粒状黒鉛を単位面積当り重量が
約０．４ｇ／cm2 になるように均一に載置し、その上に
実施例１のシート状樹脂基材を置き、さらに炭素繊維製
の平織物を１枚重ね、温度１４５℃、圧力６０kg／c
m2 、時間１０分の熱プレスを行って厚さ約６mmの導電
性板状成形品を作製した。
【００１４】比較例１
金型内に厚さ２mmの炭素薄板を置き、その上に実施例１
のシート状樹脂基材を置き、温度１４５℃、圧力６０kg
／cm2 、時間１０分の熱プレスを行って厚さ約６mmの導
電性板状成形品を作製した。
【００１５】比較例２
金型内に実施例１のシート状樹脂基材（ただし、厚さ６
mm）のみを置き、これを温度１４５℃、圧力６０kg／cm
2 、時間１０分の熱プレスを行って導電性板状成形品に
した。
【００１６】上記の実施例１、２および比較例１、２の
導電性板状成形品について体積固有抵抗、曲げ強度およ
び電極としての通電消耗速度を以下の方法で測定した。
その測定結果を表１に示した。なお、上記実施例１の導
電性板状成形品に孔開け加工を行ったところ、容易に加
工することができ、欠落等は全く生じなかった。
【００１７】体積固有抵抗値の測定方法
板面に沿った方向の値は、長さ１００mm、幅１０mm、厚
さ６mmの試験片を作製し、長手方向の両端面に銀ペース
トを塗布し、その間の抵抗をディジタルマルチメータ
（横河電機社製、ＹＯＫＯＧＡＷＡ ７５５２）によ
り、４端子法で測定した。また、板の厚さ方向の値は、
長さ１０mm、幅１０mm、厚さ６mmの試験片を作製し、上
下両面に銀ペーストを塗布し、その間の抵抗を上記同様
に測定した。ただし、表中、Ａは板面に沿った方向の
値、Ｂは厚さ方向の値である。
【００１８】曲げ強度の測定
ＪＩＳ Ｋ７０７４「炭素繊維強化プラスチックの曲げ
試験方法」の３点曲げ法に準じて試験した。表面層と樹
脂基材とからなる試験片では、表面層を支え、樹脂基材
側から圧した場合の測定値を表１に示した。
【００１９】電極としての通電消耗速度の試験法
塩化ナトリウム１．５ｇ／リットルの水溶液を循環させ
た槽中に導電性板状成形品２枚を電極として１０mm間隔
で対向して設置し( ただし、表面層を有するものは、そ
の表面層を対向させる）、定電流制御によって電流密度
３０mA／cm2 の直流電流を連続的に７０時間通電したと
きの電極板の重量減少を測定し、通電消耗速度を求め
た。
【００２０】
表 １
体積固有抵抗（Ω・cm） 曲げ強度 通電消耗速度
Ａ Ｂ （kg／mm2 ） （ｇ／ＡＨ）
実施例１ ０．０１１ ０．２０ ５．８ ０．０５３
実施例２ ０．００９ ０．２３ ６．２ ０．０６４
比較例１ ０．００４ ０．１２ ６．５ ０．０８５
比較例２ ０．０３９ ０．４５ ９．５ 10時間で通電不能
【００２１】上記の表１から明らかなとおり、比較例２
は、炭素繊維を含有する板状樹脂基材のみからなり、表
面層を有しない炭素繊維含有樹脂単体の板状物であるた
め、曲げ強度は高いが、導電性が劣り、通電時間１０時
間で通電不能になった。そして、この比較例２と同じ板
状樹脂基材に平均粒径２または４mmの粒状黒鉛とを一体
に成形したこの発明の実施例１、２は、いずれも厚み方
向の体積固有抵抗値が低く、曲げ強度が高く、かつ通電
消耗速度が低くて、電極として優れた性能を示した。こ
れに対し、比較例１は、表面層として炭素粒子ではなく
板状炭素を使用したため、導電性、機械的強度は実施例
１、２と大差がないが、通電消耗速度が高く、電極とし
ての耐久性が実施例１、２に劣る結果になった。
【００２２】
【発明の効果】この発明の導電性板状成形品は、導電性
を有し、かつ機械的強度に優れた板状樹脂基材と、炭素
粒子からなる表面層とを一体に成形したものであるか
ら、上記のとおり、導電性および機械的強度の双方に優
れ、かつ電極として使用した場合の通電による消耗が少
なく、長時間の使用に耐える。また、金型の使用により
炭素粒子と板状樹脂基材とを一体に成形することができ
るので、大きさや形状の自由度が大きく、孔開け加工や
切削等の加工性も炭素材に比べて高い。さらに、焼成を
必要としないので、製造原価を低くすることができ、機
械的強度を要求されるような電極として、特に有用であ
る。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a conductive plate-like molded product suitable for an electrode of an electrolytic cell or the like, and relates to conductivity, mechanical strength, corrosion resistance and workability. An object of the present invention is to provide a conductive plate-like molded product having excellent flexibility and a large degree of freedom in size and shape. [0002] Metallic materials, carbonaceous materials, graphite materials and the like are known as conductive materials for use in electrodes and the like. Among these materials, metal materials have high conductivity,
Although it has excellent mechanical strength, it is ionized by electricity,
It has the drawback that it elutes and is consumed heavily. In particular, when heavy metals such as chrome are contained, the elution thereof pollutes the environment. Precious metals such as platinum are less expensive when used for electrodes and the like, but are extremely expensive and are generally difficult to use. On the other hand, carbonaceous materials and graphite materials are less wearable when used for electrodes and the like, but have low mechanical strength, so they cannot be used when strength is required, and are inferior in workability. There was a problem. [0003] As a conductive material for solving such a problem, a resin molded plate to which a conductive filler such as carbon fiber or metal fiber is added is known. However, in these resin molded plates, the above-mentioned fibers play a role of a reinforcing material to improve the mechanical strength, but the conductivity is insufficient, and when used as an electrode, it is easy to become unable to conduct electricity, and the life is prolonged. It was short. Also, a carbon fiber / carbon composite material obtained by firing a carbon fiber reinforced resin molded plate is known, which has high mechanical strength and high conductivity, and is less consumed by energization, but requires a firing step. Therefore, the production cost is increased, and the mechanical strength is insufficient for some applications. [0004] In addition, a woven fabric or felt made of carbon fiber is formed on the surface of the synthetic resin molded plate to which the conductive filler is added.
Alternatively, a conductive material to which a resin paste containing a conductive powder is adhered is known (Japanese Patent Publication No. 3-58149, Japanese Patent Application Laid-Open No. Sho 58-166050, and Japanese Patent Application Laid-Open No. Sho 60-22).
In this case, too, there is a problem that the conductivity is not sufficient. SUMMARY OF THE INVENTION [0005] The present invention is to provide a resin molded plate containing a conductive filler such as carbon fiber and the like by integrally providing a surface layer made of carbon particles on the surface thereof. A conductive plate-shaped molded product that has excellent strength, is suitable for electrodes, etc. due to low power consumption, and is also excellent in corrosion resistance and workability, has high flexibility in size and shape, and can be manufactured at low cost. Is provided. According to the present invention, a surface layer made of carbon particles is integrally formed on at least one surface of a plate-shaped resin substrate having conductivity and excellent mechanical strength. The plate-shaped resin base material is made of a thermosetting resin or a thermoplastic resin containing carbon fibers and / or metal fibers, and the plate-shaped resin base material has a volume resistivity of 1 in the thickness direction.
Less than 0 Ω · cm, and its bending strength is 5 kg / mm 2 or more,
A conductive plate-like molded product characterized in that the surface layer composed of the carbon particles is composed of a granular or crushed substance of carbon or graphite and has a diameter of 0.5 to 5 mm. The method for producing the conductive plate-shaped molded product of the present invention is not particularly limited, but is produced by a method according to a general method for producing a plate-shaped molded product of a thermoplastic resin or a thermosetting resin. can do. For example, it can be manufactured by a method in which a required amount of carbon particles are uniformly placed in a required mold, a sheet-like resin base material is placed thereon, and hot pressing is performed. In the obtained conductive plate-shaped molded product, both the plate-shaped resin substrate and the surface layer are firmly integrated by impregnating the surface layer made of carbon particles with a part of the plate-shaped resin substrate. In addition, a plasticizer,
Additives such as stabilizers, hardeners, internal mold release agents and low shrinkage agents, or conductive fillers of powders such as graphite and metal can be added. In addition, a reinforcing material, a conductivity-imparting material, an adhesive, or the like can be added to the surface layer made of carbon particles.
The thickness of the surface layer composed of the carbon particles can be set in accordance with the performance and mechanical strength required when used as an electrode. % Is preferred, and if it is less than 20%, the desired current-carrying characteristics are difficult to obtain, and if it exceeds 80%, the mechanical strength decreases. In addition, a woven fabric, a knitted fabric, or the like of a reinforcing fiber can be inserted or added to the conductive plate-shaped molded product of the present invention in order to further increase the mechanical strength. The conductive plate-like molded product of the present invention comprises a plate-like resin base material containing carbon fibers and metal fibers and having excellent conductivity and mechanical strength, and a surface layer made of carbon particles. Since it is integrally molded, when it is used for an electrode such as an electrolysis tank with its surface layer side as a counter electrode surface, it exhibits excellent performance as an electrode, such as a low current consumption rate and a long life. The reason has not been fully elucidated, but is presumed to be that the carbon particles on the counter electrode surface are composed of the fine particles or crushed materials described above, and that a large surface area is advantageous for an electrochemical reaction. You. On the other hand, since the plate-shaped resin substrate plays a role of maintaining mechanical strength while having conductivity, the above-mentioned conductive plate-shaped molded article is excellent in both conductivity and mechanical strength.
A long-life, high-performance electrode with little consumption during energization. In addition, since the carbon particles and the resin component are integrally molded, they are excellent in corrosion resistance and workability, and can be easily and inexpensively manufactured to have any size and shape as a conductive plate-like molded product. . However, the diameter of the carbon particles in the surface layer is 0.5
If it is less than mm, it is unsuitable because it easily falls off during molding or during use. Conversely, if the diameter exceeds 5 mm, the effect of reducing the current consumption rate is poor. Further, when the volume specific resistance value in the thickness direction of the plate-shaped resin base material is 10 Ωcm or more, the conductivity in the thickness direction of the conductive plate-shaped molded product is insufficient, and a satisfactory electrode or the like is obtained. Absent. When the bending strength of the plate-shaped resin base material is less than 5 kg / mm 2 , the mechanical strength of the conductive plate-shaped molded product becomes insufficient and cannot be used for applications requiring strength. EXAMPLE 1 100 parts of unsaturated polyester resin, 50 parts of PAN-based carbon fiber chopped fiber (average fiber length: 6 mm), 100 parts of graphite powder and 2 parts of a curing agent are kneaded, and a sheet having a thickness of 4 mm is formed. A resin substrate was prepared. On the other hand, an average particle size of 2 mm
Is uniformly placed so that the weight per unit area is about 0.4 g / cm 2 , and the above-mentioned sheet-shaped resin base material is placed thereon, and the temperature is 145 ° C., the pressure is 60 kg / cm 2 , and the time is 10
For about 6 mm to obtain a conductive plate-like molded product having a thickness of about 6 mm. Example 2 A granular graphite having an average particle size of 4 mm was uniformly placed in a mold so that the weight per unit area was about 0.4 g / cm 2, and the sheet-like resin of Example 1 was placed thereon. Place the base material, and further stack one carbon fiber plain woven fabric, at a temperature of 145 ° C and a pressure of 60 kg / c.
Heat pressing was performed for 10 minutes at m 2 to produce a conductive plate-like molded product having a thickness of about 6 mm. Comparative Example 1 A carbon thin plate having a thickness of 2 mm was placed in a mold, and Example 1 was placed thereon.
145 ° C, pressure 60kg
/ Cm 2 for 10 minutes to produce a conductive plate-like molded product having a thickness of about 6 mm. Comparative Example 2 The sheet-like resin substrate of Example 1 (with a thickness of 6
mm) alone at a temperature of 145 ° C. and a pressure of 60 kg / cm.
2. A hot press was performed for 10 minutes to obtain a conductive plate-like molded product. With respect to the conductive plate-shaped molded articles of Examples 1 and 2 and Comparative Examples 1 and 2, the volume resistivity, bending strength, and current consumption rate as an electrode were measured by the following methods.
Table 1 shows the measurement results. In addition, when the conductive plate-shaped molded product of Example 1 was perforated, it could be easily processed without any dropout or the like. The method of measuring the volume specific resistance value is as follows. A test piece having a length of 100 mm, a width of 10 mm, and a thickness of 6 mm is prepared, and silver paste is applied to both end surfaces in the longitudinal direction. Was measured by a four-terminal method using a digital multimeter (YOKOGAWA 7552, manufactured by Yokogawa Electric Corporation). The value in the thickness direction of the plate is
Test pieces having a length of 10 mm, a width of 10 mm, and a thickness of 6 mm were prepared, silver paste was applied to both upper and lower surfaces, and the resistance between them was measured as described above. However, in the table, A is a value in the direction along the plate surface, and B is a value in the thickness direction. Measurement of Flexural Strength The flexural strength was measured according to the three-point bending method of JIS K7074 “Bending test method of carbon fiber reinforced plastic”. In the test piece composed of the surface layer and the resin substrate, the measured values when the surface layer was supported and pressure was applied from the resin substrate side are shown in Table 1. Test method for power consumption rate as electrodes Two conductive plate-like molded articles were placed facing each other at an interval of 10 mm as electrodes in a tank in which an aqueous solution of sodium chloride 1.5 g / liter was circulated. For those having a surface layer, the surface layer is opposed to the surface layer). The weight loss of the electrode plate when a direct current having a current density of 30 mA / cm 2 is continuously applied for 70 hours by constant current control is measured, and the current consumption rate is measured. I asked. Table 1 Volume resistivity (Ω · cm) Bending strength Current consumption rate AB (kg / mm 2 ) (g / AH) Example 1 0.011 0.20 5.8 0.053 Example 20 0.0009 0.23 6.2 0.064 Comparative Example 1 0.004 0.12 6.5 0.085 Comparative Example 2 0.039 0.45 9.5 No power supply in 10 hours Table 1 above As is clear from FIG.
Is composed of only a plate-shaped resin base material containing carbon fibers, and is a plate-shaped material of a carbon fiber-containing resin alone having no surface layer, so the bending strength is high, but the conductivity is inferior. Power cannot be supplied. In Examples 1 and 2 of the present invention in which granular graphite having an average particle size of 2 or 4 mm was integrally formed on the same plate-shaped resin substrate as in Comparative Example 2, the volume resistivity in the thickness direction was low. , High bending strength, low current consumption rate, and excellent performance as an electrode. On the other hand, Comparative Example 1 uses plate carbon instead of carbon particles as the surface layer, and thus has substantially no difference in conductivity and mechanical strength from Examples 1 and 2, but has a high current consumption rate and has a high current consumption rate. The durability was inferior to those of Examples 1 and 2. The conductive plate-shaped molded article of the present invention is formed by integrally forming a plate-shaped resin substrate having conductivity and excellent mechanical strength and a surface layer made of carbon particles. Therefore, as described above, both the conductivity and the mechanical strength are excellent, and when used as an electrode, there is little wear due to energization and the device can be used for a long time. In addition, since the carbon particles and the plate-shaped resin base material can be integrally molded by using a mold, the degree of freedom in size and shape is large, and the workability such as drilling and cutting is smaller than that of the carbon material. high. Further, since firing is not required, the production cost can be reduced, and the electrode is particularly useful as an electrode requiring mechanical strength.
フロントページの続き (72)発明者 垣内 雅之 大阪府大阪市北区堂島浜一丁目２番６号 東洋化成工業株式会社内 (56)参考文献 特開 平６−218863（ＪＰ，Ａ) 特開 昭60−221909（ＪＰ，Ａ) 特開 昭59−218842（ＪＰ，Ａ) 特公 平３−58149（ＪＰ，Ｂ２) (58)調査した分野(Int.Cl.7，ＤＢ名) B32B 1/00 - 35/00 C25B 11/00 - 11/20 H01M 4/00 - 4/62 Continuation of the front page (72) Inventor Masayuki Kakiuchi 1-2-6 Dojimahama, Kita-ku, Osaka-shi, Osaka Toyo Kasei Kogyo Co., Ltd. (56) References JP-A-6-218863 (JP, A) JP-A-60 -221909 (JP, A) JP-A-59-218842 (JP, A) JP 3-58149 (JP, B2) (58) Fields investigated (Int. Cl. 7 , DB name) B32B 1/00- 35/00 C25B 11/00-11/20 H01M 4/00-4/62
Claims (1)
板状樹脂基材の少なくとも片面に炭素粒子からなる表面
層が一体に成形されており、上記板状樹脂基材が炭素繊
維および／または金属繊維を含有する熱硬化性樹脂また
は熱可塑性樹脂からなり、この板状樹脂基材の厚み方向
の体積固有抵抗値が１０Ω・cm未満、その曲げ強度が５
kg／mm2 以上であり、上記の炭素粒子からなる表面層が
炭素または黒鉛の粒状物または破砕物からなり、その直
径が０．５〜５mmであることを特徴とする導電性板状成
形品。(57) [Claims 1] A surface layer made of carbon particles is integrally formed on at least one surface of a plate-shaped resin substrate having conductivity and excellent mechanical strength, The plate-shaped resin substrate is made of a thermosetting resin or a thermoplastic resin containing carbon fibers and / or metal fibers, and the volume specific resistance in the thickness direction of the plate-shaped resin substrate is less than 10 Ω · cm, and the bending thereof. Strength 5
kg / mm 2 or more, wherein the surface layer made of carbon particles is made of granulated or crushed carbon or graphite, and has a diameter of 0.5 to 5 mm. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP07634693A JP3421771B2 (en) | 1993-03-09 | 1993-03-09 | Conductive plate-shaped molded product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP07634693A JP3421771B2 (en) | 1993-03-09 | 1993-03-09 | Conductive plate-shaped molded product |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06255015A JPH06255015A (en) | 1994-09-13 |
| JP3421771B2 true JP3421771B2 (en) | 2003-06-30 |
Family
ID=13602804
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP07634693A Expired - Fee Related JP3421771B2 (en) | 1993-03-09 | 1993-03-09 | Conductive plate-shaped molded product |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3421771B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9506715D0 (en) * | 1995-03-31 | 1995-05-24 | Solatrim Ltd | Improved additive |
-
1993
- 1993-03-09 JP JP07634693A patent/JP3421771B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06255015A (en) | 1994-09-13 |
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