JPH0819353B2 - Conductive coating composition - Google Patents
Conductive coating compositionInfo
- Publication number
- JPH0819353B2 JPH0819353B2 JP61038896A JP3889686A JPH0819353B2 JP H0819353 B2 JPH0819353 B2 JP H0819353B2 JP 61038896 A JP61038896 A JP 61038896A JP 3889686 A JP3889686 A JP 3889686A JP H0819353 B2 JPH0819353 B2 JP H0819353B2
- Authority
- JP
- Japan
- Prior art keywords
- acrylic resin
- fine powder
- conductive
- coating composition
- conductive fine
- 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 - Lifetime
Links
- 239000008199 coating composition Substances 0.000 title claims description 10
- 239000000843 powder Substances 0.000 claims description 22
- 239000004925 Acrylic resin Substances 0.000 claims description 20
- 229920000178 Acrylic resin Polymers 0.000 claims description 20
- 239000002253 acid Substances 0.000 claims description 9
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 claims description 8
- 229910001887 tin oxide Inorganic materials 0.000 claims description 8
- 239000011230 binding agent Substances 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 description 16
- 238000000576 coating method Methods 0.000 description 16
- 238000000034 method Methods 0.000 description 13
- 239000004033 plastic Substances 0.000 description 12
- 239000011347 resin Substances 0.000 description 6
- 229920005989 resin Polymers 0.000 description 6
- 239000002184 metal Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 229910052787 antimony Inorganic materials 0.000 description 2
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 2
- 239000006229 carbon black Substances 0.000 description 2
- 238000004040 coloring Methods 0.000 description 2
- 239000011231 conductive filler Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 2
- 238000004898 kneading Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 239000004094 surface-active agent Substances 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 1
- NTIZESTWPVYFNL-UHFFFAOYSA-N Methyl isobutyl ketone Chemical compound CC(C)CC(C)=O NTIZESTWPVYFNL-UHFFFAOYSA-N 0.000 description 1
- UIHCLUNTQKBZGK-UHFFFAOYSA-N Methyl isobutyl ketone Natural products CCC(C)C(C)=O UIHCLUNTQKBZGK-UHFFFAOYSA-N 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000000149 argon plasma sintering Methods 0.000 description 1
- 238000007611 bar coating method Methods 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000004528 spin coating Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Paints Or Removers (AREA)
- Conductive Materials (AREA)
Description
【発明の詳細な説明】 （イ）産業上の利用分野 本発明は導電性塗料組成物に関するもので、詳しくは
分散性に優れ、プラスチック成形物に塗膜を形成した場
合、透明性が良好で外観を殆ど損なわず且つ耐熱性、耐
湿性、密着性に優れた導電性塗料組成物に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a conductive coating composition, and in particular, it has excellent dispersibility and shows good transparency when a coating film is formed on a plastic molded product. The present invention relates to a conductive coating composition which hardly deteriorates the appearance and is excellent in heat resistance, moisture resistance and adhesion.
（ロ）従来の技術 電気・電子産業においては、静電気により障害を受け
易い機器、部品及び素子が多い。(B) Conventional technology In the electric and electronic industries, there are many devices, parts and elements that are easily damaged by static electricity.
これら障害には、摩擦電気の帯電による複写機及びプ
リンターの紙詰まり、半導体素子の静電破壊等が挙げら
れる。These obstacles include paper jams in copiers and printers due to triboelectric charging, electrostatic breakdown of semiconductor elements, and the like.
静電気によるプラスチック製品等の障害を防止するに
は、プラスチック製品、例えばこれら部品及び容器等の
導電化、人体に蓄積される電荷の放出等に留意する必要
がある。In order to prevent damage to plastic products and the like due to static electricity, it is necessary to pay attention to plastic products, for example, to make these parts and containers electrically conductive, and to release charges accumulated in the human body.
プラスチック製部品及び容器（以下、プラスチック成
形物と呼称する）に導電性を付与するには、（１）プラ
スチック成形物に界面活性剤を塗布する方法、（２）カ
ーボンブラック、金属粉及び金属繊維等の導電性フィラ
ーを樹脂に練込みプラスチック成形物を得る方法、
（３）プラスチック成形物に銀、銅及びニッケル等を含
有する導電性塗料を塗布する方法等が挙げられる。To impart conductivity to plastic parts and containers (hereinafter referred to as plastic molded products), (1) a method of applying a surfactant to the plastic molded products, (2) carbon black, metal powder and metal fibers A method of kneading a conductive filler such as a resin into a resin to obtain a plastic molded product,
(3) A method of applying a conductive coating material containing silver, copper, nickel or the like to a plastic molded product may be used.
又、（３）の方法の改良技術として特開昭57−85866
号公報等が知られている。Further, as an improved technique of the method (3), JP-A-57-85866 is used.
Publications and the like are known.
（ハ）発明が解決しようとする問題点 プラスチック成形物に界面活性剤を塗布する方法は、
効果に持続性がなくその導電性発現が水によるイオン伝
導によっているため湿度の影響を受け易い。(C) Problems to be solved by the invention The method for applying a surfactant to a plastic molded article is
The effect is not lasting, and its conductivity is expressed by ionic conduction by water, so it is easily affected by humidity.
又、カーボンブラック、金属粉及び金属繊維等の導電
性フィラーを樹脂に練込みプラスチック成形物を得る方
法及びプラスチック成形物に銀、銅及びニッケル等を含
有する導電性塗料を塗布する方法は、プラスチック成形
物の着色が避けられず用途によっては商品価値が全くな
くなる場合がある。Further, a method of kneading a conductive filler such as carbon black, metal powder and metal fiber into a resin to obtain a plastic molded product and a method of applying a conductive coating material containing silver, copper, nickel and the like to the plastic molded product are Coloring of molded articles cannot be avoided, and the commercial value may be lost depending on the application.
又、特開昭57−85866号公報では、プラスチック成形
物の着色がなく透明な塗膜を得るために、酸化錫を主成
分とする導電性微粉末を使用している。Further, in JP-A-57-85866, conductive fine powder containing tin oxide as a main component is used in order to obtain a transparent coating film without coloring of a plastic molded product.
しかしながら、透明な塗膜を得るには導電性微粉末が
バインター樹脂中に充分分散するという条件が更に必要
とされ、この方法も全ての樹脂バインダーに適用するこ
とはできない。However, in order to obtain a transparent coating film, the condition that the conductive fine powder is sufficiently dispersed in the binder resin is further required, and this method cannot be applied to all resin binders.
（ニ）問題点を解決するための手段 本発明者らは、上述の問題点を解決すべく鋭意努力し
た結果本発明を完成したものである。(D) Means for Solving Problems The present inventors have completed the present invention as a result of diligent efforts to solve the above problems.
即ち、本発明は酸価が５以上のアクリル樹脂バインダ
ー（以下、アクリル樹脂と呼称する）と平均粒径が0.2
μｍ以下の酸化錫を主成分とする導電性微粉末（以下、
導電性微粉末と呼称する）よりなる導電性塗料組成物に
関するものである。That is, in the present invention, an acrylic resin binder having an acid value of 5 or more (hereinafter referred to as an acrylic resin) and an average particle size of 0.2
Conductive fine powder mainly composed of tin oxide having a size of μm or less (hereinafter,
(Referred to as conductive fine powder)).
アクリル樹脂としては、アクリル酸とメタクリル酸の
共重合体が特に好ましい。As the acrylic resin, a copolymer of acrylic acid and methacrylic acid is particularly preferable.
本発明に使用されるアクリル樹脂は酸価が５以上であ
る必要があり、アクリル樹脂の酸価が５未満では酸化錫
を主成分とする導電性微粉末の分散が不充分で得られる
塗膜は透明性が劣り曇りガラス状を呈する。The acrylic resin used in the present invention needs to have an acid value of 5 or more. When the acrylic resin has an acid value of less than 5, the conductive fine powder containing tin oxide as a main component is insufficiently dispersed, and a coating film obtained. Has poor transparency and has a frosted glassy appearance.
アクリル樹脂の酸価が５以上で導電性微粉末の分散が
良く得られる塗膜の透明性が優れる理由は、親水性の導
電性微粉末表面にアクリル樹脂中のカルボキシル基が吸
着するため導電性微粉末の凝集が防止され、分散性が向
上すると考えられる。The reason why the acrylic resin has an acid value of 5 or more and the conductive fine powder is well dispersed and the transparency of the coating film is excellent is that the carboxyl group in the acrylic resin is adsorbed on the surface of the hydrophilic conductive fine powder. It is considered that the agglomeration of the fine powder is prevented and the dispersibility is improved.
又、導電性微粉末としては、酸化錫、アンチモン含有
酸化錫等が挙げられる。Examples of the conductive fine powder include tin oxide and antimony-containing tin oxide.
本発明に使用される導電性微粉末の粒径は、0.2μｍ
以下である必要があり、粒径が0.2μｍを越えると導電
性微粉末粒子とアクリル樹脂との屈折率の差及び塗膜表
面の凹凸による可視光線の散乱等が生じ塗膜の透明性が
損なわれる。The particle size of the conductive fine powder used in the present invention is 0.2 μm.
If the particle size exceeds 0.2 μm, the difference in the refractive index between the conductive fine powder particles and the acrylic resin and visible light scattering due to the irregularities on the surface of the coating may cause the transparency of the coating to be impaired. Be done.
更に、導電性微粉末／アクリル樹脂の重量比が１未満
であると、塗膜中での導電性微粉末間の接触が疎となり
充分な導電性が得られない。Further, if the weight ratio of conductive fine powder / acrylic resin is less than 1, the contact between the conductive fine powders in the coating film becomes sparse and sufficient conductivity cannot be obtained.
又、導電性微粉末／アクリル樹脂の重量比が４を越え
ると導電性は良好であるが塗膜の透明性が損なわれる。If the weight ratio of conductive fine powder / acrylic resin exceeds 4, the conductivity is good but the transparency of the coating film is impaired.
本発明の導電性組成物は、アクリル樹脂のアルコー
ル、エステル、ケトン及びエーテル等の有機溶剤溶液に
導電性微粉末を分散することにより調製することができ
る。The electrically conductive composition of the present invention can be prepared by dispersing electrically conductive fine powder in a solution of an acrylic resin in an organic solvent such as alcohol, ester, ketone and ether.
又、分散後に、更にアクリル樹脂を添加する所謂レッ
トダウン法を採用することもできる。It is also possible to employ a so-called letdown method in which an acrylic resin is further added after the dispersion.
導電性微粉末をアクリル樹脂中に分散する方法として
は、通常のサンドミル、ボールミル、アトライター、三
本ロール等を使用することができる。As a method for dispersing the conductive fine powder in the acrylic resin, a usual sand mill, ball mill, attritor, three rolls or the like can be used.
本発明の導電性組成物の塗布方法としては、バーコー
ト法、スプレー法及びスピンコート法等が挙げられる。Examples of the method for applying the conductive composition of the present invention include a bar coating method, a spraying method and a spin coating method.
（ホ）発明の効果 樹脂バインダーとして酸価が５以上のアクリル樹脂を
使用すると、導電性塗料組成物中の導電性微粉末の分散
性が向上するため、プラスチック成形物に塗膜を形成し
た場合得られる塗膜の透明性が良好で外観を殆ど損なわ
い。(E) Effect of the Invention When an acrylic resin having an acid value of 5 or more is used as the resin binder, the dispersibility of the conductive fine powder in the conductive coating composition is improved. The resulting coating film has good transparency and almost no deterioration in appearance.
又、得られる塗膜は耐熱性、耐湿性及び密着性に優れ
ている。Further, the obtained coating film is excellent in heat resistance, moisture resistance and adhesion.
（ヘ）実施例 次に、本発明について実施例を挙げて詳細に説明する
が、本発明はこれらに限定されるものではない。(F) Examples Next, the present invention will be described in detail with reference to Examples, but the present invention is not limited thereto.
実施例１ 酸価が10.5のアクリル樹脂（三菱レーヨンKK製、BR−
87）をメチルイソブチルケトンに溶解し固形分20重量％
のバインダー溶液を調製した。Example 1 Acrylic resin having an acid value of 10.5 (manufactured by Mitsubishi Rayon KK, BR-
87) dissolved in methyl isobutyl ketone, solid content 20% by weight
Was prepared.
このバインダー溶液30gにアンチモン含有酸化錫粉末
（三菱金属KK製、Ｔ−１）20gを添加しボールミルに仕
込み４時間分散させ導電性塗料組成物を得た。To 30 g of this binder solution, 20 g of antimony-containing tin oxide powder (T-1 manufactured by Mitsubishi Metals KK) was added and charged in a ball mill and dispersed for 4 hours to obtain a conductive coating composition.
この組成物を厚さ2mmのアクリル樹脂板に塗布乾燥
後、膜厚１μｍの塗膜を得た。This composition was applied to an acrylic resin plate having a thickness of 2 mm and dried to obtain a coating film having a thickness of 1 μm.
得られた塗膜の表面抵抗、全光線透過率及び曇価の測
定結果を表１に示す。Table 1 shows the measurement results of the surface resistance, total light transmittance and haze value of the obtained coating film.
実施例２ 分散時間を20時間とした他は、実施例１と同様にして
導電性塗料組成物を得た。Example 2 A conductive coating composition was obtained in the same manner as in Example 1 except that the dispersion time was 20 hours.
測定結果を表１に示す。The measurement results are shown in Table 1.
又、この塗膜の耐熱性、耐湿性及びヒートサイクル試
験を次の条件で行ったところ表面抵抗、全光線透過率、
曇価及び密着性には殆ど変化がなかった。The heat resistance, moisture resistance and heat cycle test of this coating film were performed under the following conditions: surface resistance, total light transmittance,
There was almost no change in haze and adhesion.
耐熱性:85℃、60日間 耐湿性:70℃、93％RH、60日間 密着性：クロスカット試験 ヒートサイクル試験：室温→85℃→室温→−30℃のサイ
クルにおいて、各温度で１時間放置するサイクルを計３
回行った。Heat resistance: 85 ℃, 60 days Humidity resistance: 70 ℃, 93% RH, 60 days Adhesion: Cross-cut test Heat cycle test: Room temperature → 85 ℃ → Room temperature → -30 ℃ 3 cycles in total
I went there.
実施例３ 酸価が７のアクリル樹脂（三菱レーヨンKK製、BR−11
6）を使用した他は、実施例１と同様にして導電性塗料
組成物を得た。Example 3 Acrylic resin having an acid value of 7 (manufactured by Mitsubishi Rayon KK, BR-11
A conductive coating composition was obtained in the same manner as in Example 1 except that 6) was used.
測定結果を表１に示す。 The measurement results are shown in Table 1.
比較例 酸価が２のアクリル樹脂（三菱レーヨンKK製、BR−8
3）を使用した他は、実施例１と同様にして導電性塗料
組成物を得た。Comparative Example Acrylic resin with acid value 2 (Mitsubishi Rayon KK, BR-8
A conductive coating composition was obtained in the same manner as in Example 1 except that 3) was used.
測定結果を表１に示す。 The measurement results are shown in Table 1.
Claims (2)
平均粒径が0.2μｍ以下の酸化錫を主成分とする導電性
微粉末よりなる導電性塗料組成物。1. A conductive coating composition comprising an acrylic resin binder having an acid value of 5 or more and a conductive fine powder containing tin oxide having an average particle diameter of 0.2 μm or less as a main component.
リル樹脂バインダーの重量比が１〜４であることを特徴
とする特許請求の範囲第１項の導電性塗料組成物。2. The conductive coating composition according to claim 1, wherein the weight ratio of the conductive fine powder containing tin oxide as a main component and the acrylic resin binder is 1 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61038896A JPH0819353B2 (en) | 1986-02-24 | 1986-02-24 | Conductive coating composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61038896A JPH0819353B2 (en) | 1986-02-24 | 1986-02-24 | Conductive coating composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62197472A JPS62197472A (en) | 1987-09-01 |
| JPH0819353B2 true JPH0819353B2 (en) | 1996-02-28 |
Family
ID=12537965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61038896A Expired - Lifetime JPH0819353B2 (en) | 1986-02-24 | 1986-02-24 | Conductive coating composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0819353B2 (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59199778A (en) * | 1983-04-27 | 1984-11-12 | Mitsubishi Rayon Co Ltd | conductive paint |
| JPS6099173A (en) * | 1983-11-02 | 1985-06-03 | Sekisui Chem Co Ltd | Photocurable conductive coating composition |
| JPS6131475A (en) * | 1984-07-20 | 1986-02-13 | Sekisui Chem Co Ltd | Electrically conductive paint composition |
-
1986
- 1986-02-24 JP JP61038896A patent/JPH0819353B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62197472A (en) | 1987-09-01 |
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