JPS63248859A - Antistatic plastic material - Google Patents
Antistatic plastic materialInfo
- Publication number
- JPS63248859A JPS63248859A JP8263987A JP8263987A JPS63248859A JP S63248859 A JPS63248859 A JP S63248859A JP 8263987 A JP8263987 A JP 8263987A JP 8263987 A JP8263987 A JP 8263987A JP S63248859 A JPS63248859 A JP S63248859A
- Authority
- JP
- Japan
- Prior art keywords
- plastic material
- antistatic
- absorbing polymer
- water absorbing
- fine particles
- 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
Links
- 239000000463 material Substances 0.000 title claims abstract description 22
- 239000004033 plastic Substances 0.000 title claims abstract description 17
- 229920000247 superabsorbent polymer Polymers 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 8
- 229920000642 polymer Polymers 0.000 abstract description 6
- 239000010419 fine particle Substances 0.000 abstract description 3
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 abstract description 3
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 abstract description 3
- 238000004040 coloring Methods 0.000 abstract description 2
- 238000000465 moulding Methods 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 4
- 238000000034 method Methods 0.000 description 8
- 230000007423 decrease Effects 0.000 description 5
- 239000000126 substance Substances 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 125000001174 sulfone group Chemical group 0.000 description 2
- 239000004094 surface-active agent Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 208000028659 discharge Diseases 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、帯電対策が必要な部材に使用される帯電防止
プラスチック材料に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an antistatic plastic material used for members requiring antistatic measures.
従来、帯電防止を目的としたプラスチック材料を製造す
る方法としては、大別して、炭素、金属等の導電性物質
の粉末繊維等を混入する方法、界面活性剤等の吸湿性物
質を混入する方法、プラスチック材料のポリマー構造中
にスルホン基（−ＳＯ３）等の親水基を導入する方法の
２つが採られている。Conventionally, methods for manufacturing plastic materials for the purpose of preventing static electricity are broadly divided into methods of mixing powdered fibers of conductive substances such as carbon and metals, methods of mixing hygroscopic substances such as surfactants, Two methods have been adopted: introducing hydrophilic groups such as sulfone groups (-SO3) into the polymer structure of plastic materials.
しかしながら上記各方法にあって、まず第１の方法は、
混入する物質固有の色により着色され、１色の自由度が
小さくなる。物質混入によシ成形時に必要なプラスチッ
ク材料の流動性が低下し、成形性が低下する。混入物質
とプラスチック材料との界面の結合力が弱く、強度特性
、特に衝撃強度が低下する。等の欠点があった。However, among the above methods, the first method is
It is colored by the unique color of the mixed substance, and the degree of freedom for one color is reduced. Contamination with substances reduces the fluidity of the plastic material required during molding, resulting in poor moldability. The bonding force at the interface between the contaminant and the plastic material is weak, resulting in a decrease in strength properties, especially impact strength. There were drawbacks such as.
また、上記第２の方法にあっては、低分子量の界面活性
剤を混入することにより可塑化効果が働き、特に高温時
の強度が低下するなど、強度特性が低下する。材料表面
にある親水基が汚染等によシ劣下し易く、それにつれて
効果が薄れてしまうなど効果の持続性が比較的短時間で
ある。等の欠点を有する。In addition, in the second method, mixing a low molecular weight surfactant produces a plasticizing effect, resulting in a decrease in strength properties, such as a decrease in strength particularly at high temperatures. The hydrophilic groups on the surface of the material are susceptible to deterioration due to contamination, etc., and the effect fades over time, resulting in a relatively short-lasting effect. It has the following disadvantages.
そして、上記第３の方法は、親水基導入のために硫酸浸
漬（ＳＯ，基の場合）、高電圧放電処理（ＯＨ基の場合
）等が必要になシ、長時間の浸漬が必要であったり、形
状的な制約がある、など、プラスチック材料本来の生産
性の良さがなくなってしまうという欠点がある。The third method described above does not require immersion in sulfuric acid (for SO groups), high voltage discharge treatment (for OH groups), etc. to introduce hydrophilic groups, and requires long immersion. However, there are disadvantages in that the inherent productivity of plastic materials is lost, such as the fact that plastic materials are difficult to manufacture and have shape limitations.
本発明は上記のような実情に鑑みてなされたもので、上
記各種の欠点を打開し、確実な帯電防止を実行すること
のできる帯電防止プラスチック材料を提供することを目
的とする。The present invention was made in view of the above-mentioned circumstances, and an object of the present invention is to overcome the various drawbacks mentioned above and provide an antistatic plastic material that can reliably prevent static electricity.
本発明は、通常のプラスチック材料Ｋ例えばポリアクリ
ル酸ナトリウムのような非常に吸水能の高い、いわゆる
、高吸水性ポリマーの微粒子を分散させるようにしたも
のである。In the present invention, fine particles of a so-called super-absorbent polymer having a very high water-absorbing capacity, such as a common plastic material K, such as sodium polyacrylate, are dispersed.
上記のようにすれば、プラスチック材料中に分散してい
る高吸水ポリマーが大気中の水分を吸収し、その結果、
材料表面の固有抵抗値が大幅に低下して帯電しない状態
となる。If you do the above, the super absorbent polymer dispersed in the plastic material will absorb moisture from the atmosphere, and as a result,
The specific resistance value of the material surface decreases significantly and it becomes uncharged.
以下本発明の一実施例を説明する。 An embodiment of the present invention will be described below.
まず、ポリプロピレンに０．５ｗｔ％のポリアクリル酸
ナトリウム架橋体（平均粒径５０μｍ）を混合し、圧縮
成形により平板を形成する。この平板を２０℃、４０Ｒ
）（％下で表面固有抵抗値を測定すると、１Ｘ１ｏ
ＣΩ〕となり、同様の方法で炸裂した４リグロビレンだ
けの平板の表面固有抵抗値５Ｘ１０１５〔Ω〕に比較し
、大幅に低下し、帯電防止効果を持つようになる。First, 0.5 wt % of a crosslinked sodium polyacrylate (average particle size: 50 μm) is mixed with polypropylene, and a flat plate is formed by compression molding. This flat plate was heated at 20℃ and 40R.
) (When measuring the surface resistivity value under %, it is 1X1o
CΩ], which is significantly lower than the surface resistivity value of 5×1015 [Ω] of a flat plate of only 4-liglobilene exploded in the same manner, and has an antistatic effect.
以上に述べたように本発明によれば、母材となるプラス
チック材料中に分散させた吸水性ポリマーが大気中の水
分を吸収し、その結果、材料の表面固有抵抗値が著しく
低下することにより帯電を防止させるようにしたので、
着色の自由度、生産性に制限を与えることなく、成形性
、強度特性及び帯電防止効果の持続性等の優れた帯電防
止プラスチック材料を提供することができる。As described above, according to the present invention, the water-absorbing polymer dispersed in the base plastic material absorbs moisture from the atmosphere, and as a result, the surface resistivity value of the material decreases significantly. Since it was designed to prevent static electricity,
It is possible to provide an antistatic plastic material with excellent moldability, strength characteristics, and durability of antistatic effect without limiting the degree of freedom in coloring and productivity.
Claims (1)
とする帯電防止プラスチック材料。An antistatic plastic material characterized by adding and dispersing a super absorbent polymer into the material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8263987A JPS63248859A (en) | 1987-04-03 | 1987-04-03 | Antistatic plastic material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8263987A JPS63248859A (en) | 1987-04-03 | 1987-04-03 | Antistatic plastic material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63248859A true JPS63248859A (en) | 1988-10-17 |
Family
ID=13780000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8263987A Pending JPS63248859A (en) | 1987-04-03 | 1987-04-03 | Antistatic plastic material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63248859A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1616217A2 (en) * | 2003-03-27 | 2006-01-18 | E Ink Corporation | Electro-optic assemblies |
-
1987
- 1987-04-03 JP JP8263987A patent/JPS63248859A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1616217A2 (en) * | 2003-03-27 | 2006-01-18 | E Ink Corporation | Electro-optic assemblies |
| JP2006521586A (en) * | 2003-03-27 | 2006-09-21 | イー−インク コーポレイション | Electro-optic assembly |
| EP1616217A4 (en) * | 2003-03-27 | 2007-04-11 | E Ink Corp | Electro-optic assemblies |
| EP2273307A1 (en) * | 2003-03-27 | 2011-01-12 | E Ink Corporation | Electro-optic displays |
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