JPH04133937A - Rubber roll having low hardness and conductivity - Google Patents
Rubber roll having low hardness and conductivityInfo
- Publication number
- JPH04133937A JPH04133937A JP2259790A JP25979090A JPH04133937A JP H04133937 A JPH04133937 A JP H04133937A JP 2259790 A JP2259790 A JP 2259790A JP 25979090 A JP25979090 A JP 25979090A JP H04133937 A JPH04133937 A JP H04133937A
- Authority
- JP
- Japan
- Prior art keywords
- rubber
- hardness
- rubber roll
- low
- low hardness
- 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
- 229920001971 elastomer Polymers 0.000 title claims abstract description 72
- 239000005060 rubber Substances 0.000 title claims abstract description 72
- 239000000203 mixture Substances 0.000 claims abstract description 24
- 239000004020 conductor Substances 0.000 claims abstract description 12
- 238000004132 cross linking Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 239000006229 carbon black Substances 0.000 abstract description 3
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 244000043261 Hevea brasiliensis Species 0.000 description 3
- 239000005062 Polybutadiene Substances 0.000 description 3
- 229920003052 natural elastomer Polymers 0.000 description 3
- 229920001194 natural rubber Polymers 0.000 description 3
- 239000004014 plasticizer Substances 0.000 description 3
- 229920002857 polybutadiene Polymers 0.000 description 3
- LIKMAJRDDDTEIG-UHFFFAOYSA-N 1-hexene Chemical compound CCCCC=C LIKMAJRDDDTEIG-UHFFFAOYSA-N 0.000 description 2
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- 229920005549 butyl rubber Polymers 0.000 description 2
- 239000004917 carbon fiber Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 150000001451 organic peroxides Chemical class 0.000 description 2
- 150000002978 peroxides Chemical class 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 230000000379 polymerizing effect Effects 0.000 description 2
- 229920003051 synthetic elastomer Polymers 0.000 description 2
- 239000005061 synthetic rubber Substances 0.000 description 2
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- 101000645318 Drosophila melanogaster Titin Proteins 0.000 description 1
- 229920000181 Ethylene propylene rubber Polymers 0.000 description 1
- -1 Ketschen black Substances 0.000 description 1
- 229920006311 Urethane elastomer Polymers 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000003712 anti-aging effect Effects 0.000 description 1
- CHIHQLCVLOXUJW-UHFFFAOYSA-N benzoic anhydride Chemical compound C=1C=CC=CC=1C(=O)OC(=O)C1=CC=CC=C1 CHIHQLCVLOXUJW-UHFFFAOYSA-N 0.000 description 1
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000006231 channel black Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- HQQADJVZYDDRJT-UHFFFAOYSA-N ethene;prop-1-ene Chemical group C=C.CC=C HQQADJVZYDDRJT-UHFFFAOYSA-N 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000006232 furnace black Substances 0.000 description 1
- 229920002681 hypalon Polymers 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 229920003049 isoprene rubber Polymers 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920001084 poly(chloroprene) Polymers 0.000 description 1
- 229920000636 poly(norbornene) polymer Polymers 0.000 description 1
- 239000012744 reinforcing agent Substances 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 238000001721 transfer moulding Methods 0.000 description 1
- 150000003623 transition metal compounds Chemical class 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
Landscapes
- Paper Feeding For Electrophotography (AREA)
- Delivering By Means Of Belts And Rollers (AREA)
- Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、低硬度かつ導電性のゴムロール、例えば複写
機、ファクシミリ、プリンター、レコーダーなどの事務
用機器の紙送り装置に紙葉類搬送用ゴムロールとして良
好なゴムロールに関するものである。[Detailed Description of the Invention] [Field of Industrial Application] The present invention is a low-hardness and conductive rubber roll, for example, for use in paper feeding devices of office equipment such as copying machines, facsimiles, printers, and recorders for conveying paper sheets. This invention relates to a rubber roll that is good as a rubber roll.
複写機、ファクシミリ、プリンター、レコーダーなどの
事務用機器では、紙葉類を搬送する紙送り装置に紙葉類
搬送用ゴムロールが使用されている。このような紙葉類
搬送用ゴムロールに用いるゴム組成物は、低硬度、低電
気抵抗であるのが望ましい。ここで、低硬度は紙葉類搬
送において高摩擦係数を維持し、紙葉類とゴムロールと
のスリップ等の搬送不良発生を防止するための重要な要
素である。また、低電気抵抗は紙葉類とゴムロールとの
摩擦においてゴムロール表面に摩擦帯電が生じてゴムロ
ール表面に紙葉類の巻き付き、紙粉の付着等による搬送
不良発生を防止するための重要な要素である。また、紙
葉類への帯電は、電子写真の画像処理プロセスにおいて
、画像乱れなどの原因となることから低電気抵抗は帯電
防止としても必要である。2. Description of the Related Art In office equipment such as copying machines, facsimile machines, printers, and recorders, rubber rolls for transporting paper sheets are used in paper feeding devices that transport paper sheets. It is desirable that the rubber composition used for such a rubber roll for transporting paper sheets has low hardness and low electrical resistance. Here, low hardness is an important factor for maintaining a high coefficient of friction during paper sheet conveyance and preventing occurrence of conveyance defects such as slips between paper sheets and rubber rolls. In addition, low electrical resistance is an important factor to prevent paper sheets from wrapping around the rubber roll surface due to frictional charging on the rubber roll surface due to friction between the paper sheet and the rubber roll, and to prevent paper dust from adhering to the surface of the rubber roll and causing conveyance defects. be. Furthermore, since charging of paper sheets causes image disturbances in the image processing process of electrophotography, low electrical resistance is also necessary to prevent charging.
通常、低硬度のゴム組成物を得るには、シリコーンゴム
、ポリノルボルネンなどの合成ゴムあるいは天然ゴムに
、多量の軟化剤、可塑剤を添加するのが一般的である。Generally, in order to obtain a rubber composition with low hardness, a large amount of a softener or a plasticizer is generally added to synthetic rubber such as silicone rubber or polynorbornene, or natural rubber.
また、通常、ゴム組成物の電気抵抗を下げるには、カー
ボンブラック、ケッチンブラック、金属粉末、金属を表
面にコーティングした粉末、カーボン繊維などの導電性
材料を添加するのが一般的である。Further, in order to lower the electrical resistance of a rubber composition, it is common to add conductive materials such as carbon black, Kettin black, metal powder, powder coated with metal on the surface, and carbon fiber.
しかして、低硬度のゴム組成物を得る目的で、合成ゴム
あるいは天然ゴムに多量の軟化剤、可塑剤を添加すると
、これらは絶縁物であるため、電気抵抗が高くなり、低
電気抵抗のゴム組成物を得ることが困難であった。However, if a large amount of softener or plasticizer is added to synthetic rubber or natural rubber for the purpose of obtaining a rubber composition with low hardness, since these are insulators, the electrical resistance will increase, resulting in a rubber with low electrical resistance. It was difficult to obtain the composition.
また、ゴム組成物の電気抵抗を下げる目的で、導電性材
料を添加すると、硬度が高くなり、低硬度のゴム組成物
を得ることが困難であった。Furthermore, when a conductive material is added for the purpose of lowering the electrical resistance of a rubber composition, the hardness increases, making it difficult to obtain a rubber composition with low hardness.
このように、低硬度と低電気抵抗の双方を満たすゴム組
成物を得ることは非常に困難であった。As described above, it has been extremely difficult to obtain a rubber composition that satisfies both low hardness and low electrical resistance.
そこで、本発明は上記課題に鑑みてなされたもので、そ
の目的とするところは、低硬度と低電気抵抗の双方を満
たす低硬度かつ導電性のゴムロールを提供することにあ
る。Therefore, the present invention has been made in view of the above problems, and an object thereof is to provide a low hardness and conductive rubber roll that satisfies both low hardness and low electrical resistance.
上記目的を達成するため、本発明はポリヘキセンゴムの
単体あるいは他の所定のゴムとの混合体に導電性材料を
添加して架橋させたゴム組成物からなるものである。In order to achieve the above object, the present invention consists of a rubber composition in which a conductive material is added to polyhexene rubber alone or in a mixture with other predetermined rubbers and crosslinked.
上記ポリヘキセンゴム〔日本合成ゴム■製〕は、１−ヘ
キセンを遷移金属化合物と有機アルミニウム化合物とを
組合せた触媒系を用いて重合することにより得られたポ
リヘキセンを、有機過酸化物を用いて架橋することによ
り得られたものであり、その純ゴム架橋物性は硬度（Ｊ
Ｉ Ｓ Ｋ６３０１Ａｔｙｐｅ ）が１２ポイント
と従来のゴムに比べて極めて低いという特徴を有する。The above polyhexene rubber (manufactured by Nippon Gosei Rubber) is produced by polymerizing polyhexene, which is obtained by polymerizing 1-hexene using a catalyst system that combines a transition metal compound and an organoaluminum compound, using an organic peroxide. It is obtained by crosslinking, and its pure rubber crosslinked physical properties are hardness (J
IS K6301A type) is 12 points, which is extremely low compared to conventional rubber.
硬度が極めて低いポリヘキセンゴムを主成分として用い
たことにより、導電性材料を従来より多く添加しても硬
度があまり高くならず、低硬度、低電気抵抗のゴム組成
物を得ることができた。By using polyhexene rubber, which has extremely low hardness, as the main component, the hardness does not increase much even if a larger amount of conductive material is added than before, making it possible to obtain a rubber composition with low hardness and low electrical resistance. .
以下、本発明の詳細な説明する。 The present invention will be explained in detail below.
本発明に係る低硬度かつ導電性のゴムロールは、ポリヘ
キセンゴムの単体あるいは他の所定のゴムとの混合体で
組成し、このポリヘキセンゴムの単体あるいは他の所定
のゴムとの混合体に導電性材料を添加してトランスファ
ー成形、射出成形、プレス成形、押出し成形、蒸気圧成
形などにより架橋させてロール状に形成したものである
。但し、ポリヘキセンゴム単体では表面に貼着性がある
ので、紙葉類搬送用としては好ましくないが、これは他
の所定の一般ゴム（天然ゴム、イソプレンゴム、スチレ
ン・ブタジェンゴム・ブタジェンゴム、ブチルゴム、エ
チレン・プロピレンゴム、クロロブレンゴム、クロロス
ルホン化ポリエチレン、アクリルニトリル・ブタジェン
ゴム、ウレタンゴムなど）を適量にブレンドすることに
より表面粘着は改善される。ここで、一般ゴムはポリヘ
キセンゴムとの相溶性を考慮すると、ブタジェンゴム、
エチレン・プロピレンゴムが好ましく、ポリヘキセンゴ
ム単体あるいは他の所定のゴムとの混合体１００重量部
に対して５〜４５重量部添加するのが適当量である。一
般ゴムの添加量を５〜４５重量部が望ましいとしたのは
、５重量部以下では表面粘着の改善効果がなく、４５重
量部を越えると、低硬度のものが得られないからである
。The low hardness and conductive rubber roll according to the present invention is composed of polyhexene rubber alone or a mixture with other specified rubber, and the polyhexene rubber alone or the mixture with other specified rubber is conductive. It is formed into a roll by adding a plastic material and crosslinking it by transfer molding, injection molding, press molding, extrusion molding, steam pressure molding, etc. However, since polyhexene rubber alone has adhesive properties on the surface, it is not suitable for conveying paper sheets, but it cannot be used with other specified general rubbers (natural rubber, isoprene rubber, styrene/butadiene rubber, butyl rubber, butyl rubber, Surface adhesion can be improved by blending appropriate amounts of ethylene/propylene rubber, chloroprene rubber, chlorosulfonated polyethylene, acrylonitrile/butadiene rubber, urethane rubber, etc.). Here, considering the compatibility with polyhexene rubber, general rubber is butadiene rubber,
Ethylene-propylene rubber is preferred, and the appropriate amount is 5 to 45 parts by weight per 100 parts by weight of polyhexene rubber alone or a mixture with other specified rubbers. The reason why the amount of general rubber added is desirably 5 to 45 parts by weight is that if it is less than 5 parts by weight, there is no effect of improving surface adhesion, and if it exceeds 45 parts by weight, a product with low hardness cannot be obtained.
紙葉類を搬送するにあたって導電性材料（カーボンブラ
ック、ケッチエンブラック、金属粉末、金属を表面にコ
ーティングした粉末、カーボン繊維など）には、紙葉類
を汚染してしまうものがあり、抵抗値安定性、作業性、
加工性を考慮すると、カーボンブランク（チャンネルブ
ラック、ファーネスブラック）が好適である。その添加
量はポリヘキセンゴム単体あるいは他の所定のゴムとの
混合体１００重量部に対して５〜４０重量部添加するが
適当量である。導電性材料の添加量を５〜４０重量部が
望ましいとしたのは、５重量部以下では導電部材として
は不通であり、４０重量部を越えると、紙葉類を汚染し
てしまうからである。When transporting paper sheets, some conductive materials (carbon black, Ketschen black, metal powder, powder coated with metal, carbon fiber, etc.) may contaminate the paper sheets, and the resistance value may increase. stability, workability,
Considering processability, carbon blanks (channel black, furnace black) are suitable. The amount to be added is 5 to 40 parts by weight per 100 parts by weight of polyhexene rubber alone or a mixture with other specified rubbers, which is an appropriate amount. The reason why the amount of conductive material added is preferably 5 to 40 parts by weight is that if it is less than 5 parts by weight, it will not work as a conductive member, and if it exceeds 40 parts by weight, it will contaminate paper sheets. .
ポリヘキセンゴム単体あるいは他の所定のゴムとの混合
体に、導電性材料を添加して架橋させるにあたり用いら
れる有機過酸化物としては、過失息香酸、タルミパーオ
キサイド、ジクミルパーオキサイド、過酸化ベンソイル
などがあり、なかでもジクミルパーオキサイドが好適で
ある。Examples of organic peroxides used when adding a conductive material to polyhexene rubber alone or a mixture with other specified rubbers for crosslinking include olezoic acid, talmi peroxide, dicumyl peroxide, and peroxide. Examples include benzoyl oxide, among which dicumyl peroxide is preferred.
尚、上述した配合剤の他にも種々の充填剤、老化防止剤
、可塑剤、加硫促進剤、補強剤、顔料などをゴム物性に
悪影響を及ぼさない程度で添加しても良い。In addition to the above-mentioned compounding agents, various fillers, anti-aging agents, plasticizers, vulcanization accelerators, reinforcing agents, pigments, etc. may be added to the extent that they do not adversely affect the physical properties of the rubber.
第１表は、当該第１表に記載する配分にて組成した測定
試料（１）〜（９）について、硬度および電気抵抗につ
き測定した結果を示している。Table 1 shows the hardness and electrical resistance of measurement samples (1) to (9) composed according to the proportions shown in Table 1.
以下余白
尚、上記実施例は事務用機器の紙葉類搬送用ゴムロール
について述べているが、本発明は他の分野の低硬度かつ
導電性を有するゴムロールにも適用し得ることは云うま
でもない。Note: Although the above embodiment describes a rubber roll for transporting paper sheets in office equipment, it goes without saying that the present invention can also be applied to rubber rolls with low hardness and conductivity in other fields. .
本発明によれば、ポリヘキセンゴムを主成分とするゴム
組成物に導電性材料を添加することにより、紙葉類搬送
時のゴムロールおよび紙葉類の帯電を防止して搬送不良
、画像乱れの発生をなくするとともに、低硬度、低電気
抵抗のゴムロールが実現でき、信頼性の高い良品質で実
用的価値の大なるゴムロールを提供することができる。According to the present invention, by adding a conductive material to a rubber composition containing polyhexene rubber as a main component, charging of the rubber roll and paper sheets during paper sheet conveyance can be prevented, resulting in poor conveyance and image distortion. It is possible to eliminate the occurrence of generation, and to realize a rubber roll with low hardness and low electrical resistance, and it is possible to provide a rubber roll that is highly reliable, of high quality, and has great practical value.
Claims (2)
との混合体を架橋させたゴム組成物からなることを特徴
とする低硬度かつ導電性のゴムロール。(1) A low hardness and conductive rubber roll characterized by being made of a rubber composition obtained by crosslinking polyhexene rubber alone or a mixture with other specified rubbers.
との混合体に導電性材料を添加して架橋させたゴム組成
物からなることを特徴とする低硬度かつ導電性のゴムロ
ール。(2) A low hardness and conductive rubber roll characterized by being made of a rubber composition obtained by adding a conductive material to polyhexene rubber alone or a mixture with other specified rubbers and crosslinking them.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2259790A JPH04133937A (en) | 1990-09-27 | 1990-09-27 | Rubber roll having low hardness and conductivity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2259790A JPH04133937A (en) | 1990-09-27 | 1990-09-27 | Rubber roll having low hardness and conductivity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04133937A true JPH04133937A (en) | 1992-05-07 |
Family
ID=17339028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2259790A Pending JPH04133937A (en) | 1990-09-27 | 1990-09-27 | Rubber roll having low hardness and conductivity |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04133937A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6043308A (en) * | 1995-07-11 | 2000-03-28 | Nippon Zeon Co., Ltd. | Conductive rubber composition and process for the production thereof |
| CN115975300A (en) * | 2023-01-05 | 2023-04-18 | 京东橡胶有限公司 | Low-hardness rubber and preparation method and application thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS575071A (en) * | 1980-06-13 | 1982-01-11 | Showa Electric Wire & Cable Co Ltd | Production of nonelectrifiable roller |
| JPS582146A (en) * | 1981-06-24 | 1983-01-07 | Showa Electric Wire & Cable Co Ltd | Paper feed roller |
| JPS6178853A (en) * | 1984-09-26 | 1986-04-22 | Mitsubishi Petrochem Co Ltd | Roller for duplicator |
| JPS62275753A (en) * | 1986-02-12 | 1987-11-30 | Toray Ind Inc | Rotation body for feeding printing paper |
-
1990
- 1990-09-27 JP JP2259790A patent/JPH04133937A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS575071A (en) * | 1980-06-13 | 1982-01-11 | Showa Electric Wire & Cable Co Ltd | Production of nonelectrifiable roller |
| JPS582146A (en) * | 1981-06-24 | 1983-01-07 | Showa Electric Wire & Cable Co Ltd | Paper feed roller |
| JPS6178853A (en) * | 1984-09-26 | 1986-04-22 | Mitsubishi Petrochem Co Ltd | Roller for duplicator |
| JPS62275753A (en) * | 1986-02-12 | 1987-11-30 | Toray Ind Inc | Rotation body for feeding printing paper |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6043308A (en) * | 1995-07-11 | 2000-03-28 | Nippon Zeon Co., Ltd. | Conductive rubber composition and process for the production thereof |
| CN115975300A (en) * | 2023-01-05 | 2023-04-18 | 京东橡胶有限公司 | Low-hardness rubber and preparation method and application thereof |
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