JP3163805B2 - Low hardness rubber composition and paper sheet transport rubber roll - Google Patents
Low hardness rubber composition and paper sheet transport rubber rollInfo
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- JP3163805B2 JP3163805B2 JP32326792A JP32326792A JP3163805B2 JP 3163805 B2 JP3163805 B2 JP 3163805B2 JP 32326792 A JP32326792 A JP 32326792A JP 32326792 A JP32326792 A JP 32326792A JP 3163805 B2 JP3163805 B2 JP 3163805B2
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- weight
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- rubber
- rubber composition
- hardness
- Prior art date
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Description
【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION
【０００１】[0001]
【産業上の利用分野】本発明は低硬度ゴム組成物及びそ
れを被覆した紙葉搬送ゴムロールに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a low-hardness rubber composition and a paper-transporting rubber roll coated with the same.
【０００２】[0002]
【従来の技術】一般に、紙葉の分離、搬送ゴムロールで
は、紙の取込性、送り安定性、摩擦係数の安定性等の点
からＪＩＳ−Ｋ６３０１−Ａ硬度（以下、「ＪＩＳ−Ａ
硬度」という）が３５以下の低硬度ゴム材料が必要であ
る。2. Description of the Related Art In general, a rubber roll for separating and transporting a paper sheet has a JIS-K6301-A hardness (hereinafter referred to as "JIS-A") in terms of paper take-up, feeding stability, friction coefficient stability and the like.
A low-hardness rubber material having a hardness of 35 or less is required.
【０００３】現在、このような要求に応える低硬度ゴム
としてはポリノルボーネンゴムに多量のナフテン系オイ
ルを配合してなるゴム組成物を成形加硫して得られる加
硫ゴムが知られている。このポリノルボーネン系加硫ゴ
ムはＪＩＳ−Ａ硬度が低いにも拘らずゴム弾性、機械的
強度、耐摩耗性に優れた特性を有している反面、特殊な
ゴムであるため、安定供給性に欠けることが難点であ
る。At present, as a low-hardness rubber meeting such a demand, a vulcanized rubber obtained by molding and vulcanizing a rubber composition obtained by blending a large amount of naphthenic oil with polynorbornene rubber is known. . This polynorbornene-based vulcanized rubber has excellent rubber elasticity, mechanical strength, and abrasion resistance despite its low JIS-A hardness, but it is a special rubber, so it has a stable supply The difficulty is that it lacks.
【０００４】一方、汎用ゴム系加硫ゴム、例えば天然ゴ
ム、クロロプレンゴム、スチレンブタジエンゴム、エチ
レンプロピレンジエンゴム等の合成ゴムではＪＩＳ−Ａ
硬度が５０前後のものがゴム弾性、機械強度、耐摩耗性
等が優れていることが知られている。すなわち、機械的
補強効果の大きい補強剤、例えばカーボンブラック、炭
酸カルシウム、クレー等を比較的多量に配合してなるゴ
ム組成物を成形加硫して得られるこれらの加硫ゴムはＪ
ＩＳ−Ａ硬度、ゴム弾性、機械強度、耐摩耗性等がいず
れも向上するからである。On the other hand, general-purpose rubber vulcanized rubber, for example, synthetic rubber such as natural rubber, chloroprene rubber, styrene butadiene rubber, ethylene propylene diene rubber, etc. is JIS-A.
It is known that those having a hardness of about 50 are excellent in rubber elasticity, mechanical strength, wear resistance and the like. That is, these vulcanized rubbers obtained by molding and vulcanizing a rubber composition containing a relatively large amount of a reinforcing agent having a large mechanical reinforcing effect, for example, carbon black, calcium carbonate, clay, etc., are J
This is because the IS-A hardness, rubber elasticity, mechanical strength, wear resistance, and the like are all improved.
【０００５】他方、通常使用されているエラストマーと
しての塩素化ポリエチレンはその特性からＪＩＳ−Ａ硬
度で５０〜９０程度であり、この場合の可塑剤の添加量
は２５〜５０重量部の範囲である。そして、この範囲で
の架橋剤としては、パーオキサイド加硫、チオウレア加
硫、トリアジン加硫で物性上も通常の汎用ゴムと同等の
特性が得られる。On the other hand, chlorinated polyethylene as an elastomer generally used has a JIS-A hardness of about 50 to 90 due to its properties, and the amount of a plasticizer added in this case is in a range of 25 to 50 parts by weight. . As a crosslinking agent in this range, peroxide vulcanization, thiourea vulcanization, and triazine vulcanization provide properties equivalent to those of a general-purpose rubber in physical properties.
【０００６】[0006]
【発明が解決しようとする課題】ところで、ＪＩＳ−Ａ
硬度３５以下の汎用ゴム系加硫ゴムを得るためには多量
の可塑剤を添加することになるが、この場合には、ゴム
混練り等の加工性やゴム弾性、機械的強度、耐摩耗性等
の特性が著しく低下してしまうといった問題点があっ
た。However, JIS-A
In order to obtain a general-purpose rubber vulcanized rubber having a hardness of 35 or less, a large amount of a plasticizer is added. In this case, however, processability such as rubber kneading, rubber elasticity, mechanical strength, and abrasion resistance are required. However, there has been a problem that characteristics such as the above-mentioned properties are remarkably deteriorated.
【０００７】一方、塩素化ポリエチレンを低硬度化する
ためには、塩素化ポリエチレン１００重量部に対し、可
塑剤を１００重量部以上添加する必要があるが、このよ
うに低硬度化すると既に知られている加硫系では以下の
欠点が生ずる。On the other hand, in order to reduce the hardness of chlorinated polyethylene, it is necessary to add a plasticizer in an amount of 100 parts by weight or more based on 100 parts by weight of chlorinated polyethylene. Some vulcanizing systems have the following disadvantages.
【０００８】（１）パーオキサイド加硫：可塑剤８０重
量部以上では発泡が生じ成形品が得られない。(1) Peroxide vulcanization: When the plasticizer is more than 80 parts by weight, foaming occurs and a molded product cannot be obtained.
【０００９】（２）チオウレア加硫：加硫された成形品
が耐環境雰囲気中で可塑剤のブリードが生じる。(2) Thiourea vulcanization: Vulcanization of a vulcanized molded article occurs in a plasticizer in an environment resistant atmosphere.
【００１０】（３）トリアジン加硫：上記（１），
（２）の様な不具合は無いが、ローラとして重要な物性
である圧縮永久歪みが極端に低下し、また、コンプレッ
ションモールド等で加工性に重要な影響を与える引張強
さが低下するといった問題点がある。(3) Triazine vulcanization: The above (1),
Although there is no defect as in (2), there is a problem that the compression set, which is an important physical property of the roller, is extremely reduced, and the tensile strength, which has an important effect on the workability in a compression mold or the like, is reduced. There is.
【００１１】そこで、本発明はこの問題点を有効に解決
するために案出されたものであり、その目的は低硬度
で、かつゴム弾性、機械的強度、耐摩耗性及び圧縮歪
み、引張強さ等の材料特性に優れた新規な低硬度ゴム組
成物及び紙葉搬送ロールを提供するものである。The present invention has been devised in order to effectively solve this problem, and its object is to achieve low hardness, rubber elasticity, mechanical strength, wear resistance and compressive strain, and tensile strength. It is intended to provide a novel low-hardness rubber composition and a paper sheet transport roll excellent in material properties such as the hardness.
【００１２】[0012]
【課題を解決するための手段】上記課題を解決するため
の第一の発明は、塩素化ポリエチレン１００重量部に対
して、可塑剤を８０重量部以上配合してなるゴム組成物
において、該ゴム組生物に加硫促進剤としてジペンタメ
チレンテトラスルフィドとアクリル酸亜鉛塩とを併用添
加して成ることを特徴とする低硬度ゴム組生物であり、
さらに、第二の発明は、軸心材の外周上に加硫ゴムを被
覆してなる紙葉搬送ゴムロールにおいて、上記加硫ゴム
は、上記第一の発明の低硬度ゴム組成物のいずれかを成
形、加硫してなることを特徴とする紙葉搬送ゴムロール
である。Means for Solving the Problems A first invention for solving the above-mentioned problems is based on 100 parts by weight of chlorinated polyethylene.
And a rubber composition comprising a plasticizer in an amount of at least 80 parts by weight.
In the above, dipentame as a vulcanization accelerator
Combined use of Tylene tetrasulfide and zinc acrylate
A low-hardness rubber composition, characterized by being added
Further, a second invention is a paper sheet transport rubber roll in which a vulcanized rubber is coated on the outer periphery of a shaft core material, wherein the vulcanized rubber is any one of the low hardness rubber compositions of the first invention. It is a paper sheet transport rubber roll characterized by being formed and vulcanized.
【００１３】[0013]
【００１４】[0014]
【００１５】[0015]
【００１６】[0016]
【００１７】[0017]
【００１８】[0018]
【００１９】[0019]
【００２０】また、第一の発明で用いる塩素化ポリエチ
レンとしてはゴムとしての性質を有している塩素含有量
２５〜５０重量％のものであれば何等制約を受けない。
また、ポリエチレンの分子量が数万以上であればよい
が、好ましくは耐摩耗性の点から２０万以上が良い（ゴ
ム硬さ３０以下にするには多量に可塑剤添加で数万から
１０万のポリエチレン分子量では耐摩耗性が悪い）。ま
た、可塑剤はゴム、塩化ビニル等に通常使用されるフタ
ル酸エステル系及びアジピン酸エステル系可塑剤、トリ
メリット酸系可塑剤、ポリエステル系可塑剤や石油系軟
化剤が使用できる。また、ゴム組成物において勿論、充
填剤、補強剤、助剤、老化防止剤等が汎用ゴム、塩化ビ
ニル等の薬品が使用できる。アクリル酸亜鉛塩と、ジペ
ンタメチレンテトラスルフィドは併用することにより、
引張強度を上げ、圧縮ひずみを改良するものである。好
ましくは、アクリル酸亜鉛塩１ｐｈｒ、ジペンタメチレ
ンテトラスルフィド０．５ｐｈｒ併用比である。The chlorinated polyethylene used in the first invention is not subject to any restrictions as long as it has a rubber content of 25 to 50% by weight.
The polyethylene may have a molecular weight of at least tens of thousands, but is preferably at least 200,000 from the viewpoint of abrasion resistance. Poor wear resistance with polyethylene molecular weight). As the plasticizer, phthalate and adipic ester plasticizers, trimellitic acid plasticizers, polyester plasticizers and petroleum softeners commonly used for rubber, vinyl chloride and the like can be used. In the rubber composition, of course, chemicals such as general-purpose rubber and vinyl chloride can be used as a filler, a reinforcing agent, an auxiliary agent, an antioxidant, and the like. By using zinc acrylate and dipentamethylene tetrasulfide together,
It increases tensile strength and improves compression strain. The ratio is preferably 1 phr of zinc acrylate and 0.5 phr of dipentamethylenetetrasulfide.
【００２１】また、紙葉の分離、搬送に使用されるゴム
ローラはその機能上からゴムローラには一定の圧力がか
かる。このため、ゴムローラ材料特性の圧縮歪みは大事
な要因である。これが悪いと実用中ゴムローラが変形
し、紙葉を送らなくなる。Further, a certain pressure is applied to the rubber roller used for separating and transporting the paper sheet due to its function. For this reason, the compression distortion of the rubber roller material properties is an important factor. If this is bad, the rubber roller will be deformed during practical use, and the paper sheet will not be sent.
【００２２】一方、加工上からは、これらの製造法は圧
入ポット式による金型を用いたコンプレッションプレス
モールド法、インジェクション成形法が用いられる。こ
のため加工に耐えられる引張強さが必要である。引張強
さが低いと圧入ポットの注入穴切れが生じ量産性が悪
く、また、インジェクションでは製品ゲート等が切れ自
動化ができないといった不具合が生じる。On the other hand, from the viewpoint of processing, a compression press molding method and an injection molding method using a mold by a press-fit pot type are used for these production methods. For this reason, a tensile strength that can withstand processing is required. If the tensile strength is low, the injection hole of the press-fitting pot is cut and mass productivity is poor, and the injection gate breaks the product gate and the like, making it impossible to automate.
【００２３】[0023]
【作用】第一の発明では低硬度材料として、通常の塩素
化ポリエチレンを用い、その架橋促進剤にジペンタメチ
レンチウラムテトラスルフィド、アクリル酸亜鉛塩を用
いたことにより、圧縮歪み、引張強さを大巾に向上させ
ることができる。また、第二の発明では第一の発明であ
るゴム組成物を軸芯材の外周上に、被覆することによ
り、ゴム層のＪＩＳ−Ａ硬度を３５以下として紙の取込
性、送り安定性を顕著に改善させることができる。According to the first aspect of the present invention , ordinary chlorinated polyethylene is used as the low hardness material, and dipentamethylene thiuram tetrasulfide and zinc acrylate are used as the crosslinking accelerator, thereby reducing the compressive strain and tensile strength. Can be greatly improved. The second invention is the first invention.
That the rubber composition on the outer circumference of the shaft member, by coating, taking of the paper a JIS-A hardness of the rubber layer as 35 or less, it is possible to markedly improve feed stability.
【００２４】[0024]
【実施例】以下、本発明の実施例を説明する。Embodiments of the present invention will be described below.
【００２５】[0025]
【００２６】[0026]
【００２７】[0027]
【００２８】[0028]
【００２９】[0029]
【００３０】[0030]
【００３１】[0031]
【００３２】[0032]
【００３３】[0033]
【００３４】[0034]
【００３５】[0035]
【００３６】[0036]
【００３７】[0037]
【００３８】第一及び第二の発明である低硬度ゴム組成
物及び紙葉搬送ゴムロールの実施例及び比較例について
説明する。Examples and comparative examples of the low-hardness rubber composition and the paper sheet conveying rubber roll according to the first and second inventions will be described.
【００３９】（実施例８）塩素化ポリエチレン１００重
量部に対して、補強剤として脂肪酸炭酸カルシウム（Ｃ
ａＣＯ3 ）５０重量部、可塑剤であるジオクチルフタレ
ート（ＤＯＰ）を１００重量部、チタン白１０重量部、
着色剤１重量部、マグネシア１０重量部、トリメルカプ
トトリアジン３重量部、２，メルカプトベンゾチアゾル
２，ジシクロヘキシルアミン酸１．５重量部配合してな
るゴム組成物に、加硫促進剤としてジペンタメチレンテ
トラスルフィドとアクリル酸亜鉛塩とをそれぞれ０．５
重量部併用して添加し、これをＪＩＳ−Ｋ６３０１法に
より７０℃×２２ｈｒの条件で圧縮永久歪みを測定する
と共に、圧入モールド金型を用い、金型内注入穴でのゴ
ム切れによるモールド加工性を判断した。Example 8 A fatty acid calcium carbonate (C) was used as a reinforcing agent for 100 parts by weight of chlorinated polyethylene.
aCO 3 ) 50 parts by weight, 100 parts by weight of dioctyl phthalate (DOP) as a plasticizer, 10 parts by weight of titanium white,
A rubber composition comprising 1 part by weight of a coloring agent, 10 parts by weight of magnesia, 3 parts by weight of trimercaptotriazine, 1.5 parts by weight of 2, mercaptobenzothiazol 2, and 1.5 parts by weight of dicyclohexylamic acid was added with dipentane as a vulcanization accelerator. Each of methylenetetrasulfide and zinc acrylate 0.5
The compression set was measured in accordance with JIS-K6301 under the conditions of 70 ° C. × 22 hr, and the moldability was measured by using a press-fitting mold and cutting rubber at the injection hole in the mold. Was judged.
【００４０】（実施例９）実施例８の成分からなるゴム
組成物に、加硫促進剤としてジペンタメチレンテトラス
ルフィド０．５重量部、アクリル酸亜鉛塩１．０重量部
併用して添加し、これを実施例８と同様に圧縮永久歪み
を測定すると共に、モールド加工性を判断した。Example 9 To a rubber composition comprising the components of Example 8, 0.5 part by weight of dipentamethylene tetrasulfide and 1.0 part by weight of zinc acrylate were added in combination as a vulcanization accelerator. The compression set was measured in the same manner as in Example 8, and the moldability was determined.
【００４１】（実施例１０）実施例８の成分からなるゴ
ム組成物に、加硫促進剤としてジペンタメチレンテトラ
スルフィド０．５重量部、アクリル酸亜鉛塩３．０重量
部併用して添加し、これを実施例８と同様に圧縮永久歪
みを測定すると共に、モールド加工性を判断した。Example 10 To a rubber composition comprising the components of Example 8 were added 0.5 parts by weight of dipentamethylene tetrasulfide and 3.0 parts by weight of zinc acrylate as a vulcanization accelerator. The compression set was measured in the same manner as in Example 8, and the moldability was determined.
【００４２】（実施例１１）実施例８の成分からなるゴ
ム組成物に、加硫促進剤としてジペンタメチレンテトラ
スルフィド０．５重量部、アクリル酸亜鉛塩５．０重量
部併用して添加し、これを実施例８と同様に圧縮永久歪
みを測定すると共に、モールド加工性を判断した。Example 11 To a rubber composition comprising the components of Example 8, 0.5 parts by weight of dipentamethylene tetrasulfide and 5.0 parts by weight of zinc acrylate were added in combination as a vulcanization accelerator. The compression set was measured in the same manner as in Example 8, and the moldability was determined.
【００４３】（実施例１２）実施例８の成分からなるゴ
ム組成物に、加硫促進剤としてジペンタメチレンテトラ
スルフィド０．７５重量部、アクリル酸亜鉛塩１．０重
量部併用して添加し、これを実施例８と同様に圧縮永久
歪みを測定すると共に、モールド加工性を判断した。Example 12 To a rubber composition comprising the components of Example 8, 0.75 parts by weight of dipentamethylenetetrasulfide and 1.0 part by weight of zinc acrylate were added as vulcanization accelerators. The compression set was measured in the same manner as in Example 8, and the moldability was determined.
【００４４】（実施例１３）実施例８の成分からなるゴ
ム組成物に、加硫促進剤としてジペンタメチレンテトラ
スルフィドとアクリル酸亜鉛塩をそれぞれ１．０重量部
併用して添加し、これを実施例８と同様に圧縮永久歪み
を測定すると共に、モールド加工性を判断した。(Example 13) To a rubber composition comprising the components of Example 8, 1.0 parts by weight of dipentamethylenetetrasulfide and zinc acrylate were added in combination as vulcanization accelerators. The compression set was measured as in Example 8, and the moldability was determined.
【００４５】（実施例１４）実施例８の成分からなるゴ
ム組成物に、加硫促進剤としてジペンタメチレンテトラ
スルフィド１．５重量部、アクリル酸亜鉛塩１．０重量
部併用して添加し、これを実施例８と同様に圧縮永久歪
みを測定すると共に、モールド加工性を判断した。(Example 14) To a rubber composition comprising the components of Example 8, 1.5 parts by weight of dipentamethylene tetrasulfide and 1.0 part by weight of zinc acrylate were added in combination as a vulcanization accelerator. The compression set was measured in the same manner as in Example 8, and the moldability was determined.
【００４６】（比較例４）塩素化ポリエチレン１００重
量部に対して、補強剤として脂肪酸炭酸カルシウム（Ｃ
ａＣＯ3 ）５０重量部、可塑剤であるジオクチルフタレ
ート（ＤＯＰ）を１００重量部、チタン白１０重量部、
着色剤１重量部、マグネシア１０重量部、トリメルカプ
トトリアジン２重量部、２，メルカプトベンゾチアゾル
ジシクロヘキシルアミン酸４重量部配合してなるゴム組
成物を実施例８と同様な方法で圧縮永久歪みを測定する
と共に、モールド加工性を判断した。Comparative Example 4 Fatty acid calcium carbonate (C) was used as a reinforcing agent for 100 parts by weight of chlorinated polyethylene.
aCO 3 ) 50 parts by weight, 100 parts by weight of dioctyl phthalate (DOP) as a plasticizer, 10 parts by weight of titanium white,
Compression set was determined by the same method as in Example 8 using a rubber composition containing 1 part by weight of a colorant, 10 parts by weight of magnesia, 2 parts by weight of trimercaptotriazine, and 4 parts by weight of 2, mercaptobenzothiazoldicyclohexylamine acid. While measuring, mold processability was judged.
【００４７】（比較例５）塩素化ポリエチレン１００重
量部に対して、補強剤として脂肪酸炭酸カルシウム（Ｃ
ａＣＯ3 ）５０重量部、可塑剤であるジオクチルフタレ
ート（ＤＯＰ）を１００重量部、チタン白１０重量部、
着色剤１重量部、マグネシア１０重量部、トリメルカプ
トトリアジン１．５重量部、２，メルカプトベンゾチア
ゾルジシクロヘキシルアミン酸３重量部配合してなるゴ
ム組成物を実施例８と同様な方法で圧縮永久歪みを測定
すると共に、モールド加工性を判断した。Comparative Example 5 A fatty acid calcium carbonate (C) was used as a reinforcing agent with respect to 100 parts by weight of chlorinated polyethylene.
aCO 3 ) 50 parts by weight, 100 parts by weight of dioctyl phthalate (DOP) as a plasticizer, 10 parts by weight of titanium white,
A rubber composition comprising 1 part by weight of a coloring agent, 10 parts by weight of magnesia, 1.5 parts by weight of trimercaptotriazine, and 3 parts by weight of 2, mercaptobenzothiazoldicyclohexylamic acid was compression-permanent in the same manner as in Example 8. The strain was measured and the moldability was determined.
【００４８】（比較例６）塩素化ポリエチレン１００重
量部に対して、補強剤として脂肪酸炭酸カルシウム（Ｃ
ａＣＯ3 ）５０重量部、可塑剤であるジオクチルフタレ
ート（ＤＯＰ）を１００重量部、チタン白１０重量部、
着色剤１重量部、マグネシア１０重量部、トリメルカプ
トトリアジン３重量部、２，メルカプトベンゾチアゾル
ジシクロヘキシルアミン酸１．５重量部配合してなるゴ
ム組成物を実施例８と同様な方法で圧縮永久歪みを測定
すると共に、モールド加工性を判断した。Comparative Example 6 A fatty acid calcium carbonate (C) was used as a reinforcing agent for 100 parts by weight of chlorinated polyethylene.
aCO 3 ) 50 parts by weight, 100 parts by weight of dioctyl phthalate (DOP) as a plasticizer, 10 parts by weight of titanium white,
A rubber composition containing 1 part by weight of a coloring agent, 10 parts by weight of magnesia, 3 parts by weight of trimercaptotriazine, and 1.5 parts by weight of 2, mercaptobenzothiazoldicyclohexylamic acid was compression-permanent in the same manner as in Example 8. The strain was measured and the moldability was determined.
【００４９】（比較例７）塩素化ポリエチレン１００重
量部に対して、補強剤として脂肪酸炭酸カルシウム（Ｃ
ａＣＯ3 ）５０重量部、可塑剤であるジオクチルフタレ
ート（ＤＯＰ）を１００重量部、チタン白１０重量部、
着色剤１重量部、マグネシア１０重量部、トリメルカプ
トトリアジン３重量部、２，メルカプトベンゾチアゾル
ジシクロヘキシルアミン酸１．５重量部配合してなるゴ
ム組成物に、加硫促進剤としてアクリル酸亜鉛塩のみ
１．０重量部添加し、これを実施例８と同様な方法で圧
縮永久歪みを測定すると共に、モールド加工性を判断し
た。Comparative Example 7 A fatty acid calcium carbonate (C) was used as a reinforcing agent with respect to 100 parts by weight of chlorinated polyethylene.
aCO 3 ) 50 parts by weight, 100 parts by weight of dioctyl phthalate (DOP) as a plasticizer, 10 parts by weight of titanium white,
A rubber composition comprising 1 part by weight of a coloring agent, 10 parts by weight of magnesia, 3 parts by weight of trimercaptotriazine, and 1.5 parts by weight of 2, mercaptobenzothiazoldicyclohexylamic acid is added to a zinc acrylate salt as a vulcanization accelerator. Only 1.0 part by weight was added, and the compression set was measured in the same manner as in Example 8, and the moldability was determined.
【００５０】（比較例８）塩素化ポリエチレン１００重
量部に対して、補強剤として脂肪酸炭酸カルシウム（Ｃ
ａＣＯ3 ）５０重量部、可塑剤であるジオクチルフタレ
ート（ＤＯＰ）を１００重量部、チタン白１０重量部、
着色剤１重量部、マグネシア１０重量部、トリメルカプ
トトリアジン３重量部、２，メルカプトベンゾチアゾル
ジシクロヘキシルアミン酸１．５重量部配合してなるゴ
ム組成物に、加硫促進剤としてジペンタメチレンテトラ
スルフィドのみ１．０重量部添加し、これを実施例８と
同様な方法で圧縮永久歪みを測定すると共に、モールド
加工性を判断した。Comparative Example 8 A fatty acid calcium carbonate (C) was used as a reinforcing agent for 100 parts by weight of chlorinated polyethylene.
aCO 3 ) 50 parts by weight, 100 parts by weight of dioctyl phthalate (DOP) as a plasticizer, 10 parts by weight of titanium white,
A rubber composition comprising 1 part by weight of a coloring agent, 10 parts by weight of magnesia, 3 parts by weight of trimercaptotriazine, and 1.5 parts by weight of 2, mercaptobenzothiazoldicyclohexylamic acid is added with dipentamethylenetetrazol as a vulcanization accelerator. Only 1.0 part by weight of sulfide was added, and the compression set thereof was measured in the same manner as in Example 8, and the moldability was determined.
【００５１】（比較例９）塩素化ポリエチレン１００重
量部に対して、補強剤として脂肪酸炭酸カルシウム（Ｃ
ａＣＯ3 ）５０重量部、可塑剤であるジオクチルフタレ
ート（ＤＯＰ）を１００重量部、チタン白１０重量部、
着色剤１重量部、マグネシア１０重量部、トリメルカプ
トトリアジン２重量部、２，メルカプトベンゾチアゾル
ジシクロヘキシルアミン酸４重量部配合してなるゴム組
成物に、加硫促進剤としてアクリル酸亜鉛塩のみ１．０
重量部添加し、これを実施例８と同様な方法で圧縮永久
歪みを測定すると共に、モールド加工性を判断した。Comparative Example 9 A fatty acid calcium carbonate (C) was used as a reinforcing agent for 100 parts by weight of chlorinated polyethylene.
aCO 3 ) 50 parts by weight, 100 parts by weight of dioctyl phthalate (DOP) as a plasticizer, 10 parts by weight of titanium white,
To a rubber composition comprising 1 part by weight of a coloring agent, 10 parts by weight of magnesia, 2 parts by weight of trimercaptotriazine, and 4 parts by weight of 2, mercaptobenzothiazoldicyclohexylamine acid, only zinc acrylate as a vulcanization accelerator is added. .0
By weight, the compression set was measured in the same manner as in Example 8 and the moldability was determined.
【００５２】（比較例１０）塩素化ポリエチレン１００
重量部に対して、補強剤として脂肪酸炭酸カルシウム
（ＣａＣＯ3 ）５０重量部、可塑剤であるジオクチルフ
タレート（ＤＯＰ）を１００重量部、チタン白１０重量
部、着色剤１重量部、マグネシア１０重量部、トリメル
カプトトリアジン２重量部、２，メルカプトベンゾチア
ゾルジシクロヘキシルアミン酸４重量部配合してなるゴ
ム組成物に、加硫促進剤としてジペンタメチレンテトラ
スルフィドのみ１．０重量部添加し、これを実施例８と
同様な方法で圧縮永久歪みを測定すると共に、モールド
加工性を判断した。Comparative Example 10 Chlorinated Polyethylene 100
50 parts by weight of fatty acid calcium carbonate (CaCO 3 ) as a reinforcing agent, 100 parts by weight of dioctyl phthalate (DOP) as a plasticizer, 10 parts by weight of titanium white, 1 part by weight of a coloring agent, 10 parts by weight of magnesia with respect to parts by weight To a rubber composition comprising 2 parts by weight of trimercaptotriazine and 4 parts by weight of 2, mercaptobenzothiazoldicyclohexylamic acid, only 1.0 part by weight of dipentamethylenetetrasulfide was added as a vulcanization accelerator. The compression set was measured in the same manner as in Example 8, and the moldability was determined.
【００５３】[0053]
【表２】 [Table 2]
【００５４】塩素化ポリエチレンのトリアジン加硫とし
ては既に、トリメルカプトトリアジンに促進剤として
２，メルカプトベンゾチアゾルジシクロロヘキシルアミ
ンの塩使用が公知である。しかしながら、これではＣＰ
Ｅの低硬度配合物では、表２からも明らかなように、比
較例４の様に引張強さが低く加工性に難点が生じ比較例
５，６ではいずれも圧縮永久歪みが悪い。また、比較例
７〜１０に示すように、ジペンタメチレンテトラスルフ
ィド、アクリル酸亜鉛塩それぞれ単独では特性が得られ
ない。これに対し、実施例８〜１４はいずれも物性、加
工性ともに良好な結果が得られた。As triazine vulcanization of chlorinated polyethylene, it is already known to use trimercaptotriazine and 2, mercaptobenzothiazoldicyclolohexylamine as an accelerator. However, in this case the CP
As is clear from Table 2, the low-hardness compound of E has a low tensile strength as shown in Comparative Example 4, causing a problem in workability, and Comparative Examples 5 and 6 all have poor compression set. Further, as shown in Comparative Examples 7 to 10, no characteristics can be obtained by using dipentamethylene tetrasulfide and zinc acrylate alone. On the other hand, in Examples 8 to 14, good results were obtained in both physical properties and workability.
【００５５】[0055]
【発明の効果】以上要するに本発明によれば、低硬度
で、かつゴム弾性、機械的強度、耐摩耗性及び圧縮歪
み、引張強さ等の材料特性に優れた新規な低硬度ゴム組
成物が得られるため、この低硬度ゴム組成物を軸心上に
被覆して成る紙葉搬送ゴムロールは高信頼性の紙葉搬送
性を発揮することができ、工業上有用である等といった
優れた効果を有する。In summary, according to the present invention, there is provided a novel low-hardness rubber composition having low hardness and excellent material properties such as rubber elasticity, mechanical strength, abrasion resistance, compressive strain and tensile strength. Therefore, the paper transport rubber roll formed by coating the low hardness rubber composition on the shaft center can exhibit highly reliable paper transport properties and have excellent effects such as being industrially useful. Have.
【図１】本発明の低硬度ゴム組成物を軸芯体上に被覆し
てなる紙葉搬送ゴムロールを示す断面図である。FIG. 1 is a cross-sectional view showing a paper sheet conveying rubber roll obtained by coating a low hardness rubber composition of the present invention on a mandrel.
１ 紙葉搬送ゴムロール ２ 軸芯体 ３ ゴム層（低硬度ゴム組成物） DESCRIPTION OF REFERENCE NUMERALS 1 paper roll rubber roll 2 shaft core 3 rubber layer (low hardness rubber composition)
───────────────────────────────────────────────────── フロントページの続き (72)発明者 佐藤 久 茨城県日立市日高町５丁目１番１号 日 立電線株式会社パワーシステム研究所内 (56)参考文献 特開 平２−272002（ＪＰ，Ａ) 特開 昭60−31503（ＪＰ，Ａ) 特開 昭58−152005（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) C08L 23/28 C08K 5/00 - 5/59 F16C 13/00 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Hisashi Sato 5-1-1, Hidaka-cho, Hitachi City, Ibaraki Prefecture Power System Research Laboratories Hitachi, Ltd. (56) References JP-A-2-272002 (JP, A) JP-A-60-31503 (JP, A) JP-A-58-152005 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) C08L 23/28 C08K 5/00-5 / 59 F16C 13/00
Claims (2)
て、可塑剤を８０重量部以上配合してなるゴム組成物に
おいて、該ゴム組成物に加硫促進剤としてジペンタメチ
レンテトラスルフィドとアクリル酸亜鉛塩とを併用添加
して成ることを特徴とする低硬度ゴム組成物。1. A rubber composition comprising 80 parts by weight or more of a plasticizer with respect to 100 parts by weight of chlorinated polyethylene, wherein dipentamethylenetetrasulfide and zinc acrylate are used as a vulcanization accelerator in the rubber composition. A low-hardness rubber composition characterized by being added in combination with a salt.
る紙葉搬送ゴムロールにおいて、上記加硫ゴムは、塩素
化ポリエチレン１００重量部に対して、可塑剤を８０重
量部以上配合してなるゴム組成物であって、該ゴム組成
物に加硫促進剤としてジペンタメチレンテトラスルフィ
ドとアクリル酸亜鉛塩とを併用添加してなる低硬度ゴム
組成物を成形、加硫してなることを特徴とする紙葉搬送
ゴムロール。2. A paper sheet transport rubber roll comprising a shaft core material coated with a vulcanized rubber on an outer periphery thereof, wherein the vulcanized rubber is chlorine-free.
80 parts of plasticizer per 100 parts by weight of polyethylene
A rubber composition comprising at least one part by mass, wherein the rubber composition
As a vulcanization accelerator
A paper transport rubber roll obtained by molding and vulcanizing a low-hardness rubber composition obtained by adding a metal salt and a zinc acrylate together .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32326792A JP3163805B2 (en) | 1992-01-09 | 1992-12-02 | Low hardness rubber composition and paper sheet transport rubber roll |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4-2172 | 1992-01-09 | ||
| JP217292 | 1992-01-09 | ||
| JP32326792A JP3163805B2 (en) | 1992-01-09 | 1992-12-02 | Low hardness rubber composition and paper sheet transport rubber roll |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05247288A JPH05247288A (en) | 1993-09-24 |
| JP3163805B2 true JP3163805B2 (en) | 2001-05-08 |
Family
ID=26335506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32326792A Expired - Lifetime JP3163805B2 (en) | 1992-01-09 | 1992-12-02 | Low hardness rubber composition and paper sheet transport rubber roll |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3163805B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7651580B2 (en) | 2001-12-21 | 2010-01-26 | Henkel Kommanditgesellschaft Auf Aktien (Henkel Kgaa) | Nanoparticulate preparation |
| US9627111B2 (en) | 2009-11-09 | 2017-04-18 | Ferrotec Corporation | Magnetic member and electronic component |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPWO2022145446A1 (en) * | 2020-12-28 | 2022-07-07 | ||
| WO2022145447A1 (en) * | 2020-12-28 | 2022-07-07 | 昭和電工株式会社 | Chlorinated-polyolefin composition |
-
1992
- 1992-12-02 JP JP32326792A patent/JP3163805B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7651580B2 (en) | 2001-12-21 | 2010-01-26 | Henkel Kommanditgesellschaft Auf Aktien (Henkel Kgaa) | Nanoparticulate preparation |
| US9627111B2 (en) | 2009-11-09 | 2017-04-18 | Ferrotec Corporation | Magnetic member and electronic component |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05247288A (en) | 1993-09-24 |
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