JPH11292236A - Heat resisting belt - Google Patents
Heat resisting beltInfo
- Publication number
- JPH11292236A JPH11292236A JP9761098A JP9761098A JPH11292236A JP H11292236 A JPH11292236 A JP H11292236A JP 9761098 A JP9761098 A JP 9761098A JP 9761098 A JP9761098 A JP 9761098A JP H11292236 A JPH11292236 A JP H11292236A
- Authority
- JP
- Japan
- Prior art keywords
- rubber
- ethylene
- olefin
- heat
- copolymer
- 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.)
- Granted
Links
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、鉄鋼、セメント等
の産業分野において、高温（１５０〜２５０℃）の輸送
物を搬送するためのコンベアベルトとして好適な、耐熱
老化性、ロール加工性、成形粘着加工性に優れると共
に、耐摩耗性等にも優れ、とりわけ、熱老化による物性
の低下が小さく、苛酷な高温環境下における長期使用に
耐え得る耐熱ベルトに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat resistant aging property, a roll workability, and a forming property suitable for a conveyor belt for transporting high-temperature (150 to 250.degree. C.) conveyed materials in the industrial fields such as steel and cement. The present invention relates to a heat-resistant belt which is excellent in adhesive workability and also excellent in abrasion resistance and the like, in which deterioration of physical properties due to heat aging is small, and which can withstand long-term use in a severe high temperature environment.
【０００２】[0002]
【従来の技術】鉄鋼、セメント等の産業分野において
は、クリンカ等の１５０〜２５０℃の高温の輸送物がベ
ルトコンベアで搬送される。一般に、このような高温輸
送物の搬送に用いられるコンベアベルトは、帆布又はス
チールコード等の補強材で補強されたゴムベルトよりな
るが、このゴムベルトとしては、ベルトとしてのロール
加工性や成形粘着加工性並びに輸送物の高温に耐え得る
耐熱性はもとより、使用期間中の保守点検作業を最小限
に抑えると共に、長期間の使用寿命を得るために、特に
耐熱劣化性に優れることが重要であり、また、輸送物に
よる摩耗の発生防止の点から耐摩耗性に優れ、特に、熱
老化による物性の低下が十分に抑制され、苛酷な高温環
境下における長期使用にも十分に耐え得ることが要求さ
れる。2. Description of the Related Art In the industrial fields such as steel and cement, high-temperature transported products such as clinkers at 150 to 250 ° C. are conveyed by a belt conveyor. In general, a conveyor belt used for transporting such high-temperature transport goods is made of a rubber belt reinforced with a reinforcing material such as a canvas or a steel cord. In addition to the heat resistance that can withstand the high temperature of the transported goods, it is important that the maintenance and inspection work during the use period be minimized, and in order to obtain a long service life, it is particularly excellent in heat deterioration resistance, It is required to have excellent abrasion resistance from the viewpoint of preventing occurrence of abrasion due to transported goods, in particular, to sufficiently suppress deterioration of physical properties due to heat aging and to sufficiently withstand long-term use in a severe high-temperature environment. .
【０００３】従来、耐熱ベルトとしての要求性能を極力
得るために、ゴムベルトを構成するゴム成分としてはＥ
ＰＭ（エチレン・プロピレン共重合体）が、また加硫剤
としては過酸化物が選択使用されている。Conventionally, in order to obtain the required performance as a heat-resistant belt as much as possible, a rubber component constituting a rubber belt is E.
PM (ethylene / propylene copolymer) and peroxide as a vulcanizing agent are selectively used.
【０００４】[0004]
【発明が解決しようとする課題】ゴムとしてＥＰＭを用
いた従来の耐熱ベルトでは、耐熱老化性、耐摩耗性にお
いて十分に満足し得る特性が得られない。特に、熱老化
による各種物性低下の抑制が十分でないために、苛酷な
高温環境下における長期使用には耐え得ることができな
い。A conventional heat-resistant belt using EPM as a rubber does not provide satisfactory aging resistance and abrasion resistance. In particular, since the deterioration of various physical properties due to heat aging is not sufficiently suppressed, it cannot withstand long-term use in a severe high-temperature environment.
【０００５】耐熱老化性をより向上させる目的でＥＰＭ
のエチレン含量を高くすることが行われる場合もある
が、ＥＰＭのエチレン含量を高くすると、結晶性が発現
されるために、ゴム本来の持つ柔軟性が失われ、ロール
加工性や成形時の粘着性が損なわれるという不具合があ
る。[0005] EPM for the purpose of further improving heat aging resistance
In some cases, the ethylene content of the EPM is increased, but when the ethylene content of the EPM is increased, the crystallinity is developed, so that the inherent flexibility of the rubber is lost, and the roll processability and the adhesion during molding are reduced. There is a defect that the property is impaired.
【０００６】このため、従来においては、ロール加工性
や成形粘着加工性を重視して、エチレン含量の低い、即
ちゴム特性の高いＥＰＭが用いられており、このため、
耐熱老化性や、耐摩耗性の要求性能が十分に満たされて
おらず、また、熱老化により各種物性が大きく低下して
いるのが現状である。[0006] Therefore, conventionally, EPM having a low ethylene content, that is, an EPM having a high rubber property has been used with emphasis on roll processability and molding adhesive processability.
At present, the required properties of heat aging resistance and abrasion resistance are not sufficiently satisfied, and various physical properties are greatly reduced due to heat aging.
【０００７】本発明は上記従来の問題点を解決し、耐熱
老化性、ロール加工性、成形粘着加工性、耐摩耗性等の
すべての要求性能に優れ、特に、熱老化による各種物性
の低下が十分に抑制され、苛酷な高温環境下における長
期使用にも十分に耐え得る長寿命耐熱ベルトを提供する
ことを目的とする。The present invention solves the above-mentioned conventional problems and is excellent in all required performances such as heat aging resistance, roll workability, molding adhesive workability, and abrasion resistance. An object of the present invention is to provide a long-life heat-resistant belt that is sufficiently suppressed and can withstand long-term use under a severe high-temperature environment.
【０００８】[0008]
【課題を解決するための手段】本発明の耐熱ベルトは、
補強材で補強されたゴムよりなる耐熱ベルトにおいて、
該ゴムはポリマー主成分としてエチレン・α−オレフィ
ン共重合体及び／又はエチレン・α−オレフィン・ジエ
ン共重合体を含有するゴム組成物を加硫したものであ
り、この加硫ゴムを１８０℃で１４日間加熱したときの
重量減少率が４％以下であることを特徴とする。The heat-resistant belt of the present invention comprises:
In a heat-resistant belt made of rubber reinforced with a reinforcing material,
The rubber is obtained by vulcanizing a rubber composition containing an ethylene / α-olefin copolymer and / or an ethylene / α-olefin / diene copolymer as a polymer main component. The weight loss rate when heated for 14 days is 4% or less.
【０００９】ゴム組成物のポリマー主成分としてエチレ
ン・α−オレフィン共重合体及び／又はエチレン・α−
オレフィン・ジエン共重合体を用いることにより、加硫
後のゴムとして、１８０℃で１４日間加熱したときの重
量減少率が４％以下であるようなゴムを得ることができ
る。このようなゴムよりなるベルトは、熱老化による物
性の低下が十分に抑制され、苛酷な高温環境下における
長期使用にも十分に耐え得るものとなる。An ethylene / α-olefin copolymer and / or an ethylene / α-olefin are used as the main polymer component of the rubber composition.
By using an olefin / diene copolymer, a rubber having a weight reduction rate of 4% or less when heated at 180 ° C. for 14 days can be obtained as a vulcanized rubber. A belt made of such a rubber can sufficiently suppress deterioration in physical properties due to heat aging, and can sufficiently withstand long-term use in a severe high-temperature environment.
【００１０】なお、本発明において、加硫ゴムを１８０
℃で１４日間加熱したときの重量減少率（以下「熱老化
重量減少率」と称す。）とは、ゴム組成物を加硫して得
られた加硫ゴムの重量（Ｍ1）と、この加硫ゴムを１８
０℃で１４日間加熱した後の重量（Ｍ2）から、｛（Ｍ1
−Ｍ2）／Ｍ1｝×１００で求められる重量減少率であ
る。[0010] In the present invention, the vulcanized rubber is 180
The weight loss rate when heated at 14 ° C. for 14 days (hereinafter referred to as “heat aging weight loss rate”) refers to the weight (M 1 ) of the vulcanized rubber obtained by vulcanizing the rubber composition, and 18 vulcanized rubber
From the weight (M 2 ) after heating at 0 ° C. for 14 days, Δ (M 1
−M 2 ) / M 1 ｝ × 100.
【００１１】本発明において、エチレン・α−オレフィ
ン共重合体及び／又はエチレン・α−オレフィン・ジエ
ン共重合体は、メタロセン系触媒の存在下に共重合させ
ることにより製造されたものであることが好ましい。ま
た、これらの共重合体を構成するα−オレフィンとして
はプロピレン又は１−オクテンが好ましい。In the present invention, the ethylene / α-olefin copolymer and / or ethylene / α-olefin / diene copolymer may be produced by copolymerizing in the presence of a metallocene catalyst. preferable. Further, propylene or 1-octene is preferable as the α-olefin constituting these copolymers.
【００１２】[0012]
【発明の実施の形態】本発明の耐熱ベルトを構成するゴ
ムは、ポリマー主成分としてエチレン・α−オレフィン
共重合体及び／又はエチレン・α−オレフィン・ジエン
共重合体を含有するゴム組成物を加硫したものであり、
加硫ゴムの熱老化重量減少率が４％以下のものである。BEST MODE FOR CARRYING OUT THE INVENTION The rubber constituting the heat resistant belt of the present invention comprises a rubber composition containing an ethylene / α-olefin copolymer and / or an ethylene / α-olefin / diene copolymer as a polymer main component. Vulcanized,
The heat-aged weight reduction rate of the vulcanized rubber is 4% or less.
【００１３】この熱老化重量減少率が４％を超えるよう
な加硫ゴムよりなるゴムベルトは、熱老化による各種物
性の低下が著しく、苛酷な高温環境下における長期使用
に耐えることができない。本発明では、この熱老化重量
減少率は３．７％以下とりわけ３．１％以下であること
が望ましい。A rubber belt made of a vulcanized rubber having a heat aging weight reduction rate of more than 4% has a remarkable decrease in various physical properties due to heat aging, and cannot withstand long-term use in a severe high-temperature environment. In the present invention, the heat aging weight reduction rate is desirably 3.7% or less, particularly preferably 3.1% or less.
【００１４】このような熱老化重量減少率を満たすゴム
組成物とするためには、ポリマー主成分としてのエチレ
ン・α−オレフィン共重合体及び／又はエチレン・α−
オレフィン・ジエン共重合体として、下記のような共重
合組成のものを採用するのが好ましい。In order to obtain a rubber composition that satisfies such a heat aging weight reduction rate, an ethylene / α-olefin copolymer and / or ethylene / α-
As the olefin / diene copolymer, those having the following copolymer composition are preferably employed.
【００１５】[エチレン・α−オレフィン共重合体]エチ
レン・α−オレフィン共重合体を構成するα−オレフィ
ンとしてはプロピレン又は１−オクテンが好ましく、エ
チレン・α−オレフィン共重合体のα−オレフィン含量
は２０〜７０重量％であることが好ましい。エチレン・
α−オレフィン共重合体としては、特に、プロピン含量
３０〜６０重量％のエチレン・プロピレン共重合体（以
下「ＥＰＭと称す」。）、又は、１−オクテン含量が２
０〜５０重量％のエチレン・１−オクテン共重合体（以
下「ＥＯＭ」と称す。）が好ましい。[Ethylene / α-olefin copolymer] The α-olefin constituting the ethylene / α-olefin copolymer is preferably propylene or 1-octene, and the α-olefin content of the ethylene / α-olefin copolymer is preferred. Is preferably 20 to 70% by weight. ethylene·
As the α-olefin copolymer, particularly, an ethylene-propylene copolymer having a propyne content of 30 to 60% by weight (hereinafter referred to as “EPM”) or a 1-octene content of 2
0 to 50% by weight of ethylene / 1-octene copolymer (hereinafter referred to as "EOM") is preferred.
【００１６】［エチレン・α−オレフィン・ジエン共重
合体］エチレン・α−オレフィン・ジエン共重合体を構
成するα−オレフィンとしてはプロピレンが好ましく、
エチレン・α−オレフィン・ジエン共重合体としては、
エチレン含量３０〜８０重量％、α−オレフィン含量２
０〜７０重量％のものが好ましい。エチレン・α−オレ
フィン・ジエン共重合体としては、特に、エチレン含量
４０〜７０重量％、プロピレン含量３０〜６０重量％の
エチレン・プロピレン・ジエン共重合体（以下「ＥＰＤ
Ｍ」と称す。）が好ましい。[Ethylene / α-olefin / diene copolymer] The α-olefin constituting the ethylene / α-olefin / diene copolymer is preferably propylene,
As the ethylene / α-olefin / diene copolymer,
Ethylene content 30-80% by weight, α-olefin content 2
Those having 0 to 70% by weight are preferred. As the ethylene / α-olefin / diene copolymer, particularly, an ethylene / propylene / diene copolymer having an ethylene content of 40 to 70% by weight and a propylene content of 30 to 60% by weight (hereinafter referred to as “EPD”)
M ”. Is preferred.
【００１７】また、本発明において、エチレン・α−オ
レフィン共重合体及びエチレン・α−オレフィン・ジエ
ン共重合体は、メタロセン系触媒の存在下に各単量体成
分を共重合させることにより製造されたものであること
が好ましい。即ち、一般に、共重合用触媒としては、主
にチーグラナッタ系触媒又はメタロセン系触媒が使用さ
れるが、チーグラナッタ系触媒の存在下で共重合反応さ
せることにより得られた共重合体では、熱老化重量減少
率を十分に小さくすることができず、熱老化による物性
の低下が若干大きい傾向にある。これに対して、メタロ
セン系触媒の存在下で共重合反応させることにより得ら
れた共重合体では、触媒残渣が少ない、分子量分布がシ
ャープである等の理由により、熱老化重量減少率を十分
に小さくすることができ、熱老化による物性の低下を十
分に抑制することができる。In the present invention, the ethylene / α-olefin copolymer and the ethylene / α-olefin / diene copolymer are produced by copolymerizing each monomer component in the presence of a metallocene catalyst. It is preferred that it is. That is, generally, a Ziegler-Natta-based catalyst or a metallocene-based catalyst is mainly used as a copolymerization catalyst, but a copolymer obtained by performing a copolymerization reaction in the presence of a Ziegler-Natta-based catalyst has a heat aging weight. The reduction rate cannot be made sufficiently small, and physical properties tend to slightly decrease due to heat aging. On the other hand, in the copolymer obtained by performing the copolymerization reaction in the presence of the metallocene-based catalyst, the weight loss rate due to heat aging can be sufficiently reduced because the catalyst residue is small and the molecular weight distribution is sharp. It is possible to reduce the size and sufficiently suppress the deterioration of the physical properties due to heat aging.
【００１８】本発明では、熱老化重量減少率が４％以下
となるように、ポリマーを構成するエチレン・α−オレ
フィン共重合体及び／又はエチレン・α−オレフィン・
ジエン共重合体の成分組成や共重合体配合等が適宜調整
されるが、具体的には、次のようなポリマー主成分構成
とするのが好ましい。In the present invention, the ethylene / α-olefin copolymer and / or the ethylene / α-olefin / polymer constituting the polymer is adjusted so that the heat aging weight reduction rate is 4% or less.
Although the component composition of the diene copolymer and the blending of the copolymer are appropriately adjusted, specifically, it is preferable to use the following polymer main component composition.
【００１９】 実質的にプロピレン含量３０〜５０重
量％のＥＰＭのみで構成されたもの プロピレン含量３０〜５０重量％のＥＰＭ２０〜８
０重量％と、エチレン含量４０〜６０重量％、プロピレ
ン含量４０〜６０重量％のＥＰＤＭ２０〜８０重量％と
で構成されたもの １−オクテン含量が２０〜５０重量％のＥＯＭ２０
〜６０重量％と、エチレン含量４０〜６０重量％、プロ
ピレン４０〜６０重量％のＥＰＤＭ４０〜８０重量％と
で構成されたもの なお、ポリマー成分としては、本発明の目的を損なわな
い範囲で上記の共重合体以外のポリマーを用いても良
く、この場合、その他のポリマーとしては、ブチルゴム
等が挙げられ、その配合割合は全ポリマー成分中２０重
量部未満が好ましい。Substantially composed only of EPM having a propylene content of 30 to 50% by weight EPM 20 to 8 having a propylene content of 30 to 50% by weight
0 to 80% by weight of EPDM having an ethylene content of 40 to 60% by weight and a propylene content of 40 to 60% by weight 1-EOM20 having an octene content of 20 to 50% by weight
Of 60 to 60% by weight, and 40 to 80% by weight of EPDM having an ethylene content of 40 to 60% by weight and propylene of 40 to 60% by weight. A polymer other than the copolymer may be used. In this case, examples of the other polymer include butyl rubber, and the compounding ratio thereof is preferably less than 20 parts by weight based on all polymer components.
【００２０】なお、本発明のベルトに係るゴム組成物で
は、共架橋剤として、メタクリル酸亜鉛、メタクリル酸
アルミニウム、メタクリル酸カルシウム、メタクリル酸
マグネシウム等のメタクリル酸金属塩を配合することに
より、耐熱老化性や耐摩耗性、耐表面クラック性をより
一層向上させることができ、この場合、メタクリル酸金
属塩の配合量はポリマー１００重量部に対して０．２〜
５重量部とするのが好ましい。この範囲よりも配合量が
少ないと配合による改善効果が十分に得られず、多いと
流動時の分散、加硫後のモールド密着等の加工上の問題
と、ポリマーとの架橋反応のバランスが損なわれる。In the rubber composition according to the belt of the present invention, a metal methacrylate such as zinc methacrylate, aluminum methacrylate, calcium methacrylate, and magnesium methacrylate is blended as a co-crosslinking agent, so that heat aging is prevented. Properties, abrasion resistance, and surface crack resistance can be further improved. In this case, the compounding amount of the metal methacrylate is 0.2 to 100 parts by weight of the polymer.
Preferably it is 5 parts by weight. If the compounding amount is less than this range, the effect of the compounding cannot be sufficiently improved, and if the compounding amount is too large, the balance between the processing problems such as dispersion during flow, mold adhesion after vulcanization, and the crosslinking reaction with the polymer is impaired. It is.
【００２１】また、本発明のベルトに係るゴム組成物で
は、加工性改良剤として、液状ゴムを配合することによ
り、ロール加工性や成形粘着加工性をより一層向上させ
ることができる。この場合、液状ゴムの配合量はポリマ
ー１００重量部に対して５〜４０重量部とするのが好ま
しい。この範囲よりも配合量が少ないと配合による改善
効果が十分に得られず、多いと耐摩耗性が損なわれる。
なお、液状ゴムとしては、水素添加ＩＲ（イソプレンゴ
ム）、水素添加ＢＲ（ブタジエンゴム）、液状ＥＰＤＭ
（エチレン・プロピレン・ジエン共重合体）、液状ＥＰ
Ｍ等を用いることができる。Further, in the rubber composition according to the belt of the present invention, by mixing a liquid rubber as a processability improver, the roll processability and the molding adhesive processability can be further improved. In this case, the compounding amount of the liquid rubber is preferably 5 to 40 parts by weight based on 100 parts by weight of the polymer. If the amount is less than this range, the effect of the improvement cannot be sufficiently obtained, and if it is too large, the wear resistance is impaired.
As the liquid rubber, hydrogenated IR (isoprene rubber), hydrogenated BR (butadiene rubber), liquid EPDM
(Ethylene-propylene-diene copolymer), liquid EP
M or the like can be used.
【００２２】本発明のベルトに係るゴム組成物は、ポリ
マー主成分として前述の共重合体を用い、熱老化重量減
少率４％以下となるように構成すること以外は、通常の
ゴム組成物配合とすることができ、例えば、次のような
配合組成で調製される。The rubber composition according to the belt of the present invention is prepared by the usual rubber composition mixing method except that the above-mentioned copolymer is used as a main component of the polymer and the heat aging weight reduction rate is 4% or less. For example, it is prepared with the following composition.
【００２３】〈ゴム組成物配合（重量部）〉 ポリマー：１００ カーボン：３０〜８０ 液状ゴム等の加工性改良剤：５〜４０ メタクリル酸亜鉛等の共架橋剤：０．５〜７．０ 熱老化防止剤：０．５〜３．０ 加硫剤：３．０〜７．０ 加硫助剤（ステアリン酸及びＺｎＯ）：３．５〜１１．
０ なお、加硫剤としては通常の有機過酸化物を用いること
ができる。加硫助剤としてはステアリン酸、亜鉛華、パ
ルミチン酸、オレイン酸、ラウリン酸等を用いることが
できる。加工性改良剤としては、前述の液状ゴムの他、
脂肪族炭化水素樹脂、パラフィン系軟化剤、クマロン樹
脂、フェノールテルペン樹脂、ロジン誘導体等を用いる
ことができる。共架橋剤としてはメタクリル酸金属塩等
の含金属モノマーの他、トリアリルイソシアヌレート等
の多官能性モノマー、含イオウ化合物、ｐ−キノンジオ
キシム、ｐ，ｐ’−ジベンゾイルキノンジオキシム、
Ｎ，Ｎ’−ｍ−フェニレン−ビス−マレイミド等を用い
ることができる。熱老化防止剤としてはジフェニルアミ
ン系、キノリン系、イミダゾール系、ｐ−フェニレンジ
アミン系、フェノール系、ビス，トリス−ポリフェノー
ル系、チオビスフェノール系、ヒンダードフェノール系
等の各種のものを用いることができる。<Blend of rubber composition (parts by weight)> Polymer: 100 Carbon: 30 to 80 Processability improving agent such as liquid rubber: 5 to 40 Co-crosslinking agent such as zinc methacrylate: 0.5 to 7.0 Heat Anti-aging agent: 0.5-3.0 Vulcanizing agent: 3.0-7.0 Vulcanizing aid (stearic acid and ZnO): 3.5-11.
0 As the vulcanizing agent, a usual organic peroxide can be used. As the vulcanization aid, stearic acid, zinc white, palmitic acid, oleic acid, lauric acid and the like can be used. As the processability improver, in addition to the aforementioned liquid rubber,
Aliphatic hydrocarbon resins, paraffin softeners, coumarone resins, phenol terpene resins, rosin derivatives, and the like can be used. Examples of the co-crosslinking agent include metal-containing monomers such as metal methacrylate, polyfunctional monomers such as triallyl isocyanurate, sulfur-containing compounds, p-quinonedioxime, p, p'-dibenzoylquinonedioxime,
N, N'-m-phenylene-bis-maleimide and the like can be used. As the heat aging inhibitor, various types such as diphenylamine, quinoline, imidazole, p-phenylenediamine, phenol, bis, tris-polyphenol, thiobisphenol and hindered phenol can be used.
【００２４】本発明の耐熱ベルトは、このようなゴム組
成物を用いて製造されるが、その具体的な構成として
は、次のようなものが挙げられる。The heat-resistant belt of the present invention is manufactured by using such a rubber composition. Specific examples thereof include the following.
【００２５】 図１（ａ）に示す如く、帆布１を芯材
とし、外周をゴム２でカバーした耐熱ゴムベルト３。As shown in FIG. 1A, a heat-resistant rubber belt 3 having a canvas 1 as a core material and an outer periphery covered with rubber 2.
【００２６】 図１（ｂ）に示す如く、ゴム４内にス
チールコ−ド５を芯材として埋設した耐熱ゴムベルト
６。As shown in FIG. 1B, a heat-resistant rubber belt 6 having a steel cord 5 embedded in a rubber 4 as a core material.
【００２７】図１（ａ）の耐熱ゴムベルト３は、ナイロ
ン、ビニロン、ポリエステル等の合成繊維の織布よりな
る帆布１を芯材とするものであり、帆布１の積層枚数、
カバーゴム２の厚さやベルト幅等は使用目的に応じて適
宜決定されるが、カバーゴム２の厚さＴ1、Ｔ2は通常の
場合１．５〜２０ｍｍ程度とされる。The heat-resistant rubber belt 3 shown in FIG. 1A has a canvas 1 made of a woven fabric of synthetic fibers such as nylon, vinylon and polyester as a core material.
The thickness and the belt width of the cover rubber 2 are appropriately determined according to the purpose of use, but the thicknesses T 1 and T 2 of the cover rubber 2 are usually about 1.5 to 20 mm.
【００２８】また、図１（ｂ）の耐熱ゴムベルト６は、
直径０．２〜０．４ｍｍ程度の素線を複数本撚り合わせ
て直径２．０〜９．５ｍｍ程度のワイヤロープとしたス
チールコード５を５０〜２３０本程度並列させて芯材と
するものであり、一般に、耐熱ゴムベルト６の総厚みＴ
は１０〜５０ｍｍ程度とされる。The heat-resistant rubber belt 6 shown in FIG.
A core material is formed by twisting a plurality of strands of about 0.2 to 0.4 mm in diameter to form a wire rope having a diameter of about 2.0 to 9.5 mm and arranging about 50 to 230 steel cords 5 in parallel. Yes, generally, the total thickness T of the heat-resistant rubber belt 6
Is about 10 to 50 mm.
【００２９】このような耐熱ベルトは、常法に従って、
芯材となる帆布やスチールコードを本発明に係るゴム組
成物で成形した未加硫のゴムシート間に介在させ、加熱
加圧して加硫することにより容易に製造することができ
る。なお、加硫条件は、通常１２０〜１８０℃、１０〜
５０ｋｇ／ｃｍ2程度で１０〜９０分程度である。[0029] Such a heat-resistant belt is prepared according to a conventional method.
It can be easily manufactured by interposing a canvas or a steel cord as a core material between unvulcanized rubber sheets molded with the rubber composition according to the present invention, and vulcanizing by heating and pressing. In addition, vulcanization conditions are usually 120 to 180 ° C and 10 to 10 ° C.
It takes about 10 to 90 minutes at about 50 kg / cm 2 .
【００３０】[0030]
【実施例】以下に実施例及び比較例を挙げて本発明を詳
細に説明する。The present invention will be described in detail below with reference to examples and comparative examples.
【００３１】実施例１〜３、比較例１，２ 表１に示す配合のゴム組成物を１７０℃、６０ｋｇ／ｃ
ｍ2で３０分間加熱加圧して加硫成形し、得られたゴム
について、諸特性を測定し、結果を表１に示した。Examples 1 to 3, Comparative Examples 1 and 2 A rubber composition having the composition shown in Table 1 was prepared at 170 ° C. and 60 kg / c.
The resulting rubber was vulcanized and molded by heating and pressing at m 2 for 30 minutes, and various properties of the obtained rubber were measured. The results are shown in Table 1.
【００３２】なお、用いた原材料の詳細は次の通りであ
る。The details of the raw materials used are as follows.
【００３３】〈ポリマー〉 ＥＰＭ−１：日本合成ゴム社製「Ｔ７９４２」（エチレ
ン含量６３重量％：チーグラナッタ系触媒） ＥＰＭ−２：日本合成ゴム社製「ＥＰ１１」（エチレン
含量５２重量％：チーグラナッタ系触媒） ＥＯＭ：デュポン・ダウエラストマー社製「Ｅｎｇａｇ
ｅ８１８０」（１−オクテン含量２５重量％：メタロセ
ン系触媒） ＥＰＤＭ：デュポン・ダウエラストマー社製「ＮＯＬＤ
ＥＬ ＩＰ３４３０」（エチレン含量４２．５重量％、
プロピレン含量５７重量％：メタロセン系触媒） 〈加工性改良剤〉 液状ＥＰＭ：ユニロイヤルケミカル社製「トライレンＣ
Ｐ８０」（エチレン・プロピレン共重合物） 〈共架橋剤〉 メタクリル酸亜鉛：川口化学社製「アクターＺＭＡ」 トリアリルイソシアヌレート：日本化成社製「ＴＡＩ
Ｃ」 〈熱老化防止剤〉 ジフェニルアミン系老化防止剤：バイエル社製「Ｖｕｌ
ｋａｎｏｘ ＤＤＡ」（ジフェニルアミン誘導体） イミダゾール系老化防止剤：川口化学社製「アンテージ
ＭＢ」（２−メルカプトベンズイミダゾール） ヒンダードフェノール系：チバガイギー社製「イルガノ
ックス１０１０」（ペンタエリスリトールテトラキス
［３−（３，５−ジ−第三ブチル−４−ヒドロキシフェ
ニル）プロピオネート］） 〈加硫剤〉 有機過酸化物：日本油脂社製「ぺロキシモンＦ４０」
（炭酸カルシウム６０重量％、α，α’−ビス（ｔ−ブ
チルパーオキシ−ｍ−イソプロピル）ベンゼン４０重量
％含有） また、各種特性の測定方法は次の通りである。<Polymer> EPM-1: "T7942" manufactured by Nippon Synthetic Rubber Co., Ltd. (ethylene content: 63% by weight: Ziegler-Natta catalyst) EPM-2: "EP11" manufactured by Japan Synthetic Rubber Co., Ltd. (ethylene content: 52% by weight: Ziegler-Natta type) Catalyst) EOM: "Engag" manufactured by DuPont Dow Elastomer Co.
e8180 "(25% by weight of 1-octene: metallocene catalyst) EPDM:" NOLD "manufactured by DuPont Dow Elastomer Co.
EL IP3430 "(ethylene content 42.5% by weight,
Propylene content 57% by weight: metallocene catalyst) <Processability improver> Liquid EPM: "TRILEN C" manufactured by Uniroyal Chemical Company
P80 "(Ethylene-propylene copolymer) <Co-crosslinking agent> Zinc methacrylate:" ACTOR ZMA "manufactured by Kawaguchi Chemical Co. Triallyl isocyanurate:" TAI "manufactured by Nippon Kasei Co., Ltd.
C><Heat aging inhibitor> Diphenylamine based aging inhibitor: “Vul” manufactured by Bayer AG
kanox DDA "(diphenylamine derivative) Imidazole anti-aging agent:" ANTAGE MB "(2-mercaptobenzimidazole) manufactured by Kawaguchi Chemical Co. Hindered phenol type:" Irganox 1010 "(pentaerythritol tetrakis [3- (3 , 5-Di-tert-butyl-4-hydroxyphenyl) propionate]) <Vulcanizing agent> Organic peroxide: "Peroximon F40" manufactured by NOF Corporation
(Containing 60% by weight of calcium carbonate and 40% by weight of α, α′-bis (t-butylperoxy-m-isopropyl) benzene) The measuring methods of various properties are as follows.
【００３４】〈熱老化重量減少率〉サンプルの重量を、
１８０℃×１４日間の熱老化試験前後で測定し、前述の
如く｛（Ｍ1−Ｍ2）／Ｍ1｝×１００で算出した。<Heat Aging Weight Reduction Ratio>
It was measured before and after a heat aging test at 180 ° C. for 14 days, and was calculated as {(M 1 −M 2 ) / M 1 } × 100 as described above.
【００３５】〈伸び保持率及び強度保持率〉引張試験を
行った際のサンプルの伸び及び強度を、１８０℃×１４
日間の熱老化試験前後でそれぞれ測定し、試験前の値に
対する試験後の値の割合で求めた。<Elongation retention and strength retention> The elongation and strength of the sample at the time of the tensile test were measured at 180 ° C. × 14.
The values were measured before and after the heat aging test for one day, and determined by the ratio of the value after the test to the value before the test.
【００３６】〈耐摩耗性保持率〉摩耗試験を行った際の
摩耗量を、１８０℃×１４日間の熱老化試験前後で測定
し、試験後の摩耗量に対する試験前の摩耗量の割合で求
めた。<Abrasion Resistance Retention> The amount of abrasion during the abrasion test was measured before and after a heat aging test at 180 ° C. for 14 days, and was determined by the ratio of the amount of abrasion before the test to the amount of abrasion after the test. Was.
【００３７】[0037]
【表１】 [Table 1]
【００３８】表１より、ポリマーとしてＥＰＭ，ＥＯ
Ｍ，ＥＰＤＭを含み熱老化重量減少率が４％以下のゴム
であれば、耐熱老化性が著しく良好で、熱老化による物
性の低下が小さいことがわかる。From Table 1, it can be seen that EPM and EO were used as polymers.
It can be seen that a rubber containing M and EPDM and having a heat aging weight reduction ratio of 4% or less has remarkably good heat aging resistance and a small decrease in physical properties due to heat aging.
【００３９】[0039]
【発明の効果】以上詳述した通り、本発明によれば、鉄
鋼、セメント等の産業分野において、高温輸送物の搬送
用コンベアベルトとして好適な、耐熱老化性、ロール加
工性、成形粘着加工性、耐摩耗性等のすべての要求性能
に優れ、特に、熱老化による各種物性の低下が十分に抑
制され、苛酷な高温環境下における長期使用にも十分に
耐え得る長寿命の耐熱ベルトが提供される。As described in detail above, according to the present invention, heat aging resistance, roll workability, and mold adhesive workability suitable as a conveyor belt for transporting high-temperature goods in the industrial fields such as steel and cement. Provided is a heat-resistant belt with a long service life that excels in all required performances such as wear resistance and the like, in particular, the deterioration of various physical properties due to thermal aging is sufficiently suppressed, and can withstand long-term use under severe high temperature environment. You.
【図１】本発明の耐熱ベルトの実施の形態を示す模式的
な断面図である。FIG. 1 is a schematic sectional view showing an embodiment of a heat resistant belt of the present invention.
１ 帆布 ２，４ ゴム ３，６ 耐熱ゴムベルト ５ スチールコード 1 canvas 2,4 rubber 3,6 heat resistant rubber belt 5 steel cord
Claims (4)
ルトにおいて、 該ゴムはポリマー主成分としてエチレン・α−オレフィ
ン共重合体及び／又はエチレン・α−オレフィン・ジエ
ン共重合体を含有するゴム組成物を加硫したものであ
り、 この加硫ゴムを１８０℃で１４日間加熱したときの重量
減少率が４％以下であることを特徴とする耐熱ベルト。1. A heat-resistant belt comprising a rubber reinforced with a reinforcing material, wherein the rubber contains an ethylene / α-olefin copolymer and / or an ethylene / α-olefin / diene copolymer as a polymer main component. A heat-resistant belt obtained by vulcanizing a composition, wherein a weight loss rate of the vulcanized rubber when heated at 180 ° C. for 14 days is 4% or less.
フィン共重合体及び／又はエチレン・α−オレフィン・
ジエン共重合体が、メタロセン系触媒の存在下に共重合
させることにより製造されたものであることを特徴とす
る耐熱ベルト。2. The method according to claim 1, wherein the ethylene / α-olefin copolymer and / or the ethylene / α-olefin /
A heat-resistant belt, wherein the diene copolymer is produced by copolymerizing in the presence of a metallocene catalyst.
ンがプロピレンであることを特徴とする耐熱ベルト。3. The heat-resistant belt according to claim 1, wherein the α-olefin is propylene.
ンが１−オクテンであることを特徴とする耐熱ベルト。4. The heat resistant belt according to claim 1, wherein the α-olefin is 1-octene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP09761098A JP3911840B2 (en) | 1998-04-09 | 1998-04-09 | Heat resistant belt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP09761098A JP3911840B2 (en) | 1998-04-09 | 1998-04-09 | Heat resistant belt |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11292236A true JPH11292236A (en) | 1999-10-26 |
| JP3911840B2 JP3911840B2 (en) | 2007-05-09 |
Family
ID=14196997
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP09761098A Expired - Fee Related JP3911840B2 (en) | 1998-04-09 | 1998-04-09 | Heat resistant belt |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3911840B2 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005314520A (en) * | 2004-04-28 | 2005-11-10 | Yokohama Rubber Co Ltd:The | Rubber composition for conveyer belt and conveyer belt |
| JP2007039520A (en) * | 2005-08-02 | 2007-02-15 | Bando Chem Ind Ltd | Rubber composition and conveyor belt using the same |
| WO2013141152A1 (en) * | 2012-03-19 | 2013-09-26 | 住友化学株式会社 | Rubber composition and roll-shaped molding using said rubber composition |
| CN103600960A (en) * | 2013-12-03 | 2014-02-26 | 山东威普斯橡胶股份有限公司 | Rubber conveyer belt capable of enduring 300 DEG C high temperature |
| US9359495B2 (en) | 2013-01-29 | 2016-06-07 | The Yokohama Rubber Co., Ltd. | Rubber composition for heat resistant conveyor belts, and heat-resistant conveyor belt |
| CN108557375A (en) * | 2018-03-23 | 2018-09-21 | 上海米莜凯自动化装备有限公司 | Conveyer belt and preparation method thereof |
| WO2019093445A1 (en) | 2017-11-10 | 2019-05-16 | 横浜ゴム株式会社 | Rubber composition, and hose |
| WO2019182949A1 (en) * | 2018-03-19 | 2019-09-26 | Exxonmobil Chemical Patents Inc. | Elastomeric propylene-alpha-olefin-diene terpolymer compositions |
-
1998
- 1998-04-09 JP JP09761098A patent/JP3911840B2/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005314520A (en) * | 2004-04-28 | 2005-11-10 | Yokohama Rubber Co Ltd:The | Rubber composition for conveyer belt and conveyer belt |
| JP2007039520A (en) * | 2005-08-02 | 2007-02-15 | Bando Chem Ind Ltd | Rubber composition and conveyor belt using the same |
| WO2013141152A1 (en) * | 2012-03-19 | 2013-09-26 | 住友化学株式会社 | Rubber composition and roll-shaped molding using said rubber composition |
| CN104204075A (en) * | 2012-03-19 | 2014-12-10 | 住友化学株式会社 | Rubber composition and roll-shaped molding using said rubber composition |
| JPWO2013141152A1 (en) * | 2012-03-19 | 2015-08-03 | 住友化学株式会社 | Rubber composition and roll molded product using the rubber composition |
| TWI551641B (en) * | 2012-03-19 | 2016-10-01 | 住友化學股份有限公司 | Rubber composition molded roller using the same |
| US9359495B2 (en) | 2013-01-29 | 2016-06-07 | The Yokohama Rubber Co., Ltd. | Rubber composition for heat resistant conveyor belts, and heat-resistant conveyor belt |
| CN103600960A (en) * | 2013-12-03 | 2014-02-26 | 山东威普斯橡胶股份有限公司 | Rubber conveyer belt capable of enduring 300 DEG C high temperature |
| WO2019093445A1 (en) | 2017-11-10 | 2019-05-16 | 横浜ゴム株式会社 | Rubber composition, and hose |
| WO2019182949A1 (en) * | 2018-03-19 | 2019-09-26 | Exxonmobil Chemical Patents Inc. | Elastomeric propylene-alpha-olefin-diene terpolymer compositions |
| US11732121B2 (en) | 2018-03-19 | 2023-08-22 | Exxonmobil Chemical Patents Inc. | Elastomeric propylene-alpha-olefin-diene terpolymer compositions |
| CN108557375A (en) * | 2018-03-23 | 2018-09-21 | 上海米莜凯自动化装备有限公司 | Conveyer belt and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3911840B2 (en) | 2007-05-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0737228B2 (en) | Ethylene-alpha-olefin belting | |
| EP1205515B1 (en) | Ethylene-Alpha-Olefin belting | |
| EP0890610B1 (en) | Highly saturated nitrile copolymer rubber, process for the production thereof, heat-resistant rubber compositions comprising the rubber and composites comprising the rubber and fibers | |
| US20190359810A1 (en) | Rubber composite, processing method, rubber belt and rubber roller applying composite, and manufacturing method | |
| US9359495B2 (en) | Rubber composition for heat resistant conveyor belts, and heat-resistant conveyor belt | |
| US6492454B1 (en) | Rubber composition containing rubber, mercapto-triazine and epoxy grafter polymer | |
| JPH01146935A (en) | Rubber composition | |
| US4003420A (en) | Tire with sidewall composition | |
| CN108314851A (en) | The production method of rubber composition and processing method and application and the application | |
| JP2020505498A (en) | Rubber composition and processing method, and conveyor belt and manufacturing method using the same | |
| JPH11292236A (en) | Heat resisting belt | |
| US4004627A (en) | Pneumatic tire with sidewall composition | |
| JP2011178917A (en) | Rubber composition for heat resistant conveyer belt and heat resistant conveyer belt | |
| CN104312018A (en) | Cover compound for heat-resistant conveyor belt | |
| JP3951415B2 (en) | Heat resistant belt | |
| CN113166507B (en) | Rubber composition for conveyor belt and conveyor belt | |
| JP4057336B2 (en) | Rubber composition and pneumatic tire | |
| JP2007217142A (en) | Reinforcement canvas for heat-resistant conveyor belt and heat-resistant conveyor belt | |
| CN115725139B (en) | Rubber composition for conveyor belt and conveyor belt | |
| JP7464820B2 (en) | Rubber composition for conveyor belt and conveyor belt | |
| JP4792708B2 (en) | Rubber composition for conveyor belt and conveyor belt | |
| WO2024002542A1 (en) | High temperature resistant conveyor belt | |
| JP7243239B2 (en) | Chlorosulfonated polyolefin composition and vulcanizate | |
| JP2011074118A (en) | Chlorosulfonated polyolefin rubber composition and process for producing the same | |
| JP2001335667A (en) | Rubber composition and conveyer belt |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20060926 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20061116 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20070109 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20070122 |
|
| R150 | Certificate of patent or registration of utility model |
Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100209 Year of fee payment: 3 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110209 Year of fee payment: 4 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120209 Year of fee payment: 5 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120209 Year of fee payment: 5 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130209 Year of fee payment: 6 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20140209 Year of fee payment: 7 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |