JPH11246017A - Heat-resisting belt - Google Patents
Heat-resisting beltInfo
- Publication number
- JPH11246017A JPH11246017A JP5522998A JP5522998A JPH11246017A JP H11246017 A JPH11246017 A JP H11246017A JP 5522998 A JP5522998 A JP 5522998A JP 5522998 A JP5522998 A JP 5522998A JP H11246017 A JPH11246017 A JP H11246017A
- Authority
- JP
- Japan
- Prior art keywords
- ethylene
- heat
- polymer
- rubber composition
- rubber
- 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
Landscapes
- Belt Conveyors (AREA)
- Compositions Of Macromolecular Compounds (AREA)
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、耐表面クラック性等にも優れ、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, excellent in abrasion resistance, surface crack resistance and the like, and can withstand long-term use.
【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、輸送物による摩耗や
表面クラックの発生防止の点から耐摩耗性、耐表面クラ
ック性も良好であ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 composed of a rubber belt reinforced with canvas or a steel cord. In addition to heat resistance that can withstand high temperatures, it is important that maintenance and inspection work during use are minimized, and in order to obtain a long service life, it is particularly excellent in heat resistance and deterioration. In order to prevent the occurrence of wear and surface cracks, good wear resistance and good surface crack resistance are required.
【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、耐
表面クラック性において十分に満足し得る特性が得られ
ない。A conventional heat-resistant belt using EPM as a rubber does not provide satisfactory aging resistance, abrasion resistance and surface crack resistance.
【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、耐表面クラック性の要求性能
が十分に満たされていないのが現状である。[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, abrasion resistance, and surface crack resistance are not sufficiently satisfied.
【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、耐
表面クラック性等のすべての要求性能に優れ、長期使用
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, abrasion resistance, surface crack resistance, and can withstand long-term use. It is intended to provide a long life heat resistant belt.
【０００８】[0008]
【課題を解決するための手段】本発明の耐熱ベルトは、
ポリマーとしてエチレン・１−オクテン共重合体とエチ
レン・プロピレン共重合体とを含有するゴム組成物を用
いて構成されることを特徴とする。The heat-resistant belt of the present invention comprises:
It is characterized by being constituted by using a rubber composition containing an ethylene / 1-octene copolymer and an ethylene / propylene copolymer as a polymer.
【０００９】本発明に従って、エチレン・プロピレン共
重合体（ＥＰＭ）とエチレン・１−オクテン共重合体と
を併用することにより、高エチレン含量のＥＰＭを用い
た場合にゴム本来の柔軟性が損なわれることが防止さ
れ、耐熱老化性に優れた高エチレン含量ＥＰＭを用い
て、良好な加工性を確保することができるようになると
共に、耐摩耗性をも向上させることができるようにな
る。According to the present invention, by using an ethylene / propylene copolymer (EPM) and an ethylene / 1-octene copolymer in combination, the inherent flexibility of the rubber is impaired when an EPM having a high ethylene content is used. By using a high ethylene content EPM excellent in heat aging resistance, good workability can be ensured and abrasion resistance can be improved.
【００１０】本発明において、エチレン・１−オクテン
共重合体（以下「ＥＯＭ」と称す。）とエチレン・プロピ
レン共重合体（ＥＰＭ）との重量比率は２０／８０〜８
０／２０の範囲であることが好ましい。In the present invention, the weight ratio of ethylene / 1-octene copolymer (hereinafter referred to as "EOM") to ethylene / propylene copolymer (EPM) is 20/80 to 8
It is preferably in the range of 0/20.
【００１１】また、エチレン・プロピレン共重合体はエ
チレン含有率６０モル％以上の高エチレンＥＰＭとする
ことにより、耐熱老化性をより一層高めることができ
る。[0011] The ethylene-propylene copolymer can be further improved in heat aging resistance by using a high ethylene EPM having an ethylene content of 60 mol% or more.
【００１２】本発明においては、ゴム組成物中に共架橋
剤としてメタクリル酸金属塩をポリマー１００重量部に
対して０．２〜５重量部含有させることにより耐熱老化
性、耐摩耗性、耐表面クラック性をより一層高めること
ができる。また、ゴム組成物中に加工性改良剤として液
状ゴムをポリマー１００重量部に対して５〜２０重量部
含有させることにより、ロール加工性、成形粘着加工性
を向上させることができる。In the present invention, the rubber composition contains 0.2 to 5 parts by weight of a metal methacrylate as a co-crosslinking agent with respect to 100 parts by weight of the polymer, whereby heat aging resistance, abrasion resistance and surface resistance are improved. Cracking properties can be further enhanced. Further, when the rubber composition contains 5 to 20 parts by weight of a liquid rubber as a processability improver with respect to 100 parts by weight of the polymer, roll processability and molding adhesive processability can be improved.
【００１３】[0013]
【発明の実施の形態】以下に、本発明の実施の形態を、
図面を参照して詳細に説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below.
This will be described in detail with reference to the drawings.
【００１４】図１（ａ）、（ｂ）は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。FIGS. 1A and 1B are schematic sectional views showing an embodiment of the heat resistant belt of the present invention.
【００１５】まず、本発明に係るゴム組成物について説
明する。First, the rubber composition according to the present invention will be described.
【００１６】本発明に係るゴム組成物はポリマー成分と
してＥＰＭとＥＯＭとを含有するものである。The rubber composition according to the present invention contains EPM and EOM as polymer components.
【００１７】このうち、ＥＰＭについては、エチレン含
量６０モル％以上の高エチレンＥＰＭであることが、耐
熱老化性の向上の点で好ましく、特に好ましいエチレン
含量は６０〜８５モル％である。Among them, the EPM is preferably a high ethylene EPM having an ethylene content of 60 mol% or more from the viewpoint of improving the heat aging resistance, and a particularly preferable ethylene content is 60 to 85 mol%.
【００１８】一方、ＥＯＭについては、１−オクテン含
量５〜２０モル％程度のものを用いるのが、加工性を満
足した上で耐熱老化性や耐摩耗性の維持の点で好まし
い。On the other hand, it is preferable to use an EOM having a 1-octene content of about 5 to 20 mol% in terms of maintaining heat aging resistance and abrasion resistance while satisfying workability.
【００１９】このＥＰＭとＥＯＭの配合比は、重量比率
で２０／８０〜８０／２０であることが好ましく、この
範囲よりもＥＰＭが多いとＥＯＭを配合したことによる
改善効果が十分に得られず、耐熱老化性や耐摩耗性の向
上効果が劣るものとなる。逆にこの範囲よりもＥＯＭが
多いとロール及び成形加工性の点で問題が生じる。The compounding ratio of EPM and EOM is preferably 20/80 to 80/20 in weight ratio. If the amount of EPM is larger than this range, the effect of compounding EOM cannot be sufficiently improved. In addition, the effect of improving heat aging resistance and wear resistance is poor. Conversely, if the EOM is larger than this range, problems arise in terms of roll and formability.
【００２０】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ＥＰＭとＥＯＭ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、
第三成分の少ないエチレン含量４０モル％以上のＥＰＤ
Ｍやエチレン含量４０モル％以上のＥＰＭ等が挙げら
れ、その配合割合は全ポリマー成分中５０重量部以下が
好ましい。As the polymer component, a polymer other than EPM and EOM may be used as long as the object of the present invention is not impaired. In this case, as the other polymer,
EPD with a low ethylene content of 40 mol% or more with a low third component
M and EPM having an ethylene content of 40 mol% or more, and the mixing ratio thereof is preferably 50 parts by weight or less based on all polymer components.
【００２１】本発明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 present invention, zinc methacrylate, aluminum methacrylate,
By adding a metal methacrylate such as calcium methacrylate or magnesium methacrylate, the heat aging resistance, abrasion resistance, and surface crack resistance can be further improved, and in this case, the amount of the metal methacrylate compounded. Is preferably 0.2 to 5 parts by weight based on 100 parts by weight of the polymer. If the compounding amount is less than this range, the effect of improvement by the compounding is not sufficiently obtained, and if the compounding amount is too large, dispersion during flowing,
The balance between the processing problems such as mold adhesion after vulcanization and the crosslinking reaction with the polymer is lost.
【００２２】また、本発明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５〜２０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ＥＰＭ等を用
いることができる。Further, in the rubber composition according to the present invention, by incorporating 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 100
It is preferable that the amount be 5 to 20 parts by weight based on parts by weight. 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. In addition, as the liquid rubber, hydrogenated IR (isoprene rubber), hydrogenated BR (butadiene rubber), liquid EPDM (ethylene-propylene-diene copolymer), liquid EPM, and the like can be used.
【００２３】本発明に係るゴム組成物は、ポリマー成分
としてＥＰＭとＥＯＭとを併用すること以外は、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 present invention can be made into a usual rubber composition except that EPM and EOM are used together as a polymer component. For example, the rubber composition is prepared by the following composition. .
【００２４】〈ゴム組成物配合（重量部）〉 ポリマー（ＥＰＭとＥＯＭを含む）：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 (including EPM and EOM): 100 Carbon: 30 to 80 Processability improving agent for liquid rubber: 5 to 40 Co-crosslinking agent such as zinc methacrylate: 0 0.5-7.0 Thermal aging inhibitor: 0.5-3.0 Vulcanizing agent: 3.0-7.0 Vulcanization 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.
【００２５】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.
【００２６】 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.
【００２７】 図１（ｂ）に示す如く、ゴム４内にス
チールコード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.
【００２８】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.
【００２９】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.
【００３０】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。[0030] 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 .
【００３１】[0031]
【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.
【００３２】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、緒特性を測定し、結果を表１に示した。Examples 1 to 3 and 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 the characteristics of the obtained rubber were measured. The results are shown in Table 1.
【００３３】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.
【００３４】〈ポリマー〉 ＥＰＭ−１：日本合成ゴム社製「Ｔ７９４２」（エチレ
ン含量６２モル％） ＥＰＭ−２：日本合成ゴム社製「ＥＰ１１」（エチレン
含量５３モル％） ＥＯＭ：ジュポン・ダウエラストマー社製「Ｅｎｇａｇ
ｅ８１８０」（オクテン含量９重量％） 〈加工性改良剤〉 液状ＥＰＤＭ：ユニロイヤルケミカルカンパニー社製
「トライレン６６」（第３成分ＥＭＢ（エチリデンノル
ボルネン）４．５重量％、粘度平均分子量８０００） 脂肪族系炭化水素樹脂：エクソン化学社製「エスコレツ
１１０２」 パラフィン系軟化剤：日本サン石油社製「サンバー２２
８０」 〈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） 〈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: 62 mol%) EPM-2: "EP11" manufactured by Nippon Synthetic Rubber Co., Ltd. (ethylene content: 53 mol%) EOM: Dupont Dow elastomer Engag
e8180 "(octene content 9% by weight) <Processability improver> Liquid EPDM:" TRILEN 66 "manufactured by Uniroyal Chemical Company (third component EMB (ethylidene norbornene) 4.5% by weight, viscosity average molecular weight 8000) Aliphatic -Based hydrocarbon resin: "ESCOLET 1102" manufactured by Exxon Chemical Co., Ltd. Paraffin-based softening agent: "Samba 22" manufactured by Nippon Sun Oil Co., Ltd.
80 "<Co-crosslinking agent> Zinc methacrylate:" Actor ZMA "manufactured by Kawaguchi Chemical Co., Ltd. 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., Ltd. <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.
【００３５】〈耐熱老化性〉ＪＩＳ ３号ダンベルで打
ち抜いた厚さ２ｍｍの加硫シート状物を１８０℃の高温
下に１０日間放置したときの、伸び及び強度の保持率
（放置前の値に対する放置後の値の割合）を求めた。<Heat aging resistance> The retention rate of elongation and strength when the vulcanized sheet material having a thickness of 2 mm punched with a JIS No. 3 dumbbell was left at a high temperature of 180 ° C. for 10 days (based on the value before leaving) Ratio after standing).
【００３６】〈加工性〉ロール加工性は１０’’ロール
で前後ロール温度５０℃、圧延シート厚さ３ｍｍの条件
でロール加工した際の加工の良（○）否（×）で測定
し、成形粘着加工性は上記圧延シートを１日間室温下で
放置した後、２枚貼り合わせ、成形粘着可能水準に対す
る粘着性の発現の良（○）否（×）で判定した。なお、
△は「若干劣る」を示す。<Workability> The roll workability was measured by determining whether the roll processing was good (）) or not (×) when the roll was rolled on a 10 ″ roll under the conditions of a roll temperature of 50 ° C. and a rolled sheet thickness of 3 mm. The adhesive workability was evaluated by whether the rolled sheet was allowed to stand at room temperature for one day and then bonded together, and whether the adhesiveness was good (否) or not (x) with respect to the level of the formable adhesiveness. In addition,
Δ indicates “slightly inferior”.
【００３７】〈耐摩耗性（ＤＩＮ摩耗）〉室温下、摩耗
試験を行った際の摩耗量を１８０℃、１０日間の耐熱老
化試験前後で測定した。<Abrasion Resistance (DIN Abrasion)> The amount of abrasion when a wear test was conducted at room temperature was measured before and after a heat aging test at 180 ° C. for 10 days.
【００３８】〈耐表面クラック性（デマチャカトグロウ
ス）〉室温下５万回の条件でクラック試験を行った際の
クラック幅を１８０℃、１０日間の放置前後で測定し
た。<Surface Crack Resistance (Demachakat Grouse)> The crack width was measured before and after standing at 180 ° C. for 10 days when the crack test was performed at 50,000 times at room temperature.
【００３９】[0039]
【表１】 [Table 1]
【００４０】表１より、次のことがわかる。Table 1 shows the following.
【００４１】即ち、ポリマーとしてＥＰＭのみを用いた
比較例１、２では、耐熱老化性が著しく悪く、耐摩耗性
や耐表面クラック性についても耐熱老化試験後における
劣化が著しく、耐熱ベルトとしての長期使用に耐え得な
い。That is, in Comparative Examples 1 and 2 using only EPM as the polymer, the heat aging resistance was remarkably poor, and the abrasion resistance and surface crack resistance were significantly deteriorated after the heat aging test. It cannot be used.
【００４２】これに対して、ＥＰＭとＥＯＭをブレンド
した実施例１〜３では耐熱老化性が良好である。特に、
液状ゴムを配合した実施例１、２では、液状ゴムを配合
していない実施例３に比べて加工性に優れる。また、メ
タクリル酸亜鉛を配合した実施例１では、メタクリル酸
亜鉛を配合していない実施例２に比べて耐熱老化性、耐
摩耗性、耐表面クラック性に優れる。On the other hand, in Examples 1 to 3 in which EPM and EOM were blended, the heat aging resistance was good. Especially,
In Examples 1 and 2 in which the liquid rubber was blended, the processability was excellent as compared with Example 3 in which the liquid rubber was not blended. Further, Example 1 in which zinc methacrylate was blended was superior to Example 2 in which zinc methacrylate was not blended in heat aging resistance, abrasion resistance, and surface crack resistance.
【００４３】なお、実施例１〜５と実施例６、７との比
較から、ＥＰＭとＥＯＭとの配合比は、２０／８０〜８
０／２０の範囲とすることが好ましいことがわかる。ま
た、実施例１と実施例８との比較から、ＥＰＭはエチレ
ン含量６０モル以上の高エチレンＥＰＭであることが好
ましいことがわかる。From the comparison between Examples 1 to 5 and Examples 6 and 7, the compounding ratio of EPM and EOM is 20/80 to 8
It is understood that it is preferable to set the range to 0/20. Also, a comparison between Example 1 and Example 8 shows that the EPM is preferably a high ethylene EPM having an ethylene content of 60 mol or more.
【００４４】[0044]
【発明の効果】以上詳述した通り、本発明の耐熱ベルト
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、成形粘着加工性に優れると共に、耐
摩耗性、耐クラック性等にも優れ、長期使用に耐え得る
耐熱ベルトが提供される。As described in detail above, according to the heat-resistant belt of the present invention, it is suitable as a conveyor belt for conveying high-temperature goods in the industrial fields of steel, cement, etc. Provided is a heat-resistant belt which is excellent in adhesive workability, excellent in abrasion resistance, crack resistance, and the like, and can withstand long-term use.
【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 DESCRIPTION OF SYMBOLS 1 Canvas 2, 4 Rubber 3, 6 Heat resistant rubber belt 5 Steel cord
Claims (5)
共重合体とエチレン・プロピレン共重合体とを含有する
ゴム組成物を用いて構成されることを特徴とする耐熱ベ
ルト。1. A heat-resistant belt comprising a rubber composition containing, as a polymer, an ethylene / 1-octene copolymer and an ethylene / propylene copolymer.
ン共重合体とエチレン・プロピレン共重合体との重量比
率が２０／８０〜８０／２０の範囲であることを特徴と
する請求項１に記載の耐熱ベルト。2. The rubber composition according to claim 1, wherein the weight ratio of the ethylene / 1-octene copolymer to the ethylene / propylene copolymer is in the range of 20/80 to 80/20. Heat resistant belt as described in.
レン含有率が６０モル％以上であることを特徴とする請
求項１又は２に記載の耐熱ベルト。3. The heat resistant belt according to claim 1, wherein the ethylene content of the ethylene / propylene copolymer is 60 mol% or more.
前記ポリマー１００重量部に対して０．２〜５重量部含
有することを特徴とする耐熱ベルト。4. A heat-resistant belt, wherein the rubber composition contains 0.2 to 5 parts by weight of a metal methacrylate based on 100 parts by weight of the polymer.
ー１００重量部に対して５〜２０重量部含有することを
特徴とする耐熱ベルト。5. A heat-resistant belt, wherein the rubber composition contains 5 to 20 parts by weight of a liquid rubber based on 100 parts by weight of the polymer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05522998A JP3951415B2 (en) | 1998-03-06 | 1998-03-06 | Heat resistant belt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05522998A JP3951415B2 (en) | 1998-03-06 | 1998-03-06 | Heat resistant belt |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11246017A true JPH11246017A (en) | 1999-09-14 |
| JP3951415B2 JP3951415B2 (en) | 2007-08-01 |
Family
ID=12992789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP05522998A Expired - Fee Related JP3951415B2 (en) | 1998-03-06 | 1998-03-06 | Heat resistant belt |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3951415B2 (en) |
Cited By (6)
| 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 |
| JP2006176580A (en) * | 2004-12-21 | 2006-07-06 | Bridgestone Corp | Rubber composition for adhesive use |
| JP2011178917A (en) * | 2010-03-02 | 2011-09-15 | Yokohama Rubber Co Ltd:The | Rubber composition for heat resistant conveyer belt and heat resistant conveyer 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 |
| JP2014181265A (en) * | 2013-03-18 | 2014-09-29 | Bridgestone Corp | Rubber composition for conveyor belt, conveyor belt and belt conveyor |
| CN110758982A (en) * | 2019-11-20 | 2020-02-07 | 浙江双箭橡胶股份有限公司 | Carbon fiber core rubber conveying belt and manufacturing method thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2899235C (en) | 2013-01-29 | 2016-04-12 | The Yokohama Rubber Co., Ltd. | Rubber composition for heat-resistant conveyor belts, and heat-resistant conveyor belt |
-
1998
- 1998-03-06 JP JP05522998A patent/JP3951415B2/en not_active Expired - Fee Related
Cited By (7)
| 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 |
| JP2006176580A (en) * | 2004-12-21 | 2006-07-06 | Bridgestone Corp | Rubber composition for adhesive use |
| JP4729298B2 (en) * | 2004-12-21 | 2011-07-20 | 株式会社ブリヂストン | Adhesive rubber composition |
| JP2011178917A (en) * | 2010-03-02 | 2011-09-15 | Yokohama Rubber Co Ltd:The | Rubber composition for heat resistant conveyer belt and heat resistant conveyer belt |
| JP2014181265A (en) * | 2013-03-18 | 2014-09-29 | Bridgestone Corp | Rubber composition for conveyor belt, conveyor belt and belt conveyor |
| 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 |
| CN110758982A (en) * | 2019-11-20 | 2020-02-07 | 浙江双箭橡胶股份有限公司 | Carbon fiber core rubber conveying belt and manufacturing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3951415B2 (en) | 2007-08-01 |
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