CN1283938C - 动力传动皮带 - Google Patents
动力传动皮带 Download PDFInfo
- Publication number
- CN1283938C CN1283938C CNB021318255A CN02131825A CN1283938C CN 1283938 C CN1283938 C CN 1283938C CN B021318255 A CNB021318255 A CN B021318255A CN 02131825 A CN02131825 A CN 02131825A CN 1283938 C CN1283938 C CN 1283938C
- Authority
- CN
- China
- Prior art keywords
- belt
- driving belt
- power driving
- rubber
- ring
- 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.)
- Expired - Fee Related
Links
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Abstract
一种环状动力传动皮带，它含有：(1)拉伸部份；(2)弹性衬垫部份；(3)装置在所说的拉伸部份和弹性衬垫部份之间的载荷部份；这种皮带含有自由基熟化的弹性体组合物，后者包含以下物质的反应产物：(a)一种乙烯α-烯烃弹性体；(b)按每100份重量总橡胶(phr)计10至100份重量的非迁移性内部润滑剂，后者可选自石墨、二硫化钼、聚四氟乙烯以及它们的混合物；(c)0.1至100phr的熟化剂活性助剂，可选自有机丙烯酸酯类、有机甲基丙烯酸酯类、α，β-不饱和有机酸的金属盐类以及它们的混合物。
Description
发明背景
汽车发动机罩内用件的较高温度和用户对更宽使用温度范围和更长的保质期的要求，导致了对具有改进的高温和低温耐受性的皮带弹性体的需求。结果，乙烯-α烯烃聚合物代替了聚氯丁橡胶来作为汽车多肋三角皮带用件的主要弹性体。
然而，乙烯-α-烯烃弹性体的一个已知的缺点是它的耐磨损性低下。这类弹性体的一个固有的具体问题是，在响应动态负荷和磨耗时遭受断链的倾向。在多肋三角皮带的情况下，这种特性会导致所谓“起球”，即粘性的磨损材料积聚在皮带的凹槽中。这种现象是不希望有的皮带噪音的共同来源并且在极端的情况下，会导致皮带的突然失效。
有一些改进乙烯-α-烯烃皮带耐起球性的方法是已知的，并被描述于先有技术中。一种改进耐起球性的方法涉及使用高乙烯含量的乙烯-α-烯烃弹性体。这种方法的一个缺点是高乙烯级别的这类弹性体难于在通常用于制造动力传动带的开放式工厂和砑光机上进行加工。高乙烯含量的乙烯-α-烯烃弹性体还表现出比低乙烯含量的类似弹性体更差的低温性质，这是由于它的高玻璃化转变温度和更大的结晶程度所致。
另一种改进基于乙烯-α-烯烃弹性体化合物的耐起球性的方法，是并入具有高度韧性和耐磨损的纤维，特别是芳族聚酰胺纤维诸如在市场上以商品名称Kevlar、Twaron和Technora出售的那些。使用这些纤维来改进耐起球性被描述于一些先有的公开说明中，包括Yarnell等人(美国专利5,610,217)、Sedlacek(美国专利4,798,566)、和Takehara等人(美国专利6,177,202)。当通过切割或研磨形成这种并入了这类纤维的多肋三角皮带的凹槽时，一部份这类纤维被暴露并从皮带表面凸出。这些纤维的基本功能是尽量减小了基质弹性体和皮带轮之间的接触，而不是增进了基质弹性体本身的耐起球性。不过，使用这类纤维的主要缺点是相对于普通用于动力传动带中的其它纤维来说它们的高得多的花费。例如，芳族聚酰胺的原材料费用通常比合适的棉纤维高出20倍以上。此外，芳族聚酰胺还难于有效地分散在通常的橡胶混合设备中，从而需要更加延长和更高费用的混合操作程序。
第三种克服多肋三角皮带中起球问题的方法是在弹性体化合物中并入一种材料，它能迁移到皮带的表面并润滑皮带和皮带轮之间的接触部份。这种方法的一个实例是Connell等人(美国专利5,284,456)所描述的聚硅氧烷材料的使用。然而这一方法有一些缺点。动力传动带和皮带轮表面之间磨擦力的降低限制了载荷能力。还有，这类材料的迁移速率强烈地依赖于环境条件，而在皮带表面的浓度则依赖于环境条件和使用的频率两者。在需要极宽的工作温度范围和负载周期的汽车用件中，这将导致在某些情况下的表面润滑不足，而在另一些情况下则润滑过度。
对用于动力传动带中的弹性体所需的一种关键性质，是它在动态条件下传动载荷的有效性。在这种用件中使用的化合物因而一般要包括高水平的增强颗粒填料。炭黑和硅石是两种最常用的增强颗粒填料。不幸，这些填料当用于动力传动带中时有一些严重的缺点。一个缺点是它们会引起与其浓度成比例的耐受挠曲/疲劳性能的降低，这是由于输入到每次循环变形中的应变能增加。高含量增强颗粒填料化合物的另一个缺点是化合物迟滞性的增加，这与动态负荷条件下被化合物耗散的能量有关。高迟滞性化合物置于动态负荷下呈现出比低迟滞性化合物更大的热量聚集，加速了热老化过程并从而导致过早的失效。高迟滞性化合物也表现出比类似的低迟滞性化合物更差的耐磨损性，特别是起球。
在动力传动带中使用非迁移性内部润滑剂已被描述于，例如，Brew(美国专利4,464,153)、Standley(美国专利4,244,234)和Henderson等人(美国专利4,032,768)的专利中。在所有这些情况下，润滑剂是用来降低皮带和皮带轮之间的摩擦系数。在许多用件、特别是多肋三角皮带中，摩擦系数必须维持在某个最低值以上，相应于皮带传动的设计或用户的需要。
由于改进乙烯-α-烯烃弹性体的耐磨损性和减小迟滞性的这些已知方法具有的这些缺点，同时要保持可接受的载荷能力，因此对这样一种乙烯-α-烯烃弹性体存在需求，该弹性体应具有低迟滞性和良好的耐磨损性，特别是耐起球性，而无需使用高乙烯含量聚合物、芳族聚酰胺纤维、迁移性润滑剂或高浓度的增强颗粒填料。进一步还存在着满足这些需要而不降低弹性体和标准皮带轮之间磨擦系数的要求。
发明概述
本发明涉及一种动力传动皮带，其特征为自由基熟化的弹性体组合物中含有乙烯-α-烯烃弹性体、非迁移性内部润滑剂和熟化活化助剂的反应产物。
附图简述
附图显示了本发明的实施方案，其中图1是说明本发明环状动力传动带的一种实施方案的局部透视图。
发明详述
公开了一种环状动力传动皮带，它含有
(1)拉伸部份；
(2)弹性衬垫部份；
(3)安置在所说的拉伸部份和弹性衬垫部份之间的载荷部份；这种皮带包含自由基熟化的弹性体组合物，它含有以下物质的反应产物：
(a)一种乙烯-α-烯烃弹性体；
(b)按每100份总橡胶重量计(phr)10至100份的非迁移性内部润滑剂，可选自石墨、二硫化钼、聚四氟乙烯以及它们的混合物；
(c)0.1至100phr熟化剂活性助剂，可选自有机丙烯酸酯类、有机甲基丙烯酸酯类、α，β-不饱和有机酸的金属盐类以及它们的混合物。
现在参照所附图形的图1，它是说明本发明的环状动力传动带结构或皮带的，在图中一般性地用数字20来标明皮带。按照本领域已知的技术，皮带20特别适宜于结合三角皮带轮一起使用。这种皮带特别适合用于短中心传动、运动设备、汽车传动、农场设备、所谓转矩传感传动、有可变的皮带张力施加于皮带上的冲击载荷的用件、要求皮带以可变速度操作的用件、皮带以弹簧支承负荷来控制其张力的用件等。
这种皮带20包含拉伸部份21、弹性衬垫部份23以及安置在拉伸部份21和弹性衬垫部份23之间的载荷部分25。这种皮带20供选择地可具有里面的层片或内部的织物层(未显示)，粘附到传动表面28和三根肋条29或涂布了织物的三角带上。图1所示的皮带20具有织物的里壁30。这种织物里壁30可以是双向的、非编织的、编织成的或编织的织物。织物里壁层30可以擦胶、浸渍、伸展、涂布或分层。
载荷部份25具有以载荷索31或载荷丝形式的载荷方式，它被适当地按照本领域众所周知的技术嵌入在弹性体衬垫或基质33中。载荷索31或丝可由任何本领域中已知的适当材料制成。这类材料有代表性的实例包括芳族聚酰胺、纤维玻璃、尼龙、聚酯、棉、钢、碳纤维和聚苯并噁唑。
图1中的皮带20的传动表面28是多条三角形凹槽。按照其它实施方案，这里打算使本发明的皮带也包括那些皮带的传动表面是平的、单一三角凹槽的和同步的皮带。同步皮带的有代表性的实例包括具有梯形或带曲线形齿的传动皮带。齿形设计可具有螺旋偏置轮齿的设计，诸如在美国专利5,209,705和5,421,789中所示的。
图1的皮带20具有一个传动面28，但是在这里期望这种皮带也可以有两个传动表面(图中未显示)，诸如在双面皮带中那样。在这样的实例中，其中一个传动表面或者两个传动表面可以是像这里所描述的那样是用织物做的。最好是这种皮带20只有一个传动表面。
用于拉伸部份21、弹性衬垫部份23和载荷部份25的弹性组合物可以是相同或不同的。
用于拉伸部份21和/或弹性衬垫部份23和载荷部份25的弹性组合物中，包含一种乙烯-α-烯烃橡胶或弹性体。除了乙烯-α-烯烃橡胶或弹性体以外，也可以用其它橡胶。一般而言，按总橡胶重量计的50至100份是乙烯-α-烯烃弹性体。优选按重量计70至100份是乙烯-α-烯烃弹性体。乙烯-α-烯烃弹性体包括由乙烯和丙烯单元(EPM)、乙烯和丁烯单元、乙烯和戊烯单元或乙烯和辛烯单元(EOM)所形成的共聚物，以及乙烯和丙烯单元和一种不饱和组份(EPDM)、乙烯和丁烯单元和一种不饱和组份、乙烯和戊烯单元和一种不饱和组份、乙烯和辛烯和一种不饱和组份所形成的三元共聚物，以及它们的混合物。作为三元共聚物的不饱和组份，可以用任何合适的非共轭的双烯，包括，例如1，4-己二烯、二环戊二烯或亚乙基降冰片烯(ENB)。在本发明中优选的乙烯-α-烯烃弹性体含有按重量计约35％至按重量计约90％的乙烯单元，按重量计约65％至按重量计约5％的丙烯或辛烯单元以及按重量计0至10％的不饱和组份。在一个更优选的实施方案中，这种乙烯-α-烯烃弹性体中包含按重量计约50％至约70％的乙烯单元以及，在最优选的实施方案中，这种乙烯-α-烯烃弹性体中包含按重量计约55％至约65％的乙烯单元。这种最优选的乙烯-α-烯烃弹性体是EPDM。
当除了乙烯-α-烯烃弹性体以外还想用一种橡胶时，这种另外的橡胶含量应为所用总橡胶重量计的0至50份范围以内。这类橡胶可选自硅氧橡胶、聚氯丁橡胶、表氯醇橡胶、丙烯腈橡胶、氢化的丙烯腈橡胶、不饱和羧酸酯的锌盐接枝的氢化丁腈弹性体、天然橡胶、合成的顺-1，4-聚异戊二烯橡胶、苯乙烯-丁二烯橡胶、乙烯-醋酸乙烯基酯共聚物、乙烯甲基丙烯酸酯共聚物和三元共聚物，氯化的聚乙烯、氯磺化的聚乙烯、烷基化的氯磺化聚乙烯、反式-聚辛烯、聚丙烯酸橡胶、非丙烯酸化的顺式-1，4-聚丁二烯以及它们的混合物。最好是，按重量计总的100份弹性体中有按重量计0至30份的一种或多种上面列举的橡胶。
含有这种乙烯-α-烯烃弹性体和供选择的第二种橡胶的弹性体组合物，可被用于拉伸部份、弹性衬垫部份、载荷部份，或这些部份中的两部份或用于所有三部份中。最好是，这种弹性体组合物是用于弹性衬垫部份中。
用于本发明的皮带中的这种弹性体组合物中，含有一种非迁移性内部润滑剂。术语“非迁移性”是想用来排除那些在弹性体基质内能运动和移动的润滑剂。这类被术语“非迁移性”所排除的迁移性润滑剂的实例有油类、聚硅氧烷和蜡类。术语“内部的”是打算用来指这种润滑剂是混合或一起相混于包含该化合物的乙烯-α-烯烃橡胶中的。用于本发明中的合适的非迁移性内部润滑剂的有代表性的实例包括石墨、二硫化钼、聚四氟乙烯、以及它们的混合物。石墨可以是天然的或合成的。这种非迁移性内部润滑剂的含量可在10至100phr范围内变化。最好是，浓度范围为10至60phr，最优选20至40phr。
一种自由基交联反应被用来熟化在皮带中的含有组合物的橡胶。反应可经由紫外熟化体系或过氧化物熟化体系。可以使用的众所周知的过氧化物类包括二酰基过氧化物、过氧酯类、二烷基过氧化物和过氧缩酮类。具体的实例包括二枯基过氧化物、4，4-二(叔丁基过氧)戊酸正丁酯、1，1-二(叔丁基过氧)-3，3，5-三甲基环己烷、1，1-二(叔丁基过氧)环己烷、1，1-二(叔戊基过氧)环己烷、3，3-二(叔丁基过氧)丁酸乙酯、3，3-二(叔戊基过氧)丁酸乙酯、2，5-二甲基-2，5-二(叔丁基过氧)己烷、叔丁基枯基过氧化物、α，α′-双(叔丁基过氧)二异丙基苯、二叔丁基过氧化物、2，5-二甲基-2，5-二(叔丁基过氧)-3-己炔、过氧苯甲酸叔丁基酯、4-甲基-4-叔丁基过氧-2-戊酮以及它们的混合物。优选的过氧化物是2，5-二甲基-2，5-二(叔丁基过氧)己烷。过氧化物典型的用量在0.1至12phr范围内(基于活性过氧化物的份数)。最好是，过氧化物的用量在2至6phr范围内。
在自由基交联反应过程中存在一种活性助剂。活性助剂是单官能团和多官能团的不饱和有机化合物，它和自由基引发剂结合使用以达到改进的固化性质。有代表性的实例包括有机丙烯酸酯、有机甲基丙烯酸酯、α，β-不饱和有机酸的金属盐类以及它们的混合物。
活性助剂存在的浓度可以有一定范围。一般地说，活性助剂存在的量在0.1至100phr范围内。当然，活性助剂的浓度应依赖于所用活性助剂的种类。最好是，活性助剂存在的量在20至60phr范围内。
如上所述，一类活性助剂是丙烯酸酯和甲基丙烯酸酯。这类活性助剂的有代表性的实例包括二、三、四和五官能团的丙烯酸酯和二、三、四和五官能团的甲基丙烯酸酯以及它们的混合物。这类活性助剂的具体实例包括1，3-丁二醇的二丙烯酸酯、1，3-丁二醇的二甲基丙烯酸酯、1，4-丁二醇的二丙烯酸酯、1，4-丁二醇的二甲基丙烯酸酯、1，6-己二醇的二丙烯酸酯、1，6-己二醇的二甲基丙烯酸酯、丙烯酸2-己氧乙基酯、烷氧化的二丙烯酸酯、烷氧化的丙烯酸壬基酚酯、甲基丙烯酸烯丙基酯、丙烯酸己内酯、环己烷二甲醇的二丙烯酸酯、环己烷二甲醇的二甲基丙烯酸酯、二甘醇的二丙烯酸酯、二甘醇的二甲基丙烯酸酯、一缩二季戊四醇的五丙烯酸酯、一缩二丙二醇的二丙烯酸酯、二-三羟甲基丙烷的四丙烯酸酯、乙氧化的三羟甲基丙烷三丙烯酸酯、乙氧化的双酚A的二甲基丙烯酸酯、乙氧化的壬基酚丙烯酸酯、乙氧化的四溴双酚A的二丙烯酸酯、乙氧化的双酚A的二丙烯酸酯、乙氧化的双酚二甲基丙烯酸酯、乙氧化三羟甲基丙烷的三丙烯酸酯，乙氧化的双酚A的二丙烯酸酯、乙二醇的二甲基丙烯酸酯、甲基丙烯酸缩水甘油基酯、高度丙氧化的甘油三丙烯酸酯、丙烯酸异冰片酯、甲基丙烯酸异冰片酯、丙烯酸异癸基酯、甲基丙烯酸异癸基酯、丙烯酸异辛基酯、丙烯酸月桂酯、甲氧基聚乙二醇的单甲基丙烯酸酯、甲氧基聚乙二醇的单甲基丙烯酸酯、新戊二醇的二丙烯酸酯、新戊二醇的二甲基丙烯酸酯、丙烯酸辛基癸基酯、五丙烯酸酯、季戊四醇四丙烯酸酯、季戊四醇三丙烯酸酯、聚乙二醇二丙烯酸酯、聚乙二醇的二甲基丙烯酸酯、丙氧化的甘油三丙烯酸酯、丙氧化的新戊二醇二丙烯酸酯、丙氧化的甲基丙烯酸烯丙基酯、丙氧化的甘油三丙烯酸酯、丙氧化的三羟甲基丙烷三丙烯酸酯、丙氧化的三羟甲基丙烷三丙烯酸酯、丙烯酸硬脂基酯、甲基丙烯酸硬脂基酯、四甘醇二丙烯酸酯、四甘醇二甲基丙烯酸酯、丙烯酸四氢呋喃甲基酯、甲基丙烯酸四氢呋喃甲基酯、丙烯酸十三烷基酯、甲基丙烯酸十三烷基酯、三甘醇二丙烯酸酯、三甘醇二甲基丙烯酸酯、三官能团丙烯酸酯、三官能团甲基丙烯酸酯、三羟甲基丙烷三丙烯酸酯、三羟甲基丙烷三甲基丙烯酸酯、三丙二醇二丙烯酸酯、三丙二醇二丙烯酸酯、三(2-羟乙基)异氰脲酸三丙烯酸酯、三(2-羟乙基)异氰脲酸三丙烯酸酯以及三(2-羟乙基)异氰脲酸三甲基丙烯酸酯。
α，β-不饱和有机酸的金属盐类包括一些酸的金属盐类，这些酸包括丙烯酸，甲基丙烯酸、马来酸、富马酸、乙基丙烯酸、乙烯基丙烯酸、衣康酸、甲基衣康酸、乌头酸、甲基乌头酸、巴豆酸、α-甲基巴豆酸、肉桂酸和2，4-二羟基肉桂酸。金属部份可以是锌、镉、钙、镁、钠或铝。优选二丙烯酸锌和二甲基丙烯酸锌。
普通的炭黑也可以存在于这种组合物中。这类炭黑的用量范围在0至250Dhr之间。本发明的一个优点是可能去除这样的增强填料。可以使用的炭黑的有代表性的实例包括那些已知以ASTM标准名称指定的炭黑，即N110、N121、N242、N293、N299、N315、N326、N330、N332、N339、N343、N347、N351、N358、N375、N550、N582、N630、N624、N650、N660、N683、N754、N762、N907、N908、N990、和N991。
可以加入各种非炭黑增强填料和/或增强剂来增加橡胶组合物的强度和完整性，以制造本发明的动力传动带。增强剂的实例有硅石、滑石、碳酸钙等。这类非炭黑增强剂可以使用的量在约0至80phr、优选约0至20phr范围内。
本领域的技术人员很容易理解，这种橡胶组合物要用橡胶配合领域中一般已知的方法来配合，诸如把各种组成的橡胶和各种普通使用的添加剂材料进行混合，添加剂材料有，例如，熟化助剂和加工添加剂诸如油类，树脂类包括增粘树脂和增塑剂，填充剂，颜料，脂肪酸，蜡类，抗氧剂和抗臭氧剂等。上述添加剂被选择并以通常用量来使用。
如果使用，增粘树脂的典型用量为约0.5至约10phr，通常约1至约5phr。加工助剂的用量为约1至约50phr。这类加工助剂可包括，例如，聚乙二醇、脂环烃和/或链烷烃类的加工油类。抗氧剂的典型含量为约1至约5phr。一种有代表性的抗氧剂是三甲基二氢喹啉。如果使用，典型的脂肪酸用量，包括硬脂酸，为约0.5至约3phr。典型的蜡类用量为约1至约5phr。常用的蜡有微晶蜡和巴西棕榈蜡。如果使用，典型的增塑剂的含量为1至100phr。这类增塑剂的有代表性的实例包括癸二酸二辛酯、氯化石蜡等。
这种弹性体组合物还可含有遍布其中的纤维或短纤维。遍布在弹性体混合物中的纤维或短纤维可以是任何一种合适的材料并优选非金属纤维诸如棉线或由合适的合成材料做成的纤维，包括芳族聚酰胺、尼龙、聚酯、纤维玻璃等。每种纤维的直径范围应在0.001英寸至0.050英寸(0.025毫米至1.3毫米)之间，并且长度范围在0.001英寸至0.5英寸(0.025毫米至12.5毫米)之间。这种纤维的用量范围为5至50phr。
橡胶组合物的混合可用橡胶混合工艺中技术人员所熟知的那些方法来完成。例如，可将各种橡胶成份一步混合，但典型做法是分成至少两步来混合，即至少包括一步非生产性的步骤，接着一步生产性的混合步骤。最终的熟化剂包括固化剂典型地是在这最后步骤中混合的，它通常被称为“生产性”的混合步骤，其中混合步骤典型地是在低于前面的非生产性混合步骤的混合温度下发生的，该温度又称极限温度。
用于皮带的橡胶组合物的熟化一般是在约160℃至190℃的普通温度范围内进行。最好是，熟化过程是在约170℃至180℃的温度范围内实施的。
如本领域技术人员已知的那样，动力传动带可以依赖于一种转筒装置来制造。首先，把里壁材料以片材形式施加到转筒上。其次，把任何拉伸部份以片材形式施加到转筒上，接着通过盘旋把线材或拉伸构件(载荷部份)施加到转筒上。此后施加弹性衬垫部份，接着是织物，如果使用后者的话。把装配好的叠层或平板和转筒一起放入模具中并熟化。熟化后，肋材用本领域技术人员已知的方法被切割成平板，平板再被切割成皮带。
实施例I
按表1中说明的处方制备三个试样，试样1由于不含非迁移性内部润滑剂而被当作对照物。试样3由于不存在熟化剂活性助剂而被当作对照物。所有成份，除过氧化物以外，是以非生产性混合步骤被加入的。
表1
| 对照物 对照物 | |||
| 试样1 | 试样2 | 试样3 | |
| EPDM1二丙烯酸锌2合成石墨3炭黑4棉束5抗氧剂6过氧化物7 | 100400302024 | 100403002024 | 10003002024 |
表中注1：Nordel IP 4640是一种可从Dupont Dow Elastomer Inc.买到的EPDM橡胶，它含有按重量计55％的乙基单位、按重量计40％的丙烯单位和按重量计5％的不饱和组份。
注2：用可从Sartomer公司买到的Saret 633。
注3：用可从Asburg Graphite公司买到的A 625。
注4：用N220炭黑。
注5：用可从Akrochem Corporation买到的Akroflock棉花。
注6：用聚合的1，2-去氢-2，2，4-三甲基喹啉。
注7：用2，5-二甲基-2，5-二(叔丁基过氧)己烷。
表2
| 对照物 对照物 | |||
| 试样1 | 试样2 | 试样3 | |
| F43起球(1至10，以10为最佳)1W57耐久性挠曲(至断裂时的小时数) | 7207+ | 8.25309+ | 5250 |
表中注1：为测量对起球或凹槽淤塞的耐受性，可将皮带置于两项皮带轮试验。驱动轮测量121毫米直径，从动轮是一只截短了的尼龙空转轮，直径76毫米。驱动速度在77为3500转/分，驱动48小时。悬重160磅，皮带是由六条长度为1200毫米的带肋皮带组成的。然后对皮带通过目测评分，记分从1至10(10为最好)。
注2：试验说明书编号SAE J1459。
对照试样1和试样2是炭黑与石墨的比较。石墨皮带显示出增加的挠曲性和耐久性以及比装炭黑的皮带更好的耐起球性。
试样2和对照试样3是ZDA对非ZDA石墨化合物的比较。非ZDA化合物显示出耐久寿命的降低并且在起球试验中起球现象要严重得多。
尽管本发明的示例性实施方案和实施方法已得到了说明和叙述，但应该理解本发明在以下权利要求的范围以内，也可以有其它体现和实施的方案。
Claims (10)
1.一种环状动力传动皮带，其特征为具有：
(1)拉伸部份；
(2)弹性衬垫部份；和
(3)装置在所说的拉伸部份和弹性衬垫部份之间的载荷部份；这种皮带含有自由基熟化的弹性体组合物，后者包含以下物质的反应产物：
(a)一种乙烯α-烯烃弹性体；
(b)按每100份重量总橡胶(phr)计10至100份重量的非迁移性内部润滑剂，后者可选自石墨、二硫化钼、聚四氟乙烯以及它们的混合物；和
(c)20至60phr的熟化剂活性助剂，可选自有机丙烯酸酯类、有机甲基丙烯酸酯类、α，β-不饱和有机酸的金属盐类以及它们的混合物。
2.权利要求1的环状动力传动皮带，其特征为所说的弹性体组合物中含有：
(1)按重量计50至100份乙烯α烯烃弹性体；和
(2)按重量计0至50份的橡胶，它可选自硅氧橡胶、聚氯丁橡胶、表氯醇橡胶、丙烯腈橡胶、氢化的丙烯腈橡胶，不饱和羧酸酯的锌盐接枝的氢化丁腈弹性体、天然橡胶、苯乙烯-丁二烯橡胶、乙烯-醋酸乙烯基酯共聚体、乙烯甲基丙烯酸酯共聚物和三元共聚物、氯化的聚乙烯、氯磺化的聚乙烯、烷基化氯磺酸化的聚乙烯、反式聚辛烯体、聚丙烯酸橡胶以及它们的混合物。
3.权利要求1的环状动力传动皮带，其特征为所说的弹性体组合物已经用过氧化物熟化，过氧化物可选自二酰基过氧化物、过氧酯类、二烷基过氧化物、和过氧缩酮类。
4.权利要求1的环状动力传动皮带，其特征为内部非迁移性润滑剂的含量在10至60phr范围内。
5.权利要求1的环状动力传动皮带，其特征为内部非迁移性润滑剂的含量在20至40phr范围内。
6.权利要求1的环状动力传动皮带，其特征为非迁移性润滑剂是石墨。
7.权利要求1的环状动力传动皮带，其特征为用在弹性体组合物内按重量计的100份橡胶是一种乙烯-α-烯烃弹性体。
8.权利要求1的环状动力传动皮带，其特征为所说的乙烯-α-烯烃弹性体是乙烯-丙烯-二烯三元共聚物。
9.权利要求1的环状动力传动皮带，其特征为所说的活性助剂是选自二丙烯酸锌、二甲基丙烯酸锌、二丙烯酸钙、乙二醇二甲基丙烯酸酯、二甘醇二甲基丙烯酸酯、1，3-丁二醇二甲基丙烯酸酯、环己烷二甲醇二丙烯酸酯、三羟甲基丙烷三甲基丙烯酸酯以及它们的混合物。
10.权利要求3的动力传动皮带，其特征为所说的过氧化物是选自二枯基过氧化物、4，4-二(叔丁基过氧)戊酸正丁酯、1，1-二(叔丁基过氧)-3，3，5-三甲基环己烷、1，1-二(叔丁基过氧)环己烷、1，1-二(叔戊基过氧)环己烷、3，3-二(叔丁基过氧)丁酸乙酯、3，3-二(叔戊基过氧)丁酸乙酯、2，5-二甲基-2，5-二(叔丁基过氧)己烷、叔丁基枯基过氧化物、α，α′-双(叔丁基过氧)二异丙基苯、二叔丁基过氧化物、2，5-二甲基-2，5-二(叔丁基过氧)-3-己炔、过苯甲酸叔丁基酯、4-甲基-4-叔丁基过氧-2-戊酮、以及它们的混合物；并且其中所说的过氧化物存在的量在0.1至12phr范围内。
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| JP4772292B2 (ja) * | 2003-05-30 | 2011-09-14 | 三ツ星ベルト株式会社 | 伝動ベルト |
| US20060084543A1 (en) * | 2004-10-20 | 2006-04-20 | The Goodyear Tire & Rubber Company. | Apparatus and method for controlling rubber flow in positive drive belts |
| JP4268923B2 (ja) * | 2004-10-26 | 2009-05-27 | 住友ゴム工業株式会社 | タイヤトレッド用ゴム組成物およびそれからなる空気入りタイヤ |
| US7909720B2 (en) * | 2004-12-31 | 2011-03-22 | Veyance Technologies, Inc. | Fabric adhesion improvement for EPDM based low cost timing belt |
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| JP4424747B2 (ja) * | 2005-03-22 | 2010-03-03 | バンドー化学株式会社 | ベルト伝動装置 |
| US7695386B2 (en) * | 2005-06-16 | 2010-04-13 | Veyance Technologies, Inc. | Fabric treatment for reinforced elastomeric articles |
| JP4932338B2 (ja) * | 2005-09-30 | 2012-05-16 | 三ツ星ベルト株式会社 | 摩擦伝動ベルト |
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| JP4322269B2 (ja) * | 2006-07-28 | 2009-08-26 | バンドー化学株式会社 | Ｖリブドベルト及びベルト伝動装置 |
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| CN105683618B (zh) * | 2013-11-08 | 2020-09-29 | 阪东化学株式会社 | 聚氨酯制传动皮带及皮带成形用材料 |
| CN107532681B (zh) * | 2015-04-24 | 2020-11-06 | 阪东化学株式会社 | 传动带 |
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| DE60228374D1 (de) | 2008-10-02 |
| MXPA02008162A (es) | 2003-03-10 |
| CN1480660A (zh) | 2004-03-10 |
| ATE405609T1 (de) | 2008-09-15 |
| EP1300442A1 (en) | 2003-04-09 |
| BR0203405A (pt) | 2003-05-20 |
| EP1300442B1 (en) | 2008-08-20 |
| KR100861856B1 (ko) | 2008-10-07 |
| KR20030022051A (ko) | 2003-03-15 |
| US20030050144A1 (en) | 2003-03-13 |
| BR0203405B1 (pt) | 2012-09-04 |
| US6855082B2 (en) | 2005-02-15 |
| JP2003139197A (ja) | 2003-05-14 |
| AR036279A1 (es) | 2004-08-25 |
| CA2395045A1 (en) | 2003-03-06 |
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