CN106061870A - 对环境友好的橡胶组合物 - Google Patents
对环境友好的橡胶组合物 Download PDFInfo
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- CN106061870A CN106061870A CN201580011420.2A CN201580011420A CN106061870A CN 106061870 A CN106061870 A CN 106061870A CN 201580011420 A CN201580011420 A CN 201580011420A CN 106061870 A CN106061870 A CN 106061870A
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- rubber
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- 239000005060 rubber Substances 0.000 title claims abstract description 165
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- 244000043261 Hevea brasiliensis Species 0.000 claims description 6
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 6
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- 229920001194 natural rubber Polymers 0.000 claims description 6
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 5
- 150000001875 compounds Chemical class 0.000 claims description 5
- QAZLUNIWYYOJPC-UHFFFAOYSA-M sulfenamide Chemical compound [Cl-].COC1=C(C)C=[N+]2C3=NC4=CC=C(OC)C=C4N3SCC2=C1C QAZLUNIWYYOJPC-UHFFFAOYSA-M 0.000 claims description 5
- ZEMPKEQAKRGZGQ-AAKVHIHISA-N 2,3-bis[[(z)-12-hydroxyoctadec-9-enoyl]oxy]propyl (z)-12-hydroxyoctadec-9-enoate Chemical compound CCCCCCC(O)C\C=C/CCCCCCCC(=O)OCC(OC(=O)CCCCCCC\C=C/CC(O)CCCCCC)COC(=O)CCCCCCC\C=C/CC(O)CCCCCC ZEMPKEQAKRGZGQ-AAKVHIHISA-N 0.000 claims description 4
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical class C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 claims description 4
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- 239000006229 carbon black Substances 0.000 claims description 4
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- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 claims description 3
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 3
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- ZRMMVODKVLXCBB-UHFFFAOYSA-N 1-n-cyclohexyl-4-n-phenylbenzene-1,4-diamine Chemical compound C1CCCCC1NC(C=C1)=CC=C1NC1=CC=CC=C1 ZRMMVODKVLXCBB-UHFFFAOYSA-N 0.000 claims 2
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- ZNRLMGFXSPUZNR-UHFFFAOYSA-N 2,2,4-trimethyl-1h-quinoline Chemical compound C1=CC=C2C(C)=CC(C)(C)NC2=C1 ZNRLMGFXSPUZNR-UHFFFAOYSA-N 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 2
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- IELAVJDOWOPAMD-UHFFFAOYSA-N 4-n-hexylbenzene-1,4-diamine Chemical compound CCCCCCNC1=CC=C(N)C=C1 IELAVJDOWOPAMD-UHFFFAOYSA-N 0.000 description 1
- -1 Antiozonant Substances 0.000 description 1
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- 238000012271 agricultural production Methods 0.000 description 1
- 230000003466 anti-cipated effect Effects 0.000 description 1
- KVBYPTUGEKVEIJ-UHFFFAOYSA-N benzene-1,3-diol;formaldehyde Chemical compound O=C.OC1=CC=CC(O)=C1 KVBYPTUGEKVEIJ-UHFFFAOYSA-N 0.000 description 1
- 235000010216 calcium carbonate Nutrition 0.000 description 1
- GJYLKIZKRHDRER-UHFFFAOYSA-N calcium;sulfuric acid Chemical compound [Ca].OS(O)(=O)=O GJYLKIZKRHDRER-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- D06M11/79—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with silicon or compounds thereof with silicon dioxide, silicic acids or their salts
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- D06M13/184—Carboxylic acids; Anhydrides, halides or salts thereof
- D06M13/188—Monocarboxylic acids; Anhydrides, halides or salts thereof
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- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
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Abstract
本发明提供用于传送带的带材。该带材包括织物基材和对环境友好的橡胶组合物。该对环境友好的橡胶组合物被施加到该织物基材的至少一个表面。该对环境友好的橡胶组合物包含橡胶组分、填充剂、加工油和硫化剂。该填充剂以约50至150份每百重量份橡胶组合物的浓度提供。该加工油基本上不含芳族油。该加工油以约20至60份每百重量份橡胶组合物的浓度提供。该硫化剂以约1至10份每百重量份橡胶组合物的浓度提供。
Description
本申请要求2014年9月17日提交的第62/051,755号美国临时申请的优先权,该临时申请的内容以引用方式并入本文。
技术领域
本发明主要涉及对环境友好的橡胶组合物。更具体地讲,本发明涉及用于制作传送带的对环境友好的橡胶组合物。
背景技术
传送带由于具有运送大量的材料的能力,长期以来在产业中用于例如运送农产品、石头和其他开采材料以及各种制造产品。
传送带广泛使用的一个领域是用于运送农产品的设备,特别是用于收割的农用设备。宽纵横比(wide-aspect)的带在农场机械特别是收割机中广泛使用,其例子在第4,371,580号和第4,518,647号美国专利中有讨论。
在许多用于制作传送带的橡胶配方中,通常使用基于芳族石油的油作为加工助剂。出于环境和/或健康方面的多种原因,希望减少和/或取消这种基于芳族石油的油的使用。
Sandstrom等人的第2014/0135424号美国专利涉及使用天然橡胶并使用大豆油代替基于石油的加工油作为加工助剂而制作的橡胶组合物。
Sandstrom等人的第2014/0135437号美国专利涉及使用基于共轭二烯的弹性体并使用大豆油代替基于石油的加工油作为加工助剂而制作的橡胶组合物。
发明内容
本发明的一个实施方案涉及用于传送带的带材。该带材包括织物基材和施加于该织物基材的至少一个表面的对环境友好的橡胶组合物。该对环境友好的橡胶组合物包含橡胶组分、填充剂、加工油和硫化剂。
该填充剂以约50至150份每百重量份橡胶组合物的浓度提供。该加工油基本上不含芳族油。该加工油以约20至60份每百重量份橡胶组合物的浓度提供。该硫化剂以约1至10份每百重量份橡胶组合物的浓度提供。
本发明的另一个实施方案涉及一种对环境友好的橡胶组合物,该对环境友好的橡胶组合物包含橡胶组分、填充剂、加工油和硫化剂。该加工油基本上不含芳族油。该加工油以约20至60份每百重量份橡胶组合物的浓度提供。该硫化剂以约1至10份每百重量份橡胶组合物的浓度提供。
本发明的一个实施方案涉及一种制备用于传送带的带材的方法。从橡胶组分、填充剂、加工油和硫化剂制备一种对环境友好的橡胶组合物。该填充剂以约50至150份每百重量份橡胶组合物的浓度提供。该加工油基本上不含芳族油。该加工油以约20至60份每百重量份橡胶组合物的浓度提供。该硫化剂以约1至10份每百重量份橡胶组合物的浓度提供。将该橡胶组合物与一种织物基材结合以形成经涂覆的带。将该经涂覆的带硫化以形成该传送带。
附图说明
本申请文件包括附图以便进一步理解本发明的实施方案,附图并入本申请文件中构成本申请文件的一部分。附图对实施例进行图示说明,并且与本说明书一起用于阐释实施方案的原理。其他实施方案以及各个实施方案的许多预期优点将容易地被认识到,因为参考下文的“具体实施方式”可更好地理解这些其他实施方案和这些预期优点。附图中的各元件相互之间未必符合比例。同样的附图标记表示相应的类似部件。
图1是比较用芳族油制作的橡胶与用几种不同浓度大豆油制作的橡胶样品的拉伸强度的图。
图2是比较用芳族油制作的橡胶与用几种不同浓度大豆油制作的橡胶样品的伸长率的图。
图3是比较用芳族油制作的橡胶与用几种不同浓度大豆油制作的橡胶样品的300%弹性模量的图。
图4是比较用芳族油制作的橡胶与用几种不同浓度大豆油制作的橡胶样品的门尼粘度低(Mooney viscosity low)的图。
图5是比较用芳族油制作的橡胶与用几种不同浓度大豆油制作的橡胶样品的撕裂强度的图。
图6是比较用芳族油制作的橡胶与用几种不同浓度大豆油制作的橡胶样品的Din磨耗指数的图。
具体实施方式
传送带在非常多的应用中得到使用,因为传送带能使大量的产品有效地被运送。传动带通常包括两个主要部件:(1)织物基材和(2)橡胶涂层。取决于传送带的预期用途,可在传送带上间隔地附上加劲条(cleat)以提高传送带的运送能力。可根据多种因素,如在传送带上运送的产品,来选择传送带上的加劲条的形状、尺寸和布置。
织物基材通常以两种形式提供——纺成织物和长丝织物。纺成织物是从短纤维制成的:将短纤维纺成细丝,然后将细丝编成纺成织物。相反,长丝织物是从挤出的连续长丝线形成的。有多种因素会影响到在制作特定的传送带时使用哪种类型的织物。
织物基材涂覆橡胶的技术主要有两种——擦过涂敷(skim coating)和摩擦涂覆(friction coating)。在擦过涂敷时,使一层橡胶材料置于织物基材上,但不迫使橡胶材料进入织物基材上的编织(weave)中。相反,摩擦涂覆使用辊压机将橡胶施加到织物基材,辊压机的各个辊以不同的表面速度运行以迫使橡胶进入织物基材上的编织中。
有多种因素会影响到使用哪种技术将橡胶组合物被施加到织物基材。例如,虽然通常认为擦过涂敷适用于多种织物,但擦过涂敷提供的橡胶层通常比摩擦涂覆提供的橡胶层要厚得多。在某些实施方案中,这个增加的橡胶厚度可能是不合需要的,因为它增加传送带的总体重量。
在用橡胶组合物涂覆织物基材之前,可对织物基材进行处理以增强橡胶粘附性,一个处理例子包括将一层间苯二酚甲醛乳胶施加到织物基材的表面。在将橡胶组合物涂覆在织物基材上之后,可以使用另外的技术提高橡胶组合物的强度和/或耐久性,所述技术的例子包括加压和加热。
橡胶组合物的主要组分之一是橡胶组分。出于这个原因,通常设定橡胶组合物中使用的其他组分的浓度与橡胶组分的量的比率。
橡胶组分可以是天然橡胶或者天然橡胶和合成橡胶的混合物。一种类型的可用于制作传送带的合成橡胶的例子是苯乙烯-丁二烯橡胶。本领域技术人员会认识到,采用本发明的构思,苯乙烯-丁二烯橡胶可具有多种组合物。
橡胶组合物含有填充剂。合适的填充剂的例子包括炭黑、二氧化硅、碳酸钙、硫酸钙、粘土、云母以及它们的组合。在某些实施方案中,填充剂以约50至150份每百重量份橡胶组合物的浓度提供。在其他实施方案中,填充剂以约100份每百重量份橡胶组合物的浓度提供。
橡胶组合物含有至少一种有利于橡胶组合物的加工的加工油。在某些实施例中,加工油的至少一部分源自谷物(cereal)如蓖麻油、椰子油、棉籽油、亚麻籽油、菜籽油、大豆油、棕榈油和花生油。在其他实施方案中,加工油基本上源自谷物。
加工油以约10至70份每百重量份橡胶组合物的浓度提供。在其他实施方案中,
在某些实施方案中,加工油基本上不含芳族油。不使用芳族油来配制橡胶组合物的一个优点是,在将橡胶组合物制作成产品的过程中,或者在使用从橡胶组合物制造的产品的过程中,都可避免与人们接触这种芳族油相关的潜在不利健康问题。
不使用芳族油来配制橡胶组合物的另一个优点是,上述的源自谷物的油是源自可再生资源的,而芳族油通常源自化石燃料。
已发现,使用源自谷物的油代替芳族油的又一个优点是,源自谷物的油的使用浓度可以比配制用于带材应用的橡胶时常规使用的芳族油浓度显著地更低。
在某些实施方案中,在配制橡胶时使用的源自谷物的油的浓度,比配制用于带材应用的橡胶时常规使用的芳族油浓度低至少25%。时
在其他实施例中,加工油(processing oil)的一小部分(即低于50每百重量份)包含石蜡族、环烷族或芳族操作油(process oil)、乙烯-α-烯烃共低聚物、矿物油如固体石腊和液体石蜡。在另外其他实施方案中,该另外油组分的浓度低于约5份每百重量份橡胶组合物。
橡胶组合物可包含至少一种硫化剂。合适的硫化剂的例子包括硫和有机过氧化物。在某些实施方案中,硫化剂的浓度约1至10份每百重量份橡胶组合物。在其他实施方案中,硫化剂的浓度约2至5份每百重量份橡胶组合物。
橡胶组合物可包含至少一种抗氧化剂。合适的抗氧化剂的例子包括N-苯基-N'-环己基-对苯二胺、N-(1,3-二甲丁基)-N'-苯基-对苯二胺和2,2,4-三甲基-1,2-二氢喹啉。在某些实施方案中,抗氧化剂以最多约10份每百重量份橡胶组合物的浓度提供。在其他实施方案中,抗氧化剂以约0.5至3.0份每百重量份橡胶组合物的浓度提供。
橡胶组合物还可掺有活化剂和加速剂,以进一步改进固化速度。潜在的活化剂和加速剂的例子包括氧化锌、硬脂酸、二苯胍、N-叔丁基-2-苯并噻唑次磺酰胺、二硫化四甲基秋兰姆和次磺酰胺(N-氧二乙撑-2-苯并噻唑次磺酰胺)。在某些实施方案中,活化剂和加速剂以约1至10份每百重量份橡胶组合物的浓度提供。
本发明的橡胶组合物可任选包含其他添加剂。这类添加剂的例子是抗老化剂、蜡、抗臭氧剂、抗氧化剂、发泡剂、增塑剂、内部润滑剂、增粘剂和紫外线吸收剂。这类添加剂各自以有效浓度提供。在某些实施方案中,这类添加剂中的每一种的浓度低于约3份每百重量份橡胶组合物。
当橡胶组合物用于织物基材的摩擦涂覆时,增粘剂可能特别合乎需要。用于本发明的橡胶组合物的增粘剂可与用于常规橡胶组合物的增粘剂相似。
在某些实施方案中,按两个步骤制作橡胶组合物。第一个步骤涉及制备母料,该母料通常包含橡胶组分、填充剂、加工油及抗氧化剂和抗臭氧剂。本领域技术人员会认识到,有各种技术可用于制作母料。例如,在某些实施方案中,将用于制作母料的各组分混合直到基本上均匀。
当需要制作最终橡胶组合物时,在第二个步骤中将母料与硫化剂和加速剂混合。本领域技术人员会认识到,在这个阶段中还可加入另外的化合物,但通常将硫化剂和加速剂留给最终混合物。
以下实施例出于举例说明本发明的目的而给出,并不意在限制本发明的范围。
一种这样的中等品质的传送带覆盖物(cover)的一个例子包括用100phr浓度的芳族油和50phr浓度的芳族油延伸的苯乙烯-丁二烯橡胶(SBR),并且当包括填充剂和加工助剂时总重量份为约237。
对橡胶样品进行测试,将用芳族油制备的橡胶组合物与用大豆油制备的橡胶组合物比较,以评估物理性质。除了取消芳族油并用大豆油取而代之以外,实验样品含有与对照橡胶组合物相同浓度的相同组分。大豆油以约20、30或50份每百重量份橡胶组合物的浓度使用。
具有浓度约30份每百重量份橡胶组合物的大豆油的橡胶配方,表现出与使用芳族油制作的橡胶的拉伸强度相似的拉伸强度,如图1中所示。各橡胶配方的拉伸强度随大豆油浓度增加而降低。基于这个数据,具有约2,000psi至约2,500psi的拉伸强度的对环境友好的橡胶组合物表现出有利的性质。
具有浓度约20份每百重量份橡胶组合物的大豆油的橡胶配方,表现出与使用芳族油制作的橡胶的伸长率最接近的伸长率,如图2中所示。各橡胶配方的伸长率随大豆油浓度增加而增加。基于这个数据,具有约500%至约600%的伸长率的对环境友好的橡胶组合物表现出有利的性质。
使用芳族油制作的橡胶的300%模量,介于具有浓度约20份每百重量份橡胶组合物和30份每百重量份橡胶组合物的大豆油的橡胶配方的300%模量之间,如图3中所示。 各橡胶配方的300%模量随大豆油浓度增加而降低。基于这个数据,具有约800psi至约1,200psi的300%模量的对环境友好的橡胶组合物表现出有利的性质。
使用芳族油制作的橡胶的门尼粘度,介于具有浓度约30份每百重量份橡胶组合物和50份每百重量份橡胶组合物的大豆油的橡胶配方的门尼粘度之间,如图4中所示。各橡胶配方的门尼粘度随大豆油浓度增加而降低。基于这个数据,具有约30至约50的门尼粘度的对环境友好的橡胶组合物表现出有利的性质。
具有浓度约30份每百重量份橡胶组合物的大豆油的橡胶配方,表现出与使用芳族油制作的橡胶的撕裂强度相似的撕裂强度,如图5中所示。 各橡胶配方的撕裂强度随大豆油浓度增加而降低。基于这个数据,具有约200磅/英寸至约250磅/英寸的撕裂强度的对环境友好的橡胶组合物表现出有利的性质。
使用芳族油制作的橡胶配方的Din磨耗指数,大于所有使用大豆油制作的橡胶配方的Din磨耗指数,如图6中所示。各橡胶配方的Din磨耗指数随大豆油浓度增加而增加。基于这个数据,具有小于约250mm3的Din磨耗指数的对环境友好的橡胶组合物表现出有利的性质。
当将使用大豆油加工助剂制作的三种橡胶配方的特性一起进行评估时,使用浓度约30份每百重量份橡胶组合物的大豆油制作的橡胶配方的总体性能表现出最佳的性能特性,以最接近地与芳族油对照样品相称。
最出乎意料的结果是,当使用大豆油时,橡胶配方的抗磨耗性改进。发现仅将油的类型从芳族油改为大豆油,抗磨耗性就显著提高。
抗磨耗性是橡胶化合物的最重要的性质之一。Din磨耗试验机是用于测试传送带带材的磨耗的标准测试。磨耗是被视为材料损失的损耗;因此,Din磨耗指数以立方毫米材料损失表示。Din磨耗指数的数值越低意味着抗磨耗性越高。
尽管仅使用大豆油进行评估,但预期其他源自谷物(grain)的油将表现出与含有大豆油加工助剂的橡胶配方所表现出的结果相似的结果,因为这些其他源自谷物的油具有与大豆油的化学性质相似的化学性质。
设想到,本申请中公开的特征以及上述以引用方式并入的申请中描述的特征可进行混合和匹配,以适合特定的情况。各种其他修改和变化将是本领域普通技术人员显而易见的。
Claims (21)
1.用于传送带的带材,其中所述带材包括:
织物基材;和
对环境友好的橡胶组合物,所述对环境友好的橡胶组合物被施加到所述织物基材的至少一个表面,其中所述对环境友好的橡胶组合物包含:
橡胶组分;
填充剂,所述填充剂以约50至150份每百重量份橡胶组合物的浓度提供;
加工油,所述加工油基本上不含芳族油,其中所述加工油以约20至60份每百重量份橡胶组合物的浓度提供;和
硫化剂,所述硫化剂以约1至10份每百重量份橡胶组合物的浓度提供。
2.根据权利要求1所述的带材,其中所述织物基材含有纺成纤维和长丝纤维中的至少一种。
3.根据权利要求1所述的带材,其中所述加工油包括蓖麻油、椰子油、棉籽油、亚麻籽油、菜籽油、大豆油、棕榈油和花生油中的至少一种。
4.根据权利要求1所述的带材,其中所述橡胶组分包括天然橡胶、合成橡胶或者它们的组合,其中所述填充剂包括炭黑、二氧化硅、碳酸钙、硫酸钙、粘土、云母或者它们的组合,并且其中所述硫化剂包括硫、有机过氧化物或者它们的组合。
5.根据权利要求1所述的带材,所述带材还包含N-苯基-N'-环己基-对苯二胺、N-(1,3-二甲丁基)-N'-苯基-对苯二胺和2,2,4-三甲基-1,2-二氢喹啉中的至少一种物质,所述至少一种物质以最多约10份每百重量份橡胶组合物的浓度在所述对环境友好的橡胶组合物中提供。
6.根据权利要求1所述的带材,所述带材还包含氧化锌、硬脂酸、二苯胍、N-叔丁基-2-苯并噻唑次磺酰胺、二硫化四甲基秋兰姆和次磺酰胺(N-氧二乙撑-2-苯并噻唑次磺酰胺)中的至少一种物质,所述至少一种物质以约1至10份每百重量份橡胶组合物的浓度在所述对环境友好的橡胶组合物中提供。
7.根据权利要求1所述的带材,所述带材还包含石蜡族、环烷族或芳族操作油、乙烯-α-烯烃共低聚物、矿物油如固体石腊和液体石蜡中的至少一种物质,所述至少一种物质以不超过5份每百重量份橡胶组合物的浓度在所述对环境友好的橡胶组合物中提供。
8.根据权利要求1所述的带材,其中所述对环境友好的橡胶组合物表现出约2,000psi至约2,500psi的拉伸强度、约500%至约600%的伸长率、约800psi至约1,200psi的300%模量、约30至约50的门尼粘度、约200磅/英寸至约250磅/英寸的撕裂强度和小于约250mm3的Din磨耗指数。
9.一种对环境友好的橡胶组合物,包含:
橡胶组分;
填充剂,所述填充剂以约50至150份每百重量份橡胶组合物的浓度提供;
加工油,所述加工油基本上不含芳族油,其中所述加工油以约20至60份每百重量份橡胶组合物的浓度提供;和
硫化剂,所述硫化剂以约1至10份每百重量份橡胶组合物的浓度提供。
10.根据权利要求9所述的对环境友好的橡胶组合物,其中所述加工油包括蓖麻油、椰子油、棉籽油、亚麻籽油、菜籽油、大豆油、棕榈油和花生油中的至少一种。
11.根据权利要求9所述的对环境友好的橡胶组合物,其中所述橡胶组分包括天然橡胶、合成橡胶或者它们的组合,其中所述填充剂包括炭黑、二氧化硅、碳酸钙、硫酸钙、粘土、云母或者它们的组合,并且其中所述硫化剂包括硫、有机过氧化物或者它们的组合。
12.根据权利要求9所述的对环境友好的橡胶组合物,所述对环境友好的橡胶组合物还包含N-苯基-N'-环己基-对苯二胺、N-(9,3-二甲丁基)-N'-苯基-对苯二胺和2,2,4-三甲基-1,2-二氢喹啉中的至少一种物质,所述至少一种物质以最多约10份每百重量份橡胶组合物的浓度在所述对环境友好的橡胶组合物中提供。
13.根据权利要求9所述的对环境友好的橡胶组合物,所述对环境友好的橡胶组合物还包含氧化锌、硬脂酸、二苯胍、N-叔丁基-2-苯并噻唑次磺酰胺、二硫化四甲基秋兰姆和次磺酰胺(N-氧二乙撑-2-苯并噻唑次磺酰胺)中的至少一种物质,所述至少一种物质以约1至10份每百重量份橡胶组合物的浓度在所述对环境友好的橡胶组合物中提供。
14.根据权利要求9所述的对环境友好的橡胶组合物,所述对环境友好的橡胶组合物还包含石蜡族、环烷族或芳族操作油、乙烯-α-烯烃共低聚物、矿物油如固体石腊和液体石蜡中的至少一种物质,所述至少一种物质以不超过5份每百重量份橡胶组合物的浓度在所述对环境友好的橡胶组合物中提供。
15.根据权利要求9所述的对环境友好的橡胶组合物,其中所述对环境友好的橡胶组合物表现出约2,000psi 至约2,500psi的拉伸强度、约500%至约600%的伸长率、约800psi至约1,200psi的300%模量、约30至约50的门尼粘度、约200磅/英寸至约250磅/英寸的撕裂强度和小于约250mm3的Din磨耗指数。
16.一种制备用于传送带的带材的方法,其中所述方法包括:
制备包含橡胶组分、填充剂、加工油和硫化剂的对环境友好的橡胶组合物,其中所述填充剂以约50至150份每百重量份橡胶组合物的浓度提供,其中所述加工油基本上不含芳族油,其中所述加工油以约20至60份每百重量份橡胶组合物的浓度提供,并且其中所述硫化剂以约1至10份每百重量份橡胶组合物的浓度提供;
将所述橡胶组合物与织物基材结合以形成经涂覆的带;并且
对所述经涂覆的带进行硫化以形成所述传送带。
17.根据权利要求16所述的方法,其中使用擦过涂敷和摩擦涂覆中的至少一种将所述对环境友好的橡胶组合物与所述织物基材结合。
18.根据权利要求16所述的方法,其中所述加工油包括蓖麻油、椰子油、棉籽油、亚麻籽油、菜籽油、大豆油、棕榈油和花生油中的至少一种。
19.根据权利要求16所述的方法,其中所述橡胶组分包括天然橡胶、合成橡胶或者它们的组合,其中所述填充剂包括炭黑、二氧化硅、碳酸钙、硫酸钙、粘土、云母或者它们的组合,并且其中所述硫化剂包括硫、有机过氧化物或者它们的组合。
20.根据权利要求16所述的方法,所述橡胶组合物还包含石蜡族、环烷族或芳族操作油、乙烯-α-烯烃共低聚物、矿物油如固体石腊和液体石蜡中的至少一种物质,所述至少一种物质以不超过5份每百重量份橡胶组合物的浓度在所述对环境友好的橡胶组合物中提供。
21.根据权利要求16所述的方法,其中所述对环境友好的橡胶组合物表现出约2,000psi 至约2,500psi的拉伸强度、约500%至约600%的伸长率、约800psi至约1,200psi的300%模量、约30至约50的门尼粘度、约200磅/英寸至约250磅/英寸的撕裂强度和小于约250mm3的Din磨耗指数。
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