CN104718089A - 轮胎帘布 - Google Patents

轮胎帘布 Download PDF

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CN104718089A
CN104718089A CN201380053335.3A CN201380053335A CN104718089A CN 104718089 A CN104718089 A CN 104718089A CN 201380053335 A CN201380053335 A CN 201380053335A CN 104718089 A CN104718089 A CN 104718089A
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paired
tyre
canvas
rubber
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CN104718089B (zh
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库尔萨特·阿克索伊
萨德丁·菲丹
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Husky Global Yarn Industry Of Coude And Trade Joint-Stock Co
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    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
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    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C1/00—Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
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    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
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    • B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
    • B60C9/18—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
    • B60C9/20—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel
    • B60C9/22—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel the plies being arranged with all cords disposed along the circumference of the tyre
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
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    • B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
    • B60C9/18—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
    • B60C9/20—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel
    • B60C9/22—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel the plies being arranged with all cords disposed along the circumference of the tyre
    • B60C9/2204—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel the plies being arranged with all cords disposed along the circumference of the tyre obtained by circumferentially narrow strip winding
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    • B60C2001/0083—Compositions of the cap ply layers
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    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
    • B60C2009/0035—Reinforcements made of organic materials, e.g. rayon, cotton or silk
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
    • B60C2009/0071—Reinforcements or ply arrangement of pneumatic tyres characterised by special physical properties of the reinforcements
    • B60C2009/0092—Twist structure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
    • B60C9/18—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
    • B60C9/1807—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers comprising fabric reinforcements
    • B60C2009/1814—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers comprising fabric reinforcements square woven
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
    • B60C9/18—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
    • B60C9/20—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel
    • B60C9/22—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel the plies being arranged with all cords disposed along the circumference of the tyre
    • B60C2009/2252—Physical properties or dimension of the zero degree ply cords
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    • D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
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    • D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
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    • D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
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  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Woven Fabrics (AREA)

Abstract

在此披露了一种轮胎帘布(1)，其中成对帘线(2)被用作经线。所述轮胎帘布(1)在充气轮胎中用作胎体和冠带层加强部。目的是提供一种轮胎帘布(1)，该轮胎帘布使得在给定的帘线-橡胶复合物体积下能够使用较少的橡胶和较多的帘线。

Description

轮胎帘布
发明领域
本发明涉及一种轮胎帘布，其中成对帘线被用作经线，并且所述帘布在充气轮胎中用作胎体和冠带层加强部。
发明背景
在充气轮胎中，用作胎体和冠带层的帘线加强部具有捻合结构和圆形截面(图1)。用字母S和Z表示纱线和帘线的捻合方向。当捻合的纱线或帘线处于竖直位置时，如果围绕中心轴线的螺旋弯曲部是平行于字母S的中间部分，则将其定义为S捻(S状捻合)；如果该螺旋弯曲部是平行于字母Z的中间部分，则将其定义为Z捻(Z状捻合)。
在涂有橡胶的(压延的)轮胎帘布中，在这些帘线的顶侧和底侧上有额外的橡胶层以提供所需的轮胎性能。在另一方面，在动态条件下橡胶基质由于其粘弹行为而造成热积聚和滚动阻力。
对于给定的股线强度和每单位长度的最佳帘线数量(epdm)，根据具有所需断裂强度的帘线直径来计算股线厚度。为了降低橡胶和轮胎重量，应该降低股线厚度。为了实现这一目的，可以通过增加epdm(帘线根数)而不改变单位股线强度来减小帘线直径。但是epdm的增加也意味着帘线之间间距的减小，这可能导致轮胎具有差的抗弯曲和抗压缩疲劳性。出于这个原因，在不牺牲轮胎耐用性的情况下增大epdm的可能性是非常有限的。
根据固特异(Goodyear)公司的美国专利文献号US 6,959,534，为了降低捻合成本，轮胎行业已将股线捻度比缆线捻度更低的轮胎帘线用作加强部。根据所述专利，难以加工经浸渍/热定形和压延的帘线，原因在于它们的由失衡的股线捻度和缆线捻度造成的残余扭矩。残余扭矩使经浸渍且涂有橡胶的帘布中的末梢翘起并卷曲。出于此原因，在所述固特异公司的专利申请中，具有S捻向和Z捻向的这些帘线被交替地布置在帘布中，而不是由完全S捻向帘线制成的常规轮胎帘布。
在所述应用中，描述了当具有失衡的S和Z捻度的帘线交替地用在帘布中时，在经浸渍且压延的帘布中形成的S和Z方向上的扭矩会相互抵消并且消除这些工艺问题。然而，所述专利没有提到相互Z向和S捻向帘线在减小它们之间的剪切应变的方面具有潜在的优越性。除了没有提及的技术优点，在所述专利中披露的失衡捻合帘线与对应的平衡捻合帘线相比具有较低的断裂强度和模量。
在一些钢制帘线带中也可以看到交替的Z和S捻向帘线的应用。所述应用中的目的是消除经压延的钢制帘线层的处理问题(卷曲)。
发明概述
本发明的目的在于提供一种具有相反捻向的成对帘线(即成对的S和Z捻向帘线)的轮胎帘布。
本发明的另一个目的是在于提供一种轮胎帘布，其中在动态条件下所述成对帘线之内和之间的剪切应变减小。
本发明的另一个目的在于提供一种轮胎帘布，所述轮胎帘布使得在给定的帘线-橡胶复合物体积下能够使用较少的橡胶和较多的帘线(较薄的帘线)。
本发明的又一目的在于提供一种使充气轮胎能够轻于常规轮胎的轮胎帘布。
发明的详细说明
在以下附图中展示了为实现本发明的目的而研发的“轮胎帘布”，在附图中：
图1是现有技术的侧视图和俯视剖视图。
图2(a)是具有相似捻向的成对帘线的轮胎帘布的侧视图和俯视剖视图。
(b)是具有相似捻向的单一成对帘线的侧视图和俯视剖视图。
图3(a)是具有相反捻向的成对帘线的轮胎帘布的侧视图和俯视剖视图。
(b)是具有相反捻向的单一成对帘线的侧视图和俯视剖视图。
图4(a)是在压缩作用下相似捻向帘线的角运动视图。
(b)是在压缩作用下相反捻向帘线的角运动视图。
图5(a)是在压缩作用下相似捻向帘线表面应变方向的视图。
(b)是在压缩作用下相反捻向帘线的表面应变方向的视图。
图6(a)是在拉伸作用下相似捻向帘线的角运动视图。
(b)是在压缩作用下相反捻向帘线的角运动视图。
图7(a)是在拉伸作用下相似捻向帘线的表面应变方向的视图。
(b)是在压缩作用下相反捻向帘线的表面应变方向的视图。
图8(a)是具有Z纱线捻向/S帘线捻向的帘线结构的视图。
(b)是具有S纱线捻向/Z帘线捻向的帘线结构的视图。
对附图中的部件进行编号并且编号如下：
1.轮胎帘布
2.成对帘线
3.S捻向帘线
4.Z捻向帘线
5.相似捻向帘线对
6.相反捻向帘线对
7.RFL粘合剂
8.S捻向纱线
9.Z捻向纱线
A.纬向纱线
O.现有技术
P.拉伸力或压缩力
R.帘线的角运动方向
D.帘线的表面运动方向
根据本发明的轮胎帘布(1)使得在给定帘线-橡胶复合物体积下能够使用较少的橡胶和较多的帘线，并且通过将彼此相连的成对帘线(2)用作经线而可以在车辆轮胎中将该轮胎帘布用作加强部。
根据本发明的轮胎帘布(1)由成对帘线(2)制成，以便在充气轮胎中用作加强部。在优选使用的成对帘线(2)中，使用相反的帘线捻向(6)，例如S-Z或Z-S(图3a和图3b)。此外，这些成对帘线(2)可以具有相似的帘线捻向(5)，例如S-S或Z-Z(图2a和图2b)。
在本发明的优选实施例中，成对帘线(2)结构是由具有相反帘线捻向(即S-Z或Z-S)的两根帘线(6)制成。在相反帘线捻向(SZ或ZS)的帘线(6)的交互面之间的剪切应变比常规SS或ZZ帘线(5)(图4、图5、图6和图7)的更小。
在本发明的优选实施例中，对成对帘线(2)中帘线(3，4)之间的间距进行填充的粘合剂(7)是通过将成对帘布(2)浸入RFL溶液中而形成的RFL膜层。在具有成对帘线(2)的帘布(1)中，各成对帘线(两根帘线)(2)通过合适的RFL膜彼此连接。在所述成对帘布(2)结构中，在成对帘线(2)条带之间存在用于橡胶贯穿的期望间距，以提供足够的橡胶粘合性和轮胎耐久性。
在拉伸、压缩和弯曲的情况下，在SZ或ZS式相反捻向帘线(6)类型的成对帘线(3、4)的面之间的角剪切应变比常规应用的更小。因此，成对帘线(2)之间的适当的帘线间距可以窄于所有帘线都具有相似捻合方向(例如S-S捻向帘线对(5))的当前帘线加强部(O)的间距。此外，在相互接触的情况下，SZ或ZS相反捻向帘线对(6)在相互成对帘线(2)之间具有面接触(平行接触)，而SS帘线对(3)或ZZ帘线对(5)具有点接触(交叉接触)。
在本发明的一个实施例中，这些成对帘线(2)具有相同的平衡捻度，但是它们被安排在相反的方向上。
在本发明的一个实施例中，成对帘线条带(2)(S-S、Z-Z(5)或S-Z(6)帘线捻向的组合)包含失衡的捻合帘线，从而给彼此施加残余扭矩。成对帘线(2)内朝向彼此的捻向增加了成对帘线(2)中的分离阻力和稳定性。
如果在帘线中存在失衡捻度，即纱线(股线)捻度和帘线捻度彼此不同，则帘线将试图旋转。这种现象的原因是捻度之间的差异引起的残余扭矩。当捻度之间的差异变大时，残余扭矩也变大。如果不存在捻度差异，则没有残余扭矩。
在本发明的一个实施例中，成对帘线(2)中的一根帘线具有将残余扭矩施向另一根帘线的失衡捻度，而这另一根帘线(不再具有残余扭矩的这根帘线)具有平衡捻度。
在本发明的优选实施例中，成对帘线(2)条带中使用的帘线是由聚合物材料制成的，所述聚合物材料选自下组，该组包括：芳族聚酰胺、人造纤维、PET、PEN、PA 6.6、PA 4.6或芳族聚酰胺/尼龙混合物。
在所述成对帘线(2)中使用的帘线(3，4)的线密度是在200与10000dtex之间。优选地，所述值特别地可以是在1000与5000dtex之间、更特别地是在1500与4000dtex之间。
根据本发明的轮胎帘布(1)可以用作乘用车轮胎和轻型卡车轮胎的胎体加强部。
根据本发明的轮胎帘布(1)可以用作乘用车轮胎的冠带层，其中环形缠绕条带与周向平面成0度或5度。
在本发明的优选实施例中，用作冠带层的轮胎帘布(1)的宽度可以在5与25mm之间变化。通过以预定宽度切割包含成对帘线的帘布来制作所述条带。
在本发明的优选实施例中，10cm成对帘线(2)的数量在25到110(50到220根帘线/10cm)之间变化。
在这些基本概念的框架内，能够开发出根据本发明的轮胎帘布(1)的各种各样的实施例。本发明不限于本文所述实例、并且本质上是由权利要求书限定的。

Claims (13)

1.一种轮胎帘布(1)，该轮胎帘布使得在给定帘线-橡胶复合物体积下能够使用较少的橡胶和较多的帘线并且当用作车辆充气轮胎中的加强部时消除了过度橡胶含量的缺点，其特征为用作经线的成对帘线(2)，在这些成对帘线中这些单一帘线通过RFL粘合剂而彼此连接成对。
2.根据权利要求1所述的轮胎帘布(1)，其特征为以下成对帘线(2)：所述成对帘线具有相似的帘线捻向(5)，如S-S或Z-Z。
3.根据权利要求1所述的轮胎帘布(1)，其特征为以下成对帘线(2)：所述成对帘线与常规SS帘线或ZZ相似捻向帘线对(5)相比在动态条件下在交互面之间具有更小的剪切应变、并且具有相反的帘线捻向(6)，如S-Z或Z-S。
4.根据以上权利要求中任一项所述的轮胎帘布(1)，其特征为以下成对帘线(2)：所述成对帘线被定位成使它们之间具有一个间距以允许期望的橡胶贯穿，以便提供足够的橡胶粘合性和轮胎耐久性。
5.根据权利要求4所述的轮胎帘布(1)，其特征为RFL粘合剂(7)，所述RFL粘合剂通过对该成对帘线(2)帘布之间允许期望的橡胶贯穿以提供橡胶粘合性和轮胎耐久性的该间距进行填充使得成对帘线(2)条带之间的距离能够具有连续性、并且是由于用RFL浸渍该成对帘线(2)而形成的一个RFL膜层。
6.根据以上权利要求中任一项所述的轮胎帘布(1)，其特征为SZ或ZS型反向捻合的成对帘线(6)，在拉伸、压缩和弯曲的情况下相比于常规应用，在所述成对帘线之内和之间具有更低的角剪切特性。
7.根据以上权利要求中任一项所述的轮胎帘布(1)，其特征为以下成对帘线(2)：所述成对帘线包括在与该捻合方向相反的方向上具有纱线捻度(8，9)的至少一根帘线(3，4)。
8.根据以上权利要求中任一项所述的轮胎帘布(1)，其特征为以下成对帘线(2)：所述成对帘线包括两根帘线，其中一根帘线具有将残余扭矩施向另一根帘线的失衡捻度，而其中的不具有残留扭矩的另一根帘线具有平衡捻度。
9.根据以上权利要求中任一项所述的轮胎帘布(1)，其特征为以下成对帘线(2)：所述成对帘线具有由选自下组的至少一种聚合物材料制成的帘线(3，4)，该组包括：芳族聚酰胺、人造纤维、PET、PEN、PA 6.6、PA 4.6或芳族聚酰胺/尼龙混合物。
10.根据以上权利要求中任一项所述的轮胎帘布(1)，其特征为以下成对帘线(2)：所述成对帘线中使用了线密度处于200与10000dtex之间的帘线(3，4)。
11.根据以上权利要求中任一项所述的轮胎帘布(1)，其特征在于，该轮胎帘布被用作乘用车和轻型卡车的轮胎中的胎体加强部。
12.根据以上权利要求中任一项所述的轮胎帘布(1)，其特征在于，该轮胎帘布被用作乘用车轮胎的带束层顶部上的冠带层，其中缠绕条带的宽度为5mm至25mm并且与该轮胎的周向平面成0度至5度角。
13.根据以上权利要求中任一项所述的轮胎帘布(1)，其特征为以下成对帘线(2)：10cm中所述成对帘线的数量(epdm)在25与110(50到220根单一帘线/10cm)之间变化。
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