CN101389496A - 橡胶被覆rfid模块和埋设有它的充气轮胎 - Google Patents
橡胶被覆rfid模块和埋设有它的充气轮胎 Download PDFInfo
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Abstract
本发明提供了一种橡胶被覆RFID模块,其被覆了含有100重量份的二烯系橡胶、小于30重量份的炭黑、和5~55重量份的二氧化硅,相对介电常数为7以下,且动态弹性模量(E’)为2~12MPa,厚度为0.2~2mm的橡胶片,其可延长与需要的设置位置的通信距离,埋设藏在轮胎内时耐久性优异。
Description
技术领域
本发明涉及橡胶被覆RFID(Radio Frequency-Identification)模块,更详细地说,涉及可延长与所需的设置位置的通信距离,在轮胎内埋设时轮胎的耐久性优异的橡胶被覆RFID模块。
背景技术
近年来,为了防止车辆被盗、和便于轮胎的制造管理、出货管理、或交付给使用者后的使用履历管理等,广泛开发将内藏有存储器的转发器(transponder,RFID标签)装在车辆、轮胎中的技术。大量现有技术是在车辆的内部、外部、轮胎的内面上设置转发器,但在这种情况中,受到其设置部位或周围的部件造成的电波吸收、干涉等的影响,存在转发器与通信机的交换信号距离缩短,或由于噪音而不能交换信号等问题。另外,特别是在设置在轮胎内部等时,由于行驶中轮胎变形大,所以存在转发器容易破损等问题。
以往,作为使用该转发器的技术,在特开2005-170065号公报中公开了,将该转发器设置在轮胎内部,记录并输出各种轮胎和车辆情报,在轮胎和车体的管理等中使用,或还通过它依次将轮胎和车体情报与驱动控制装置连接起来,控制行驶等的现有技术,另外,在特开2005-170222号公报中公开了,以轮胎沟间的介电常数的变化来捕捉湿润、干燥等的路面状况,测定设置在轮胎胎面的转发器的静电容量,从而判断路面状况,控制车辆行驶的技术。
进而,在特开2000-108621号公报中,作为防止该转发器破损,防止电波干涉导致通信不良的技术,公开了在轮胎的胎圈部埋设棒状的转发器的技术,另外,在特开2005-96726号公报中公开了将该转发器设置在轮胎气门结构体周围的板状磁性体上的技术,另外,在特开2002-271127号公报中公开了为了使该转发器本身不受噪音的影响,在转发器和安置它的物品之间设置了电阻率为1×106Ω·cm以上的电磁屏蔽板的技术。
发明内容
本发明的目的在于提供一种橡胶被覆RFID模块,特别是在将该RFID模块埋设在轮胎等中使用时,可防止由其周围的材料(金属、橡胶等)引起的电波的吸收、电波干涉的影响而使通信距离缩短,另外不损害轮胎的耐久性。
根据本发明提供了一种RFID模块,其被覆了含有100重量份的二烯系橡胶、小于30重量份的碳黑、和5~55重量份的二氧化硅,相对介电常数为7以下,且动态弹性模量(E’)为2~12MPa,厚度为0.2~2mm的橡胶片,本发明了还提供了一种充气轮胎,其在从胎肩部到轮辋突缘接触部位置的轮胎内部埋设有上述RFID模块。
具体实施方式
在本发明中,在将RFID模块设置在车辆、轮胎中时,该RFID受设置位置处的金属、橡胶物性(介电常数、导磁率、电阻率等)的影响,存在通信距离缩短、产生噪音等问题,另外,随着长期使用,存在因振动、冲击等导致的RFID本身性能劣化、它的埋设导致的轮胎本身耐久性劣化等问题,因而,对解决这些问题的方法进行了各种摸索,结果发现,模块用下述的规定厚度的橡胶片被覆该RFID模块是有效的,所述橡胶片配合有规定量的碳黑和二氧化硅,具有规定的相对介电常数和动态弹性模量。
本发明的橡胶被覆RFID模块,作为其应用,特别是可以想到,将其埋设在轮胎的胎圈部与胎侧部的中间来使用。一般来说,轮胎的胎圈部的动态弹性模量是4~5MPa,胎侧部的动态弹性模量是5~7MPa左右。因此,为了不使轮胎发生因该RFID模块的埋设而导致的,挠曲大的胎侧部在运行中出现破坏,被覆橡胶组合物的动态弹性模量为2~12MPa左右是必要的,理想的是应在4~7MPa左右。另一方面,为了使埋设在该轮胎部位的该RFID模块不产生噪音、不出现通信距离的缩短等电波阻碍,一般使被覆橡胶组合物的相对介电常数接近真空中的相对介电常数1较好,优选该被覆橡胶组合物的介电常数小。
对本发明的橡胶被覆RFID模块的转发器(RFID标签)没有特殊限定,可以使用例如日立制μ芯片、インタ—メックテクノロジ—ズ社制UHF频带RFID标签等。
本发明的橡胶被覆RFID模块中被覆橡胶的基础胶料,使用通常在轮胎中使用的二烯系橡胶,例如天然橡胶(NR)、聚异戊二烯橡胶(IR)、聚丁二烯橡胶(BR)、丁苯橡胶(SBR)、丁腈橡胶(NBR)、氯丁橡胶、三元乙丙橡胶(EPDM)、苯乙烯-异戊二烯共聚物橡胶、苯乙烯-异戊二烯-丁二烯共聚物橡胶、异戊二烯-丁二烯共聚物橡胶、丁基橡胶等二烯系橡胶。作为该基础胶料,可以单独使用上述各橡胶,或者将2种以上混合使用。
作为在本发明的橡胶被覆RFID模块的被覆橡胶中配合的碳黑,可以使用例如ISAF、HAF、FEF、GPF、SRF等碳黑。另外,作为在本发明的橡胶被覆RFID模块的被覆橡胶中配合的二氧化硅,可以使用通过公知的方法得到的干式二氧化硅、湿式二氧化硅、溶胶-凝胶法二氧化硅和胶态二氧化硅等任选的二氧化硅。
在本发明的橡胶被覆RFID模块的被覆橡胶中,可以使用相对于100重量份的上述二烯系橡胶,配合了小于30重量份、优选为0~10重量份、更优选为0~5重量份的碳黑,和5~55重量份、优选为15~45重量份的二氧化硅的被覆橡胶组合物。通过配合特定量的碳黑和二氧化硅,可以使该RFID模块的被覆橡胶的相对介电常数为7以下,优选为3~7,且20℃下的动态弹性模量(E’)为2~12MPa,更优选为4~7MPa。另外,作为该RFID模块的被覆橡胶的厚度,优选为0.2~2mm。如果该厚度薄,则不能发挥期待的作用效果,相反如果过厚,则不仅不能发挥进一步改善效果的作用,而且可能在轮胎的耐久性方面出现问题。
用该配合了特定配合量的碳黑和二氧化硅的被覆橡胶组合物被覆RFID模块而得到的本发明的橡胶被覆RFID模块,由于其相对介电常数低,所以可以大幅改善通信时的电波阻碍,可以大大延长其通信距离,另外,在将其埋设在充气轮胎的规定部位来使用的情况中,由于其最合适的动态弹性模量,该轮胎的耐久性也得到了大幅改善。
在将用本发明的上述特定被覆橡胶组合物被覆转发器而成的RFID模块,埋设在充气轮胎的从胎肩部到轮辋突缘接触部位置的轮胎内部时,该部位是在运行时挠曲最小,并且通信状况良好的位置,所以可有效使用该橡胶被覆RFID模块。
在本发明的RFID被覆用橡胶组合物中,还可以配合通常的硫化剂或交联剂、硫化促进剂或交联促进剂、防老化剂、填料、增塑剂、以及其它的一般用途和轮胎橡胶用途中配合的各种配合剂,可以将这些配合剂用一般的方法混炼成橡胶组合物,然后进行硫化或交联。这些配合剂的配合量,只要不违背本发明的目的,就可以使用以往的一般配合量。
实施例
下面,通过以往例、实施例和比较例来进一步说明本发明,但毋庸置疑地是,本发明的技术范围并不受这些实施例的限定。
试样的制作
按照表1所示的配合(重量份),将除了硫和硫化促进剂以外的橡胶、碳黑、二氧化硅等各种配合成分加入到1.7升的密闭式班伯里混合机中混合5分钟,将该橡胶放到混合机外冷至室温,将冷却后的母炼胶再次加入到相同的班伯里混合机中,向其中配合硫和硫化促进剂,进行混合,从而得到橡胶组合物。将该橡胶组合物在15cm×15cm×0.2cm的模具中,在160℃下加压硫化40分钟,制作需要的试样(橡胶片),将其用于下面的相对介电常数(950MHz的介电常数)和动态弹性模量试验中。
试验方法
(1)相对介电常数(950MHz的介电常数):将橡胶片冲裁成内径3mm、外径7mm的圆环形,使用网络分析仪(NETWORK ANALYZERS,アンリツ制,矢量网络分析仪37369C),通过波导管法测定相对介电常数。
(2)动态弹性模量(E’):使用东洋精机制作所(株)制的粘弹性光谱仪,在20℃、初期变形:10%,振幅:±2%,频率:20Hz的条件下测定动态弹性模量。
轮胎试样的制作
将由本发明的橡胶组合物制作的厚度1mm、2mm和3mm的各2枚橡胶片以夹持的方式被覆在RFID上,将其配置在11R225尺寸的重荷重用途轮胎的胎圈填料前端,用通常的方法成型轮胎,硫化,制作轮胎试样。
试验方法
(3)通信距离:从距离固定的轮胎试样充分远的位置,慢慢使RFID扫描仪AWID MRR 1510靠近,扫描仪记录了最开始读取RFID信号的距离。对每个轮胎测定5次,将它们的平均值作为通信距离。
(4)耐久性试验/破坏的有无:在轮胎试样中封入空气使压力为850kPa,在荷重53.46kN,速度30km/小时、无转向角的条件下进行室内转鼓试验,目视观察经运行在RFID模块附近有无破坏。
以往例、实施例1~5、比较例1~3
下表I中示出了试验结果。
从表I的结果可知,与以往例和各比较例相比,本发明的实施例1~5的橡胶被覆RFID模块可以在保持轮胎耐久性的情况下,确保非常优异的通信距离。
产业可利用性
如上所述,本发明的橡胶被覆RFID模块,如果设置在充气轮胎的规定部位使用是非常有用的。
Claims (4)
1.一种RFID模块,是由厚度为0.2~2mm的橡胶片被覆转发器而成的,所述橡胶片含有100重量份的二烯系橡胶、小于30重量份的碳黑、和5~55重量份的二氧化硅,相对介电常数为7以下,且动态弹性模量(E’)为2~12MPa。
2.根据权利要求1所述的RFID模块,所述二烯系橡胶是选自天然橡胶、聚异戊二烯橡胶、聚丁二烯橡胶、丁基橡胶、三元乙丙橡胶、丁苯橡胶中的至少一种。
3.根据权利要求1或2所述的RFID模块,所述橡胶片是由在100重量份的二烯系橡胶中配合了0~10重量份的碳黑、和15~45重量份的二氧化硅的橡胶组合物构成的。
4.一种充气轮胎,在从胎肩部到轮辋突缘接触部位置的轮胎内部埋设有权利要求1~3的任一项所述的RFID模块。
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JP2006050725 | 2006-02-27 | ||
JP050725/2006 | 2006-02-27 | ||
PCT/JP2007/054107 WO2007100111A1 (ja) | 2006-02-27 | 2007-02-26 | ゴム被覆rfidモジュール及びそれを埋設した空気入りタイヤ |
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CN101389496A true CN101389496A (zh) | 2009-03-18 |
CN101389496B CN101389496B (zh) | 2012-03-28 |
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US (1) | US8072336B2 (zh) |
EP (1) | EP1995082A4 (zh) |
JP (1) | JP5146309B2 (zh) |
CN (1) | CN101389496B (zh) |
WO (1) | WO2007100111A1 (zh) |
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2007
- 2007-02-26 US US12/279,268 patent/US8072336B2/en active Active
- 2007-02-26 JP JP2008502878A patent/JP5146309B2/ja active Active
- 2007-02-26 CN CN200780006760.1A patent/CN101389496B/zh active Active
- 2007-02-26 WO PCT/JP2007/054107 patent/WO2007100111A1/ja active Application Filing
- 2007-02-26 EP EP07737719A patent/EP1995082A4/en not_active Withdrawn
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CN106419442A (zh) * | 2016-08-30 | 2017-02-22 | 软控股份有限公司 | 基于rfid地垫的平面库位管理系统 |
CN106419442B (zh) * | 2016-08-30 | 2019-01-22 | 软控股份有限公司 | 基于rfid地垫的平面库位管理系统 |
CN111108008A (zh) * | 2017-09-12 | 2020-05-05 | 住友橡胶工业株式会社 | 充气轮胎 |
CN111108008B (zh) * | 2017-09-12 | 2022-02-18 | 住友橡胶工业株式会社 | 充气轮胎 |
CN111989231A (zh) * | 2018-03-20 | 2020-11-24 | 米其林集团总公司 | 设置有射频通信模块的重型货物车辆充气轮胎 |
CN110978905A (zh) * | 2018-10-03 | 2020-04-10 | 通伊欧轮胎株式会社 | 轮胎 |
CN110978905B (zh) * | 2018-10-03 | 2021-12-21 | 通伊欧轮胎株式会社 | 轮胎 |
CN111845213A (zh) * | 2019-04-26 | 2020-10-30 | 通伊欧轮胎株式会社 | 轮胎 |
CN111845213B (zh) * | 2019-04-26 | 2022-07-12 | 通伊欧轮胎株式会社 | 轮胎 |
CN114728555A (zh) * | 2019-11-27 | 2022-07-08 | 横滨橡胶株式会社 | 充气轮胎 |
CN115066342A (zh) * | 2020-02-17 | 2022-09-16 | 横滨橡胶株式会社 | 充气轮胎 |
US20230415519A1 (en) * | 2022-06-24 | 2023-12-28 | Sumitomo Rubber Industries, Ltd. | Heavy duty tire |
Also Published As
Publication number | Publication date |
---|---|
CN101389496B (zh) | 2012-03-28 |
EP1995082A4 (en) | 2010-06-02 |
US8072336B2 (en) | 2011-12-06 |
WO2007100111A1 (ja) | 2007-09-07 |
US20090015415A1 (en) | 2009-01-15 |
JPWO2007100111A1 (ja) | 2009-07-23 |
EP1995082A1 (en) | 2008-11-26 |
JP5146309B2 (ja) | 2013-02-20 |
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