CN108367520B - 轮胎的密封层的处理方法、密封层和轮胎 - Google Patents

轮胎的密封层的处理方法、密封层和轮胎 Download PDF

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CN108367520B
CN108367520B CN201680070861.4A CN201680070861A CN108367520B CN 108367520 B CN108367520 B CN 108367520B CN 201680070861 A CN201680070861 A CN 201680070861A CN 108367520 B CN108367520 B CN 108367520B
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sealing layer
radiation
tire
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layer
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CN108367520A (zh
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G·培祖罗
M·布鲁尼
J·N·豪斯
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D30/00—Producing pneumatic or solid tyres or parts thereof
    • B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
    • B29D30/0681—Parts of pneumatic tyres; accessories, auxiliary operations
    • B29D30/0685—Incorporating auto-repairing or self-sealing arrangements or agents on or into tyres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C73/00—Repairing of articles made from plastics or substances in a plastic state, e.g. of articles shaped or produced by using techniques covered by this subclass or subclass B29D
    • B29C73/16—Auto-repairing or self-sealing arrangements or agents
    • B29C73/22—Auto-repairing or self-sealing arrangements or agents the article containing elements including a sealing composition, e.g. powder being liberated when the article is damaged
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
    • B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
    • B29C2035/0827—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation using UV radiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D30/00—Producing pneumatic or solid tyres or parts thereof
    • B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
    • B29D30/0681—Parts of pneumatic tyres; accessories, auxiliary operations
    • B29D30/0685—Incorporating auto-repairing or self-sealing arrangements or agents on or into tyres
    • B29D2030/0686—Incorporating sealants on or into tyres not otherwise provided for; auxiliary operations therefore, e.g. preparation of the tyre
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D30/00—Producing pneumatic or solid tyres or parts thereof
    • B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
    • B29D30/0681—Parts of pneumatic tyres; accessories, auxiliary operations
    • B29D30/0685—Incorporating auto-repairing or self-sealing arrangements or agents on or into tyres
    • B29D2030/0686—Incorporating sealants on or into tyres not otherwise provided for; auxiliary operations therefore, e.g. preparation of the tyre
    • B29D2030/0697—Incorporating sealants on or into tyres not otherwise provided for; auxiliary operations therefore, e.g. preparation of the tyre the sealant being in liquid form, e.g. applied by spraying
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2011/00—Use of rubber derived from chloroprene as moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2019/00—Use of rubber not provided for in a single one of main groups B29K2007/00 - B29K2011/00, as moulding material

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Treatments Of Macromolecular Shaped Articles (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
  • Tyre Moulding (AREA)
  • Sealing Material Composition (AREA)
  • Tires In General (AREA)

Abstract

一种用于降低施加于轮胎的内腔上的密封层的暴露于空气的表面的粘性的方法。所述方法确立了使密封层的暴露于空气的表面经历UV辐射。

Description

轮胎的密封层的处理方法、密封层和轮胎
技术领域
本发明关注轮胎的密封层的处理方法。
背景技术
通常配置在轮胎内腔的黏性(viscous)的密封层的使用已经已知了一段时间。特别地，密封层通常在胎面胶片(tread strip)的区域中与气密层接触地配置。
密封层的目标是包围且粘着于已穿透胎面的物体，由此通过瞬间“密封”的手段防止空气从轮胎中漏出。进一步，如果穿透的物体从胎面中退出，则密封层的材料将会占据由该物体留下的孔穴，使其密封。
密封层的粘度对于所述密封层的效果(effectiveness)而言是最重要的参数之一。事实上，如上所述，密封层的粘度必须能够同时保证对穿透的物体和对由该物体留下的孔穴的密封作用、以及不管轮胎的静态或动态条件如何其在轮胎的内腔中的稳定性。如本领域技术人员众所周知的，密封层的恰当粘度必然导致所述层的高的表面粘性(stickiness)。虽然密封层的使用时与气密层接触的表面的特定粘性会是有用的，但是对于相反面，即，暴露于空气的表面，它会构成一个严重的问题。事实上，在轮胎的保存期间，异物如灰尘、叶子或甚至昆虫粘着在密封层的暴露于空气的表面上。这必然使轮胎的商业价值下降，导致对制造商和经销商的明显的经济后果。
因此，感到需要一种密封层，其具有为了恰当地实现(perform)其功能而要求的粘度特性，但是与此同时，在暴露于空气的表面上具有低的粘性以避免上述的缺点。
本发明的发明人出人意料地发现了对密封层的暴露于空气的表面施加UV辐射显著地降低其粘性，而不更改密封层整体的特性，因此不危害其效果。
发明内容
本发明的主题是一种将密封层施加于轮胎中的方法，所述方法包括配置步骤，其中将密封层配置在气密层的面向轮胎的内腔的自由表面(free surface)上；所述方法的特征在于：其包括降低粘性的步骤，其中使配置在所述气密层上的所述密封层的暴露于空气的表面经历UV辐射的直接作用。
优选地，所述UV辐射的波长范围为200～400nm。
优选地，所述UV辐射的辐出度(radiant exitance)范围为250W/m2～1500W/m2，更优选为500W/m2～1000W/m2。
优选地，使所述暴露于空气的表面经历时间范围为5～15分钟、更优选为8～10分钟的UV辐射。
本发明的另一主题是一种密封层，其施加于轮胎胎体的内表面上并且其特征在于所述密封层具有暴露于空气的表面，所述表面已经根据本发明的方法主题而经历了UV辐射的作用。
优选地，所述密封层包括20～100phr的卤化丁基橡胶、5～60phr的填料、50～400phr的增塑剂和硫化体系。更优选地，所述密封层包括40～60phr的卤化丁基橡胶、10～30phr的填料、和150～250phr的增塑剂。
本发明的进一步主题是包括密封层的轮胎，所述密封层的暴露于空气的表面已经根据本发明的方法主题而经历了UV辐射的作用。
具体实施方式
以下仅通过说明性、非限制性的实施例的方式给出实施方案的实例。
制备配混物以用于密封层的制造，其配方在表I中以phr计而报道。
表I
卤化丁基橡胶 100.0
炭黑 40.0
增塑剂 240.00
硫磺 0.5
硬脂酸 1.5
氧化锌 1.0
促进剂 4.0
卤化丁基橡胶为溴化丁基橡胶。
使用的炭黑由N550规定。
使用的增塑剂为环烷油。
使用的促进剂为二硫化二苯并噻唑(MBTS)。
将表1中指明的各成分混合在一起并且在100℃的温度下保持搅拌10分钟。
将由此制备的配混物硫化并且施加于气密层的表面上。特别地，将密封层置于挤出机中且加热，从该挤出机中将其直接挤出在气密层之上。
密封层根据公知的技术来施加，因此不构成本发明的创新方面。
将密封层的暴露于空气的表面用紫外灯照射15分钟。使用的灯在500W/m2与1000W/m2之间的辐出度范围内和在200nm与400nm之间的波长范围内放射(emits)。
在用UV辐射处理期间，定期地测量进行了处理的表面的粘性，识别出粘性的逐步降低。发现了在照射15分钟之后，照射的表面的粘性与初始粘性相比降低了大约80％。
为了核实本发明的处理主题(treatment subject)是否会危害密封层整体的效果，测量暴露于辐射的表面的粘度和粘性值，还测量在刺穿其上施加了所述处理的轮胎之后的压力保持。
对于本发明的处理主题的效果的重要评价，对经历了UV辐射的层和同样的但是未经历UV辐射的密封层二者测量上述参数。关于两种密封层所记录的值之间的比较能够揭示本发明的处理主题的施加是否不仅在表面粘性方面，还在对于密封层的效果重要的特性方面具有效果。
根据ISO13145标准过程获得粘度测量，同时根据D1876标准过程获得粘性测量。
在相同条件下，对其上施加了未经历UV辐射处理的密封层和经历了15分钟的UV辐射的密封层的轮胎进行压力保持试验。在使轮胎充气至相同的内压之后，使它们经历相同的刺穿条件，随后移除用于刺穿的物体。对于经历该试验的各轮胎，评价刺穿(和随后移除物体)24小时后压力的保持。
表II以相对于未经历UV辐射处理的密封层的指数化形式，示出上述试验的值。
表II
处理前 处理后
粘度 100 100
压力保持 100 100
粘性 100 20
从表II的值中，可以看出，当本发明的处理主题造成表面粘性的显著降低时，粘度和压力保持特性不通过使用UV辐射的照射而更改。
换言之，本发明的处理解决了现有技术中的问题，显著降低施加于轮胎的内腔上的密封层的暴露于空气的表面的粘性，而无论如何都没有危害其密封性能。

Claims (5)

1.一种将密封层施加于轮胎中的方法，所述方法包括配置步骤，其中将密封层配置在气密层的面向轮胎的内腔的自由表面上；所述方法的特征在于：其包括降低粘性的步骤，其中使配置在所述气密层上的所述密封层的暴露于空气的表面经历UV辐射的直接作用。
2.根据权利要求1所述的方法，其特征在于：所述UV辐射的波长范围为200～400nm。
3.根据权利要求1所述的方法，其特征在于：所述UV辐射的辐出度范围为250W/m2～1500W/m2。
4.根据权利要求3所述的方法，其特征在于：所述UV辐射的辐出度范围为500W/m2～1000W/m2。
5.根据权利要求1所述的方法，其特征在于：使所述暴露于空气的表面经历时间量范围为5分钟～15分钟的UV辐射。
CN201680070861.4A 2015-12-02 2016-12-02 轮胎的密封层的处理方法、密封层和轮胎 Active CN108367520B (zh)

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JP2022021681A (ja) * 2020-07-22 2022-02-03 横浜ゴム株式会社 タイヤの製造方法および装置

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ITUB20156094A1 (it) 2017-06-02
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US20190224933A1 (en) 2019-07-25
US10688743B2 (en) 2020-06-23

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