CN101067467A - 压缩空气制动管线 - Google Patents
压缩空气制动管线 Download PDFInfo
- Publication number
- CN101067467A CN101067467A CNA2007101006306A CN200710100630A CN101067467A CN 101067467 A CN101067467 A CN 101067467A CN A2007101006306 A CNA2007101006306 A CN A2007101006306A CN 200710100630 A CN200710100630 A CN 200710100630A CN 101067467 A CN101067467 A CN 101067467A
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- China
- Prior art keywords
- layer
- pipe
- polyamide
- weight
- molding compositions
- Prior art date
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- Granted
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- 238000000465 moulding Methods 0.000 claims abstract description 27
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Abstract
本发明涉及一种管,其含下列各层:由含至少40重量%的聚酰胺并且其单体单元平均含至少8个碳原子的模塑物料制成的外层以由聚丙烯模塑物料制成的层,其中a)该管的外直径为6-20mm,b)该壁厚为1.0-2.0mm,c)该聚丙烯层的厚度为壁厚的25-75%,该管用作压缩空气制动管线,该管线可廉价制备,并具有高的破裂强度及优良的低温冲击韧性。
Description
技术领域
本发明的主题在于适于压缩空气制动管线的导管,其含至少一层聚酰胺层和至少一层聚丙烯层。
背景技术
压缩空气制动系统常用于重型汽车如拖拉机等中。在该系统中的制动系统是通过经管道传导的压缩空气触发。
目前,压缩空气制动管线主要由单层PA11管或PA12管制成;此外还有多层解决方案,其可通过织物增强来达到高柔性下的高破裂压力(Berstdruck)。在机械和化学要求不高的情况下,主要使用基于聚氨酯的体系。这里特别提及半拖车市场和替换件市场。该体系在价格上低于基于PA11或PA12的系统,但在机械强度和耐化学试剂特性上有明显的缺点。
高级聚丙酰胺如PA612、PA11或PA12是耐裂纹形成的以及耐燃料、油和水的作用。此外,它们与PA6不同,还不易经由氯化锌形成应力裂纹。但是它们较昂贵。为适应市场价格压力,在低价代用品上做了大量工作。
从DE-OS 3715251已知一种可用作压力空气制动管线的双层管。其由厚的聚酰胺如PA12的外层和薄的聚烯烃如以马来酸酐接枝的聚丙烯内层组成,该聚丙烯作为对压力介质中存在的醇的阻挡层。在其另一研究中,该DE-C-3821723中的管还包括有由聚酰胺制成的内侧保护层。但与单层聚酰胺管相比,这类管无价格优点。
WO 01/64436中描述了一种具有聚酰胺-内层的多层管;其中间层和外层由较精确规格的聚丙烯-模塑物料制成。该管可适用于燃料管线系统、压力传导管线和其它在汽车制造中所用的管线。但具有聚丙烯-外层的管还尤其由于该聚丙烯的耐老化性不足而受非难。
另一适于压缩空气管线的技术解决方案描述于DE-A-10137863中;该方案是一种具有下列层序的管:PA11或PA12/粘附助剂/冲击韧性改进的PA6或PA66;视需要还接着另一层粘附助剂和由PA11或PA12制成的最终层。另外该DE-A-10137863的管还可具有下列层序:PA612/冲击韧性改进的PA6或PA66/PA612。因为该PA6层或PA66层存在于未经保护的正面,所以在该体系中不耐氯化锌就成了关键性问题。
发明内容
本发明的目的在于避免上述缺点并特别是提供一种价格低的管,该管满足对压缩空气制动管线在耐化学试剂、发动机油、氯化锌和道路盐方面的要求,并且该管具有高的耐破裂强度(Berstdruck-festigkeit)以及优良低温冲击韧性。
本发明的任务是通过含下列层的管实现的:
I.由模塑物料制成的外层,该模塑物料含至少40重量%,至少45重量%,至少50重量%,至少55重量%或至少60重量%的聚酰胺,其单体单元平均含至少8,至少9或至少10个碳原子;
II.任选的由促进粘附的模塑物料制成的层;
III.由聚丙烯模塑物料制成的层,
其中这些层优选直接逐层实施。
在一个优选实施方案中,视需要在根据III的层上邻接另一根据II的层和另一根据I的层,以使外层和内层均由聚酰胺模塑物料制成。在该对称层序情况下,层结构I/III/I和I/II/III/II/I是优选的。
该管的外直径为6-20mm,优选7-16mm,而壁厚为1.0-2.0mm。根据III的层的厚度为该壁厚的25-75%,优选30-65%,特别优选35-60%。而根据II的层的层厚或根据II的多个层的厚度各为0.02-0.2mm,优选0.04-0.16mm,特别优选0.06-0.14mm。
根据I的层的聚酰胺可由二胺和二羧酸的组合制备、由ω-氨基羧酸或相应的内酰胺制备。该ω-氨基羧酸或该内酰胺含有至少8,至少9或至少10个碳原子。在内酰胺混合物情况下,该值是算术平均值。在二胺和二羧酸的组合情况下,二胺和二羧酸的碳原子的算术平均值必须至少是8,至少是9或至少是10。适用的聚酰胺例如是:PA610(可由六亚甲基二胺[6个碳原子]和癸二酸[10个碳原子]制备,由此在单体单元中的平均碳原子为8)、PA88(可由八亚甲基二胺和1,8-辛二酸制备)、PA8(可由辛内酰胺制备)、PA612、PA810、PA108、PA9、PA614、PA812、PA128、PA1010、PA10、PA814、PA148、PA1012、PA11、PA1014、PA1212和PA12。该聚酰胺的制备属现有技术。当然也可使用基于聚酰胺的共聚酰胺,视需要也可同时使用单体例如己内酰胺,优选该碳原子的平均数符合上述条件。
该聚酰胺也可是聚醚酯酰胺或聚醚酰胺。聚醚酰胺原则上是已知的,例如从DE-OS 3006961中已知。其含聚醚二胺作为共聚单体。适用的聚醚二胺是通过相应的聚醚二醇经由还原性胺化的转化而得或通过丙烯腈的偶联并随后氢化而得(例如EP-A-0434244;EP-A-0296852)。其数均分子量通常为230-4000;其聚醚酰胺的含量优选为5-50重量%。
市售可得的由丙二醇衍生的聚醚二胺可从Huntsman公司以牌号JEFFAMIND-型购得。基本上也适用的还有由1,4-丁二醇或1,3-丁二醇衍生的聚醚二胺,或混合结构的聚醚二胺,例如具有由二醇衍生的单元的无序或嵌段分布的聚醚二胺。
也可使用各种聚酰胺的混合物,其条件为有足够的相容性。相容的聚酰胺组合是本领域技术人员所熟知的;例如该组合为PA12/PA1012、PA12/PA1212、PA612/PA12、PA613/PA12、PA1014/PA12和PA610/PA12。在有疑问时,可通过例行实验确定相容的组合。
该聚酰胺优选具有过量的氨端基,该过量通常源自在制备时使用二胺作为分子量调节剂。氨端基过量也可通过欠氨基的和富氨基的聚酰胺的混合来调节。氨端基与羧端基的比例应为至少51∶49,优选至少55∶45,特别优选至少60∶40和尤其优选是至少70∶30。
根据I的层的模塑物料含除聚酰胺外还可含其它成分例如冲击韧性改性剂、其它热塑性塑料、增塑剂和其它通常的添加剂。唯一的要求是该聚酰胺形成该模塑物料的基质。
适用的冲击韧性改性剂例如是乙烯/α-烯烃共聚物,优选选自:
a)含20-96,优选25-85重量%乙烯的乙烯/C3至C12α-烯烃-共聚物。作为C3至C12α-烯烃例如可使用丙烯、1-丁烯、1-戊烯、1-己烯、1-辛烯、1-癸烯或1-十二碳烯。其典型实例是乙烯-丙烯橡胶和LLDPE和VLDPE。
b)含20-96,优选25-85重量%乙烯和最大约为10重量%的非共轭二烯如双环(2,2,1)庚二烯、1,4-己二烯、二环戊二烯或5-亚乙基降冰片烯的乙烯/C3至C12α-烯烃/非共轭二烯三聚物。作为C3至C12α-烯烃合适的是例如丙烯、1-丁烯、1-戊烯、1-己烯、1-辛烯、1-癸烯或1-十二碳烯。
例如借助于齐格勒-纳塔催化剂制备这种共聚物或三聚物是现有技术。
另一些适用的冲击韧性改性剂是苯乙烯-乙烯/丁烯嵌段共聚物。优选便用苯乙烯-乙烯/丁烯-苯乙烯嵌段共聚物(SEBS),其通过苯乙烯-丁二烯-苯乙烯嵌段共聚物的氢化而得。但也可使用二嵌段体系(SEB)或多嵌段体系。这类嵌段共聚物是现有技术。
这类冲击韧性改性剂优选含酸酐基,该酸酐基是以已知方法通过主链聚合物与不饱的二羧酸酐、不饱和的二羧酸或不饱和的二羧酸单烷基酯的热反应或自由基反应以一定浓度引入,该浓度足以在聚酰胺上良好键合。适用的反应剂例如是马来酸、马来酸酐、马来酸一丁酯、富马酸、柠檬酸酐、乌头酸或衣康酸酐。以这种方法优选将0.1-4重量%的不饱和酸酐接枝在冲击韧性改性剂上。按现有技术,也可将不饱和二羧酸酐或其前体与其它不饱和单体如苯乙烯、α-甲基苯乙烯或茚一起接枝。
另一些适用的冲击韧性改性剂是含下列单体单元的共聚物:
a)20-94.5重量%的含2-12碳原子的一种或多种α-烯烃,
b)5-79.5重量%的一种或多种丙烯酸化合物,其选自:
-丙烯酸或甲基丙烯酸或其盐,
-丙烯酸或甲基丙烯酸与C1至C12醇的酯,视需要其可带有游离羟官能团或环氧官能团,
-丙烯腈或甲基丙烯腈,
-丙烯酰胺或甲基丙烯酰胺,
c)0.5-50重量%的烯属不饱和环氧化物、羧酸酐、羧酸酰亚胺、唑啉或嗪酮。
这些共聚物例如由下列单体组成,这并不是穷尽性的列表:
a)α-烯烃例如乙烯、丙烯、1-丁烯、1-戊烯、1-己烯、1-辛烯、1-癸烯或1-十二烷烯;
b)丙烯酸、甲基丙烯酸或其盐,例如以Na或Zn2作为相反离子;丙烯酸甲酯、丙烯酸乙酯、丙烯酸正丙酯、丙烯酸正丁酯、丙烯酸异丁酯、丙烯酸正己酯、丙烯酸正辛酯、丙烯酸2-乙基己酯、丙烯酸异壬基酯、丙烯酸十二烷基酯、甲基丙烯酸甲酯、甲基丙烯酸乙酯、甲基丙烯正丙酯、甲基丙烯酸正丁酯、甲基丙烯酸异丁酯、甲基丙烯酸-2-乙基己基酯、丙烯酸羟乙酯、甲基丙烯酸-4-羟丁基酯、丙烯酸缩水甘油酯、甲基丙烯酸缩水甘油酯、丙烯腈、甲基丙烯腈、丙烯酰胺、N-甲基丙烯酰胺、N,N-二甲基丙烯酰胺、N-乙基丙烯酰胺、N-羟乙基丙烯酰胺、N-丙基丙烯酰胺、N-丁基丙烯酰胺、N-(2-乙基己基)丙烯酰胺、甲基丙烯酰胺、N-甲基甲基丙烯酰胺、N,N-二甲基甲基丙烯酰胺、N-乙基甲基丙烯酰胺、N-羟乙基甲基丙烯酰胺、N-丙基甲基丙烯酰胺、N-丁基甲基丙烯酰胺、N,N-二丁基甲基丙烯酰胺、N-(2-乙基己基)甲基丙烯酰胺;
c)乙烯基环氧乙烷、烯丙基环氧乙烷、丙烯酸缩水甘油酯、甲基丙烯酸缩水甘油酯、马来酸酐、乌头酸酐、衣康酸酐、此外由这些酸酐通过与水反应形成的二羧酸;马来酰亚胺、N-甲基马来酰亚胺、N-乙基马来酰亚胺、N-丁基马来酰亚胺、N-苯基马来酰亚胺、乌头酸酰亚胺、N-甲基乌头酸酰亚胺、N-苯基乌关酸酰亚胺、衣康酸酰亚胺、N-甲基衣康酸酰亚胺、N-苯基衣康酸酰亚胺、N-丙烯酰己内酰胺、N-甲基丙烯酰己内酰胺、N-丙烯酰月桂内酰胺、N-甲基丙烯酰月桂内酰胺、乙烯基唑啉、异丙基唑啉、烯丙基唑啉、乙烯基嗪酮或异丙基唑啉。
在应用丙烯酸缩水甘油酯或甲基丙烯酸缩水甘油酯时,这些也同时起丙烯酸化合物b)的作用,以便在足够量的(甲基)丙烯酸缩水甘油酯时,不需含其它丙烯酸化合物。在该特定实施方案中,该共聚物含下列单体单元:
a)20-94.5重量%的含2-12碳原子的一种或多种α-烯烃,
b)0-79.5重量%的一种或多种丙烯酸化合物,其选自:
-丙烯酸或甲基丙烯酸或其盐,
-丙烯酸或甲基丙烯酸与C1-C12醇的酯,
-丙烯腈或甲基丙烯腈,
-丙烯酰胺或甲基丙烯酰胺,
c)0.5-80重量%的丙烯酸或甲基丙烯酸的含环氧化物基的酯,其中b)和c)的总量至少为5.5重量%。
该共聚物可含少量的其它共聚单体,只要其不明显有损于该特性,这些共聚单体例如马来酸二甲基酯、富马酸二丁基酯、衣康酸二乙基酯或苯乙烯。
这类共聚物的制备属现有技术。其各种不同类型均可从市售产品得到,例如牌号为LOTADER(Arkema;乙烯/丙烯酸酯/三组分或乙烯/甲基丙烯酸缩水甘油酯)。
在一个优选实施方案中,该根据I的层的模塑物料含下列成分:
1.60-96.5重量份的聚酰胺,
2.3-39.5重量份的含酸酐基的冲击韧性成分,该冲击韧性成分选自乙烯/α-烯烃共聚物和苯乙烯-乙烯/丁烯嵌段共聚物,
3.0.5-20重量份的含下列单体单元的共聚物:
a)20-94.5重量%的含2-12碳原子的一种或多种α-烯烃,
b)5-79.5重量%的一种或多种丙烯酸化合物,其选自:
-丙烯酸或甲基丙烯酸或其盐,
-丙烯酸或甲基丙烯酸与C1-C12醇的酯,视需要其可带有
游离羟官能团或环氧官能团,
-丙烯腈或甲基丙烯腈,
-丙烯酰胺或甲基丙烯酰胺,
c)0.5-50重量%的烯属不饱和环氧化物、羧酸酐、羧酸酰亚胺、唑啉或嗪酮,
其中1、2、3的成分的重量份之和为100。
在另一个优选实施方案中,该模塑物料含下列成分:
1.65-90重量份,特别优选70-85重量份的聚酰胺,
2.5-30重量份,特别优选6-25重量份,尤其优选7-20重量份的冲击韧性成分,
3.0.6-15重量份,特别优选0.7-10重量份的共聚物,其优选含下列单体单元:
a)30-80重量%的一种或多种α-烯烃,
b)7-70重量%,特别优选10-60重量%的一种或多种丙烯酸化
合物,
c)1-40重量%,特别优选5-30重量%的烯属不饱和环氧化物、羧酸酐、羧酸酰亚胺、唑啉或嗪酮。
另一种可含于根据I的层的模塑物料中的热塑性塑料主要是聚烯烃。如在上面的冲击韧性改性剂中所述,在一种实施方案中该聚烯烃可含有酸酐基,视需要也可与未官能化的冲击韧性改性剂共存。在另一实施方案中,该聚烯烃是未官能化的,并且在模塑物料中与官能化的冲击韧性改性剂或功能化的聚烯烃组合存在。术语“官能化”意指该根据现有技术的聚合物提供可与聚酰胺端基起反应的基,例如酸酐基、羧酸基、环氧化物基或唑啉基。下列组成是优选的:
1.50-95重量份的聚酰胺,
2.1-49重量份的官能化的或未官能化的聚烯烃,以及
3.1-49重量份的官能化的或未官能化的冲击韧性改性剂,
其中成分1、2和3的总重量份为100。
聚烯烃包括例如聚乙烯或聚丙烯。原则上可使用各种市售类型。如可考虑高、中或低密度的线性聚乙烯、LDPE、乙烯-丙烯酸酯共聚物、乙烯-乙酸乙烯基酯共聚物、全同立构或无规立构均聚丙烯、丙烯与乙烯和/或1-丁烯的无规共聚物、乙烯-丙烯嵌段共聚物等。该聚烯烃也可按各种已知方法制备,例如齐格勒-纳塔法、菲利浦法、借助于金属茂或自由基的方法。
此外,也可使用其它聚酰胺如PA6作为另外的热塑性塑料,其用量低于按权利要求所使用的聚酰胺的量。
在一个优选实施方案中,该模塑物料含1-25重量%,特别优选2-20重量%,尤其优选3-15重量%的增塑剂。
在聚酰胺中增塑剂及其使用是已知的。关于适于聚酰胺的增塑剂的概述可参阅Gchter/Müller,Kunststoffadditive,C.Hanser Verlag,第2版,第296页。
通常适合用作增塑剂的化合物例如是在醇组分中含2-20碳原子的对羟基苯甲酸的酯或在胺组分中含2-12碳原子的芳基磺酸的酰胺,优选苯磺酸的酰胺。
作为增塑剂还尤其可用对羟基苯甲酸乙基酯、对羟基苯甲酸辛基酯、对羟基苯甲酸-异十六烷基酯、甲苯磺酸-正辛基酰胺、苯磺酸-正-丁基酰胺或苯磺酸-2-乙基己基酰胺。
此外,该模塑物料还可含少量的为调节某些特性所需的添加剂。其实例是颜料或填料如炭黑、二氧化钛、硫化锌、硅酸盐或碳酸盐;加工助剂如蜡、硬脂酸锌或硬脂酸钙;阻燃剂如氢氧化镁、氢氧化铝或三聚氰胺氰脲酸酯;玻璃纤维、抗氧化剂、UV-稳定剂以及赋予产品抗静电特性或导电性的添加物如碳纤维、石墨原纤、不锈钢纤维或导电炭黑。
在存在有两层根据I的层的对称层序中,各模塑物料的聚酰胺种类以及其它成分的种类和量可以是不同的。但优选的是,两种模塑物料是相同的,因为该两层可由单一的挤出机供料。
为确保管线在技术应用上有所需的柔性,该聚酰胺模塑物料即形成一层或多层根据I的层的模塑物料的按ISO 527的拉伸弹性模量为300-800MPa,特别优选400-600MPa。
根据II的层的粘附助剂种类是不重要的。可使用足以牢固地相互粘接根据I的层和根据III的层的各种粘附助剂,以使其在制备和其后的应用中不发生脱层。在最简单情况下,该粘附助剂是含有酸酐基的聚丙烯,该基是以已知方法通过聚丙烯与不饱的二羧酸酐、不饱和的二羧酸或不饱和的二羧酸单烷基酯的热反应或自由基反应以一定的浓度引入,该浓度足以良好键合相邻层的聚酰胺。适用的反应剂例如是马来酸、马来酸酐、马来酸一丁酯、富马酸、乌头酸或衣康酸酐。以这种方法优选将0.1-4重量%的不饱和酸酐接枝在聚丙烯上。按现有技术,也可将不饱和二羧酸酐或其前体与其它不饱和单体例如苯乙烯、α-甲基苯乙烯或茚一起接枝。但该粘附助剂也可以是这种含酸酐基的聚丙烯和聚酰胺的共混物。此外,该粘附助剂也可含未官能化的聚丙烯。其它适用的粘附助剂是由聚酰胺、官能化的乙烯-丙烯橡胶和未官能化的聚丙烯组成。适用的还有在EP-A-1216823中公开的粘附助剂。如果该粘附助剂含聚酰胺,则可选用与根据I的层中相同的聚酰胺或与其是足够相容的聚酰胺,从而粘附于其上。
根据III的层的聚丙烯模塑物料原则上可含市售的各类聚丙烯,例如全同立构的或间同立构的均聚丙烯、丙烯与乙烯和/或1-丁烯的无规共聚物、乙烯-丙烯嵌段共聚物等。该聚丙烯也可按各种已知方法制备,例如齐格勒-纳塔法或借助于金属茂催化法。冲击韧作成分可含例如EPM橡胶或EPDM橡胶或SEBS。此外,其也可含通常的助剂和添加剂例如颜料或填料如炭黑、二氧化钛、硫酸锌、硅酸盐或碳酸盐,稳定剂或加工助剂如蜡、硬脂酸锌或硬脂酸钙。在模塑物料中聚丙烯的一般含量例如是至少50重量%,至少60重量%,至少70重量%,至少80重量%或至少90重量%。
在一种可能的实施方案中,该所用的最里层的聚丙烯的按ISO1133(230℃/2.16kg)的熔体流动速率(MFR)为0.1-3g/10min,特别优选0.15-2g/10min,尤其优选0.18-1.5g/10min,最特别优选为0.2-1g/10min。
根据III的层的聚丙烯优选是所谓的丙烯-乙烯嵌段共聚物,常常也称为非均相共聚物。这类非均相共聚物例如可以在两相过程中制备,其可按如下进行:首先例如用齐格勒-纳塔催化剂制备高全同立构聚丙烯,在某些情况下可存在少量的乙烯,产生无规立构聚合物。该材料起非均相共聚物的基质作用。在第二反应步骤中(视需要在另一反应器中)视需要可引入第二催化剂例如金属茂催化剂。这时进行乙烯与丙烯的共聚反应,该聚合反应在第一聚合物的空腔中进行。由此嵌入第二聚合物。
在一个优选实施方案中,该嵌段共聚物或非均相共聚物含至少0.5重量%,至少0.6重量%,至少0.7重量%,至少0.8重量%或至少0.9重量%以及最大20重量%,最大15重量%,最大12重量%,最大10重量%或最大8重量%的共聚乙烯。此外,可共聚直至15重量%的1-丁烯。
根据III的层的聚丙烯可以是官能化的,例如用酸酐基官能化,如上面对根据II的层的聚丙烯所述。由此可在根据I的层上实现直接粘附,以致在此情况下不需应用根据II的粘附助剂层。
当然,在此情况下也可应用未官能化的和官能化的聚丙烯的混合物,例如其重量比为95∶5-1∶99,优选75∶25-25∶75,特别优选60∶40-40∶60。
在要求高破裂强度情况下,该管还可含现有技术的织物增强物。其可置于层内或层间。在最简单的情况下将织物层施加于管的外层上并接着是橡胶层。作为橡胶可使用可硫化橡胶或热塑性弹性体(例如Santopren)。涂覆橡胶也可在未施加织物层下进行。
本发明的管可作为压缩空气制动管线用于载重汽车、半拖车、载重汽车的拖车或拖车中。在载重汽车中该管道的运行压力通常达12.5bar,在半拖车或拖车中为8.5bar。
具体实施方式
下面举例说明本发明。
实施例
在实施例中使用下列模塑物料:
PA:VESTAMIDX7297,其为含增塑剂的经冲击韧性改性的
PA12,其氨端基含量为40mmol/kg,羧端基含量为12
mmol/kg和拉伸弹性模量为400MPa。
HV:ADMERQB520E,其为以马来酸酐官能化的聚丙烯。
PP1:VESTAMIDPP SX8100,其为基于丙烯的经稳定化的非
均相共聚物,其乙烯含量为2.4重量%(用13C-NMR测定),
按ISO 1133的MFR 230/2.16为0.4cm3/10min。
PP2:50重量%的VESTAMIDPP SX8100与50重量%的
ADMERQB520E的混合物。
在多层挤出机上制备实施例1-10的多层管,其外直径为8mm,壁厚为1mm,接着对其进行检验。详情列于表1。可看出,甚至在相当大的聚丙烯含量情况下也可满足机械性能和特别是破裂强度方面的要求。
表1:管结构和检验结果
实施例 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
1.层(外层)2.层3.层4.层5.层 | 0.1mmPA0.1mmHV0.6mmPP10.1mmHV0.1mmPA | 0.15mmPA0.1mmHV0.5mmPP10.1mmHV0.15mmPA | 0.2mmPA0.1mmHV0.4mmPP10.1mmHV0.2mmPA | 0.25mmPA0.1mmHV0.3mmPP10.1mmHV0.25mmPA | 0.2mmPA0.1mmHV0.7mmPP1 | 0.3mmPA0.1mmHV0.6mmPP1 | 0.4mmPA0.1mmHV0.5mmPP1 | 0.5mmPA0.1mmHV0.4mmPP1 | 0.5mmPA0.5mmPP2 | 0.25mmPA0.5mmPP20.25mmPA |
低温冲击强度[断裂率]-新挤出,按DIN 73378 6.4.6,-40℃-新挤出,按SAEJ2260 7.6,-40℃-新挤出,按SAEJ844,-40℃ | 1/102/101/10 | 0/100/100/10 | 0/100/100/10 | 0/101/100/10 | 0/100/102/10 | 0/100/101/10 | 0/100/100/10 | 0/100/100/10 | 0/100/100/10 | 0/100/100/10 |
拉伸检验,按ISO527-拉伸强度[N/mm2]断裂伸长率[%]-拉伸弹性模量[N/mm2] | 23.7253741 | 24,6263695 | 25.2237622 | 26.5231554 | 22.6237742 | 23.3205693 | 24.0225593 | 26.2195589 | 25.0198580 | 26.0215612 |
破裂压力,按SAEJ844在10bar/s[bar]-在23℃-在100℃ | 63.3 | 60.520.0 | 58.8 | 62.4 | 58.122.0 | 63.3 | 60.8 | 61.3 |
实施例 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
周向应力,按SAE J844[MPa]-在23℃-在100℃ | 23.5 | 22.87.6 | 23.6 | 23.4 | 23.18.7 | 24.2 | 22.1 | 21.7 | ||
最小弯曲半径,按SAE J844[mm] | 40 | 37 | 40 | 37 | 38 | 40 | 40 | 37 | 39 | 37 |
弯曲特性,按GME 08100 7.7-最大弯曲力-最大弯曲力下的挠度-在3.5mm挠度下的弯曲力 | 74.54.972.2 | 74.85.072.3 | 71.25.667.4 | 62.76.158.6 | 74.94.673.3 | 78.54.976.2 | 66.95.064.8 | 73.35.469.6 | 68.35.166.8 | 71.25.068.7 |
Claims (7)
1.一种管,其含下列各层:
I由模塑物料制成的外层,该模塑物料含至少40重量%的聚酰胺,其单体单元平均含至少8个碳原子,以及
III.由聚丙烯模塑物料制成的层,
其中
a)该管的外直径为6-20mm,
b)该壁厚为1.0-2.0mm,
c)该根据III的层的厚度为壁厚的25-75%。
2.权利要求1的管,其特征在于,在根据I的层和根据III的层之间设置下列层:
II.由促进粘附的模塑物料制成的层,该层厚度为0.02-0.2mm。
3.前述权利要求之一的管,其特征在于,视需要在根据III的层上邻接另一根据II的层和另一根据I的层。
4.前述权利要求之一的管,其特征在于,根据I的层的聚酰胺模塑物料含选自下列的其它成分:冲击韧性改性剂、其它热塑性塑料、增塑剂、颜料、填料、加工助剂、阻燃剂、玻璃纤维、抗氧化剂、UV-稳定剂以及赋予产品抗静电特性或导电性的添加物,其中该聚酰胺形成模塑物料的基质。
5.前述权利要求之一的管,其特征在于,根据I的层的聚酰胺模塑物料含下列成分:
-50-95重量份的聚酰胺,
-1-49重量份的官能化的或未官能化的聚烯烃,以及
-1-49重量份的官能化的或未官能化的冲击韧性改性剂。
其中这些成分的重量份总和为100。
6.前述权利要求之一的管,其特征在于,形成一层根据I的层或多层根据I的层的模塑物料的E-模量为300-800MPa。
7.前述权利要求之一的管,其特征在于,该管是压缩空气制动管线。
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DE102006011493A DE102006011493A1 (de) | 2006-03-14 | 2006-03-14 | Druckluftbremsleitung |
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CN104845355A (zh) * | 2008-12-31 | 2015-08-19 | 巴斯夫欧洲公司 | 含热塑性聚氨酯与聚酰胺6/66共聚物的制品 |
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CN110144116A (zh) * | 2018-02-13 | 2019-08-20 | Ems 专利股份公司 | 柔性多层压缩空气管材 |
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Cited By (7)
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CN104845355A (zh) * | 2008-12-31 | 2015-08-19 | 巴斯夫欧洲公司 | 含热塑性聚氨酯与聚酰胺6/66共聚物的制品 |
US9206315B2 (en) | 2008-12-31 | 2015-12-08 | Basf Se | Article comprising thermoplastic polyurethane and polyamide 6/66 copolymer |
US9790365B2 (en) | 2012-06-12 | 2017-10-17 | Basf Se | Thermoplastic polyurethane composition |
CN102705691A (zh) * | 2012-06-29 | 2012-10-03 | 宁夏青龙塑料管材有限公司 | 一种耐油耐有机溶剂腐蚀增强聚乙烯复合管材 |
CN102705691B (zh) * | 2012-06-29 | 2015-04-15 | 宁夏青龙塑料管材有限公司 | 一种耐油耐有机溶剂腐蚀增强聚乙烯复合管材 |
CN110144116A (zh) * | 2018-02-13 | 2019-08-20 | Ems 专利股份公司 | 柔性多层压缩空气管材 |
CN110144116B (zh) * | 2018-02-13 | 2023-09-29 | Ems 专利股份公司 | 柔性多层压缩空气管材 |
Also Published As
Publication number | Publication date |
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EP1834763A1 (de) | 2007-09-19 |
BRPI0700736B1 (pt) | 2019-11-05 |
RU2007109107A (ru) | 2008-09-20 |
KR101361895B1 (ko) | 2014-02-12 |
KR20070093851A (ko) | 2007-09-19 |
JP4741533B2 (ja) | 2011-08-03 |
US20070231520A1 (en) | 2007-10-04 |
RU2469236C2 (ru) | 2012-12-10 |
DE102006011493A1 (de) | 2007-09-20 |
CN101067467B (zh) | 2010-12-08 |
EP1834763B1 (de) | 2014-12-31 |
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US7579058B2 (en) | 2009-08-25 |
BRPI0700736A (pt) | 2007-11-06 |
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