CN108343790A - 用于汽车电池系统的冷却管道及其制备方法 - Google Patents
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
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- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- 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
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- 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
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- 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
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- B29L2023/00—Tubular articles
- B29L2023/22—Tubes or pipes, i.e. rigid
Abstract
本发明公开一种用于汽车电池系统的冷却管道及其制备方法。该冷却管道包括同轴的相邻周面贴合的三层管道,从内至外依次为内层管道、中层管道和外层管道;内层管道的材质为热塑性三元乙丙动态硫化橡胶;中层管道的材质为聚丙烯基改性三元乙丙动态硫化橡胶;外层管道的材质为尼龙11或者尼龙12。该制备方法包括如下步骤:将TPV塑化、将聚丙烯基改性三元乙丙动态硫化橡胶塑化、将尼龙11或尼龙12塑化,分别得流态状的内层管道原料、中层管道原料和外层管道原料;将所得各层原料共挤,即可。制得的冷却管道的重量仅为现有技术中橡胶管的30%,具有良好的耐水解性能、耐化学性和机械性能,且可以回收利用。
Description
技术领域
本发明涉及一种用于汽车电池系统的冷却管道及其制备方法。
背景技术
由于世界各国汽车排放要求的不断提高,各个工厂致力于开发以电池为动力的新能源车。与燃油系统的冷却管道不同,电池系统的冷却管道中流经的介质是主要成分为水的冷却液。因此,电池系统的冷却管道必须具有良好的耐水解性能,这样可以保证电池包干燥的系统环境,从而保证电池的使用寿命。
传统的冷却管道为三元乙丙橡胶(英文名称Ethylene Propylene DieneMonomer,缩写EPDM)制成的单层橡胶管,然而,EPDM单层橡胶管的壁厚一般为4mm以上,导致整个冷却管道系统很重,增加了汽车的百公里耗电量,同时大大占据了电池包内部的空间,不利于冷却管道的布局。此外,EPDM为热固性塑料,不能降解,也不能回收利用。
发明内容
本发明所要解决的技术问题是为了克服现有技术中的电池包中的冷却管道壁厚较厚而导致的整个冷却管道系统很重,增加了汽车的百公里耗电量,大大占据了电池包内部的空间,不利于冷却管道的布局的缺陷,而提供一种重量轻、体积小、便于回收利用且耐水解的用于汽车电池系统的冷却管道及其制备方法。该冷却管道的重量仅为现有技术中橡胶管的30%,可满足汽车轻量化的要求,便于在新能源汽车电池包中布局,且具有良好的耐水解性能、耐化学性和机械性能。此外,本发明的冷却管道的每层材料均为热塑性材料,可以回收利用。
本发明通过以下技术方案解决上述技术问题:
本发明提供一种用于汽车电池系统的冷却管道,其包括同轴的相邻周面贴合的三层管道,从内至外依次为内层管道、中层管道和外层管道;所述内层管道的材质为热塑性三元乙丙动态硫化橡胶;所述中层管道的材质为聚丙烯基改性三元乙丙动态硫化橡胶;所述外层管道的材质为尼龙11或者尼龙12。
本发明中,所述热塑性三元乙丙动态硫化橡胶(英文名称ThermoplasticVulcanizate,缩写TPV)为本领域常规,一般是指高度硫化的三元乙丙橡胶微粒分散在连续聚丙烯相中组成的高分子弹性体材料。所述TPV由原料制得,所述原料较佳地包括下述各组分:三元乙丙橡胶、聚丙烯、阻燃剂、炭黑、偶联剂和硫化剂;所述三元乙丙橡胶、聚丙烯、阻燃剂、炭黑、偶联剂和硫化剂的质量分数分别为25%~35%、25%~35%、20%~35%、5%~10%、1%~3%和1%~2%,各组分百分比之和为100%。所述TPV的型号较佳地为RTP2899X 121338,购于RTP公司。
本发明中,所述聚丙烯基改性三元乙丙动态硫化橡胶为本领域常规,所述聚丙烯基改性三元乙丙动态硫化橡胶由原料制得,所述原料较佳地包括下述各组分:三元乙丙橡胶、聚丙烯、接枝改性的聚丙烯、尼龙6、炭黑、偶联剂和硫化剂;所述三元乙丙橡胶、聚丙烯、接枝改性的聚丙烯、尼龙6、炭黑、偶联剂和硫化剂的质量分数分别为35%~40%、35%~45%、6%~12%、5%~10%、1%~3%和1%~2%,各组分百分比之和为100%。所述接枝改性的单体为本领域常规,较佳地为马来酸酐。所述聚丙烯基改性三元乙丙动态硫化橡胶的型号较佳地为RTP 6091B-60A BLACK,购于RTP公司。
本发明中,所述尼龙12的型号较佳地为L 25A H X BLACK 9992,购于EMS公司。
本发明中,所述冷却管道的壁厚较佳地为1.0~3.0mm,更佳地为1.25~2.0mm。
其中,所述内层管道的壁厚较佳地为0.05~1.5mm,更佳地为0.1~1.0mm。
其中,所述中层管道的壁厚较佳地为0.05~1.0mm,更佳地为0.05~0.4mm。
其中,所述外层管道的壁厚较佳地为0.1~1.5mm,更佳地为0.2~1.0mm。
本发明还提供上述冷却管道的制备方法,所述制备方法包括如下步骤:
(1)将TPV塑化,得流态状的内层管道原料;将聚丙烯基改性三元乙丙动态硫化橡胶塑化,得流态状的中管道原料;将尼龙11或尼龙12塑化,得流态状的外层管道原料;
(2)将所述流态状的内层管道原料、中层管道原料和外层管道原料共挤,即可。
本发明中,所述TPV塑化的温度较佳地为170~210℃,更佳地为180~200℃。
本发明中,所述聚丙烯基改性三元乙丙动态硫化橡胶塑化的温度较佳地为130~170℃,更佳地为140~160℃。
本发明中,所述尼龙11或尼龙12塑化的温度较佳地为190~240℃,更佳地为200~230℃。
本发明中,所述共挤的温度较佳地为200~230℃,更佳地为230℃。
在符合本领域常识的基础上,上述各优选条件,可任意组合,即得本发明各较佳实例。
本发明所用试剂和原料均市售可得。
本发明的积极进步效果在于:制得的冷却管道的重量仅为现有技术中橡胶管的30%,可满足汽车轻量化的要求,便于在新能源汽车电池包中布局,且具有良好的耐水解性能、耐化学性和机械性能。此外,本发明的冷却管道的每层材料均为热塑性材料,可以回收利用。
附图说明
图1为本发明冷却管道的径向剖面的结构示意图。
附图标号说明:
内层管道1
中层管道2
外层管道3
具体实施方式
下面通过实施例的方式进一步说明本发明,但并不因此将本发明限制在所述的实施例范围之中。下列实施例中未注明具体条件的实验方法,按照常规方法和条件,或按照商品说明书选择。
下述实施例中,所用试剂和原料均市售可得。
TPV的型号为RTP 2899 X 121338,购于RTP公司;聚丙烯基改性三元乙丙动态硫化橡胶的型号为RTP 6091 B-60A BLACK,购于RTP公司;尼龙12的型号为L 25 A H X BLACK9992,购于EMS公司。
实施例1
冷却管道的制备方法:
(1)将TPV在180℃下塑化,得流态状的内层管道原料;将聚丙烯基改性三元乙丙动态硫化橡胶在160℃下塑化,得流态状的中管道原料;将尼龙12在200℃下塑化,得流态状的外层管道原料;
(2)设定内层管道1的壁厚0.5mm,中层管道2的壁厚0.1mm,外层管道3的壁厚1mm,将流态状的内层管道原料、中层管道原料和外层管道原料在230℃下共挤,即可。
效果数据:测试5根所得冷却管道,其抗拉强度可达24~26MPa、断裂延伸率可达200%~250%、常温耐爆破强度可达35~40bar。
将所得冷却管道中通入120℃的冷却液(由水和乙二醇组成,其质量比为1:1),并将冷却液循环1250h后,对其进行低温落锤实验(测试温度-30℃,落球高度500mm,落球重量200g),测试样件(共5根)全部无断裂;进行常温爆破测试,其爆破压力能达到30~35bar。
实施例2
冷却管道的制备方法:
(1)将TPV在200℃下塑化,得流态状的内层管道原料;将聚丙烯基改性三元乙丙动态硫化橡胶在140℃下塑化,得流态状的中管道原料;将尼龙12在200℃下塑化,得流态状的外层管道原料;
(2)设定内层管道1的壁厚0.1mm,中层管道2的壁厚0.05mm,外层管道3的壁厚1.0mm,将流态状的内层管道原料、中层管道原料和外层管道原料在230℃下共挤,即可。
效果数据:测试5根所得冷却管道,其抗拉强度可达26~28MPa、断裂延伸率可达180%~220%、常温耐爆破强度可达30~35bar。
将所得冷却管道中通入120℃的冷却液(由水和乙二醇组成,其质量比为1:1),并将冷却液循环1250h后,对其进行低温落锤实验(测试温度-30℃,落球高度500mm,落球重量200g),测试样件(共5根)全部无断裂;进行常温爆破测试,其爆破压力能达到28~30bar。
Claims (9)
1.一种用于汽车电池系统的冷却管道,其特征在于,其包括同轴的相邻周面贴合的三层管道,从内至外依次为内层管道、中层管道和外层管道;所述内层管道的材质为热塑性三元乙丙动态硫化橡胶;所述中层管道的材质为聚丙烯基改性三元乙丙动态硫化橡胶;所述外层管道的材质为尼龙11或者尼龙12。
2.如权利要求1所述的冷却管道,其特征在于,所述热塑性三元乙丙动态硫化橡胶的型号为RTP 2899 X 121338;所述聚丙烯基改性三元乙丙动态硫化橡胶的型号为RTP 6091 B-60A BLACK;所述尼龙12的型号为L 25A H X BLACK 9992。
3.如权利要求1所述的冷却管道,其特征在于,所述冷却管道的壁厚为1.0~3.0mm,较佳地为1.25~2.0mm。
4.如权利要求3所述的冷却管道,其特征在于,所述内层管道的壁厚为0.05~1.5mm,较佳地为0.1~1.0mm;所述中层管道的壁厚为0.05~1.0mm,较佳地为0.05~0.4mm;所述外层管道的壁厚为0.1~1.5mm,较佳地为0.2~1.0mm。
5.一种如权利要求1-4任一项所述的冷却管道的制备方法,其特征在于,所述制备方法包括如下步骤:
(1)将所述热塑性三元乙丙动态硫化橡胶塑化,得流态状的内层管道原料;将所述聚丙烯基改性三元乙丙动态硫化橡胶塑化,得流态状的中管道原料;将所述尼龙11或尼龙12塑化,得流态状的外层管道原料;
(2)将所得流态状的内层管道原料、中层管道原料和外层管道原料共挤,即可。
6.如权利要求5所述的制备方法,其特征在于,所述热塑性三元乙丙动态硫化橡胶塑化的温度为170~210℃,较佳地为180~200℃。
7.如权利要求5所述的制备方法,其特征在于,所述聚丙烯基改性三元乙丙动态硫化橡胶塑化的温度为130~170℃,较佳地为140~160℃。
8.如权利要求5所述的制备方法,其特征在于,所述尼龙11或尼龙12塑化的温度为190~240℃,较佳地为200~230℃。
9.如权利要求5所述的制备方法,其特征在于,所述共挤的温度为200~230℃,较佳地为230℃。
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