CN107141760A - 一种汽车动力转向管及其生产方法 - Google Patents

一种汽车动力转向管及其生产方法 Download PDF

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CN107141760A
CN107141760A CN201710523012.6A CN201710523012A CN107141760A CN 107141760 A CN107141760 A CN 107141760A CN 201710523012 A CN201710523012 A CN 201710523012A CN 107141760 A CN107141760 A CN 107141760A
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power steering
vulcanizing agent
steering tube
automobile power
parts
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王定东
郭磊
邹惠芳
马妍
王峰
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Nanjing Orientleader Technology Co Ltd
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Abstract

本发明属汽车用橡胶件技术领域,特别是一种汽车动力转向管及其生产方法,内层材料采用丁腈橡胶组合物,外层材料采用氯醚橡胶组合物。其有益效果在于,采用氯醚橡胶作为外胶,原材料来源不受限制,工艺性能良好,同时具有良好的耐臭氧老化和热空气老化性能。

Description

一种汽车动力转向管及其生产方法
技术领域
本发明属汽车用橡胶件技术领域,涉及一种汽车动力转向管及其生产方法。
背景技术
伴随着汽车工业的飞速发展,动力转向器在汽车转向系统中的应用越来越普遍。动力转向管的稳定性和可靠性关系到汽车及人身的安全,这就要求胶管产品满足较高的耐热、耐油、耐压等性能要求。汽车行业内所使用的低压动力转向管基本上都以氯磺化聚乙烯橡胶(CSM)为主体材料。专利号为201410600898.6中公开了汽车动力转向管外胶层用橡胶的制备方法,采用了氯磺化聚乙烯橡胶,CSM具有较高的强度,较好的耐油性能等,但其加工工艺过程较难控制,挤出尺寸不好控制,这样导致该产品的生产厂家少,产量较低,不能满足市场日益增加的需求。专利号为200910311008.9中公开了一种动力转向管结构及橡胶配方,其公开为氯丁橡胶配方;但是氯丁橡胶的耐老化性能较差,同时我国对原生产于日本、美国和欧盟的进口氯丁橡胶继续征收反倾销税,限制了氯丁橡胶的使用。
氯醚橡胶是目前兼有耐油和耐寒性最好的一个胶种,耐油性能优于氯磺化聚乙烯,加工过程和挤出尺寸容易控制;同时耐热老化性能优于氯丁橡胶,原材料的选购不受限制,所以研制适用于汽车动力转向管的环保型氯醚橡胶组合物是很有必要的。
发明内容
本发明所要解决的技术问题是提供一种汽车动力转向管及其生产方法,以解决现有技术中的缺陷。
本发明公开了用于一种汽车动力转向管,内层材料采用丁腈橡胶组合物,外层材料采用氯醚橡胶组合物。
进一步的,所述氯醚橡胶组合物,按重量份数计,包括如下组分:
氯醚橡胶:100份、快压出炭黑N550:50~70份、增塑剂TOTM(偏苯三酸三辛酯):8~15份、脱模剂EF55(脂肪酸衍生物):1~3份、防老剂MB(巯基苯并咪唑):0.5~2份、防老剂RD(三甲基喹啉):1~3份、硬脂酸:0.5~1份、氧化镁:5~10份、轻质碳酸钙:2~8份、硫化剂:2~7份。
进一步的,所述硫化剂包括硫化剂TCY(三硫醇基硫代三嗪)、硫化剂H7(苯并噻唑类)、促进剂NA-22(乙撑硫脲)、促进剂DTDM(二硫代二吗啉)、促进剂TMTD(四甲基二硫代秋兰姆)中的几种。
优选的,所述硫化剂包括硫化剂TCY(三硫醇基硫代三嗪):0~1份、硫化剂H7(苯并噻唑类):0~3份、促进剂NA-22(乙撑硫脲):0~3份、促进剂DTDM(二硫代二吗啉):0~1份、促进剂TMTD(四甲基二硫代秋兰姆):0~1份中的几种。
上述组合物各组分的选取及其作用如下:
脱模剂EF55改善氯醚橡胶的工艺性能,避免发生混炼胶粘辊现象。氧化镁、轻质碳酸钙作为吸酸剂和硫化助剂,消耗氯醚橡胶中产生的氯化氢,同时有助于提高硫化程度和硫化速度。硫化剂TCY、硫化剂H7为氯醚橡胶的硫化剂,能够有效的提高氯醚橡胶的硫化程度;而单独使用时易引起焦烧,所以本发明中降低了其用量同时配合了常用促进剂,以改善氯醚橡胶的焦烧性能。组合物中不含铅、镍等种金属材料,是环保型氯醚橡胶组合物。
进一步的,本发明还公开了汽车动力转向管的生产方法,包括以下步骤:
步骤1、取配方量的各组分加入密炼机进行混炼形成混炼胶;
步骤2、由冷喂料机挤出内胶,再经缠绕机缠绕聚酯线,最后通过挤出机将外层混炼胶挤出包覆在聚酯线外面,形成管坯。
步骤3、将管坯套在专用模芯上,放入蒸汽硫化罐中,升温至160℃,经过30~45min硫化处理。
本发明的有益效果在于:采用氯醚橡胶作为外胶,具有良好的耐臭氧老化和热空气老化性能。
具体实施方式
下面结合实施例对本发明的具体实施方式作进一步描述,以下实施例仅用于更加清楚地说明本发明的技术实施例,而不能以此来限制本发明的保护范围。
实施例
下面结合具体实例对本发明的技术方案做进一步说明。
表1实施例1-5橡胶组合物的原料组分及其配比
原料组分(单位:g) 实施例1 实施例2 实施例3 实施例4 实施例5
氯醚橡胶 100 100 100 100 100
防老剂MB 0.5 1 0.5 1 2
防老剂RD 3 2 3 2 1
内脱模剂 1 3 2 3 1.5
炭黑N550 50 60 60 60 65
增塑剂TOTM 8 10 10 10 13
硬脂酸 0.5 1 1 0.5 1
氧化镁 8 8 5 10 6
碳酸钙 5 8 6 2 3
硫化剂TCY 1 0.5 0.5 1 0
硫化剂H7 0 0 1 0 3
促进剂NA-22 2 3 2 1 0
促进剂DTDM 0 1 0 0 0.5
促进剂TMTD 0 1 0.5 0.5 0
合计 179 198.5 191.5 191 196
为了进一步阐述本发明的有益效果,本发明使用现有技术进行了对比:
表2实施例1-5制得的橡胶组合物的性能参数
以上所述仅是本发明的优先实施方式,应当指出,对于本技术领域的普通技术人员来说,在不脱离本发明技术原理的前提下,还可以做出若干改进和润饰,这些改进和润饰也应视为本发明的保护范围。

Claims (5)

1.一种汽车动力转向管,其特征在于,内层材料采用丁腈橡胶组合物,外层材料采用氯醚橡胶组合物。
2.如权利要求1所述的汽车动力转向管,其特征在于,所述氯醚橡胶组合物,按重量份数计,包括如下组分:
氯醚橡胶:100份、快压出炭黑N550:50~70份、增塑剂TOTM(偏苯三酸三辛酯):8~15份、脱模剂EF55(脂肪酸衍生物):1~3份、防老剂MB(巯基苯并咪唑):0.5~2份、防老剂RD(三甲基喹啉):1~3份、硬脂酸:0.5~1份、氧化镁:5~10份、轻质碳酸钙:2~8份、硫化剂:2~7份。
3.如权利要求2所述的汽车动力转向管,其特征在于,所述硫化剂包括硫化剂TCY(三硫醇基硫代三嗪)、硫化剂H7(苯并噻唑类)、促进剂NA-22(乙撑硫脲)、促进剂DTDM(二硫代二吗啉)、促进剂TMTD(四甲基二硫代秋兰姆)中的几种。
4.如权利要求2所述的汽车动力转向管,其特征在于,所述硫化剂包括硫化剂TCY(三硫醇基硫代三嗪):0~1份、硫化剂H7(苯并噻唑类):0~3份、促进剂NA-22(乙撑硫脲):0~3份、促进剂DTDM(二硫代二吗啉):0~1份、促进剂TMTD(四甲基二硫代秋兰姆):0~1份中的几种。
5.一种汽车动力转向管的生产方法,其特征在于,包括如下步骤:
步骤1、取配方量的各组分加入密炼机混炼形成混炼胶;
步骤2、由冷喂料机挤出内胶,再经缠绕进行机缠绕聚酯线,最后通过挤出机将外层混炼胶挤出包覆在聚酯线外面,形成管坯。
步骤3、将管坯套在专用模芯上,放入蒸汽硫化罐中,升温至160℃,经过30~45min硫化处理。
CN201710523012.6A 2017-06-30 2017-06-30 一种汽车动力转向管及其生产方法 Pending CN107141760A (zh)

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CN105219058A (zh) * 2015-11-18 2016-01-06 南京七四二五橡塑有限责任公司 一种加工性能良好的环保型高性能氯醚橡胶

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Application publication date: 20170908