CN107189241A - 一种汽车密封条的生产工艺 - Google Patents
一种汽车密封条的生产工艺 Download PDFInfo
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Abstract
本发明涉及一种汽车密封条的生产工艺,与现有技术相比,本发明生产的密封条具有良好弹性和抗压缩变形、耐老化、臭氧、化学作用、较宽的使用温度范围,确保车身各部件之间连续性,避免结合部位产生气流分离,轻松化解周期性尾流,能降低高速行驶风噪,同时增强原车的气密性和防尘能力,工艺简单、配方合理,采用的原材料环保无毒,采用的阻燃剂热稳定性好、阻燃性能持久、无毒抑烟;本发明制备的汽车橡胶密封条具有优异的阻燃、抗老化、耐环境、耐天候性能,且对人类健康和环境安全几乎无影响,具有广阔的市场前景。
Description
技术领域
本发明属于汽车领域,更具体地说,本发明涉及一种汽车密封条的生产工艺。
背景技术
汽车密封条是汽车的重要零部件之一,广泛用于车门、车窗、车身、座椅、天窗、发动机箱和后备箱等部位,具有防水、密封、隔音、防尘、防冻、减震、保暖及节能的重要作用。它必须具有很强的拉伸强度,良好的弹性,还需要比较好的耐温性和耐老化性。为了保证胶条与型材的紧固,胶条的断面结构尺寸必须与型材匹配。长期以来,车用密封条要求必须具备三大功能:连接性、密封性和装饰性。随着科技的发展和人们环境保护意识的加强,对密封条的要求越来越高,除了优良的密封性与环境隔离功能外,还要求具有舒适性和装饰性,要求其美观、安全及环保等。随着我国经济的高速发展,汽车加快了进入普通家庭的步伐,与此同时,汽车内部空气质量也日益受到大家的关注,车内异味及车内弥漫的甲醛、苯等这些挥发性有机物(VOC)经呼吸进入人体,引起司乘人员病乏、头晕、头痛、颤抖、呼吸困难,甚至恶心、呕吐,严重时可能导致交通事故的发生。德国、美国、日本等国家早先发布法规对其进行控制,我国于2012年3月1日正工发布《乘用车内空气质量评指南》GB/T27630~2011标准。该标准对车内挥发性有机物作出了浓度限制。相应的国内各大汽车主机厂参考国标准对车内气味及挥发性有机物作出严格规定,并在各个零配件公司进行推进。
国内密封条行业生产的产品对其气味及挥发性有机物基本上没有进行控制,其检查数据超出国家法规标准的要求,车箱内异味很严重,对人体影响很大,主机厂在使用过程中如果发现异味重,密封条生产厂家只是用简单在配方中加去味剂或香精、也有进行后续热烘处理来消除异味和有机挥发物,加去味剂或香精会造成产品气怪异、可能会更难闻,后工序热烘处理,虽然取消了低分子量有机挥发物,但有会产品胶料燋胡味,且费工费时,还易造成废品。所以,用上述办法去解决消除气味和降低低分子量有机挥发物不科学,不利于稳定产品质量和规模化生产。
发明内容
本发明所要解决的问题是提供一种汽车密封条的生产工艺。
为了实现上述目的,本发明采取的技术方案为:
一种汽车密封条的生产工艺,包括如下步骤:
(1)密炼
将硬脂酸、PEG~4000、炭黑N550、炭黑N330、补强剂RC15投入密炼机密炼,密炼时间为60s,密炼机转速为40~50r/min;
(2)混炼
将三元乙丙橡胶80~100重量份,过氧化二异丙苯4~8重量份,三烯丙基异氰脲酸酯2~4重量份,聚乙二醇0.7~1.1重量份,重质碳酸钙10~14重量份,石蜡油16~20重量份,氧化钙1~3重量份,促进剂1.3~1.7重量份,阻燃剂1.3~1.7重量份,防焦剂CTP0.05~0.08重量份,硫磺0.2~0.6重量份,放入到密炼机中塑炼2~4min;
(3)开炼、出片
将混炼后的橡胶混合物投入开炼机中,制成胶片,将搅拌厚度调到1~3mm后,降温到70℃后出片;
(4)硫化
将半成品件使用五段微波热风硫化炉进行硫化,前两段是微波加热风形式,后三段为纯热风形式,各段温度为230℃/230℃/240℃/250℃/250℃,硫化时间为8~10min;
(5)烘干
将硫化后的胶料切粒制成料粒,把料粒烘干,烘干温度为50~60℃,烘干时间为10~12min;
(6)挤出成型
将烘干的料粒放入挤出机挤出产品,挤出机的温度是50~70℃,在挤出口模处高压复合成型,口模温度为60~70℃;
(7)成品修剪
将挤出后的密封条放在阴凉处自然晾干、去毛刺、就得到成品。
优选的,所述步骤(1)PEG-4000为0.336重量份、炭黑N550为16.765重量份、量份炭黑N330为2.235重、补强剂RC15为4.4为7重量份、油P500为8.94重量份。
优选的,所述步骤(2)促进剂由下述物质组成:促进剂BZ,促进剂,促进剂TMTD,促进剂TDEC-70,促进剂DTDM-80。
优选的,所述步骤(2)促进剂中各成分的重量份分别为:促进剂BZ:0.15~0.45重量份,促进剂M-75:0.15~0.45重量份,促进剂TMTD:0.15~0.25重量份,促进剂TDEC-70:0.05~0.09重量份,促进剂DTDM-80:0.15~0.45重量份。
优选的,所述步骤(2)阻燃剂由氢氧化镁9~15重量份、硼酸锌4~6重量份、季戊四醇3~8重量份、硅藻土8~12重量份、三聚氰胺20~30重量份、空心微珠4~9重量份,混合制成。
优选的,所述步骤(3)加入偶氮二甲酰胺与N,N-二亚硝基五亚甲基四胺的复合物,以及氧化锌、氧化镁的复合物作为发泡剂和助发泡剂。
优选的,所述步骤(4)硫化处理可以将成型的密封条半成品放在平板硫化机上进行硫化,硫化压力为21~27Mpa,硫化10~20min。
有益效果:本发明涉及一种汽车密封条的生产工艺,与现有技术相比,本发明生产的密封条具有良好弹性和抗压缩变形、耐老化、臭氧、化学作用、较宽的使用温度范围,确保车身各部件之间连续性,避免结合部位产生气流分离,轻松化解周期性尾流,能降低高速行驶风噪,同时增强原车的气密性和防尘能力,工艺简单、配方合理,采用的原材料环保无毒,采用的阻燃剂热稳定性好、阻燃性能持久、无毒抑烟;本发明制备的汽车橡胶密封条具有优异的阻燃、抗老化、耐环境、耐天候性能,且对人类健康和环境安全几乎无影响,具有广阔的市场前景。
具体实施方式
实施例1:
一种汽车密封条的生产工艺,包括如下步骤:
(1)密炼
将0.336重量份的PEG-4000、16.765重量份的炭黑N550、2.235重量份的炭黑N330、4.47重量份的补强剂RC15、8.94重量份的油P500投入密炼机密炼,密炼时间为60s,密炼机转速为40~50r/min;
(2)混炼
将三元乙丙橡胶80重量份,过氧化二异丙苯4重量份,三烯丙基异氰脲酸酯2重量份,聚乙二醇0.7重量份,重质碳酸钙10~14重量份,石蜡油16重量份,氧化钙1重量份,促进剂1.3重量份,阻燃剂1.3重量份,防焦剂CTP0.05重量份,硫磺0.2重量份,放入到密炼机中塑炼2min,所述促进剂由以下成分组成:促进剂BZ:0.15重量份,促进剂M-75:0.15重量份,促进剂TMTD:0.15重量份,促进剂TDEC-70:0.05重量份,促进剂DTDM-80:0.15重量份,所述阻燃剂由氢氧化镁9重量份、硼酸锌4重量份、季戊四醇3重量份、硅藻土8重量份、三聚氰胺20重量份、空心微珠4重量份,混合制成;
(3)开炼、出片
将混炼后的橡胶混合物投入开炼机中,并加入偶氮二甲酰胺与N,N-二亚硝基五亚甲基四胺的复合物,以及氧化锌、氧化镁的复合物作为发泡剂和助发泡剂,制成胶片,将搅拌厚度调到1~3mm后,降温到70℃后出片;
(4)硫化
将半成品件使用五段微波热风硫化炉进行硫化,前两段是微波加热风形式,后三段为纯热风形式,各段温度为230℃/230℃/240℃/250℃/250℃,硫化时间为8min,所述硫化处理可以将成型的密封条半成品放在平板硫化机上进行硫化,硫化压力为21Mpa,硫化10min;
(5)烘干
将硫化后的胶料切粒制成料粒,把料粒烘干,烘干温度为50℃,烘干时间为10min;
(6)挤出成型
将烘干的料粒放入挤出机挤出产品,挤出机的温度是50℃,在挤出口模处高压复合成型,口模温度为60℃;
(7)成品修剪
将挤出后的密封条放在阴凉处自然晾干、去毛刺、就得到成品。
实施例2:
一种汽车密封条的生产工艺,包括如下步骤:
(1)密炼
将0.336重量份的PEG-4000、16.765重量份的炭黑N550、2.235重量份的炭黑N330、4.47重量份的补强剂RC15、8.94重量份的油P500投入密炼机密炼,密炼时间为60s,密炼机转速为40~50r/min;
(2)混炼
将三元乙丙橡胶90重量份,过氧化二异丙苯6重量份,三烯丙基异氰脲酸酯3重量份,聚乙二醇0.9重量份,重质碳酸钙12重量份,石蜡油18重量份,氧化钙2重量份,促进剂1.5重量份,阻燃剂1.5重量份,防焦剂CTP0.065重量份,硫磺0.4重量份,放入到密炼机中塑炼3min,所述促进剂由以下成分组成:促进剂BZ:0.3重量份,促进剂M-75:0.3重量份,促进剂TMTD:0.2重量份,促进剂TDEC-70:0.07重量份,促进剂DTDM-80:0.3重量份,所述阻燃剂由氢氧化镁12重量份、硼酸锌5重量份、季戊四醇5.5重量份、硅藻土10重量份、三聚氰胺25重量份、空心微珠6.6重量份,混合制成;
(3)开炼、出片
将混炼后的橡胶混合物投入开炼机中,并加入偶氮二甲酰胺与N,N-二亚硝基五亚甲基四胺的复合物,以及氧化锌、氧化镁的复合物作为发泡剂和助发泡剂,制成胶片,将搅拌厚度调到2mm后,降温到70℃后出片;
(4)硫化
将半成品件使用五段微波热风硫化炉进行硫化,前两段是微波加热风形式,后三段为纯热风形式,各段温度为230℃/230℃/240℃/250℃/250℃,硫化时间为9min,所述硫化处理可以将成型的密封条半成品放在平板硫化机上进行硫化,硫化压力为24Mpa,硫化15min;
(5)烘干
将硫化后的胶料切粒制成料粒,把料粒烘干,烘干温度为55℃,烘干时间为11min;
(6)挤出成型
将烘干的料粒放入挤出机挤出产品,挤出机的温度是60℃,在挤出口模处高压复合成型,口模温度为65℃;
(7)成品修剪
将挤出后的密封条放在阴凉处自然晾干、去毛刺、就得到成品。
实施例3:
一种汽车密封条的生产工艺,包括如下步骤:
(1)密炼
将0.336重量份的PEG-4000、16.765重量份的炭黑N550、2.235重量份的炭黑N330、4.47重量份的补强剂RC15、8.94重量份的油P500投入密炼机密炼,密炼时间为60s,密炼机转速为50r/min;
(2)混炼
将三元乙丙橡胶100重量份,过氧化二异丙苯8重量份,三烯丙基异氰脲酸酯4重量份,聚乙二醇1.1重量份,重质碳酸钙14重量份,石蜡油20重量份,氧化钙3重量份,促进剂1.7重量份,阻燃剂1.7重量份,防焦剂CTP0.08重量份,硫磺0.6重量份,放入到密炼机中塑炼4min,所述促进剂由以下成分组成:促进剂BZ:0.45重量份,促进剂M-75:0.45重量份,促进剂TMTD:0.25重量份,促进剂TDEC-70:0.09重量份,促进剂DTDM-80:0.45重量份,所述阻燃剂由氢氧化镁15重量份、硼酸锌6重量份、季戊四醇8重量份、硅藻土12重量份、三聚氰胺30重量份、空心微珠9重量份,混合制成;
(3)开炼、出片
将混炼后的橡胶混合物投入开炼机中,并加入偶氮二甲酰胺与N,N-二亚硝基五亚甲基四胺的复合物,以及氧化锌、氧化镁的复合物作为发泡剂和助发泡剂,制成胶片,将搅拌厚度调到3mm后,降温到70℃后出片;
(4)硫化
将半成品件使用五段微波热风硫化炉进行硫化,前两段是微波加热风形式,后三段为纯热风形式,各段温度为230℃/230℃/240℃/250℃/250℃,硫化时间为10min,所述硫化处理可以将成型的密封条半成品放在平板硫化机上进行硫化,硫化压力为27Mpa,硫化20min;
(5)烘干
将硫化后的胶料切粒制成料粒,把料粒烘干,烘干温度为60℃,烘干时间为12min;
(6)挤出成型
将烘干的料粒放入挤出机挤出产品,挤出机的温度是70℃,在挤出口模处高压复合成型,口模温度为70℃;
(7)成品修剪
将挤出后的密封条放在阴凉处自然晾干、去毛刺、就得到成品。
(8)装箱
将经检具检测合格后所得产品在指定位置贴上合格标签,装箱入库。
将已加工好的隔音垫包装入库经过以上工艺后,分别取出样品,测量结果如下:
检测项目 | 实施例1 | 实施例2 | 实施例3 | 现有技术指标 |
抗压缩变形 | 一般 | 高 | 一般 | 一般 |
阻燃性 | 一般 | 好 | 好 | 一般 |
弹性 | 一般 | 好 | 好 | 一般 |
根据上述表格数据可以得出,当实施例2参数时得到的汽车密封条的弹性和抗压缩变形高于现有的汽车密封条,利用该生产工艺生产的汽车密封条阻燃性也好于现有技术水平,即此条件更有利于汽车密封条的制备。
本发明公开了一种汽车密封条的生产工艺,与现有技术相比,本发明生产的密封条具有良好弹性和抗压缩变形、耐老化、臭氧、化学作用、较宽的使用温度范围,确保车身各部件之间连续性,避免结合部位产生气流分离,轻松化解周期性尾流,能降低高速行驶风噪,同时增强原车的气密性和防尘能力,工艺简单、配方合理,采用的原材料环保无毒,采用的阻燃剂热稳定性好、阻燃性能持久、无毒抑烟;本发明制备的汽车橡胶密封条具有优异的阻燃、抗老化、耐环境、耐天候性能,且对人类健康和环境安全几乎无影响,具有广阔的市场前景。
以上所述的仅是本发明的优选实施方式,应当指出,对于本领域的普通技术人员来说,在不脱离本发明创造构思的前提下,还可以做出若干变形和改进,这些都属于本发明的保护范围。
Claims (7)
1.一种汽车密封条的生产工艺,其特征在于:包括如下步骤:
(1)密炼
将硬脂酸、PEG~4000、炭黑N550、炭黑N330、补强剂RC15投入密炼机密炼,密炼时间为60s,密炼机转速为40~50r/min;
(2)混炼
将三元乙丙橡胶80~100重量份,过氧化二异丙苯4~8重量份,三烯丙基异氰脲酸酯2~4重量份,聚乙二醇0.7~1.1重量份,重质碳酸钙10~14重量份,石蜡油16~20重量份,氧化钙1~3重量份,促进剂1.3~1.7重量份,阻燃剂1.3~1.7重量份,防焦剂CTP0.05~0.08重量份,硫磺0.2~0.6重量份,放入到密炼机中塑炼2~4min;
(3)开炼、出片
将混炼后的橡胶混合物投入开炼机中,制成胶片,将搅拌厚度调到1~3mm后,降温到70℃后出片;
(4)硫化
将半成品件使用五段微波热风硫化炉进行硫化,前两段是微波加热风形式,后三段为纯热风形式,各段温度为230℃/230℃/240℃/250℃/250℃,硫化时间为8~10min;
(5)烘干
将硫化后的胶料切粒制成料粒,把料粒烘干,烘干温度为50~60℃,烘干时间为10~12min;
(6)挤出成型
将烘干的料粒放入挤出机挤出产品,挤出机的温度是50~70℃,在挤出口模处高压复合成型,口模温度为60~70℃;
(7)成品修剪
将挤出后的密封条放在阴凉处自然晾干、去毛刺、就得到成品。
2.按照权利要求1所述的一种汽车密封条的生产工艺,其特征在于:所述步骤(1)PEG-4000为0.336重量份、炭黑N550为16.765重量份、量份炭黑N330为2.235重、补强剂RC15为4.4为7重量份、油P500为8.94重量份。
3.按照权利要求1所述的一种汽车密封条的生产工艺,其特征在于:所述步骤(2)促进剂由下述物质组成:促进剂BZ,促进剂,促进剂TMTD,促进剂TDEC-70,促进剂DTDM-80。
4.按照权利要求3所述的一种汽车密封条的生产工艺,其特征在于:所述步骤(2)促进剂中各成分的重量份分别为:促进剂BZ:0.15~0.45重量份,促进剂M-75:0.15~0.45重量份,促进剂TMTD:0.15~0.25重量份,促进剂TDEC-70:0.05~0.09重量份,促进剂DTDM-80:0.15~0.45重量份。
5.按照权利要求1所述的一种汽车密封条的生产工艺,其特征在于:所述步骤(2)阻燃剂由氢氧化镁9~15重量份、硼酸锌4~6重量份、季戊四醇3~8重量份、硅藻土8~12重量份、三聚氰胺20~30重量份、空心微珠4~9重量份,混合制成。
6.按照权利要求1所述的一种汽车密封条的生产工艺,其特征在于:所述步骤(3)加入偶氮二甲酰胺与N,N-二亚硝基五亚甲基四胺的复合物,以及氧化锌、氧化镁的复合物作为发泡剂和助发泡剂。
7.按照权利要求1所述的一种汽车密封条的生产工艺,其特征在于:所述步骤(4)硫化处理可以将成型的密封条半成品放在平板硫化机上进行硫化,硫化压力为21~27Mpa,硫化10~20min。
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Application publication date: 20170922 |