CN111117427A - 一种应用于汽车零部件的耐热保护涂层及涂敷方法 - Google Patents

一种应用于汽车零部件的耐热保护涂层及涂敷方法 Download PDF

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CN111117427A
CN111117427A CN201911406367.2A CN201911406367A CN111117427A CN 111117427 A CN111117427 A CN 111117427A CN 201911406367 A CN201911406367 A CN 201911406367A CN 111117427 A CN111117427 A CN 111117427A
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周胜蓝
张靖
牛治宇
王清国
徐成林
乔小兵
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FAW Jiefang Automotive Co Ltd
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Abstract

本发明涉及一种应用于汽车零部件的耐热保护涂层及涂敷方法，所述耐热保护涂层由以下原料组成，纳米陶瓷微珠，耐热树脂聚合物，树脂粘结剂和稀释溶剂；耐热保护涂层的涂敷方法，包括前处理：工件脱脂清洗3分钟；用压缩空气清理表面，并吹干；喷涂耐热保护涂层；湿漆膜晾干5分钟后一定温度下保温固化一段时间；室温放置72小时后检测涂层厚度为15～30μm。该保护涂层的厚度在15～30μm之间，该工艺提高了耐热涂层在金属表面的粘结强度，具有优良的耐热及耐腐蚀性能。

Description

一种应用于汽车零部件的耐热保护涂层及涂敷方法
技术领域
本发明涉及一种应用于汽车零件的耐热保护涂层及其涂敷方法。
背景技术
众所周知，商用车零件防护涂层的耐热及耐腐蚀要求高而且使用条件苛刻，使用周期较长，目前一般的涂装防护作用及保护周期不理想，达不到产品使用要求。为了提高国产商用车零件的涂层耐热防护的质量水平，消除已存在的质量问题，缩小同进口车耐热部件的质量差距，较好的开展车辆耐热部件的涂敷保护工作。
传统的车辆耐热部件的涂装工艺一般为：脱脂－干燥－涂装有机硅耐热涂料－干燥。喷涂一般的耐热涂料或涂装传统的防锈涂层，耐热试验后耐腐蚀性能差(盐雾试验不到100h)；导致汽车耐热部件使用后局部锈蚀引起疲劳断裂现象严重。根据有关国际标准要求，汽车有关部件的耐热后抗腐蚀性能要求很高，因此对该系统的耐热后抗腐蚀性能也提出了更高的要求，300℃耐热试验后二次盐雾试验应达到504小时以上。
发明内容
本发明的目的就在于针对上述现有技术的不足，提供一种应用于汽车耐热零件的保护涂层及工艺，提高保护涂层在金属表面的粘结强度60％以上，具有优良的耐热及耐腐蚀作用。
本发明的目的是通过以下技术方案实现的：
一种应用于汽车零部件的耐热保护涂层，所述耐热保护涂层按重量份数由以下原料组成，纳米陶瓷微珠1份，耐热树脂聚合物29份，树脂粘结剂40份，稀释溶剂30份。
进一步地，所述稀释溶剂为二甲苯和丙酮，二甲苯：丙酮的重量比为1:1。
进一步地，所述树脂粘结剂包括环氧树脂或改性有机硅树脂粘结剂。
上述应用于汽车零部件的耐热保护涂层的涂敷方法，包括以下步骤：
A、前处理：工件脱脂清洗3分钟；
B、用压缩空气清理表面，并吹干；
C、喷涂耐热保护涂层；
D、湿漆膜晾干5分钟后一定温度下保温固化一段时间；
F、室温放置72小时后检测涂层厚度为15～30μm。
进一步地，步骤C，所述固化温度为60℃，保温固化时间为20分钟。
与现有技术相比，本发明的有益效果在于：本发明应用于汽车零部件的耐热保护涂层及涂敷方法，提高耐热保护涂层在金属表面的粘结强度，具有优良的耐热及耐腐蚀性能。
具体实施方式
本发明应用于汽车零部件的耐热保护涂层，所述耐热保护涂层按重量份数由以下原料组成，纳米陶瓷微珠1份，耐热树脂聚合物29份，树脂粘结剂40份，稀释溶剂30份。
所述稀释溶剂为二甲苯和丙酮，二甲苯：丙酮＝1:1(重量比)。
所述树脂粘结剂包括环氧树脂或改性有机硅树脂粘结剂。
上述应用于汽车零部件的耐热保护涂层的涂敷方法，包括以下步骤：
A、前处理：工件脱脂清洗3分钟；
B、用压缩空气清理表面，并吹干；
C、喷涂耐热保护涂层；
D、湿漆膜晾干5分钟后一定温度下保温固化一段时间；
F、室温放置72小时后检测涂层厚度为15～30μm。
步骤C，所述固化温度为60℃，保温固化时间为20分钟。
实施例1
实验室进行工艺试制时，采用精密耐热涂层防护工艺制作六块样板。其中前处理均为脱脂清洗工艺，然后用压缩空气清理表面，接着喷涂特种涂料室温放置16小时后检测涂层厚度为15～30μm之间。进行耐热腐蚀试验，三块样板500℃保持1小时后，适应环境30分钟后，进行504小时盐雾试验，涂层无明显变色、剥落、附着力良好、抗石击性能良好。涂层耐溶剂等各种工艺介质；与基体配套性良好；涂层漆膜平整光滑，具有较高的防腐及耐热性能。
实施例2
对标定载重为4吨的汽车耐热部件按本发明涂敷耐热防护涂层；而对没有采用按本发明的零部件按常规涂装一般耐热涂料，按本发明所述脱脂清洗3分钟，压缩空气吹干，清理表面后喷涂耐热保护涂层，湿漆膜晾干5分钟后60℃、20分烘干。室温放置72小时后检测涂层厚度为18～22μm之间。
把按上述经过特种保护涂层处理的汽车零部件同传统涂层处理的部件，同时装于两辆商用车上，同时进行道路试验。2.5万km的里程后检查两辆商用车涂层的防护，结果发现：经过耐热保护涂层的部件无明显变色、剥落、锈蚀的情况发生；相反，经过传统保护涂层处理的零件明显变色、局部剥落、产生锈蚀斑的情况已经发生。
以上证明特种耐热防护涂层的涂装对满足现代商用车零部件耐热防护性能的重要性。

Claims (5)

1.一种应用于汽车零部件的耐热保护涂层，其特征在于：所述耐热保护涂层按重量份数由以下原料组成，纳米陶瓷微珠1份，耐热树脂聚合物29份，树脂粘结剂40份，稀释溶剂30份。
2.根据权利要求1所述的一种应用于汽车零部件的耐热保护涂层，其特征在于：所述稀释溶剂为二甲苯和丙酮，二甲苯：丙酮的重量比为1:1。
3.根据权利要求1所述的一种应用于汽车零部件的耐热保护涂层，其特征在于：所述树脂粘结剂包括环氧树脂或改性有机硅树脂粘结剂。
4.根据权利要求1所述的一种应用于汽车零部件的耐热保护涂层的涂敷方法，其特征在于，包括以下步骤：
A、前处理：工件脱脂清洗3分钟；
B、用压缩空气清理表面，并吹干；
C、喷涂耐热保护涂层；
D、湿漆膜晾干5分钟后一定温度下保温固化一段时间；
F、室温放置72小时后检测涂层厚度为15～30μm。
5.根据权利要求4所述的一种应用于汽车零部件的耐热保护涂层的涂敷方法，其特征在于：步骤C，所述固化温度为60℃，保温固化时间为20分钟。
CN201911406367.2A 2019-12-31 2019-12-31 一种应用于汽车零部件的耐热保护涂层及涂敷方法 Pending CN111117427A (zh)

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Citations (4)

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Publication number Priority date Publication date Assignee Title
CN102911599A (zh) * 2012-10-26 2013-02-06 中国第一汽车股份有限公司 一种应用于越野车刹车盘类零件的耐热保护涂层
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CN102911599A (zh) * 2012-10-26 2013-02-06 中国第一汽车股份有限公司 一种应用于越野车刹车盘类零件的耐热保护涂层
CN102925056A (zh) * 2012-10-26 2013-02-13 中国第一汽车股份有限公司 一种应用于越野车排气系统的迷彩涂敷工艺
CN103709901A (zh) * 2013-12-26 2014-04-09 严易舒 一种纳米无溶剂环氧防锈漆及其制备方法
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