CN106010088A - 锌钢护栏及其制作方法 - Google Patents
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Abstract
本发明公开了一种锌钢护栏,属于市政建设的防护栏领域。锌钢防护栏表面的由内至外依次涂覆热镀锌层、铬酸盐氧化层、环氧树脂粉末涂层和氟碳层。采用四层的复合涂层,增强隔绝氧气性能,提高了传统的锌钢防护栏的防腐作用;在脱脂的碱液中引入Co元素,可以在原始钢材的基础上覆有一层无定型的薄膜,进一步加强防蚀性能;运用静电喷涂的方式,增强了氟碳层对基材的附着能力,延长了防护栏的使用寿命。本发明还公开了上述的锌钢防护栏的制备方法。
Description
技术领域
本发明涉及一种护栏及其制作方法,具体讲是一种锌钢护栏及其制作方法,属于市政建设的防护栏领域。
背景技术
防护栏的作用在于维持良好的交通秩序,保障行车的安全。防护栏大多是不锈钢或者是铁质的防护栏,或者是后期为了美观、或者是增强防护栏的抗氧化性,在防护栏的表面涂布面漆制作而成。但是,这些在长时间的暴晒或者雨水的冲刷下,由于表面的抗氧化层的抗氧化能力不够,有些防护栏在局部生锈后,氧化层受到破坏,氧原子就不断渗入继续锈化。因此,我们就经常看到,道路间的防护栏大多有锈迹斑斑的迹象,但是有没有完全锈蚀,这对于城市的美化来说是极其不利的,如果说将所有的防护栏全部更新,这对于市政的支出是相当庞大的,如若放置不管,又有损城市形象。
发明内容
本发明所要解决的技术问题在于克服现有技术缺陷,提供一种耐腐蚀性能强,防生锈效果好的锌钢防护栏及制作方法。
为了解决上述技术问题,本发明提供的一种锌钢防护栏,所述锌钢防护栏表面的由内至外依次涂覆热镀锌层、铬酸盐氧化层、环氧树脂粉末涂层和氟碳层。
本发明还提供了上述的锌钢防护栏的制备方法,包括以下步骤:
1)、在护栏基材的表面形成热镀锌层后,进行化学预处理并形成铬酸盐氧化层;
2)、在步骤1)处理过的护栏基材表面喷涂环氧树脂粉末涂层;
3)、在步骤2)处理过的护栏基材表面喷涂氟碳形成氟碳层。
本发明中,所述步骤2)具体过程中:采用静电喷涂的方式将环氧粉末喷涂在钢材表面,然后在180℃-220℃下,固化10-15min。
本发明的有益效果在于:(1)、采用四层的复合涂层,增强隔绝氧气性能,提高了传统的锌钢防护栏的防腐作用;(2)、在脱脂的碱液中引入Co元素,可以在原始钢材的基础上覆有一层无定型的薄膜,进一步加强防蚀性能;(3)、运用静电喷涂的方式,增强了氟碳层对基材的附着能力,延长了防护栏的使用寿命。
具体实施方式
下面结合具体的实施例对本发明的技术方案做进一步的阐述。
实施例
1
1、将护栏基材除锈后的钢材置于500℃的熔融锌液中,浸入锌液中时间50秒之间,在钢材的表面形成镀锌层,镀锌层表面可以起到电化学的保护作用,形成第一道防腐层;
2、使用含有Co的碱性溶液对镀锌后的护栏基材,进行表面清洗,去除基材表面的机油、粉末,并形成无定型的金属氧化物层;
3、将步骤2处理后的护栏基材置于铬酸盐、磷酸盐以及树脂乳液的混合体系中形成铬酸盐氧化层,其中铬酸盐、磷酸盐、树脂乳液浓度分别为7g/L,2.5g/L,3 g/L。处理时,需要严格控制处理时间,钝化时间为10分钟,通过铬酸阳极氧化,提高耐腐蚀性能。
4、采用静电喷涂的方式将环氧粉末喷涂在经过步骤3处理的护栏基材表面,涂料中微粒在高静电电场的条件下很好的附着在钢材表面,增加涂层的附着力;然后,在温度为180℃下,固化15min,使环氧粉末融化后再固化形成环氧树脂粉末涂层。
5、在经过步骤4处理的护栏基材表面,同样采用静电喷涂的方式喷涂氟碳,自然晾干后,在防护栏表面形成氟碳层。
实施例
2
1、将护栏基材除锈后的钢材置于490℃的熔融锌液中,浸入锌液中时间55秒之间,在钢材的表面形成镀锌层,镀锌层表面可以起到电化学的保护作用,形成第一道防腐层;
2、使用含有Ni的碱性溶液对镀锌后的护栏基材,进行表面清洗,去除基材表面的机油、粉末,并形成无定型的金属氧化物层;
3、将步骤2处理后的护栏基材置于铬酸盐、磷酸盐以及树脂乳液的混合体系中形成铬酸盐氧化层,其中铬酸盐、磷酸盐、树脂乳液浓度分别为7g/L,2.5g/L,3 g/L。处理时,需要严格控制处理时间,钝化时间为15分钟。处理时,需要严格控制处理时间,通过铬酸阳极氧化,提高耐腐蚀性能。
4、采用静电喷涂的方式将环氧粉末喷涂在经过步骤3处理的护栏基材表面,涂料中微粒在高静电电场的条件下很好的附着在钢材表面,增加涂层的附着力;然后,在温度为220℃下,固化10min,使环氧粉末融化后再固化形成环氧树脂粉末涂层。
5、在经过步骤4处理的护栏基材表面,同样采用静电喷涂的方式喷涂氟碳,自然晾干后,在防护栏表面形成氟碳层。
实施例
3
1、将护栏基材除锈后的钢材置于507℃的熔融锌液中,浸入锌液中时间58秒之间,在钢材的表面形成镀锌层,镀锌层表面可以起到电化学的保护作用,形成第一道防腐层;
2、使用含有Co 的碱性溶液对镀锌后的护栏基材,进行表面清洗,去除基材表面的机油、粉末,并形成无定型的金属氧化物层;
3、将步骤2处理后的护栏基材置于铬酸盐、磷酸盐以及树脂乳液的混合体系中形成铬酸盐氧化层,其中铬酸盐、磷酸盐、树脂乳液浓度分别为7g/L,1.5g/L,2g/L。处理时,需要严格控制处理时间,钝化时间为10分钟。处理时,需要严格控制处理时间,通过铬酸阳极氧化,提高耐腐蚀性能。
4、采用静电喷涂的方式将环氧粉末喷涂在经过步骤3处理的护栏基材表面,涂料中微粒在高静电电场的条件下很好的附着在钢材表面,增加涂层的附着力;然后,在温度为198℃下,固化13min,使环氧粉末融化后再固化形成环氧树脂粉末涂层。
5、在经过步骤4处理的护栏基材表面,同样采用静电喷涂的方式喷涂氟碳,自然晾干后,在防护栏表面形成氟碳层。
以上对本发明实施例所提供的技术方案进行了详细介绍,本文中应用了具体个例对本发明实施例的原理以及实施方式进行了阐述,以上实施例的说明只适用于帮助理解本发明实施例的原理;同时,对于本领域的一般技术人员,依据本发明实施例,在具体实施方式以及应用范围上均会有改变之处,综上所述,本说明书内容不应理解为对本发明的限制。
Claims (3)
1.一种锌钢防护栏,其特征在于:所述锌钢防护栏表面的由内至外依次涂覆热镀锌层、铬酸盐氧化层、环氧树脂粉末涂层和氟碳层。
2.权利要求1所述的锌钢防护栏的制备方法,其特征在于包括以下步骤:
1)、在护栏基材的表面形成热镀锌层后,进行化学预处理并形成铬酸盐氧化层;
2)、在步骤1)处理过的护栏基材表面喷涂环氧树脂粉末涂层;
3)、在步骤2)处理过的护栏基材表面喷涂氟碳形成氟碳层。
3.根据权利要求2所述锌钢防护栏的制备方法,其特征在于所述步骤2)具体过程中:采用静电喷涂的方式将环氧粉末喷涂在钢材表面,然后在180℃-220℃下,固化10-15min。
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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CN108325802A (zh) * | 2017-01-19 | 2018-07-27 | 毅铭兴源新钢科技(北京)有限公司 | 一种锌钢栏杆、铁轨压簧石墨烯表面防腐技术 |
CN113293375A (zh) * | 2021-05-08 | 2021-08-24 | 佛山市巨邦护栏有限公司 | 抗腐蚀能力佳的护栏的制备方法 |
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Cited By (2)
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CN108325802A (zh) * | 2017-01-19 | 2018-07-27 | 毅铭兴源新钢科技(北京)有限公司 | 一种锌钢栏杆、铁轨压簧石墨烯表面防腐技术 |
CN113293375A (zh) * | 2021-05-08 | 2021-08-24 | 佛山市巨邦护栏有限公司 | 抗腐蚀能力佳的护栏的制备方法 |
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