CN106498380A - 一种常温耐腐蚀磷化液及其制备方法 - Google Patents
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Abstract
本发明公开了一种常温耐腐蚀磷化液及其制备方法,由以下重量份的原料制得:去离子水35‑56份、二水合钼酸钠6‑8份、铬酸2‑7份、硫酸羟胺5‑8份、甲基丙烯酸甲酯4‑8份、氟硼酸钠4‑5份、酒石酸4‑9份、柠檬酸22‑24份、环己六醇六磷酸脂2‑6份、铜酸铵1‑8份、间硝基苯2‑6份、硅酸钠3‑6份、马日夫盐6‑10份。与现有磷化液及磷化工艺相比,采用本发明的常温耐腐蚀磷化液对工件进行磷化处理会简化了磷化工艺,提高了磷化效率,降低了磷化成本;同时采用本发明的常温耐腐蚀磷化液形成的磷化膜不仅更致密、更均匀,能有效地防止工件锈蚀,且制备方法简单,成本低。
Description
技术领域
本发明涉及一种常温耐腐蚀磷化液及其制备方法。
背景技术
为了提高钢铁件表面防锈能力,通常对其表面进行磷化处理。磷化膜主要用做涂料涂装的底层,金属冷加工的润滑层,以及金属表面保护层等,可以起到防锈、减磨耐磨、润滑、增进涂料与金属基底附着力等多种作用。对钢铁件的磷化工艺多为中高温磷化,处理前需经过除油除锈预处理,且温度高,能耗高,磷化时间长,工序繁杂。磷化是一种化学与电化学反应形成磷酸盐化学转化膜的过程,所形成的磷酸盐转化膜称之为磷化膜。磷化的目的主要是:给基体金属提供保护,在一定程度上防止金属被腐蚀;用于涂漆前打底,提高漆膜层的附着力与防腐蚀能力;在金属冷加工工艺中起减摩润滑作用。磷化过程包括化学与电化学反应。不同磷化体系、不同基材的磷化反应机理比较复杂。虽然科学家在这方面已做过大量的研究,但至今未完全弄清楚。二战结束以后,磷化技术很少有突破性进展,只是稳步的发展和完善。磷化广泛应用于防蚀技术,金属冷变形加工工业。当前,磷化技术领域的研究方向主要是围绕提高质量、减少环境污染、节省能源进行。当金属工件一旦浸入加热的稀磷酸溶液中,就会生成一层膜。而影响磷化液性能的至少有PH值、游离酸度、总酸度、磷化温度、磷化时间、促进剂、除锈、除油、表调效果和金属性质等。工件在磷化前必须进行除油脂、锈蚀物、氧化皮以及表面调整等预处理。特别是涂漆前打底用磷化还要求作表面调整,使金属表面具备一定的“活性”,并形成错落有致的晶孢基底,才能获得均匀、细致、密实的磷化膜,达到提高漆膜附着力和耐腐蚀性的要求。因此,磷化前处理是获得高质量磷化膜的基础。目前,国内外磷化处理使用较多的是低温、中温、高温磷化,不仅能耗大、处理工艺时间长和沉渣多,而且磷化前需除油除锈,磷化后需进行封闭处理,使磷化处理工艺复杂化,增加磷化成本,不利于现在化生产。因此为了适应快速发展的市场竞争需要,提高磷化液的质量,实现常温快速形成磷化膜,降低能耗成本,工艺过程简单化、功能化等成为当前的发展趋势。但是现在市面上的磷化剂,其工件经过磷化处理后,磷化膜较薄,为2-4μm,耐蚀性差,并且容易挂灰,不能满足工件耐蚀性的要求。为此,我们从产品的配方和工艺着手,提供一种常温耐腐蚀磷化液及其制备方法。
发明内容
本发明的目的在于提供一种常温耐腐蚀磷化液及其制备方法。
为了实现上述目的,本发明提供了一种常温耐腐蚀磷化液,由以下重量份的原料制得:去离子水35-56份、二水合钼酸钠6-8份、铬酸2-7份、硫酸羟胺5-8份、甲基丙烯酸甲酯4-8份、氟硼酸钠4-5份、酒石酸4-9份、柠檬酸22-24份、环己六醇六磷酸脂2-6份、铜酸铵1-8份、间硝基苯2-6份、硅酸钠3-6份、马日夫盐6-10份。
其还含有硝酸胍2-6份。
其还含有氧化锌2-7份。
其还含有对苯二酚5-11份。
一种常温耐腐蚀磷化液的制备方法,包括以下步骤:按照上述重量份比称取各组分,然后混合搅拌,搅拌均匀使各组分完全溶解,得到所述常温耐腐蚀磷化液。
本发明具有以下有益效果:与现有磷化液及磷化工艺相比,采用本发明的常温耐腐蚀磷化液对工件进行磷化处理会简化了磷化工艺,提高了磷化效率,降低了磷化成本;同时采用本发明的常温耐腐蚀磷化液形成的磷化膜不仅更致密、更均匀,能有效地防止工件锈蚀,且制备方法简单,成本低。
具体实施方式
实施例1
本实施例的常温耐腐蚀磷化液,由以下重量份的组份制得:去离子水35份、二水合钼酸钠6份、铬酸2份、硫酸羟胺5份、甲基丙烯酸甲酯4份、氟硼酸钠4份、酒石酸4份、柠檬酸22份、环己六醇六磷酸脂2份、铜酸铵1份、间硝基苯2份、硅酸钠3份、马日夫盐6份。
按照上述重量份比称取各组分,然后混合搅拌,搅拌均匀使各组分完全溶解,得到所述常温耐腐蚀磷化液。
本发明可以采用直接浸泡、喷涂的方法对金属工件表面进行处理,然后自然晾干得到磷化膜。
实施例2
本实施例的常温耐腐蚀磷化液,由以下重量份的组份制得:去离子水56份、二水合钼酸钠8份、铬酸7份、硫酸羟胺8份、甲基丙烯酸甲酯8份、氟硼酸钠5份、酒石酸9份、柠檬酸24份、环己六醇六磷酸脂6份、铜酸铵8份、间硝基苯6份、硅酸钠6份、马日夫盐10份、硝酸胍6份。
按照上述重量份比称取各组分,然后混合搅拌,搅拌均匀使各组分完全溶解,得到所述常温耐腐蚀磷化液。
本发明可以采用直接浸泡、喷涂的方法对金属工件表面进行处理,然后自然晾干得到磷化膜。
实施例3
本实施例的常温耐腐蚀磷化液,由以下重量份的组份制得:去离子水35份、二水合钼酸钠6份、铬酸2份、硫酸羟胺5份、甲基丙烯酸甲酯4份、氟硼酸钠4份、酒石酸4份、柠檬酸22份、环己六醇六磷酸脂2份、铜酸铵1份、间硝基苯2份、硅酸钠3份、马日夫盐6份、硝酸胍2份、氧化锌2份。
按照上述重量份比称取各组分,然后混合搅拌,搅拌均匀使各组分完全溶解,得到所述常温耐腐蚀磷化液。
本发明可以采用直接浸泡、喷涂的方法对金属工件表面进行处理,然后自然晾干得到磷化膜。
实施例4
本实施例的常温耐腐蚀磷化液,由以下重量份的组份制得:去离子水56份、二水合钼酸钠8份、铬酸7份、硫酸羟胺8份、甲基丙烯酸甲酯8份、氟硼酸钠5份、酒石酸9份、柠檬酸24份、环己六醇六磷酸脂6份、铜酸铵8份、间硝基苯6份、硅酸钠6份、马日夫盐10份、硝酸胍6份、氧化锌7份、对苯二酚11份。
按照上述重量份比称取各组分,然后混合搅拌,搅拌均匀使各组分完全溶解,得到所述常温耐腐蚀磷化液。
本发明可以采用直接浸泡、喷涂的方法对金属工件表面进行处理,然后自然晾干得到磷化膜。
实施例5
通过实施例1-4制得磷化液对工件表面磷化处理,测试工件表面的磷化膜的性能。得到的测试结果为:本实施工艺简单,将磷化处理后的钢板工件,漆膜附着力试验达到1级,耐冲击试验无漆膜脱落,经1000h中性盐雾试验后,漆膜划叉处锈蚀宽度小于1cm,工件表面形成的磷化膜结晶致密,磷化表面无挂灰、反白现象产生,膜层本身无脆性,各项指标均能达到国家标准。
以上所述仅是本发明的优选方式,应当指出,对于本领域普通技术人员来说,在不脱离本发明创造构思的前提下,还可以做出若干相似的变形和改进,这些也应视为本发明的保护范围之内。
Claims (5)
1.一种常温耐腐蚀磷化液,其特征在于由以下重量份的原料制得:去离子水35-56份、二水合钼酸钠6-8份、铬酸2-7份、硫酸羟胺5-8份、甲基丙烯酸甲酯4-8份、氟硼酸钠4-5份、酒石酸4-9份、柠檬酸22-24份、环己六醇六磷酸脂2-6份、铜酸铵1-8份、间硝基苯2-6份、硅酸钠3-6份、马日夫盐6-10份。
2.根据权利要求 1 所述的常温耐腐蚀磷化液,其特征在于:其还含有硝酸胍2-6份。
3.根据权利要求 1 所述的常温耐腐蚀磷化液,其特征在于:其还含有氧化锌2-7份。
4.根据权利要求 1 所述的常温耐腐蚀磷化液,其特征在于:其还含有对苯二酚5-11份。
5.根据权利要求 1 -4中任一项所述的一种常温耐腐蚀磷化液的制备方法,其特征在于包括以下步骤:按照上述重量份比称取各组分,然后混合搅拌,搅拌均匀使各组分完全溶解,得到所述常温耐腐蚀磷化液。
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CN109280912A (zh) * | 2018-10-24 | 2019-01-29 | 江苏理工学院 | 一种铝合金表面处理用磷化液及磷化方法 |
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CN109280912A (zh) * | 2018-10-24 | 2019-01-29 | 江苏理工学院 | 一种铝合金表面处理用磷化液及磷化方法 |
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