CN111171617A - 一种水性防锈不粘涂层及其涂覆方法 - Google Patents

一种水性防锈不粘涂层及其涂覆方法 Download PDF

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CN111171617A
CN111171617A CN201910747489.1A CN201910747489A CN111171617A CN 111171617 A CN111171617 A CN 111171617A CN 201910747489 A CN201910747489 A CN 201910747489A CN 111171617 A CN111171617 A CN 111171617A
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关建安
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Jinhua Queenhome New Material Technology Co ltd
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Abstract

本发明公开了一种水性防锈不粘涂层及其涂覆方法，水性防锈不粘涂层依次包括防锈纳米隔离层、不粘底涂层和不粘面涂层，防锈纳米隔离层包含的原料及其质量百分比为：纳米耐温树酯12‑30%，耐高温颜料1‑12%，防锈填料0‑12%，助剂0.5‑5%，醇类溶剂10‑25%，余量为水；不粘底涂层包含的原料及其质量百分比为：耐高温粘结剂12‑20%，氟树脂15‑24%，耐高温颜料1‑12%，耐高温填料1.5‑10%，助剂0.5‑5%，助溶剂12‑18%，余量为水；不粘面涂层包含的原料及其质量百分比为：氟树脂33‑42%，耐高温颜料0‑5%，丙烯酸树酯3‑12%，助剂0.5‑5%，余量为水。涂覆步骤包括基材处理和上述三层涂层的依次涂覆。本发明的水性防锈不粘涂层，克服了铁质不粘锅容易生锈的问题，同时具有很好的耐高温性和持久不粘性。

Description

一种水性防锈不粘涂层及其涂覆方法
技术领域
本发明涉及化工涂料领域，特别涉及一种水性防锈不粘涂层及其涂覆方法。
背景技术
水性不粘涂层是一种氟树脂涂层，在上世纪50年代被发明和应用在不粘锅上，具有很好的耐高温性、不粘性和防腐蚀性。不粘锅当时主要是在欧美国家生产，后来90年代随着中国经济的开放和发展，逐步在国内被广泛应用开来。水性不粘涂层多应用于铝制品基材之上，近年来，在中国，铁质不粘锅应用越来越多，铁质不粘锅具有成本低、加热快等优点，但是有一个通用的问题，就是铁质不粘锅容易生锈，影响产品质量和寿命。我们常用的铁质不粘锅，一般喷涂的是油性有机硅涂层，虽然防锈能力还不错，但是该涂层耐温性差，不粘性不持久，而且VOC排放很高，影响使用效果，实用安全性不高。
发明内容
本发明要解决的技术问题是提供一种水性防锈不粘涂层及其涂覆方法，解决现有技术中存在的油性有机硅涂层耐温性差，不粘性不持久，VOC排放很高的问题。
为了解决上述技术问题，本发明通过以下技术方案实现：
一种水性防锈不粘涂层，其特征在于：依次包括防锈纳米隔离层、不粘底涂层和不粘面涂层，所述防锈纳米隔离层包含的原料及其质量百分比为：纳米耐温树酯12-30%，耐高温颜料1-12%，防锈填料0-12%，助剂0.5-5%，醇类溶剂10-25%，余量为水；所述不粘底涂层包含的原料及其质量百分比为：耐高温粘结剂12-20%，氟树脂15-24%，耐高温颜料1-12%，耐高温填料1.5-10%，助剂0.5-5%，助溶剂12-18%，余量为水；所述不粘面涂层包含的原料及其质量百分比为：氟树脂33-42%，耐高温颜料0-5%，丙烯酸树酯3-12%，助剂0.5-5%，余量为水。
作为优选，上述所述纳米耐温树酯为水性有机无机杂化树脂。
作为优选，上述所述耐高温粘结剂为聚醚砜或聚醚醚酮或聚苯硫醚或聚酰胺-酰亚胺或聚酰亚胺中的一种或两种以上的组合。
作为优选，上述所述氟树脂为聚四氟乙烯树酯或全氟乙烯丙烯共聚物或全氟烷氧基乙烯基醚共聚物中的一种或两种以上的组合。
作为优选，上述所述耐高温颜料为无机颜料或有机颜料，耐温温度为大于200℃。
作为优选，上述所述耐高温填料为粉末状的晶须类或纤维类或陶瓷颗粒类无机材料，且粒径小于100μm。
作为优选，上述所述防锈填料为三聚磷酸铝。
作为优选，上述所述醇类溶剂为异丙醇或丙二醇或乙二醇甲醚；所述助溶剂为N-N二甲基吡咯烷酮或醇类溶剂或醇醚类溶剂或胺类溶剂中的一种或两种以上的组合。
作为优选，上述所述助剂为分散剂或表面活性剂或润湿剂或消泡剂或成膜助剂或催化剂中的一种或两种以上的组合。
一种水性防锈不粘涂层的涂覆方法，具体涂覆步骤为：
（1）基材处理：首先对待涂覆的铁质基材进行磷化处理，然后用30-60目的金刚砂喷砂形成粗造面；
（2）涂层喷涂：完成步骤（1）的喷砂步骤后，在12小时内喷涂防锈纳米隔离层涂料，烘干，温度为40-60℃，烘干时间为5-10min；然后喷涂不粘底涂层涂料，烘干，温度为80-160℃，烘干时间为5-10min；最后喷涂不粘面涂层涂料，并在380-420℃，5-10min内烧结形成不粘涂膜，即在铁质基材上形成了水性防锈不粘涂层。
本发明的有益效果是：
（1）本发明的水性防锈不粘涂层，对防锈纳米隔离层、不粘底涂层和不粘面涂层进行依次涂覆的结合，克服了铁质不粘锅容易生锈的问题；
（2）纳米耐温树酯形成涂膜后具有较高耐温性、硬度和涂膜致密性，能够很好地粘结基材和隔离酸碱盐等物质对铁质基材的腐蚀，从而提高产品的耐高温性和持久不粘性。
（3）本发明的涂覆方法，步骤简单，便于操作。
具体实施方式
下面对本发明的具体实施方式作进一步说明。在此需要说明的是，对于这些实施方式的说明用于帮助理解本发明，但并不构成对本发明的限定。此外，下面所描述的本发明各个实施方式中所涉及的技术特征只要彼此之间未构成冲突就可以相互组合。
实施例1
一种水性防锈不粘涂层及其涂覆方法，水性防锈不粘涂层依次包括防锈纳米隔离层、不粘底涂层和不粘面涂层，防锈纳米隔离层包含的原料及其质量百分比为：纳米耐温树酯12%，耐高温颜料8%，防锈填料4%，助剂0.5%，醇类溶剂15%，水为60.5%；不粘底涂层包含的原料及其质量百分比为：耐高温粘结剂12%，氟树脂20%，耐高温颜料6%，耐高温填料1.5%，助剂0.5%，助溶剂12%，水为48%；不粘面涂层包含的原料及其质量百分比为：氟树脂33%，耐高温颜料2%，丙烯酸树酯3%，助剂2%，水为60%。
水性防锈不粘涂层的涂覆方法，具体涂覆步骤为：
（1）基材处理：首先对待涂覆的铁质基材进行磷化处理，然后用30-60目的金刚砂喷砂形成粗造面；
（2）涂层喷涂：完成步骤（1）的喷砂步骤后，在12小时内喷涂防锈纳米隔离层涂料，烘干，温度为40-60℃，烘干时间为5-10min；然后喷涂不粘底涂层涂料，烘干，温度为80-160℃，烘干时间为5-10min；最后喷涂不粘面涂层涂料，并在380-420℃，5-10min内烧结形成不粘涂膜，即在铁质基材上形成了水性防锈不粘涂层。
实施例2
同实施例1的涂覆步骤，其中防锈纳米隔离层包含的原料及其质量百分比为：纳米耐温树酯20%，耐高温颜料12%，助剂5%，醇类溶剂10%，水为53%；不粘底涂层包含的原料及其质量百分比为：耐高温粘结剂20%，氟树脂15%，耐高温颜料12%，耐高温填料5%，助剂5%，助溶剂15%，水为28%；不粘面涂层包含的原料及其质量百分比为：氟树脂36%，耐高温颜料5%，丙烯酸树酯8%，助剂0.5%，水为50.5%。
实施例3
同实施例1的涂覆步骤，其中防锈纳米隔离层包含的原料及其质量百分比为：纳米耐温树酯30%，耐高温颜料1%，防锈填料12%，助剂3%，醇类溶剂25%，水为29%；不粘底涂层包含的原料及其质量百分比为：耐高温粘结剂15%，氟树脂24%，耐高温颜料1%，耐高温填料10%，助剂3%，助溶剂18%，水为28%；不粘面涂层包含的原料及其质量百分比为：氟树脂42%，丙烯酸树酯12%，助剂5%，水为41%。
优选的，上述实施例1-3中，纳米耐温树酯为水性有机无机杂化树脂，形成涂膜后具有较高耐温性、硬度和涂膜致密性，能够很好地粘结基材和隔离酸碱盐等物质对铁质基材的腐蚀，从而提高产品的耐高温性和持久不粘性。
优选的，上述实施例1-3中，耐高温粘结剂为聚醚砜或聚醚醚酮或聚苯硫醚或聚酰胺-酰亚胺或聚酰亚胺中的一种或两种以上的组合，上述树脂粘结性优异，形成涂膜后有利于防锈纳米隔离层和不粘面涂层之间的粘结型，提高产品的耐高温性和持久不粘性。
优选的，上述实施例1-3中，氟树脂为聚四氟乙烯树酯或全氟乙烯丙烯共聚物或全氟烷氧基乙烯基醚共聚物中的一种或两种以上的组合，其一般是分散体形式提供，固含在50.0-60.0%。
优选的，上述实施例1-3中，耐高温颜料为无机颜料或有机颜料，耐温温度为大于200℃，可以选择金红石钛白、钛黄、氧化铁红、钴黑、钴蓝、钴绿、珠光粉等，可提高涂层的耐高温性。
优选的，上述实施例1-3中，耐高温填料为粉末状的晶须类或纤维类或陶瓷颗粒类无机材料，且粒径小于100μm，可以选择高岭土、石英粉、硅晶须、钛酸钾晶须、氧化铝、硅藻土、碳化硅、玻璃纤维、碳纤维和金刚石等，可提高涂层的强度。
优选的，上述实施例1-3中，防锈填料为三聚磷酸铝，具有防锈好、成本低、安全无毒的优点。
优选的，上述实施例1-3中，醇类溶剂为异丙醇或丙二醇或乙二醇甲醚；助溶剂为N-N二甲基吡咯烷酮或醇类溶剂或醇醚类溶剂或胺类溶剂中的一种或两种以上的组合，具有润湿基材和帮助水分挥发的作用。
优选的，上述实施例1-3中，助剂为分散剂或表面活性剂或润湿剂或消泡剂或成膜助剂或催化剂中的一种或两种以上的组合，有利于涂膜的成型。
以上对本发明的实施方式作了详细说明，但本发明不限于所描述的实施方式。对于本领域的技术人员而言，在不脱离本发明原理和精神的情况下，对这些实施方式进行多种变化、修改、替换和变型，仍落入本发明的保护范围内。

Claims (10)

1.一种水性防锈不粘涂层，其特征在于：依次包括防锈纳米隔离层、不粘底涂层和不粘面涂层，所述防锈纳米隔离层包含的原料及其质量百分比为：纳米耐温树酯12-30%，耐高温颜料1-12%，防锈填料0-12%，助剂0.5-5%，醇类溶剂10-25%，余量为水；所述不粘底涂层包含的原料及其质量百分比为：耐高温粘结剂12-20%，氟树脂15-24%，耐高温颜料1-12%，耐高温填料1.5-10%，助剂0.5-5%，助溶剂12-18%，余量为水；所述不粘面涂层包含的原料及其质量百分比为：氟树脂33-42%，耐高温颜料0-5%，丙烯酸树酯3-12%，助剂0.5-5%，余量为水。
2.根据权利要求1所述的一种水性防锈不粘涂层，其特征在于：所述纳米耐温树酯为水性有机无机杂化树脂。
3.根据权利要求1所述的一种水性防锈不粘涂层，其特征在于：所述耐高温粘结剂为聚醚砜或聚醚醚酮或聚苯硫醚或聚酰胺-酰亚胺或聚酰亚胺中的一种或两种以上的组合。
4.根据权利要求1所述的一种水性防锈不粘涂层，其特征在于：所述氟树脂为聚四氟乙烯树酯或全氟乙烯丙烯共聚物或全氟烷氧基乙烯基醚共聚物中的一种或两种以上的组合。
5.根据权利要求1所述的一种水性防锈不粘涂层，其特征在于：所述耐高温颜料为无机颜料或有机颜料，耐温温度为大于200℃。
6.根据权利要求1所述的一种水性防锈不粘涂层，其特征在于：所述耐高温填料为粉末状的晶须类或纤维类或陶瓷颗粒类无机材料，且粒径小于100μm。
7.根据权利要求1所述的一种水性防锈不粘涂层，其特征在于：所述防锈填料为三聚磷酸铝。
8.根据权利要求1所述的一种水性防锈不粘涂层，其特征在于：所述醇类溶剂为异丙醇或丙二醇或乙二醇甲醚；所述助溶剂为N-N二甲基吡咯烷酮或醇类溶剂或醇醚类溶剂或胺类溶剂中的一种或两种以上的组合。
9.根据权利要求1所述的一种水性防锈不粘涂层，其特征在于：所述助剂为分散剂或表面活性剂或润湿剂或消泡剂或成膜助剂或催化剂中的一种或两种以上的组合。
10.根据权利要求1所述的一种水性防锈不粘涂层的涂覆方法，其特征在于：具体涂覆步骤为：
基材处理：首先对待涂覆的铁质基材进行磷化处理，然后用30-60目的金刚砂喷砂形成粗造面；
涂层喷涂：完成步骤（1）的喷砂步骤后，在12小时内喷涂防锈纳米隔离层涂料，烘干，温度为40-60℃，烘干时间为5-10min；然后喷涂不粘底涂层涂料，烘干，温度为80-160℃，烘干时间为5-10min；最后喷涂不粘面涂层涂料，并在380-420℃，5-10min内烧结形成不粘涂膜，即在铁质基材上形成了水性防锈不粘涂层。
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