CN110760256A - 一种可用于pc材质的高硬耐磨防指纹纳米涂层及其制备方法 - Google Patents
一种可用于pc材质的高硬耐磨防指纹纳米涂层及其制备方法 Download PDFInfo
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Abstract
本发明提供一种可用于PC材质的高硬耐磨防指纹纳米涂层及其制备方法,其原料配方按重量份计包括如下组分,20~30份的主体树脂,8~10份高官单体、3~5份低官单体、2~3份含氟功能单体、0.5~1.5份无机填料、2~3份助剂、1~3份的光引发剂以及复合溶剂组成;所述的主体树脂为至少三种不同官能度的聚氨酯丙烯酸酯的混合,分别选自6~9官、9~10、10~15官脂肪族聚氨酯丙烯酸酯;所述的高官单体为6官二季戊四醇六丙烯酸酯,所述的低官单体为2官、3官丙烯酸酯单体的一种或两种;所述的无机填料为纳米金刚石粒子。本发明制备工艺简单高效,便于批量生产,所制备的涂层高硬、耐磨、防指纹、耐候性好,使用寿命长,在汽车、手机领域具有很好的应用前景。
Description
技术领域
本发明涉及PC材质的增硬涂层技术领域,具体涉及一种可用于PC材质的高硬耐磨防指纹纳米涂层及其制备方法。
背景技术
PC是以聚碳酸酯为主要成分加工而成的工程塑料,具有高透明、质轻、抗冲击、耐老化等特点,目前市场上欲将其应用于汽车内饰、手机屏幕等领域,从而代替玻璃材质,大大降低产品成本。但该材料表面硬度极低、易划伤、容易沾指纹等缺点限制了其在汽车、手机领域的应用。
目前PC材质被越来越多的厂家应用在汽车中控面板和手机显示屏上,因此其表面增硬成为其能否广泛应用的关键所在。目前多数采用热固化的方式在PC表面涂覆涂层达到增硬的目的,但热固化能耗较高,效率低,且需要的固化温度过高导致PC材质变形,从而限制了其发展。紫外光固化因其固化速度快、成膜性能好且运行成本低,受到了普遍的关注。其中由美国率先研发出的聚氨酯-丙烯酸酯光固化涂料,其涂膜具有优异的韧性,附着力、耐化学品性以及耐磨性,被广泛的应用于塑料、陶瓷、玻璃等领域。
发明专利(CN108587381A)公开了一种UV固化含氟耐磨疏水涂层的加工工艺,依次包括以下步骤:a、制备疏水纳米SiO2/TiO2颗粒;b、制备有机硅含氟丙烯酸酯乳液;c、底层疏水涂层乳液的制备;e、底层疏水涂层乳液的喷涂;f、表面疏水涂层的喷涂。该发明制备的涂层虽然提高了涂层的疏水性能,但在制备有机硅含氟丙烯酸酯乳液过程中需要的反应条件比较苛刻,无法应用在触控屏上,因此限制了其在PC基材上的应用。
发明专利(CN108084866A)一种氟改性柔性UV固化超支化水性聚氨酯涂层材料的制备方法。该法制备的涂层具有优良的耐水性、耐溶剂性和耐候性,但其制备工艺比较复杂,尤其是有机氟接枝需要严格控制温度、氮气气氛等条件,且制备的涂层也不适用于PC基材的显示屏上。
本发明要解决的技术问题是制备一种可用于PC材质的高硬耐磨防指纹纳米涂层,使其能够在汽车、手机显示领域得以应用。
发明内容
为了解决现有的光固化涂料在PC材质上硬度低、不耐磨、防污性能差等的技术问题,本发明提供一种可用于PC材质的高硬耐磨防指纹纳米涂层及其制备方法。
本发明采用以下技术方案实现:
一种可用于PC材质的高硬耐磨防指纹纳米涂层,其原料配方按重量份计包括20~30份的主体树脂,8~10份高官单体、3~5份低官单体、2~3份含氟功能单体、0.5~1.5份无机填料、2~3份助剂、1~3份的光引发剂以及复合溶剂组成;
所述的主体树脂为至少三种不同官能度的聚氨酯丙烯酸酯的混合,分别选自6~9官、9~10官、10~15官脂肪族聚氨酯丙烯酸酯;所述的高官单体为6官二季戊四醇六丙烯酸酯,所述的低官单体为2官、3官丙烯酸酯单体的一种或两种;所述的无机填料为纳米金刚石粒子。
上述技术方案中,进一步地,所述的含氟功能单体为氟化丙烯酸单体。
进一步地,所述的助剂包括流平剂、光稳定剂和含氟功能助剂。
进一步地,所述的光引发剂为(2-乙基己基)过氧二碳酸酯羟基(EHP),苯基双(2,4,6-三甲基苯甲酰基)氧化膦(819),环己基苯基甲酮(IRGACURE 184),2-羟基-2-甲基-1-苯基-1-丙酮(DAROCUR 1173),2,4,6(三甲基苯甲酰基)二苯基氧化膦(TPO)等中的任意一种或两种。
进一步地,所述的复合溶剂为乙酸乙酯、乙酸丁酯、异丙醇、乙醇中的两种或两种以上。
本发明中,所述的纳米金刚石粒子能均匀分散在树脂基体中,提高涂层的耐磨性;含氟功能助剂的引入可有效降低涂层表面能,提高涂层的疏水疏油性能,从而能够改善涂层的爽滑度以及防污性能。
本发明还提供一种上述纳米涂层的制备方法,按以下步骤进行:(1)按配方组成称取一定量无机填料加入复合有机溶剂中,加入含氟功能助剂、流平剂、光稳定剂等,在1500~2200r/min的转速下机械搅拌1~4h,并超声30~60min使其分散均匀;(2)按配比依次加入主体树脂、高官单体、低官单体、含氟功能单体,在60℃~80℃下机械搅拌(搅拌速率为2500~2800r/min)2~4h,超声分散30~60min;(3)加入光引发剂搅拌使其充分溶解,之后控制适宜的温度(20~25℃)、湿度(38%~45%)下进行喷涂或淋涂,其中,喷涂工艺为控制喷枪高度4~8cm、流量12~16g/30s、雾化120~230;(4)将涂覆好的漆膜常温下静置流平2~3min,之后置于80~90℃烘箱预烘干3~5min,最后在1000~1100mJ/cm2下固化,得到本发明所述的可用于PC基材的高硬耐磨防指纹纳米涂层。
本发明制备的纳米涂层在PC和PMMA板材上均有优异的附着力(5B),具有硬度高、耐磨损、耐化学腐蚀、耐油污以及良好的耐冲击性和耐侯性,其中,当涂层厚度为10μm左右时,铅笔硬度在PC上可达3H(750gF),PMMA上可达7H(1kgF);在PC上涂覆该涂层后,负载500gF、1*1磨头,经Bonstar 0000#钢丝绒1500次循环摩擦后,涂层表面无划痕,且磨后水接触角可达100°以上(初始水接触角为110°以上);PMMA上则可耐1kgF、1*1磨头,2500次Bonstar 0000#钢丝绒循环摩擦,磨后涂层表面无划痕且具有100°以上的磨后水接触角;该涂层经荨麻布10000次循环摩擦后仍具有100°以上的水接触角,具有优异的AF功能;此外该涂层耐水煮、耐盐雾、耐高温高湿、耐老化,可在较为复杂严苛的环境中长期使用。
本发明具有以下优点:
1.本发明的涂层通过9~10官芳香族聚氨酯丙烯酸酯、10~15官脂肪族聚氨酯丙烯酸酯的引入有效的提高了涂层的刚性,通过纳米金刚石粒子的引入,提高涂层的耐磨性;二者结合可显著增加涂层的耐磨性和硬度。
2.本发明还创造性地引入含氟功能助剂,有效降低涂层表面能,提高涂层的疏水疏油性能,从而改善涂层的爽滑度以及防污性能。
3.本发明配方原料成本低、制备工艺简单易控制,涂层采用喷涂、淋涂工艺、UV固化,低能耗,高效快速,便于大批量工业化生产,制备的涂层高硬、耐磨、防指纹、耐候性好,且涂层防污功能好易清洁,使用寿命长。
附图说明
图1为实施例1、对比例1及市售产品耐磨性及防指纹效果展示;
图2为本发明产品的硬度和附着力测试结果。
具体实施方式
下面结合具体实施例,进一步阐述本发明。应理解,这些实施例仅用于说明本发明而不用于限制本发明的范围。此外,应理解,在阅读了本发明所记载的内容之后,本领域技术人员可以对本发明作各种改动或修改,这些等价形式同样落于本发明所限定的范围。
下述实施例中所用的材料、试剂等,如无特殊说明,均可从商业途径获得。
实施例1
涂层具体原料配方为:主体树脂30份(6官聚氨酯丙烯酸酯15份、9官芳香族聚氨酯丙烯酸酯12份、15官脂肪族聚氨酯丙烯酸酯3份),6官二季戊四醇六丙烯酸酯8份,低官单体3份(2官、3官质量比为2:1),氟化丙烯酸单体2.5份,纳米金刚石粒子0.7份,流平剂0.1份,光稳定剂0.1份,含氟功能助剂1.5份,光引发剂1份(三乙醇胺与三异丙醇胺按1:1组合),溶剂为乙酸丁酯与异丙醇按1:1组成。
其中,6官聚氨酯丙烯酸酯为六官能度聚氨酯丙烯酸酯齐聚物INV-UV601,由广州昊毅科技有限公司提供;
9官芳香族聚氨酯丙烯酸酯为ZC6401,由深圳姿彩化工有限公司提供;
15官脂肪族聚氨酯丙烯酸酯由天津海因茨科技发展有限公司提供(UV树脂5316);
二季戊四醇六丙烯酸酯由天津市天骄辐射固化材料有限公司提供;
2官单体为HDDA(1,6己二醇二丙烯酸酯),采购于南京嘉中化工科技有限公司;
3官单体为乙氧化三羟甲基丙烷三丙烯酸酯(EM2382),由瀚东贸易有限公司提供;
氟化丙烯酸单体为丙烯酸(N-甲基全氟乙基磺酰氨基)乙酯,由武汉鑫伟烨化工有限公司提供;
金刚石纳米颗粒(MS-21210)由上海甄准生物科技有限公司提供;
光稳定剂184为环己基苯基甲酮;
含氟功能助剂为氟硅烷,本实施例优选全氟辛基三甲氧基硅烷,由衢州东明化工有限公司提供;
如无特殊说明,以下实施例所用原料均与实施例1相同。
料液配制方法为:按上述配方称取纳米金刚石粒子置于乙酸丁酯溶剂中,相应地加入2官、3官、氟化丙烯酸单体、流平剂、光稳定剂以及含氟功能助剂,充分高速搅拌并超声使其分散混匀;再加入6官聚氨酯丙烯酸酯、9官芳香族聚氨酯丙烯酸酯、15官脂肪族聚氨酯丙烯酸酯、二季戊四醇六丙烯酸酯,在60℃下充分高速搅拌2h并超声30min,其中搅拌速率为2500r/min;最后加入异丙醇和光引发剂,使其完全溶解并均匀分散在体系中,则所需料液制备成功。选择洁净无尘车间,在20℃温度、38%相对空气湿度下,将上述料液用800目过滤设备过滤除杂,调整喷涂工艺参数(喷枪高度4cm、流量12g/30s、雾化140)进行喷涂,常温流平2min后置于80℃干燥箱中预烘3min,最后在1000mJ/cm2的UV能量下固化,得到本发明所述的高硬耐磨防指纹纳米涂层。上述料液还可以采用淋涂和辊涂工艺,在本发明实施例中均采用喷涂工艺。
实施例2
与实施例1不同的是原料配方组成中的6官聚氨酯丙烯酸酯为10份、9官芳香族聚氨酯丙烯酸酯9份、15官脂肪族聚氨酯丙烯酸酯4份,纳米金刚石粒子为0.5份,氟硅烷为0.75份,其他与实施例1相同。
实施例3
与实施例1不同的是原料配方组成中的6官聚氨酯丙烯酸酯为13份、9官芳香族聚氨酯丙烯酸10份、15官脂肪族聚氨酯丙烯酸酯2份,偏氟丙烯酸单体2份,氟硅烷1.25份;其他与实施例1相同。
实施例4
与上述实施例不同的是原料配方组成中的2官与3官的质量比为1:1,乙酸丁酯与异丙醇质量比为3:2,其他均与实施例1相同。
对比例1
与实施例1不同的是原料配方组成中未添加纳米金刚粒子,其他与实施例1相同。
按照本发明配方制备的料液涂覆所得涂层高硬耐磨防指纹,且在PC基材上具有优异的附着力,耐候性好,综合性能突出,可广泛应用于汽车、手机显示领域,再者,本发明制备工艺简单,便于控制,可进行工业化大批量生产。本发明制备的涂层性能指标均符合市场标准,见表1。
如图1为采用本发明涂层涂覆后的产品耐磨性及防指纹效果展示,其中,(1)为实施例1耐磨性测试,(2)为对比例1(未添加纳米金刚粒子)耐磨性能测试,(3)为市售某产品的耐磨性能测试。由图可知,本发明涂层产品的初始水接触角很高,经过1500次钢丝绒摩擦后依然有很高的水接触角,说明产品耐磨性优异和防指纹效果好;而对比例和市售产品的耐磨性和防指纹效果较差;如图2为该实施例1产品的硬度和附着力,由图可知,产品的硬度高及附着力好。
表1高硬耐磨防指纹纳米涂层基本性能测试
Claims (6)
1.一种可用于PC材质的高硬耐磨防指纹纳米涂层,其特征在于,按重量份计包括如下组分,20~30份的主体树脂,8~10份高官单体、3~5份低官单体、2~3份含氟功能单体、0.5~1.5份无机填料、2~3份助剂、1~3份的光引发剂以及复合溶剂组成;
所述的主体树脂为至少三种不同官能度的聚氨酯丙烯酸酯的混合,分别选自6~9官、9~10、10~15官脂肪族聚氨酯丙烯酸酯;所述的高官单体为6官二季戊四醇六丙烯酸酯,所述的低官单体为2官、3官丙烯酸酯单体的一种或两种;所述的无机填料为纳米金刚石粒子。
2.根据权利要求1所述的可用于PC材质的高硬耐磨防指纹纳米涂层,其特征在于,所述的含氟功能单体为氟化丙烯酸单体。
3.根据权利要求1所述的可用于PC材质的高硬耐磨防指纹纳米涂层,其特征在于,所述的助剂包括流平剂、光稳定剂和含氟功能助剂。
4.根据权利要求1所述的可用于PC材质的高硬耐磨防指纹纳米涂层,其特征在于,所述的光引发剂为(2-乙基己基)过氧二碳酸酯羟基,苯基双(2,4,6-三甲基苯甲酰基)氧化膦,环己基苯基甲酮,2-羟基-2-甲基-1-苯基-1-丙酮,2,4,6(三甲基苯甲酰基)二苯基氧化膦中的任意一种或两种。
5.根据权利要求1所述的可用于PC材质的高硬耐磨防指纹纳米涂层,其特征在于,所述的复合溶剂为乙酸乙酯、乙酸丁酯、异丙醇、乙醇中的两种或两种以上。
6.根据权利要求1-5任一项所述的可用于PC材质的高硬耐磨防指纹纳米涂层的制备方法,其特征在于,包括如下步骤:a、将无机填料以及助剂加入到复合溶剂中,充分搅拌并超声使其分散均匀;b、依次加入主体树脂、高官单体、低官单体以及含氟功能单体,在60~80℃下搅拌超声,使其混合均匀并形成预聚体;c、加入光引发剂待充分溶解后,控制20~25℃温度、38%~45%湿度,进行喷涂或淋涂;d、常温流平、预烘干并采用UV方式固化,得到可用于PC基材的高硬耐磨防指纹纳米涂层。
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| WO2022007536A1 (zh) | 2020-07-06 | 2022-01-13 | 江苏菲沃泰纳米科技股份有限公司 | 透明耐磨膜层、塑料表面改性方法以及产品 |
| CN112094586A (zh) * | 2020-09-22 | 2020-12-18 | 丹阳市精通眼镜技术创新服务中心有限公司 | 一种高耐磨性疏水涂层及其制备方法 |
| CN112094586B (zh) * | 2020-09-22 | 2021-11-09 | 丹阳市精通眼镜技术创新服务中心有限公司 | 一种高耐磨性疏水涂层及其制备方法 |
| CN112094588A (zh) * | 2020-11-02 | 2020-12-18 | 宁波富纳新材料科技有限公司 | 一种防指纹防眩光涂层、包含其的保护膜及其制备方法 |
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| CN115572530A (zh) * | 2022-09-08 | 2023-01-06 | 浙江锦美材料科技有限公司 | 一种用于iml工艺的硬化涂层及其制备方法 |
| CN115572530B (zh) * | 2022-09-08 | 2023-08-15 | 锦美星灿新材料(安徽)有限公司 | 一种用于iml工艺的硬化涂层及其制备方法 |
| CN116444843A (zh) * | 2023-02-22 | 2023-07-18 | 太仓斯迪克新材料科技有限公司 | 耐uv、耐湿热、耐高温pc硬化膜 |
| CN116751391A (zh) * | 2023-02-22 | 2023-09-15 | 太仓斯迪克新材料科技有限公司 | 车载hud用多功能光学隔离膜 |
| CN116987311A (zh) * | 2023-07-24 | 2023-11-03 | 四川龙华光电薄膜股份有限公司 | 一种高光柔性高耐磨持久防指纹硬化膜的制备方法 |
| CN118206919A (zh) * | 2024-04-25 | 2024-06-18 | 扬州大学 | 一种双层聚氨酯丙烯酸超疏水涂层及其制备方法 |
| CN118206919B (zh) * | 2024-04-25 | 2026-04-03 | 扬州大学 | 一种双层聚氨酯丙烯酸超疏水涂层及其制备方法 |
| CN120399558A (zh) * | 2025-04-27 | 2025-08-01 | 深圳市中仁能源科技有限公司 | 一种耐磨性的防指纹液含氟涂层材料及制备方法及应用 |
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