CN114634646A - 一种柔性高硬度高折叠盖板高效率低成本制作工艺 - Google Patents
一种柔性高硬度高折叠盖板高效率低成本制作工艺 Download PDFInfo
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Abstract
本发明公开了一种柔性高硬度高折叠盖板高效率低成本制作工艺,具体涉及柔性可折叠屏幕盖板技术领域,包括步骤一、配置硬化液:硬化液所使用原料(按重量份数计)包括树脂10‑50份、柔性单体10‑30份、填料5‑40份、分散剂0.5‑4份、光引发剂0.5‑2.5份、有机溶剂30‑80份、流平剂0.1‑1份、抗静电剂0.5‑10份;步骤二、制备硬化膜;步骤三、制备盖板:在基材非硬化面印刷油墨边框,然后切割成盖板形状,得柔性高硬度高耐磨盖板。本发明的盖板具有高硬度、高耐磨、防污和高拉伸性能,通过添加高硬度高耐磨填料可以进一步提升硬度和耐磨,通过添加柔性单体可以提升柔韧性即拉伸性,通过添加流平剂可以实现防污爽滑效果。
Description
技术领域
本发明涉及柔性可折叠屏幕盖板技术领域,具体涉及一种柔性高硬度高折叠盖板高效率低成本制作工艺。
背景技术
如今,显示终端产品形态正进入全新变革期,柔性成为各厂商发力的方向。手机、电视机显示屏幕可弯曲折叠不再是梦。三星、苹果、华为、小米等品牌手机制造商已经开发出多款折叠屏产品,一上市便给行业带来一波新增量。未来,更多柔性形态终端品牌产品将不断推出创新,而赋予产品这种特性就需要引入新材料,让屏幕“软下来”。在众多柔性材料中,柔性盖板必须同时具备可反复弯折,透明,超薄,及足够的硬度。常规的要求是要能在10毫米直径的曲率下弯折超过20万次,当然这并不是硬性标准。理论上,厚度小于100微米的玻璃是有可能满足这些特性的,但是对于弯折性能仍然缺乏足够的数据支撑。目前通过无色透明聚酰亚胺(CPI)和硬化涂层是解决柔性盖板的最佳材料。
柔性聚酰亚胺硬化膜盖板,最终能够决定产品柔性形态实现的关键是一层薄薄的盖板。在可折叠显示器件中,原来的传统材料玻璃盖板已经不再适合,尤其是前盖板。传统平面显示设备中,盖板一般为玻璃或高硬度塑料,但玻璃非常脆,玻璃厂商也尝试将玻璃做的很薄以实现可弯折,但难度非常高;传统高硬度塑料一般为PET薄膜上面涂布高硬度硬化膜,可以实现弯折,但折痕非常明显,且PET硬度远远低于玻璃。那么,开发一种既具有高硬度又可折叠性能的技术的需求就尤为迫切。
目前此类产品主要聚酰亚胺硬化膜路线,CPI高硬度透明薄膜为基膜涂布加硬涂层后实现高硬度高折叠,高效率低成本印刷成为现在趋势,目前此种方案硬度仅能达到4H,且随着弯折半径减小,生产印刷良率低,印刷效率低,一般高硬度硬化液和油墨印刷配方已经无法满足要求,需要增添硬化液配方及盖板油墨配方解决这样痛点问题。因此,提出一种柔性高硬度高折叠盖板高效率低成本制作工艺。
发明内容
本发明的目的是提供一种柔性高硬度高折叠盖板高效率低成本制作工艺,本发明所要解决的技术问题是克服目前市面上CPI硬化膜硬度仅能达到4H,且柔韧性折弯不足,生产效率缓慢,工艺工序多材料成本高,本发明提供一种自制硬化液、柔性高硬度高折叠的盖板硬化膜、柔性高效率低成本盖板及其制备方法,本发明柔性高硬度高耐高折叠高效率低成本盖板硬化膜硬度可以达到7H,折弯R1mm可达500K,卷对卷油墨印刷机可以高效率连续性生产,工序少、成本低、良率高。
为了实现上述目的,本发明提供如下技术方案:一种柔性高硬度高折叠盖板高效率低成本制作工艺,具体步骤如下:
步骤一、配置硬化液:
S1、硬化液所使用原料(按重量份数计)包括树脂10-50份、柔性单体10-30份、高硬度高耐磨填料5-40份、分散剂0.5-4份、光引发剂0.5-2.5份、有机溶剂30-80份、防污流平剂0.1-1份、抗静电剂0.5-10份;
所述高硬度高耐磨树脂为聚氨酯丙烯酸酯类化合物,官能度为3-30,分子量为800-5000;所述柔性单体为脂肪族聚氨酯丙烯酸酯单体,官能度2-4,分子量大于1000;所述高硬度高耐磨填料为氧化硅、倍半硅氧烷、氧化铝、氧化锌中的任意一种或几种,所述高硬度高耐磨填料颗粒表面接枝有含双键官能团,所述含双键官能团包括丙烯酸酯键或碳碳双键,所述高硬度高耐磨填料颗粒粒径为1-500nm;所述分散剂为羧酸盐、聚氨酯、聚酰胺或丙烯酸嵌段共聚物;所述光引发剂为裂解型光引发剂、光敏型光引发剂中的任意一种;所述有机溶剂为乙酸乙酯、丁酮、丙酮、甲基异丁酮、丙二醇甲醚中的任意一种或几种;所述防污流平剂为全氟聚醚类流平剂;所述抗静电剂为聚环氧乙烷、聚醚酯酰胺中的任意一种。
S2、取15-40份有机溶剂,再加入10-50份的高耐磨高硬度树脂和10-30份的柔性单体搅拌均匀,然后加入0.5-2.5份光引发剂搅拌均匀后得到组分A;取15-40份有机溶剂,再加入0.5-4份分散剂搅拌均匀,然后加入5-40份高硬度高耐磨填料高速搅拌均匀后得到组分B;将组分B加入组分A中混合,搅拌均匀,最后再加入0.1-1份防污流平剂和0.5-10份抗静电剂搅拌均匀搅拌均匀制成硬化液;
步骤二、制备硬化膜:
S1:选取基材:CPI基膜;
S2:将硬化液通过涂布的方式涂布在基材上,烘干,经UV固化后形成低水接高折射率层,从而制备得柔性高硬度高耐磨盖板硬化膜;
步骤三、制备盖板:在基材非硬化面印刷油墨边框,然后切割成盖板形状,得柔性高硬度高耐磨盖板。
在上述技术方案中,本发明提供的技术效果和优点:
1、本发明通过硬化液固化后形成硬化膜,该硬化膜具有高拉伸、高硬度、高水接、高爽滑防污的特点,通过添加柔性单体可以提升拉伸率,通过添加高硬度高耐磨填料可以进一步提高硬度和耐磨耗性能,通过添加流平剂可以提高爽滑度水接触角和防污性能;
2、本发明的硬化液易于配制,工艺简单,盖板硬化膜制备效果好,适合大批量生产,相比现有盖板硬化膜硬度高耐磨性能好,且实现同时内弯外弯,折弯R1mm可达500K;
3、本发明制备的柔性高硬度高折叠盖板具有以下优异的性能:高耐磨性能:钢丝绒耐刮擦6000cycles(1kg荷重);低反射性能:反射率Rf<3.0%;抗UV性能:ΔE≤2,涂层外观无异常;具有较好的抗静电性;
4、本发明的柔性高硬度高折叠盖板生产工艺是连续性高效卷对接印刷生产,低成本,高效率,可取代国外片材工艺。
附图说明
为了更清楚地说明本申请实施例或现有技术中的技术方案,下面将对实施例中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本发明中记载的一些实施例,对于本领域普通技术人员来讲,还可以根据这些附图获得其他的附图。
图1为本发明的工艺流程图。
具体实施方式
为了使本领域的技术人员更好地理解本发明的技术方案,下面将结合附图对本发明作进一步的详细介绍。
实施例1:
本发明提供了如图1所示的一种柔性高硬度高折叠盖板高效率低成本制作工艺,具体步骤如下:
步骤一、配置硬化液:
取25份丁酮,再加入20份丙烯酸树脂R56,600rpm转速搅拌40min,搅拌均匀后加入10份丙烯酸单体R026,1.5份光引发剂1841,600rpm转速搅拌40min搅拌均匀,得到组分A;称量甲基异丁酮25份,加入1份分散剂3666,3000rpm搅30min搅拌均匀,称量倍半硅氧烷A56共10份,缓缓加入甲基异丁酮和分散剂混合物中,边搅拌边加入,3000rpm转速搅拌60min,搅拌过程中搅拌缸温度保持在22℃,得到组分B;将组分B缓缓加入组分A中,在600rpm转速下边搅拌边加入,最后称量0.3份防污流平剂A99和5份聚环氧乙烷加入上述溶液中,600rpm转速下搅拌40min搅拌均匀;
步骤二、制备硬化膜:
S1:选取基材:CPI基膜;
S2:将硬化液用线棒涂布于50μmCPI基材,在90℃烘箱中烘烤3min,取出放置在UV固化机上进行固化,UV能量400mJ/cm,氧气浓度80ppm,得到得柔性高硬度高耐磨盖板硬化膜;
步骤三、制备盖板:在基材非硬化面印刷油墨边框,然后切割成盖板形状,得柔性高硬度高耐磨盖板。
实施例2
本发明提供了如图1所示的一种柔性高硬度高折叠盖板高效率低成本制作工艺,具体步骤如下:
步骤一、配置硬化液:
取25份丁酮,再加入20份丙烯酸树脂R56,600rpm转速搅拌20min,搅拌均匀后加入10份丙烯酸单体R026,1.5份光引发剂1841,600rpm转速搅拌40min搅拌均匀,得到组分A;称量甲基异丁酮25份,加入1份分散剂3666,3000rpm搅30min搅拌均匀,称量倍半硅氧烷A56共10份,缓缓加入甲基异丁酮和分散剂混合物中,边搅拌边加入,3000rpm转速搅拌60min,搅拌过程中搅拌缸温度保持在22℃,得到组分B;将组分B缓缓加入组分A中,在600rpm转速下边搅拌边加入;最后称量0.3重量份流平剂A99和5份聚环氧乙烷加入上述溶液中,600rpm转速下搅拌40min搅拌均匀;
步骤二、制备硬化膜:
S1:选取基材:CPI基膜;
将上述硬化液用线棒涂布于50μmCPI基材,在90℃烘箱中烘烤3min,取出放置在UV固化机上进行固化,UV能量500mJ/cm,氧气浓度80ppm,固化后得柔性高硬度高耐磨盖板硬化膜;
步骤三、制备盖板:在基材非硬化面印刷油墨边框,然后切割成盖板形状,得柔性高硬度高耐磨盖板。
实施例3
步骤一、配置硬化液:
取25份丁酮,再加入20份丙烯酸树脂R56,600rpm转速搅拌40min,搅拌均匀后加入20份丙烯酸单体R02561,2份光引发剂1841,600rpm转速搅拌40min搅拌均匀,得到组分A;称量甲基异丁酮25份,加入1.5份分散剂3666,3000rpm转速下搅拌40min搅拌均匀,称量倍半硅氧烷A27共15份,缓缓加入甲基异丁酮和分散剂混合物中,边搅拌边加入,3000rpm转速搅拌60min,搅拌过程中保持搅拌缸温度22℃,得到组分B;将组分B缓缓加入组分A中,600rpm转速下边搅拌边加入;最后称量0.3份流平剂A99和5份聚环氧乙烷加入上述溶液中,600rpm搅拌40min搅拌均匀;
步骤二、制备硬化膜:
S1:选取基材:CPI基膜;
S2:将硬化液用线棒涂布于50μmCPI基材,在90℃烘箱中烘烤3min,取出放置在UV固化机上进行固化,UV能量500mJ/cm,氧气浓度80ppm,固化后得柔性高硬度高耐磨盖板硬化膜;
步骤三、制备盖板:在基材非硬化面印刷油墨边框,然后切割成盖板形状,得柔性高硬度高耐磨盖板。
对比例1
步骤一、配置硬化液:
取25份丁酮,再加入20份丙烯酸树脂R56,600rpm转速搅拌30min,搅拌均匀后加入1份光引发剂1841,600rpm转速搅拌40min搅拌均匀,得到组分A;称量甲基异丁酮25份,加入2份分散剂3021,3000rpm转速搅拌30min搅拌均匀,称量氧化铝A259共20份,缓缓加入甲基异丁酮和分散剂混合物中,边搅拌边加入,3000rpm转速搅拌60min,搅拌过程中保持搅拌缸温度22℃,得到组分B;将组分B缓缓加入组分A中,500rpm转速下边搅拌边加入;最后称量0.3份流平剂A22加入上述溶液中,600rpm转速搅拌50min搅拌均匀。
步骤二、制备硬化膜:
S1:选取基材:CPI基膜;
S2:将硬化液用线棒涂布于50μmCPI基材,在90℃烘箱中烘烤3min,取出放置在UV固化机上进行固化,UV能量400mJ/cm,氧气浓度80ppm,固化后得盖板硬化膜;
步骤三、制备盖板:在基材非硬化面印刷油墨边框,然后切割成盖板形状,得柔性高硬度高耐磨盖板。
对比例2
步骤一、配置硬化液:
取25份丁酮,再加入20份丙烯酸树脂R56,600rpm转速搅拌30min,搅拌均匀后加入1份光引发剂184,500rpm转速搅拌30min搅拌均匀,得到组分A;称量甲基异丁酮25份,加入1份分散剂4010,2000rpm转速搅拌20min搅拌均匀,称量倍半硅氧烷A56共10份,缓缓加入甲基异丁酮和分散剂混合物中,边搅拌边加入,3000rpm转速搅拌50min,搅拌过程中保持搅拌缸温度22℃,得到组分B;将组分B缓缓加入组分A中,500rpm转速下边搅拌边加入;最后称量0.3份流平剂A033加入上述溶液中,600rpm转速搅拌60min搅拌均匀;
步骤二、制备硬化膜:
S1:选取基材:CPI基膜;
S2:将硬化液用线棒涂布于50μmCPI基材,在90℃烘箱中烘烤3min,取出放置在UV固化机上进行固化,UV能量600mJ/cm,氧气浓度80ppm,固化后得盖板硬化膜;
步骤三、制备盖板:在基材非硬化面印刷油墨边框,然后切割成盖板形状,得柔性高硬度高耐磨盖板。
对比例3
步骤一、配置硬化液:
取25份丁酮,再加入20份丙烯酸树脂R56,600rpm转速搅拌30min,搅拌均匀后加入10份丙烯酸单体R0256,1.5份光引发剂184,500rpm转速搅拌30min搅拌均匀,得到组分A;称量甲基异丁酮25份,加入组分A中;最后称量0.3份流平剂A88加入上述溶液中,600rpm转速搅拌40min搅拌均匀;
步骤二、制备硬化膜:
S1:选取基材:CPI基膜;
S2:将硬化液用线棒涂布于50μmCPI基材,在90℃烘箱中烘烤3min,取出放置在UV固化机上进行固化,UV能量300mJ/cm,氧气浓度80ppm,固化后得盖板硬化膜;
步骤三、制备盖板:在基材非硬化面印刷油墨边框,然后切割成盖板形状,得柔性高硬度高耐磨盖板。
对比例4
步骤一、配置硬化液:
取25份丁酮,再加入20份丙烯酸树脂R56,600rpm转速搅拌30min,搅拌均匀后加入10份丙烯酸单体R0255,1.5份光引发剂1814,600rpm转速搅拌30min搅拌均匀,得到组分A;称量甲基异丁酮25份,加入1份分散剂4020,3000rpm转速搅拌30min搅拌均匀,称量倍半硅氧烷A237共10份,缓缓加入甲基异丁酮和分散剂混合物中,边搅拌边加入,3000rpm转速搅拌60min,搅拌过程中保持搅拌缸温度22℃,得到组分B;将组分B缓缓加入组分A中,600rpm转速下边搅拌边加入;最后称量0.35份流平剂A034加入上述溶液中,600rpm转速搅拌50min搅拌均匀。
步骤二、制备硬化膜:
S1:选取基材:CPI基膜;
S2:将硬化液用线棒涂布于50μmCPI基材,在90℃烘箱中烘烤3min,取出放置在UV固化机上进行固化,UV能量400mJ/cm,氧气浓度80ppm,固化后得盖板硬化膜;
步骤三、制备盖板:在基材非硬化面印刷油墨边框,然后切割成盖板形状,得柔性高硬度高耐磨盖板。
实施例1-3及对比例1-4制备得到的盖板硬化膜的性能测试结果如表1所示:
通过表1可知:本发明通过添加柔性单体能够提升硬化膜的拉伸性能;通过添加高硬度高耐磨填料能够进一步提升盖板硬化膜的硬度和耐磨性能;通过添加助剂可以提高爽滑度水接触角和防污性能;硬化膜而且具有较好的抗静电性。
以上只通过说明的方式描述了本发明的某些示范性实施例,毋庸置疑,对于本领域的普通技术人员,在不偏离本发明的精神和范围的情况下,可以用各种不同的方式对所描述的实施例进行修正。因此,上述附图和描述在本质上是说明性的,不应理解为对本发明权利要求保护范围的限制。
Claims (9)
1.一种柔性高硬度高折叠盖板高效率低成本制作工艺,其特征在于:具体步骤如下:
步骤一、配置硬化液:
S1、硬化液所使用原料(按重量份数计)包括树脂10-50份、柔性单体10-30份、填料5-40份、分散剂0.5-4份、光引发剂0.5-2.5份、有机溶剂30-80份、流平剂0.1-1份、抗静电剂0.5-10份;
S2、取15-40份有机溶剂,再加入10-50份的树脂和10-30份的柔性单体搅拌均匀,然后加入0.5-2.5份光引发剂搅拌均匀后得到组分A;取15-40份有机溶剂,再加入0.5-4份分散剂搅拌均匀,然后加入5-40份填料高速搅拌均匀后得到组分B;将组分B加入组分A中混合,搅拌均匀,最后再加入0.1-1份流平剂和0.5-10份抗静电剂搅拌均匀制成硬化液;
步骤二、制备硬化膜:
S1:选取基材:CPI基膜;
S2:将硬化液通过涂布的方式涂布在基材上,烘干,经UV固化后制备得柔性高硬度高耐磨盖板硬化膜;
步骤三、制备盖板:在基材非硬化面印刷油墨边框,然后切割成盖板形状,得柔性高硬度高耐磨盖板。
2.根据权利要求1所述的一种柔性高硬度高折叠盖板高效率低成本制作工艺,其特征在于:所述树脂为聚氨酯丙烯酸酯类化合物。
3.根据权利要求1所述的一种柔性高硬度高折叠盖板高效率低成本制作工艺,其特征在于:所述柔性单体为脂肪族聚氨酯丙烯酸酯单体。
4.根据权利要求1所述的一种柔性高硬度高折叠盖板高效率低成本制作工艺,其特征在于:所述填料为氧化硅、倍半硅氧烷、氧化铝、氧化锌中的任意一种或几种,所述填料颗粒粒径为1-500nm。
5.根据权利要求1所述的一种柔性高硬度高折叠盖板高效率低成本制作工艺,其特征在于:所述分散剂为羧酸盐、聚氨酯、聚酰胺或丙烯酸嵌段共聚物。
6.根据权利要求1所述的一种柔性高硬度高折叠盖板高效率低成本制作工艺,其特征在于:所述光引发剂为裂解型光引发剂、光敏型光引发剂中的任意一种。
7.根据权利要求1所述的一种柔性高硬度高折叠盖板高效率低成本制作工艺,其特征在于:所述有机溶剂为乙酸乙酯、丁酮、丙酮、甲基异丁酮、丙二醇甲醚中的任意一种或几种。
8.根据权利要求1所述的一种柔性高硬度高折叠盖板高效率低成本制作工艺,其特征在于:所述流平剂为全氟聚醚类流平剂。
9.根据权利要求1所述的一种柔性高硬度高折叠盖板高效率低成本制作工艺,其特征在于:所述抗静电剂为聚环氧乙烷、聚醚酯酰胺中的任意一种。
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