CN110607068B - 聚合物薄膜及其制备方法、柔性折叠面板 - Google Patents
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Abstract
本发明提供一种聚合物薄膜及其制备方法、柔性折叠面板。聚合物薄膜包括衬底以及强化层,其中,强化层设置在衬底上,强化层包括聚合物,聚合物的侧链包括多个刚性链段和多个柔性链段,刚性链段和柔性链段对聚合物的侧链进行修饰强化,聚合物由聚合物的单体通过一系列的反应合成,聚合物薄膜强化了柔性折叠面板覆盖板的表面硬度以及提高了其抗摩擦性能和弯折性能。
Description
技术领域
本揭示涉及显示技术领域,尤其涉及一种聚合物薄膜及其制备方法、柔性折叠面板。
背景技术
有机电致发光显示器件(Organic Light-Emitting Device,OLED)相对于液晶显示装置具有自发光、反应快、轻薄等优点,已成为显示领域的新兴技术。
可折叠的OLED显示屏是目前研究的热点之一,在可折叠的显示屏幕中,位于表面的覆盖板起到了很重要的保护作用,因此,屏幕表面硬度的高低将直接决定屏幕的安全。
但是,由于可折叠设备的需求,覆盖板还需要具有良好的弯折和恢复性能,为了提高覆盖板的性能,需要在覆盖板表面添加或涂布聚合物材料,通过添加的聚合物材料来达到提高现有的覆盖板的表面硬度以及弯折性能,但是的聚合物在涂布到覆盖板以及显示屏幕后,其覆盖板的表面硬度与弯折性不能很好的相匹配,材料的表面硬度较大但是其弯折性较差,或者弯折性能较好但是其表面硬度又不高,造成显示面板的质量以及综合性能较差。
综上所述,现有的OLED显示屏幕以及显示屏幕的覆盖板在添加聚合物后,其表面硬度与其弯折性能不能很好的相匹配,在实际产品中,存在着材料的表面硬度以及弯折性不能相互平衡,显示屏幕的质量以及综合性能差等问题。针对上述问题,需要提出进一步的解决和完善方案。
发明内容
本揭示提供一种聚合物薄膜及其制备方法、柔性折叠面板,以解决现有的OLED显示屏幕以及显示屏幕的覆盖板在添加聚合物后,其表面硬度与其弯折性能不能很好的相匹配,在实际产品中,存在着材料的表面硬度以及弯折性不能相互平衡,显示屏幕的质量以及综合性能差等问题。
为解决上述技术问题,本揭示实施例提供的技术方案如下:
根据本揭示实施例的第一方面,提供了一种聚合物薄膜,包括:
衬底;以及
强化层;
其中,所述强化层设置在所述衬底上,所述强化层包括聚合物,所述聚合物的侧链包括多个刚性链段和多个柔性链段,所述刚性链段和所述柔性链段对所述聚合物的所述侧链进行修饰强化。
根据本揭示一实施例,所述聚合物的结构式为:
所述聚合物的结构式为:
根据本揭示一实施例,所述聚合物的结构式为:
根据本揭示实施例的第二方面,提供一种聚合物薄膜的制备方法,包括如下步骤:
S100:将双(3-溴-4-异氰酸根合苯基)甲烷与添加物混合反应,并制备聚合物单体;
S101:将所述聚合物单体与乙二酸反应,制备所述聚合物;
S102:将所述聚合物涂布在衬底上,形成聚合物薄膜。
根据本揭示一实施例,所述聚合物单体为:N,N'-(亚甲基双(6-异氰酸根合-1,3-亚苯基))双(4-己基萘-1-胺)或N,N'-(亚甲基双(6-异氰酸根合-1,3-亚苯基))双(10-辛基蒽-9-胺)。
根据本揭示一实施例,所述添加物为4-己基萘胺,所述步骤S100中,还包括如下步骤:
S200:将双(3-溴-4-异氰酸根合苯基)甲烷和4-己基萘胺加入烧瓶中,并加入碳酸铯、碘化亚铜以及18-冠-6;
S201:在所述烧瓶中,通入氩气,并加入除氧的N,N-二甲基丙烯基脲,以形成混合物,将所述混合物置于180℃反应24小时;
S202:将所述烧瓶冷却至室温,倒入冰水,用二氯甲烷萃取三次,将有机相合并,加入硅胶,除去溶剂,柱层析进行分离,得到所述聚合物单体。
根据本揭示一实施例,所述步骤S201中还包括如下步骤:
S300:将N,N'-(亚甲基双(6-异氰酸根合-1,3-亚苯基))双(4-己基萘-1-胺)和乙二酸混合加入烧瓶中,通入氩气并加入稀盐酸,于80℃反应12小时;
S301:用甲醇沉降,得到白色固体并依次在正己烷、丙酮中抽提两天,得到所述聚合物。
根据本揭示一实施例,所述添加物包括10-氨基-9-辛基蒽,所述步骤S100中还包括如下步骤:
S400:将双(3-溴-4-异氰酸根合苯基)甲烷和10-氨基-9-辛基蒽加入烧瓶中,并加入碳酸铯、碘化亚铜以及18-冠-6;
S401:通入氩气,并加入除氧的N,N-二甲基丙烯基脲(DMPU),混合物置于180℃反应24小时;
S402:冷却至室温,倒入冰水,用二氯甲烷萃取三次,将有机相合并,加入硅胶,除去溶剂,柱层析进行分离,得到所述聚合物单体。
根据本揭示一实施例,所述步骤S201中还包括如下步骤:
S500:将N,N'-(亚甲基双(6-异氰酸根合-1,3-亚苯基))双(10-辛基蒽-9-胺)和乙二酸混合加入烧瓶中,通入氩气并加入稀盐酸,于80℃反应12小时;
S301:用甲醇沉降,得到白色固体并依次在正己烷、丙酮中抽提两天,得到所述聚合物。
根据本揭示的第三方面,还提供了一种柔性折叠面板,所述柔性折叠面板包括本揭示实施例提供的所述聚合物薄膜,所述聚合物薄膜的制备根据本揭示中的制备方法制备得到。
综上所述,本揭示实施例的有益效果为:
本揭示提供一种聚合物薄膜及制备方法、柔性折叠面板,通过在硬化层上涂布聚合物,所述聚合物结构的侧链中,包括有不同比例的刚性链段和柔性链段,刚性链段和柔性链段对聚合物的侧链进行修饰,并强化硬化层的力学性能,提高了硬化层的表面硬度和抗摩擦性能,提高柔性折叠面板的弯折性能。
附图说明
为了更清楚地说明实施例或现有技术中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作简单介绍,显而易见地,下面描述中的附图仅仅是揭示的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。
图1为本揭示实施例的聚合物薄膜结构示意图;
图2为本揭示实施例的聚合物薄膜的制备工艺流程图;
图3为本揭示实施例提供的柔性折叠面板结构示意图。
具体实施方式
下面将结合本揭示实施例中的附图,对本揭示实施例中的技术方案进行清楚、完整地描述。显然,所描述的实施例仅仅是本揭示一部分实施例,而不是全部的实施例。基于本揭示中的实施例,本领域技术人员在没有作出创造性劳动前提下所获得的所有其他实施例,都属于本揭示保护的范围。
为了防止显示屏幕的破裂,尤其是柔性可折叠屏幕的破裂,一般需要在屏幕上添加一覆盖板,从而对屏幕起到很好的保护作用。但是,在实际应用时,尤其在一些柔性折叠屏幕上,覆盖板的硬度和其弯折恢复性能不能相互平衡,存在着硬度过高或者不足,弯折性能过低等问题。
本揭示实施例中,提供一种聚合物薄膜。起保护作用的覆盖板主要由硬化层和柔性基底两部分组成,本揭示提供的聚合物薄膜涂布在硬化层上,进而起到调节整个覆盖板的表面硬度和弯折性能。如图1所示,图1为本揭示实施例的聚合物薄膜结构示意图。聚合物薄膜包括衬底100以及强化层101。强化层101设置在衬底100上,其中,强化层101还包括聚合物,强化层101由所述聚合物构成。
具体的,所述聚合物为A,其结构式为:
具体的,所述聚合物为B,其结构式为:
所述聚合物的分子结构式的侧链上包括多个刚性链段和多个柔性链段,刚性链段和柔性链段作用在聚合物的侧链上,并对聚合物的侧链进行修饰,从而达到强化的目的。本揭示实施例提供的聚合物通过在侧链上引入不同的刚性链段和柔性链段,并调节两者的比例,来对膜层进行强化,从而满足柔性可折叠显示屏的需求。
本揭示实施例提供一种聚合物薄膜的制备方法,如图2所示,图2为本揭示实施例的聚合物薄膜的制备工艺流程图。制备工艺流程包括如下步骤:
S100:将双(3-溴-4-异氰酸根合苯基)甲烷与添加物混合反应,并制备聚合物单体
在步骤S100中,主要制备聚合物的单体,为后续聚合物的制备做准备。
S101:将所述聚合物单体与乙二酸反应,制备聚合物
通过步骤S100中得到的聚合物单体,并进行一系列的化学合成反应,最终制备得到本揭示实施例的聚合物。
S102:将所述聚合物涂布在衬底上,形成聚合物薄膜
最后,将制备的聚合物涂布在衬底上,并干燥成膜,形成覆盖板上的强化膜。
具体的,在制备聚合物的过程中,聚合物的单体包括:N,N'-(亚甲基双(6-异氰酸根合-1,3-亚苯基))双(4-己基萘-1-胺)或N,N'-(亚甲基双(6-异氰酸根合-1,3-亚苯基))双(10-辛基蒽-9-胺)。
当所述聚合物为A,此时,聚合物A的单体化学式为C47H48N4O2,即N,N'-(亚甲基双(6-异氰酸根合-1,3-亚苯基))双(4-己基萘-1-胺)。
聚合物A由聚合物A的单体经过一系列的反应合成。具体的,首先合成聚合物A的单体,其合成过程如下:
将双(3-溴-4-异氰酸根合苯基)甲烷(4.08g,10mmol)和4-己基萘胺(4.54g,20mmol)两者物质加入到100ml的两口烧瓶中;
再加入添加物,所述添加物为碳酸铯(4.62g,24mmol)、碘化亚铜(228mg,1.2mmol)以及18-冠-6(104mg,0.4mmol);
添加完成后,抽通三次,并向烧瓶中充入保护气体氩气,同时加入50mL除氧的N,N-二甲基丙烯基脲(DMPU),接着,将混合物置于180℃反应24小时;
最后,将烧瓶内的物质冷却至室温,混合物倒入100ml的冰水中,用二氯甲烷萃取三次,将有机相合并,加入硅胶,除去溶剂,柱层析进行分离,其中分离液为二氯甲烷和正己烷,两者的体积比为1:1,得到白色固体4.2g,在整个制备工艺中,其白色固体的产率为60%,产率高于现有生产工艺中的产率。
具体的,其单体合成化学反应如下所示:
对上述白色固体物质进行核磁检测,与聚合物A的单体的化学式吻合。
聚合物A的单体制备完成后,通过A的单体制备聚合物。具体的包括如下步骤:
首先,将聚合物A的单体,即N,N'-(亚甲基双(6-异氰酸根合-1,3-亚苯基))双(4-己基萘-1-胺)(4.2g,6mmol)和乙二酸(0.558g,6.2mmol)加入25ml圆底烧瓶中;
然后,通入氩气并排除氧气,并加入10ml稀盐酸,混合物于80℃反应12小时后停止;
最后,用50ml甲醇沉降,得到白色固体,并将白色固体依次在正己烷、丙酮中抽提两天,最终得到无色固体2.51g。
通过测定,在聚合物的合成工艺中,其产率为53%。聚合物的重均分子量为2356kg/mol,数均分子量为1980kg/mol,分散度为1.83。
具体的,其单体合成聚合物的化学反应如下所示:
优选的,所述聚合物为B时,在合成过程中,聚合物B由聚合物B的单体通过一系列的化学合成制备而来,具体的,聚合物B的单体的化学式为C59H60N4O2,即N,N'-(亚甲基双(6-异氰酸根合-1,3-亚苯基))双(10-辛基蒽-9-胺)。
聚合物B由聚合物B的单体经过一系列的反应合成。具体的,首先合成聚合物B的单体,其合成过程如下:
首先,将双(3-溴-4-异氰酸根合苯基)甲烷(4.08g,10mmol)和10-氨基-9-辛基蒽(6.1g,20mmol)一同加入100ml两口烧瓶中;
再加入添加物,所述添加物为碳酸铯(4.62g,24mmol)、碘化亚铜(228mg,1.2mmol)以及18-冠-6(104mg,0.4mmol);
随后,抽通三次,并充入氩气,加入50mL除氧的N,N-二甲基丙烯基脲(DMPU),置于180℃反应24小时;
最后,将反应冷却至室温,倒入100ml冰水中,用二氯甲烷萃取三次,将有机相合并,加入硅胶,除去溶剂,柱层析进行分离(二氯甲烷:正己烷v/v=1:2),得到白色固体4.1g,产率为48%。
具体的,其合成单体的化学反应如下:
对上述白色固体物质进行核磁检测,与聚合物B的单体的化学式吻合。
聚合物B的单体制备完成后,通过B的单体制备聚合物。具体的包括如下步骤:
首先,将N,N'-(亚甲基双(6-异氰酸根合-1,3-亚苯基))双(10-辛基蒽-9-胺)(4.1g,4.7mmol)和乙二酸(0.441g,4.9mmol)加入到25ml圆底烧瓶中;
随后,通入氩气除去氧气,并加入10ml稀盐酸,80℃反应12小时后停止;
最后,用50ml甲醇沉降,得到白色固体,将白色固体依次在正己烷、丙酮中抽提两天,得到无色固体。
其中,得到的白色固体的质量为3.07g,产率为68%。聚合物B的重均分子量为2578kg/mol,数均分子量为2043kg/mol,分散度为1.79。
具体的,由单体合成聚合物B的反应如下所示:
最终,制备得到本揭示实施例提供的聚合物薄膜。将其涂布在覆盖板上,当聚合物A作为硬化层时,涂布在透明聚酰亚胺上得到覆盖板的表面硬度为2H;当聚合物B作为硬化层时,涂布在透明聚酰亚胺上得到覆盖板的表面硬度为3H。硬化层的硬度均得到提升,并且,还具有好的弯折性能和抗摩擦性能。
本揭示实施例还提供一种柔性折叠面板,如图3所示,图3为本揭示实施例提供的柔性折叠面板。柔性折叠面板300上设置有本揭示实施例提供的聚合物薄膜301,聚合物薄膜301通过本揭示实施例中的制备方法制备而来。
以上对本揭示实施例所提供的一种聚合物薄膜及其制备方法、柔性折叠面板进行了详细介绍,以上实施例的说明只是用于帮助理解本揭示的技术方案及其核心思想;本领域的普通技术人员应当理解:其依然可以对前述各实施例所记载的技术方案进行修改,而这些修改或者替换,并不使相应技术方案的本质脱离本揭示各实施例的技术方案的范围。
Claims (8)
1.一种聚合物薄膜,其特征在于,包括:
衬底;以及
强化层;
其中,所述强化层设置在所述衬底上,所述强化层包括聚合物,所述聚合物的侧链包括多个刚性链段和多个柔性链段,所述刚性链段和所述柔性链段对所述聚合物的所述侧链进行修饰强化;
所述聚合物薄膜通过如下步骤制备得到:
S100:将双(3-溴-4-异氰酸根合苯基)甲烷与添加物混合反应,并制备聚合物单体,其中,所述添加物为4-己基萘胺或10-氨基-9-辛基蒽;
S101:将所述聚合物单体与乙二酸反应,制备聚合物;
S102:将所述聚合物涂布在衬底上,形成聚合物薄膜。
2.一种柔性折叠面板,其特征在于,包括如权利要求1中所述的聚合物薄膜。
3.一种根据权利要求1所述的聚合物薄膜的制备方法,其特征在于,所述聚合物薄膜的制备方法通过如下步骤制备:
S100:将双(3-溴-4-异氰酸根合苯基)甲烷与添加物混合反应,并制备聚合物单体,所述添加物为4-己基萘胺或10-氨基-9-辛基蒽;
S101:将所述聚合物单体与乙二酸反应,制备聚合物;
S102:将所述聚合物涂布在衬底上,形成聚合物薄膜。
4.根据权利要求3所述的聚合物薄膜的制备方法,其特征在于,所述聚合物单体为:N,N'-(亚甲基双(6-异氰酸根合-1,3-亚苯基))双(4-己基萘-1-胺)或N,N'-(亚甲基双(6-异氰酸根合-1,3-亚苯基))双(10-辛基蒽-9-胺)。
5.根据权利要求3所述的聚合物薄膜的制备方法,其特征在于,所述添加物为4-己基萘胺,所述步骤S100具体为:
S200:将双(3-溴-4-异氰酸根合苯基)甲烷和4-己基萘胺加入烧瓶中,并加入碳酸铯、碘化亚铜以及18-冠-6;
S201:在所述烧瓶中,通入氩气,并加入除氧的N,N-二甲基丙烯基脲,以形成混合物,将所述混合物置于180℃反应24小时;
S202:将所述烧瓶冷却至室温,倒入冰水,用二氯甲烷萃取三次,将有机相合并,加入硅胶,除去溶剂,柱层析进行分离,得到所述聚合物单体。
6.根据权利要求4所述的聚合物薄膜的制备方法,其特征在于,所述步骤S101具体为:
S300:将N,N'-(亚甲基双(6-异氰酸根合-1,3-亚苯基))双(4-己基萘-1-胺)和乙二酸混合加入烧瓶中,通入氩气并加入稀盐酸,于80℃反应12小时;
S301:用甲醇沉降,得到白色固体并依次在正己烷、丙酮中抽提两天,得到所述聚合物。
7.根据权利要求3所述的聚合物薄膜的制备方法,其特征在于,所述添加物为10-氨基-9-辛基蒽,所述步骤S100具体为:
S400:将双(3-溴-4-异氰酸根合苯基)甲烷和10-氨基-9-辛基蒽加入烧瓶中,并加入碳酸铯、碘化亚铜以及18-冠-6;
S401:在所述烧瓶中,通入氩气,并加入除氧的N,N-二甲基丙烯基脲,混合物置于180℃反应24小时;
S402:将所述烧瓶冷却至室温,倒入冰水,用二氯甲烷萃取三次,将有机相合并,加入硅胶,除去溶剂,柱层析进行分离,得到所述聚合物单体。
8.根据权利要求4所述的聚合物薄膜的制备方法,其特征在于,所述步骤S101具体为:
S500:将N,N'-(亚甲基双(6-异氰酸根合-1,3-亚苯基))双(10-辛基蒽-9-胺)和乙二酸混合加入烧瓶中,通入氩气并加入稀盐酸,于80℃反应12小时;
S501:用甲醇沉降,得到白色固体并依次在正己烷、丙酮中抽提两天,得到所述聚合物。
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