CN111562694A - 一种电控调光膜 - Google Patents

一种电控调光膜 Download PDF

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CN111562694A
CN111562694A CN202010510054.8A CN202010510054A CN111562694A CN 111562694 A CN111562694 A CN 111562694A CN 202010510054 A CN202010510054 A CN 202010510054A CN 111562694 A CN111562694 A CN 111562694A
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liquid crystal
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metal oxide
indium tin
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苏润红
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Hunan Youperth New Material Technology Co ltd
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    • G02FOPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
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Abstract

本发明公开了一种电控调光膜,包括一对PET层以及夹设于一对PET层间的液晶层,PET层为PET薄膜,厚度为160‑200μm,透明度≥95%,收缩率≤1%,液晶层厚度为10‑25μm,由双组份胶水、液晶单体和玻璃微珠制得,双组份胶水由聚氨酯胶粘剂和丙烯酸固化剂制得,双组分胶水和液晶单体质量比为42‑58:34‑46,玻璃微珠粒径为10‑20μm,在液晶层中质量占比为2‰‑14‰,液晶层将一对PET层粘接固定,PET层中贴合液晶层一面上镀有纳米铟锡金属氧化物层,纳米铟锡金属氧化物层电阻率为90‑110Ω/㎡,能够在36‑60V的工作电压下达到80%以上的平行光通过率,电光特性优异,此外,所需原料种类少且易于获得,工艺简单,生产成本得到降低,有利于产业化,市场前景广阔。

Description

一种电控调光膜
技术领域
本发明涉及光学材料领域,特别涉及一种电控调光膜。
背景技术
液晶调光膜作为一种新型电控光学材料,是指将聚合物分散液晶固化在两层透明导电膜中间,在没有电场作用下的情况下,调光膜处于不透明状态,当通入交流电时,调光膜中的液晶分子发生偏转,调光膜变为透明,实现调光性能。液晶调光膜是制作调光玻璃的和新材料,应用广泛,通常被应用在建筑外墙、房产装饰、汽车玻璃、汽车后视镜、投影幕墙、办公场所、公共娱乐设施等领域,具备隐私保护性、空间通透性、安全防务性和光线调节性等优秀特质。
现有技术中电控调光膜的工业生产,技术难度大,生产成本高,各种电控调光膜虽然工作原理大致相同,但原料配方和生产工艺差异较大,因此产品质量和功能特性各有不同,其中普遍存在着柔韧度低易损坏、驱动电压高耗能大、透光性能欠佳或衰败严重的问题,严重制约着电控调光膜的技术发展和市场推广。
发明内容
为了克服上述现有技术的不足,本发明提供了一种电光特性优异、驱动电压低和易于生产的电控调光膜。
为达到上述目的,本发明解决其技术问题所采用的技术方案是:一种电控调光膜,包括一对PET层以及夹设于一对PET层间的液晶层,所述PET层为PET薄膜,厚度为160-200μm,所述液晶层厚度为10-25μm,由双组份胶水、液晶单体和玻璃微珠制得,所述双组份胶水由聚氨酯胶粘剂和丙烯酸固化剂制得,所述液晶层将一对PET层粘接固定,所述PET层中贴合液晶层一面上镀有纳米铟锡金属氧化物层,所述PET层边缘设有接电端。
作为优选,所述PET层透明度≥95%,收缩率≤1%。
作为优选,所述双组分胶水和液晶单体质量比为42-58:34-46。
作为优选,所述玻璃微珠粒径为10-20μm,在液晶层中质量占比为2‰-14‰。
作为优选,所述纳米铟锡金属氧化物层电阻率为90-110Ω/㎡。
作为优选,所述纳米铟锡金属氧化物层上蚀刻有线路形成图案,用于电控调光膜通电呈现画面。
作为优选,所述电控调光膜工作电压为36-60V。
作为优选,所述电控调光膜的生产工艺包括以下步骤:
A.选用符合上述要求的PET膜进行预处理,通过磁控溅射法在PET膜一面镀上纳米铟锡金属氧化物层,并在纳米铟锡金属氧化物层上蚀刻出预设线路;
B.按上述比例配置双组份胶水、液晶单体和玻璃微珠,混合搅拌18-30h得到胶状混合物;
C.使两张PET膜的纳米铟锡金属氧化物层所在面平行正对,留出10-25μm间距,设置挡板将两张PET膜两侧间隙密封,从两张PET一端间隙滴涂胶状混合物,将两张PET膜间空隙全部填满,再送入UV灯下照射,使胶状混合物固化,得到电控调光膜。
作为优选,所述步骤C中两张PET膜送入UV灯下行进速度为1-2m/s,UV灯灯管长度为2-3m。
由于上述技术方案的运用,本发明与现有技术相比具有下列有益效果:
本发明能够在36-60V的工作电压下达到80%以上的平行光通过率,电光特性优异,还具备柔韧性良好、节能环保、使用寿命长等优点,此外,本发明所需原料种类少且易于获得,工艺简单,生产成本得到降低,有利于产业化,市场前景广阔。
附图说明
图1是本发明的结构示意图。
图中:1、PET层;2、液晶层;3、纳米铟锡金属氧化物层;4、接电端。
具体实施方式
下面结合具体实施例,对本发明的内容做进一步的详细说明:
如图1所示,本发明是一种电控调光膜,包括一对PET层1以及夹设于一对PET层1间的液晶层2,PET层1为PET薄膜,厚度为160-200μm,透明度≥95%,收缩率≤1%,液晶层2厚度为10-25μm,由双组份胶水、液晶单体和玻璃微珠制得,双组份胶水由聚氨酯胶粘剂和丙烯酸固化剂制得,双组分胶水和液晶单体质量比为42-58:34-46,玻璃微珠粒径为10-20μm,在液晶层2中质量占比为2‰-14‰,液晶层2将一对PET层1粘接固定,PET层1中贴合液晶层2一面上镀有纳米铟锡金属氧化物层3,纳米铟锡金属氧化物层3电阻率为90-110Ω/㎡,PET层1边缘设有接电端4,电控调光膜工作电压为36-60V。
其中,纳米铟锡金属氧化物层3上蚀刻有预设线路形成定制图案,如花纹、格栅、文字和图像等,于电控调光膜通电为透明状态时呈现出相应画面,增强了美观装饰效果,具有标注指示甚至广告宣传的功能,提升了商业价值。
本发明经检测能够在36-60V的工作电压下达到80%以上的平行光通过率,电光特性优异,还具备柔韧性良好、节能环保、使用寿命长等优点,此外,本发明所需原料种类少且易于获得,工艺简单,生产成本得到降低,有利于产业化,市场前景广阔。
本发明的工作原理是:PET层1表面镀上纳米铟锡金属氧化物层3,形成柔性ITO透明导电薄膜,液晶层2将一对柔性ITO透明导电薄膜粘接,双组份胶水中各种有机高分子、液晶单体和玻璃微珠经过长时间搅拌形成混合分散体系,经紫外线照射后液晶单体均匀分布固化于其中,取向分散的液晶单体使入射光散射,电控调光膜处于不透明态,从接电端4通电,液晶单体在电场作用下发生偏转,沿电场方向有序排列,使入射光透射,电控调光膜处于透明态,因而实现了透明状态的电控切换。
实施例一
按照以下步骤生产电控调光膜:
A.选用厚度为180μm、透明度≥95%、收缩率为0.3%-0.5%的PET膜进行预处理,通过磁控溅射法在PET膜一面镀上纳米铟锡金属氧化物层3,并在纳米铟锡金属氧化物层3上蚀刻出预设线路;
B.配置双组份胶水、液晶单体和玻璃微珠,双组份胶水和液晶单体质量比为50:40,玻璃微珠占三者总质量的5‰,混合搅拌24h得到胶状混合物;
C.使两张PET膜的纳米铟锡金属氧化物层3所在面平行正对,留出20μm间距,设置挡板将两张PET膜两侧间隙密封,从两张PET一端间隙滴涂胶状混合物,将两张PET膜间空隙全部填满,再以1m/s的行进速度送入UV灯灯管下照射,使胶状混合物固化,得到电控调光膜。
制得的电控调光膜雾感强烈,通电后变为透明,经测定平行光通过率≥88%,呈现图案非常清晰。
具体实施例如下:
实施例二
按照以下步骤生产电控调光膜:
A.选用厚度为160μm、透明度≥95%、收缩率为0.8%-1%的PET膜进行预处理,通过磁控溅射法在PET膜一面镀上纳米铟锡金属氧化物层3,并在纳米铟锡金属氧化物层3上蚀刻出预设线路;
B.配置双组份胶水、液晶单体和玻璃微珠,双组份胶水和液晶单体质量比为48:38,玻璃微珠占三者总质量的10‰,混合搅拌30h得到胶状混合物;
C.使两张PET膜的纳米铟锡金属氧化物层3所在面平行正对,留出18μm间距,设置挡板将两张PET膜两侧间隙密封,从两张PET一端间隙滴涂胶状混合物,将两张PET膜间空隙全部填满,再以1.5m/s的行进速度送入UV灯灯管下照射,使胶状混合物固化,得到电控调光膜。
制得的电控调光膜雾感非常强烈,通电后变为透明,经测定平行光通过率≥85%,呈现图案清晰。
实施例三
按照以下步骤生产电控调光膜:
A.选用厚度为200μm、透明度≥95%、收缩率为0.5-0.8%的PET膜进行预处理,通过磁控溅射法在PET膜一面镀上纳米铟锡金属氧化物层3,并在纳米铟锡金属氧化物层3上蚀刻出预设线路;
B.配置双组份胶水、液晶单体和玻璃微珠,双组份胶水和液晶单体质量比为55:42,玻璃微珠占三者总质量的8‰,混合搅拌18h得到胶状混合物;
C.使两张PET膜的纳米铟锡金属氧化物层3所在面平行正对,留出15μm间距,设置挡板将两张PET膜两侧间隙密封,从两张PET一端间隙滴涂胶状混合物,将两张PET膜间空隙全部填满,再以2m/s的行进速度送入UV灯灯管下照射,使胶状混合物固化,得到电控调光膜。
制得的电控调光膜雾感比较强烈,通电后变为透明,经测定平行光通过率≥82%,呈现图案比较清晰。
上述实施例只为说明本发明的技术构思及特点,其目的在于让熟悉此项技术的人士能够了解本发明的内容并加以实施,并不能以此限制本发明的保护范围,凡根据本发明精神实质所作的等效变化或修饰,都应涵盖在本发明的保护范围内。

Claims (9)

1.一种电控调光膜,其特征在于:包括一对PET层以及夹设于一对PET层间的液晶层,所述PET层为PET薄膜,厚度为160-200μm,所述液晶层厚度为10-25μm,由双组份胶水、液晶单体和玻璃微珠制得,所述双组份胶水由聚氨酯胶粘剂和丙烯酸固化剂制得,所述液晶层将一对PET层粘接固定,所述PET层中贴合液晶层一面上镀有纳米铟锡金属氧化物层,所述PET层边缘设有接电端。
2.根据权利要求1所述的一种电控调光膜,其特征在于:所述PET层透明度≥95%,收缩率≤1%。
3.根据权利要求2所述的一种电控调光膜,其特征在于:所述双组分胶水和液晶单体质量比为42-58:34-46。
4.根据权利要求3所述的一种电控调光膜,其特征在于:所述玻璃微珠粒径为10-20μm,在液晶层中质量占比为2‰-14‰。
5.根据权利要求4所述的一种电控调光膜,其特征在于:所述纳米铟锡金属氧化物层电阻率为90-110Ω/㎡。
6.根据权利要求5所述的一种电控调光膜,其特征在于:所述纳米铟锡金属氧化物层上蚀刻有线路形成图案,用于电控调光膜通电呈现画面。
7.根据权利要求6所述的一种电控调光膜,其特征在于:所述电控调光膜工作电压为36-60V。
8.根据权利要求7所述的一种电控调光膜,其特征在于:所述电控调光膜的生产工艺包括以下步骤:
A.选用符合上述要求的PET膜进行预处理,通过磁控溅射法在PET膜一面镀上纳米铟锡金属氧化物层,并在纳米铟锡金属氧化物层上蚀刻出预设线路;
B.按上述比例配置双组份胶水、液晶单体和玻璃微珠,混合搅拌18-30h得到胶状混合物;
C.使两张PET膜的纳米铟锡金属氧化物层所在面平行正对,留出10-25μm间距,设置挡板将两张PET膜两侧间隙密封,从两张PET一端间隙滴涂胶状混合物,将两张PET膜间空隙全部填满,再送入UV灯下照射,使胶状混合物固化,得到电控调光膜。
9.根据权利要求8所述的一种电控调光膜,其特征在于:所述步骤C中两张PET膜送入UV灯下行进速度为1-2m/s,UV灯灯管长度为2-3m。
CN202010510054.8A 2020-06-08 2020-06-08 一种电控调光膜 Pending CN111562694A (zh)

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CN113568211A (zh) * 2021-07-26 2021-10-29 Oppo广东移动通信有限公司 Pdlc调光膜及其制作方法、电子设备壳体和电子设备

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