CN111234742B - 一种防蓝光oca光学胶 - Google Patents
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Abstract
本发明公开了一种防蓝光OCA光学胶，按照重量份数计，包括丙烯酸酯系胶黏剂100份、交联剂0.1‑2份、硅烷偶联剂0.05‑2份、抗氧化剂0.01‑0.5份、防蓝助剂0.05‑0.5份，其中，丙烯酸系胶黏剂的重均分子量范围为100万~200万,玻璃化温度为‑60~‑30℃；抗氧化剂选自对苯二胺类抗氧剂、亚磷酸酯类抗氧剂中的至少一种；防蓝助剂选自酮类防蓝助剂、钨酸盐类防蓝助剂中的至少一种。该光学胶在具有良好的粘结性能的同时具有防蓝光的作用，对370nm‑450nm蓝光波段的过滤率达95%以上，能够很好地保护眼睛的健康。
Description
技术领域
本发明涉及高分子材料技术领域，具体涉及一种防蓝光OCA光学胶。
背景技术
近年来，随着社会的发展，电子产品的使用越来越普及，人们在日常工作和生活当中几乎都离不开电脑、手机等电子产品的使用。光学胶(OCA)在各类电子产品的显示屏内扮演着重要的角色。而电子产品在使用时，其LED灯所发出的光中包含有对人体伤害非常大的蓝光，蓝光指波长为380nm～480nm的高能量光，其可以穿透晶状体到达视网膜，使视网膜色素的上皮细胞衰亡，导致光敏感细胞缺少养分，从而引起不可逆的视力损伤，并且蓝光在遇到空气中的细小粒子时散射几率较高，容易产生眩光，对人眼造成巨大的伤害。如何解决上述技术问题，是本领域技术人员致力于解决的事情。
发明内容
本发明的目的是克服现有技术的不足，提供一种防蓝光OCA光学胶，该光学胶在具有优异的粘接性能的同时，能够阻隔370nm～450nm波长的蓝光，减少了蓝光对视网膜的损坏。
为达到上述目的，本发明采用的技术方案是：一种防蓝光OCA光学胶，按照重量份数计，包括丙烯酸酯系胶黏剂100份、交联剂0.1-2份、硅烷偶联剂0.05-2份、抗氧化剂0.01-0.5份、防蓝助剂0.05-0.5份，其中，丙烯酸系胶黏剂的重均分子量范围为100万～200万,玻璃化温度为-60～-30℃；抗氧化剂选自对苯二胺类抗氧剂、亚磷酸酯类抗氧剂中的至少一种；防蓝助剂选自酮类防蓝助剂、钨酸盐类防蓝助剂中的至少一种。
优选地，所述交联剂选自异氰酸酯交联剂和环氧交联剂中的至少一种。
优选地，所述酮类防蓝助剂选用了苯并咪唑酮类颜料，所述钨酸盐类防蓝助剂选自稀土离子改性的钒钨酸盐、稀土离子改性的钼钨酸盐中的至少一种。
优选地，丙烯酸系胶黏剂按照重量份数计，由以下组分组成：甲基丙烯酸月桂酯30-60份、醋酸乙烯酯30-50份、甲基丙烯酸3-10份、偶氮二异丁腈0.1-5份、乙酸乙酯100-150份。
作为一种具体的实施方式，丙烯酸系胶黏剂按照重量份数计，由以下组分组成：甲基丙烯酸月桂酯40-55份、醋酸乙烯酯35-50份、甲基丙烯酸4-8份、偶氮二异丁腈0.5-3份、乙酸乙酯100-120份。
作为一种具体的实施方式，按照重量份数计，包括丙烯酸酯系胶黏剂100份、交联剂0.1-1.5份、硅烷偶联剂0.05-1.6份、抗氧化剂0.04-0.4份、防蓝助剂0.2-0.4份。
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优点：本发明的防蓝光OCA光学胶，其通过调整各组分的配比，使得该光学胶具有优异的粘结性能，同时通过添加防蓝助剂，能够使该光学胶具有防蓝光的作用，对370nm-450nm蓝光波段的过滤率达95％以上，能够很好地保护眼睛的健康。
具体实施方式
下面结合具体实施例来对本发明的技术方案作进一步的阐述。
一种防蓝光OCA光学胶，按照重量份数计，包括丙烯酸酯系胶黏剂100份、交联剂0.1-2份、硅烷偶联剂0.05-2份、抗氧化剂0.01-0.5份、防蓝助剂0.05-0.5份，其中，丙烯酸系胶黏剂的重均分子量范围为100万～200万,玻璃化温度为-60～-30℃。交联剂选自异氰酸酯交联剂和环氧交联剂中的至少一种。抗氧化剂选自对苯二胺类抗氧剂、亚磷酸酯类抗氧剂中的至少一种；防蓝助剂选自酮类防蓝助剂、钨酸盐类防蓝助剂中的至少一种，酮类防蓝助剂选用了苯并咪唑酮类颜料，所述钨酸盐类防蓝助剂选自稀土离子改性的钒钨酸盐、稀土离子改性的钼钨酸盐中的至少一种。
这里，该丙烯酸系胶黏剂采用了以下配方制得：按照重量份数计，由以下组分组成，甲基丙烯酸月桂酯30-60份、醋酸乙烯酯30-50份、甲基丙烯酸3-10份、偶氮二异丁腈0.1-5份、乙酸乙酯100-150份。优选地，该丙烯酸系胶黏剂按照重量份数计，由以下组分组成：甲基丙烯酸月桂酯40-55份、醋酸乙烯酯35-50份、甲基丙烯酸4-8份、偶氮二异丁腈0.5-3份、乙酸乙酯100-120份。
作为一种优选方式，该防蓝光OCA光学胶，按照重量份数计，包括丙烯酸酯系胶黏剂100份、交联剂0.1-1.5份、硅烷偶联剂0.05-1.6份、抗氧化剂0.04-0.4份、防蓝助剂0.2-0.4份。
实施例1
一种防蓝光OCA光学胶，按照重量份数计，包括丙烯酸酯系胶黏剂100份、异氰酸酯交联剂0.1份、硅烷偶联剂1份、对苯二胺类抗氧剂0.05份。该丙烯酸酯系胶黏剂按照重量份数计，由以下组分组成：甲基丙烯酸月桂酯30份、醋酸乙烯酯50份、甲基丙烯酸6份、偶氮二异丁腈1份、乙酸乙酯100份。
本例中，在其他组分相同的情况下，分别添加苯并咪唑酮类颜料0.04份、0.05份、0.1份、0.2份、0.3份、0.4份、0.5份、0.6份，经测试，在GB/T2410-2008标准下，该胶水的透光度分别为88％、90％、90％、91％、92％、91％、90％、89％，雾度分别为1.1％、1.0％、1.0％、0.9％、0.8％、0.8％、0.9％、1.1％，蓝光的阻断率分别为92％、95％、95.5％、98％、98.5％、99.5％、96％、92％。由此，我们可知，防蓝助剂的添加量在0.05-0.5份间，其产品的透光度较好，蓝光阻断率较高，特别是添加量在0.2-0.4份之间时，蓝光阻断率最好。
实施例2
本例中提供一种丙烯酸系胶黏剂，按照重量份数计，由以下组分组成：甲基丙烯酸月桂酯50份、醋酸乙烯酯45份、甲基丙烯酸6份、偶氮二异丁腈2.5份、乙酸乙酯120份。
一种防蓝光OCA光学胶，按照重量份数计，包括上述丙烯酸酯系胶黏剂100份、防蓝助剂0.4份，其交联剂、硅烷偶联剂的添加量见下表。
表1
| 2-1 | 2-2 | 2-3 | 2-4 | 2-5 | 2-6 | 2-7 | 2-8 | |
| 丙烯酸系胶黏剂 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
| 异氰酸酯交联剂 | 0.1 | 0.2 | 0.5 | 0.5 | 1.0 | 0.5 | 1 | 0.7 |
| 环氧交联剂 | 0 | 0.3 | 0.5 | 0.5 | 0.5 | 1.0 | 1 | 0.8 |
| 硅烷偶联剂 | 0.05 | 0.1 | 0.2 | 2.0 | 1.6 | 0.5 | 0.8 | 0.3 |
| 对苯二胺类抗氧剂 | 0.1 | 0.1 | 0.04 | 0.1 | 0.4 | 0.01 | 0.5 | 0.3 |
| 防蓝助剂 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 |
| 粘着力(N/25mm) | 22 | 20 | 19 | 19 | 17 | 17 | 15 | 16 |
根据表1中的各实施例的配方制得OCA光学胶，并通过以下步骤来制备光学胶制品：首先，使用刮刀在PET离型膜(厚度为50μm)的表面涂抹一层由表1中的各实施例制成的光学胶涂层(干胶厚度为50μm)；随后，离型膜放置在温度90度的烘箱中，放置3分钟使溶剂挥发，得到干膜。
根据GB/T2792-1998对上述光学胶制品进行粘着力的测试，测试结果见表1，从表1中，我们可以看出，上述配方制得的OCA光学胶，其具有良好的粘着性能。
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据以实施，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之内。
Claims (3)
1.一种防蓝光OCA光学胶，其特征在于，按照重量份数计，包括丙烯酸酯系胶黏剂100份、异氰酸酯交联剂0.1份、硅烷偶联剂0.05-2份、抗氧化剂0.01-0.5份、防蓝助剂0.4份，其中，丙烯酸系胶黏剂的重均分子量范围为100万~200万,玻璃化温度为-60~-30℃；抗氧化剂选自对苯二胺类抗氧剂；防蓝助剂选自苯并咪唑酮类颜料, 丙烯酸系胶黏剂按照重量份数计，由以下组分组成：甲基丙烯酸月桂酯30-60份、醋酸乙烯酯30-50份、甲基丙烯酸3-10份、偶氮二异丁腈0.1-5份、乙酸乙酯100-150份。
2.根据权利要求1所述的防蓝光OCA光学胶，其特征在于，按照重量份数计，包括丙烯酸酯系胶黏剂100份、异氰酸酯交联剂0.1份、硅烷偶联剂1份、抗氧化剂0.05份、防蓝助剂0.4份，其中，丙烯酸系胶黏剂按照重量份数计，由以下组分组成：甲基丙烯酸月桂酯30份、醋酸乙烯酯50份、甲基丙烯酸6份、偶氮二异丁腈1份、乙酸乙酯100份。
3.根据权利要求1所述的防蓝光OCA光学胶，其特征在于，按照重量份数计，包括丙烯酸酯系胶黏剂100份、异氰酸酯交联剂0.1份、硅烷偶联剂0.05份、抗氧化剂0.1份、防蓝助剂0.4份，其中，丙烯酸系胶黏剂按照重量份数计，由以下组分组成：甲基丙烯酸月桂酯50份、醋酸乙烯酯45份、甲基丙烯酸6份、偶氮二异丁腈2.5份、乙酸乙酯120份。
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