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CN114196280A - 一种提高pet薄膜氧气阻隔性的丙烯酸酯涂料 - Google Patents

一种提高pet薄膜氧气阻隔性的丙烯酸酯涂料 Download PDF

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CN114196280A
CN114196280A CN202111570211.5A CN202111570211A CN114196280A CN 114196280 A CN114196280 A CN 114196280A CN 202111570211 A CN202111570211 A CN 202111570211A CN 114196280 A CN114196280 A CN 114196280A
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白永平
钟文
邓超
殷晓芬
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Wuxi Haite New Material Research Institute Co Ltd
Wuxi Research Institute of New Materials of Harbin Institute of Technology
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Wuxi Haite New Material Research Institute Co Ltd
Wuxi Research Institute of New Materials of Harbin Institute of Technology
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Abstract

本发明公开了一种提高PET薄膜氧气阻隔性的丙烯酸酯涂料，其由如下重量百分比的组分制备而成：硬单体25‑60％，软单体2.5‑12.5％，功能单体1‑20％，引发剂0.2‑1％，溶剂30‑70％。本发明通过硬单体为涂层链段提供刚性，软单体防止涂层出现龟裂，功能单体为二元羧酸，其羧酸基团在高温下不稳定，会脱水形成酸酐，其中的链间酸酐可使分子链形成网状交联结构，一方面极大的限制分子链段的运动，另一方面增加分子链段的相互作用力，减小链段之间的间隙。因此，涂层聚合物的分子链段热运动受到限制，自由体积分数减小，氧气的渗透路径减少或闭塞，氧气的渗透率下降。因而使得本发明的丙烯酸酯涂料行测的涂层实现对氧气良好的阻隔效果。

Description

一种提高PET薄膜氧气阻隔性的丙烯酸酯涂料
技术领域
本发明涉及涂料制备领域，特别是涉及一种提高PET薄膜氧气阻隔性的丙烯酸酯涂料。
背景技术
聚对苯二甲酸乙二醇酯(PET)薄膜以其优异的密封性、透明性、耐高温性和抗拉强度而著称，可满足大多数包装要求。近年来，PET薄膜已成为食品、医药和化妆品领域的重要包装材料。因此对PET薄膜的高性能和新的功能性的需求正在增长，特别是氧气的阻隔性能。
氧气阻隔性是材料阻止氧气渗透的能力，目前存在的氧气阻隔涂料主要是结晶型聚合物，该类型的氧气阻隔虽然能够提供较好的氧气阻隔性能，但是由于高结晶原因，此类涂料普遍存在脆性大，难溶解的特定。在作为涂料使用时，存在涂布适应性差等缺点。
由于涂层具有合成工艺简单、设备要求不高、功能多样，及与基材的良好粘合性，涂层是提高PET薄膜的氧气阻隔性最快捷和最实际的方法之一。
发明内容
了实现上述目标，本发明提供了一种提高PET薄膜氧气阻隔性的丙烯酸酯涂料，其技术方案如下：
一种提高PET薄膜氧气阻隔性的丙烯酸酯涂料，由如下重量百分比的组分制备而成：
硬单体25-60％；
软单体2.5-12.5％；
功能单体1-20％；
引发剂0.2-1％；
溶剂30-70％。
在有一些实施例中，所述的硬单体为甲基丙烯酸甲酯、苯乙烯、丙烯酸异冰片酯、甲基丙烯酸异冰片酯种的一种或几种。
在有一些实施例中，所述软单体为丙烯酸甲酯、丙烯酸乙酯、醋酸乙烯酯、丙烯酸丁酯、丙烯酸异辛酯中的一种或几种。
在有一些实施例中，所述功能单体顺丁烯二酸、顺丁烯二酸酐、反丁烯二酸中的一种或几种。
在有一些实施例中，所述引发剂为过氧化苯酰或偶氮二异丁腈。
在有一些实施例中，所述溶剂为乙酸乙酯、乙酸丙酯、乙酸丁酯、乙二醇、异丙醇、正丁醇、丙酮、丁酮、四氢呋喃、二甲基亚砜、N-甲基吡咯烷酮、2-甲基-4戊酮、环己酮种的一种或几种。
在有一些实施例中，所述丙烯酸酯涂料的重均分子量在60000-300000g/mol。
本发明的有益效果为：
通过硬单体为涂层链段提供刚性，软单体防止涂层出现龟裂，功能单体为二元羧酸，其羧酸基团在高温下不稳定，会脱水形成酸酐，其中的链间酸酐可使分子链形成网状交联结构，一方面极大的限制分子链段的运动，另一方面增加分子链段的相互作用力，减小链段之间的间隙。因此，涂层聚合物的分子链段热运动受到限制，自由体积分数减小，氧气的渗透路径减少或闭塞，氧气的渗透率下降。因而使得本发明的丙烯酸酯涂料行测的涂层实现对氧气良好的阻隔效果。
具体实施方式
下面结合具体实例，进一步阐明本说明。本部分的描述仅是示范性和解释性，不应对本发明的保护范围有任何的限制作用。
实施例1
将25g甲基丙烯酸异冰片酯，12.5g丙烯酸丁酯，1g顺丁烯二酸酐，，0.2g过氧化苯甲酰，61.3g乙酸丙酯聚合得到丙烯酸酯涂料。
将丙烯酸酯涂料涂布在PET基膜上后干燥固化。
实施例2
将60g苯乙烯，2.5g丙烯酸乙酯，6.5g反丁烯二酸，1g偶氮二异丁腈，30g丁酮，聚合得到丙烯酸酯涂料。
将丙烯酸酯涂料涂布在PET基膜上后干燥固化。
实施例3
将30g甲基丙烯酸甲酯，7.5g丙烯酸甲酯，20g顺丁烯二酸，0.5g过氧化苯甲酰，42gN-甲基吡咯烷酮，聚合得到丙烯酸酯涂料。
将丙烯酸酯涂料涂布在PET基膜上后干燥固化。
实施例4
将40g丙烯酸异冰片酯，10g丙烯酸异辛酯，1g顺丁烯二酸酐，0.4g过氧化苯甲酰，48.6g乙酸乙酯聚合得到丙烯酸酯涂料。
将丙烯酸酯涂料涂布在PET基膜上后干燥固化。
实施例5
将45g甲基丙烯酸甲酯，5g丙烯酸甲酯，4g顺丁烯二酸，0.6g过氧化苯甲酰，45.4g丙酮，聚合得到丙烯酸酯涂料。
将丙烯酸酯涂料涂布在PET基膜上后干燥固化。
实施例6
将50g苯乙烯，4g醋酸乙烯酯，8g反丁烯二酸，0.8g过氧化苯甲酰，38.2g二甲基亚砜，聚合得到丙烯酸酯涂料。
将丙烯酸酯涂料涂布在PET基膜上后干燥固化。
性能测试:
对比例1：PET基膜。
对比例2：普通丙烯酸酯涂料涂布在PET薄膜上后干燥固化。
测试方法：
通过压制法经由设备测试各PET薄膜的氧气透过率，氧气透过率单位为cm3/m2·24h·0.1MPa，测试数值越低，表明氧气阻隔能力越强。
测试结果如下表所示：
Figure BDA0003423135710000031
Figure BDA0003423135710000041
从表中结果可见，与PET基膜及普通的丙烯酸酯涂料相比，本发明实施例制备的丙烯酸酯涂料的氧气阻隔效果得到显著提升。
以上所述仅是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下,还可以做出若干改进和润饰，这些改进和润饰也应视为本发明的保护范围。

Claims (7)

1.一种提高PET薄膜氧气阻隔性的丙烯酸酯涂料，其特征在于，所述丙烯酸酯涂料由如下重量百分比的组分制备而成：
硬单体25-60％；
软单体2.5-12.5％；
功能单体1-20％；
引发剂0.2-1％；
溶剂30-70％。
2.如权利要求1所述的的丙烯酸酯涂料，其特征在于，所述的硬单体为甲基丙烯酸甲酯、苯乙烯、丙烯酸异冰片酯、甲基丙烯酸异冰片酯种的一种或几种。
3.如权利要求1所述的丙烯酸酯涂料，其特征在于，所述软单体为丙烯酸甲酯、丙烯酸乙酯、醋酸乙烯酯、丙烯酸丁酯、丙烯酸异辛酯中的一种或几种。
4.如权利要求1所述的丙烯酸酯涂料，其特征在于，所述功能单体为顺丁烯二酸、顺丁烯二酸酐、反丁烯二酸中的一种或几种。
5.如权利要求1所述的丙烯酸酯涂料，其特征在于，所述引发剂为过氧化苯酰或偶氮二异丁腈。
6.如权利要求1所述的丙烯酸酯涂料，其特征在于，所述溶剂为乙酸乙酯、乙酸丙酯、乙酸丁酯、乙二醇、异丙醇、正丁醇、丙酮、丁酮、四氢呋喃、二甲基亚砜、N-甲基吡咯烷酮、2-甲基-4戊酮、环己酮种的一种或几种。
7.如权利要求1所述的丙烯酸酯涂料，其特征在于，所述丙烯酸酯涂料的重均分子量在60000-300000g/mol。
CN202111570211.5A 2021-12-21 2021-12-21 一种提高pet薄膜氧气阻隔性的丙烯酸酯涂料 Pending CN114196280A (zh)

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CN1974206A (zh) * 2006-12-05 2007-06-06 浙江大学 一种超高阻氧性耐蒸煮包装用复合膜的制备方法
CN102382525A (zh) * 2010-08-27 2012-03-21 山东泉林包装有限公司 一种高阻隔聚合物涂布液
CN113604116A (zh) * 2021-09-09 2021-11-05 哈尔滨工业大学无锡新材料研究院 一种高氧气阻隔涂料及其制备方法及其涂布方法
CN113698525A (zh) * 2021-09-09 2021-11-26 哈尔滨工业大学无锡新材料研究院 一种高阻氧涂料
CN113698652A (zh) * 2021-09-09 2021-11-26 哈尔滨工业大学无锡新材料研究院 一种高氧气阻隔涂布膜及其制备方法
CN113698820A (zh) * 2021-09-09 2021-11-26 哈尔滨工业大学无锡新材料研究院 一种高氧气阻隔涂料及制备方法及使用方法

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1974206A (zh) * 2006-12-05 2007-06-06 浙江大学 一种超高阻氧性耐蒸煮包装用复合膜的制备方法
CN102382525A (zh) * 2010-08-27 2012-03-21 山东泉林包装有限公司 一种高阻隔聚合物涂布液
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