CN112143406A - 一种反光膜用丙烯酸压敏胶带及其制备方法 - Google Patents
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Abstract
本发明提供一种反光膜用丙烯酸压敏胶带及其制备方法,由以下重量份数的原料制备而成:醋酸乙烯酯30‑34份、丙烯酸正丁酯40‑50份、丙烯酸异辛酯130‑140份、乙酸乙烯酯50‑60份、乙酸乙酯45‑50份、带水剂30‑35份、引发剂4‑7份、交联剂10‑15份、链转移剂0.5‑1.2份。本发明提出一种反光膜用丙烯酸压敏胶带及其制备方法,综合性能优异,并且完全满足反光膜的使用要求,克服了现有的缺点。
Description
技术领域
本发明涉及压敏胶技术领域,具体涉及一种反光膜用丙烯酸压敏胶带及其制备方法。
背景技术
压敏胶带是一种特殊类型的胶带,将一种特殊胶粘剂(压敏胶)涂于带状基材上制成。由压敏胶、基材、底胶、背面处理剂等构成。压敏胶是压敏胶带最重要的组成部分。其作用是使胶带具有对压力敏感粘附特性。用作基材的主要有织物、塑料薄膜、纸类等。底胶是增加压敏胶与基材的粘结强度。使用时,轻轻加压使胶带与被粘物表面粘结。
压敏胶是一类具有对压力有敏感性的胶粘剂。主要用于制备压敏胶带。随着环保要求的不断提高,溶剂型聚丙烯酸酯类压敏胶的应用领域和用量有所下降,但其在压敏胶行业中仍占有相当重要的地位,主要是由于其具有平均相对分子质量较低、润湿性好、初粘力大、干燥速率快、耐水性好和低温性能佳等诸多优点。因此开发综合性优异的反光膜用丙烯酸压敏胶带及其制备方法是非常重要的。
发明内容
针对现有技术的不足,本发明提出一种反光膜用丙烯酸压敏胶带及其制备方法,具有性能优异,制备方法简单等优点。
本发明的技术方案是这样实现的:
一种反光膜用丙烯酸压敏胶带,由以下重量份数的原料制备而成:醋酸乙烯酯30-34份、丙烯酸正丁酯40-50份、丙烯酸异辛酯130-140份、乙酸乙烯酯50-60份、乙酸乙酯45-50份、带水剂30-35份、引发剂4-7份、交联剂10-15份、链转移剂0.5-1.2份。
优选地,由以下重量份数的原料制备而成:醋酸乙烯酯32份、丙烯酸正丁酯42份、丙烯酸异辛酯135份、乙酸乙烯酯55份、乙酸乙酯48份、带水剂32份、引发剂5份、交联剂12份、链转移剂0.7份。
优选地,所述带为水剂环己烷。
优选地,所述引发剂为硫酸铵。
优选地,所述交联剂为丙烯酸羟丙酯。
优选地,所述链转移剂为十二烷基硫醇。
一种反光膜用丙烯酸压敏胶带的制备方法,具体步骤如下:
(1)称取醋酸乙烯酯、丙烯酸正丁酯、丙烯酸异辛酯、乙酸乙烯酯放入反应器中混合均匀后制备得混合单体;
(2)在反应釜中加入步骤(1)中制备的部分混合单体,边搅拌边升温至温度75-80℃;再继续滴加部分引发剂,滴加时间为1h;再滴加剩余的混合单体和剩余的引发剂,保温3-4h,降温冷却得过滤得到无色透明黏稠状胶液备用;
(3)将步骤(2)中制备的无色透明黏稠状胶液均匀涂布在离型纸上,120-130℃干燥2-4min;与PET镀铝膜复合,20-25℃放置1-2h;剥离离型纸后,得到反光膜用丙烯酸压敏胶带。
优选地,所述步骤(2)中在反应釜中加入步骤(1)中制备的1//3重量的混合单体。
优选地,所述步骤(2)中边搅拌边升温至温度75-80℃,搅拌速度为100-120r/min,搅拌时间10-20min。
优选地,所述步骤(2)中再继续滴加1/2重量的引发剂,滴加时间为1h;再滴加剩余的混合单体和剩余的引发剂,保温3-4h,降温冷却得过滤得到无色透明黏稠状胶液备用。
本发明具有以下有益效果:本发明反光膜用丙烯酸压敏胶带,选用醋酸乙烯酯、丙烯酸正丁酯、丙烯酸异辛酯、乙酸乙烯酯为单体、溶剂乙酸乙酯,选用丙烯酸羟丙酯为交联剂,过硫酸铵为引发剂,制备的反光膜用丙烯酸压敏胶带具有较好的综合性能,其初粘力为21#钢球、剥离强度为12.5-12.8N/(25mm)、持粘力较大且附着性较好。
具体实施方式
为了对本发明的技术特征、目的和有益效果有更加清楚的理解,现结合具体实施例对本发明的技术方案进行以下详细说明,应理解这些实例仅用于说明本发明而不用于限制本发明的范围。
实施例1
分别按以下表1中指定的各组分,秤取原料,按照以下步骤制备:
(1)称取醋酸乙烯酯、丙烯酸正丁酯、丙烯酸异辛酯、乙酸乙烯酯放入反应器中混合均匀后制备得混合单体;
(2)在反应釜中加入步骤(1)中制备的1//3重量的混合单体,边搅拌边升温至温度75-80℃,搅拌速度为100-120r/min,搅拌时间10-20min;再继续滴加1/2重量的引发剂,滴加时间为1h;再滴加剩余的混合单体和剩余的引发剂,保温3-4h,降温冷却得过滤得到无色透明黏稠状胶液备用;
(3)将步骤(2)中制备的无色透明黏稠状胶液均匀涂布在离型纸上,120-130℃干燥2-4min;与PET镀铝膜复合,20-25℃放置1-2h;剥离离型纸后,得到反光膜用丙烯酸压敏胶带。
对其进行性能指标检验。在表2中列出了测试结果。
实施例2
按以下表1中指定的各组分含量重复实施例1的方法,在表2中列出了测试结果。
实施例3
按以下表1中指定的各组分含量重复实施例1的方法,在表2中列出了测试结果。
对比例1
按以下表1中指定的各组分含量重复实施例1的方法,在表2中列出了测试结果。
对比例2
按以下表1中指定的各组分含量重复实施例1的方法,在表2中列出了测试结果。
对比例3
按以下表1中指定的各组分含量重复实施例1的方法,在表2中列出了测试结果。
表1
一、性能测试
本发明反光膜用丙烯酸压敏胶带的黏度:采用旋转黏度计进行测定(4#号转子,转速12r/min);固含量测定按GB/T2793-1995标准进行测试;初粘力测定按照GB/T4852-2002标准;持粘力测定按GB4851-1998测定;附着性测定按照GB/T 18833-2002标准进行测定;180°剥离强度测定按GB4851-1998测定,结果如表2所示。
表2
由表2可知,与对比例1-3所制备的反光膜用丙烯酸压敏胶带相比,本发明实施例1-3制备的反光膜用丙烯酸压敏胶带具有较好的综合性能,其初粘力为21#钢球、剥离强度为12.5-12.8N/(25mm)、持粘力较大且附着性较好。
以上实施例对本发明的产品及方法进行了详细介绍,本文中应用了具体例对本发明的主要步骤及实施方式进行了阐述,上述实施例只是帮助理解本发明的方法及核心原理。对于本领域的技术人员,依据本发明的核心原理,在具体实施中会对各条件和参数根据需要而变动,综上所述,本说明书不应理解为对本发明的限制。
Claims (10)
1.一种反光膜用丙烯酸压敏胶带,其特征在于:由以下重量份数的原料制备而成:醋酸乙烯酯30-34份、丙烯酸正丁酯40-50份、丙烯酸异辛酯130-140份、乙酸乙烯酯50-60份、乙酸乙酯45-50份、带水剂30-35份、引发剂4-7份、交联剂10-15份、链转移剂0.5-1.2份。
2.根据权利要求1所述的反光膜用丙烯酸压敏胶带,其特征在于:由以下重量份数的原料制备而成:醋酸乙烯酯32份、丙烯酸正丁酯42份、丙烯酸异辛酯135份、乙酸乙烯酯55份、乙酸乙酯48份、带水剂32份、引发剂5份、交联剂12份、链转移剂0.7份。
3.根据权利要求1所述的反光膜用丙烯酸压敏胶带,其特征在于:所述带为水剂环己烷。
4.根据权利要求1所述的反光膜用丙烯酸压敏胶带,其特征在于:所述引发剂为硫酸铵。
5.根据权利要求1所述的反光膜用丙烯酸压敏胶带,其特征在于:所述交联剂为丙烯酸羟丙酯。
6.根据权利要求1所述的反光膜用丙烯酸压敏胶带,其特征在于:所述链转移剂为十二烷基硫醇。
7.根据权利要求1-6所述的反光膜用丙烯酸压敏胶带的制备方法,其特征在于:具体步骤如下:
(1)称取醋酸乙烯酯、丙烯酸正丁酯、丙烯酸异辛酯、乙酸乙烯酯放入反应器中混合均匀后制备得混合单体;
(2)在反应釜中加入步骤(1)中制备的部分混合单体,边搅拌边升温至温度75-80℃;再继续滴加部分引发剂,滴加时间为1h;再滴加剩余的混合单体和剩余的引发剂,保温3-4h,降温冷却得过滤得到无色透明黏稠状胶液备用;
(3)将步骤(2)中制备的无色透明黏稠状胶液均匀涂布在离型纸上,120-130℃干燥2-4min;与PET镀铝膜复合,20-25℃放置1-2h;剥离离型纸后,得到反光膜用丙烯酸压敏胶带。
8.根据权利要求7所述的反光膜用丙烯酸压敏胶带的制备方法,其特征在于:所述步骤(2)中在反应釜中加入步骤(1)中制备的1//3重量的混合单体。
9.根据权利要求7所述的反光膜用丙烯酸压敏胶带的制备方法,其特征在于:所述步骤(2)中边搅拌边升温至温度75-80℃,搅拌速度为100-120r/min,搅拌时间10-20min。
10.根据权利要求7所述的反光膜用丙烯酸压敏胶带的制备方法,其特征在于:所述步骤(2)中再继续滴加1/2重量的引发剂,滴加时间为1h;再滴加剩余的混合单体和剩余的引发剂,保温3-4h,降温冷却得过滤得到无色透明黏稠状胶液备用。
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