CN108084905A - 一种抗静电复合激光膜及其制备方法 - Google Patents
一种抗静电复合激光膜及其制备方法 Download PDFInfo
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Abstract
本发明涉及一种抗静电复合激光膜及其制备方法,本抗静电复合激光膜包括:激光膜本体;所述激光膜本体的一表面设置有抗静电涂层,其另一表面设置有复膜胶层;本发明采用复合结构,即一面为抗静电涂层,另一面为复合胶层;因此,具有较好的抗静电性能,能显著降低膜产品表面电阻,使其达到10 的七次方到八次方欧姆,抗静电效果迅速、优良,克服了现有技术物理式去除静电方法的去静电效果差的缺陷,提高了质量,降低了报废率。
Description
技术领域
本发明涉及一种抗静电复合激光膜及其制备方法。
背景技术
激光膜一般采用计算机点阵光刻技术、3D 真彩色全息技术、多重与动态成像技术等,经模压把具有彩虹动态、三维立体效果的全息图像转移到PET、BOPP、PVC 或带涂层的基材上,然后利用复合、烫印、转移等方式使商品包装表面获得某种激光镭射效果。镭射包装是包装行业中的一个细分行业,近年来取得了快速的发展,与包装行业内的其他产品相比,镭射包装材料不仅具有新颖、亮丽的外观效果,同时还具有高技术防伪功能,被称为世界包装印刷业中最前沿的技术产品。目前镭射材料的应用领域已经非常广泛,在食品、药品、日化用品、烟酒、服装、礼品包装以及装饰材料等行业都得到较快的推广。
激光膜在镀铝时,如果膜表面有静电就会干扰铝层的附着力,从而产生静电纹,导致产品报废。如何有效的去除镀铝前膜表面的静电已成为困扰整个镀铝行业的难题。
发明内容
本发明的目的是提供一种抗静电复合激光膜及其制备方法。
为了解决上述技术问题,本发明提供了一种复合激光膜,包括:
激光膜本体;
所述激光膜本体的一表面设置有抗静电涂层,其另一表面设置有复膜胶层。
进一步,所述抗静电涂层包括下列质量份数的物质:
聚乙烯醇 5~15份;
导电聚合物溶液 8~12份;
硼砂 0.15~1份;
流平剂 0.1~0.8份。
进一步,所述复膜胶层包括下列质量份数的物质:
丙烯酸丁酯 10~15份;
丙烯酸异辛酯 5~12份;
苯乙烯 8~18份;
功能单体 0.4~0.8份;
复合乳化剂 1~6份;以及
引发剂 0.2~1.2份。
进一步,所述复合乳化剂包括:阴离子型乳化剂和非离子型乳化剂;其中
所述阴离子型乳化剂为十二烷基硫酸钠;
所述非离子型乳化剂为辛基酚聚氧乙烯醚;
十二烷基硫酸钠和辛基酚聚氧乙烯醚的质量比为1:1.5~3。
又一方面,本发明还提供了一种复合激光膜的制备方法,包括复膜胶层的制备步骤,即制备预乳化液;以及制备复膜胶乳液。
进一步,预乳化液的制备方法包括:
在25℃的去离子水中加入丙烯酸丁酯、丙烯酸异辛酯、苯乙烯、功能单体、复合乳化剂,并且搅拌,以得到乳白色预乳化液。
进一步,复膜胶乳液的制备方法包括:
在一搅拌器中加入一定量的去离子水、引发剂和PH缓冲溶液,搅拌的同时升温至50℃,加入配置好的所述乳白色预乳化液,升温至80℃,待乳白色预乳化液出现淡蓝色后,升温至85℃,再次倒入乳白色预乳化液,在搅拌后保温1小时以上,自然冷却至35~40℃,用氨水调节PH值为6-7,过滤出料。
进一步,所述丙烯酸丁酯按质量份数为10~15份,丙烯酸异辛酯按质量份数为5~12份,苯乙烯按质量份数为8~18份,功能单体按质量份数为0.4~0.8份,复合乳化剂按质量份数为1~6份;以及引发剂按质量份数为0.2~1.2份。
进一步,所述复合乳化剂包括:阴离子型乳化剂和非离子型乳化剂;其中
所述阴离子型乳化剂为十二烷基硫酸钠;
所述非离子型乳化剂为辛基酚聚氧乙烯醚;
十二烷基硫酸钠和辛基酚聚氧乙烯醚的质量比为1:1.5~3。
本发明的有益效果是,本发明采用复合结构,即一面为抗静电涂层,另一面为复合胶层;因此,具有较好的抗静电性能,能显著降低膜产品表面电阻,使其达到10 的七次方到八次方欧姆,抗静电效果迅速、优良,克服了现有技术物理式去除静电方法的去静电效果差的缺陷,提高了质量,降低了报废率。
附图说明
下面结合附图和实施例对本发明进一步说明。
图1是本发明的复合激光膜的结构示意图;
图中:激光膜本体1、抗静电涂层2和复膜胶层3。
具体实施方式
现在结合附图对本发明作进一步详细的说明。这些附图均为简化的示意图,仅以示意方式说明本发明的基本结构,因此其仅显示与本发明有关的构成。
如图1所示,本实施例提供了一种复合激光膜,包括:激光膜本体1;所述激光膜本体的上表面设置有抗静电涂层2,其下表面设置有复膜胶层3。
在本实施例中,所述抗静电涂层的厚度为1-2um,其包括下列质量份数的物质:聚乙烯醇为5~15份;导电聚合物溶液为8~12份;硼砂为0.15~1份;流平剂为0.1~0.8份;以及余量为水。
所述导电聚合物溶液采用聚噻吩(PEDOT);所述流平剂为丙烯酸类流平剂、氟类流平剂的一种或几种。
下面用多个实施例,采用不同的组分及用量(其中用量为质量份数),来说明本发明的抗静电涂层。
实施例1
在电加热反应釜中加入质量份数为100份的水,加入质量份数为5份的聚乙烯醇,在常温下搅拌至少1小时,然后升温至90℃,在90℃温控1小时,降温至80℃,加入质量份数为8份的导电聚合物溶液,重量浓度为5%的硼砂0.15份,保温2小时,降至室温,加入质量份数为0.1份的流平剂,也可以同时按质量份数加入消泡剂0.1份,按质量份数0.5份的无机填料1500目~3000目的碳酸钙或者氧化铝或者二氧化硅,在1200转/分钟高速分散1小时,即得到抗静电涂层,在相对湿度50%时,检测表面电阻率为108.3Ω。
实施例2
在电加热反应釜中加入质量份数为100份的水,加入质量份数为10份的聚乙烯醇,在常温下搅拌2小时,然后升温至95℃,在95℃温控2小时,降温至80℃,加入质量份数为10份的导电聚合物溶液,重量浓度为5%的硼砂0.85份,保温2小时,降至室温,加入质量份数为0.4份的流平剂,也可以同时按质量份数加入消泡剂0.3份,按质量份数0.6份的无机填料1500目~3000目的碳酸钙或者氧化铝或者二氧化硅,在1200转/分钟高速分散1小时,即得到抗静电涂层,检测表面电阻率在108.1Ω。
实施例3
在电加热反应釜中加入质量份数为100份的水,加入质量份数为15份的聚乙烯醇,在常温下搅拌1小时,然后升温至90℃,在90℃温控1小时,降温至80℃,加入质量份数为12份的导电聚合物溶液,重量浓度为5%的硼砂1份,保温2小时,降至室温,加入质量份数为0.8份的流平剂,也可以同时按质量份数加入消泡剂0.5份,按质量份数0.8份的无机填料1500目~3000目的碳酸钙或者氧化铝或者二氧化硅,在1200转/分钟高速分散1小时,即得到抗静电涂层,检测表面电阻率在107.8Ω。
在本实施例中,激光膜本体可以采用双向拉伸聚丙烯薄膜(BOPP)或者双向拉伸聚酯薄膜(BOPET)制备基膜层。
为了避免在BOPET的表面产生了均衡的纵向细条纹,提高涂覆液流平性,避免出现由于BOPET薄膜表面存在一定的排斥性,容易造成无法消除的纵向条纹,通过添加流平剂增加底膜的润湿性,使表面张力趋向平衡,有效的避免在BOPET的表面产生了纵向细条纹,提高涂覆的均匀性。
加入的无机填料能够有效的在涂层表面形成空隙,使薄膜与薄膜之间存在空气,防止形成负压。
下面用多个实施例,采用不同的组分及用量(其中用量为质量份数),来说明本发明的复膜胶层。
实施例4
首先制备预乳化液,即
在25℃的去离子水中加入10份丙烯酸丁酯、5份丙烯酸异辛酯、8份苯乙烯、0.8份功能单体、1份复合乳化剂,并且搅拌,以得到乳白色预乳化液。
所述复合乳化剂包括:阴离子型乳化剂和非离子型乳化剂;其中所述阴离子型乳化剂为十二烷基硫酸钠;所述非离子型乳化剂为辛基酚聚氧乙烯醚;十二烷基硫酸钠和辛基酚聚氧乙烯醚的质量比为1:1.5。
然后进行复膜胶乳液的制备,即
在一搅拌器中加入一定量的去离子水、0.2份引发剂(过硫酸铵)和0.1份PH缓冲溶液(碳酸氢钠),搅拌的同时升温至50℃,加入配置好的所述乳白色预乳化液,升温至80℃,待乳白色预乳化液出现淡蓝色后,升温至85℃,再次倒入乳白色预乳化液,在搅拌后保温1小时以上,自然冷却至35℃,用氨水调节PH值为6-7,过滤出料。
实施例5
首先制备预乳化液,即
在25℃的去离子水中加入13份丙烯酸丁酯、8份丙烯酸异辛酯、13份苯乙烯、0.6份功能单体、6份复合乳化剂,并且搅拌,以得到乳白色预乳化液。
所述复合乳化剂包括:阴离子型乳化剂和非离子型乳化剂;其中所述阴离子型乳化剂为十二烷基硫酸钠;所述非离子型乳化剂为辛基酚聚氧乙烯醚;十二烷基硫酸钠和辛基酚聚氧乙烯醚的质量比为1:3。
然后进行复膜胶乳液的制备,即
在一搅拌器中加入一定量的去离子水、0.6份引发剂(过硫酸铵)和0.2份PH缓冲溶液(碳酸氢钠),搅拌的同时升温至50℃,加入配置好的所述乳白色预乳化液,升温至80℃,待乳白色预乳化液出现淡蓝色后,升温至85℃,再次倒入乳白色预乳化液,在搅拌后保温1小时以上,自然冷却至35℃,用氨水调节PH值为6-7,过滤出料。
实施例6
首先制备预乳化液,即
在25℃的去离子水中加入15份丙烯酸丁酯、12份丙烯酸异辛酯、18份苯乙烯、0.4份功能单体、2份复合乳化剂,并且搅拌,以得到乳白色预乳化液。
所述复合乳化剂包括:阴离子型乳化剂和非离子型乳化剂;其中所述阴离子型乳化剂为十二烷基硫酸钠;所述非离子型乳化剂为辛基酚聚氧乙烯醚;十二烷基硫酸钠和辛基酚聚氧乙烯醚的质量比为1: 2。
然后进行复膜胶乳液的制备,即
在一搅拌器中加入一定量的去离子水、0.3份引发剂(过硫酸铵)和0.2份PH缓冲溶液(碳酸氢钠),搅拌的同时升温至50℃,加入配置好的所述乳白色预乳化液,升温至80℃,待乳白色预乳化液出现淡蓝色后,升温至85℃,再次倒入乳白色预乳化液,在搅拌后保温1小时以上,自然冷却至35℃,用氨水调节PH值为6-7,过滤出料。
对于本实施例6中,经过对剥离强度进行检测,按照本实施例各组分的质量配比制备的复合膜层的剥离强度最高(为4.7N/25mm)。
本实施例的复膜胶层,共聚物中引入适量的硬单体,能够实现软、硬单体的性能互补,使胶粘剂内聚力大幅提高,同时产品复膜后抗蠕变性能明显提升;然而,硬单体用量过多时会快速降低胶粘剂对薄膜的亲合力,此时可调节软、硬单体的配比,使乳液本身的黏附力和内聚力得到平衡。
另外,该复膜胶层的一面是非极性的激光膜本体,另一面是极性很强的纸张表层,两者界面极性相差很大。通过加入少量功能单体调节共聚物的极性,可赋予其自交联特性,故胶膜的耐水性和附着力得到改善,乳液的稳定性及胶膜的内聚力等明显提高,进而提高了复合胶胶膜的内聚强度,改善复合后制品的后加工性能。
以上述依据本发明的理想实施例为启示,通过上述的说明内容,相关工作人员完全可以在不偏离本项发明技术思想的范围内,进行多样的变更以及修改。本项发明的技术性范围并不局限于说明书上的内容,必须要根据权利要求范围来确定其技术性范围。
Claims (9)
1.一种复合激光膜,其特征在于,包括:
激光膜本体;
所述激光膜本体的一表面设置有抗静电涂层,其另一表面设置有复膜胶层。
2.根据权利要求1所述的复合激光膜,其特征在于,
所述抗静电涂层包括下列质量份数的物质:
聚乙烯醇 5~15份;
导电聚合物溶液 8~12份;
硼砂 0.15~1份;
流平剂 0.1~0.8份。
3.根据权利要求1所述的复合激光膜,其特征在于,
所述复膜胶层包括下列质量份数的物质:
丙烯酸丁酯 10~15份;
丙烯酸异辛酯 5~12份;
苯乙烯 8~18份;
功能单体 0.4~0.8份;
复合乳化剂 1~6份;以及
引发剂 0.2~1.2份。
4.根据权利要求3所述的复合激光膜,其特征在于,
所述复合乳化剂包括:阴离子型乳化剂和非离子型乳化剂;其中
所述阴离子型乳化剂为十二烷基硫酸钠;
所述非离子型乳化剂为辛基酚聚氧乙烯醚;
十二烷基硫酸钠和辛基酚聚氧乙烯醚的质量比为1:1.5~3。
5.一种复合激光膜的制备方法,其特征在于,包括复膜胶层的制备步骤,即
制备预乳化液;以及
制备复膜胶乳液。
6.根据权利要求5所述的制备方法,其特征在于,
预乳化液的制备方法包括:
在25℃的去离子水中加入丙烯酸丁酯、丙烯酸异辛酯、苯乙烯、功能单体、复合乳化剂,并且搅拌,以得到乳白色预乳化液。
7.根据权利要求6所述的制备方法,其特征在于,
复膜胶乳液的制备方法包括:
在一搅拌器中加入一定量的去离子水、引发剂和PH缓冲溶液,搅拌的同时升温至50℃,加入配置好的所述乳白色预乳化液,升温至80℃,待乳白色预乳化液出现淡蓝色后,升温至85℃,再次倒入乳白色预乳化液,在搅拌后保温1小时以上,自然冷却至35~40℃,用氨水调节PH值为6-7,过滤出料。
8.根据权利要求7所述的制备方法,其特征在于,
所述丙烯酸丁酯按质量份数为10~15份,丙烯酸异辛酯按质量份数为5~12份,苯乙烯按质量份数为8~18份,功能单体按质量份数为0.4~0.8份,复合乳化剂按质量份数为1~6份;以及引发剂按质量份数为0.2~1.2份。
9.根据权利要求8所述的制备方法,其特征在于,
所述复合乳化剂包括:阴离子型乳化剂和非离子型乳化剂;其中
所述阴离子型乳化剂为十二烷基硫酸钠;
所述非离子型乳化剂为辛基酚聚氧乙烯醚;
十二烷基硫酸钠和辛基酚聚氧乙烯醚的质量比为1:1.5~3。
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CN205185468U (zh) * | 2015-10-26 | 2016-04-27 | 启明新材料股份有限公司 | 一种新型防静电bopp薄膜 |
CN107163181A (zh) * | 2017-06-29 | 2017-09-15 | 台昌树脂(佛山)有限公司 | 丙烯酸乳液及其制备方法 |
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