CN113858735B - 一种涂层高阻隔pe材料 - Google Patents
一种涂层高阻隔pe材料 Download PDFInfo
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Abstract
本发明公开了一种涂层高阻隔PE材料,从上至下包括第一PE层、内涂层、第二PE层、粘接层、第三PE层,所述第一PE层的厚度占总厚度的20~30%,所述内涂层占总厚度的10~20%,所述第二PE层的厚度占总厚度的20~30%,所述粘接层占总厚度的5~15%,所述第三PE层占总厚度的20~30%。本发明所述的材料具有良好的阻隔性能,本发明通过加入所述的改性填料显著提高了阻隔性能,且本发明采用的均是PE材料,方便与回收利用,回收率高达99%,而采取其他多层材料,回收率则不高于40%,且不便于后续回收处理。
Description
技术领域
本发明涉及包装材料技术领域,具体涉及一种涂层高阻隔PE材料。
背景技术
PE膜是结构最简单的高分子有机化合物,当今世界应用最广泛的高分子材料。PE保护膜以特殊聚乙烯(PE)塑料薄膜为基材,根据密度的不同分为高密度聚乙烯保护膜、中密度聚乙烯和低密度聚乙烯。目前市场上的包装袋大部分是复合材料,如PET/PE,BOPP/PE,PA/PE,KPET/PE或者三层结构PET/PA/PE,BOPP/PA/PE。虽然这些二元或三元复合材料印刷精美,但使用过后很难回收利用。
发明内容
本发明提供一种涂层高阻隔PE材料,所述的材料具有良好的阻隔性能。
本发明解决其技术问题采用以下技术方案:
一种涂层高阻隔PE材料,从上至下包括第一PE层、内涂层、第二PE层、粘接层、第三PE层,所述第一PE层的厚度占总厚度的20~30%,所述内涂层占总厚度的10~20%,所述第二PE层的厚度占总厚度的20~30%,所述粘接层占总厚度的5~15%,所述第三PE层占总厚度的20~30%。
作为一种优选方案,所述材料的总厚度为80~200μm。
作为一种优选方案,所述第二PE层包括:45~60wt%高密度聚乙烯、30~45wt%线性低密度聚乙烯、2~5wt%硬脂酸钙、0.5~1.5wt%增容剂、0.1~0.5wt%十六烷基三甲氧基硅烷。
作为一种优选方案,所述第二PE层包括:56wt%高密度聚乙烯、39.5wt%线性低密度聚乙烯、3.5 wt%硬脂酸钙、0.8 wt%增容剂、0.2 wt%十六烷基三甲氧基硅烷。
作为一种优选方案,所述第三PE层包括:50~65wt%高密度聚乙烯、30~40wt%线性低密度聚乙烯、2~6wt%硬脂酸钙、0.5~2wt%增容剂、0.2~0.5wt%十六烷基三甲氧基硅烷。
作为一种优选方案,所述第三PE层包括:58.7wt%高密度聚乙烯、35wt%线性低密度聚乙烯、5wt%硬脂酸钙、1wt%增容剂、0.3wt%十六烷基三甲氧基硅烷。
作为一种优选方案,所述内涂层通过在第二PE层表面涂覆水性高阻隔改性聚乙烯醇乳液,烘干而成。
作为一种优选方案,所述粘接层通过在第二PE层、第三PE层之间涂覆聚氨酯胶粘剂形成。
作为一种优选方案,所述第一PE层包括:45~60wt%高密度聚乙烯、25~40wt%线性低密度聚乙烯、5~15wt%改性填料、2~5wt%硬脂酸钙、0.8~2wt%增容剂、0.1~0.4wt%十六烷基三甲氧基硅烷。
作为一种优选方案,所述第一PE层包括:53.3wt%高密度聚乙烯、32wt%线性低密度聚乙烯、10 wt%改性填料、3wt%硬脂酸钙、1.5wt%增容剂、0.2wt%十六烷基三甲氧基硅烷。
作为一种优选方案,所述改性填料的制备方法为:
S1、将10~20重量份蒙脱土、8~15重量份二氧化钛、6~10重量份壳聚糖、4~10重量份羟基磷灰石、2~6重量份碳酸钙加入到60~100重量份无水乙醇中,分散均匀,得到填料混合液;
S2、将6~10重量份三乙胺、2~5重量份草酸、0.5~1.5重量份2-溴代异丁酰溴加入到S1制备的填料混合液中,以200~600rpm转速搅拌100~300min,过滤,干燥,得到活化填料;
S3、将0.1~0.5重量份γ-(2,3-环氧丙氧)丙基三甲氧基硅烷、1~3重量份羧甲基纤维素、1~3重量份海藻酸钠加入到10~20重量份无水乙醇中,分散均匀,得到改性液;
S4、将1重量份活化填料加入到4~8重量份改性剂中,以200~600rpm转速搅拌100~300min,过滤,干燥,得到改性填料。
本发明的发明人在大量的研究中发现,采取上述的制备方法制备得到的改性填料能够显著提高所述材料的阻隔性能,且不同改性填料的制备方法制备得到的改性填料对于阻隔性能的提高是不同的,采取本发明所述的改性填料的制备方法制备得到的改性填料相比于其他方法制备的改性填料能够更加显著的提高阻隔性能。
本发明的有益效果:本发明所述的材料具有良好的阻隔性能,本发明通过加入所述的改性填料显著提高了阻隔性能,且本发明采用的均是PE材料,方便与回收利用,回收率高达99%,而采取其他多层材料,回收率则不高于40%,且不便于后续回收处理。
附图说明
图1为本发明结构示意图;
图中标记说明:1、第一PE层;2、内涂层;3、第二PE层;4、粘接层;5、第三PE层。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚,下面将对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
在本发明中,所述的份均为重量份。
在本发明中所述水性高阻隔改性聚乙烯醇乳液购买于海南必凯水性新材料有限公司,牌号F12H。
在本发明中所述的增容剂为杜邦AC 2112。
实施例1
一种涂层高阻隔PE材料,从上至下包括第一PE层、内涂层、第二PE层、粘接层、第三PE层。
所述第一PE层包括:53.3wt%高密度聚乙烯、32wt%线性低密度聚乙烯、10 wt%改性填料、3wt%硬脂酸钙、1.5wt%增容剂、0.2wt%十六烷基三甲氧基硅烷。
所述改性填料的制备方法为:
S1、将14重量份蒙脱土、10重量份二氧化钛、8重量份壳聚糖、8重量份羟基磷灰石、5重量份碳酸钙加入到70重量份无水乙醇中,分散均匀,得到填料混合液;
S2、将8重量份三乙胺、4重量份草酸、1重量份2-溴代异丁酰溴加入到S1制备的填料混合液中,以400rpm转速搅拌200min,过滤,干燥,得到活化填料;
S3、将0.3重量份γ-(2,3-环氧丙氧)丙基三甲氧基硅烷、2重量份羧甲基纤维素、2重量份海藻酸钠加入到15.7重量份无水乙醇中,分散均匀,得到改性液;
S4、将1重量份活化填料加入到5重量份改性剂中,以500rpm转速搅拌240min,过滤,干燥,得到改性填料。
所述第二PE层包括:56wt%高密度聚乙烯、39.5wt%线性低密度聚乙烯、3.5 wt%硬脂酸钙、0.8 wt%增容剂、0.2 wt%十六烷基三甲氧基硅烷。
所述第三PE层包括:58.7wt%高密度聚乙烯、35wt%线性低密度聚乙烯、5wt%硬脂酸钙、1wt%增容剂、0.3wt%十六烷基三甲氧基硅烷。
所述内涂层通过在第二PE层表面涂覆水性高阻隔改性聚乙烯醇乳液,烘干而成。
所述粘接层通过在第二PE层、第三PE层之间涂覆聚氨酯胶粘剂形成。
所述材料的总厚度为100μm。
所述第一PE层的厚度占总厚度的25%,所述内涂层占总厚度的15%,所述第二PE层的厚度占总厚度的25%,所述粘接层占总厚度的10%,所述第三PE层占总厚度的25%。
实施例2
一种涂层高阻隔PE材料,从上至下包括第一PE层、内涂层、第二PE层、粘接层、第三PE层。
所述第一PE层包括:50.9wt%高密度聚乙烯、40wt%线性低密度聚乙烯、5wt%改性填料、2wt%硬脂酸钙、2wt%增容剂、0.1wt%十六烷基三甲氧基硅烷。
所述改性填料的制备方法为:
S1、将10重量份蒙脱土、8重量份二氧化钛、6重量份壳聚糖、4重量份羟基磷灰石、2重量份碳酸钙加入到60重量份无水乙醇中,分散均匀,得到填料混合液;
S2、将6重量份三乙胺、2重量份草酸、0.5重量份2-溴代异丁酰溴加入到S1制备的填料混合液中,以400rpm转速搅拌200min,过滤,干燥,得到活化填料;
S3、将0.1重量份γ-(2,3-环氧丙氧)丙基三甲氧基硅烷、1重量份羧甲基纤维素、1重量份海藻酸钠加入到17.9重量份无水乙醇中,分散均匀,得到改性液;
S4、将1重量份活化填料加入到5重量份改性剂中,以400rpm转速搅拌200min,过滤,干燥,得到改性填料。
所述第二PE层包括:56wt%高密度聚乙烯、39.5wt%线性低密度聚乙烯、3.5 wt%硬脂酸钙、0.8 wt%增容剂、0.2 wt%十六烷基三甲氧基硅烷。
所述第三PE层包括:58.7wt%高密度聚乙烯、35wt%线性低密度聚乙烯、5wt%硬脂酸钙、1wt%增容剂、0.3wt%十六烷基三甲氧基硅烷。
所述内涂层通过在第二PE层表面涂覆水性高阻隔改性聚乙烯醇乳液,烘干而成。
所述粘接层通过在第二PE层、第三PE层之间涂覆聚氨酯胶粘剂形成。
所述材料的总厚度为100μm。
所述第一PE层的厚度占总厚度的25%,所述内涂层占总厚度的15%,所述第二PE层的厚度占总厚度的25%,所述粘接层占总厚度的10%,所述第三PE层占总厚度的25%。
实施例3
一种涂层高阻隔PE材料,从上至下包括第一PE层、内涂层、第二PE层、粘接层、第三PE层。
所述第一PE层包括:53.8wt%高密度聚乙烯、32wt%线性低密度聚乙烯、8wt%改性填料、5wt%硬脂酸钙、0.8wt%增容剂、0.4wt%十六烷基三甲氧基硅烷。
所述第一PE层包括:53.3wt%高密度聚乙烯、32wt%线性低密度聚乙烯、10 wt%改性填料、3wt%硬脂酸钙、1.5wt%增容剂、0.2wt%十六烷基三甲氧基硅烷。
所述改性填料的制备方法为:
S1、将14重量份蒙脱土、10重量份二氧化钛、8重量份壳聚糖、8重量份羟基磷灰石、5重量份碳酸钙加入到70重量份无水乙醇中,分散均匀,得到填料混合液;
S2、将8重量份三乙胺、4重量份草酸、1重量份2-溴代异丁酰溴加入到S1制备的填料混合液中,以400rpm转速搅拌200min,过滤,干燥,得到活化填料;
S3、将0.3重量份γ-(2,3-环氧丙氧)丙基三甲氧基硅烷、2重量份羧甲基纤维素、2重量份海藻酸钠加入到15.7重量份无水乙醇中,分散均匀,得到改性液;
S4、将1重量份活化填料加入到5重量份改性剂中,以500rpm转速搅拌240min,过滤,干燥,得到改性填料。
所述第二PE层包括:56wt%高密度聚乙烯、39.5wt%线性低密度聚乙烯、3.5 wt%硬脂酸钙、0.8 wt%增容剂、0.2 wt%十六烷基三甲氧基硅烷。
所述第三PE层包括:58.7wt%高密度聚乙烯、35wt%线性低密度聚乙烯、5wt%硬脂酸钙、1wt%增容剂、0.3wt%十六烷基三甲氧基硅烷。
所述内涂层通过在第二PE层表面涂覆水性高阻隔改性聚乙烯醇乳液,烘干而成。
所述粘接层通过在第二PE层、第三PE层之间涂覆聚氨酯胶粘剂形成。
所述材料的总厚度为100μm。
所述第一PE层的厚度占总厚度的25%,所述内涂层占总厚度的15%,所述第二PE层的厚度占总厚度的25%,所述粘接层占总厚度的10%,所述第三PE层占总厚度的25%。
对比例1
对比例1与实施例1不同之处在于,对比例1不含有所述的改性填料,其他都相同。
对比例2
对比例2与实施例1不同之处在于,对比例2采用填料替换改性填料,其他都相同。
所述填料由14重量份蒙脱土、10重量份二氧化钛、8重量份壳聚糖、8重量份羟基磷灰石、5重量份碳酸钙组成。
对比例3
对比例3与实施例1不同之处在于,对比例3所述的改性填料的制备方法不同于实施例1,其他都相同。
在本对比例中,将填料活化后,不采用后续步骤进行处理。
所述改性填料的制备方法为:
S1、将14重量份蒙脱土、10重量份二氧化钛、8重量份壳聚糖、8重量份羟基磷灰石、5重量份碳酸钙加入到70重量份无水乙醇中,分散均匀,得到填料混合液;
S2、将8重量份三乙胺、4重量份草酸、1重量份2-溴代异丁酰溴加入到S1制备的填料混合液中,以400rpm转速搅拌200min,过滤,干燥,得到改性填料。
对比例4
对比例4与实施例1不同之处在于,对比例4所述的改性填料的制备方法不同于实施例1,其他都相同。
在本对比例中,所述的填料不经过活化处理。
所述改性填料的制备方法为:
S1、将14重量份蒙脱土、10重量份二氧化钛、8重量份壳聚糖、8重量份羟基磷灰石、5重量份碳酸钙加入到70重量份无水乙醇中,分散均匀,得到填料混合液;
S3、将0.3重量份γ-(2,3-环氧丙氧)丙基三甲氧基硅烷、2重量份羧甲基纤维素、2重量份海藻酸钠加入到15.7重量份无水乙醇中,分散均匀,得到改性液;
S4、将S2制备的改性液滴入S1制备的填料混合液中,以500rpm转速搅拌240min,过滤,干燥,得到改性填料。
为了进一步证明本发明的效果,提供了以下测试方法:
1.实施例1~3、对比例1~4所述的材料的性能测试结果见表1。
其中水蒸气透过量采用GB1037-88进行测试、氧气透过量采用B/T1038-2000进行测试。
表1 测试结果
从表1中可看出,本发明所述的涂层高阻隔PE材料具有良好的阻隔性能。
对比实施例1~3可看出,通过优化配方比例以及所述的改性填料的制备参数可以有效的提高阻隔性能。
对比实施例1与对比例1~4可知,本发明所述的改性填料能够有效的提高阻隔性能,且不同的改性填料的制备方法制备得到的改性填料对于阻隔性能的提高是不同的,采取本发明所述的改性填料的制备方法制备得到的改性填料相比于其他方法制备的改性填料能够更加显著的提高阻隔性能。
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发明技术思想的范围内,进行多样的变更以及修改。本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)
1.一种涂层高阻隔PE材料,其特征在于,从上至下包括第一PE层、内涂层、第二PE层、粘接层、第三PE层,所述第一PE层的厚度占总厚度的20~30%,所述内涂层占总厚度的10~20%,所述第二PE层的厚度占总厚度的20~30%,所述粘接层占总厚度的5~15%,所述第三PE层占总厚度的20~30%;
所述第一PE层包括:45~60wt%高密度聚乙烯、25~40wt%线性低密度聚乙烯、5~15wt%改性填料、2~5wt%硬脂酸钙、0.8~2wt%增容剂、0.1~0.4wt%十六烷基三甲氧基硅烷;
所述改性填料的制备方法为:
S1、将10重量份蒙脱土、8重量份二氧化钛、6重量份壳聚糖、4重量份羟基磷灰石、2重量份碳酸钙加入到60重量份无水乙醇中,分散均匀,得到填料混合液;
S2、将6重量份三乙胺、2重量份草酸、0.5重量份2-溴代异丁酰溴加入到S1制备的填料混合液中,以400rpm转速搅拌200min,过滤,干燥,得到活化填料;
S3、将0.1重量份γ-(2,3-环氧丙氧)丙基三甲氧基硅烷、1重量份羧甲基纤维素、1重量份海藻酸钠加入到17.9重量份无水乙醇中,分散均匀,得到改性液;
S4、将1重量份活化填料加入到5重量份改性液中,以400rpm转速搅拌200min,过滤,干燥,得到改性填料。
2.根据权利要求1所述的涂层高阻隔PE材料,其特征在于,所述材料的总厚度为80~200μm。
3.根据权利要求1所述的涂层高阻隔PE材料,其特征在于,所述第二PE层包括:45~60wt%高密度聚乙烯、30~45wt%线性低密度聚乙烯、2~5wt%硬脂酸钙、0.5~1.5wt%增容剂、0.1~0.5wt%十六烷基三甲氧基硅烷。
4.根据权利要求1所述的涂层高阻隔PE材料,其特征在于,所述第二PE层包括:56wt%高密度聚乙烯、39.5wt%线性低密度聚乙烯、3.5 wt%硬脂酸钙、0.8 wt%增容剂、0.2 wt%十六烷基三甲氧基硅烷。
5.根据权利要求1所述的涂层高阻隔PE材料,其特征在于,所述第三PE层包括:50~65wt%高密度聚乙烯、30~40wt%线性低密度聚乙烯、2~6wt%硬脂酸钙、0.5~2wt%增容剂、0.2~0.5wt%十六烷基三甲氧基硅烷。
6.根据权利要求1所述的涂层高阻隔PE材料,其特征在于,所述第三PE层包括:58.7wt%高密度聚乙烯、35wt%线性低密度聚乙烯、5wt%硬脂酸钙、1wt%增容剂、0.3wt%十六烷基三甲氧基硅烷。
7.根据权利要求1所述的涂层高阻隔PE材料,其特征在于,所述内涂层通过在第二PE层表面涂覆水性高阻隔改性聚乙烯醇乳液,烘干而成。
8.根据权利要求1所述的涂层高阻隔PE材料,其特征在于,所述粘接层通过在第二PE层、第三PE层之间涂覆聚氨酯胶粘剂形成。
9.根据权利要求1所述的涂层高阻隔PE材料,其特征在于,所述第一PE层包括:53.3wt%高密度聚乙烯、32wt%线性低密度聚乙烯、10 wt%改性填料、3wt%硬脂酸钙、1.5wt%增容剂、0.2wt%十六烷基三甲氧基硅烷。
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