CN114347610A - 一种易撕pe膜材料及其制备方法和应用 - Google Patents
一种易撕pe膜材料及其制备方法和应用 Download PDFInfo
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Abstract
本发明公开了一种易撕PE膜材料及其制备方法和应用,所述易撕PE膜的内层原料包括:碳酸钙、硅胶粉、聚酯纤维、羟丙基甲基纤维素、抗氧剂、增塑剂、热稳定剂、低密度聚乙烯、醋酸纤维和高密度聚乙烯;所述易撕PE膜的中层原料包括:碳酸钙、硅胶粉、聚酯纤维、羟丙基甲基纤维素、抗氧剂、增塑剂、热稳定剂、低密度聚乙烯、EVA树脂、PPA母粒和高密度聚乙烯;所述易撕PE膜的外层原料包括:碳酸钙、硅胶粉、聚酯纤维、羟丙基甲基纤维素、抗氧剂、增塑剂、热稳定剂、低密度聚乙烯、线性低密度聚乙烯、纳米炭黑和高密度聚乙烯。本发明制得的PE膜具有良好的均一性、柔软性,同时具有易撕性,丰富了其应用。
Description
技术领域
本发明属于高分子化学技术领域,特别是涉及一种易撕PE膜材料。
背景技术
PE膜是目前市场上比较常用的食品包装,也应用与其他多种用途包装如日用品工业品等,PE膜的主要成分为聚乙烯,是聚乙烯膜,由于聚乙烯薄膜的原材料产量大,资源丰富,价格较低,并且聚乙烯薄膜生产工艺已经趋于成熟,产品性能稳定,且通过各种成熟的改性技术,技术人员们已经获得了多种具有不同优异特点的聚乙烯薄膜,不同的优异特点使得它们可以适应更加严苛的适用环境,大大增加了聚乙烯薄膜的适用范围。鉴于其无与伦比的性价比,聚乙烯膜是世界上应用范围最广使用量最大的膜材料,主要用作包装和保护膜。然而,用量如此大的产品,使用起来却存在等多种不便之处,如传统PE膜在制作成PE膜复合袋后,在充填产品后,热封封口,可以很好的保存和保持产品品质,使用产品时热封边不能揭口,消费者需要在PE膜复合袋上撕裂缺口,从缺口中取用产品,但是在产品不能一次使用完毕时,剩余的产品不易封口保存和保鲜等。
发明内容
本发明主要解决的技术问题是提供一种易撕PE膜材料及其制备方法和应用,本发明制得的PE膜具有良好的均一性、柔软性,同时具有易撕性,丰富了其应用。
为解决上述技术问题,本发明采用的一个技术方案是:一种易撕PE膜材料,其具有内层、中层和外层的三层结构:
其中,所述易撕PE膜的内层的制备原料包括按重量份计的:碳酸钙10-20份、硅胶粉5-10份、聚酯纤维1.5-3.5份、羟丙基甲基纤维素0.3-0.8份、抗氧剂0.8-1.5份、增塑剂0.8-1.5份、热稳定剂3-8份、硬脂酸铁盐2-6份、润滑剂0.2-0.8份、分散剂0.2-0.8份、钛酸酯偶联剂1-2.5份、低密度聚乙烯2-10份、醋酸纤维0.5-1份和高密度聚乙烯55-65份;
所述易撕PE膜的中层的制备原料包括按重量份计的:碳酸钙10-20份、硅胶粉5-10份、聚酯纤维1.5-3.5份、羟丙基甲基纤维素0.3-0.8份、抗氧剂0.8-1.5份、增塑剂0.8-1.5份、热稳定剂3-8份、硬脂酸铁盐2-6份、润滑剂0.2-0.8份、分散剂0.2-0.8份、钛酸酯偶联剂1-2.5份、低密度聚乙烯2-10份、EVA树脂2-5份、PPA母粒0.5-1份和高密度聚乙烯55-65份;
所述易撕PE膜的外层的制备原料包括按重量份计的:碳酸钙10-20份、硅胶粉5-10份、聚酯纤维1.5-3.5份、羟丙基甲基纤维素0.3-0.8份、抗氧剂0.8-1.5份、增塑剂0.8-1.5份、热稳定剂3-8份、硬脂酸铁盐2-6份、润滑剂0.2-0.8份、分散剂0.2-0.8份、钛酸酯偶联剂1-2.5份、低密度聚乙烯2-10、线性低密度聚乙烯1-2.5份、纳米炭黑0.4-1份和高密度聚乙烯55-65份。
进一步地说,所述抗氧剂为抗氧剂IRGANOX1010和/或抗氧剂IRGAFOS168。
进一步地说,所述增塑剂为松香树脂和/或丙烯腈-丁二烯-苯乙烯共聚物。
进一步地说,所述热稳定剂为二月桂酸二丁基锡和/或甲基戊醇。
进一步地说,所述硬脂酸铁盐为硬脂酸锌和/或硬脂酸铁铁。
进一步地说,所述分散剂为十二烷基硫酸钠和/或十二烷基苯磺酸钠。
进一步地说,所述润滑剂为聚乙烯蜡。
一种易撕PE膜材料的制备方法,包括以下步骤:
(1)将配方用量的碳酸钙、硅胶粉、聚酯纤维羟丙基甲基纤维素、抗氧剂、增塑剂、热稳定剂、硬脂酸铁盐、润滑剂、分散剂、钛酸酯偶联剂、低密度聚乙烯和醋酸纤维加入混合机中混合,得到混合物a,将得到的混合物a置于双螺杆挤出机挤出制得母料A,将得到的母料A与高密度聚乙烯在捏合机中捏合后进入密炼机中密炼得到内层成膜料;
(2)将配方用量的碳酸钙、硅胶粉、聚酯纤维羟丙基甲基纤维素、抗氧剂、增塑剂、热稳定剂、硬脂酸铁盐、润滑剂、分散剂、钛酸酯偶联剂、低密度聚乙烯、EVA树脂和PPA母粒加入混合机中混合,得到混合物b,将得到的混合物b置于双螺杆出机挤出制得母料B,将得到的母料B与高密度聚乙烯在捏合机中捏合后进入密炼机中密炼得到中层成膜料;
(3)将配方用量的碳酸钙、硅胶粉、聚酯纤维羟丙基甲基纤维素、抗氧剂、增塑剂、热稳定剂、硬脂酸铁盐、润滑剂、分散剂、钛酸酯偶联剂、低密度聚乙烯、线性低密度聚乙烯和纳米炭黑加入混合机中混合,得到混合物c,将得到的混合物c置于双螺杆出机挤出制得母料C,将得到的母料C与高密度聚乙烯在捏合机中捏合后进入密炼机中密炼得到外层成膜料;
(4)将上述步骤(1)、(2)、(3)中分别得到的内层成膜料、中层成膜料和外层成膜料加入三层共挤流延机中进行共挤流延拉伸,即得到所述易撕PE膜。
进一步地说,所述步骤(4)中的共挤流延拉伸的拉伸比为1.2-1.6:1。
所述的易撕PE膜材料的应用,将所述易撕PE膜材料运用于产品包装,包括PE普通包装袋、纸巾包装袋、卫生巾包装袋或纸尿裤包装袋。
本发明的有益效果至少具有以下几点:
(1)本发明制得的PE膜具有良好的均一性、柔软性,同时具有易撕性,丰富了其应用;
(2)本发明通过调整PE膜内层、中层和外层中的成分的组成及含量,引入醋酸纤维、EVA树脂、PPA母粒、线性低密度聚乙烯、纳米炭黑赋予膜不同的功能,通过各组分之间的共同作用不仅可以使得制备的PE膜具备易撕性,同时保持了高的复合强度及耐光老化能力;
(3)本发明制得的PE膜纵向拉伸强度在61Mpa以上,横向拉伸强度在72Mpa以上,抗冲抗击强度为640g以上,纵向撕裂强度在17Mpa以下,横向撕裂强度20Mpa以下。
具体实施方式
下面对本发明的较佳实施例进行详细阐述,以使本发明的优点和特征能更易于被本领域技术人员理解,从而对本发明的保护范围做出更为清楚明确的界定。
实施例1:一种易撕PE膜材料,配方按重量份计如下:
内层 | 中层 | 外层 | |
碳酸钙 | 10 | 10 | 10 |
硅胶粉 | 10 | 10 | 10 |
聚酯纤维 | 1.5 | 1.5 | 1.5 |
羟丙基甲基纤维素 | 0.8 | 0.8 | 0.8 |
抗氧剂IRGANOX1010 | 0.8 | 0.8 | 0.8 |
松香树脂 | 1.5 | 1.5 | 1.5 |
二月桂酸二丁基锡 | 3 | 3 | 3 |
硬脂酸锌 | 2 | 2 | 2 |
聚乙烯蜡 | 0.8 | 0.8 | 0.8 |
十二烷基硫酸钠 | 0.2 | 0.2 | 0.2 |
钛酸酯偶联剂 | 1 | 1 | 1 |
低密度聚乙烯 | 10 | 10 | 10 |
醋酸纤维 | 0.5 | 0 | 0 |
EVA树脂 | 0 | 2 | 0 |
PPA母粒 | 0 | 1 | 0 |
线性低密度聚乙烯 | 0 | 0 | 1 |
纳米炭黑 | 0 | 0 | 1 |
高密度聚乙烯 | 55 | 55 | 55 |
制备方法包括以下步骤:
(1)取按重量份计的碳酸钙10份、硅胶粉10份、聚酯纤维1.5份、羟丙基甲基纤维素0.8份、抗氧剂IRGANOX1010 0.8份、松香树脂1.5份、二月桂酸二丁基锡3份、硬脂酸锌2份、聚乙烯蜡0.8份、十二烷基硫酸钠0.2份、钛酸酯偶联剂1份、低密度聚乙烯10份和醋酸纤维0.5份加入混合机中混合20min,得到混合物a,将得到的混合物a置于双螺杆挤出机挤出制得母料A,双螺杆挤出机的各段以及机头温度分别为:180℃、200℃、220℃、220℃、210℃,螺杆的转速600r/min,将得到的母料A与高密度聚乙烯在捏合机中捏合后15min后进入加压密炼机中密炼20min得到内层成膜料,密炼的温度为140℃;
(2)取按重量份计的碳酸钙10份、硅胶粉10份、聚酯纤维1.5份、羟丙基甲基纤维素0.8份、抗氧剂IRGANOX1010 0.8份、松香树脂1.5份、二月桂酸二丁基锡3份、硬脂酸锌2份、聚乙烯蜡0.8份、十二烷基硫酸钠0.2份、钛酸酯偶联剂1份、低密度聚乙烯10份、EVA树脂2份和PPA母粒1份加入混合机中混合20min,得到混合物b,将得到的混合物b置于双螺杆挤出机挤出制得母料B,双螺杆挤出机的各段以及机头温度分别为:180℃、200℃、220℃、220℃、210℃,螺杆的转速600r/min,将得到的母料B与高密度聚乙烯在捏合机中捏合后15min后进入加压密炼机中密炼20min得到中层成膜料,密炼的温度为160℃;
(3)取按重量份计的碳酸钙10份、硅胶粉10份、聚酯纤维1.5份、羟丙基甲基纤维素0.8份、抗氧剂IRGANOX1010 0.8份、松香树脂1.5份、二月桂酸二丁基锡3份、硬脂酸锌2份、聚乙烯蜡0.8份、十二烷基硫酸钠0.2份、钛酸酯偶联剂1份、低密度聚乙烯10份、线性低密度聚乙烯1份和纳米炭黑1份加入混合机中混合20min,得到混合物c,将得到的混合物c置于双螺杆挤出机挤出制得母料C,双螺杆挤出机的各段以及机头温度分别为:180℃、200℃、220℃、220℃、210℃,螺杆的转速600r/min,将得到的母料C与高密度聚乙烯在捏合机中捏合后15min后进入加压密炼机中密炼20min得到外层成膜料,密炼的温度为140℃;
(4)将步骤(1)、(2)、(3)中分别得到的内层成膜料、中层成膜料和外层成末了加入三层共挤流延机中进行共挤流延拉伸,控制拉伸比为1.2:1,即得。
实施例2:一种易撕PE膜材料,配方按重量份计如下:
制备方法,基本同实施例1,与实施例1的差别在于:
在步骤(1)、(2)、(3)中混合机中混合的时间为30min;密炼的温度为160℃;控制拉伸比为1.6:1,即得。
实施例3:一种易撕PE膜材料,配方按重量份计如下:
制备方法,基本同实施例1,与实施例1的差别在于:
在步骤(1)、(2)、(3)中混合机中混合的时间为25min;密炼的温度为145℃;控制拉伸比为1.3:1,即得。
实施例4:一种易撕PE膜材料,配方按重量份计如下:
制备方法,基本同实施例1,与实施例1的差别在于:
在步骤(1)、(2)、(3)中混合机中混合的时间为28min;密炼的温度为155℃;控制拉伸比为1.4:1,即得。
实施例5:一种易撕PE膜材料,配方按重量份计如下:
制备方法,基本同实施例1,与实施例1的差别在于:
在步骤(1)、(2)、(3)中混合机中混合的时间为30min;密炼的温度为150℃;控制拉伸比为1.4:1,即得。
对比例1:一种易撕PE膜材料
配方基本同实施例5,与实施例5的区别为内层、中层、和外层配方中不含有硬脂酸铁。
制备方法基本同实施例5。
对比例2:一种易撕PE膜材料
配方基本同实施例5,与实施例5的区别为内层、中层、和外层配方中不含有硬脂酸锌。
制备方法基本同实施例5。
对比例3:一种易撕PE膜材料
配方基本同实施例5,与实施例5的区别为内层、中层和外层配方中不含硬脂酸锌和硬脂酸铁。
制备方法基本同实施例5。
对比例4:一种易撕PE膜材料
配方基本同实施例5,与实施例5的区别为内层配方中不含醋酸纤维。
制备方法基本同实施例5。
对比例5:一种易撕PE膜材料
配方基本同实施例5,与实施例5的区别为中层配方中不含EVA树脂。
制备方法基本同实施例5。
对比例6:一种易撕PE膜材料
配方基本同实施例5,与实施例5的区别为中层配方中不含PPA母粒。
制备方法基本同实施例5。
对比例7:一种易撕PE膜材料
配方基本同实施例5,与实施例5的区别为中层配方中不含PPA母粒和EVA树脂。
制备方法基本同实施例5。
对比例8:一种易撕PE膜材料
配方基本同实施例5,与实施例5的区别为外层配方中不含纳米炭黑。
制备方法基本同实施例5。
对比例9:一种易撕PE膜材料
配方基本同实施例5,与实施例5的区别为外层配方中不含线性低密度聚乙烯。
取分别经实施例1-5和对比例1-9制备的PE膜进行撕裂强度、抗冲击强度、拉伸强度测试。其中,撕裂强度按照GB/T 16578-1996中规定的方法进行测定;拉伸性能按照GB/T1040.3-2006中规定的方法进行测定;冲击强度按照GB/T9639-1988中规定的方法进行测试。测试结果如下:
以上所述仅为本发明的实施例,并非因此限制本发明的专利范围,凡是利用本发明说明书内容所作的等效结构变换,或直接或间接运用在其他相关的技术领域,均同理包括在本发明的专利保护范围内。
Claims (10)
1.一种易撕PE膜材料,其特征在于:其具有内层、中层和外层的三层结构:
其中,所述易撕PE膜的内层的制备原料包括:碳酸钙、硅胶粉、聚酯纤维、羟丙基甲基纤维素、抗氧剂、增塑剂、热稳定剂、硬脂酸铁盐、润滑剂、分散剂、钛酸酯偶联剂、低密度聚乙烯、醋酸纤维和高密度聚乙烯;
所述易撕PE膜的中层的制备原料包括:碳酸钙、硅胶粉、聚酯纤维、羟丙基甲基纤维素、抗氧剂、增塑剂、热稳定剂、硬脂酸铁盐、润滑剂、分散剂、钛酸酯偶联剂、低密度聚乙烯、EVA树脂、PPA母粒和高密度聚乙烯;
所述易撕PE膜的外层的制备原料包括:碳酸钙、硅胶、聚酯纤维、羟丙基甲基纤维素、抗氧剂、增塑剂、热稳定剂、硬脂酸铁盐、润滑剂、分散剂、钛酸酯偶联剂、低密度聚乙烯、线性低密度聚乙烯、纳米炭黑和高密度聚乙烯。
2.根据权利要求1所述的一种易撕PE膜材料,其特征在于:
其中,所述易撕PE膜的内层的制备原料包括按重量份计的:碳酸钙10-20份、硅胶粉5-10份、聚酯纤维1.5-3.5份、羟丙基甲基纤维素0.3-0.8份、抗氧剂0.8-1.5份、增塑剂0.8-1.5份、热稳定剂3-8份、硬脂酸铁盐2-6份、润滑剂0.2-0.8份、分散剂0.2-0.8份、钛酸酯偶联剂1-2.5份、低密度聚乙烯2-10份、醋酸纤维0.5-1份和高密度聚乙烯55-65份;
所述易撕PE膜的中层的制备原料包括按重量份计的:碳酸钙10-20份、硅胶粉5-10份、聚酯纤维1.5-3.5份、羟丙基甲基纤维素0.3-0.8份、抗氧剂0.8-1.5份、增塑剂0.8-1.5份、热稳定剂3-8份、硬脂酸铁盐2-6份、润滑剂0.2-0.8份、分散剂0.2-0.8份、钛酸酯偶联剂1-2.5份、低密度聚乙烯2-10份、EVA树脂2-5份、PPA母粒0.5-1份和高密度聚乙烯55-65份;
所述易撕PE膜的外层的制备原料包括按重量份计的:碳酸钙10-20份、硅胶粉5-10份、聚酯纤维1.5-3.5份、羟丙基甲基纤维素0.3-0.8份、抗氧剂0.8-1.5份、增塑剂0.8-1.5份、热稳定剂3-8份、硬脂酸铁盐2-6份、润滑剂0.2-0.8份、分散剂0.2-0.8份、钛酸酯偶联剂1-2.5份、低密度聚乙烯2-10、线性低密度聚乙烯1-2.5份、纳米炭黑0.4-1份和高密度聚乙烯55-65份。
3.根据权利要求1所述的一种易撕PE膜材料,其特征在于:所述抗氧剂为抗氧剂IRGANOX1010和/或抗氧剂IRGAFOS168。
4.根据权利要求1所述的一种易撕PE膜材料,其特征在于:所述增塑剂为松香树脂和/或丙烯腈-丁二烯-苯乙烯共聚物。
5.根据权利要求1所述的一种易撕PE膜材料,其特征在于:所述热稳定剂为二月桂酸二丁基锡和/或甲基戊醇。
6.根据权利要求1所述的一种易撕PE膜材料,其特征在于:所述硬脂酸铁盐为硬脂酸锌和/或硬脂酸铁铁。
7.根据权利要求1所述的一种易撕PE膜材料,其特征在于:所述分散剂为十二烷基硫酸钠和/或十二烷基苯磺酸钠;所述润滑剂为聚乙烯蜡。
8.一种易撕PE膜材料的制备方法,其特征在于:包括以下步骤:
(1)将配方用量的碳酸钙、硅胶粉、聚酯纤维羟丙基甲基纤维素、抗氧剂、增塑剂、热稳定剂、硬脂酸铁盐、润滑剂、分散剂、钛酸酯偶联剂、低密度聚乙烯和醋酸纤维加入混合机中混合,得到混合物a,将得到的混合物a置于双螺杆挤出机挤出制得母料A,将得到的母料A与高密度聚乙烯在捏合机中捏合后进入密炼机中密炼得到内层成膜料;
(2)将配方用量的碳酸钙、硅胶粉、聚酯纤维羟丙基甲基纤维素、抗氧剂、增塑剂、热稳定剂、硬脂酸铁盐、润滑剂、分散剂、钛酸酯偶联剂、低密度聚乙烯、EVA树脂和PPA母粒加入混合机中混合,得到混合物b,将得到的混合物b置于双螺杆出机挤出制得母料B,将得到的母料B与高密度聚乙烯在捏合机中捏合后进入密炼机中密炼得到中层成膜料;
(3)将配方用量的碳酸钙、硅胶粉、聚酯纤维羟丙基甲基纤维素、抗氧剂、增塑剂、热稳定剂、硬脂酸铁盐、润滑剂、分散剂、钛酸酯偶联剂、低密度聚乙烯、线性低密度聚乙烯和纳米炭黑加入混合机中混合,得到混合物c,将得到的混合物c置于双螺杆出机挤出制得母料C,将得到的母料C与高密度聚乙烯在捏合机中捏合后进入密炼机中密炼得到外层成膜料;
(4)将上述步骤(1)、(2)、(3)中分别得到的内层成膜料、中层成膜料和外层成膜料加入三层共挤流延机中进行共挤流延拉伸,即得到所述易撕PE膜。
9.根据权利要求8所述的一种易撕PE膜材料的制备方法,其特征在于:所述步骤(4)中的共挤流延拉伸的拉伸比为1.2-1.6:1。
10.权利要求1-9中任一项所述的易撕PE膜材料的应用,其特征在于:将所述易撕PE膜材料运用于产品包装,包括PE普通包装袋、纸巾包装袋、卫生巾包装袋或纸尿裤包装袋。
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