CN104130484B - 一种pe薄膜包装材料及其制备方法 - Google Patents

一种pe薄膜包装材料及其制备方法 Download PDF

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CN104130484B
CN104130484B CN201410294112.2A CN201410294112A CN104130484B CN 104130484 B CN104130484 B CN 104130484B CN 201410294112 A CN201410294112 A CN 201410294112A CN 104130484 B CN104130484 B CN 104130484B
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徐长勇
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Foshan Shunde Ztech Plastic Machinery Manufacturing Co., Ltd
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    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04Homopolymers or copolymers of ethene
    • C08L23/06Polyethene
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    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18Manufacture of films or sheets
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2323/00Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2323/04Homopolymers or copolymers of ethene
    • C08J2323/06Polyethene
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    • C08J2427/00Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
    • C08J2427/02Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
    • C08J2427/12Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
    • C08J2427/18Homopolymers or copolymers of tetrafluoroethylene
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    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2471/00Characterised by the use of polyethers obtained by reactions forming an ether link in the main chain; Derivatives of such polymers
    • C08J2471/02Polyalkylene oxides
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2479/00Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen with or without oxygen, or carbon only, not provided for in groups C08J2461/00 - C08J2477/00
    • C08J2479/02Polyamines
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    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2203/00Applications
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    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00Polymer mixtures characterised by other features
    • C08L2205/03Polymer mixtures characterised by other features containing three or more polymers in a blend
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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    • C08L2205/00Polymer mixtures characterised by other features
    • C08L2205/03Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend

Abstract

本发明公开了一种PE薄膜包装材料及其制备方法。该PE薄膜包装材料由包含以下重量份的组分制成:PE树脂50‑80份、聚环氧乙烷25‑30份、硬脂酸锌10‑25份、丙三醇8‑12份、蒙脱土5‑8份、油酸3‑8份和聚乙酰亚胺2‑4份。通过本发明的方法制得的PE薄膜包装材料不需要经过表面处理,即具有良好的油墨附着力和颜料附着力,并且不易脱落,且该PE薄膜材料表面的光泽度良好,具有良好的拉伸性能。

Description

一种PE薄膜包装材料及其制备方法
技术领域
本发明属于薄膜材料领域,特别涉及一种PE薄膜包装材料及其制备方法。
背景技术
聚乙烯薄膜是一种具有良好机械性能的薄膜,其具有光泽,且质地较柔软,一般采用吹塑和流延工艺成型,聚乙烯具有的良好的化学稳定性、耐水性和耐刮擦性能,因而被广泛应用的包装膜材料之一。
现有的包装材料,除了需要具有良好的力学性能和表面性能外,还需要具有良好的印刷性能,能够很好地被油墨和颜料附着,并且不易脱落,很多现有的包装材料都需要经过表面处理才能通过油墨和黏胶将图片附着在薄膜表面。
由于聚乙烯分子中不含极性基团,同时结晶度高,因此其薄膜的表面印刷性能较差,对油墨和胶黏剂的附着力差。 发明内容
针对上述的需求,本发明提供了一种PE薄膜包装材料及其制备方法, 本发明制得的PE薄膜包装材料不需要经过表面处理,即具有良好的油墨附着力和颜料附着力,并且不易脱落,且该PE薄膜包装材料表面的光泽度良好,具有良好的拉伸性能。
本发明的目的可以通过以下技术方案实现:
一种PE薄膜包装材料,由包含以下重量份的组分制成:
PE树脂 50-80份,
聚环氧乙烷 25-30份,
硬脂酸锌 10-25份,
丙三醇 8-12份,
蒙脱土 5-8份,
油酸 3-8份,
聚乙酰亚胺 2-4份。
所述组分还包括0-2重量份聚四氟乙烯。
所述聚环氧乙烷的平均分子质量为6000-8000。
一种PE薄膜包装材料的制备方法,该方法包括以下步骤:
(1)将蒙脱土在90-110℃下,干燥2-3小时,加入球磨机中进行研磨,备用;
(2)称取PE树脂50-80份、聚环氧乙烷25-30份、硬脂酸锌10-25份、丙三醇8-12份、蒙脱土5-8份、油酸3-8份、聚乙酰亚胺2-4份和聚四氟乙烯0-2份;
(3)倒加入高速混合机中,调节pH为6.5,混合温度为70-90℃,混合时间为10min,将混合好的物料送入双螺杆挤出机中,物料在螺杆的剪切、混炼和输送下充分的熔合,最后熔融挤出造粒,压延成型,得到PE薄膜包装材料。
所述研磨时间为1-2小时。
所述熔融挤出温度为 260-280℃。
本发明与现有技术相比,其有益效果为:
(1)本发明的PE薄膜包装材料不需要经过表面处理,即具有良好的油墨附着力和颜料附着力,并且不易脱落。
(2)本发明的PE薄膜包装材料通过调节各组分的投入量和在弱酸性条件下加入聚乙酰亚胺,因而使材料的油墨附着力更加优良,同时,使薄膜的表面的光泽度依然保持良好。
(3)本发明通过加入研磨过的蒙脱土优化了PE薄膜包装材料的各项力学性能。
具体实施方式
以下结合实施例对本发明作进一步的说明。
实施例1
(1)将蒙脱土在90℃下,干燥2小时,加入球磨机中,研磨1小时,备用;
(2)称取PE树脂50kg、平均分子质量为7000的聚环氧乙烷25kg、硬脂酸锌20kg、丙三醇12kg、蒙脱土6kg、油酸3kg和聚乙酰亚胺2kg;
(3)倒加入高速混合机中,调节pH为6.5,混合温度为70℃,混合时间为10min,将混合好的物料送入双螺杆挤出机中,物料在螺杆的剪切、混炼和输送下充分的熔合,最后在280℃温度下熔融挤出造粒,压延成型,得到厚度为0.8mm的PE薄膜包装材料。
制得PE薄膜包装材料的性能测试结果如表1所示。
实施例2
(1)将蒙脱土在100℃下,干燥3小时,加入球磨机中,研磨2小时,备用;
(2)称取PE树脂60kg、平均分子质量为8000的聚环氧乙烷30kg、硬脂酸锌25kg、丙三醇8kg、蒙脱土8kg、油酸8kg、聚乙酰亚胺4kg和聚四氟乙烯2kg;
(3)倒加入高速混合机中,调节pH为6.5,混合温度为90℃,混合时间为10min,将混合好的物料送入双螺杆挤出机中,物料在螺杆的剪切、混炼和输送下充分的熔合,最后在270℃温度下熔融挤出造粒,压延成型,得到厚度为0.8mm的PE薄膜包装材料。
制得PE薄膜包装材料的性能测试结果如表1所示。
实施例3
(1)将蒙脱土在110℃下,干燥2小时,加入球磨机中,研磨2小时,备用;
(2)称取PE树脂80kg、平均分子质量为6000的聚环氧乙烷25kg、硬脂酸锌10kg、丙三醇10kg、蒙脱土5kg、油酸5kg和聚乙酰亚胺2kg;
(3)倒加入高速混合机中,调节pH为6.5,混合温度为80℃,混合时间为10min,将混合好的物料送入双螺杆挤出机中,物料在螺杆的剪切、混炼和输送下充分的熔合,最后在260℃温度下熔融挤出造粒,压延成型,得到厚度为0.8mm的PE薄膜包装材料。
制得PE薄膜包装材料的性能测试结果如表1所示。
表1
测试项目 实施例1 实施例2 实施例3
拉伸强度(MPa) 78 83 79
断裂伸长率 48% 52% 55%
本发明不限于这里的实施例,本领域技术人员根据本发明的揭示,不脱离本发明范畴所做出的改进和修改都应该在本发明的保护范围之内。

Claims (1)

1.一种PE 薄膜包装材料,其特征在于,由包含以下重量份的组分制成:
PE 树脂 50-80 份,
聚环氧乙烷 25-30 份,
硬脂酸锌 10-25 份,
丙三醇 8-12 份,
蒙脱土 5-8 份,
油酸 3-8 份,
聚乙酰亚胺 2-4 份;
所述组分还包括0-2 重量份聚四氟乙烯;
所述聚环氧乙烷的平均分子质量为6000-8000;
所述的一种PE 薄膜包装材料通过下述制备方法制备得到:
(1)将蒙脱土在90-110℃下,干燥2-3 小时,加入球磨机中进行研磨,备用;
(2)称取PE 树脂50-80 份、聚环氧乙烷25-30 份、硬脂酸锌10-25 份、丙三醇8-12 份、蒙脱土5-8 份、油酸3-8 份、聚乙酰亚胺2-4 份和聚四氟乙烯0- 2 份;
(3)倒加入高速混合机中,调节pH 为6.5,混合温度为70-90 ℃,混合时间为10min,将混合好的物料送入双螺杆挤出机中,物料在螺杆的剪切、混炼和输送下充分的熔合,最后熔融挤出造粒,压延成型,得到PE 薄膜材料;
所述研磨时间为1-2 小时;
所述熔融挤出温度为 260-280℃。
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CN104788851A (zh) * 2015-04-21 2015-07-22 苏州市鼎立包装有限公司 一种耐拉伸薄膜包装材料及其制备方法
CN105646990A (zh) * 2016-04-08 2016-06-08 苏州锦腾电子科技有限公司 一种透明包装材料用耐热组合物
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CN106905592A (zh) * 2017-02-28 2017-06-30 浙江麦普拉新材料有限公司 一次性医用洞巾pe膜材料及其制备方法
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CN108047543A (zh) * 2017-12-28 2018-05-18 长沙善道新材料科技有限公司 一种pe薄膜材料及其制备方法
CN111321604A (zh) * 2020-03-13 2020-06-23 安徽安远塑胶股份有限公司 一种塑料包装材料及包装材料生产工艺
CN112778555A (zh) * 2021-01-26 2021-05-11 福建技术师范学院 一种pe薄膜包装材料及其制备方法
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