朱世可,陈志杰,费志豪,郑婷婷,范小平,黄苇.PA6/LDPE基复合包装膜的制备及低温力学性能研究[J].包装工程,2025,(5):12-22.
ZHU Shike,CHEN Zhijie,FEI Zhihao,ZHENG Tingting,FAN Xiaoping,HUANG Wei.Preparation and Low-temperature Mechanical Properties of PA6/LDPE-based Composite Packaging Film[J].Packaging Engineering,2025,(5):12-22. |
| PA6/LDPE基复合包装膜的制备及低温力学性能研究 |
| Preparation and Low-temperature Mechanical Properties of PA6/LDPE-based Composite Packaging Film |
| 投稿时间：2024-12-17 |
| DOI：10.19554/j.cnki.1001-3563.2025.05.002 |
| 中文关键词: 低温 增韧 马来酸酐接枝物 PA6/LDPE/PE-g-MAH复合膜 PA6/LDPE/POE-g-MAH复合膜 预制菜包装 |
| 英文关键词: low temperature toughening MAH grafted polymer PA6/LDPE/PE-g-MAH composite film PA6/LDPE/POE-g-MAH composite film prefabricated food packaging |
| 基金项目:广东省2023年乡村振兴战略专项科技兴农项目(2023LZ04) |
|
| 摘要点击次数: |
| 全文下载次数: |
| 中文摘要: |
| 目的 旨在研发一款可在低温下保持良好力学性能的复合薄膜，为解决预制菜等产品的塑料包装在低温下易发生脆化，导致在运输过程中容易破损的问题提供参考。方法 以聚酰胺6(PA6)为基材，与低密度聚乙烯(LDPE)按照一定比例共混后制膜，以马来酸酐接枝聚乙烯(PE-g-MAH)和马来酸酐接枝聚烯烃弹性体(POE-g-MAH)作为相容剂，探究不同添加量的相容剂对复合膜性能的影响，通过透光性能、力学性能、水接触角、吸水性能、阻隔性能、傅里叶红外光谱分析、扫描电子显微镜(Search Engine Marketing，SEM)、差示扫描量热法(Differential Scanning Calorimetry，DSC)进行表征。结果 相容剂的加入可以改善PA6/LDPE共混体系的性能，5%的PE-g-MAH和10%的POE-g-MAH对复合膜的综合性能提升最大，这2种相容剂的加入改善了PA6与LDPE之间相容性差的缺点，提高了连续相和分散相结合的牢固度，使得复合膜在−40 ℃下的抗拉强度比PA6薄膜分别提高41.57%和40.13%，断裂伸长率分别提高40.5%和60.13%。同时，相容剂的加入改善了PA6吸水性强的缺点，复合膜的吸水性能、水蒸气透过性和疏水性都得到提高。结论 在PA6/LDPE复合膜中加入质量分数为5%的PE-g-MAH或10%的POE-g-MAH对复合膜的综合性能提升最大，PA6/LDPE/PE-g-MAH 5%和PA6/LDPE/POE-g-MAH 10%复合膜在低温下仍能保持良好的刚性和韧性，同时提高了复合膜的吸水性能和水蒸气阻隔性能。 |
| 英文摘要: |
| The work aims to develop a composite film that can maintain good mechanical properties at low temperature, and provide a reference for solving the problem that the plastic packaging of prefabricated vegetables and other products is prone to embrittlement at low temperature, resulting in easy breakage during transportation. The film was prepared by blending polyamide 6 (PA6) with low density polyethylene (LDPE) in a certain proportion. With maleic anhydride grafted polyethylene (PE-g-MAH) and maleic anhydride grafted polyolefin elastomer (POE-g-MAH) as compatibents, the effects of different additive amounts of compatibents on the properties of the composite film were investigated. Then, the film was characterized through the light transmission properties, mechanical properties, water contact angle, water absorption properties, barrier properties, Fourier infrared spectroscopy, Search Engine Marketing (SEM) and Differential Scanning Calorimetry Differential Scanning Calorimetry (DSC). The addition of compatibilizers could improve the performance of PA6/LDPE blend system and 5% PE-g-MAH and 10% POE-g-MAH could improve the comprehensive performance of the composite film. The addition of these two compatibilizers could improve the poor compatibility between PA6 and LDPE, and enhance the combination firmness of continuous phase and dispersed phase. The tensile strength of the composite film at −40 ℃ was 41.57% and 40.13% higher than that of the PA6 film, and the elongation at break increased by 40.5% and 60.13%, respectively. At the same time, the addition of compatibilizer improved the water absorption of PA6, and the water absorption, water vapor permeability and hydrophobicity of the composite film were improved. Adding 5% PE-g-MAH or 10% POE-g-MAH into PA6/LDPE composite film has the greatest improvement on the overall performance of PA6/LDPE composite film. PA6/LDPE/PE-g-MAH 5% and PA6/LDPE/POE-g-MAH 10% composite films can still maintain good rigidity and toughness at low temperature, while improving their water absorption and water vapor barrier properties. |
|
查看全文
查看/发表评论 下载PDF阅读器 |
| 关闭 |
|
|
|
渝公网安备 50010702501716号