文章摘要
尼龙6/半芳香族尼龙阻隔薄膜的制备及特性
Preparation and Characteristics of Nylon 6/Semi-Aromatic Nylon Barrier Film
  
DOI:10.16865/j.cnki.1000-7555.2017.12.023
中文关键词: 尼龙6  半芳香族尼龙  薄膜  阻隔性能  高温蒸煮
英文关键词: nylon 6  semi-aromatic nylon  film  barrier property  high temperature cooking
基金项目:
作者单位
王 启, 林晓燕, 张乐乐, 陈海华 神华宁夏煤业集团有限责任公司甲醇分公司宁夏 银川 750411 
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中文摘要:
      通过尼龙6(PA6)和半芳香族尼龙(MXD6)熔融共混的简单方法制备了一系列的PA6/MXD6共混物,以提高PA6薄膜的阻隔性能。将PA6/MXD6吹塑成膜,利用差示扫描量热法(DSC)、X射线衍射(XRD)、雾度测试和渗透率测试等手段研究了MXD6加入量对薄膜各种性能的影响。此外,考虑到PA6薄膜在耐蒸煮包装领域的应用,文中同时探讨了高温蒸煮对PA6/MXD6共混物薄膜微观结晶结构的影响。PA6/MXD6薄膜的氧气渗透系数会随MXD6的加入而显著降低,明显提高了薄膜的阻隔性,当MXD6用量为20%时达到最佳值;MXD6的加入还显著提高了PA6薄膜的透明性,雾度测试发现PA6/MXD6共混物薄膜的雾度随着MXD6的含量增加而减小,MXD6含量为50%时,其雾度仅为3.59%;DSC和XRD测试结果发现,高温蒸煮过程会提高PA6/MXD6薄膜的结晶度,并促使γ晶型向α晶型转变。熔融共混法利于PA6/MXD6薄膜的大规模生产。
英文摘要:
      A simple method for melt blending of nylon 6(PA6) and semi-aromatic nylon(MXD6) was used to improve the barrier properties of PA6 films. A series of PA6/MXD6 blends were prepared, and then blown into films. The effects of addition of MXD6 on the properties of the PA6/MXD6 films were investigated by DSC, XRD, haze test, permeability test, and so on. In addition, considering the application of PA6 films in the field of anti-cooking and packaging, the effect of high temperature cooking on the microstructure of PA6/MXD6 blends was discussed. The oxygen permeability coefficient of PA6/MXD6 film is significantly reduced with addition of MXD6, improving the barrier property of the films. The best barrier performance is achieved when the content of MXD6 is 20%. The addition of MXD6 can also significantly increase the transparency of the PA6 film, and the tests found that the haze of PA6/MXD6 films is decreased with increasing of the MXD6 content. And the haze of PA6/MXD6 film is only 3.59% when the MXD6 content is 50%. DSC and XRD results indicate that the high temperature cooking process can increase the crystallinity degree of PA6/MXD6 films and promote the transformation of γ crystals to α crystals. PA6/MXD6 films are easy to produce on a large scale, and the basic research on PA6/MXD6 films is of a great significance.
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