| 软包装材料微观结构与溶剂残留研究 |
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| 引用本文： | 李东立,张敬勇,许文才,付亚波.软包装材料微观结构与溶剂残留研究[J].包装工程,2013,34(7):1-6. |
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| 作者姓名： | 李东立 张敬勇 许文才 付亚波 |
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| 作者单位： | 北京印刷学院印刷包装材料与技术北京市重点实验室 |
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| 基金项目： | 北京市教委人才强教项目(IHLB No.PXM2010_014223_095557);科委面上项目(KM201110015001,KM2012 1001 5003);实验室建设项目(PXM2012_014223_000039);“高分子物理相似相容原理的实践教学”教改项目 |
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| 摘 要： | 用纳米二氧化硅与聚丙烯树脂熔融共混,通过改变聚丙烯的结晶度、玻璃化转变温度、溶度参数的手段,来降低聚丙烯对有机溶剂的吸附性、溶解性和扩散性,进而降低印刷后聚丙烯薄膜中有机溶剂的残留。实验表明,纳米二氧化硅能够明显提高聚丙烯的结晶度,提高其玻璃化转变温度,降低聚丙烯无定形区的比例,改性后的聚丙烯不但对非极性溶剂表现出低的残留值,而且对常见极性溶剂的溶解性也有较大程度的降低。
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| 关 键 词： | 溶剂残留 聚丙烯 包装材料 玻璃化转变温度 溶度参数 |
| 收稿时间： | 2012/12/7 0:00:00 |
| 修稿时间： | 2013/4/10 0:00:00 |
Research on Microstructure and Solvent Residue of Flexible Packaging Material |
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| LI Dong-li,ZHANG Jing-yong,XU Wen-cai and FU Ya-bo.Research on Microstructure and Solvent Residue of Flexible Packaging Material[J].Packaging Engineering,2013,34(7):1-6. |
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| Authors: | LI Dong-li ZHANG Jing-yong XU Wen-cai and FU Ya-bo |
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| Affiliation: | (Beijing Key Lab of Printing & Packaging Materials and Technology,Beijing Institute of Graphic Communication,Beijing 102600,China) |
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| Abstract: | Polypropylene resin was melt blending with nano-silica to reduce the adsorption, solubility, and diffusivity of polypropylene against organic solvent by means of changing crystallinity, glass transition temperature, and solubility parameter of polypropylene. As a result, the solvent residue value of polypropylene film after printing was reduced. The experiments showed that nano-silica can significantly improve crystallinity and glass transition temperature of polypropylene, and reduce the proportion of amorphous region; the modified polypropylene shows a low residual value against not only non-polar solvent but also common polar solvent. |
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| Keywords: | solvent residue polypropylene packaging materials glass transition temperature solubility parameter |
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