| EVA对农膜再生料的力学性能及流变性能的影响 |
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| 引用本文： | 赵雪艳,罗学刚,林晓艳.EVA对农膜再生料的力学性能及流变性能的影响[J].中国塑料,2013,27(4):62-66. |
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| 作者姓名： | 赵雪艳 罗学刚 林晓艳 |
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| 作者单位： | 1. 西南科技大学材料科学与工程学院；生物质材料教育部工程研究中心2. 西南科技大学生物质材料教育部工程研究中心 |
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| 基金项目： | 国家“十一五”科技支撑计划(2007BAE42B04) |
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| 摘 要： | 用熔融共混法制备了EVA与农膜再生料（RPE）的共混材料，研究了EVA对农膜再生料的改性作用，并与新料低密度聚乙烯（LDPE）进行了对比研究。对再生料、改性材料和新料进行了力学性能分析、旋转流变分析、转矩流变分析和形貌分析。结果表明，EVA可以显著提高农膜再生料的断裂伸长率，对拉伸强度影响不大，当EVA用量为50%时，改性材料的断裂伸长率和拉伸强度都和新料相当。EVA可以提高再生料的相容性，改善其流变性能和加工性能，使再生料的流变行为接近新料，更容易加工。
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| 关 键 词： | 农膜再生料 乙烯醋酸乙烯酯 力学性能 流变性能 |
| 收稿时间： | 2013-01-25 |
Influence of EVA on the Mechanical and Rheological Properties of Recycled Agriculture Films |
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| ZHAO Xueyan,LUO Xuegang,LIN Xiaoyan.Influence of EVA on the Mechanical and Rheological Properties of Recycled Agriculture Films[J].China Plastics,2013,27(4):62-66. |
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| Authors: | ZHAO Xueyan LUO Xuegang LIN Xiaoyan |
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| Affiliation: | (Engineering Research Center of Biomass Materials,Ministry of Education,Department of Material Science and Engineering,Southwest University of Science and Technology,Mianyang 621010,China) |
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| Abstract: | Blends of recycled agriculture films (RPE) and Ethylene-vinyl acetate (EVA) were prepared by the twin-screw extruder at different ratios and pelletized. RPE served for matrix in this work. Virgin low density polyethylene (LDPE) was used as a contrast. The blends were blowed into thin films by single-screw extrusion. Mechanical and rheological properties of the blends were carefully evaluated and compared with virgin LDPE. The results show the tensile properties of the blends changed a little and elongation at break increased dramaticlly with the addition of EVA. The elongation at break and tensile properties of films made by RPE/EVA(50/50) blend was similar to virgin LDPE. The rheological properties of RPE have improved. The blends show potential applications in good performance products. |
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