• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Vlakna a Textil >DEGRADATION PROPERTIES STUDY OF LDPE AND PLASTICIZED STARCH COMPOSITE BLOWN FILM
【24h】

DEGRADATION PROPERTIES STUDY OF LDPE AND PLASTICIZED STARCH COMPOSITE BLOWN FILM

机译：LDPE和胶凝淀粉复合吹膜的降解性能研究

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The problem of producing polymer materials with accelerated degradation under ambient conditions is particularly relevant today. One of the solutions is forming synthetic - organic polymer composites and the study of properties and peculiarities of they degradation. The study is dedicated to blown films based on low density polyethylene (PE) and thermoplastic starch (TPS) compound, were thermoplastic starch was in situ formed during compounding process. Thermoplastic composite was produced on industrial scale equipment buy using standard filler incorporation techniques - trough filler masterbatch which was mixed with target polymer on film blowing equipment. Modern modification techniques were used during masterbatch production - incorporation of graft copolymer and viscosity reduction agent as well transition metal catalysis. Corn starch was first plasticized with glycerol and then used in powder form for compounding on twin screw extruder with polyethylene and additives. Thermal and pressure treatment during compounding converts plasticized starch to thermoplastic starch homogenously incorporated in polyethylene matrix. Properties changes during degradation of various starch polyethylene composites were studied. The influence of incorporation techniques and various modifying additives on the properties of PE/TPS blown films, such as polyethylene and maleic anhydride grafted polyethylene wax were studied. It was established that the introduction of modifiers leads to a decrease in the viscosity of the composites, and to an increase of the strength and technological properties, and facilitated processing. The rheological properties of modified PE/TPS composites allow the processing using the conventional industrial equipment and technological modes. The reason for the high technological and operational properties of the investigated materials is the increased compatibility of the components of composites due to the influence of modifying additives. An estimation of the properties change of the resulting blown films during degradation in different model environments was carried out. It was established that the use of metal catalysis like ferric stearate significantly increases the intensity of degradation of PE/TPS blown films as a result of initiating the degradation of the PE matrix under the effect of environmental factors. Blown films containing catalysis lose relative tensile strain at yield by 80% after 60 days of stay in the soil which is an important proof of degradation. The results obtained will allow producing polymer films with accelerated environmental degradation and compatibility.
机译：今天，在环境条件下生产具有加速降解作用的聚合物材料的问题尤为重要。解决方案之一是形成合成的有机聚合物复合材料，并研究其降解的特性和特性。该研究致力于在复合过程中原位形成热塑性淀粉的情况下，以低密度聚乙烯（PE）和热塑性淀粉（TPS）为基础的吹塑薄膜。热塑性复合材料是使用标准填料掺入技术在工业规模的设备上购买的-槽式填料母料，在吹膜设备上与目标聚合物混合。母料生产过程中使用了现代改性技术-接枝共聚物和减粘剂的结合以及过渡金属催化。玉米淀粉首先用甘油增塑，然后以粉末形式用于在双螺杆挤出机中与聚乙烯和添加剂混合。混合过程中的热处理和压力处理将增塑淀粉转化为均匀掺入聚乙烯基体的热塑性淀粉。研究了各种淀粉聚乙烯复合材料降解过程中的性能变化。研究了聚乙烯和马来酸酐接枝聚乙烯蜡等掺入技术和各种改性添加剂对PE / TPS吹塑薄膜性能的影响。已经确定的是，改性剂的引入导致复合材料的粘度降低，强度和技术性能的提高，并促进了加工。改性的PE / TPS复合材料的流变性能允许使用常规工业设备和技术模式进行加工。被研究材料具有高技术和操作性能的原因是由于改性添加剂的影响，复合材料组分的相容性增加。对在不同模型环境下降解过程中所得吹塑薄膜的性能变化进行了估算。已经确定，由于在环境因素的作用下引发PE基质的降解，因此使用金属催化如硬脂酸铁显着增加了PE / TPS吹塑膜的降解强度。含有催化作用的吹塑薄膜在土壤中放置60天后，其相对拉伸应变将降低80％的相对拉伸应变，这是降解的重要证据。获得的结果将允许生产具有加速的环境降解和相容性的聚合物膜。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号