文章摘要
粉末改性NR对PVC的增韧作用
Toughening Effect of Modified NR Powder on PVC
  
DOI：
中文关键词: 粉末改性NR  PVC  共混体  增韧作用  冲击强度
英文关键词: PVC  modified NR powder  blend  toughening effect  impact strength
基金项目:国家自然科学基金资助项目和广东省自然科学基金资助项目
作者单位
王炼石 华南理工大学材料学院高分子系 
高智梅 华南理工大学材料学院高分子系 
周奕雨 华南理工大学材料学院高分子系 
蔡彤旻 华南理工大学材料学院高分子系 
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中文摘要:
      用粒径小于0.9 mm的粉末改性NR(PMNR)与PVC共混，研究共混体的力学性能及PMNR的性质对共混体冲击强度的影响。试验结果表明，PMNR对PVC有显著的增韧效果，PMNR用量由2.5份增大到5份，共混体的Charpy式缺口冲击强度由5.1 kJ·m-2提高到64.3 kJ·m-2。用扫描电镜进行的冲击断面形貌分析表明，共混体的增韧机理为剪切屈服机理。
英文摘要:
      The modified NR powder(PMNR)with the particle diameter less than 0.9 mm was blended with PVC to study the toughening effect of PMNR on PVC.The mechanical properties of the blends were investigated.It was found that the PMNR had notable toughening effect on PVC.The notched Charpy impact strength of the blend increased from 5.1 kJ·m-2 to 64.3 kJ·m-2 as the content of PMNR increased from 2.5 parts to 5 parts.The impact fractured surface morphology on SEM showed that the toughening mechanism of the blend was in accordance with that of the shear yielding.
Author NameAffiliation
Wang Lianshi South China University of Technology 
Gao Zhimei South China University of Technology 
Zhou Yiyu South China University of Technology 
Cai Tong South China University of Technology 
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