| 高剪切应力诱导引发马来酸酐官能化三元乙丙橡胶 |
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| 引用本文： | 张玲,张云灿,姚虎卿. 高剪切应力诱导引发马来酸酐官能化三元乙丙橡胶[J]. 合成橡胶工业, 2009, 32(1) |
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| 作者姓名： | 张玲 张云灿 姚虎卿 |
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| 作者单位： | 南京工业大学,材料科学与工程学院,江苏,南京,210009;南京工业大学化学化工学院,江苏,南京,210009 |
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| 摘 要： | 在熔融挤出过程中,采用提高双螺杆挤出机螺杆转速所产生的高剪切应力诱导引发的方法及添加引发剂与提高螺杆转速的复合引发方法,研究了三元乙丙橡胶(EPDM)与马来酸酐(MAH)的官能化反应.结果表明,双螺杆挤出机的高螺杆转速所产生的高剪切应力作用可诱导EPDM的断链反应,引起官能化产物黏均相对分子质量的明显减小及接枝率与熔体流动速率的明显增大;在适量过氧化物类引发剂存在的条件下,此种高剪切应力作用可抑制EPDM官能化过程中的交联副反应,使产物的凝胶含量明显下降,接枝率及熔体流动速率明显增大;此种官能化反应过程易于控制,可制得接枝率0.80%～1.13%、熔体流动速率0.11～0.28 g/min及凝胶质量分数不大于1.0%的MAH官能化EPDM.
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| 关 键 词： | 高剪切应力诱导引发 三元乙丙橡胶 马来酸酐 官能化 引发剂 |
Functionalization of ethylene propylene diene monomer with maleic anhydride in melt state through high shear stress-induced initiation |
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| Zhang Ling,Zhang Yuncan,Yao Huqing. Functionalization of ethylene propylene diene monomer with maleic anhydride in melt state through high shear stress-induced initiation[J]. China Synthetic Rubber Industry, 2009, 32(1) |
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| Authors: | Zhang Ling Zhang Yuncan Yao Huqing |
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| Affiliation: | 1. College of Materials Science and Engineering;Nanjing University of Technology;Nanjing 210009;China;2. College of Chemistry and Chemical Engineering;China |
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| Abstract: | The functionalization reactions of ethylene propylene diene monomer(EPDM) with maleic anhydride(MAH) were investigated in melt state through the high shear stress-induced initiation by increasing the screw rotation speed of twin-screw extruder and the initiation by both adding some initiator and increasing the screw rotation speed as well.The results showed that with the increase of screw rotation speed and reaction temperature,the grafting ratio and the melt flow rate of the functionalized products(EPDM-g-... |
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| Keywords: | high shear stress-induced initiation ethylene propylene diene monomer malefic anhydride functionalization initiator |
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