| 扩链剂对反应挤出回收PET瓶分子量的影响 |
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| 引用本文： | 张素文,王益龙,滕福成,王兴兴. 扩链剂对反应挤出回收PET瓶分子量的影响[J]. 高分子材料科学与工程, 2008, 24(2): 119-123 |
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| 作者姓名： | 张素文 王益龙 滕福成 王兴兴 |
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| 作者单位： | 大连理工大学化工学院高分子材料系,辽宁,大连,116012;大连理工大学化工学院高分子材料系,辽宁,大连,116012;大连理工大学化工学院高分子材料系,辽宁,大连,116012;大连理工大学化工学院高分子材料系,辽宁,大连,116012 |
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| 摘 要： | 分别使用双口恶唑啉(BOZ)、均苯四酐(PMDA)及两者的混合物作为回收PET瓶的扩链剂,研究扩链剂的种类、扩链剂用量和反应挤出机加工工艺条件对PET产品相对分子质量(η)的影响。实验结果表明:在扩链剂用量均为0.2%(质量分数)时,BOZ可使产品的η提高4600 g/mol;BOZ和PMDA联用有一定的扩链效果,但不够理想;而使用PMDA可使产品的η提高9300 g/mol,达到33300 g/mol,扩链效果显著。使用PMDA为扩链剂时,反应挤出机的最佳工艺条件为:反应段温度260℃、螺杆转速45 r/min、真空度0.1 MPa。
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| 关 键 词： | 回收PET瓶 反应挤出 扩链 |
| 文章编号： | 1000-7555（2008）02-0119-05 |
| 收稿时间： | 2006-09-02 |
| 修稿时间： | 2007-03-21 |
Effect of Chain Extenders on Molecular Weight of Recycled PET Bottles During Reactive Extrusion Processing |
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| ZHANG Su-wen,WANG Yi-long,TENG Fu-cheng,WANG Xing-xing. Effect of Chain Extenders on Molecular Weight of Recycled PET Bottles During Reactive Extrusion Processing[J]. Polymer Materials Science & Engineering, 2008, 24(2): 119-123 |
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| Authors: | ZHANG Su-wen WANG Yi-long TENG Fu-cheng WANG Xing-xing |
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| Affiliation: | (Dept.of Polymer Materials,Dalian University of Technology,Dalian 116012,China) |
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| Abstract: | The influence of chain extender kind,content and reactive processing condition on molecular weight(η) of recycled PET was studied carefully based on chain extenders of 2,2’-Bis(2-oxazoline)(BOZ),Pyromellitic dianhydride(PMDA) and the mixture of the both during reactive extrusion processing.The results showe that η of recycled PET is increased 4600g/mol when the amount of BOZ is 0.2%;η of 33300 g/mol can be obtained when PMDA is employed,9300 g/mol higher than the average η of raw material.The optimal reactive condition is as follows: PMDA,reactive zone 260℃,screw rotation speed of 45 r/min,vacuum degree of 0.1 MPa. |
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| Keywords: | recycled PET bottles reactive extrusion chain extension |
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