| 外场作用下聚合物滞后生热效应 |
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| 引用本文： | 曾广胜,瞿金平,刘跃军,许超,徐成.外场作用下聚合物滞后生热效应[J].物理学报,2011,60(1):16401-016401. |
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| 作者姓名： | 曾广胜 瞿金平 刘跃军 许超 徐成 |
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| 作者单位： | (1)湖南工业大学包装新材料与技术重点实验室,株洲 412007; (2)湖南工业大学包装新材料与技术重点实验室,株洲 412007;华南理工大学聚合物新型成型装备国家工程研究中心,广州 510640;华南理工大学聚合物成型加工工程教育部重点实验室,广州 510640; (3)华南理工大学聚合物新型成型装备国家工程研究中心,广州 510640;华南理工大学聚合物成型加工工程教育部重点实验室,广州 510640 |
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| 基金项目： | 国家自然科学基金(批准号:10472034,1090351,10672197),湖南省自然科学基金(批准号:07JJ1001,09JJ6083),国家"十一五"科技支撑计划(批准号:2007BAE45B03),湖南省教育厅科技项目(批准号:08C278)和湖南省普通高校产业化培训项目(批准号:09CY016) 资助的课题. |
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| 摘 要： | 为了研究振动参数对聚合物黏弹性能及塑化成型过程的影响,深入分析了振动场的作用机理,揭示了相位角与滞后生热率之间的关系,得出了振动场作用下聚合物塑化成型速率表达式,最后通过聚对苯二甲酸乙二醇酯(PET)动态毛细管挤出以及多维振动塑化成型设备进行实例计算和实验研究,实验结果和理论计算值符合得很好,并得出结论: PET塑化速率随振动频率的增加呈先增加后减小的趋势,当激振频率趋向于材料固有频率时(振动频率约为15 Hz时),PET塑化速率达到最大值,当振幅为6 MPa时,其值约为22 g/min,为相同振幅下,频
关键词：
振动场
滞后生热
相位角
低温成型
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| 关 键 词： | 振动场 滞后生热 相位角 低温成型 |
| 收稿时间： | 2009-12-22 |
Hysteresis thermogenous process of polymer material under vibrational force field |
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| Zeng Guang-Sheng,Qu Jin-Ping,Liu Yue-Jun,Xu Chao,Xu Cheng.Hysteresis thermogenous process of polymer material under vibrational force field[J].Acta Physica Sinica,2011,60(1):16401-016401. |
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| Authors: | Zeng Guang-Sheng Qu Jin-Ping Liu Yue-Jun Xu Chao Xu Cheng |
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| Institution: | Key Laboratory of New Materials and Technology for Package, Hunan University of Technology, Zhuzhou 412008, China;National Engineering Research Center of Novel Equipment for Polymer Processing, Guangzhou 510640,China;The Key Laboratory of Polymer Processi;National Engineering Research Center of Novel Equipment for Polymer Processing, Guangzhou 510640,China;The Key Laboratory of Polymer Processing Engineering, Ministry of Education, South China University of Technology, Guangzhou 510640, China;Key Laboratory of New Materials and Technology for Package, Hunan University of Technology, Zhuzhou 412008, China;Key Laboratory of New Materials and Technology for Package, Hunan University of Technology, Zhuzhou 412008, China;Key Laboratory of New Materials and Technology for Package, Hunan University of Technology, Zhuzhou 412008, China |
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| Abstract: | A thorough analysis of the mechanism of vibrational force field on polymer processing was carried out to investigate the effect of vibration parameters on polymer viscoelasticity and plastic forming processing. The relationship between phase angle and lagging heat generation rate as well as the expression of polymer plasticizing rate under vibrational force field was obtained. To verify the theory, PET was adopted for example calculation and in expriments with dynamic capillary rheometer and mlti-dimentional vibration induced plastic forming equimpment. The result from calculation agrees well with that from experiment. Besides, it can be concluded that the plasticizing rate of PET increases at first and decreases afterwards with increasing vibration frequency. It reaches the peak at vibration frequency equivalent to the natural frequency of PET of about 15 Hz. The value remains at 22 g/min with the natural vibration frequency when the vibration amplitude is 6 MPa, being 1.75 fold that with vibration frequency of 10 Hz. Therefore, the plasticizing rate of polymer can be significantly improved by increasing the vibration amplitude. The exploration in this paper supplies reliable thoeretical reference for novel polymer low temperature moulding technique and equipments. |
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| Keywords: | vibration force field hysteresis thermogenous phase angle low temperature processing |
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