OALib Journal期刊
旋转模塑过程中PVC溶胶物理凝胶化转变的有限元分析
DOI: 10.3724/SP.J.1105.2012.12081
Keywords: PVC溶胶 ,物理凝胶化 ,旋转模塑 ,有限元法 ,溶胶黏度
Abstract:
采用有限元法,数值模拟了成型过程中镍制模具和PVC材料的非稳态温度场,进而得到了PVC材料结构参数的时间演变和空间分布规律,再由结构-性能关系获得了PVC材料的溶胶黏度及其演变特点,在此基础上比较分析了不同增塑剂对PVC材料物理凝胶化转变过程的影响.结果表明,由于热阻不同,靠近模具壁的PVC溶胶升温速率较大,首先发生凝胶化转变;加热过程中,PVC材料的黏度首先降低至最小值,凝胶化转变开始后,PVC树脂和增塑剂之间的相互作用增强,材料黏度迅速升高;不同增塑剂对材料结构参数和溶胶黏度的演变规律有着不同影响.
References
[1] 6 Nakajima N,Ward D W.J Appl Polym Sci,1983,28:807~822 [2] 11 Li R J,McCoy B J,Diemer R B.J Colloid Interface Sci,2005,291:375~387 [3] 13 Boudhani H,Fulchiron R,Cassagnau P.Rheologica Acta,2009,48:135~149 [4] 14 Marcilla A,Garcia J C.Eur Polym J,1998,34:1341~1348 [5] 15 Marcilla A,Garcia J C,Ruiz R,Sanchez S,Vargas C,Pita L,Beltran M I.Int Polym Processing,2005,20:47~54 [6] 16 Mendizabal E,Candia J M,Gonzalez-Alvarez V,Jasso-Gastinel C F,Cruz L.J Vinyl Technol,1994,16:91~95 [7] 17 Greco A,Maffezzoli A,Vlachopoulos J.Adv Polym Technol,2003,22:271~279 [8] 18 Poppe A C.J Vinyl Technol,1987,9:191~196 [9] 19 Dean J A.Lange’s Handbook of Chemistry.13th ed.Translated by Shang J F,Cao S J,Xin W M,Shang J F,Cao S J,Xin W M,Zheng F Y,Lu X M,Lin C Q.Beijing:Science Press,1991.9~36 [10] 1 Marcilla A ,Garcia J C.Eur Polym J,1997,33:357~363 [11] 2 Beall G L.Rotational Molding:Design,Materials,Tooling and Processing.1st ed.Translated by Ma Xiuqing.Beijing:Chemical Industry Press,2004.3~47,117 [12] 3 Persico P,Ambrogi V,Acierno D,Carfagna C.J Vinyl Additive Technol,2009,15:139~146 [13] 4 Lopez J,Balart R,Jimenez A.J Appl Polym Sci,2004,91:538~544 [14] 5 Boudhani H,Laine C,Fulchiron R,Cassagnau P.Rheol Acta,2007,46:825~838 [15] 7 Aoki Y,Hirayama K,Kikuchi K,Sugimoto M,Koyama K.Rheologica Acta,2010,49:1071~1076 [16] 8 Sugimoto M,Hida H,Taniguchi T,Koyama K,Aoki Y.Rheologica Acta,2007,46:957~964 [17] 9 Lü Ruihua(吕瑞华),Zhou Changlin(周昌林),Lei Jingxin(雷景新),Li Qiman(李启满).Chemical Journal of Chinese Universities(高等学校化学学报),2008,29:1050~1055 [18] 10 Zou J J,Su L,You F,Chen G S,Guo S Y.J Appl Polym Sci,2011,121:1725~1733 [19] 12 Kwak S Y.Polym Eng Sci,1995,35:1106~1112 [20] 20 Chen X L,Jia Y X,Sun S,Feng L G,An L J.Polymer,2009,50:6186~6191 [21] 21 Jia Y X,Sun S,Liu L L,Xue S X,Zhao G Q.Polymer,2003,44:319~326 [22] 22 Feng Ligang(冯立刚),Jia Yuxi(贾玉玺),Chen Xiliang(陈希亮),An Lijia(安立佳).Acta Polymerica Sinica(高分子学报),2008,(6):529~536
Full-Text
Contact Us
service@oalib.com
QQ:3279437679
WhatsApp +8615387084133
