采用DSC热分析技术和黏度实验方法,研究了真空导入模塑工艺专用不饱和聚酯树脂体系(Palatal1777-G-4)的固化特性和化学流变特性,建立和对比了树脂体系的修正双阿累尼乌斯流变模型和工程黏度模型,并依据所建立的流变模型预报Palatal1777-G-4树脂体系的真空导入模塑工艺操作窗口.对比结果表明:修正双阿累尼乌斯流变模型和工程黏度模型分别能较好地反映树脂体系凝胶点前的低黏度平台特性和凝胶点后的黏度变化规律,结合两模型可有效模拟树脂体系在不同工艺条件下的黏度行为,准确预报树脂体系的低黏度平台工艺窗口,为优化真空导入模塑工艺参数和保证制品质量提供科学依据.模型预测结果表明,Palatal1777-G-4树脂体系在20～38℃温度范围内满足真空导入模塑工艺操作的基本要求,黏度低于300 mPa·s的工艺操作时间长于30 min.
参考文献
| [1] | 杨金水,肖加余,曾竟成,刘钧.真空导入模塑工艺树脂流动规律研究[J].宇航材料工艺,2007,37(5):22-26.Yang Jinshui,Xiao Jiayu,Zeng Jingcheng,Liu Jun.Resin flow behavior of vacuum infusion molding process[J].Aerospace Materials & Technology,2007,37(5):22-26. |
| [2] | Modi D,Correia N,Johnson M,et al.Active control of the vacuum infusion process[J].Composites Part A,2007,38(5):1271-1287. |
| [3] | Brouwer W D,van Herpt E C P C,Labordus M.Vacuum injection moulding for large structural applications[J].Composites Part A,2003,34(6):551-558. |
| [4] | Correia N C,Robitaille F,Long A C,et al.Analysis of the vacuum infusion moulding process Ⅰ:Analytical formulation[J].Composites Part A,2005,36(12):1645-1656. |
| [5] | 梁志勇,段跃新,林云,范欣愉,张佐光.EPON862环氧树脂体系化学流变特性研究[J].复合材料学报,2001,18(1):16-19.Liang Zhiyong,Duan Yuexin,Lin Yun,Fan Xinyu,Zhuang Zuoguang.Study on rheological behaviors of EPON862 epoxy resin system for resin transfer molding[J].Acta Materiae Compositae Sinica,2001,18(1):16-19. |
| [6] | Roller M B.Rheology of curing thermosets:A review[J].Polym Eng Sci,1986,26(6):432-440. |
| [7] | Kiuna N,Lawrence C J,Fontana Q P V,et al.A model for resin viscosity during cure in the resin transfer moulding process[J].Composites Part A,2002,33(11):1497-1503. |
| [8] | Maazouz A,Dupuy J,Seytre G.Polyurethane and unsaturated polyester hybrid networks:Chemorheological and dielectric study for the resin transfer molding process (RTM)[J].Polym Eng Sci,2000,40(3):690-701. |
| [9] | 路遥,段跃新,梁志勇,张佐光.钡酚醛树脂体系化学流变特性研究[J].复合材料学报,2002,19(5):33-37.Lu Yao,Duan Yuexin,Liang Zhiyong,Zhang Zuoguang.Studies on rheological behaviors of phenolic resin system for resin transfer molding[J].Acta Materiae Composhae Sinica,2002,19(5):33-37. |
| [10] | Tungare A V,Martin G C,Gotro J T.Chemorheological characterization of thermoset cure[J].Polym Eng Sci,1988,28(16):1071-1075. |
| [11] | Gutowski T G.Advanced composites manufacturing[M].New York:John Wiley & Sons Inc,1997. |
| [12] | 梁志勇,段跃新,林云,肇研,路遥,张佐光.乙烯基酯树脂体系流变特性及RTM工艺窗口预报研究[J].材料工程,2001(8):36-39.Liang Zhiyong,Duan Yuexin,Lin Yun,Zhao Yan,Lu Yao,Zhang Zuoguang.Rheological model and processing window of vinyl ester resin system for RTM process[J].Journal of Materials Engineering,2001(8):36-39. |
| [13] | 石凤,段跃新,梁志勇,张佐光.RTM专用双马来酰亚胺树脂体系化学流变特性[J].复合材料学报,2006,23(1):56-62.Shi Feng,Duan Yuexin,Liang Zhiyong,Zhang Zuoguang.Rheological behavior of a bismaleimide resin system for RTM process[J].Acta Materiae Compositae Sinica,2006,23(1):56-62. |
| [14] | Rudd C D,Long A C,Kendall K N,Mangin C G E.Liquid moulding technologies[M].London:Woodhead Publishing Ltd,1997. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%