Abstract：The curing properties and chemorheological behaviors of LSP-8020B unsaturated polyester resin system were studied with DSC analysis and viscosity experiments.A rheological model based on the engineering viscosity equation which was in good agreement with the results of experiments is established and used to simulate the rheological behavior of LSP-8020B resin system.The processing window of LSP-8020B resin system can be well determined based on the developed model.The rheological model is important for vacuum infusion molding processing parameter optimization and quality control of integral manufacture for large-scale composite parts.
 BROUWER W D,VAN HERPT E C F C,LABORDUS M.Vacuum injection moulding for large structural applications[J].Composites Part A,2003,34:551-558.  杨金水,肖加余,曾竟成,等.真空导入模塑工艺树脂流动规律研究[J].宇航材料工艺,2007,(5):22-26.  SUMMERSCALES J,SEARLE T J.Low-pressure(vacuum infusion)techniques for moulding large composite structures[J].Journal of Materials:Design and Applications,2005,17:45-58.  CORREIA N C,ROBITAILLE F,LONG A C.Analysis of the vacuum infusion moulding process:I.analytical formulation[J].Composites Part A,2005,36:1645-1656.  梁志勇,段跃新,林云,等.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.  MIJOVIC J,LEE CH.A comparison of chemorheological models for thermoset cure[J].Appl Polym Sci,1989,38:2155-2170.  CASTRO JM,MACOSKO CW.Kinetics and rheology of typical polyurethane reaction injection moulding systems[J].Soc Plast Engng Tech Papers,1980,26:434-438.  BIDSTRUP SA,MACOSKO CW.Chemorheology relations for epoxy/amine cross-linking[J].Polym Sci:Part B:Polym Phys,1990,28:691-709.  ROLLER MB.Rheology of curing thermosets:a review[J].Polym Engng Sci,1986,26:432-440.  石凤,段跃新,梁志勇,等.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.  RUDD C D,LONG A C,KENDALL K N,et al.Liquid moulding technologies[M].London:Woodhead Publishing Ltd,1997.