CAJ | 학술논문

聚甲基丙烯酸甲酯(P MMA )/聚氯乙烯(PVC)表面复合异型材(以下简称复合异型材)是通过共挤出模头成型，以共挤出模头出口处复合异型材截面上各子区域的流速相等为优化目标，以对流动均匀性有较大影响的压缩段间隙为设计变量，有限元数值分析模拟并和 ERP 系统及并行工程的 CAD/CAE 网络系统挤出模头专家数据库相结合，通过实例设计优化证明，优化后共挤出模头出口处复合异型材熔体各区域流速均匀性显著提高，复合异型材的型胚质量显著提高，其结构尺寸、性能完全符合要求。
취갑기병희산갑지(P MMA )/취록을희(PVC)표면복합이형재(이하간칭복합이형재)시통과공제출모두성형，이공제출모두출구처복합이형재절면상각자구역적류속상등위우화목표，이대류동균균성유교대영향적압축단간극위설계변량，유한원수치분석모의병화 ERP 계통급병행공정적 CAD/CAE 망락계통제출모두전가수거고상결합，통과실례설계우화증명，우화후공제출모두출구처복합이형재용체각구역류속균균성현저제고，복합이형재적형배질량현저제고，기결구척촌、성능완전부합요구。
Polymethyl methacrylate(PMMA)/polyvinyl chloride (PVC)surface composite profile (hereinafter re-ferred to as composite profile)took the equal flow velocity of each sub-domain on the cross section of the com-posite profile at the outlet of the coextrusion die as the optimization target through coextrusion molding.The compression gap that had a huge influence on the flow uniformity was taken as the design variable.The finite el-ement numerical simulation was combined to the ERP system and expert database of the CAD/CAE network system extrusion die in the concurrent engineering.It was testified by the case design optimization that the flow velocity uniformity of each region in the composite profile melt at the outlet of the optimized coextrusion die has been improved greatly,the embryo quality of the composite profile has been improved,and its structure size,as well as the performance satisfies the demands well.