To meet the needs of thin-walled injection molding,a material and process collaborative optimization method is proposed to modify and optimize plastic parts.First,polymethyl methacrylate(PMMA)/acrylonitrile-styrene-acrylate terpolymer(ASA)alloy modified materials were prepared by using a melt blending method.The effects of ethylene-methyl acrylate-glycidyl methacrylate(EMA-GMA),flow modifier(ST-PA210)and nano-calcium carbonate(nano-CaCO3)on the properties of PMMA/ASA alloys were analyzed to determine the ranges of collaboratively optimized material components.Then a collaborative orthogonal test of materials and processes was conducted.The results show that EMA-GMA could improve the impact strength of PMMA/ASA alloys,but could lead to a decrease in other mechanical properties.ST-PA210 could significantly improve the flowability of PMMA/ASA alloys and have no major impact on the mechanical properties.Nano-CaCO3 with a 2%-4%mass fraction could slightly improve the mechanical properties and flowability of the PMMA/ASA alloys.When the mass fraction exceeds 6%,the mechanical properties and flowability of the alloys would decrease.The collaborative optimization of materials and processes could increase the numbers of combinations that meet the performance requirements of plastic parts,and reduce the dependence of plastic parts on material performances,thereby decreasing the production costs.Finally,scanning electron microscopy(SEM)was used to analyze the mechanisms of EMA-GMA,ST-PA210 and nano-CaCO3 modified PMMA/ASA alloys.
关键词
材料与工艺协同优化/聚甲基丙烯酸甲酯/丙烯腈-苯乙烯-丙烯酸酯三元共聚物合金/注塑
Key words
Material and Process Collaborative Optimization/Polymethyl Methacrylate/Acrylonitrile-Styrene-Acrylate Terpolymer Alloy/Injection Molding
维普
万方数据