首页|PMMA/ASA合金材料改性与工艺优化

PMMA/ASA合金材料改性与工艺优化

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为了满足薄壁化注塑需求,提出了材料与工艺协同优化方法来对塑件进行改性及优化.首先使用熔融共混法制备了聚甲基丙烯酸甲酯(PMMA)/丙烯腈-苯乙烯-丙烯酸酯三元共聚物(ASA)合金改性材料,并分析了乙烯-丙烯酸甲酯-甲基丙烯酸缩水甘油酯(EMA-GMA)、流动改性剂(ST-PA210)和纳米碳酸钙(nano-CaCO3)对PMMA/ASA合金性能的影响,确定了协同优化材料组分范围,再进行材料与工艺协同正交试验.结果表明,EMA-GMA可以改善PMMA/ASA合金的冲击强度,但会导致其他力学性能的下降,ST-PA210 对PMMA/ASA合金的流动性能有显著提升且对力学性能无较大影响,添加 2％～4％的nano-CaCO3可以使PMMA/ASA合金力学性能和流动性能有小幅度提升,当其添加量超过6％时会使合金力学性能和流动性下降;材料与工艺协同优化可增加满足塑件性能需求的组合,降低了塑件对材料性能的依赖,从而降低了生产成本.最后,使用扫描电子显微镜(SEM)对EMA-GMA、ST-PA210 和nano-CaCO3改性PMMA/ASA合金机理进行了分析.
Modifications and Process Optimizations of PMMA/ASA Alloy Materials
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.

Material and Process Collaborative OptimizationPolymethyl Methacrylate/Acrylonitrile-Styrene-Acrylate Terpolymer AlloyInjection Molding

王辉、郑富颢、谷召辉、覃清钰、杨柳、李建亭、曹敏

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武汉理工大学汽车工程学院,湖北 武汉 430070

武汉理工大学现代汽车零部件技术湖北省重点实验室,湖北 武汉 430070

武汉理工大学新能源与智能网联汽车湖北省工程技术中心,湖北 武汉 430070

上汽通用五菱汽车股份有限公司,广西 柳州 545007

襄阳光瑞汽车零部件有限公司,湖北 襄阳 441000

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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

国家自然科学基金委员会国家自然科学基金委员会湖北省重点研发计划科协青年人才托举工程111项目襄阳高新区科技计划项目广西科技重大专项湖北省科技人才服务企业项目武汉理工大学襄阳技术转移中心产业化项目福建省功能材料及应用重点实验室开放基金项目

52472383521753602022BAA0732021QNRC001B17034202203号桂科AA230620632023DJC055WXCJ-20220028fma2023002

2024

10.3969/j.issn.1005-5770.2024.10.007

塑料工业
中蓝晨光化工研究院有限公司

塑料工业

CSTPCD北大核心
影响因子：0.685
ISSN：1005-5770
年,卷(期)：2024.52(10)