PLA/E-MA-GMA/PBS/talc共混物耐热性能研究

刘志刚, 边俊甲, 郇月伟, 李俊文, 孙丽娜, 周魏华, 颜祥禹

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塑料科技 ›› 2024, Vol. 52 ›› Issue (07) : 115-120. DOI: 10.15925/j.cnki.issn1005-3360.2024.07.025
生物与降解材料

PLA/E-MA-GMA/PBS/talc共混物耐热性能研究

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Study on the Heat Resistance Performance of PLA/E-MA-GMA/PBS/talc Blends

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摘要

研究旨在通过共混改性的方法提升聚乳酸（PLA）的耐热性。在PLA中加入乙烯-丙烯酸甲酯-甲基丙烯酸缩水甘油酯（E-MA-GMA）、聚丁二酸丁二醇酯（PBS）和滑石粉（talc），通过熔融共混改性的加工方法制备PLA/E-MA-GMA/PBS/talc共混物，研究不同组分PLA/E-MA-GMA/PBS/talc含量对共混材料力学性能、流动性能、流变性能、耐热性能的影响。结果表明：随着PLA/E-MA-GMA/PBS/talc共混物体系的变化，共混物的拉伸强度逐渐降低，韧性和冲击强度逐渐升高，说明共混材料之间存在部分增韧及相容性；未结晶处理共混物的热变形温度变化不大，基本上维持在55 ℃左右，结晶处理的共混物热变形温度普遍大于90 ℃。

Abstract

The study was to improve the heat resistance of polylactic acid (PLA) through blending modification. Ethylene-methyl acrylate-glycidyl methacrylate (E-MA-GMA) and poly(butylene succinate) (PBS) and talc powder (talc) were added to PLA matric to prepare PLA/E-MA-GMA/PBS/talc blends. The effects of PLA/E-MA GMA/PBS/talc content on the mechanical properties, flowability, rheological properties, heat resistance of the blends were studied. The results show that with the change of PLA/EMAGMA/PBS/ talc blend system, the tensile strength of the blends gradually decreases, while the toughness and impact strength gradually increase, indicating the existence of partial toughening and compatibility between the blend materials. Theheat deflection temperature of the untreated blends remains relatively stable at around 55 ℃, while the heat deflection temperature of the crystallized blends is generally higher than 90 ℃.

关键词

聚乳酸 / 乙烯-丙烯酸甲酯-甲基丙烯酸缩水甘油酯 / 聚丁二酸丁二醇酯 / 耐热性能

Key words

Poly(lactic acid) / Ethylene-methyl acrylate-glycidyl methacrylate / Poly(butylene succinate) / Heat resistance

中图分类号

TQ323.4

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刘志刚 , 边俊甲 , 郇月伟 , 等. PLA/E-MA-GMA/PBS/talc共混物耐热性能研究. 塑料科技. 2024, 52(07): 115-120 https://doi.org/10.15925/j.cnki.issn1005-3360.2024.07.025
LIU Zhi-gang, BIAN Jun-jia, HUAN Yue-wei, et al. Study on the Heat Resistance Performance of PLA/E-MA-GMA/PBS/talc Blends[J]. Plastics Science and Technology. 2024, 52(07): 115-120 https://doi.org/10.15925/j.cnki.issn1005-3360.2024.07.025

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