定制PLA/ABS混合物与SEBS-g-MA兼容,通过化热处理
Anna Raffaela de Matos Costa1, Carlos Bruno Barreto Luna1, Emanuel Pereira do Nascimento1
1Academic Unit of Materials Engineering, Polymer Processing Laboratory, Federal University of Campina Grande, Av. Aprígio Veloso, 882, Bodocongó, Campina Grande 58429-900, PB, Brazil.
Polymers
|August 26, 2023
概括
这项研究使用SEBS-g-MA兼容剂和回火增强了聚 (乳酸) /烯-丁-烯混合物. 理想的组合提供了更好的冲击强度和热稳定性,适合3D打印细丝.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物科学 聚合物科学
背景情况:
- 聚 (乳酸) (PLA) 和烯-丁-烯 (ABS) 是广泛使用的聚合物.
- 提高PLA/ABS混合物的兼容性和性能对于扩大其应用至关重要.
研究的目的:
- 调查SEBS-g-MA兼容剂和回火对PLA/ABS混合物的影响.
- 分析对形态学,机械,热,热力学和质学属性的影响.
- 为了确定最佳成分,以提高材料性能.
主要方法:
- 使用双螺杆挤出机,用不同度的SEBS-g-MA制备了PLA/ABS混合物.
- 使用X射线衍射 (XRD),扫描电子显微镜 (SEM),热重力测量分析 (TGA) 和机械测试来分析性能.
- 对注射成型样品进行了回火.
主要成果:
- SEBS-g-MA显著提高了冲击强度,并完善了PLA/ABS混合物的形态.
- 化增加了混合物的晶度和热偏移温度 (HDTs).
- 最佳成分 (60/30/10重%PLA/ABS/SEBS-g-MA) 具有较高的冲击强度和HTT,与纯PLA相比,具有更高的热稳定性.
结论:
- SEBS-g-MA作为PLA/ABS混合物的有效兼容剂,增强了冲击强度.
- 化进一步改善了热和机械性能,特别是高温化.
- 优化的PLA/ABS/SEBS-g-MA系统显示了制造3D打印丝的潜力.
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