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Study on the Evolution Mechanism of the Structure and Properties of ABS in Cycled Fused Deposition Molding (FDM)
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2023-08-21 , DOI: 10.1021/acs.iecr.3c02247 Bofan Shen 1 , Yiwen Hu 2 , Xiuduo Song 2 , Zhenbiao Song 3, 4 , Jiang Liu 3, 4 , Chunfu Sun 3, 4 , Shulai Lu 3, 4 , Jian Kang 1 , Ya Cao 1 , Ming Xiang 1 , Zhuo Zheng 1
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2023-08-21 , DOI: 10.1021/acs.iecr.3c02247 Bofan Shen 1 , Yiwen Hu 2 , Xiuduo Song 2 , Zhenbiao Song 3, 4 , Jiang Liu 3, 4 , Chunfu Sun 3, 4 , Shulai Lu 3, 4 , Jian Kang 1 , Ya Cao 1 , Ming Xiang 1 , Zhuo Zheng 1
Affiliation
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To elucidate the evolution mechanism of the structure and properties of acrylonitrile butadiene styrene (ABS) during the cycled fused deposition molding (FDM) process, five cycles of FDMed ABS were carefully prepared, and the molecular structure and properties of FDMed ABS were characterized. Results showed that with the increase of cycles of FDM, the molecular chain of the polybutadiene (PB) phase broke, color groups on the molecular chain and gelatinous substance were generated, the molecular weight of the acrylonitrile–styrene copolymer (SAN) phase decreased, and the loss of antioxidants and other additives in ABS became serious. The thermal degradation transition temperature, melt flow rate, and mechanical properties of cycled FDMed ABS decreased. Impact section morphology results revealed that after cycled FDM, the voids between layers became larger, and the interfacial strength between the PB phase and the SAN phase decreased. The yellow index of the cycled FDMed ABS increased. The evolution mechanism of cycled FDM on the molecular structure and properties of ABS resin was proposed.
中文翻译：
循环熔融沉积成型（FDM）中ABS结构与性能演化机制研究
为了阐明丙烯腈丁二烯苯乙烯（ABS）在循环熔融沉积成型（FDM）过程中结构和性能的演变机制，精心制备了五次循环的FDMed ABS，并对FDMed ABS的分子结构和性能进行了表征。结果表明，随着FDM循环次数的增加，聚丁二烯（PB）相的分子链断裂，分子链上的颜色基团和凝胶状物质产生，丙烯腈-苯乙烯共聚物（SAN）相的分子量下降， ABS中抗氧化剂和其他添加剂的损失变得严重。循环后的 FDMed ABS 的热降解转变温度、熔体流动速率和机械性能均下降。冲击断面形貌结果表明，循环 FDM 后，层间空隙变大，PB相与SAN相之间的界面强度下降。循环后的 FDMed ABS 的黄色指数增加。提出了循环FDM对ABS树脂分子结构和性能的演化机制。
更新日期：2023-08-21
中文翻译：
循环熔融沉积成型（FDM）中ABS结构与性能演化机制研究
为了阐明丙烯腈丁二烯苯乙烯（ABS）在循环熔融沉积成型（FDM）过程中结构和性能的演变机制，精心制备了五次循环的FDMed ABS，并对FDMed ABS的分子结构和性能进行了表征。结果表明，随着FDM循环次数的增加，聚丁二烯（PB）相的分子链断裂，分子链上的颜色基团和凝胶状物质产生，丙烯腈-苯乙烯共聚物（SAN）相的分子量下降， ABS中抗氧化剂和其他添加剂的损失变得严重。循环后的 FDMed ABS 的热降解转变温度、熔体流动速率和机械性能均下降。冲击断面形貌结果表明，循环 FDM 后，层间空隙变大，PB相与SAN相之间的界面强度下降。循环后的 FDMed ABS 的黄色指数增加。提出了循环FDM对ABS树脂分子结构和性能的演化机制。
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