马来酸酐接枝聚乙烯增强FDM金属3D打印丝材的性能及脱脂工艺研究

doi:10.11896/cldb.24120232

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Abstract The fused deposition modeling (FDM) metal 3D printing technology of high-entropy alloys has the advantages of fast forming speed and suitability for the processing of complex and irregular parts. However, the wire materials have defects such as poor toughness and low hardness during the forming process. In this work, the filament was modified with maleic anhydride grafted polyethylene (PE-g-MAH) as the compatibilizer, and CoCrFeMnNi high-entropy alloy FDM metal 3D printing filaments with different addition amounts of PE-g-MAH were prepared by the melt blending method. The influence of the addition amount of PE-g-MAH on the tensile strength, hardness, thermal stability, fluidity, and microstructure of the wire material was studied; the feasibility of solvent degreasing of silk materials was discussed and the degreasing process was formulated. The results show that PE-g-MAH has achieved performance enhancement for the filament. When the mass ratio of CoCrFeMnNi, binder and PE-g-MAH is 90∶10∶7, the tensile strength and hardness of the filament increase by 464.00% and 10.71%, respectively, compared with those before modification. The addition of PE-g-MAH reduces the melt volume rate (MVR) of the filament by 620.5% and decreases its fluidity. The thermal stability of the silk material has been enhanced. The initial weight loss temperature increases from 162 ℃ to 277 ℃, with an increase of 70.98%. The microstructure analysis of the wire material shows that the addition of PE-g-MAH reduces the exposed metal powder, and the combination of the metal powder with the binder and PE-g-MAH is tighter, and the compatibility improves. After solvent degreasing for 24 hours under the process parameters of degreasing temperature of 70 ℃ and kerosene solvent, 93.0% of the paraffin is removed from the wire material.

Key words： high entropy alloy FDM metal 3D printing wire PE-g-MAH degrease

Published: 25 June 2026 Online: 2026-07-08

CLC number:

TQ323.4

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	Articles by authors
	LU Yixun
	CHENG Xiyun
	CHEN Junwei
	LI Cilin

Cite this article:

LU Yixun,CHENG Xiyun,CHEN Junwei, et al. Study on the Properties and Degreasing Process of PE-g-MAH Reinforced FDM Metal 3D Printing Filaments[J]. Materials Reports, 2026, 40(12): 24120232-5.

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https://www.mater-rep.com/EN/10.11896/cldb.24120232 OR https://www.mater-rep.com/EN/Y2026/V40/I12/24120232

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