Effect of mixing time of coupling agent on properties of 3D printing prototype of fly ash filled ABS

Abstract

Fly ash was modified by being mixed with silane coupling agent for 10min, 20min, 30min, 40min and 50min. Pure ABS, compounded materials consisting of unmodified and modified fly ash and ABS were extruded into filaments. 3D printed specimens were manufactured with extruded filaments. Results show, ABS filaments have good 3D printing process and product performance and unmodified fly ash is harmful to ABS filaments. To improve interface bonding between ABS and fly ash, silane coupling agent can be introduced, and mixing it with fly ash for 30min may be a better choice, which has better dimension stability, impact strength and tensile strength.