快速成型过程中聚合物液滴喷射的无网格模拟及实验研究  

No-grid simulation and experimental research on polymer droplet injection in the process of rapid prototyping

作　　者：郑大龙[1] 闫宝瑞[1] 李亦哲[1] 信春玲[1] 何亚东[1,2] 

机构地区：[1]北京化工大学机电工程学院,北京100029 [2]北京化工大学教育部高分子材料加工装备工程研究中心,北京100029

出　　处：《北京化工大学学报（自然科学版）》2016年第1期72-77,共6页Journal of Beijing University of Chemical Technology(Natural Science Edition)

摘　　要：设计了一种电-液混合驱动的机械撞针式液滴喷射成型系统,研究了该成型系统的各个组成部分及其作用,利用无网格模拟技术模拟了机械撞针式液滴喷射的全过程,通过实验研究了操作工艺参数对液滴喷射的影响规律。实验选用直径为0.25 mm的钨钢喷嘴,实现了高温下黏度为12 Pa·s高黏度聚丙烯(PP)中的喷射成型。Considering that the droplet spray forming of high viscosity materials can be used for 3D printing, a new type of mechanical jet dispenser with an electric-hydraulic hybrid system has been developed. This paper describes the component parts and the function of the molding system, and uses no-grid simulation technology to simulate the process of the mechanical jet dispensing mentioned above. Each operation process parameters has been studied ex- perimentally. A tungsten carbide nozzle with a diameter of 0.25 mm was used to realize a high viscosity of polypro- pylene （PP） （12 Pa·s） in high temperature dispensing and prototyping experiments.

关 键 词：高聚物 液滴喷射 无网格模拟 电-液混合驱动 

分 类 号：TQ320.66[化学工程—合成树脂塑料工业]