约束成型基底微观特征对阻聚区及黏附力的影响

王权岱; 梁民; 史卜辉; 李鹏阳; 李言

doi:10.3788/OPE.20202804.0923

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约束成型基底微观特征对阻聚区及黏附力的影响

微纳技术与精密机械 | 更新时间：2020-08-13

- 约束成型基底微观特征对阻聚区及黏附力的影响
- Effect of microscopic characteristics of constrained substrate on the inhibition zone and adhesion
- 光学精密工程 2020年28卷第4期页码：923-932
- 作者机构：
  
  西安理工大学机械与精密仪器工程学院，陕西西安 710048
- 作者简介：
  
  [ "王权岱(1969-)，男，山西临汾人，博士，教授，硕士生导师，2009年于西安交通大学获得博士学位，主要从事3D打印、微纳制造及机械表面科学等方面的研究。E-mail: quandaiw@163.com" ]
  [ "李言(1960-)，男，陕西彬县人，博士，教授，博士生导师，1995年于西北工业大学获得博士学位，主要从事难加工材料及深孔加工、新型加工原理与成形技术等方面的研究。E-mail: ly-jyxy@xaut.edu.cn" ]
- 基金信息：
  
  国家自然科学基金资助项目(No.51775431);国家自然科学基金资助项目(No.51675422);国家自然科学基金资助项目(No.51375381)
- DOI：10.3788/OPE.20202804.0923
  中图分类号： O435.1;TB133
- 收稿日期：2019-08-27，
  
  修回日期：2019-10-25，
  
  录用日期：2019-10-25，
  
  纸质出版日期：2020-04-15
- 稿件说明：
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王权岱, 梁民, 史卜辉, 等. 约束成型基底微观特征对阻聚区及黏附力的影响[J]. 光学精密工程, 2020,28(4):923-932.

Quan-dai WANG, Min LIANG, Bo-hui SHI, et al. Effect of microscopic characteristics of constrained substrate on the inhibition zone and adhesion[J]. Optics and precision engineering, 2020, 28(4): 923-932.
王权岱, 梁民, 史卜辉, 等. 约束成型基底微观特征对阻聚区及黏附力的影响[J]. 光学精密工程, 2020,28(4):923-932. DOI： 10.3788/OPE.20202804.0923.

Quan-dai WANG, Min LIANG, Bo-hui SHI, et al. Effect of microscopic characteristics of constrained substrate on the inhibition zone and adhesion[J]. Optics and precision engineering, 2020, 28(4): 923-932. DOI： 10.3788/OPE.20202804.0923.

摘要

为了减小约束投影快速3D打印工艺中黏附力对工艺可靠性及打印速度的影响，提出了一种多孔透明支撑板+PDMS膜低成本实现阻聚区的方案，并围绕阻聚区形成的两个关键因素-基底透光性和气体渗透性及其影响阻聚区和黏附力的规律进行研究。通过激光加工方法制备了具有微孔阵列的石英玻璃基底，通过对基底透光性、透氧性以及氧阻聚区厚度的实验测量，研究了基底微观几何特征及光照强度、氧气浓度等工艺要素对阻聚区厚度的影响规律，并通过3D打印试验，初步研究了不同基底条件下固化层在基底的黏附力。结果表明，基底微孔影响基底的透光率以及透氧性能，所制备的具有不同几何特征微孔的基底透光率均大于84%；通过调控氧浓度、光照强度以及基底微结构特征可以控制氧阻聚区的厚度；基底及供氧条件影响阻聚区的厚度从而影响剥离力。采用本文制备的约束基底打印零件过程中可以形成阻聚区，从而显著减小剥离力，在本文的实验条件下，固化层从基底的平均剥离力由26.4 N降至5.4 N。

Abstract

To reduce the influence of adhesion on the process reliability and printing speed in constrained projection fast 3D printing processes. A low-cost constrained substrate scheme was presented with porous transparent support plate and PDMS film for inhibition zone realization. It focused on substrate light transmittance and gas permeability and their influence on the inhibition zone formation and adhesion. The quartz glass substrate with a microporous array was prepared using a laser processing method. The light transmittance

oxygen permeability of the substrate

and thickness of the oxygen inhibition zone were measured experimentally. The influence of the microscopic geometrical characteristics of the substrate on the light transmittance

oxygen permeability

and oxygen inhibition thickness was investigated. 3D printing experiments and a preliminary investigation of the adhesion of the cured layer on the substrate under different substrate conditions were conducted. The results indicate that the micro-pores on the substrate affect the light transmittance and oxygen permeability. The transmittance of the prepared micropores with different geometric features is found to be greater than 84%.The thickness of the oxygen inhibition zone can be controlled by adjusting the oxygen concentration

light intensity

and microstructure of the substrate. The oxygen supply conditions of the substrate affect the thickness of the inhibition zone and subsequently the cued layer peeling force. Adopting the prepared constrained substrateenables the formation of the inhibition layer during printing of the parts and significantly reduces peeling force.The average peeling force of the cured layer from the substrate reduces from 26.4 N to 5.4 N under the experimental conditions in this study.

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