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首页> 外文期刊>Journal of polymer engineering >Mechanism and solutions of appearance defects on microfluidic chips manufactured by UV-curing assisted injection molding
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Mechanism and solutions of appearance defects on microfluidic chips manufactured by UV-curing assisted injection molding

机译：UV固化辅助注塑成型微流控芯片外观缺陷的机理及解决方法

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摘要

A novel method for the chemical manufacturing UV-curing assisted injection molding was proposed in this paper. A prototype of UV-curing injection molding apparatus has been manufactured. By using the prototype, we have successfully fabricated microfluidic chips, which can be practically applied in micro mixing experiments. Similar to the thermoplastic parts molded by traditional injection molding, the appearance defects such as bubbles also occurred on products fabricated by UV-curing injection molding. The generation process of bubble defect has been observed and captured through the visualization device. Because there is no gas produced in the polymerization chemical reaction, the shrinkage was considered to be the essential reason of bubble defect. In this paper, the solution of bubble defect was studied by employing single factor control variable method from the aspects of process parameters, materials, and mode of irradiation. It was noted that the bubble defect could be improved by increasing holding pressure, reducing irradiation intensity, and improving viscosity. Nevertheless, the achievement of process parameters was limited. On equal experimental conditions of process, equipment, and material, results revealed that the dynamic irradiation pattern can improve the feeding capacity significantly in UV-curing injection molding. It is further demonstrated that the bubble defect is caused by the polymerization shrinkage. Eventually, we obtained the microfluidic chips with good surface quality, high dimensional accuracy, and high transparency by UVcuring injection molding. Moreover, it provides a feasible high efficiency and low cost manufacture technology for microfluidic chips in the future.
机译：本文提出了一种化学制造UV固化辅助注射成型的新方法。 UV固化注射成型设备的原型已经制造出来。通过使用原型，我们成功地制造了微流控芯片，可以在微混合实验中实际应用。与通过传统注射成型法成型的热塑性部件相似，在通过紫外线固化注射成型法制成的产品上也会出现外观缺陷，例如气泡。气泡缺陷的产生过程已经通过可视化设备观察到并捕获。因为在聚合化学反应中没有产生气体，所以认为收缩是气泡缺陷的根本原因。本文从工艺参数，材料，辐照方式等方面，采用单因素控制变量法研究了气泡缺陷的解决方法。注意到可以通过增加保持压力，降低辐照强度和提高粘度来改善气泡缺陷。然而，过程参数的实现是有限的。在相同的工艺，设备和材料实验条件下，结果表明，动态辐照模式可以显着提高UV固化注塑成型的进料能力。进一步证明气泡缺陷是由聚合收缩引起的。最终，我们通过UV固化注射成型获得了具有良好表面质量，高尺寸精度和高透明度的微流体芯片。而且，它为将来的微流控芯片提供了一种可行的高效低成本的制造技术。

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  • 来源
    《Journal of polymer engineering》 |2017年第5期|493-503|共11页
  • 作者

    Xie Pengcheng; Hu Lingxiao; He Jianyun; Kang Weijia; Yang Weimin;

  • 作者单位

    Beijing Univ Chem Technol, Coll Mech & Elect Engn, Beijing, Peoples R China;

    Beijing Univ Chem Technol, Coll Mech & Elect Engn, Beijing, Peoples R China;

    Beijing Univ Chem Technol, Coll Mech & Elect Engn, Beijing, Peoples R China;

    Beijing Univ Chem Technol, Coll Mech & Elect Engn, Beijing, Peoples R China;

    Beijing Univ Chem Technol, Coll Mech & Elect Engn, Beijing, Peoples R China|Beijing Univ Chem Technol, State Key Lab Organ Inorgan Composites, Beijing, Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    bubble defect; injection molding; microfluidic chips; UV-curing;

    机译：气泡缺陷;注射成型;微流控芯片;紫外光固化;

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