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论文类型：期刊论文

发表时间：2022-06-30

发表刊物：材料科学与工艺

所属单位：机械工程学院

期号：1

页面范围：13-17

ISSN号：1005-0299

摘要：In accordance with the structural features of the cover sheet and substrate sheet for microfluidic chip, a kind of core-pulling mechanism in stationary mold which could be worked before the mold opening was proposed, an injection mold for the incorporate forming of the cover sheet and substrate sheet for microfluidic chip was designed and manufactured, and molding tests were carried out. The results show that the problem to mold and eject the round hole for liquid storage in cover sheets can be solved by use of this kind of mechanism, and the incomplete replication of the microchannels in the substrate sheets is the main technical difficulty to the molding. The mold temperature is the decisive parameter to the replication fidelity of the microchannels, injection rate and melt temperature are the secondary factors, injection pressure is less important than the others, but higher injection pressure is necessary.

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