CONFORMAL COATING PROCESS CONTROL AS IT RELATES TO TEMPERATURE AND HUMIDITYAuthor: Timothy Harmon
Company: IEC Electronics Corp.
Date Published: 9/24/2006 Conference: SMTA International
Given the fluid nature of conformal coat, this process is very susceptible to its exposed dispensing application and environmental parameters. To further complicate the task of controlling this process, the dispensing application and environmental parameters maintain a strong variable relationship. Consequently, the process window for performing this application is quite small and requires significant process calibration. This paper will present a series of Design of Experiments related to the important variables of the conformal coating process. Specifically, data and conclusions will be provided to correlate optimal environmental characteristics for spraying conformal coat with some emphasis on relating environmental parameters to the viscosity and specific gravity of the material.
From the experiments presented within this paper, the conformal coating material to be evaluated will be acrylic. Acrylic conformal coat has been chosen for the evaluation because of its two-part material characteristic. The deliverables of the paper will encompass conclusions about optimal process setup and ultimate coating reliability from the aspect of this material type and its subsequent process parameters.
Key Words: conformal coat, viscosity, spray performance.
Members download articles for free:
Not a member yet?
What else do you get when you join SMTA? Read about all of the benefits that go along with membership.
Notice: Sharing of articles is restricted to just your immediate work group. Downloaded papers should not be stored on an external network or shared on the internet.