Standards Development
This standard specifies the continuous measurement method of shrinkage for thermosetting resin and/or UV curable resin.
Cure the resin inside a sample container and continuously measure the changes of sample thickness. Since the horizontal cross-sectional area of resin sample remains constant due to the sidewalls of the sample container, the changes in sample volume are proportional to the changes in the sample thickness. Therefore, shrinkage of resin is calculated from the changes in sample thickness.
In addition to the determination of the curing shrinkage, this continuous measurement technique also allows to see the volumetric changing behaviour of a resin at the time it being irradiated by UV, heated, or cooled during the curing process.
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