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DMA test condition!

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RezaUU
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(@rezauu)
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Dear Jorgen

Thanks a lot for sharing your knowledge about mechanics of polymers!

I have a question regarding the condition of DMA tests in term of relative humidity (RH).

How important is to keep the RH constant when one changes the T in each DMA test? Does it depend on the type of material ? Or If each DMA test is relatively short, then maybe the RH effect can be ignored?

Best regards,Reza

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Jorgen
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(@jorgen)
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Most people ignore the influence of the relative humidity during a DMA test. For most materials it is a second order effect.

/Jorgen

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