Identify thermoplastic and thermosetting plastics by flame test
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To initially determine whether a material is thermoset or thermoplastic, heat a stirring rod (to about 500° F) and press it against the sample. If the sample softens, the material is a thermoplastic; if not, it is probably thermosetting. Next, hold the sample to the edge of a flame until it ignites.
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Explanation:
To initially determine whether a material is thermoset or thermoplastic, heat a stirring rod (to about 500° F) and press it against the sample. If the sample softens, the material is a thermoplastic; if not, it is probably thermosetting. Next, hold the sample to the edge of a flame until it ignites.
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