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<p>This document specifies two methods for evaluating the melting behaviour of semi-crystalline polymers.</p>
<p>a) Method A: Capillary tube</p>
<p>This method is based on the changes in shape of the polymer. It is applicable to all semi-crystalline polymers and their compounds.</p>
<p>NOTE 1 Method A can also be useful for the evaluation of the softening of non-crystalline solids.</p>
<p>b) Method B: Polarizing microscope</p>
<p>This method is based on changes in the optical properties of the polymer. It is applicable to polymers containing a birefringent crystalline phase. It might not be suitable for plastics compounds containing pigments and/or other additives which can interfere with the birefringence of the polymeric crystalline zone.</p>
<p>NOTE 2 Another method applicable to semi-crystalline polymers is described in ISO 11357‑3.</p>
Reģistrācijas numurs (WIID)
81833
Darbības sfēra
<p>This document specifies two methods for evaluating the melting behaviour of semi-crystalline polymers.</p>
<p>a) Method A: Capillary tube</p>
<p>This method is based on the changes in shape of the polymer. It is applicable to all semi-crystalline polymers and their compounds.</p>
<p>NOTE 1 Method A can also be useful for the evaluation of the softening of non-crystalline solids.</p>
<p>b) Method B: Polarizing microscope</p>
<p>This method is based on changes in the optical properties of the polymer. It is applicable to polymers containing a birefringent crystalline phase. It might not be suitable for plastics compounds containing pigments and/or other additives which can interfere with the birefringence of the polymeric crystalline zone.</p>
<p>NOTE 2 Another method applicable to semi-crystalline polymers is described in ISO 11357‑3.</p>
