door ajonker » di 06 jul 2010, 09:18
Hier wat informatie gevonden over POM en acetal POM:
"POM, with a density of about 1.4 has a melting point of about 170 - 185 °C; When heated, a stench of formaldehyde will occurr. POM will not dissolve in ethanol, acetone and ether, but can be dissolved in dilute alkali and strong acid solution."
"Acetal POM copolymer improved the thermal stability from -40 to 104 ° C and it makes the polymer acid resistant, but still has a poor thermal stability at high temperatures!"
Hier wat informatie gevonden over POM en acetal POM:
"POM, with a density of about 1.4 has a melting point of about 170 - 185 °C; When heated, a stench of formaldehyde will occurr. POM will not dissolve in ethanol, acetone and ether, but can be dissolved in dilute alkali and strong acid solution."
"Acetal POM copolymer improved the thermal stability from -40 to 104 ° C and it makes the polymer [b]acid resistant[/b], but still has a [b]poor[/b] thermal stability at high temperatures!"