POLYETHYLENE POWDER

To provide a polyethylene that has better film transparency, fiber mechanical strength, battery separator mechanical strength and thermal shrinkage.SOLUTION: Provided is a polyethylene powder that has an average circularity of a spherocrystal of 0.3 or more and 0.7 or less and an average skewness of...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	HIRAMI KEISUKE, OKAMOTO MAKOTO, OKITSU NAOYA, UOMI YOSHIHIDE, FUJIWARA AKIO
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	To provide a polyethylene that has better film transparency, fiber mechanical strength, battery separator mechanical strength and thermal shrinkage.SOLUTION: Provided is a polyethylene powder that has an average circularity of a spherocrystal of 0.3 or more and 0.7 or less and an average skewness of circularity of the spherocrystal of -1 or more and 1 or less for the spherocrystal observed at an extrapolated crystallization start temperature + 2.0°C when processed under a predetermined and observed with an optical microscope the state in which the temperature is increased and the temperature is decreased under a predetermined using a hot stage.SELECTED DRAWING: None 【課題】フィルムの透明性や、繊維の機械的強度や、電池用セパレーターの機械的強度及び熱収縮率がより優れる、ポリエチレンを提供すること。【解決手段】所定の＜加工条件＞で加工し、ホットステージを使用して所定の＜測定条件＞で昇温および降温した様子を光学顕微鏡で観察したとき、補外結晶化開始温度＋２．０℃において観察される球晶について、上記球晶の平均円形度が０．３以上０．７以下であり、上記球晶の円形度の歪度平均が－１以上１以下である、ポリエチレンパウダー。【選択図】なし