微孔材料;MICROPOROUS MATERIAL

摘要

微孔材料被描述，其包含热塑性有机聚烯烃聚合物(例如，超高分子量聚烯烃，诸如，聚乙烯)、颗粒填料(例如，沉淀二氧化矽)，及一互连孔隙网路。本发明之微孔材料拥有受控的挥发性材料转移性质。微孔材料可具有至少0.8克/公分 3 之密度；及从0.04至0.6毫克/(小时*公分 2 )之从微孔材料之挥发性材料接触表面转移至蒸气释放表面之挥发性材料转移速率。此外，当挥发性材料从挥发性材料接触表面转移至蒸气释放表面时，蒸气释放表面系实质上无呈液体型式之挥发性材料。; and a volatile material transfer rate, from the volatile material contact surface to the vapor release surface of the microporous material, of from 0.04 to 0.6 mg / (hour* cm 2 ). In addition, when volatile material is transferred from the volatile material contact surface to the vapor release surface, the vapor release surface is substantially free of volatile material in liquid form.