The effects of cooling condition on the spinning quality and the mechanical properties of PP spunbonded nonwovens in the production are studied. 研究了在聚丙烯紡絲成網非織造布生產中，冷卻條件對紡絲性能及非織造布物理機械性能的影響。
Intermediate bitumen with good spinning property was manufactured from heavy diesel fuel by heat treatment under normal pressure.Spinning was studied via liquidation method. 以催化裂解重柴油為原料，用常壓熱處理方法製備具有良好紡絲性能的中間相瀝青，並用熔融法進行紡絲試驗。
