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(wǎng)非織造布生產(chǎn)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，用常壓熱處理方法制備具有良好紡絲性能的中間相瀝青，并用熔融法進(jìn)行紡絲試驗。
