| Abstract: | 本文主要探討改變各項如凝固時間、凝固浴DMF濃度、上膠厚度條數生產製程參數對薄膜的物理性質影響，發現改變凝固時間時，隨著凝固時間的延長，薄膜的耐水壓值會逐漸地下降，在透濕性的部分會以先上升再下降的趨勢，成品厚度也會與透濕性相同呈現拋物線的趨勢由低向高在逐漸下降，主要影響原因都會與樹脂孔洞凝固置換的程度有關。
再來是改變凝固浴中的DMF濃度對薄膜的物理性質影響，發現隨著凝固浴DMF濃度的提升，薄膜的耐水壓值、透濕性及成品厚度都會逐漸下降，其影響原因為在低DMF濃度的凝固浴下會更加促進進行樹脂凝固及孔洞形成置換，降低薄膜被DMF腐蝕的程度，在低的凝固浴濃度下能有較好的凝固表現，最後對於上膠厚度對物理性質的影響則是較高的上膠厚度會有效的提升薄膜的耐水壓值及厚度，因為提升樹脂的含量對於薄膜整體機械性會有直接的增加，但因為較厚的薄膜會不利於薄膜在透濕性，故在透濕性的表現上會隨著上膠厚度的提升而下降。
This study mainly discusses the influence of various production parameters such as the thickness of coating, glue coagulation time, and concentration of DMF in coagulation bath, on the film physical properties.
The most important for film moisture permeability with depends on the film thickness. A thinner film, higher film moisture permeability. When discuss on effect of changing the DMF concentration in the coagulation bath on the film physical properties, this study found that increase the DMF concentration decrease water resistance, moisture permeability and finished film thickness on the textile. The reason is lower DMF concentration will help PU resin coagulation to accelerating phase change for porous formation in the coagulation bath. A higher PU glue thickness effectively improves the water resistance and increase the resin content when coating on the textile, which also directly increase the film mechanical properties. |
