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影響纏繞膜粘性的主要因素有哪些呢？

作者：兴亚缠绕膜閱讀量：发布日期：2022/12/3 10:38:44

信息摘要：

粘性是拉伸膜最爲關鍵的一個特性，在生産纏繞膜的過程中，不一樣的生産工藝和操作步驟不一樣，纏繞膜的粘性也會不一樣，那麽哪些因素會影響纏繞膜的粘性呢？

1、分子量對拉申纏繞膜粘性的危害

分子量不一样，黏着性能会随着不一样，分子量高的PIB使塑料薄膜具备高些的*后脱离黏着性，可是随这PIB分子量的提升，钢筋搭接黏着力会衰减系数；而分子量太低得话，因为其较容易挥发会造成粘性维持時间过短。因而，挑选适合分子量的PIB才可以促使缠绕膜具备*好性能。研究表明，数均分子量在1300上下的PIB较为适用提升缠绕膜的自粘性。

2、加上量對拉申纏繞膜粘性的危害

纏繞膜的粘性與PIB添加量成成正比。可是，但PIB添加量超出3%以後，纏繞膜自粘性的提升越來越不顯著，若再次提升PIB的添加量，PIB會在膜表層進行析出成塊，導致塑料薄膜自粘性不均勻，乃至膜卷難以開啓。爲了更好地確保纏繞膜的*後性能，並綜合性考慮到原材料成本費難題，PIB的加上量應操縱在1~3%中間。

PIB有一個外滲全過程，一般要三天上下的時間纏繞膜表層才可以造成充足的粘性。

3、拉申纏繞膜存儲溫度對粘性的危害

PIB的遷移速度儲放的溫度相關，自然環境溫度上升，PIB的遷移速率提升，粘性提升。因而，纏繞膜要做到規定的粘性，應在較高的溫度下存儲，且一般應避免一周後就可以做到應用規定。可是長期性存儲在高過30℃自然環境下，PIB會很多進行析出，易造成膜卷偏心大小頭或紙芯滑脫的狀況，因而在做到粘性規定後，應盡可能該放到-15℃~40℃的自然環境下存儲。

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影響纏繞膜粘性的主要因素有哪些呢？

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