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環氧樹脂膠的氣泡產生原因及處理措施

  環氧樹脂膠是以環氧樹脂為主體所制得的膠粘劑,在固化后可能會產生起泡的現象,對整體的施膠效果產生影響。通常可采取抽真空、加熱降低黏度、加入稀釋劑降低黏度或加入消泡劑等方式消除。下面天津回天膠廠家表示就為大家介紹一下造成環氧樹脂膠氣泡的原因和相應的處理措施是什么?

  一是調膠過程中或灌膠過程中帶入了氣泡,調膠過程中由于膠水的黏度大或攪拌方式不對很容易將空氣帶入膠液中,如果膠液黏度大的話,氣泡比較難消除。膠液黏度小的話,膠水固化慢的話,氣泡會慢慢的上浮到表面自動消除。

  二是固化過程中產生的氣泡。其主要原因是固化速度過快、放熱溫度高、膠水固化收縮率大,或者膠水中溶劑、增塑劑加量過多都容易在固化過程中產生氣泡。要解決固化過程中的這些問題,就需要進行膠水整體的配方調整了。

  本文由http://www.moozlie.com/整理發布,轉載請注明出處

 

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