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首頁 > 鋼管百科 > 什么是酚醛環氧樹脂?

什么是酚醛環氧樹脂?

日期:2020-02-17

酚醛樹脂是由苯酚和甲醛反應生成的。環氧氯丙烷和諾沃拉克反應生成諾沃拉克和縮水甘油殘基,如環氧苯酚諾沃拉克(EPN)或環氧甲酚諾沃拉克(ECN)。

什么是酚醛環氧樹脂

這些高粘性到固體的樹脂通常每個分子帶有2到6個環氧基。通過固化,由于這些樹脂的高官能性,形成了具有高溫度和耐化學性但機械柔韌性低的高度交聯的聚合物。

酚與甲醛的反應和隨后的環氧氯丙烷縮水甘油化產生環氧化的酚醛清漆,如環氧酚醛清漆(EPN)和環氧甲酚酚醛清漆(ECN)。這些是高粘度的固體樹脂,具有典型的平均環氧官能度約為2至6。這些樹脂的高環氧官能度形成高度交聯的聚合物網絡,顯示耐高溫和耐化學性,但低柔性。

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