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涂料工藝

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環氧丙烯酸漆用裁基丙烯酸樹脂的合成

文章發布于:2021-11-01 作者:昂威涂料 瀏覽次數:

(1)配方
原料名稱 用量(質量份) 原料名稱 用量(質量份)
甲基丙烯酸甲酯 309. 7 異丙苯過氧化氫溶液(濃度80%) 2.5
丙烯酸丁酯 157. 5 二甲苯 247. 0
丙烯酸 57. 7 丁醇 247. 0
過氧化苯甲酰溶液(濃度71%) 2.5    
 
(2)合成工藝
① 甲基丙烯酸甲酯、丙烯酸丁酯、
化氫溶液加入單體配置器中,混合均勻后,轉入滴定器中待用;
② 將二甲苯、丁醇加入反應釜中;
③ 打開Nz,趕走聚合反應釜內的空氣;
④ 繼續通Nz,開動攪拌,升溫到114〜116°C,滴加單體和引發劑混合液,在 2h內滴完,滴加速度應均衡,溫度也要維持恒定;
⑤ 回流溫度下傑溫3h;
⑥ 冷卻、出料。
本品為無色透明液體,黏度15Pa・s,固含量為51.8%,酸值43.4。

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