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題名 | 延長不飽和聚酯塗料可使用時間之研究(1)--硬化劑配方與塗裝方式對塗料硬化反應與乾燥時間之影響=Study on the Extension of Pot-Life for Unsaturated Polyester Coating(Ⅰ)--Effect of Catalyst/Promoter Ratios and Finish Patterns on the Curing Reaction and Drying Time of Coating |
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作 者 | 盧崑宗; 劉正字; | 書刊名 | 林產工業 |
卷期 | 16:2 1997.06[民86.06] |
頁次 | 頁169-179 |
分類號 | 474.33 |
關鍵詞 | 不飽和聚酯塗料; 可使用時間; 混合塗裝法; 預塗法; 三明治式塗裝法; 硬化反應; 乾燥時間; 膠化時間; Unsaturated polyester coating; Pot-life; Mix finish; Prefinish; Sand wich finish; Curing reaction; Drying time; Gel time; |
語文 | 中文(Chinese) |
中文摘要 | 為了解決不飽和聚酯塗料可使用時間太短的缺點,使此種具有優良特性的塗料, 能為業界所樂意採用; 本研究乃探討不同催化劑 (MEKPO) / 促進劑 (Co) 之配合 (MEKPO:0.5%、0.75%、1.0%、2.0%、Co:0.25%、0.5%、1.0%,共得 12 種配合條件 ),對塗 料可使用時間之差異, 以及不受可使用時間限制之預塗法 (A → B 及 B → A) 及三明治 式塗裝法 (A → B → A 及 B → A → B) 與兩液混合 (MIX) 後塗裝方式之乾燥時間與塗 膜狀態之比較 (A 液:樹脂+苯乙烯+ Co,B 液:樹脂+苯乙烯+ MEKPO),以尋求塗料之 最佳配方與合適之塗裝方法。試驗結果得知,本研究所採用之 MEKPO/Co 配合的各種條件中 ,其膠化時間最長者僅達 25 分鐘 (即 MEKPO:0.5%、Co:0.25%),其餘大都在 10 分鐘以內 ,無法配合工廠之作業性,所以兩液混合之塗裝,作業上較為困難:又預塗法與三明治式塗 裝法中,以 B 液為最上層者,即 A → B 及 B → A → B 者,塗膜均呈粘著狀態,無法乾 燥,而塗膜可乾燥的 B → A 及 A → B → A 塗裝樣式中,B → A 者塗膜較易全面起皺或 邊緣起皺,而 A → B → A 者,雖其乾燥時間稍慢,但塗膜平滑度足以媲美 MIX 塗裝者。 各種催化劑 / 促進劑之不同比例,及各種塗裝樣式之其他塗膜性質,將於第二報中敘述。 |
英文摘要 | In order to solve the problem of very short pot-life of unsaturated polyester coating, various ratios of catalyst(MEKPO)/promoter(Co) and three kinds of finish pattern were studied. The MEKPO/Co ratios included 12 conditions were composed from MEKPO:0.5%,0.75%,1.0% 2.0% and Co:0.25%,0.5%,1.0%,.The finish patterns included prefinish (A → B and B → A), sandwich finish(A → B → A and B → A → B) and mix finish (A + B), The re sults are summarized as follows: 1.In this study, the gel time of coating using MEKPO:0.5%,Co:0.25% could reach 25 min only,and the other ratios of MEKPO/Co were beolw 10 min mostly. Obviousely, the mix finish(A+B) had inferior workability and can not be adopted to finish procedure for factory. 2.In the finish pattern, if the top layer was B component (resin +styrene MEKPO) i.e. A → B(one of the prefinishes), B → A → B(one of the sandwhich finished) their film remained stickness and could not dry completely. 3.Among the completely dried film of B → A,A → B → A and mix finish patterns, the film of B → A pattern wrinkled easily in all or edge. Although, the drying time of A → B → A pattern was slightly slower than mix finish, but the smoothness of film could be compared favorably with the mix finish pattern. |
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