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上海富晨化工有限公司

后固化(PostCuring)的必要性

為使FUCHEM高性能樹脂獲得最佳的耐熱性和耐腐蝕性，如接觸食品、強腐蝕性環(huán)境的FRP，后固化是十分必要的。
2021-03-15 14:01:19
為使FUCHEM高性能樹脂獲得最佳的耐熱性和耐腐蝕性，如接觸食品、強腐蝕性環(huán)境的FRP，后固化是十分必要的。推薦的后固化條件是90~100℃，3~6小時——對于厚制品和形狀比較復(fù)雜的制品，后固化時間需要更長。比較低的后固化溫度是沒有效果的，一般可以通過干熱空氣或加熱器進行加溫，同時可以用油布包覆以提高效果。但過高的溫度會導(dǎo)致脆裂，應(yīng)防止局部過熱。在制品制作完畢后，后固化處理應(yīng)盡快進行以提高效率。(The performance of composite can be enhanced by post curing the finished component at elevated temperatures, especially for these used in aggressive environments or for contact with food. For maximum effectiveness, post curing at 90-100℃ should be performed 3-6 hours as soon as possible after the composite has gelled and its exotherm has subsided. For large components, post curing should be practised as soon at the composite structure is completed. This post curing should be done with hot dry air or heater, yet hot spots should be avoided, a good technique for improving heating efficiency is to cover the post curing vessel or laminate with a tarpaulin.)
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