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低溫固化粉末涂料和熱塑性粉末涂料的差異?-行業動態-耐高溫粉末涂料廠家,低溫固化粉末涂料,江蘇塑料粉末(價格|批發),上海騎帆粉末,常州市源長新材料科技有限公司

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低溫固化粉末涂料和熱塑性粉末涂料的差異?

文章出處:本站 瀏覽次數:650發表時間:2022-06-28

低溫固化粉末涂料和熱塑性粉末涂料的差異?

熱固性是指加熱能固化交聯的,交聯后的涂層不熔不溶,加熱過程當中有化學反應。熱塑性是指加熱后粉末能軟化,但不會交聯,加熱過程當中惟有物理變更無化學反應。詳細機能差異以下。

熱塑性粉末涂料。熱塑性粉末涂料是出現的,它在噴涂溫度下溶融,冷卻時凝集成膜。由于加工和噴涂技巧簡單,粉末涂料只需加熱融化、流平、冷卻或萃取凝集成膜即可,不需求復雜的固化裝置。大多應用的質料都是市場上多見的聚合物,無數前提下都可滿足應用機能的要求。但也存在某些不及,諸如熔融溫度高,著色程度低,與金屬表面粘著性差等。只管云云,常用的熱塑性粉末涂料仍表現出少許特有的機能,其中聚烯烴粉末涂料具有極好的耐溶劑性;聚偏氟乙烯涂料具有凸起的耐候性;聚酰胺具有優異的耐磨性;聚氯乙烯具有較好的費用/機能比;熱塑性聚酯粉末涂料具有外觀漂亮、藝術性高等好處。這些特征使熱塑性粉末涂料在涂料市場中占據非常大比例。

低溫固化粉末涂料

低溫固化粉末涂料是指以熱固性樹脂作為成膜物資,進入起交聯反應的固化劑經加熱后能形成不溶不熔的質地堅硬涂層。溫度再高該涂層也不會像熱塑性涂層那樣軟化,而只能發生剖釋。由于低溫固化粉末涂料所接納的樹脂為聚合度較低的預聚物,分子量較低,因此涂層的流平性較好,具有較好的裝飾性,并且低分子量的預聚物經固化后,能形成網狀交聯的大分子,于是涂層具有較好防腐性和機器機能。故低溫固化粉末涂料開展尤其迅速。


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