{"id":9947,"date":"2026-06-08T08:40:13","date_gmt":"2026-06-08T08:40:13","guid":{"rendered":"https:\/\/longchangchemical.com\/white-uv-coatings-photoinitiator\/"},"modified":"2026-06-09T03:41:21","modified_gmt":"2026-06-09T03:41:21","slug":"white-uv-coatings-photoinitiator","status":"publish","type":"post","link":"https:\/\/longchangchemical.com\/zh\/white-uv-coatings-photoinitiator\/","title":{"rendered":"\u7528\u4e8e\u767d\u8272\u7d2b\u5916\u5149\u56fa\u5316\u6d82\u6599\u7684\u5149\u5f15\u53d1\u5242\uff1a\u5173\u4e8e\u4e8c\u6c27\u5316\u949b\u3001\u56fa\u5316\u6df1\u5ea6\u548c\u9ec4\u53d8\u7684\u9009\u62e9"},"content":{"rendered":"<p><strong>\u5feb\u901f\u56de\u7b54\uff1a<\/strong> \u5728\u767d\u8272\u7d2b\u5916\u7ebf\u6d82\u6599\u4e2d\uff0c\u4e70\u5bb6\u5728\u6bd4\u8f83\u4ea7\u54c1\u540d\u79f0\u4e4b\u524d\uff0c\u5e94\u9996\u5148\u8003\u8651\u989c\u6599\u8d1f\u8f7d\u91cf\u548c\u771f\u5b9e\u7684\u5149\u6e90\u3002 <a href=\"https:\/\/longchangchemical.com\/zh\/product\/photoinitiator-819-dw\/\">\u5149\u5f15\u53d1\u5242 819 DW<\/a> \u5f53\u7cfb\u7edf\u662f\u6c34\u6027\u4f53\u7cfb\uff0c\u6216\u8005\u57fa\u4e8e\u9700\u8981\u66f4\u5bb9\u6613\u5206\u6563\u548c\u66f4\u5f3a\u56fa\u5316\u652f\u6491\u7684\u767d\u8272\u548c\u9ad8\u906e\u76d6\u529b\u989c\u6599\u6784\u5efa\u65f6\uff0c\u7b2c\u4e00\u4e2a\u5173\u952e\u8003\u91cf\u70b9\u662f\u6700\u5f3a\u7684\u3002 <a href=\"https:\/\/longchangchemical.com\/zh\/product\/photoinitiator-819-irgacure-819-cas-162881-26-7\/\">\u5149\u5f15\u53d1\u5242 819<\/a> \u5f53\u6d82\u5c42\u66f4\u539a\u3001\u66f4\u5177\u8272\u7d20\u6c89\u7740\u6027\uff0c\u6216\u5728\u66f4\u5e7f\u6cdb\u7684 UV \u6216 UV LED \u8def\u7ebf\u4e2d\u627f\u53d7\u66f4\u6df1\u7684\u56fa\u5316\u538b\u529b\u65f6\uff0c\u5e94\u53ca\u65e9\u5f15\u8d77\u5173\u6ce8\u3002 <a href=\"https:\/\/longchangchemical.com\/zh\/product\/photoinitiator-detx-cas-82799-44-8\/\">\u5149\u5f15\u53d1\u5242 DETX<\/a> \u5f53\u5de5\u827a\u4e0e\u957f\u6ce2II\u7c7b\u8def\u7ebf\u66f4\u5339\u914d\uff0c\u5e76\u4e14\u8be5\u914d\u65b9\u53ef\u4ee5\u652f\u6301\u5171\u5f15\u53d1\u5242\u8bbe\u8ba1\u65f6\uff0c\u4f1a\u5411\u4e0a\u79fb\u52a8\u3002<\/p>\n<p>\u8fd9\u662f\u5b9e\u9645\u7684\u8d2d\u4e70\u7ec6\u5206\u3002\u767d\u8272\u7d2b\u5916\u7ebf\u6d82\u6599\u4e0d\u9002\u5408\u901a\u7528\u7684\u5149\u5f15\u53d1\u5242\u5217\u8868\uff0c\u56e0\u4e3a\u4e8c\u6c27\u5316\u949b\u548c\u5176\u4ed6\u9ad8\u906e\u76d6\u529b\u989c\u6599\u4f1a\u5feb\u901f\u6539\u53d8\u7cbe\u9009\u5217\u8868\u3002<\/p>\n<h2>\u4e3a\u4ec0\u4e48\u767d\u8272\u7d2b\u5916\u7ebf\u6d82\u6599\u9700\u8981\u4e0d\u540c\u7684\u5019\u9009\u540d\u5355<\/h2>\n<p>\u767d\u8272\u7d2b\u5916\u5149\u56fa\u5316\u6d82\u6599\u901a\u5e38\u6bd4\u6e05\u6f06\u4f53\u7cfb\u66f4\u96be\u56fa\u5316\uff0c\u56e0\u4e3a\u4e00\u65e6\u914d\u65b9\u5177\u6709\u66f4\u5f3a\u7684\u906e\u76d6\u529b\uff0c\u5149\u7ebf\u7a7f\u900f\u5c31\u4f1a\u4e0b\u964d\u3002\u5728\u5b9e\u8df5\u4e2d\uff0c\u4e70\u5bb6\u901a\u5e38\u4f1a\u5c06\u9009\u62e9\u8303\u56f4\u7f29\u5c0f\u5230\u56db\u4e2a\u5b9e\u9645\u9650\u5236\uff1a<\/p>\n<ul>\n<li><strong>\u8272\u7d20\u8d1f\u8377<\/strong> \u767d\u8272\u548c\u5176\u4ed6\u9ad8\u4e0d\u900f\u660e\u5ea6\u7cfb\u7edf\u4f1a\u51cf\u5c11\u5230\u8fbe\u80f6\u7247\u66f4\u6df1\u5904\u7684\u5149\u7ebf\u3002<\/li>\n<li><strong>\u56fa\u5316\u538b\u529b\uff1a<\/strong> \u539a\u767d\u7684\u6d82\u5c42\u548c\u6709\u8272\u5c42\u9700\u8981\u6bd4\u5feb\u901f\u8868\u9762\u56fa\u5316\u66f4\u957f\u7684\u56fa\u5316\u65f6\u95f4\u3002<\/li>\n<li><strong>\u9ec4\u5316\u63a7\u5236<\/strong> \u56fa\u5316\u540e\u6d82\u5c42\u4ecd\u9700\u5177\u6709\u53ef\u63a5\u53d7\u7684\u5916\u89c2\u3002<\/li>\n<li><strong>\u706f\u5177\u914d\u4ef6<\/strong> \u7eb8\u9762\u4e0a\u7684\u5f3a\u5927\u4ea7\u54c1\uff0c\u5982\u679c\u6ce2\u957f\u5339\u914d\u5ea6\u5dee\uff0c\u4ecd\u7136\u53ef\u80fd\u662f\u7b2c\u4e00\u4e2a\u7cdf\u7cd5\u7684\u6837\u54c1\u3002<\/li>\n<\/ul>\n<p>\u5982\u679c\u60a8\u5148\u9700\u8981\u66f4\u5e7f\u6cdb\u7684\u5bb6\u65cf\u89c6\u89d2\uff0c\u8bf7\u4ece\u9686\u660c\u7684\u5f00\u59cb\u3002 <a href=\"https:\/\/longchangchemical.com\/zh\/photoinitiator-selection-guide\/\">\u5149\u5f15\u53d1\u5242\u9009\u62e9\u6307\u5357<\/a>.<\/p>\n<h2>\u5feb\u901f\u7b5b\u9009\uff1a819 DW \u5bf9\u6bd4 819 \u5bf9\u6bd4 DETX \u7528\u4e8e\u767d\u8272 UV \u6d82\u6599<\/h2>\n<table>\n<thead>\n<tr>\n<th>\u4ea7\u54c1<\/th>\n<th>\u6700\u4f73\u9996\u6b21\u9002\u5e94<\/th>\n<th>\u4e3a\u4ec0\u4e48\u4e70\u5bb6\u4f1a\u5c06\u5176\u5217\u5165\u5019\u9009\u540d\u5355<\/th>\n<th>\u5f53\u5b83\u4e0d\u662f\u7b2c\u4e00\u9009\u62e9\u65f6<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><a href=\"https:\/\/longchangchemical.com\/zh\/product\/photoinitiator-819-dw\/\">\u5149\u5f15\u53d1\u5242 819 DW<\/a><\/td>\n<td>\u6c34\u6027\u767d\u8272\u6216\u9ad8\u906e\u76d6\u529b\u6d82\u6599<\/td>\n<td>\u9686\u660c\u5c06\u5176\u5b9a\u4f4d\u4e3a 819 \u7684\u7a33\u5b9a\u6c34\u5206\u6563\u4f53\uff0c\u6613\u4e8e\u6df7\u5408\u5230\u6c34\u6027\u4f53\u7cfb\u4e2d\uff0c\u53ef\u76f4\u63a5\u7528\u4e8e\u542b\u6709\u4e8c\u6c27\u5316\u949b\u6216\u7c7b\u4f3c\u906e\u76d6\u989c\u6599\u7684\u767d\u8272\u6d82\u6599\u3001\u5f69\u8272\u6d82\u6599\u548c\u6cb9\u58a8\u3002<\/td>\n<td>\u5f53\u9879\u76ee\u4e0d\u662f\u6c34\u6027\u7684\uff0c\u5e76\u4e14\u4e0d\u9700\u8981\u5206\u6563\u4f53\u5904\u7406\u4f18\u52bf\u65f6<\/td>\n<\/tr>\n<tr>\n<td><a href=\"https:\/\/longchangchemical.com\/zh\/product\/photoinitiator-819-irgacure-819-cas-162881-26-7\/\">\u5149\u5f15\u53d1\u5242 819<\/a><\/td>\n<td>\u8f83\u539a\u3001\u767d\u8272\u3001\u6709\u8272\u6216\u8f83\u96be\u56fa\u5316\u7684\u7d2b\u5916\u5149\u56fa\u5316\u6d82\u6599<\/td>\n<td>\u5bbd\u6ce2\u957f370\u81f3450\u7eb3\u7c73\u5b9a\u4f4d\uff0c\u6df1\u5c42\u56fa\u5316\u652f\u6301\uff0c\u9002\u7528\u4e8e\u767d\u8272\u6216\u6d45\u8272\u7cfb\u7edf\u7684\u4f4e\u9ec4\u53d8\u6846\u67b6\uff0c\u4ee5\u53ca\u5f53\u524d\u957f\u660c\u9875\u9762\u4e0a\u7684UV-LED\u76f8\u5173\u6027<\/td>\n<td>\u5f53\u4e3b\u8981\u6311\u6218\u662f\u6c34\u6027\u5206\u6563\u6cd5\u6216\u6709\u610f\u56f4\u7ed5II\u7c7b\u5171\u5f15\u53d1\u5242\u5305\u88c5\u6784\u5efa\u7684\u914d\u65b9\u65f6<\/td>\n<\/tr>\n<tr>\n<td><a href=\"https:\/\/longchangchemical.com\/zh\/product\/photoinitiator-detx-cas-82799-44-8\/\">\u5149\u5f15\u53d1\u5242 DETX<\/a><\/td>\n<td>\u957f\u6ce2\u6216\u504f\u53ef\u89c1\u5149\u767d\u8272\u6d82\u5c42\u4f53\u7cfb\uff0c\u5e26\u52a9\u5f15\u53d1\u5242\u652f\u6301<\/td>\n<td>\u9f99\u660c\u76ee\u524d\u7684\u9875\u9762\u5b9a\u4f4d\u662fDETX\u5728\u767d\u8272\u6d82\u6599\u3001\u539a\u819c\u3001\u51cf\u5c11\u9ec4\u53d8\uff0c\u5e76\u5bf9385 nm\u7684\u54cd\u5e94\uff0c\u4ee5\u53ca405 nm\u548c420 nm LED\u7684\u76f8\u5173\u6027\u3002<\/td>\n<td>\u5f53\u914d\u65b9\u65e0\u6cd5\u652f\u6301 II \u7c7b\u8def\u7ebf\u6240\u9700\u7684\u5171\u5f15\u53d1\u5242\u903b\u8f91\u65f6<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\u5f53\u5149\u5f15\u53d1\u5242819 DW\u66f4\u9002\u5408\u65f6<\/h2>\n<p>\u5f53\u767d\u8272\u7d2b\u5916\u7ebf\u56fa\u5316\u6d82\u5c42\u9879\u76ee\u4e0d\u4ec5\u4ec5\u662f\u5e26\u989c\u6599\u7684\uff0c\u800c\u4e14\u662f\u6c34\u6027\u6216\u5bf9\u5904\u7406\u654f\u611f\u7684\u65f6\uff0c819 DW \u5e94\u79fb\u81f3\u524d\u9762\u3002<\/p>\n<ul>\n<li><strong>\u6c34\u6027\u8def\u7ebf\u5df2\u83b7\u652f\u6301\uff1a<\/strong> \u9686\u660c\u5c06819 DW\u63cf\u8ff0\u4e3a819\u5728\u6c34\u4e2d\u7684\u5206\u6563\u4f53\uff0c\u6613\u4e8e\u6df7\u5165\u6c34\u6027\u4f53\u7cfb\uff0c\u5f62\u6210\u7a33\u5b9a\u7684\u5206\u6563\u4f53\u3002<\/li>\n<li><strong>\u767d\u6f06\u7684\u76f8\u5173\u6027\u662f\u660e\u786e\u7684\uff1a<\/strong> \u5f53\u524d\u9875\u9762\u76f4\u63a5\u5b9a\u4f4d\u4e86\u542b\u6709\u4e8c\u6c27\u5316\u949b\u6216\u5176\u4ed6\u9ad8\u906e\u76d6\u529b\u989c\u6599\u7684\u767d\u8272\u6d82\u6599\u3001\u6709\u8272\u6d82\u6599\u548c\u6cb9\u58a8\u3002<\/li>\n<li><strong>\u8d2f\u7a7f\u56fa\u5316\u652f\u6491<\/strong> \u540c\u4e00\u9875\u9762\u8fd8\u6307\u51fa\uff0c819 DW \u5177\u6709\u51fa\u8272\u7684\u5438\u6536\u6027\u80fd\uff0c\u53ef\u7528\u4e8e\u539a\u819c\u7cfb\u7edf\u3002<\/li>\n<li><strong>\u8fd9\u91cc\u7684\u9ec4\u5316\u63a7\u5236\u4e5f\u5f88\u91cd\u8981\uff1a<\/strong> Longchang\u8fd8\u8ba4\u4e3a819 DW\u6709\u52a9\u4e8e\u8fd9\u4e9b\u6709\u8272\u4f53\u7cfb\u7684\u6297\u7d2b\u5916\u7ebf\u9ec4\u53d8\u3002<\/li>\n<\/ul>\n<p>\u5982\u679c\u4e70\u5bb6\u6b63\u5728\u5904\u7406\u767d\u8272\u6c34\u6027\u6d82\u6599\uff0c\u5e76\u5e0c\u671b\u4ea7\u54c1\u8def\u7ebf\u5df2\u9488\u5bf9\u989c\u6599\u8d1f\u8f7d\u548c\u66f4\u6613\u4e8e\u63ba\u5165\u8fdb\u884c\u4e86\u5b9a\u4f4d\uff0c\u5219 819 DW \u901a\u5e38\u662f\u7b2c\u4e00\u4e2a\u6700\u5f3a\u7684\u5ba1\u67e5\u70b9\u3002<\/p>\n<h2>\u5f53\u5149\u5f15\u53d1\u5242 819 \u66f4\u9002\u5408\u65f6<\/h2>\n<p>\u5f53\u767d\u8272\u6d82\u5c42\u5728\u66f4\u5f3a\u7684\u6df1\u5c42\u56fa\u5316\u538b\u529b\u4e0b\u65f6\uff0c\u6216\u8005\u5f53\u9879\u76ee\u4e3b\u8981\u4e0d\u662f\u5206\u6563\u4f53\u5904\u7406\u95ee\u9898\u65f6\uff0c819 \u5e94\u8be5\u5f97\u5230\u66f4\u65e9\u7684\u5173\u6ce8\u3002<\/p>\n<ul>\n<li><strong>Deeper-cure \u7684\u652f\u6301\u5df2\u5f97\u5230\u652f\u6301\uff1a<\/strong> \u9686\u660c\u76ee\u524d\u7684 819 \u9875\u5f3a\u8c03\u4e86\u6df1\u5c42\u56fa\u5316\u548c\u6709\u52a9\u4e8e\u5149\u7a7f\u900f\u7684\u6f02\u767d\u6548\u679c\u3002<\/li>\n<li><strong>\u767d\u8272\u548c\u6d45\u8272\u7cfb\u7edf\u5df2\u7ecf\u652f\u6301\uff1a<\/strong> \u540c\u4e00\u9875\u63cf\u8ff0\u4e86\u6700\u5c0f\u5316\u53d1\u9ec4\u4ee5\u53ca\u9002\u7528\u4e8e\u767d\u8272\u6216\u6d45\u8272\u7cfb\u7edf\u7684\u7279\u70b9\u3002<\/li>\n<li><strong>\u5df2\u652f\u6301\u8272\u7d20\u7cfb\u7edf\uff1a<\/strong> \u9686\u660c\u5b9a\u4f4d 819 \u7528\u4e8e\u539a\u6d82\u5c42\u548c\u7740\u8272\u4f53\u7cfb\uff0c\u8fd9\u4f7f\u5f97\u5b83\u5728\u767d\u8272\u4e0d\u900f\u660e\u5ea6\u5f00\u59cb\u963b\u788d\u56fa\u5316\u65f6\u5177\u6709\u5546\u4e1a\u4ef7\u503c\u3002<\/li>\n<li><strong>\u66f4\u5e7f\u6cdb\u7684\u7d2b\u5916\u7ebf\u548c\u7d2b\u5916\u7ebfLED\u76f8\u5173\u6027<\/strong> \u5f53\u524d\u9875\u9762\u5728 370 \u81f3 450 \u7eb3\u7c73\u7684\u5bbd\u5438\u6536\u8303\u56f4\u548c\u7d2b\u5916 LED \u5149\u6e90\u65b9\u9762\u4e5f\u6392\u540d\u7b2c 819 \u4f4d\u3002<\/li>\n<\/ul>\n<p>\u5982\u679c\u767d\u8272\u6d82\u6599\u56e2\u961f\u9700\u8981\u66f4\u5f3a\u7684\u6df1\u5c42\u56fa\u5316\u8def\u7ebf\uff0c\u7528\u4e8e\u66f4\u539a\u7684\u819c\u3001\u66f4\u5f3a\u7684\u6e17\u900f\u6027\u6216\u7d2b\u5916\u7ebf LED \u7b5b\u5206\uff0c\u90a3\u4e48 819 \u901a\u5e38\u6bd4\u5e38\u89c4\u7684\u900f\u660e\u4f53\u7cfb\u57fa\u51c6\u66f4\u503c\u5f97\u4f18\u5148\u8fdb\u884c\u6837\u54c1\u6d4b\u8bd5\u3002<\/p>\n<h2>\u5728\u4ec0\u4e48\u60c5\u51b5\u4e0b DETX \u5149\u5f15\u53d1\u5242\u662f\u66f4\u597d\u7684\u9009\u62e9<\/h2>\n<p>DETX \u5e94\u4e0e 819 \u6216 819 DW \u5904\u4e8e\u4e0d\u540c\u7684\u9009\u62e9\u8def\u5f84\uff0c\u56e0\u4e3a\u5176\u673a\u5236\u6709\u6240\u6539\u53d8\u3002\u5f53\u5de5\u827a\u80fd\u591f\u4f7f\u7528 II \u7c7b\u8def\u7ebf\u5e76\u4e14\u957f\u6ce2\u54cd\u5e94\u5728\u5546\u4e1a\u4e0a\u5f88\u91cd\u8981\u65f6\uff0c\u5b83\u7684\u76f8\u5173\u6027\u5c31\u66f4\u5f3a\u3002<\/p>\n<ul>\n<li><strong>\u673a\u5236\u6e05\u6670\u5ea6\u5df2\u5f97\u5230\u652f\u6301\uff1a<\/strong> \u957f\u957f\uff08Longchang\uff09\u6307\u51fa\uff0cDETX \u662f\u4e00\u79cdII\u7c7b\u6c22\u539f\u5b50\u8f6c\u79fb\u5149\u5f15\u53d1\u5242\uff0c\u9700\u8981\u53d4\u80fa\u7b49\u5171\u5f15\u53d1\u5242\u3002<\/li>\n<li><strong>\u957f\u6ce2\u54cd\u5e94\u5f88\u91cd\u8981\uff1a<\/strong> the current page places DETX around 385 nm and notes response to 405 nm and 420 nm LEDs.<\/li>\n<li><strong>White-coating fit is already supported:<\/strong> Longchang explicitly positions DETX as stronger in colored systems, especially white coatings, and in thicker films.<\/li>\n<li><strong>Reduced-yellowing framing:<\/strong> the same page also ties DETX to lower-yellowing white-coating selection logic.<\/li>\n<\/ul>\n<p>If the buyer is screening a white UV coating route that benefits from longer-wave response and a co-initiated package, DETX is often the more relevant first comparison than a type I-only shortcut.<\/p>\n<h2>\u4e70\u5bb6\u5e94\u5982\u4f55\u5728\u7533\u8bf7\u6837\u54c1\u524d\u8fdb\u884c\u7b5b\u9009<\/h2>\n<h3>1. Start with the lamp and wavelength window<\/h3>\n<p>Changhong&#8217;s own coating-selection guidance emphasizes that the photoinitiator absorption band should match the emission band of the light source. In practical terms, that means white coating selection should start with the real lamp, not with the most familiar catalog name.<\/p>\n<h3>2. Judge whether the real bottleneck is water-based handling or cure-through<\/h3>\n<p>If the main issue is a water-based high-hiding-power system, 819 DW deserves earlier attention. If the main issue is deeper cure in a thicker white film, 819 often becomes more important.<\/p>\n<h3>3. Decide whether the formula can support a class II route<\/h3>\n<p>DETX should not be shortlisted as if it behaves like a type I product. If the formulation cannot support co-initiator design, remove it early.<\/p>\n<h3>4. Keep yellowing visible in the decision<\/h3>\n<p>White coatings can look cured and still fail commercially if the appearance target moves in the wrong direction after cure.<\/p>\n<h3>5. \u4fdd\u6301\u7b2c\u4e00\u8f6e\u6837\u54c1\u7d27\u5bc6\u8d34\u5408<\/h3>\n<p>In white systems, a cleaner first answer usually comes from comparing only the 2 to 3 most relevant routes, not from testing a long mixed list.<\/p>\n<p>For the broader coating workflow, also see <a href=\"https:\/\/longchangchemical.com\/zh\/selection-of-photoinitiators-in-uv-coating-formulations\/\">UV\u6d82\u6599\u914d\u65b9\u4e2d\u5149\u5f15\u53d1\u5242\u7684\u9009\u62e9<\/a>. If the buyer is still deciding between reaction paths first, the live comparison of <a href=\"https:\/\/longchangchemical.com\/zh\/comparison-of-uv-free-radical-and-cationic-curing\/\">\u81ea\u7531\u57fa\u548c\u9633\u79bb\u5b50\u5149\u5f15\u53d1\u5242\u8def\u7ebf<\/a> \u662f\u66f4\u597d\u7684\u8d77\u70b9\u3002<\/p>\n<h2>\u63a8\u8350\u7684\u9686\u660c\u4ea7\u54c1\u8def\u7ebf<\/h2>\n<ul>\n<li><strong>Water-based white and high-hiding-power route:<\/strong> <a href=\"https:\/\/longchangchemical.com\/zh\/product\/photoinitiator-819-dw\/\">\u5149\u5f15\u53d1\u5242 819 DW<\/a><\/li>\n<li><strong>Deeper-cure white pigmented route:<\/strong> <a href=\"https:\/\/longchangchemical.com\/zh\/product\/photoinitiator-819-irgacure-819-cas-162881-26-7\/\">\u5149\u5f15\u53d1\u5242 819<\/a><\/li>\n<li><strong>Long-wave co-initiated white-coating route:<\/strong> <a href=\"https:\/\/longchangchemical.com\/zh\/product\/photoinitiator-detx-cas-82799-44-8\/\">\u5149\u5f15\u53d1\u5242 DETX<\/a><\/li>\n<li><strong>Optional type I long-wave reference:<\/strong> <a href=\"https:\/\/longchangchemical.com\/zh\/lcnacure-tpo-cas-75980-60-8\/\">\u5149\u5f15\u53d1\u5242 TPO<\/a><\/li>\n<li><strong>Broader coating guide:<\/strong> <a href=\"https:\/\/longchangchemical.com\/zh\/selection-of-photoinitiators-in-uv-coating-formulations\/\">UV\u6d82\u6599\u914d\u65b9\u4e2d\u5149\u5f15\u53d1\u5242\u7684\u9009\u62e9<\/a><\/li>\n<li><strong>\u66f4\u5168\u9762\u7684\u5bb6\u5ead\u6307\u5357\uff1a<\/strong> <a href=\"https:\/\/longchangchemical.com\/zh\/photoinitiator-selection-guide\/\">\u5982\u4f55\u9009\u62e9\u5149\u5f15\u53d1\u5242\u7528\u4e8eUV\u56fa\u5316<\/a><\/li>\n<\/ul>\n<h2>\u5e38\u89c1\u95ee\u9898<\/h2>\n<h3>Which photoinitiator is best for white UV coatings?<\/h3>\n<p>There is no single best answer. In Longchang&#8217;s current product set, 819 DW is the strongest first review point for water-based white and high-hiding-power systems, 819 is stronger for deeper-cure white pigmented coatings, and DETX becomes more relevant when the formula is designed for a co-initiated longer-wave route.<\/p>\n<h3>Why are white UV coatings harder than clear systems?<\/h3>\n<p>Because titanium dioxide and other hiding pigments reduce light penetration, which makes cure-through harder and changes which photoinitiator route deserves first review.<\/p>\n<h3>When should I start with 819 DW instead of 819?<\/h3>\n<p>Start with 819 DW when the coating is water-based and the formulation team wants a stable dispersion route already positioned for white and high-hiding-power systems. Start with 819 earlier when the deeper-cure demand is the bigger bottleneck.<\/p>\n<h3>When should I move to DETX?<\/h3>\n<p>Move to DETX when the line benefits from longer-wave response and the formulation can support the co-initiator logic required by a class II photoinitiator.<\/p>\n<h2>Need a tighter shortlist for white UV coatings?<\/h2>\n<p>If your white UV coating project is being limited by titanium-dioxide burden, deeper-cure pressure, yellowing, or lamp fit, define that bottleneck first and then compare only the most relevant Longchang product paths. That usually gives a faster and cleaner sampling decision than treating white coatings like a standard clear-system screen.<\/p>","protected":false},"excerpt":{"rendered":"<p>Learn how to choose a photoinitiator for white UV coatings by comparing titanium-dioxide burden, through-cure pressure, yellowing control, and practical Longchang product paths including 819 DW, 819, and DETX.<\/p>","protected":false},"author":6,"featured_media":9979,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[114],"tags":[],"class_list":["post-9947","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-catalysts-chemical-auxiliary-agents"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.3.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Photoinitiator for White UV Coatings: How to Choose for Titanium Dioxide, Through-Cure, and Yellowing - Longchang Chemical<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/longchangchemical.com\/zh\/white-uv-coatings-photoinitiator\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Photoinitiator for White UV Coatings: How to Choose for Titanium Dioxide, Through-Cure, and Yellowing - 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