{"id":377,"date":"2009-02-24T09:12:14","date_gmt":"2009-02-24T01:12:14","guid":{"rendered":"http:\/\/www.g4e.cn\/wordpress\/?p=377"},"modified":"2013-11-18T15:25:03","modified_gmt":"2013-11-18T07:25:03","slug":"prevention-void-for-underfill","status":"publish","type":"post","link":"http:\/\/www.g4e.cn\/wordpress\/adhesiveknowledge\/377.html","title":{"rendered":"prevention void for underfill"},"content":{"rendered":"<p>\u8fd9\u53c8\u662f\u4e00\u4efdnamics\u516c\u53f8\u64b0\u5199\u7684\u5173\u4e8e\u5e95\u90e8\u586b\u5145\u8fc7\u7a0b\u4e2d\u7a7a\u6d1e\uff08\u6c14\u6ce1\uff09\u4ea7\u751f\u7684\u539f\u56e0\u53ca\u907f\u514d\u7684\u65b9\u6cd5\u7684\uff0c\u5176\u4e2d\u662f\u4ee5\u5176U8439-1\u578b\u53f7\u4e3a\u4f8b\u8fdb\u884c\u5206\u6790\u7684\u3002\u5173\u4e8e\u7a7a\u6d1e(\u6c14\u6ce1)\u4ea7\u751f\u7684\u539f\u56e0\u53ef\u4ee5\u603b\u7ed3\u4e3a\u4e24\u5927\u7c7b\uff0c\u4e00\u7c7b\u662f\u53ebCapture void\uff0c\u4e00\u7c7b\u662f\u53ebVolatile void\u3002\u7528\u4e2d\u6587\u7406\u89e3\u5c31\u662f\u4e00\u7c7b\u662f\u6355\u83b7\u7a7a\u6d1e\uff08\u6c14\u6ce1\uff09\uff1f\u4e00\u7c7b\u662f\u6325\u53d1\u4ea7\u751f\u7684\u7a7a\u6d1e\uff08\u6c14\u6ce1\uff09\u3002\u524d\u9762\u8fd9\u4e2aCapture void\u8868\u8fbe\u53ef\u80fd\u4e0d\u591f\u786e\u5207\uff0c\u4f46\u4e00\u65f6\u4e5f\u60f3\u4e0d\u8d77\u66f4\u597d\u7684\u8868\u8fbe\u65b9\u6cd5\u3002<br \/>\n\u5173\u4e8eCapture void\u7684\u4ea7\u751f\u4e3b\u8981\u662f\u56e0\u4e3a\u70b9\u80f6Filleting speed\u901f\u5ea6\u5927\u4e8e\u5176\u5728\u82af\u7247\u5e95\u90e8\u7684\u586b\u5145\u901f\u5ea6penetration speed\uff0c\u5bfc\u81f4\u7a7a\u6c14\u65e0\u6cd5\u6392\u51fa\uff0c\u7ed3\u679c\u5bfc\u81f4\u7a7a\u6d1e\u7684\u5f62\u6210\uff0c\u5982\u56fe\u6240\u793a\uff1a<br \/>\n<a href=\"http:\/\/www.g4e.cn\/wordpress\/wp-content\/uploads\/2009\/02\/capture-void.jpg\"><img loading=\"lazy\" class=\"aligncenter size-full wp-image-375\" title=\"capture-void\" src=\"http:\/\/www.g4e.cn\/wordpress\/wp-content\/uploads\/2009\/02\/capture-void.jpg\" alt=\"capture-void\" width=\"579\" height=\"84\" srcset=\"http:\/\/www.g4e.cn\/wordpress\/wp-content\/uploads\/2009\/02\/capture-void.jpg 579w, http:\/\/www.g4e.cn\/wordpress\/wp-content\/uploads\/2009\/02\/capture-void-300x43.jpg 300w\" sizes=\"(max-width: 579px) 100vw, 579px\" \/><\/a><br \/>\n\u89e3\u51b3\u7684\u65b9\u6cd5\u5c31\u662f\u8ba9The Filleting speed = The penetration speed\uff0c\u91c7\u53d6\u7684\u63aa\u65bd\u5c31\u662f\uff1a<!--more--><br \/>\n1. Shorter dispensing length\uff08\u51cf\u5c0f\u70b9\u80f6\u957f\u5ea6\uff0c\u7565\u5c0f\u4e8e\u82af\u7247\u8fb9\u957f\uff09<br \/>\n2. Smaller dispensing volume\uff08\u8f83\u5c11\u6bcf\u6b21\u7684\u70b9\u80f6\u91cf\uff09<br \/>\n3. Enough interval between A and B\uff08\u7559\u6709\u8db3\u591f\u7684\u95f4\u9694\u65f6\u95f4\u8ba9\u80f6\u6c34\u4ece\u4e00\u8fb9\u6d41\u5230\u53e6\u4e00\u8fb9\uff09<br \/>\n4. Higher temperature at dispensing.\uff08\u70b9\u80f6\u65f6\u8fdb\u884c\u9884\u70ed\uff0c\u5177\u4f53\u9884\u70ed\u6e29\u5ea6\u9700\u6839\u636e\u60c5\u51b5\u8c03\u8bd5\uff09<br \/>\nPlease evaluate between 70 \u2013 110 degrees C, and choose the optimum temperature.<br \/>\n\u5176\u5b9e\u8fd9\u4e2a\u548c\u6211\u5f53\u5e74\u5728\u97e9\u56fd\u5143\u5316\u5b66won chemical\u516c\u53f8\u542c\u5230\u7684\u7406\u8bba\u662f\u7c7b\u4f3c\u7684\uff0c\u5c24\u5176\u662f\u7b2c\u4e00\u70b9\u548c\u7b2c\u56db\u70b9\uff0c\u53ef\u60dc\u4e2d\u56fd\u7684\u5382\u5bb6\u5f80\u5f80\u60f3\u7701\u7565\u7b2c\u56db\u70b9\uff0c\u56e0\u4e3a\u6b64\u6b65\u589e\u52a0\u4e86\u9884\u70ed\u8bbe\u5907\u548c\u5de5\u827a\u3002<br \/>\n\u8fd8\u6709\u4e00\u4e2aVolatile void\u662f\u4e0e\u591a\u4e2a\u56e0\u7d20\u76f8\u5173\u7684\uff0c\u5176\u4e2d\u5305\u62ec\u4ee5\u4e0b\u51e0\u4e2a\u65b9\u9762\uff0c\u800c\u4e14\u5f71\u54cd\u7684\u7a0b\u5ea6\u4e5f\u662f\u968f\u6761\u4ef6\u53d8\u5316\u800c\u53d8\u5316\u7684\uff1a<br \/>\n1. Leaving time I\uff1aBetween \u201cPre-bake substrate\u201d and \u201cDispensing UF\u201d.<br \/>\n2. The surface of substrate\uff1aRoughness of the substrate surface.<br \/>\n3. Preheat conditions\uff1aPre-heat substrate : Temperature and Time<br \/>\n4. Leaving time II\uff1aBetween \u201cDispensing UF\u201d and \u201c Curing\u201d.<br \/>\n\u51e0\u4e2a\u57fa\u672c\u7ed3\u8bba\u662f\uff1a<br \/>\n1. Influence of the leaving time I<br \/>\nWhen the leaving time I becomes long,it is easy to generate voids.<br \/>\n2. Influence of the substrate roughness<br \/>\nWhen the substrate surface is smooth,it is hard to generate a void.<br \/>\n3. Influence of the preheat condition<br \/>\nPreheat (for over 2 minuets at 120, 150 oC) prevented making void.<br \/>\nPreheat is an effective method as the method of preventing making void.<br \/>\n4. Influence of the leaving time<br \/>\nLeaving time after dispensing making voids.<br \/>\n\u5177\u4f53\u7684\u5bf9\u5e94\u5173\u7cfb\u5927\u5bb6\u53ef\u4ee5\u4e0b\u8f7d\u9644\u4ef6\u67e5\u770b\u76f8\u5173\u5185\u5bb9\uff0c\u4e0d\u540c\u7c7b\u578bunderfill\u4ea7\u54c1\u5728\u4ea7\u751f\u7a7a\u6d1e\u8fd9\u4e00\u5757\u7684\u539f\u56e0\u548c\u89e3\u51b3\u65b9\u6848\u4e5f\u4e0d\u5c3d\u76f8\u540c\uff0c\u53ef\u4ee5\u5bf9\u6bd4\u53c2\u7167\u5b66\u4e60\u4e4b\uff01<\/p>\n<p>\u4e0b\u8f7d\u9644\u4ef6\u67e5\u770b\u4e4b\uff1a<\/p>\n<p>\u534e\u4e3a\u7f51\u76d8\u4e0b\u8f7d\uff1a<a href=\"http:\/\/dl.dbank.com\/c0p3dmlg2l\" target=\"_blank\">http:\/\/dl.dbank.com\/c0p3dmlg2l<\/a><\/p>\n<p><img src=\"http:\/\/www.g4e.cn\/wordpress\/wp-content\/plugins\/hacklog-downloadmanager\/images\/ext\/pdf.gif\" alt=\"\" title=\"\" style=\"vertical-align: middle;\" \/>&nbsp;&nbsp;<strong>underfill-prevention-void.pdf<\/strong> (1.9 MB, 25 \u6b21)<br \/><i>\u60a8\u6ca1\u6709\u6743\u9650\u4e0b\u8f7d\u6b64\u6587\u4ef6\u3002<\/i><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u8fd9\u53c8\u662f\u4e00\u4efdnamics\u516c\u53f8\u64b0\u5199\u7684\u5173\u4e8e\u5e95\u90e8\u586b\u5145\u8fc7\u7a0b\u4e2d\u7a7a\u6d1e\uff08\u6c14\u6ce1\uff09\u4ea7\u751f\u7684\u539f\u56e0\u53ca\u907f\u514d\u7684\u65b9\u6cd5\u7684\uff0c\u5176\u4e2d\u662f\u4ee5\u5176U8439- [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[671],"tags":[89,4],"_links":{"self":[{"href":"http:\/\/www.g4e.cn\/wordpress\/wp-json\/wp\/v2\/posts\/377"}],"collection":[{"href":"http:\/\/www.g4e.cn\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.g4e.cn\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.g4e.cn\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.g4e.cn\/wordpress\/wp-json\/wp\/v2\/comments?post=377"}],"version-history":[{"count":0,"href":"http:\/\/www.g4e.cn\/wordpress\/wp-json\/wp\/v2\/posts\/377\/revisions"}],"wp:attachment":[{"href":"http:\/\/www.g4e.cn\/wordpress\/wp-json\/wp\/v2\/media?parent=377"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.g4e.cn\/wordpress\/wp-json\/wp\/v2\/categories?post=377"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.g4e.cn\/wordpress\/wp-json\/wp\/v2\/tags?post=377"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}