{"id":1892,"date":"2011-03-23T22:24:14","date_gmt":"2011-03-23T14:24:14","guid":{"rendered":"http:\/\/www.g4e.cn\/wordpress\/?p=1892"},"modified":"2013-11-19T16:09:05","modified_gmt":"2013-11-19T08:09:05","slug":"hernon-polycure-744-technical-data-sheet","status":"publish","type":"post","link":"http:\/\/www.g4e.cn\/wordpress\/datasheet\/1892.html","title":{"rendered":"Hernon Polycure 744 Technical Data Sheet"},"content":{"rendered":"<p><strong>Product Description<\/strong><\/p>\n<p><strong>Hernon<\/strong> <strong>Polycure 744 <\/strong>is a single component, 100% solid system formulated for use on printed circuit boards. This coating can be cured in seconds by high intensity UV light. Low heat (10 minutes at 250\u00baF) can be used for curing the shaded area. The component may be removed for repair using conventional repair methods of abrasion or localized heat. The repaired part may be recoated off-line using an inexpensive UV light.<\/p>\n<p>&nbsp;<\/p>\n<p><strong>Product Benefits<\/strong><\/p>\n<ul>\n<li>\u2022 Easy to use.<\/li>\n<li>\u2022 Cost effective.<\/li>\n<li>\u2022 Single component, no mixing.<\/li>\n<li>\u2022 100% solid system (no solvents).<\/li>\n<li>\u2022 Short cure cycles.<\/li>\n<li>\u2022 Dual curing mechanism for shaded area.<\/li>\n<\/ul>\n<p><!--more--><\/p>\n<p><strong>Typical Properties (Uncured)<\/strong><\/p>\n<p><strong>Property Value<\/strong><\/p>\n<p>Appearance Amber liquid<\/p>\n<p>Viscosity @ 25\u00baC, cP 80 to 100<\/p>\n<p>Specific gravity 1.10<\/p>\n<p>Flash point See MSDS<\/p>\n<p>&nbsp;<\/p>\n<p><strong>Typical Properties (Cured)<\/strong><\/p>\n<p><strong>Property Value<\/strong><\/p>\n<p>Coefficient of thermal expansion, ASTM D696 (K-1) 0.1<\/p>\n<p>Hardness, Shore D 80<\/p>\n<p>Maximum Gap Fill, in. 0.003<\/p>\n<p>Temperature range, \u00b0F -65 to 300<\/p>\n<p>&nbsp;<\/p>\n<p><strong>Typical Curing Performance<\/strong><\/p>\n<p><strong>Cure Characteristics<\/strong><\/p>\n<p>The following factors can affect cure rates.<\/p>\n<ul>\n<li>\u2022 Dark surfaces lengthen cure time.<\/li>\n<li>\u2022 Full range (UV-A, B, &amp; C) lamps provide faster cures than filtered sources.<\/li>\n<li>\u2022 All UV sources degrade with use. Check output with a radiometer.<\/li>\n<li>\u2022 Thicker films require longer cures.<\/li>\n<li>\u2022 Light intensity decreases as distance from UV source increases.<\/li>\n<li>\u2022 Some clear plastics may contain UV inhibitors.<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p><strong>Fixture Time<\/strong><\/p>\n<p>Fixture time is defined as the time to develop a shear strength of 0.1 N\/mm\u00b2.<\/p>\n<p><strong>Light Intensity Fixture Time, secs.<\/strong><\/p>\n<p>High 5<\/p>\n<p>Low 15<\/p>\n<p>&nbsp;<\/p>\n<p><strong>General Information<\/strong><\/p>\n<p><strong>This product is not recommended for use in pure oxygen and\/or oxygen rich systems and should not be selected as a sealant for chlorine or other strong oxidizing materials.<\/strong><\/p>\n<p><strong>For safe handling information on this product, consult the Material Safety Data Sheet (MSDS).<\/strong><\/p>\n<p>&nbsp;<\/p>\n<p><strong>Ultraviolet Lamp Precautions<\/strong><\/p>\n<ul>\n<li>\u2022 Never look directly at UV source.<\/li>\n<li>\u2022 Wear protective goggles.<\/li>\n<li>\u2022 Do NOT expose bare skin to high intensity UV light wear protective clothing.<\/li>\n<li>\u2022 Use in a well-ventilated area. Some UV sources generated ozone.<\/li>\n<li>\u2022 Provide shielding around high intensity UV sources<\/li>\n<li>\u2022 High intensity UV sources generate heat. Take appropriate precautions.<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p><strong>Storage<\/strong><\/p>\n<p><strong>Polycure 744 <\/strong>should be stored in a cool, dry location in unopened containers at a temperature between 46\u00baF to 82\u00baF (8\u00baC to 28\u00baC) unless otherwise labeled. Optimal storage is at the lower half of this temperature range. To prevent contamination of unused material, do not return any material to its original container.<\/p>\n<p>&nbsp;<\/p>\n<p><strong>Dispensing Equipment<\/strong><\/p>\n<p><strong>Hernon<\/strong> offers a complete line of semi and fully automated dispensing and curing equipment. Contact <strong>Hernon<\/strong> <strong>Sales <\/strong>for additional information.<\/p>\n<p>&nbsp;<\/p>\n<p>\u70b9\u51fb\u4e0b\u8f7d\u6280\u672f\u8d44\u6599\u67e5\u770b\uff1a<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><a href=\"http:\/\/www.g4e.cn\/wordpress\/?dl_id=25\">hernon polycure 744 TDS<\/a><\/strong> (23.3 KB, 116 \u6b21)<\/p><\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Product Description Hernon Polycure 744 is a single com [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":3761,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[667],"tags":[350,276,306,349],"_links":{"self":[{"href":"http:\/\/www.g4e.cn\/wordpress\/wp-json\/wp\/v2\/posts\/1892"}],"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=1892"}],"version-history":[{"count":0,"href":"http:\/\/www.g4e.cn\/wordpress\/wp-json\/wp\/v2\/posts\/1892\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/www.g4e.cn\/wordpress\/wp-json\/wp\/v2\/media\/3761"}],"wp:attachment":[{"href":"http:\/\/www.g4e.cn\/wordpress\/wp-json\/wp\/v2\/media?parent=1892"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.g4e.cn\/wordpress\/wp-json\/wp\/v2\/categories?post=1892"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.g4e.cn\/wordpress\/wp-json\/wp\/v2\/tags?post=1892"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}