{"id":1073,"date":"2013-05-24T09:28:14","date_gmt":"2013-05-24T07:28:14","guid":{"rendered":"https:\/\/tribo2023.se\/?p=1073"},"modified":"2023-06-21T01:42:57","modified_gmt":"2023-06-20T23:42:57","slug":"ul-godkand-kretskortlack","status":"publish","type":"post","link":"https:\/\/old.tribotec.se\/en\/ul-approved-circuit-board-varnish\/","title":{"rendered":"Circuit board paint: UL approved + fast curing + work environment friendly"},"content":{"rendered":"

Many companies require that every material in their products be UL-approved.<\/strong><\/p>\n

What is usually meant by "UL-approved" is that the material must be flame retardant and thus meet the requirements of the standard UL 94, which is prepared by UL (Underwriter Laboratories) in the USA<\/a>. Tribotec can currently offer three different circuit board varnishes that are approved according to UL94 V-0: the two moisture-curing varnishes ECC3010<\/strong> and ECC3050S<\/strong>, as well as heat curing ECC4865<\/strong>.<\/p>\n

The UL94 V-0 standard means<\/strong> that the material should go out within 10 seconds if you first set fire to it with a 1000 degree hot flame. This means that the material in practice does not burn at all. Read more about the test criteria in UL94 here<\/a>.<\/p>\n

The table below is from UL's website, file E135148.<\/p>\n

\"Momentive<\/a><\/p>\n

Both ECC3010 and ECC3050S are very fast curing<\/strong><\/p>\n

The advantage of a moisture-curing varnish is the ease of use: spray or pour the varnish over the components, and let it stand. The varnish hardens with the help of the humidity of the air and does not need extra heat. A 100 micrometer (0.1 mm) coat of ECC3010 cures in just 10 minutes in normal humidity, and is dust-free after just 3 minutes. For the ECC3050S, the corresponding figures are 30 and 5 minutes respectively. If it is not fast enough, you can also heat to 60-70 degrees and get a thorough curing in 2 minutes. With such short curing times, you may not even need to consider UV-curing varnish.<\/p>\n

ECC4865 does not harden until heated<\/strong><\/p>\n

In some situations, you want a long open time at room temperature, for example if you need dip coating and cover the entire circuit board. A moisture-curing varnish is difficult to dip varnish with: it wants to harden with moisture and if you have the varnish in a bucket where you dip, you immediately get a film of silicone rubber on the surface as soon as the varnish in the bucket comes into contact with air. Then it is better to use a thermosetting varnish: ECC4865. It needs to be heated to over 105 degrees, preferably 120, but then it hardens in just a few minutes. The majority of electronic components can handle this without any problems.<\/p>\n

All circuit board varnishes from Tribotec are solvent-free<\/strong><\/p>\n

Despite the fact that our materials have a very low viscosity and a short curing time, they are completely solvent-free. The varnishes are developed in Japan by Momentive Performance Materials<\/a>, formerly GE Toshiba Silicones. The varnishes also have a very faint smell and are not classified as thermosets according to The Swedish Work Environment Agency<\/a> regulation AFS 2005:18<\/a>, the so-called thermoset announcement. They are also free of tin compounds. Therefore, no special extraction or other adaptations of the production premises are needed.<\/p>","protected":false},"excerpt":{"rendered":"Many companies have requirements that every component material in\u2026","protected":false},"author":1,"featured_media":4280,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[24,61],"tags":[226,267,268,269,41,52,99,115,150,151,153,203,217,218,220,223],"class_list":["post-1073","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-miljoarbete","category-silikoner","tag-silikon-for-elektronik","tag-fukthardande","tag-snabbhardande","tag-ul-godkand","tag-renare-arbetsplats-fri-fran-farliga-kemikalier","tag-nyhetsbrev-om-rtv-silikon","tag-losningsmedel","tag-silikon","tag-elektroniksilikon","tag-kretskortlack-silikon","tag-varmehardande-silikonlack","tag-arbetsmiljo","tag-tennfri-rtv-silikon","tag-ul94-godkand-rtv-silikon","tag-elektronik","tag-kretskortslack"],"acf":[],"_links":{"self":[{"href":"https:\/\/old.tribotec.se\/en\/wp-json\/wp\/v2\/posts\/1073","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/old.tribotec.se\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/old.tribotec.se\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/old.tribotec.se\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/old.tribotec.se\/en\/wp-json\/wp\/v2\/comments?post=1073"}],"version-history":[{"count":0,"href":"https:\/\/old.tribotec.se\/en\/wp-json\/wp\/v2\/posts\/1073\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/old.tribotec.se\/en\/wp-json\/wp\/v2\/media\/4280"}],"wp:attachment":[{"href":"https:\/\/old.tribotec.se\/en\/wp-json\/wp\/v2\/media?parent=1073"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/old.tribotec.se\/en\/wp-json\/wp\/v2\/categories?post=1073"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/old.tribotec.se\/en\/wp-json\/wp\/v2\/tags?post=1073"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}