{"id":1544,"date":"2015-03-24T21:48:37","date_gmt":"2015-03-24T21:48:37","guid":{"rendered":"https:\/\/permabond.com\/maximum-gap-fill-adhesive\/"},"modified":"2025-02-11T10:02:47","modified_gmt":"2025-02-11T10:02:47","slug":"maximum-gap-fill-adhesive","status":"publish","type":"post","link":"https:\/\/permabond.com\/es\/maximum-gap-fill-adhesive\/","title":{"rendered":"Maximum Gap Fill of Adhesive"},"content":{"rendered":"<h2>Maximum Gap Fill<\/h2>\n<p>Maximum Gap Fill of the adhesive is often stated on the technical data sheet, but what does it mean? The Maximum Gap Fill of an adhesive may be related to:<\/p>\n<ul>\n<li>Cure depth<\/li>\n<li>Bond strength<\/li>\n<li>Viscosity<\/li>\n<li>Or a combination of the three<\/li>\n<\/ul>\n<h2>Cure Depth<\/h2>\n<p>Some adhesives require activation by either moisture, activator, or in the case of anaerobic adhesives &#8211; the activator is the metal surface itself.\u00a0 With these adhesive technologies, the maximum gap fill refers to the distance or depth that the adhesive will cure through if the activator is on one surface. However, for additional cure depth or gap fill, activate both surfaces.<\/p>\n<h2>Maximum Gap Fill for Optimum Bond Strength vs Maximum Gap Fill for Potting<\/h2>\n<p>One might question why a two component adhesive has a maximum gap fill listed because any amount of adhesive can be mixed and will set (although it is important to note how much material may be safely mixed without creating too much heat).\u00a0 In these cases, the maximum gap fill is referenced to ensure good shear strength.\u00a0 Surpassing the recommended maximum gap fill may reduce the shear strength of the bond. The shear strength of a bond with an excessive gap is dependent upon the tensile strength of the adhesive as well as the adhesive strength to the substrates bonded.<\/p>\n<p>For <a href=\"https:\/\/permabond.com\/products\/uv-glue-uv-adhesive\/\" target=\"_blank\" rel=\"noopener\">UV and Visible Light Cure Adhesives<\/a> the maximum gap fill for maximum shear strength may be listed. But the actual maximum gap fill capabilities depend upon the adhesive formulation, as well as the intensity and wavelength of the light.\u00a0 Low intensity UV light will allow a large cure depth.\u00a0 For example, a 5 gallon pail of some <a href=\"https:\/\/permabond.com\/products\/uv-glue-uv-adhesive\/\" target=\"_blank\" rel=\"noopener\">UV adhesives<\/a> will cure through to the bottom of the pail if left in the sun for a day or two.\u00a0 Very high intensity light will cure through a much shorter distance (generally less than an inch).<\/p>\n<p>Single component moisture cure adhesives like Permabond <a href=\"https:\/\/permabond.com\/products\/flexible-adhesives\/\" target=\"_blank\" rel=\"noopener\">MS Polymers <\/a>may list cure in mm\/ hours.\u00a0 In other words the adhesive will cure 5mm deep every 24 hours.\u00a0 Depending on the joint design the adhesive can reach a point in which the cured adhesive cuts off the supply of moisture. And thus shuts off the cure mechanism.<\/p>\n<h2>Viscosity<\/h2>\n<p>Often adhesive specialists will use the term gap fill to refer to how tall the adhesive will stand up. In other words, what viscosity will prevent it from running out of the joint? A very thin adhesive will flow out of a large gap. But a higher viscosity adhesive with the appropriate rheology will stay in place.<\/p>\n<p>Contact an adhesive specialist to determine the appropriate maximum gap of your application <a href=\"https:\/\/permabond.com\/technical-support-request\/\">Technical Support Request<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Maximum Gap Fill Maximum Gap Fill of the adhesive is often stated on the technical data sheet, but what does it mean? The Maximum Gap Fill of an adhesive may be related to: Cure depth Bond strength Viscosity Or a combination of the three Cure Depth Some adhesives require activation by either moisture, activator, or [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":11855,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[804,613],"tags":[],"class_list":["post-1544","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-adhesive-selection-and-use-fr","category-troubleshooting-2"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.3 (Yoast SEO v27.3) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Gap Filling Adhesive | Maximum Gap Fill | Permabond<\/title>\n<meta name=\"description\" content=\"The maximum gap fill of an adhesive can refer to several things depending upon the type of 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Gibbons","image":{"@type":"ImageObject","inLanguage":"es","@id":"https:\/\/secure.gravatar.com\/avatar\/ef30a45eda5c8ff1e3f4c6288df66f8a58ab5b054fecced621a7c58e0e6fe4ba?s=96&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/ef30a45eda5c8ff1e3f4c6288df66f8a58ab5b054fecced621a7c58e0e6fe4ba?s=96&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/ef30a45eda5c8ff1e3f4c6288df66f8a58ab5b054fecced621a7c58e0e6fe4ba?s=96&r=g","caption":"Laurie Gibbons"},"description":"Laurie has worked in the adhesive industry for over 30 years. 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