{"id":1891,"date":"2014-04-23T23:54:35","date_gmt":"2014-04-23T23:54:35","guid":{"rendered":"https:\/\/permab.mdwclientsites.com\/mma-methylmethacrylate-adhesives\/"},"modified":"2025-02-11T22:14:41","modified_gmt":"2025-02-11T22:14:41","slug":"mma-methylmethacrylate-adhesives","status":"publish","type":"post","link":"https:\/\/permab.mdwclientsites.com\/pt-br\/mma-methylmethacrylate-adhesives\/","title":{"rendered":"Methylmethacrylate Adhesives (MMAs), Acrylic Adhesives"},"content":{"rendered":"<p><img fetchpriority=\"high\" decoding=\"async\" class=\"size-medium wp-image-1529 alignleft\" src=\"https:\/\/permab.mdwclientsites.com\/wp-content\/uploads\/2022\/11\/MMA-300x178.jpg\" alt=\"\" width=\"300\" height=\"178\" \/><\/p>\n<h2>WHAT ARE METHYLMETHACRYLATE ADHESIVES (MMAs)?<\/h2>\n<p>Methylmethacrylate adhesives (MMA\u2019s) are reactive <a href=\"https:\/\/permab.mdwclientsites.com\/products\/structural-acrylic-adhesives\/\" target=\"_blank\" rel=\"noopener\">acrylic adhesives<\/a> normally comprising resin and initiator (or a resin and hardener). They cure quickly at room temperature and strength development is rapid. Once cure is complete, the material forms a strong thermoplastic with excellent resistance to shear, peel and impact stresses.\u00a0 Most MMA adhesives contain rubber which helps give them these strength properties.<\/p>\n<h2>WHAT DO THEY BOND?<\/h2>\n<p>MMA adhesives will bond most substrate materials including metal, magnets, plastic, glass, wood, and composite materials and are fairly tolerant of poor surface condition (such as oil contamination). Because of their high strength performance, they often replace welding or riveting and can allow greater freedom of material choice. They bond dissimilar materials as well as improve finished appearance. The inbuilt rubber toughening system gives a degree of flexibility required to cope with differential thermal expansion and contraction and thermal shock.<\/p>\n<h2>INDUSTRIES<\/h2>\n<p><span style=\"line-height: 1.5;\">Aerospace, automotive, composites, and transport market sectors us MMAs. Often for structural bonding of advanced materials. They also bond magnets for items such as loudspeakers and electric motors. Their rapid cure speed is desirable on a fast moving production line and their strength performance is above and beyond what is required.<\/span><\/p>\n<h2>PACKAGING AND APPLICATION of MMAs<\/h2>\n<p>\u201cNo-Mix\u201d MMA adhesives are packaged as a resin and initiator. Apply the initiator one surface by brushing or spraying, and the resin on the other. When the joint is closed and the resin comes into contact with the initiator it triggers the reaction. Reactive acrylic cure is quite different to other two part systems as the reaction is catalytic and fairly insensitive to the amount of initiator used whereas epoxy and polyurethane adhesives rely on precise mixing in the correct mix ratio.<\/p>\n<p>\u201cPre-Mix\u201d MMA adhesives are normally packaged in cartridges with static mixing nozzles and can be used in dispensing guns or automatic dispensing equipment. These products have the added benefit of good gap fill capability. Their light consistency and thixotropic rheology allow for easy dispensing and accurate application.<\/p>\n<h2>HOW DO METHYLMETHACRYLATE ADHESIVES DIFFER FROM OTHER STRUCTURAL ADHESIVES, SUCH AS EPOXY OR PU?<\/h2>\n<p>MMA adhesives normally have a much higher peel strength and better temperature resistance. Also, faster strength development means parts are ready sooner. Applications such as bus manufacturing, where the adhesive bonds the panels or \u201cskins\u201d require fast strength development. You can unclamp the parts quickly to reduce work in progress. On the downside, they tend to smell more than other adhesives (although the odour does wear off quite quickly). Also, they are flammable and can cost more to ship.<\/p>\n<p>Permabond chemists are able to formulate MMA adhesives to meet your specific requirements.\u00a0 If you have an application you would like to discuss with a technical advisor or would like to receive further information, please contact <a href=\"mailto:help.europe@permab.mdwclientsites.com\">help.europe@permab.mdwclientsites.com<\/a> or <a href=\"mailto:info.americas@permab.mdwclientsites.com\">info.americas@permab.mdwclientsites.com<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>WHAT ARE METHYLMETHACRYLATE ADHESIVES (MMAs)? Methylmethacrylate adhesives (MMA\u2019s) are reactive acrylic adhesives normally comprising resin and initiator (or a resin and hardener). They cure quickly at room temperature and strength development is rapid. Once cure is complete, the material forms a strong thermoplastic with excellent resistance to shear, peel and impact stresses.\u00a0 Most MMA adhesives [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":1892,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[614,620],"tags":[],"class_list":["post-1891","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-adhesive-types-2","category-structural-acrylic-adhesives"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.4 (Yoast SEO v27.5) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Methylmethacrylate Adhesives (MMAs) | Acrylic Adhesives<\/title>\n<meta name=\"description\" content=\"Methylmethacrylate adhesives (MMAs) are reactive acrylic adhesives normally comprising resin and initiator (or a resin and hardener).\" 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