{"id":10415,"date":"2025-12-09T15:09:59","date_gmt":"2025-12-09T14:09:59","guid":{"rendered":"https:\/\/ikv-aachen.de\/werkstoffliches-recycling-von-cfk-vitrimere-als-wegbereiter\/"},"modified":"2025-12-16T16:39:14","modified_gmt":"2025-12-16T15:39:14","slug":"werkstoffliches-recycling-von-cfk-vitrimere-als-wegbereiter","status":"publish","type":"post","link":"https:\/\/ikv-aachen.de\/en\/werkstoffliches-recycling-von-cfk-vitrimere-als-wegbereiter\/","title":{"rendered":"Mechanical recycling of CFRP &#8211; Vitrimers as enablers"},"content":{"rendered":"<style type=\"text\/css\">\n    #single-header-block_784004ec31e3def6f10645a5a862de7f .swiperThumbsNavi .swiper-slide {\n        opacity: 0.4;\n    }\n\n    #single-header-block_784004ec31e3def6f10645a5a862de7f .swiperThumbsNavi .swiper-slide-thumb-active {\n        opacity: 1;\n    }\n<\/style>\n    <section id=\"single-header-block_784004ec31e3def6f10645a5a862de7f\" class=\"block-single-header theGridWrapper \">\n        <div class=\"theGrid12\">\n            <div class=\" col-start-2 col-span-10 md:col-start-3  md:col-span-8\">\n                <h2 class=\"font-serif font-semibold text-blue text-sm w-4\/5\">\n                                    <\/h2>\n                                    <div class=\"mt-base text-blue text-sm font border-l-8  border-blue pl-base my-12 leading-normal \">\n                        Fibre-reinforced plastics (FRP) are key materials for lightweight construction in aviation, mobility and energy technology. While they are virtually unbeatable in terms of stiffness and strength, they have one disadvantage: they are only recyclable to a limited extent. The Institute for Plastics Processing (IKV) in Industry and Craft at RWTH Aachen University is therefore researching the new material class of vitrimers as a matrix system that enables the material recycling and reuse of continuous fibre composite structures. The results of this work will be presented in Session\u00a06, Mechanical recycling of CFRP: Vitrimers as enablers, of the 33rd International Colloquium Plastics Technology.                    <\/div>\n                                            <\/div>\n        <\/div>\n    <\/section>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Vitrimers &#8211; a new class of materials with recycling potential<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Vitrimers form a new class of plastics with properties similar to thermosets. Their key feature is the presence of dynamic covalent bonds that form so-called adaptive networks or covalent adaptive networks (CAN), in the plastic. Under certain defined conditions, the bonds in the network can be specifically broken and re-formed. Vitrimers thus combine the thermal and chemical resistance of classic epoxy resins with the weldability and mendability of thermoplastics (Figure\u00a01). This opens up new options for recycling, repairing and repurposing FRPs. \u201cBy using vitrimers, we can not only repair fibre composite structures more easily, but also reuse them in a targeted manner at the end of their life cycle,\u201d explains Prof. Christian Hopmann, Director of the IKV. \u201cThis lays the foundation for a truly circular economy in lightweight construction.\u201d<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Marc Fette, CEO of the Composite Technology Centre (CTC GmbH), will broaden this perspective on material recycling during the colloquium with a presentation on challenges and potential of FRP recycling for sustainable aviation. Particular attention will be paid to a holistic view of the entire product life cycle with regard to sustainable and economically viable CFRP recycling. Even before components are manufactured, the concept of design-for-recycling or eco-design is essential, enhanced by the selection of suitable materials.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Potential of vitrimer-based composite systems<\/strong><strong><\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">IKV is investigating the entire value chain of vitrimer-based composite systems in several research projects. First results of this work will be presented in Session\u00a06 at the colloquium. Among other things, this covers the recycling of CFRP components using vitrimer matrix systems. In a demonstration project, epoxy resins with the vitrimer hardener bis-(4-aminophenyl) disulphide (4-AFD) were used to produce carbon fibre sheets that can be functionalised with recycled material after curing. A rib made of vitrimer recyclate applied by hot pressing at 190\u00a0\u00b0C increases the flexural stiffness and demonstrates the weldability and recyclability of the material.<\/p>\n\n\n<figure class=\" relative flex flex-col gap-2xs mb-xs md:mb-l xl:mb-xl\"><img decoding=\"async\"  class=\" w-full  \"  src=\"https:\/\/ikv-aachen.de\/wp-content\/uploads\/2025\/12\/3-1-EN@10x-webseite.jpg\" srcset=\"https:\/\/ikv-aachen.de\/wp-content\/uploads\/2025\/12\/3-1-EN@10x-webseite-748x499.jpg 748w, https:\/\/ikv-aachen.de\/wp-content\/uploads\/2025\/12\/3-1-EN@10x-webseite-1536x1024.jpg 1536w, https:\/\/ikv-aachen.de\/wp-content\/uploads\/2025\/12\/3-1-EN@10x-webseite-768x512.jpg 768w\" sizes=\"auto, (max-width: 1536px) 100vw, 1536px\" width=\"1536\" height=\"1024\" alt=\"3-1-EN@10x-webseite\" loading=\"lazy\" \/><span class=\" text-copyright order-3 justify-end text-right w-full  w-full \">&copy; IKV<\/span><figcaption class=\" w-full  text-figcaption justify-end text-right \">Figure 1: Vitrimers form a new class of plastics with a new range of properties that combine the processing characteristics of thermoplastics with the material performance of thermosets.<\/figcaption><\/figure>\n\n\n<p class=\"wp-block-paragraph\">Another project describes a method for the multiple use of continuous fibre-reinforced laminates. Here, IKV demonstrated that continuously fibre-reinforced vitrimer laminates can be separated from each other after their first use and then welded back together again. The structure of the continuous fibres remains intact, enabling a second phase of use without the need for complex chemical separation. The investigations show that the self-healing ability of the material remains intact after several recycling cycles.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong><strong><strong>Circular strategies for sustainable lightweight construction<\/strong><\/strong><\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The research team at IKV sees the development of vitrimer-based fibre composite systems as a decisive step towards sustainable lightweight construction strategies. The combination of high mechanical performance and material recycling opens up new fields of application \u2013 especially for battery housings in electric vehicles or structural aviation components. Session\u00a06 of the colloquium will demonstrate that FRP can be designed in such a way that it is not waste at the end of its life cycle, but raw material for new products. Vitrimers thus enable closing the material cycle for high-performance composites for the first time.<\/p>\n\n\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary><strong>Vitrimer technology and lightweight construction at the 33<sup>rd<\/sup> International Colloquium Plastics Technology<\/strong><\/summary>\n<p class=\"wp-block-paragraph\">The topics of lightweight construction and fibre composites in general will be addressed in<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Session\u00a03: Plastics as a key to scaling the hydrogen economy<\/li>\n\n\n\n<li>Session\u00a06: Mechanical recycling of CFRP: Vitrimers as enablers<\/li>\n\n\n\n<li>Session\u00a010: Artificial intelligence in product development and simulation<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">each with a keynote speech from industry and two scientific presentations from the IKV.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Visitors can gain an insight into the processing and recycling of new materials as part of \u2018IKV 360\u00b0 \u2013 Research Live\u2019 at the Technical Centre for Fibre-Reinforced Plastics.<\/p>\n<\/details>\n","protected":false},"excerpt":{"rendered":"<p>Fiber-reinforced plastics are key materials for lightweight construction &#8211; but recycling them remains a challenge. With vitrimers, IKV is developing a new matrix class that enables the material recycling of continuous fiber composites. IKV shares initial findings at the 33rd International Colloquium on Plastics Technology.<\/p>\n","protected":false},"author":3,"featured_media":10329,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[592,590],"tags":[1125,890,874,1271],"research_fields":[809,810,817],"class_list":["post-10415","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-events","category-research","tag-fvk-en","tag-lightweight-pressure-vessel","tag-recycling-en","tag-vitrimere","research_fields-fiber-reinforced-plastics","research_fields-lightweight-technologies","research_fields-materials-technology"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Mechanical recycling of CFRP - Vitrimers as enablers | IKV-Aachen<\/title>\n<meta name=\"description\" content=\"Fiber-reinforced plastics are key materials for lightweight construction - but recycling them remains a challenge. 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IKV shares initial findings at the 33rd International Colloquium on Plastics Technology.","breadcrumb":{"@id":"https:\/\/ikv-aachen.de\/en\/werkstoffliches-recycling-von-cfk-vitrimere-als-wegbereiter\/#breadcrumb"},"inLanguage":"en-GB","potentialAction":[{"@type":"ReadAction","target":["https:\/\/ikv-aachen.de\/en\/werkstoffliches-recycling-von-cfk-vitrimere-als-wegbereiter\/"]}]},{"@type":"ImageObject","inLanguage":"en-GB","@id":"https:\/\/ikv-aachen.de\/en\/werkstoffliches-recycling-von-cfk-vitrimere-als-wegbereiter\/#primaryimage","url":"https:\/\/ikv-aachen.de\/wp-content\/uploads\/2025\/12\/33.-Kolloquium-Vitrimere.jpg","contentUrl":"https:\/\/ikv-aachen.de\/wp-content\/uploads\/2025\/12\/33.-Kolloquium-Vitrimere.jpg","width":1800,"height":1200,"caption":"Abbildung 1: Vitrimere bilden eine neue Kunststoffklasse mit einem neuen Eigenschaftsspektrum, das die Verarbeitungseigenschaften von Thermoplasten mit der Werkstoffperformance von Duroplasten vereint."},{"@type":"BreadcrumbList","@id":"https:\/\/ikv-aachen.de\/en\/werkstoffliches-recycling-von-cfk-vitrimere-als-wegbereiter\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/ikv-aachen.de\/en\/"},{"@type":"ListItem","position":2,"name":"Mechanical recycling of CFRP &#8211; Vitrimers as enablers"}]},{"@type":"WebSite","@id":"https:\/\/ikv-aachen.de\/en\/#website","url":"https:\/\/ikv-aachen.de\/en\/","name":"IKV-Aachen","description":"Forschung f\u00fcr die Praxis","publisher":{"@id":"https:\/\/ikv-aachen.de\/en\/#organization"},"alternateName":"Institut f\u00fcr Kunststoffverarbeitung","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/ikv-aachen.de\/en\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-GB"},{"@type":"Organization","@id":"https:\/\/ikv-aachen.de\/en\/#organization","name":"IKV-Aachen","alternateName":"Institut f\u00fcr Kunststoffverarbeitung (IKV)","url":"https:\/\/ikv-aachen.de\/en\/","logo":{"@type":"ImageObject","inLanguage":"en-GB","@id":"https:\/\/ikv-aachen.de\/en\/#\/schema\/logo\/image\/","url":"https:\/\/ikv-aachen.de\/wp-content\/uploads\/2025\/02\/ikv-ikv-1.png","contentUrl":"https:\/\/ikv-aachen.de\/wp-content\/uploads\/2025\/02\/ikv-ikv-1.png","width":512,"height":512,"caption":"IKV-Aachen"},"image":{"@id":"https:\/\/ikv-aachen.de\/en\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/profile.php?id=523026911193540&_rdr","https:\/\/www.instagram.com\/ikvaachen\/"]},{"@type":"Person","@id":"https:\/\/ikv-aachen.de\/en\/#\/schema\/person\/78e8362936cff70f361b214e5b135720","name":"Rebecca Hierlwimmer","image":{"@type":"ImageObject","inLanguage":"en-GB","@id":"https:\/\/secure.gravatar.com\/avatar\/58c84683696bd96b01cf2b75f7af5c9dee2ec5cc56406dbd23b6a997704313db?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/58c84683696bd96b01cf2b75f7af5c9dee2ec5cc56406dbd23b6a997704313db?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/58c84683696bd96b01cf2b75f7af5c9dee2ec5cc56406dbd23b6a997704313db?s=96&d=mm&r=g","caption":"Rebecca Hierlwimmer"}}]}},"_links":{"self":[{"href":"https:\/\/ikv-aachen.de\/en\/wp-json\/wp\/v2\/posts\/10415","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ikv-aachen.de\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ikv-aachen.de\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ikv-aachen.de\/en\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/ikv-aachen.de\/en\/wp-json\/wp\/v2\/comments?post=10415"}],"version-history":[{"count":5,"href":"https:\/\/ikv-aachen.de\/en\/wp-json\/wp\/v2\/posts\/10415\/revisions"}],"predecessor-version":[{"id":10424,"href":"https:\/\/ikv-aachen.de\/en\/wp-json\/wp\/v2\/posts\/10415\/revisions\/10424"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ikv-aachen.de\/en\/wp-json\/wp\/v2\/media\/10329"}],"wp:attachment":[{"href":"https:\/\/ikv-aachen.de\/en\/wp-json\/wp\/v2\/media?parent=10415"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ikv-aachen.de\/en\/wp-json\/wp\/v2\/categories?post=10415"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ikv-aachen.de\/en\/wp-json\/wp\/v2\/tags?post=10415"},{"taxonomy":"research_fields","embeddable":true,"href":"https:\/\/ikv-aachen.de\/en\/wp-json\/wp\/v2\/research_fields?post=10415"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}