{"id":16867,"date":"2025-03-23T09:25:50","date_gmt":"2025-03-23T08:25:50","guid":{"rendered":"https:\/\/www.rct-online.de\/magazin\/?p=16867"},"modified":"2026-10-13T12:05:49","modified_gmt":"2026-10-13T10:05:49","slug":"plastic-adhesives-the-right-match-for-every-plastic","status":"publish","type":"post","link":"https:\/\/www.rct-online.de\/magazin\/en\/plastic-adhesives-the-right-match-for-every-plastic\/","title":{"rendered":"Plastic Adhesives: The Right Match for Every Plastic"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_73 ez-toc-wrap-center counter-hierarchy ez-toc-counter ez-toc-white ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.rct-online.de\/magazin\/en\/plastic-adhesives-the-right-match-for-every-plastic\/#Why_Plastics_Need_Special_Adhesives\" title=\"Why Plastics Need Special Adhesives\">Why Plastics Need Special Adhesives<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.rct-online.de\/magazin\/en\/plastic-adhesives-the-right-match-for-every-plastic\/#The_Fundamentals_of_Adhesive_Bonding\" title=\"The Fundamentals of Adhesive Bonding\">The Fundamentals of Adhesive Bonding<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.rct-online.de\/magazin\/en\/plastic-adhesives-the-right-match-for-every-plastic\/#Adhesive_Forces_Play_a_Key_Role_in_the_Bonding_Process\" title=\"Adhesive Forces Play a Key Role in the Bonding Process\">Adhesive Forces Play a Key Role in the Bonding Process<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.rct-online.de\/magazin\/en\/plastic-adhesives-the-right-match-for-every-plastic\/#Cohesive_Forces_Hold_the_Adhesive_Together\" title=\"Cohesive Forces Hold the Adhesive Together\">Cohesive Forces Hold the Adhesive Together<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.rct-online.de\/magazin\/en\/plastic-adhesives-the-right-match-for-every-plastic\/#Key_Factors_for_a_Reliable_Bonding_Process\" title=\"Key Factors for a Reliable Bonding Process\">Key Factors for a Reliable Bonding Process<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.rct-online.de\/magazin\/en\/plastic-adhesives-the-right-match-for-every-plastic\/#Designing_the_Components\" title=\"Designing the Components\">Designing the Components<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.rct-online.de\/magazin\/en\/plastic-adhesives-the-right-match-for-every-plastic\/#Surface_Pretreatment_Is_Essential\" title=\"Surface Pretreatment Is Essential\">Surface Pretreatment Is Essential<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.rct-online.de\/magazin\/en\/plastic-adhesives-the-right-match-for-every-plastic\/#Requirements_That_Plastic_Adhesives_Must_Meet\" title=\"Requirements That Plastic Adhesives Must Meet\">Requirements That Plastic Adhesives Must Meet<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.rct-online.de\/magazin\/en\/plastic-adhesives-the-right-match-for-every-plastic\/#Different_Types_of_Adhesives_for_Every_Plastic\" title=\"Different Types of Adhesives for Every Plastic\">Different Types of Adhesives for Every Plastic<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.rct-online.de\/magazin\/en\/plastic-adhesives-the-right-match-for-every-plastic\/#Physically_Setting_Adhesives\" title=\"Physically Setting Adhesives\">Physically Setting Adhesives<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.rct-online.de\/magazin\/en\/plastic-adhesives-the-right-match-for-every-plastic\/#Chemically_Curing_Adhesives\" title=\"Chemically Curing Adhesives\">Chemically Curing Adhesives<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/www.rct-online.de\/magazin\/en\/plastic-adhesives-the-right-match-for-every-plastic\/#Difficult_Cases_and_the_Right_Plastic_Adhesives\" title=\"Difficult Cases and the Right Plastic Adhesives\">Difficult Cases and the Right Plastic Adhesives<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<p style=\"text-align: justify;\"><strong>Alongside welding, bolting and soldering, adhesive bonding has become one of the most important techniques for joining metals. Engineering and manufacturing already bond 50 % of all components with adhesives. The automotive industry relies most heavily on adhesive bonding. Aerospace, rail and shipbuilding also use it to join components made of pure aluminium, aluminium-magnesium alloys or steels. Two-component adhesives have long proven themselves here, especially those based on <a href=\"https:\/\/www.rct-online.de\/magazin\/en\/epoxy-resin-production-applications-and-fields-of-use\/\">epoxy resins<\/a>. These epoxy adhesives are known as structural adhesives. But what do plastic adhesives need to bond plastics and other materials durably and withstand environmental stresses?<\/strong><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Why_Plastics_Need_Special_Adhesives\"><\/span>Why Plastics Need Special Adhesives<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p style=\"text-align: justify;\">Industrial metal bonding ultimately gets by with just a handful of adhesive types. Joining plastics to one another, or plastics to metals, requires <a href=\"https:\/\/www.rct-online.de\/en\/adhesives-and-lubricants\/adhesives\">suitable adhesives<\/a> developed specifically for the task. Often, only a trial under real operating conditions can show whether a plastic adhesive will create a reliable bond. The reason is the enormous chemical diversity of plastics, which gives them widely varying physicochemical surface properties.<\/p>\n<p><a href=\"https:\/\/www.rct-online.de\/en\/adhesives-and-lubricants\/adhesives\/two-component-adhesives\/30379\/fluoroelastomer-universal-adhesive\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-1488 size-full\" title=\"Universal Fluoroelastomer Adhesive\" src=\"https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2018\/03\/Fluorelastomer-Universalkleber.jpg\" alt=\"Universal Fluoroelastomer Adhesive\" width=\"300\" height=\"300\" srcset=\"https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2018\/03\/Fluorelastomer-Universalkleber.jpg 300w, https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2018\/03\/Fluorelastomer-Universalkleber-150x150.jpg 150w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a> <a href=\"https:\/\/www.rct-online.de\/en\/adhesives-and-lubricants\/adhesives\/one-component-adhesives\/30372\/high-tech-cyanoacrylate-adhesive-plastic\/metal\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-1489 size-full\" title=\"Cyanoacrylate Adhesive - Plastic\/Metal\" src=\"https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2018\/03\/Cyanacrylester-Kleber-Kunststoff-Metall.jpg\" alt=\"Cyanoacrylate Adhesive - Plastic\/Metal\" width=\"300\" height=\"300\" srcset=\"https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2018\/03\/Cyanacrylester-Kleber-Kunststoff-Metall.jpg 300w, https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2018\/03\/Cyanacrylester-Kleber-Kunststoff-Metall-150x150.jpg 150w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n<h2><span class=\"ez-toc-section\" id=\"The_Fundamentals_of_Adhesive_Bonding\"><\/span>The Fundamentals of Adhesive Bonding<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p style=\"text-align: justify;\">A secure, durable bond between two materials starts with understanding what happens during the bonding process.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Adhesive_Forces_Play_a_Key_Role_in_the_Bonding_Process\"><\/span>Adhesive Forces Play a Key Role in the Bonding Process<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"text-align: justify;\">First, the adhesive must wet the substrate surface thoroughly and adhere to it. These bonding forces, known as adhesive forces, arise from physical interactions between the substrate surface layer and the adhesive. They include polar interactions between polar groups, hydrogen bonds and non-polar dispersion forces, a type of van der Waals force.<\/p>\n<p style=\"text-align: justify;\">For a strong, reliable bond, the adhesive and the plastic should match in polarity: both polar or both non-polar. Good wetting matters because adhesive forces act over a very short range of less than one nanometre. For plastics, surface energy describes how easily a surface can be wetted. Plastics with a higher surface energy, such as polyvinyl chloride (PVC), are generally easier to wet. Low-energy surfaces, such as those of polypropylene (PP), polytetrafluoroethylene (PTFE) and polyethylene (PE), resist wetting.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Cohesive_Forces_Hold_the_Adhesive_Together\"><\/span>Cohesive Forces Hold the Adhesive Together<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"text-align: justify;\"><a href=\"https:\/\/www.rct-online.de\/en\/semi-finished-products\/adhesive-tapes-and-tapes\/adhesive-tapes-and-tapes-made-of-elastomers-or-plastics\/30093\/slip-adhesive-tape-made-of-ptfe-standard\"><img loading=\"lazy\" decoding=\"async\" class=\"alignright wp-image-1470 size-full\" style=\"text-align: justify;\" title=\"PTFE Adhesive Slip Tape - Standard\" src=\"https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2018\/03\/Gleitklebeband-aus-PTFE-Standard.jpg\" alt=\"PTFE Adhesive Slip Tape - Standard\" width=\"300\" height=\"300\" srcset=\"https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2018\/03\/Gleitklebeband-aus-PTFE-Standard.jpg 300w, https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2018\/03\/Gleitklebeband-aus-PTFE-Standard-150x150.jpg 150w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a>Alongside the bond between the two surfaces, the adhesive also needs internal strength, which cohesive forces provide. These are the forces that act between atoms or molecules within a substance. During curing, cohesive forces govern parameters such as the viscosity and flow behaviour of the adhesive. They also determine the properties of the cured adhesive, including its tensile strength, temperature resistance and Shore hardness.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Key_Factors_for_a_Reliable_Bonding_Process\"><\/span>Key Factors for a Reliable Bonding Process<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p style=\"text-align: justify;\">Careful planning from start to finish pays off, because many poor bonds stem from application errors. Consider the following points before bonding:<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Designing_the_Components\"><\/span>Designing the Components<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"text-align: justify;\">Bonding plastics successfully requires parts that are designed \u201cfor bonding\u201d. For example, the design must allow the adhesive to wet the contact surfaces completely. Engineers should also maximise the contact area between the parts. A bonded joint usually has to withstand external forces such as tensile or compressive loads, which can create stresses. The aim is to distribute these stresses as evenly as possible and avoid point loads. In addition, the plastic must not contain plasticisers. They can hinder bonding from the outset or escape over time and gradually weaken the bond.<\/p>\n<p><a href=\"https:\/\/www.rct-online.de\/de\/klebstoffe-und-schmierstoffe\/kleber\/einkomponentenkleber\/kleber-fuer-silikon-kautschuk\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-1481 size-full\" title=\"Plastic Adhesive for Silicone Rubber\" src=\"https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2018\/03\/Kleber-f\u00fcr-Silikon-Kautschuk.jpg\" alt=\"Plastic Adhesive for Silicone Rubber\" width=\"300\" height=\"300\" srcset=\"https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2018\/03\/Kleber-f\u00fcr-Silikon-Kautschuk.jpg 300w, https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2018\/03\/Kleber-f\u00fcr-Silikon-Kautschuk-150x150.jpg 150w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a> <a href=\"https:\/\/www.rct-online.de\/en\/adhesives-and-lubricants\/adhesives\/one-component-adhesives\/30368\/silicone-rubber-adhesive-large-scale-adhesion\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-1482 size-full\" title=\"Plastic Adhesive for Silicone Rubber - Large Surfaces\" src=\"https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2018\/03\/Kleber-f\u00fcr-Silikon-Kautschuk-Gro\u00dffl\u00e4chen.jpg\" alt=\"Plastic Adhesive for Silicone Rubber - Large Surfaces\" width=\"300\" height=\"300\" srcset=\"https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2018\/03\/Kleber-f\u00fcr-Silikon-Kautschuk-Gro\u00dffl\u00e4chen.jpg 300w, https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2018\/03\/Kleber-f\u00fcr-Silikon-Kautschuk-Gro\u00dffl\u00e4chen-150x150.jpg 150w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Surface_Pretreatment_Is_Essential\"><\/span>Surface Pretreatment Is Essential<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"text-align: justify;\">Treating the surface before the actual bonding is one of the most important steps. Dirt particles on the surface can impair wetting and with it the entire bonding process. Thoroughly removing adhering dust is therefore the first step towards a strong bond. Bonding plastics also requires removing oils, lubricants and other release agents. These can originate in the manufacturing process of the plastic, for example.<\/p>\n<p style=\"text-align: justify;\">Low-boiling organic solvents such as acetone or alcohols work well for degreasing because they flash off easily. Plasma treatment, corona treatment and flame treatment rank among the most effective methods and therefore see the widest use. They also pose far fewer occupational health risks than handling solvents, and they prepare surfaces optimally for bonding. Another form of surface treatment uses primers or adhesion promoters. Applied immediately before bonding, they form a bridge between the plastic surface and the plastic adhesive.<\/p>\n<p style=\"text-align: justify;\">Chemically active primers, by contrast, modify the surface structure so that plastic adhesives can wet it completely. Finally, mechanical roughening enlarges the surface area and so improves adhesion.<\/p>\n<figure id=\"attachment_1484\" aria-describedby=\"caption-attachment-1484\" style=\"width: 600px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-1484 size-full\" title=\"Surfaces may need special treatment or preparation before bonding with a plastic adhesive\" src=\"https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2018\/03\/Kleben.jpg\" alt=\"Surfaces may need special treatment or preparation before bonding with a plastic adhesive\" width=\"600\" height=\"401\" srcset=\"https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2018\/03\/Kleben.jpg 600w, https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2018\/03\/Kleben-300x201.jpg 300w, https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2018\/03\/Kleben-110x75.jpg 110w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><figcaption id=\"caption-attachment-1484\" class=\"wp-caption-text\">\u00a9 thodonal \/ Fotolia.com<\/figcaption><\/figure>\n<h3><span class=\"ez-toc-section\" id=\"Requirements_That_Plastic_Adhesives_Must_Meet\"><\/span>Requirements That Plastic Adhesives Must Meet<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"text-align: justify;\">The type of plastic, its wettability and its surface energy determine which plastic adhesive is suitable. Further requirements for an adhesive for plastics depend on the application. The key question is how well the bonded joint resists temperature and humidity, as well as solvents and chemicals. Depending on the intended use, the adhesive must also meet physical criteria such as hardness, mechanical load resistance and elasticity.<\/p>\n<blockquote>\n<p style=\"text-align: justify;\">Speciality adhesives offer particular properties \u2013 for example, plastic adhesives that become electrically conductive through added graphite or metal powders.<\/p>\n<\/blockquote>\n<h2><span class=\"ez-toc-section\" id=\"Different_Types_of_Adhesives_for_Every_Plastic\"><\/span>Different Types of Adhesives for Every Plastic<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p style=\"text-align: justify;\">Plastic adhesives fall into two groups, depending on how they set: physically setting and chemically curing adhesives.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Physically_Setting_Adhesives\"><\/span>Physically Setting Adhesives<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"text-align: justify;\">In physically setting adhesives, the polymer already exists in its final form, typically dissolved, dispersed or melted. They wet the surface well and solidify during the bonding process. In solvent-based wet adhesives, the solvent evaporates during bonding and the adhesive solidifies. Contact adhesives also belong to this group. So do pressure-sensitive adhesives. These carry a permanently tacky layer on a backing, as found on adhesive tapes or self-adhesive stamps. Hot-melt adhesives, which solidify again as they cool, are another physically setting type. They contain no solvents and allow thicker bond lines than many other adhesives.<\/p>\n<p><a href=\"https:\/\/www.rct-online.de\/en\/adhesives-and-lubricants\/adhesives\/two-component-adhesives\/30377\/ptfe-adhesive-based-on-synthetic-rubber-contact-adhesive\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-1475 size-full\" title=\"PTFE Adhesive Based on Synthetic Rubber (Contact Adhesive)\" src=\"https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2018\/03\/PTFE-Kleber-auf-synthetischer-Kautschukbasis-Kontaktkleber.jpg\" alt=\"PTFE Adhesive Based on Synthetic Rubber (Contact Adhesive)\" width=\"600\" height=\"498\" srcset=\"https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2018\/03\/PTFE-Kleber-auf-synthetischer-Kautschukbasis-Kontaktkleber.jpg 600w, https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2018\/03\/PTFE-Kleber-auf-synthetischer-Kautschukbasis-Kontaktkleber-300x249.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/a><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Chemically_Curing_Adhesives\"><\/span>Chemically Curing Adhesives<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"text-align: justify;\">Chemically curing adhesives form the bond through a chemical reaction. This group divides into one-component and <a href=\"https:\/\/www.rct-online.de\/en\/adhesives-and-lubricants\/adhesives\/two-component-adhesives\">two-component adhesives<\/a>. A typical example of <a href=\"https:\/\/www.rct-online.de\/en\/adhesives-and-lubricants\/adhesives\/one-component-adhesives\">one-component adhesives<\/a> is cyanoacrylate adhesive, commonly known as superglue. Manufacturers often thicken the low-viscosity adhesive with fillers to make it easier to handle. With this type of adhesive, external conditions such as atmospheric moisture or UV light trigger the polymerisation. Silicone rubber adhesives crosslink on the same principle. Here, a liquid or paste-like silicone formulation crosslinks at room temperature. In construction, silicone rubber adhesive often serves as a sealant for joints.<\/p>\n<p><a href=\"https:\/\/www.rct-online.de\/en\/adhesives-and-lubricants\/adhesives\/one-component-adhesives\/30371\/high-tech-cyanoacrylate-adhesive-standard-plastics\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-1472 size-full\" title=\"Cyanoacrylate Adhesive - Plastic Adhesive for Standard Plastics\" src=\"https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2018\/03\/Cyanacrylester-Kleber-Standard-Kunststoffe.jpg\" alt=\"Cyanoacrylate Adhesive - Plastic Adhesive for Standard Plastics\" width=\"300\" height=\"300\" srcset=\"https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2018\/03\/Cyanacrylester-Kleber-Standard-Kunststoffe.jpg 300w, https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2018\/03\/Cyanacrylester-Kleber-Standard-Kunststoffe-150x150.jpg 150w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a> <img loading=\"lazy\" decoding=\"async\" class=\"wp-image-1477 size-full alignnone\" title=\"Cyanoacrylate Adhesive for Difficult-to-Bond Plastics\" src=\"https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2018\/03\/Cyanacrylester-Kleber-f\u00fcr-schwer-klebbare-Kunststoffe.jpg\" alt=\"Cyanoacrylate Adhesive for Difficult-to-Bond Plastics\" width=\"300\" height=\"300\" srcset=\"https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2018\/03\/Cyanacrylester-Kleber-f\u00fcr-schwer-klebbare-Kunststoffe.jpg 300w, https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2018\/03\/Cyanacrylester-Kleber-f\u00fcr-schwer-klebbare-Kunststoffe-150x150.jpg 150w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Difficult_Cases_and_the_Right_Plastic_Adhesives\"><\/span>Difficult Cases and the Right Plastic Adhesives<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"text-align: justify;\">Acrylate-based adhesives for plastics, such as cyanoacrylates, bond many plastics. These include acrylonitrile butadiene styrene copolymer (ABS), polymethyl methacrylate (Plexiglas\u00ae, PMMA) and polycarbonate (PC). A modified adhesive based on methyl methacrylate (MMA) suits polyvinyl chloride (PVC), especially rigid PVC. These plastic adhesives can also bond polyolefins such as polyethylene (PE) and polypropylene (PP). This requires mechanically roughening the bonding surfaces or pretreating them with a primer first. However, such bonds do not always prove durable.<\/p>\n<p><a href=\"https:\/\/www.rct-online.de\/en\/adhesives-and-lubricants\/adhesives\/one-component-adhesives\/30370\/tangit-pvc-u-adhesive\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-1467 size-full\" title=\"Tangit\u00ae PVC-U Adhesive\" src=\"https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2018\/03\/Tangit\u00ae-PVC-U-Kleber.jpg\" alt=\"Tangit\u00ae PVC-U Adhesive\" width=\"300\" height=\"369\" srcset=\"https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2018\/03\/Tangit\u00ae-PVC-U-Kleber.jpg 300w, https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2018\/03\/Tangit\u00ae-PVC-U-Kleber-244x300.jpg 244w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a> <a href=\"https:\/\/www.rct-online.de\/en\/semi-finished-products\/foils\/ptfe-foils\/30138\/ptfe-film-virgin-self-adhesive-on-one-side\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-1468 size-full\" title=\"PTFE Film (Virgin) - Self-Adhesive on One Side\" src=\"https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2018\/03\/PTFE-Folie-virginal-einseitig-selbstklebend.jpg\" alt=\"PTFE Film (Virgin) - Self-Adhesive on One Side\" width=\"300\" height=\"369\" srcset=\"https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2018\/03\/PTFE-Folie-virginal-einseitig-selbstklebend.jpg 300w, https:\/\/www.rct-online.de\/magazin\/wp-content\/uploads\/2018\/03\/PTFE-Folie-virginal-einseitig-selbstklebend-244x300.jpg 244w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n<p style=\"text-align: justify;\">Bonding polytetrafluoroethylene (PTFE) and other fluoroplastics is particularly tricky. It requires pretreatment with special primers that chemically modify the bonding surfaces and so make them wettable. Manufacturers use stabilised solutions containing metallic sodium for this.<\/p>\n<p style=\"text-align: justify;\">The free alkali metal in these formulations reacts with the chemically bound fluorine in the plastic. This leaves a roughened surface with a firmly adhering carbon layer that the adhesive can wet. Suppliers usually offer PTFE adhesives only in proven primer\/adhesive sets to ensure the final joint holds.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Alongside welding, bolting and soldering, adhesive bonding has become one of the most important techniques for joining metals. Engineering and manufacturing already bond 50 % of all components with adhesives. The automotive industry relies most heavily on adhesive bonding. Aerospace, rail and shipbuilding also use it to join components made of pure aluminium, aluminium-magnesium alloys &hellip;<\/p>\n","protected":false},"author":7,"featured_media":11390,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1,2744],"tags":[4418,4417,4416,4415,4413,4414],"class_list":["post-16867","post","type-post","status-publish","format-standard","has-post-thumbnail","","category-all-articles","category-chemical-technology-in-action","tag-adhesive-slip-tape","tag-adhesives","tag-chemically-curing-adhesives","tag-one-component-adhesives","tag-plastic-adhesives","tag-two-component-adhesives"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Plastic Adhesives: The Right Match for Every Plastic<\/title>\n<meta name=\"description\" content=\"Plastic adhesives for every type of plastic: Acrylate-based \u2714 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