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Sealants, gaskets and adhesives
Published in Arthur Lyons, Materials for Architects and Builders, 2019
Cyanoacrylates are single-component adhesives that bond components held in tight contact within seconds. A high-tensile bond is produced between metals, ceramics, most plastics and rubber. The curing is activated by adsorbed moisture on the material surfaces, and only small quantities of the clear adhesive are required. The bond is resistant to oil, water, solvents, acid and alkalis but does not exhibit high impact resistance. A range of adhesive viscosities is manufactured to match to particular applications. Generally, the low-viscosity material is appropriate for close fitting joints and higher viscosities for the larger gaps.
Cyanoacrylate Adhesives
Published in Gerald L. Schneberger, Adhesives in Manufacturing, 2018
Cyanoacrylates form strong bonds on a variety of substrates, such as metals, plastics, rubbers, hardwoods, and other nonporous materials with close-fitting surfaces. Typical bond strengths of low-viscosity, methyl and ethyl cyanoacrylate adhesives are shown in Table 3. Like most adhesives, cyanoacrylates perform best when used to bond surfaces which are thoroughly clean.
Methods of joining
Published in Andrew Livesey, Alan Robinson, The Repair of Vehicle Bodies, 2018
This has important consequences for later production processes. Cyanoacrylates set in seconds and reach full strength in minutes. Anaerobics, epoxies and the toughened variants take longer to harden. However, all three can be made to cure rapidly using a variety of techniques.
Surgical applications of intracorporal tissue adhesive agents: current evidence and future development
Published in Expert Review of Medical Devices, 2020
Nicholas Gillman, David Lloyd, Randy Bindra, Rui Ruan, Minghao Zheng
Current adhesive agents are predominantly used as adjuncts to manual closure and show clinical benefits including better patient outcomes and optimizing hospital expenditure, especially in intracorporal hemostasis and anastomotic procedures. Many agents have been trialed outside the scope of their indication, with varied results. Fibrin sealants possess good biocompatibility, however, show weak adhesion, especially in wet conditions. Cross-linked albumin adhesives show improved adhesive strength; however, cytotoxicity and immunogenicity remains a clinical concern. Synthetic PEG polymers generally exhibit decreased immunogenicity, however, their expansile properties can lead to adverse outcomes like nerve and tissue compression. Polyurethane adhesives have improved biocompatibility through isocyanate modification, however long-term studies are lacking. Finally, cyanoacrylate benefit from strong adhesion and cheap production means, however toxicity of degradation products is an ongoing concern.
Preparation techniques of thin cyanoacrylate adhesive films for interface analysis
Published in The Journal of Adhesion, 2022
Philipp Moritz, Friedrich Bürger, Lienhard Wegewitz, Wolfgang Maus-Friedrichs
Cyanoacrylates are the main component of fast curing adhesives, commonly known as ‘superglues’. These adhesives have a wide range of commercial applications, e.g. joining hybrid materials in industry,[1,2] exposure of invisible fingerprints in forensic science,[3,4] as a bio-adhesive in the biomedical field,[5,6] but also as a domestic adhesive. The monomer unit of cyanoacrylates is shown in Figure 1.