ATIPIC & BPG Scientific & Technical WorkshopOn 11 septembre 2023 by Jennifer ATIPIC
Both Boards of ATIPIC & BPG invite you to our attend their annual workshop with the theme
Where Polymers Meet Coatings
|Time||PROGRAM / Titles||Speakers (Company)|
|13:30||Welcome / Registration (coffee/tea)|
|14:00||Opening Session 1 by Dr. Jacques Warnon,|
|14:05||FEM to predict water uptake and transport in organic coatings||Mats Meeusen|
|14:40||Development of Bio-based Paints with high Corrosion Performance||Anne -Pascale Romano |
|15:15||Coffee Break & time for net-working|
|15:30||Opening session 2 by Prof. Dr Louis Pitet, |
|15:35||Vitrimeric Epoxy Coatings and Adhesives: Durable Protection and On-demand Debonding||Prof. Filip Du Prez|
|16:10||Rethinking Polymers and Composites in the Context of Sustainability.||Prof. Baris Kumru|
|16:45||Closure and networking drinks|
14:05 hrs – FEM to predict water uptake and transport in organic coatings – Mats Meeusen (VUB)
The protection of metal surfaces against corrosion is commonly achieved by the application of organic coatings. A dedicated evaluation of those coating systems is strictly necessary before putting them into service. While outdoor test programs are time intensive and accelerated corrosion tests can lead to limited service performance information, predictive modelling of the durability and lifetime of organic coated metals under long-term environmental corrosion can provide a promising alternative.
In this study, a finite element modelling (FEM) approach is followed to model the water uptake of organic coatings. Therefore we start from a physical model, where not only Fickian diffusion of water is taken into account but also the adsorption/desorption reaction of water on the polymer matrix. Starting from a number of important coating parameters, gravimetric and Fourier transform infrared (FTIR) measurements as the model input, the local water concentration over the coating thickness as a function of time is modelled in Comsol multiphysics for a number of organic coatings.
At this stage, the challenge comes to light to correctly validate the predicted water uptake with experimental water uptake profiles. The constraints of the FEM model and EIS experiments and the discrepancies between them are highlighted in order to carry out a reliable model validation and eventually leading to model improvements.
14:40 hrs – Development of Bio-based Paints with high Corrosion Performance – Anne -Pascale Romano (Materia Nova)
This study is carried out in the frame of Interreg FWVl project “WB Durapaint” which aims at developing a high-performance waterborne painting system with low environmental impact.
In order to answer industrial and social environmental evolution, paint market turned towards less toxic waterborne resins and lately toward biobased resins. Nowadays, waterborne resins are widely used in painting formulations, but still using toxic isocyanate, while biobased paints use is limited due to their low global performance and durability. This study aims at developing non-toxic, low environmental impact paint formulations with improved properties such as corrosion protection and resistance to weathering. Starting from a commercial formulation, bio-based non-isocyanate binder is used for substituting existing resins.
The modified and reference paint formulations were applied on steel samples. The coating properties were evaluated in terms of aspect, adherence, hardness, etc. The corrosion protection was evaluated by standardized salt spray test on scratched samples. The life cycle analysis of the paints was also carried out.
15:35 hrs. – Vitrimeric Epoxy Coatings and Adhesives: Durable Protection and On-demand Debonding – Prof. Filip Du Prez (Ghent University)
A first part of the presentation will describe the synthesis and application of vitrimer epoxy coatings for long-term corrosion protection of metal surfaces1. To that end, a polyamine curing agent based on vinylogous urethanes (VUs) was developed to add repairability, recyclability and recoatability to thermosetting materials. Thin films with excellent resistance to water penetration and damage could be obtained by combining a dynamic hardener with existing epoxy resins, resulting in good barrier properties.
Various formulations were investigated yielding transparent coatings with durable corrosion protection, even after being scratched, exposed to saltwater, and subjected to steam condensation. Furthermore, stress-relaxation experiments revealed sufficient material flow at 150 ◦C, which could be significantly slowed down below 100 ◦C. Optical microscopy was used to demonstrate the healing ability of the vitrimer coatings, resulting in the restoration of barrier properties after scratching. The dynamic properties of the epoxy resin were used to recoat an aluminium plate as a proof of concept, demonstrating that the thin layer could be adhered to a surface again in its cured state. As a result, the service life of epoxy coatings and protected metals could be extended while maintaining excellent mechanical properties, opening the door to a wide range of potential applications such as marine coatings and concrete bonding. In a second part of the presentation, I will highlight another generation of epoxy adhesives with reversible hardeners2. On-demand adhesive dismantling has the potential to improve multimaterial product recycling, but its implementation has been hampered by a critical trade-off between strong bonding and easy debonding. As a result, the temperature range in which these temporary adhesives can be used is relatively limited. Here, a new class of dynamic epoxy resins is discussed that significantly extends this upper temperature limit and still achieves fast debonding. Specifically, two types of dynamic polyamidoamine curing agents for epoxy hardening have been developed, being polysuccinamides (PSA) and polyglutaramides (PGA). The versatility of the PSA and PGA dynamic adhesive curing system is demonstrated in classical bulk adhesive formulations, as well as in dynamic covalent linking to a PSA- or PGA-functionalized surface. As a result, an attractive drop-in strategy is achieved for producing debondable and rebondable epoxy adhesives, with high complementarity to existing adhesive resin technologies and applicable in an industrially relevant temperature window.
16:10 hrs. – Rethinking Polymers and Composites in the Context of Sustainability – Prof. Baris Kumru (Delft University)
Polymers and polymer composites influence many sectors ranging from transportation to electronics. However, plastics are currently affiliated to environmental pollution and academics as well as industry is under a push towards transition to sustainability. However, interdisciplinary approach is required to tailor new generation materials, especially in the case of polymer composites. In this talk, I will demonstrate a strategic approach to green chemistry in lab scale and their possible translation into industrial applications.
|Non-member ATIPIC/AFTPVA/NVVT/BPG:||90,00 EUR (VAT included)|
REGISTRATION & CANCELLING
Registrations are to be made at the latest on October 3rd 2023 and exclusively with this link:
The payment has to be made by transfer on the ATIPIC banking account number
BE22 2710 6182 9347 before October 3rd 2023 or by cash or mobile at the
entrance of the conference room.
Please mention your first name and last name as communication on your bank transfer.
To cancel your registration please contact by mail email@example.com at the latest by October 7th, 2023
Any canceling after this date will induce the sending of an invoice for the mentioned amount on the fill-in registration form.