وزارة التعليم العالي و البحث العلمي
Research centre in Industrial Technologies -CRTI-
EChahid Mohammed ABASSI
Division Fabrication Additive Non-métallique
Photosensitive Polymers
- Leila LAMIRI Senior Researcher A Team leader
- Ouafia BELGHERBI Senior Researcher A
- Assia Tounsi Senior Researcher B
- Safia MERABET Senior Researcher B
- Mohamed Hamidouche Senior Researcher B
- Sofiane LASMI Senior Researcher B
- Delloula LAKHDARI Senior Researcher B
- Atef CHIBANI Senior Researcher B
- Boussaha BOUCHOUL Senior Researcher B
- Katib HAMLAOUI Research fellow
Development of photosensitive polymer materials for 3D printing by SLA Stereolithography [2022-2024]
Additive manufacturing or 3D printing is a process of making three-dimensional solid objects from a digital file with complex shapes and unique properties. The 3D printed object is created by overlapping layers of materials. Each of these layers can be thought of as a thin horizontal cross-section of the temporary object. The materials most used in the field of additive manufacturing are grouped into three main families: ceramics, metals and polymers, as there are several printing techniques, the best-known are: Fused Deposition Modeling (FDM), Stereolithography SLA and Selective Laser Sintering (SLS). Among the different techniques for 3D printing polymeric materials is Stereolithography (SLA), the process is based on photo curing in which ultraviolet (UV) light is deployed to form chains between molecules of photo-curable liquid resin, cross-linking them and, consequently, solidifying the resin. The research activity of this project is mainly based on the elaboration and development of resins based on photosensitive polymer materials, such as Polyurethane acrylate (PUA) and biosourced oligomers (vegetable oils) used for Stereolithography SLA, materials development methods will be optimized by studying the effect of formulation ingredients and synthesis parameters on the final properties. The materials developed thus improved by the incorporation of additives such as electro-active polymers (poly bithiophene, poly pyrrole, etc.) which have the advantage of stability, variable electrical conductivity, the low cost of the raw material, the good compatibility with other polymers and other types of additives such as inorganic fillers of different sizes, which improves thermal, mechanical, electrical properties, etc. of objects printed with these types of resins and which can be used for prototypes and automotive, aeronautical and biomedical components.
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