Reyes Pablo, Edeleva Mariya, D'hooge Dagmar R, Cardon Ludwig, Cornillie Pieter
Laboratory of Veterinary Morphology, Faculty of Veterinary Sciences, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium.
Centre for Polymer and Material Technologies (CPMT), Department of Materials, Textiles and Chemical Engineering, Ghent University, Technologiepark 130, 9052 Zwijnaarde, Belgium.
Polymers (Basel). 2023 Jul 29;15(15):3236. doi: 10.3390/polym15153236.
Corrosion casting based on the curing of acrylic resins enables one to create casts as replicas of body systems, enhancing our knowledge of veterinary medicine. The identification of the optimal chemical formulations as well as the processing conditions, the delivery of good control during the liquid state and the excellent macroscopic properties during solidification and after use are remaining challenges. In the present work, based on the identification of more qualitative trends, it is demonstrated that multicomponent comonomer mixtures are interesting materials that can be used to expand the range of mechanical properties and can specifically result in a better balance between stiffness and flexibility while guaranteeing dimensional stability. Emphasis is put on a large pool of formulations in the testing phase to then perform a detailed mechanical flexural analysis for the most promising cases during a more rigorous testing phase, accounting for a new pragmatic protocol for the pot life. This protocol consists of a vial-based turning test and a measurement of the viscosity variation up to 1000 mPa∙s and highlights the complex interplay between the overall initial concentrations and the impact of the absence of mixing once the system is at rest. It is demonstrated that the use of only low-molar-mass crosslinkers should be avoided, and overall, an intermediate amount of crosslinkers is recommendable.
基于丙烯酸树脂固化的腐蚀铸型技术能够制作出作为身体系统复制品的铸型，增进我们对兽医学的了解。确定最佳化学配方以及加工条件、在液态时实现良好控制以及在固化过程中和使用后具备优异的宏观性能，仍然是有待解决的挑战。在本研究中，基于对更多定性趋势的识别，证明多组分共聚单体混合物是有趣的材料，可用于扩展机械性能范围，并且在保证尺寸稳定性的同时，能够特别实现刚度和柔韧性之间更好的平衡。在测试阶段着重研究大量配方，然后在更严格的测试阶段对最有前景的案例进行详细的机械弯曲分析，同时考虑到一种针对适用期的新实用方案。该方案包括基于小瓶的旋转测试以及对高达1000 mPa∙s的粘度变化的测量，并突出了总体初始浓度与系统静止后不混合的影响之间的复杂相互作用。结果表明应避免仅使用低摩尔质量的交联剂，总体而言，推荐使用中等量的交联剂。
