Soft PVC foams: Study of the gelation, fusion, and foaming
Phthalates are the most used plasticizers in flexible PVC foam formation. In this study, we have studied the influence of the phthalate ester-type plasticizers on the foaming process and the quality of the foams obtained from the corresponding plastisols.
Soft PVC foams: Study of the gelation, fusion and foaming
A series of plastisols prepared by mixing a high and a low compatible phthalate ester plasticizer in several proportions (100/0, 75/25, 50/50, 25/75, 0/100 ratios) has been studied and characterized (by means of rheology, calorimetry, thermal stability, thermomechanical properties, density, and foam morphology), to study the influence of the
Dr. Agnes Zoller - Google Scholar
Dr. Agnes Zoller. Soft PVC foams: Study of the gelation, fusion, and foaming processes. I. Phthalate ester plasticizers. Soft PVC foams: Study of the gelation, fusion, and foaming processes. II. Adipate, citrate and other types of plasticizers. Plastisol foaming process. Decomposition of the foaming agent, polymer behavior in the corresponding
Soft PVC Foams: Study of the Gelation, Fusion, and Foaming
Phthalates are the most used plasticizers in flexible PVC foam formation. In this study, we have studied the influence of the phthalate ester-type plasticizers on the foaming...
Soft PVC Foams: Study of the Gelation, Fusion, and Foaming
PVC plastisols are used in the production of flexible PVC foams. Phthalates are the most used plasticizers for PVC, and in a previous article (part I of this series), we discussed the influence...
- Who cited Plastisol gelation and fusion rheological aspects?
- Plastisol Gelation and Fusion Rheological Aspects Jacques Verdu, Agnes Zoller, Antonio Marcilla To cite this version: Jacques Verdu, Agnes Zoller, Antonio Marcilla. Plastisol Gelation and Fusion Rheological Aspects. Journal of Applied Polymer Science, 2013, 129, pp.2840-2847. 10.1002/app.39005. hal-01059306 Science Arts & Métiers (SAM)
- How does a plasticizer invade PVC particles?
- according to which the plasticizer invades progressively PVC particles with an abrupt diffusion front separating the fully plas- ticized superficial layer and the unplasticized core. This front moves progressively toward the particle center.
- Does swelling cause modulus increase in plasticizer diffusion into PVC?
- but these phenomena, which affect the plasticizer diffusion into PVC, occur in shorter times than modulus rise ones. These arguments led to abandon the hypothesis of swelling as the main cause of modulus increase.
- How long does it take for PVC epoxy ester to elongate?
- In their study of the PVC-epoxy- ester systems, Fenollar et al.9determined the curing time to achieve the maximum sample ductility (ultimate elongation of the order of 250% at ambient temperature), it was about 16 min at 180 C, 12 min at 200 C, and 5 min at 220 C.
- How does molar mass affect the viscosity of a plasticizer?
- The higher the molar mass, stiffness, and/or degree of branching of the plasticizer molecule, the slower the chain diffusion and the viscosity increase, and the longer the time to sample homogenization. As a result, the temperature at the maximum viscosity increases with the three above-cited plasticizer characteristics.
- How many samples based on a PVC-VAC copolymer with 100 PHR plasticizer?
- Nineteen samples based on a PVC-VAC (vinyl acetate 95/5) copolymer with 100 phr plas- ticizer have been studied, differing only by the plasticizer structure. The sample shear modulus increases continuously with temperature until a maximum, long time after the end of the dissolution process as characterized by DSC.
