Study of the rheology and foaming processes of poly(vinyl chloride) plastisols with different foaming agents
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Yubi Ji
Abstract
Poly(vinyl chloride) (PVC) plastisols are widely used in the production of flexible PVC foams. In this study, we investigated the evolution of the complex viscosity of PVC plastisol by dynamic oscillatory tests, the storage modulus of the PVC compound by dynamic mechanical analysis, and the thermal behavior including the decomposition of three chemical blowing agents (CBAs), namely, azodicarbonamide, 4,4′-oxybis(benzenesulfonyl hydrazide), and sodium bicarbonate, by differential scanning calorimetry. Furthermore, the morphology and quality of the foams obtained from the corresponding plastisols were characterized by scanning electron microscopy. The results indicated that the onset decomposition temperature T2(5%) of a CBA in plastisol is the most critical indicator of the foam quality. The temperature difference corresponding to [T2(5%) – Tηmax] was also proved to be another important parameter. When T2(5%) is within the optimum temperature range of a PVC plastisol, the bigger the [T2(5%) – Tηmax] difference, the better the quality of the foams.
Acknowledgements
The authors greatly acknowledge financial support from the Hundred Talents Project of Guizhou Province (no. 2016-5673) and the Excellent Young Talents Project of Guizhou Province (no. 2015-29).
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©2019 Walter de Gruyter GmbH, Berlin/Boston
Articles in the same Issue
- Frontmatter
- Material properties
- Thermo-oxidative and thermal degradation kinetics of silica/polymethyl methacrylate composites with electrostatic interaction phase interfaces
- Study of the rheology and foaming processes of poly(vinyl chloride) plastisols with different foaming agents
- The non-isothermal crystallization behavior of polyamide 6 and polyamide 6/HDPE/MAH/L-101 composites
- Preparation and assembly
- Preparation and properties of biodegradable polymer/nano-hydroxyapatite bioceramic scaffold for spongy bone regeneration
- Properties of EPDM/PP thermoplastic vulcanizates produced by an intermeshing-type internal mixer comparing with a co-rotating twin-screw extruder
- Applications and characterization of silicalite-1/polydimethylsiloxane composite membranes for the pervaporation of a model solution and fermentation broth
- Electroless plate of polyaniline-silver composite layer on polyester fibers
- Surface modification of polymeric flat sheet membranes by adding oligomeric fluoroalcohol
- Engineering and processing
- Processing polymer nanocomposites with natural additives for medical applications
- Dissolution improvement of an active pharmaceutical ingredient in a polymer melt by hot melt extrusion
- Determination of the fundamental dimension development in building direction for laser-sintered parts
Articles in the same Issue
- Frontmatter
- Material properties
- Thermo-oxidative and thermal degradation kinetics of silica/polymethyl methacrylate composites with electrostatic interaction phase interfaces
- Study of the rheology and foaming processes of poly(vinyl chloride) plastisols with different foaming agents
- The non-isothermal crystallization behavior of polyamide 6 and polyamide 6/HDPE/MAH/L-101 composites
- Preparation and assembly
- Preparation and properties of biodegradable polymer/nano-hydroxyapatite bioceramic scaffold for spongy bone regeneration
- Properties of EPDM/PP thermoplastic vulcanizates produced by an intermeshing-type internal mixer comparing with a co-rotating twin-screw extruder
- Applications and characterization of silicalite-1/polydimethylsiloxane composite membranes for the pervaporation of a model solution and fermentation broth
- Electroless plate of polyaniline-silver composite layer on polyester fibers
- Surface modification of polymeric flat sheet membranes by adding oligomeric fluoroalcohol
- Engineering and processing
- Processing polymer nanocomposites with natural additives for medical applications
- Dissolution improvement of an active pharmaceutical ingredient in a polymer melt by hot melt extrusion
- Determination of the fundamental dimension development in building direction for laser-sintered parts
