Gelation, Vitrification and Shrinkage of Thermoset Polymers - Methods for Investigation and Modelling

Paul Ludwig Geiß; Melanie Schumann

doi:10.4028/p-l4cuqQ

Paper Titles

Gelation, Vitrification and Shrinkage of Thermoset Polymers - Methods for Investigation and Modelling
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Microstructural and Morphological Evolution of Novel In Situ Al-15%Mg₂Si-4.5%Si Composite with Strontium Addition
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Fabrication and Thermomechanical Processing of Titanium-Based Laminates for Enhanced Performance under High Dynamic Impact
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Phase Field Model of Modification of Microstructure of Al-15Mg₂Si- 4.5Si Composite by Addition of Sr during Semi-Solid Processing
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Effect of Oxygen on Phase Evolution in Al-Y₂O₃ Nanocomposites by Mechanical Alloying
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Microstructures and Properties of Diffusion Layer Formed at Laminated Interface of Alumina-Particle Dispersed Magnesium Laminated Compacts Fabricated by MM/SPS Method
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Mechanical and Thermal Properties of Harmonic Structure Composites with Ti-Ni Alloy and Copper
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Structure of Ta₂O₅containing Phosphate Invert Glasses Prepared by Liquid Phase Method
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HomeMaterials Science ForumMaterials Science Forum Vol. 1176Gelation, Vitrification and Shrinkage of Thermoset...

Gelation, Vitrification and Shrinkage of Thermoset Polymers - Methods for Investigation and Modelling

Abstract:

Thermosets play an important role in composite processing, adhesive bonding and coating. In all these applications, shrinkage my cause a significant amount of residual stress, leading to distortion, reduced load carrying capacity and cracking. The chemical curing reaction is accompanied by a reduction in volume called “chemical shrinkage”. If curing is performed at elevated temperature, cooling to ambient conditions afterwards is accompanied by “thermal shrinkage” and further shrinkage due to so-called “physical ageing”. A skillful combination of available methods makes it possible to separate chemical shrinkage in the viscous state from shrinkage in the gelled and vitrified state. Modeling of the time-and temperature-dependent properties is the prerequisite for the prediction and control of residual stresses caused by shrinkage in thermoset polymers.

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Periodical:

Materials Science Forum (Volume 1176)

Pages:

1-6

DOI:

https://doi.org/10.4028/p-l4cuqQ

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Online since:

January 2026

Authors:

Paul Ludwig Geiß*, Melanie Schumann

Keywords:

Adhesive, Gelation, Shrinkage, Thermoset, Vitrification

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References

[1] M. Schumann, P.L. Geiß, Kinetic studies of chemical shrinkage and residual stress formation in thermoset epoxy adhesives under confined curing conditions, AIP Conf. Proc. 1664 (2015) 170006-1 – 170006-5

DOI: 10.1063/1.4918524

Google Scholar

[2] D.U. Shah, P.J. Schubel, Evaluation of cure shrinkage measurement techniques for thermosetting resins, Polymer Testing 29 (2010) 629-639. https://doi.org/

DOI: 10.1016/j.polymertesting.2010.05.001

Google Scholar

[3] O.G. Kravchenko, C. Li, A. Strachan, S.G. Kravchenko, R.B. Pipes, Prediction of the chemical and thermal shrinkage in a thermoset polymer, Composites: Part A 66 (2014) 35-43

DOI: 10.1016/j.compositesa.2014.07.002

Google Scholar

[4] J. Lange, S. Toll, J.-A.E. Månson, A. Hult, Residual stress build-up in thermoset films cured below their ultimate glass transition temperature, Polymer 38 (1997) 809-815

DOI: 10.1016/S0032-3861(96)00584-8

Google Scholar

[5] Y. Nawab, S. Shahid, N. Boyard, F. Jacquemin, Chemical shrinkage characterization techniques for thermoset resins and associated composites, J. Mater. Sci. 48 (2013) 5387–5409

DOI: 10.1007/s10853-013-7333-6

Google Scholar

[6] R.K. Krishnaswamy, J. Janzen, Exploiting refractometry to estimate the density of polyethylene: The Lorentz–Lorenz approach re-visited, Polymer Testing 24 (2005), 762-765

DOI: 10.1016/j.polymertesting.2005.03.010

Google Scholar

[7] L.C. Rubens, R.E. Skochdopole, Continuous measurement of polymerization rates over the entire conversion range with a recording dilatometer, J. Appl. Polym. Sci. 9 (1965) 1487–1497

DOI: 10.1002/app.1965.070090423

Google Scholar

[8] J. López, C. Ramírez, A. Torres, M.J. Abad, L. Barral, J. Cano, F.J. Díez, Isothermal curing by dynamic mechanical analysis of three epoxy resin systems: Gelation and vitrification, J. Appl. Polym. Sci. 83 (2002) 78-85

DOI: 10.1002/app.10023

Google Scholar