Influence of addition of silica particles on reaction-induced phase separation and properties of epoxy/PEI blends
Source abstract
Abstract
Polyether imides (PEI)/silica nanocomposites, prepared by sol–gel process, were used to modify the epoxy resin (ER), and the effect of silica particles on reaction-induced phase separation and mechanical properties of these systems were investigated. SEM images of the fracture surface of ER/PEI/silica composites showed an interesting morphology transformation with the increase of silica particle content. SEM–EDX results indicated that silica particles once formed in the PEI gradually migrated and concentrated in epoxy-rich region during the phase separation because of the better affinity between silica particles and epoxy resin. FTIR measurement and rheological test confirmed that the silica particles make the polymerization reaction of epoxy faster and the dynamic DSC results demonstrated that the activation energy of these systems decreased with the increase of the silica particles. Mechanical measurements approved that the introducing of PEI/silica nanocomposites into the epoxy could lead to great improvement of the impact strength and storage module.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Epoxy Resin Curing Processes · Polymer Nanocomposites and Properties · Polymer composites and self-healing
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (39)
Show source-provided references
1. Ellis B, editor. Chemistry and technology of epoxy resins. Blackie Academic & Professional; 1993.10.1007/978-94-011-2932-9 ↗
2. Oligomeric and polymeric modifiers for toughening of epoxy resins10.1016/0014-3057(95)00091-7 ↗
3. Cure kinetics and mechanical properties of the blend system of epoxy/diaminodiphenyl sulfone and amine terminated polyetherimide-carboxyl terminated poly(butadiene-co-acrylonitrile) block copolymer10.1007/BF02705795 ↗
4. Influence of nanosilica particles on the cure and physical properties of an epoxy thermoset resin10.1002/pi.2714 ↗
5. Effect of clay surface modification and concentration on the tensile performance of clay/epoxy nanocomposites10.1016/j.msea.2006.10.052 ↗
6. Toughening of aromatic diamine-cured epoxy resins by modification with n-phenylmaleimide-styrene-p-hydroxystryrene terpolymers10.1016/0014-3057(95)00019-4 ↗
7. Modification of an epoxy resin with a fluoroepoxy oligomer for improved mechanical and tribological properties10.1016/j.msea.2008.12.008 ↗
8. Thermoplastic toughening of epoxy resins: a critical review10.1002/(SICI)1099-1581(199801)9:1<3::AID-PAT727>3.0.CO;2-I ↗
9. Morphology development via reaction-induced phase separation in epoxy/poly(ether sulfone) blends: morphology control using poly(ether sulfone) with functional end-groups10.1016/0032-3861(95)90673-P ↗
10. Polymerization-induced viscoelastic phase separation in polyethersulfone-modified epoxy systems10.1021/jp036628o ↗
11. Rheological behaviors and structural transitions in a polyethersulfone-modified epoxy system during phase separation10.1007/s00396-007-1758-x ↗
12. Polyetherimide-modified epoxy networks: influence of cure conditions on morphology and mechanical properties10.1002/(SICI)1097-4628(19970919)65:12<2433::AID-APP15>3.0.CO;2-1 ↗
13. Viscoelastic effects on the phase separation in thermoplastics-modified epoxy resin10.1021/ma034649a ↗
14. Effects of the molecular weight of poly(ether imide) on the viscoelastic phase separation of poly(ether imide)/epoxy blends10.1002/app.30897 ↗
15. Epoxy-diamine thermoset/thermoplastic blends. 2. Rheological behavior before and after phase separation10.1021/ma981755h ↗
16. Phase separation and rheological behavior in thermoplastic modified epoxy systems10.1007/s00396-006-1504-9 ↗
17. Phase structure control of epoxy/polysulfone blends: effects of molecular weight of epoxy resins10.1016/S0261-3069(00)00027-3 ↗
18. Effect of cure accelerator on phase morphology in epoxy/polysulfone blends
19. Phase morphology control of polysulfone modified epoxy resin
20. Phase structure control of epoxy polysulfone blends by molecular weight of epoxy resins
21. Studies on phase morphology control of epoxy/PSF blends
22. A dielectric mechanical rheological and electron microscopy study of cure and properties of a thermoplastic modified epoxy resin10.1021/ma00039a029 ↗
23. Cure-induced phase separation of epoxy/DDS/PEK-C composites and its temperature dependency10.1002/app.28202 ↗
24. Spontaneous three-layer formation in the curing of polyimide/epoxy blends10.1002/marc.200700568 ↗
25. Layered structure formation in the reaction-induced phase separation of epoxy/polyimide blends10.1021/ma801213n ↗
26. Reaction-induced phase separation in epoxy/polysulfone/poly(ether imide) systems. II. generated morphologies10.1002/polb.20193 ↗
27. Reaction-induced phase separation in epoxy/polysulfone/poly(ether imide) systems. I. Phase diagrams10.1002/polb.20192 ↗
28. The sol–gel process10.1021/cr00099a003 ↗
29. Hybrid sol–gel-derived polymers: applications of multifunctional materials10.1021/cm011060m ↗
30. Epoxy–silica nanocomposites: preparation, experimental characterization, and modeling10.1002/app.21854 ↗
31. Epoxy–silica particulate nanocomposites: chemical interactions, reinforcement and fracture toughness10.1016/j.polymer.2005.08.028 ↗
32. A toughened epoxy resin by silica nanoparticle reinforcement10.1002/app.22805 ↗
33. Toughening mechanisms of nanoparticle-modified epoxy polymers10.1016/j.polymer.2006.11.038 ↗
34. Organically modified layered-silicates facilitate the formation of interconnected structure in the reaction-induced phase separation of epoxy/thermoplastic hybrid nanocomposite10.1016/j.polymer.2005.06.013 ↗
35. Synthesis and characterization of bismaleimide–polyetherimide–silica hybrid by sol–gel process10.1002/pat.575 ↗
36. Nano-AlN functionalization by silane modification for the preparation of covalent-integrated epoxy/poly(ether imide) nanocomposites10.1002/app.29962 ↗
37. Zhang J, Shi WC, Xie XM. Preparation of PEI/SiO2 nanocomposite via sol–gel process. In: Polymer symposium of China. China, Chengdu; 2007.
38. Reaction kinetics in differential thermal analysis10.1021/ac60131a045 ↗
39. Epoxy resin toughened by thermoplastics