Preparation and properties of bisphenol A epoxy resin microcapsules coated with melamine–formaldehyde resin
| Autor: | Fan Yu, Si-qian Hu, Hai-ping Wang, Shao-jun Cai |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Thermogravimetric analysis
Bisphenol A Diglycidyl ether Materials science Polymers and Plastics General Chemistry Epoxy Condensed Matter Physics Diluent chemistry.chemical_compound chemistry Chemical engineering visual_art Materials Chemistry visual_art.visual_art_medium Adhesive Fourier transform infrared spectroscopy In situ polymerization Composite material |
| Zdroj: | Polymer Bulletin. 71:2407-2419 |
| ISSN: | 1436-2449 0170-0839 |
| DOI: | 10.1007/s00289-014-1198-y |
| Popis: | Microcapsules containing epoxy resins have potential applications, such as in adhesive, electronic packaging, and self-healing polymeric composites. A series of microcapsules were prepared by in situ polymerization with poly(melamine–formaldehyde) as the shell materials and a mixture of diglycidyl ether of bisphenol A and epoxy diluent as the core substances. Morphology, chemical structure, mean particle size, and thermal properties of the microcapsules were studied by means of optical microscope, Fourier transform infrared spectroscopy, laser particle size analyzer, and microcomputer differential thermal balance, respectively. Effects of kind of epoxy diluent, surfactant type, emulsifier concentration, and emulsifying rate on the physical properties of microcapsules were investigated. Results indicate that the formation of microcapsules is affected by the epoxy diluent type and surfactant type. The highest core content of the resultant microcapsules is about 88 wt% and average diameters of the capsules range from 67 to 201 μm, which can be adjusted by changing the emulsifier concentration and emulsifying rate. Thermo gravimetric analysis indicated that the prepared microcapsules experienced excellent stability up to 235 °C. |
| Databáze: | OpenAIRE |
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