Novel halogen-free flame retardant thermoset from a hybrid hexakis (methoxymethyl) melamine/phosphorus-containing epoxy resin cured with phenol formaldehyde novolac
This paper describes the curing behaviours, thermal properties and flame-resistance of a novel halogen-free epoxy hybrid thermoset, prepared by the curing reaction of hexakis (methoxymethyl) melamine (HMMM), a phosphorouscontaining epoxy resin (EPN-D) with 9, 10-dihydro-9-oxa-10-phosphaphenanthrene...
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| Format: | Article |
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| Language: | English |
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Budapest University of Technology and Economics
2009-12-01
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| Series: | eXPRESS Polymer Letters |
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| Online Access: | http://www.expresspolymlett.com/letolt.php?file=EPL-0001169&mi=cd |
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| description | This paper describes the curing behaviours, thermal properties and flame-resistance of a novel halogen-free epoxy hybrid thermoset, prepared by the curing reaction of hexakis (methoxymethyl) melamine (HMMM), a phosphorouscontaining epoxy resin (EPN-D) with 9, 10-dihydro-9-oxa-10-phosphaphenanthrene 10-oxide (DOPO) group and phenol formaldehyde novolac (n-PF). The resultant thermosets showed high glass-transition temperatures (Tg, 123–147°C) as determined by thermal mechanical analysis (TMA), excellent thermal stability with high 5 wt% decomposition temperatures (Td,5% ≥308°C) and high char yields (Yc ≥39.4 wt%) from the thermogravimetric analysis (TGA). All the cured EPND/ HMMM/n-PF hybrid resins achieved the UL 94 V-0 grade with high limited oxygen indices (LOI > 45.7). It is found that phosphorous and nitrogen elements in the cured EPN-D/HMMM/n-PF hybrid resins had a positive synergistic effect on the improvement of the flame retardancy. |
| format | Article |
| id | doaj-art-9f32e99b12644490996ebbf5cb5fa3d9 |
| institution | Kabale University |
| issn | 1788-618X |
| language | English |
| publishDate | 2009-12-01 |
| publisher | Budapest University of Technology and Economics |
| record_format | Article |
| series | eXPRESS Polymer Letters |
| spelling | doaj-art-9f32e99b12644490996ebbf5cb5fa3d92025-08-20T03:57:03ZengBudapest University of Technology and EconomicseXPRESS Polymer Letters1788-618X2009-12-0131278879610.3144/expresspolymlett.2009.97Novel halogen-free flame retardant thermoset from a hybrid hexakis (methoxymethyl) melamine/phosphorus-containing epoxy resin cured with phenol formaldehyde novolacThis paper describes the curing behaviours, thermal properties and flame-resistance of a novel halogen-free epoxy hybrid thermoset, prepared by the curing reaction of hexakis (methoxymethyl) melamine (HMMM), a phosphorouscontaining epoxy resin (EPN-D) with 9, 10-dihydro-9-oxa-10-phosphaphenanthrene 10-oxide (DOPO) group and phenol formaldehyde novolac (n-PF). The resultant thermosets showed high glass-transition temperatures (Tg, 123–147°C) as determined by thermal mechanical analysis (TMA), excellent thermal stability with high 5 wt% decomposition temperatures (Td,5% ≥308°C) and high char yields (Yc ≥39.4 wt%) from the thermogravimetric analysis (TGA). All the cured EPND/ HMMM/n-PF hybrid resins achieved the UL 94 V-0 grade with high limited oxygen indices (LOI > 45.7). It is found that phosphorous and nitrogen elements in the cured EPN-D/HMMM/n-PF hybrid resins had a positive synergistic effect on the improvement of the flame retardancy.http://www.expresspolymlett.com/letolt.php?file=EPL-0001169&mi=cdThermosetting resinsThermal propertiesFlame-retardancyepoxy |
| spellingShingle | Novel halogen-free flame retardant thermoset from a hybrid hexakis (methoxymethyl) melamine/phosphorus-containing epoxy resin cured with phenol formaldehyde novolac eXPRESS Polymer Letters Thermosetting resins Thermal properties Flame-retardancy epoxy |
| title | Novel halogen-free flame retardant thermoset from a hybrid hexakis (methoxymethyl) melamine/phosphorus-containing epoxy resin cured with phenol formaldehyde novolac |
| title_full | Novel halogen-free flame retardant thermoset from a hybrid hexakis (methoxymethyl) melamine/phosphorus-containing epoxy resin cured with phenol formaldehyde novolac |
| title_fullStr | Novel halogen-free flame retardant thermoset from a hybrid hexakis (methoxymethyl) melamine/phosphorus-containing epoxy resin cured with phenol formaldehyde novolac |
| title_full_unstemmed | Novel halogen-free flame retardant thermoset from a hybrid hexakis (methoxymethyl) melamine/phosphorus-containing epoxy resin cured with phenol formaldehyde novolac |
| title_short | Novel halogen-free flame retardant thermoset from a hybrid hexakis (methoxymethyl) melamine/phosphorus-containing epoxy resin cured with phenol formaldehyde novolac |
| title_sort | novel halogen free flame retardant thermoset from a hybrid hexakis methoxymethyl melamine phosphorus containing epoxy resin cured with phenol formaldehyde novolac |
| topic | Thermosetting resins Thermal properties Flame-retardancy epoxy |
| url | http://www.expresspolymlett.com/letolt.php?file=EPL-0001169&mi=cd |