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Titolo:
Synthesis of novel flame retardant epoxy hardeners and properties of curedproducts
Autore:
Shieh, JY; Wang, CS;
Indirizzi:
Natl Cheng Kung Univ, Dept Chem Engn, Tainan 701, Taiwan Natl Cheng Kung Univ Tainan Taiwan 701 ept Chem Engn, Tainan 701, Taiwan Chun Haw Coll Med Technol, Dept Ind Safety & Hyg, Tainan, Taiwan Chun Haw Coll Med Technol Tainan Taiwan nd Safety & Hyg, Tainan, Taiwan
Titolo Testata:
POLYMER
fascicolo: 18, volume: 42, anno: 2001,
pagine: 7617 - 7625
SICI:
0032-3861(200108)42:18<7617:SONFRE>2.0.ZU;2-9
Fonte:
ISI
Lingua:
ENG
Soggetto:
PHOSPHORUS-CONTAINING POLYMERS; RESINS; OXIDE;
Keywords:
2-(6-oxido-6H-dibenz < c,e >< 1,2 > oxaphosphorin-6-yl)methanol; melamine; flame retardancy;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
25
Recensione:
Indirizzi per estratti:
Indirizzo: Wang, CS Natl Cheng Kung Univ, Dept Chem Engn, Tainan 701, Taiwan Natl Cheng Kung Univ Tainan Taiwan 701 Engn, Tainan 701, Taiwan
Citazione:
J.Y. Shieh e C.S. Wang, "Synthesis of novel flame retardant epoxy hardeners and properties of curedproducts", POLYMER, 42(18), 2001, pp. 7617-7625

Abstract

Novel flame-retardant curing agents for epoxy resins, [ODOPM-PN] and [ODOPM-MPN], were prepared from phenol formaldehyde novolac (PN), melamine-phenol formaldehyde novolac (MPN) and a reactive 2-(6-oxid-6H-dibenz <c,e > <1,2> oxaphosphorin-6-yl) -methanol (ODOPM) while ODOPM was synthesized through the reaction between 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) and formaldehyde. The compounds (ODOPM-PN and ODOPM-MPN) were used asflame-retardant hardener for o-cresol formaldehyde novolac epoxy (CNE) resin in electronic application. The thermal stability and flame retardancy were determined by thermal gravimetric analysis and UL 94 vertical test. The glass transition temperatures were measured by dynamic mechanical analysis. The phosphorus-nitrogen synergistic effect on flame retardancy combined with the rigid structure of ODOPM have resulted in better flame retardancy, higher glass transition temperature and thermal stability for the phosphorus-nitrogen containing epoxy resin system than the regular phosphorus-containing flame retardant epoxy resin system. UL 94-VO rating could be achieved with a lower phosphorus content of as low as 0.81% with 2.36% nitrogen for the ODOPM-MPN cured epoxy resin system and no fume and toxic gas emission were observed. (C) 2001 Elsevier Science Ltd. Ail rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 14/11/18 alle ore 04:14:44