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A flame retardant, tri-(3-DOPO-2-hydroxypropan-1-yl)-1, 3, 5-triazine-2, 4, 6-trione (TGIC-DOPO) containing both phosphaphenanthrene and triazine-trione groups, is introduced into diglycidyl ether of bisphenol-A (EP) thermosets respectively cured by 4,4′-diamino-diphenyl methane (DDM), 4,4′-diamino-diphenyl sulfone (DDS), and m-phenylenediamine (m-PDA). TGIC-DOPO exhibits excellent flame-retardant...
The flame-retardant rigid polyurethane (PU) foams with hexa-phenoxy-cyclotriphosphazene/expandable graphite (HPCP/EG) were prepared through box-foaming in our laboratory. The flame retardancy of PU foams was characterized using the limiting oxygen index and cone calorimeter. The results show that the incorporation of HPCP into the PU foams containing EG enhanced flame retardancy. The main degradation...
The flame retardant epoxy resin has been prepared by mixing the flame retardant additive hexa-(phosphaphenanthrene-hydroxyl-methyl-phenoxyl)-cyclotriphosphazene (HAP-DOPO) into diglycidyl ether of bisphenol-A (DGEBA). After cured by 4,4′-Diamino-diphenyl sulfone (DDS), the flame retardant properties of thermosets were characterized by the limited oxygen index (LOI), UL-94 test and cone calorimeter...
A series of thermotropic main-chain liquid crystalline copolyesters P1–P5 containing 2-(6-oxide-6H-dibenz〈c,e〉〈1,2〉oxaphosphorin-6-yl)-1,4-dihydroxyphenylene (ODOPB) as non-mesogenic unit and 4,4′-dihydroxybiphenyl (DB) as mesogenic unit were prepared by polycondensation with sebacoyl chloride. The thermal and mesogenic properties were characterized by differential scanning calorimetry (DSC), polarizing...
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