EPDM has excellent heat resistance, aging resistance, corrosion resistance and insulation performance, and is widely used in wire and cable, automobile, home appliances and other fields, but EPDM is extremely flammable, and is restricted in some applications. In this paper, the feasibility of the application of 9,10-dihydro-9-oxa-10-phospha-phenanthrene oxide (DOPO) in EPDM rubber is discussed.
DOPO is a new type of phosphonolactone flame retardant, which has good flame retardant effect in epoxy resin, but it is not suitable for rubber flame retardant because of the active hydrogen atoms in the molecular structure of DOPO, which has serious inhibitory effect on rubber vulcanization.
In this paper, DOPO was reacted with KH-560 by chemical reaction to change the active hydrogen in the molecular structure of DOPO into ester structure to obtain a new type of flame retardant DK, which was used for the flame retardant of EPDM, and it was found that the flame retardant EPDM could not be vulcanized by conventional vulcanization method.
To solve this problem, this paper adopts metal oxide as the activator of peroxide vulcanizing agent, and finds that...
https://meixi-mgo.com/study-of-magnesium-oxide-flame-retardant-epdm-rubber/
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