Environment-friendly type edge-easily-torn EPDM gasket rubber compound with high flame retardancy and preparation method thereof

The invention discloses an environment-friendly type edge-easily-torn EPDM gasket rubber compound with high flame retardancy. The EPDM gasket rubber compound comprises, by weight, 100 parts of EPDM rubber, 5-15 parts of zinc oxide, 1-2 parts of eleaostearic acid, 5-15 parts of high abrasion furnace...

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Bibliographische Detailangaben
Hauptverfasser: LI ZHONGHAI, SHEN JIZHOU
Format: Patent
Sprache:eng
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Zusammenfassung:The invention discloses an environment-friendly type edge-easily-torn EPDM gasket rubber compound with high flame retardancy. The EPDM gasket rubber compound comprises, by weight, 100 parts of EPDM rubber, 5-15 parts of zinc oxide, 1-2 parts of eleaostearic acid, 5-15 parts of high abrasion furnace black, 15-40 parts of nano-kaolin, 1-3 parts of an internal lubricant, 80-120 parts of aluminium hydroxide, 30-60 parts of a fire retardant EPZ, 10-20 parts of zinc borate, 7-20 parts of antimonony oxide, 0.5-2 parts of Si69, 10-20 parts of paraffin oil, 0.8-2 parts of sulphur and 2.5-4 parts of a promoter EP33-75. Mooney viscosity of the EPDM rubber is 60-70; ethylene content is 45-55%; and content of third monomer ENB is not less than 5.5%. A preparation method comprises the following steps: the above ingredients except sulphur and the promoter EP33-75 undergo mixing in an internal mixer at 100 DEG C and a substance obtained after mixing is discharged; then, the discharged mixture, sulphur and the promoter EP33-75 are added into an open mill; and finally, a rubber compound blank with a certain shape and weight is manufactured by the use of a precision preforming machine after remilling. The environment-friendly type easily edge-torn EPDM gasket rubber compound provided by the invention has advantages of high flame retardancy, environmental protection, good insulating property and easily-torn edge.