Sealing strip using epdm rubber as host material
A technology of EPDM rubber and matrix materials, which is applied to the sealing of engines, chemical instruments and methods, household components, etc., and can solve the problems of flame retardancy, non-environmental protection, environmental protection without flame retardancy, and inconsistent requirements.
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Embodiment 1
[0023] Embodiment 1: A kind of EPDM rubber is the sealing strip of matrix material, and its composition comprises following component (expressed in wt.%): EPDM rubber: 26%, zinc oxide: 1% phosphoric acid ester,: 1%, polyethylene glycol: 1%, aluminum hydroxide: 15%, zinc borate: 7%, phosphate ester: 10%, carbon black: 20%, paraffin oil: 15%, calcium oxide: 3%, sulfur: 0.3%, Accelerator: 0.7%.
Embodiment 2
[0024] Embodiment 2: a kind of EPDM rubber is the sealing strip of matrix material, and its composition comprises following component (expressed in wt.%): EPDM rubber: 26%, zinc oxide: 1.5%, stearic acid : 5%, polyethylene glycol: 1.5%, aluminum hydroxide: 10%, zinc borate: 15%, phosphate ester: 5%, carbon black: 10%, paraffin oil: 20%, calcium oxide: 4%, sulfur : 0.5%, Accelerator: 1.5%.
[0025] Production method of the present invention comprises the following steps successively:
[0026] 1) Mixing: Mix EPDM rubber, aluminum hydroxide, zinc borate, phosphate ester, carbon black, paraffin oil, hygroscopic agent, stearic acid, polyethylene glycol, and zinc oxide in a kneader according to the above formula Mixing and adjustment: Cooling water pressure 0.4MPa, air pressure 0.6MPa, mixing time 600 seconds, when the temperature of the mixed rubber reaches 135°C, the rubber is discharged;
[0027] 2) Tablet pressing: cool down the compound rubber tablet on the open mill, and par...
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