| abstract |
The invention discloses a kind of small primer of resistance to oiled boots of fitting method, calculate in parts by weight, including butadiene-styrene rubber 90, nitrile rubber 10, neoprene 1.5, sulphur 0.4 0.5, captax 0.1 0.2, zinc oxide 5, magnesia 4, stearic acid 1.5, antioxidant D 1.5 2.5, calcium carbonate 20 40, pine tar 5, dibutyl ester 15, dark substitute 5, carbon black 20, semi-reinforcing hydrocarbon black 10.Rubber and fluid medium solubility parameter great disparity, have preferable oil resistivity；Softening agent is based on dibutyl ester, and with part pine tar, dark substitute；Filler calcium carbonate dosage suitably increases, and contributes to anti-swelling；State of cure (vulcanization) improves, and crosslink density is high, and oil-resistant effect is preferable.With the small primer of formula production, its oil resistance is preferable, and cost is relatively low, adapts to contact the operating environment of oils, suitable for the protection of oil operations. |