O-shaped seal ring rubber sizing material of gate valve end surface and preparation method thereof
A technology of O-ring and rubber compound, which is applied in the production of rubber compound for parallel gate valve end face O-ring and its preparation field, which can solve the problems of high cost, expensive raw materials, high sealing performance and corrosion resistance, etc. problems, to achieve good comprehensive performance, low material cost, and good air tightness
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[0031] 1. Raw material preparation:
[0032] Preparation of raw materials for rubber compound:
[0033] Weigh nitrile rubber 3304 90, sulfur 0.4, zinc oxide 5, stearic acid 1.5, antioxidant BHT 1.5, antioxidant RD 1.5, antioxidant 4010Na1.5, microcrystalline wax 3.5, quick press carbon black N660 24, High wear-resistant carbon black N330 63, dioctyl sebacate 20, diatomaceous earth 12, accelerator M 3.5, accelerator DM 1.5, accelerator TMTD 1.5,
[0034] Preparation of raw materials for B rubber compound:
[0035] Weigh polyacrylate rubber 85, ethylene propylene rubber 15, sodium stearate 1.5, anti-aging agent RD 2, gelatin T-78 0.5, rhine wax 1.5, quick extruded carbon black 50, graphite powder 12, sebacic acid Dioctyl ester 6, curing agent DCP 1, co-curing agent TAIC 0.6, accelerator Na-22 1.5.
[0036] 2. A method for preparing a gate valve end face O-ring rubber compound, comprising the following steps:
[0037] The first step: Prepare A rubber material and B rubber mat...
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